Korea Electric Power (KEP) 20-F 2016 FY Annual report (foreign)

As filed with the Securities and Exchange Commission on April 28, 2017

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form20-F

(Mark One)

☐ REGISTRATION STATEMENT PURSUANT TO SECTION 12(b) OR (g) OF THE SECURITIES EXCHANGE ACT OF 1934

OR

☑ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the fiscal year ended December 31, 2016

OR

☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

OR

☐ SHELL COMPANY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

Date of event requiring this shell company report

For the transition period from            to            

Commission File Number:001-13372

KOREA ELECTRIC POWER CORPORATION

(Exact name of registrant as specified in its charter)

N/A	The Republic of Korea
(Translation of registrant’s name into English)	(Jurisdiction of incorporation or organization)

55Jeollyeok-ro,Naju-si, Jeollanam-do, 58217, Korea

(Address of principal executive offices)

Yoon Hye Cho, +82 61 345 4213, yoonhye.cho@kepco.co.kr, +82 61 345 4299

(Name, telephone,e-mail and/or facsimile number and address of company contact person)

Securities registered or to be registered pursuant to Section 12(b) of the Act:

Title of each class:	Name of each exchange on which registered:
Common stock, par value Won 5,000 per share	New York Stock Exchange*
American depositary shares, each representing one-half of share of common stock	New York Stock Exchange

* Not for trading, but only in connection with the listing of American depositary shares on the New York Stock Exchange, pursuant to the requirements of the Securities and Exchange Commission.

Securities registered or to be registered pursuant to Section 12(g) of the Act:

None

Securities for which there is a reporting obligation pursuant to Section 15(d) of the Act:

One Hundred Year 7.95%Zero-to-Full Debentures, due April 1, 2096

6% Debentures due December 1, 2026

7% Debentures due February 1, 2027

6 ³/₄% Debentures due August 1, 2027

Indicate the number of outstanding shares of each of the issuer’s classes of capital or common stock as of the close of the last full fiscal year

covered by the annual report:

641,964,077 shares of common stock, par value of Won 5,000 per share

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.    Yes  ☑    No  ☐

If this report is an annual or transition report, indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934.    Yes  ☐    No  ☑

Note—Checking the box above will not relieve any registrant required to file reports pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 from their obligations under those Sections.

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports) and (2) has been subject to such filing requirements for the past 90 days:    Yes  ☑    No  ☐

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of RegulationS-T during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files):    Yes  ☐    No  ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, or anon-accelerated filer. See definition of “accelerated filer and large accelerated filer” in Rule12b-2 of the Exchange Act. (Check one):

Large accelerated filer ☑                    Accelerated filer☐                    Non-accelerated filer ☐                    Emerging Growth Company  ☐

If an emerging growth company that prepares its financial statements in accordance with U.S. GAAP, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards† provided pursuant to Section 13(a) of the Exchange Act. ☐

† The term “new or revised financial accounting standard” refers to any update issued by the Financial Accounting Standards Board to its Accounting Standards Codification after April 5, 2012.

Indicate by check mark which basis of accounting the registrant has used to prepare the financial statements included in this filing:

U.S. GAAP   ☐                International Financial Reporting Standards as issued by the International Accounting Standards Board  ☑            Other  ☐

If “Other” has been checked in response to the previous question, indicate by check mark which financial statement item the registrant has elected to follow.    Item 17  ☐    Item 18  ☐

If this is an annual report, indicate by check mark whether the registrant is a shell company (as defined in Rule12b-2 of the Exchange Act).    Yes  ☐    No  ☑

(APPLICABLE ONLY TO ISSUERS INVOLVED IN BANKRUPTCY PROCEEDINGS DURING THE PAST FIVE YEARS)

Indicate by check mark whether the registrant has filed all documents and reports required to be filed by Sections 12, 13 or 15(d) of the Securities Exchange Act of 1934 subsequent to the distribution of securities under a plan confirmed by a court.    Yes  ☐    No  ☐

TABLE OF CONTENTS

			Page
PART I				2
ITEM 1.	IDENTITY OF DIRECTORS, SENIOR MANAGEMENT AND ADVISERS			2
ITEM 2.	OFFER STATISTICS AND EXPECTED TIMETABLE			2
ITEM 3.	KEY INFORMATION			2
	Item 3.A.	Selected Financial Data		2
	Item 3.B.	Capitalization and Indebtedness		4
	Item 3.C.	Reasons for the Offer and Use of Proceeds		4
	Item 3.D.	Risk Factors		4
ITEM 4.	INFORMATION ON THE COMPANY			26
	Item 4.A.	History and Development of the Company		26
	Item 4.B.	Business Overview		27
	Item 4.C.	Organizational Structure		77
	Item 4.D.	Property, Plant and Equipment		80
ITEM 4A.	UNRESOLVED STAFF COMMENTS			81
ITEM 5.	OPERATING AND FINANCIAL REVIEW AND PROSPECTS			81
	Item 5.A.	Operating Results		81
	Item 5.B.	Liquidity and Capital Resources		96
	Item 5.C.	Research and Development, Patents and Licenses, etc.		100
	Item 5.D.	Trend Information		102
	Item 5.E.	Off-Balance Sheet Arrangements		102
	Item 5.F.	Tabular Disclosure of Contractual Obligations		102
ITEM 6.	DIRECTORS, SENIOR MANAGEMENT AND EMPLOYEES			109
	Item 6.A.	Directors and Senior Management		109
	Item 6.B.	Compensation		112
	Item 6.C.	Board Practices		112
	Item 6.D.	Employees		113
	Item 6.E.	Share Ownership		114
ITEM 7.	MAJOR SHAREHOLDERS AND RELATED PARTY TRANSACTIONS			114
	Item 7.A.	Major Shareholders		114
	Item 7.B.	Related Party Transactions		114
	Item 7.C.	Interests of Experts and Counsel		115
ITEM 8.	FINANCIAL INFORMATION			115
	Item 8.A.	Consolidated Statements and Other Financial Information		115
	Item 8.B.	Significant Changes		117
ITEM 9.	THE OFFER AND LISTING			117
	Item 9.A.	Offer and Listing Details		117
	Item 9.B.	Plan of Distribution		119
	Item 9.C.	Markets		119
	Item 9.D.	Selling Shareholders		122
	Item 9.E.	Dilution		122
	Item 9.F.	Expenses of the Issue		122
ITEM 10.	ADDITIONAL INFORMATION			123
	Item 10.A.	Share Capital		123
	Item 10.B.	Memorandum and Articles of Incorporation		123
	Item 10.C.	Material Contracts		130
	Item 10.D.	Exchange Controls		130
	Item 10.E.	Taxation		135
	Item 10.F.	Dividends and Paying Agents		146
	Item 10.G.	Statements by Experts		146
	Item 10.H.	Documents on Display		147
	Item 10.I.	Subsidiary Information		147

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			Page
ITEM 11.	QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK			147
ITEM 12.	DESCRIPTION OF SECURITIES OTHER THAN EQUITY SECURITIES			152
	Item 12.A.	Debt Securities		152
	Item 12.B.	Warrants and Rights		152
	Item 12.C.	Other Securities		152
	Item 12.D.	American Depositary Shares		153
PART II				155
ITEM 13.	DEFAULTS, DIVIDEND ARREARAGES AND DELINQUENCIES			155
ITEM 14.	MATERIAL MODIFICATIONS TO THE RIGHTS OF SECURITY HOLDERS AND USE OF PROCEEDS			155
ITEM 15.	CONTROLS AND PROCEDURES			155
ITEM 16.	[RESERVED]			156
ITEM 16A.	AUDIT COMMITTEE FINANCIAL EXPERT			156
ITEM 16B.	CODE OF ETHICS			156
ITEM 16C.	PRINCIPAL AUDITOR FEES AND SERVICES			157
ITEM 16D.	EXEMPTIONS FROM THE LISTING STANDARDS FOR AUDIT COMMITTEE			157
ITEM 16E.	PURCHASES OF EQUITY SECURITIES BY THE ISSUER AND AFFILIATED PURCHASERS			157
ITEM 16F.	CHANGE IN REGISTRANT’S CERTIFYING ACCOUNTANT			157
ITEM 16G.	CORPORATE GOVERNANCE			158
ITEM 16H.	MINE SAFETY DISCLOSURE			165
PART III				166
ITEM 17.	FINANCIAL STATEMENTS			166
ITEM 18.	FINANCIAL STATEMENTS			166
ITEM 19.	EXHIBITS			166

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CERTAIN DEFINED TERMS AND CONVENTIONS

All references to “Korea” or the “Republic” in this annual report on Form20-F, or this annual report, are references to the Republic of Korea. All references to the “Government” in this annual report are references to the government of the Republic. All references to “we,” “us,” “our,” “ours,” the “Company” or “KEPCO” in this annual report are references to Korea Electric Power Corporation and, as the context may require, its subsidiaries, and the possessive thereof, as applicable. All references to “the Ministry of Trade, Industry and Energy” and “the Ministry of Strategy and Finance” include the respective predecessors thereof. All references to “tons” are to metric tons, equal to 1,000 kilograms, or 2,204.6 pounds. Any discrepancies in any table between totals and the sums of the amounts listed are due to rounding. All references to “IFRS” in this annual report are references to the International Financial Reporting Standards as issued by the International Accounting Standard Board. Unless otherwise stated, all of our financial information presented in this annual report has been prepared on a consolidated basis and in accordance with IFRS.

In addition, in this annual report, all references to:

• “EWP” are to Korea East-West Power Co., Ltd.,

• “KHNP” are to Korea Hydro & Nuclear Power Co., Ltd.,

• “KOMIPO” are to Korea Midland Power Co., Ltd.,

• “KOSEP” are to Korea South-East Power Co., Ltd.,

• “KOSPO” are to Korea Southern Power Co., Ltd., and

• “KOWEPO” are to Korea Western Power Co., Ltd.,

each of which is our wholly-owned generation subsidiary.

FORWARD-LOOKING STATEMENTS

This annual report includes “forward-looking statements” (as defined in Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934), including statements regarding our expectations and projections for future operating performance and business prospects. The words “believe,” “expect,” “anticipate,” “estimate,” “project” and similar words used in connection with any discussion of our future operation or financial performance identify forward-looking statements. In addition, all statements other than statements of historical facts included in this annual report are forward-looking statements. Although we believe that the expectations reflected in such forward-looking statements are reasonable, we can give no assurance that such expectations will prove to be correct. We caution you not to place undue reliance on the forward-looking statements, which speak only as of the date of this annual report.

This annual report discloses, under the caption Item 3.D. “Risk Factors” and elsewhere, important factors that could cause actual results to differ materially from our expectations (“Cautionary Statements”). All subsequent written and oral forward-looking statements attributable to us or persons acting on our behalf are expressly qualified in their entirety by the Cautionary Statements.

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PART I

ITEM 1. IDENTITY OF DIRECTORS, SENIOR MANAGEMENT AND ADVISERS

Not applicable.

ITEM 2. OFFER STATISTICS AND EXPECTED TIMETABLE

Not applicable.

ITEM 3. KEY INFORMATION

Item 3.A. Selected Financial Data

The selected consolidated financial data set forth below as of and for the years ended December 31, 2012, 2013, 2014, 2015 and 2016 have been derived from our audited consolidated financial statements which have been prepared in accordance with IFRS.

You should read the following data with the more detailed information contained in Item 5. “Operating and Financial Review and Prospects” and our consolidated financial statements included in Item 18. “Financial Statements.” Historical results do not necessarily predict future results.

Consolidated Statement of Comprehensive Income (Loss) Data

	2012			2013			2014			2015			2016			2016
	(in billions of Won and millions of US$, except per share data)(1)
Sales	￦	49,121		￦	53,713		￦	57,123		￦	58,582		￦	59,763		$	49,649
Cost of sales		48,460			50,596			49,763			45,458			45,550			37,842
Gross profit		661			3,117			7,360			13,124			14,213			11,807
Selling and administrative expenses		1,780			1,923			1,924			2,153			2,639			2,192
Other income (expense)		601			625			666			699			652			542
Other gains (losses)		(1,782	)		129			107			8,611			70			58
Operating profit (loss)		(2,300	)		1,948			6,209			20,281			12,296			10,215
Finance income (expense), net		(1,940	)		(2,302	)		(2,255	)		(1,832	)		(1,646	)		(1,367	)
Income (loss) before income taxes		(4,063	)		(396	)		4,229			18,656			10,513			8,734
Income tax (expense) benefit		985			571			(1,430	)		(5,239	)		(3,365	)		(2,796	)
Profit (loss) for the period		(3,078	)		174			2,799			13,416			7,148			5,938
Other comprehensive income (loss)		(322	)		186			(358	)		34			(2	)		(2	)
Total comprehensive income (loss)		(3,400	)		360			2,441			13,450			7,146			5,936
Profit (loss) attributable to:
Owners of the Company		(3,167	)		60			2,687			13,289			7,048			5,855
Non-controlling interests		89			114			112			127			100			83
Total comprehensive income (loss) attributable to:
Owners of the Company		(3,448	)		245			2,336			13,308			7,042			5,850
Non-controlling interests		48			115			105			142			104			86
Earnings (loss) per share
Basic(2)		(5,083	)		96			4,290			20,701			10,980			9.12
Earnings (loss) per ADS
Basic(2)		(2,542	)		48			2,145			10,351			5,490			4.56
Dividends per share		—			90			500			3,100			1,980			1.64

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Consolidated Statements of Financial Position Data

	As of December 31,
	2012			2013			2014			2015			2016			2016
	(in billions of Won and millions of US$, except share and per share data)(1)
Net working capital deficit(3)	￦	(4,884	)	￦	(4,945	)	￦	(4,780	)	￦	(686	)	￦	(5,031	)	$	(4,180	)
Property, plant and equipment, net		122,376			129,638			135,812			141,361			145,743			121,079
Total assets		146,153			155,527			163,708			175,257			177,837			147,742
Total shareholders’ equity		51,064			51,451			54,825			67,942			73,051			60,688
Equity attributable to owners of the Company		49,889			50,260			53,601			66,634			71,724			59,586
Non-controlling interests		1,175			1,191			1,224			1,308			1,327			1,102
Share capital		3,210			3,210			3,210			3,210			3,210			2,667
Number of common shares as adjusted to reflect any changes in capital stock		641,964,077			641,964,077			641,964,077			641,964,077			641,964,077			641,964,077
Long-term debt (excluding current portion)		45,525			52,801			55,720			50,907			44,700			37,135
Other long term liabilities		30,747			31,062			31,563			33,697			35,347			29,365

Notes:

(1) The financial information denominated in Won as of and for the year ended December 31, 2016 has been translated into U.S. dollars at the exchange rate of Won 1,203.7 to US$1.00, which was the Noon Buying Rate as of December 30, 2016.

(2) Basic earnings (loss) per share are calculated by dividing net income available to holders of our common shares by the weighted average number of common shares issued and outstanding for the relevant period. Basic earnings (loss) per ADS have been computed as if all of our issued and outstanding common shares are represented by ADSs during each of the years presented. Each ADS represents two common shares. Dilutive earnings (loss) per share is not presented as such amount was anti-dilutive for the year ended December 31, 2012, and such amount was the same as basic earnings (loss) per share for the years ended December 31, 2013 through 2016 since there were no potential dilutive instruments.

(3) Net working capital is defined as current assets minus current liabilities. For the periods indicated, current liabilities exceeded current assets, which resulted in working capital deficit for such periods.

Currency Translations and Exchange Rates

In this annual report, unless otherwise indicated, all references to “Won,” “KRW” or “W” are to the currency of Korea, all references to “U.S. dollars,” “Dollars,” “$” or “US$” are to the currency of the United States of America; all references to “Euro” or “€” are references to the currency of the European Union; all references to “Yen” or “¥” are references to the currency of Japan; all references to “A$” are to the currency of Australia; and all references to “RMB” are to the currency of the People’s Republic of China. Unless otherwise indicated, all translations from Won to U.S. dollars were made at Won 1,203.7 to US$1.00, which was the noon buying rate of the Federal Reserve Board (the “Noon Buying Rate”) in effect as of December 30, 2016, which rates are available on the H.10 statistical release of the Federal Reserve Board. On April 14, 2017, the Noon Buying Rate was Won 1,136.7 to US$1.00. The exchange rate between the U.S. dollar and Korean Won may be highly volatile from time to time and the U.S. dollar amounts referred to in this annual report should not be relied upon as an accurate reflection of our results of operations. No representation is made that the Won or U.S. dollar amounts referred to in this annual report could have been or could be converted into U.S. dollars or Won, as the case may be, at any particular rate or at all.

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The following table sets forth, for the periods and dates indicated, certain information concerning the Noon Buying Rate in Won per US$1.00.

Year Ended December 31,	At End of Period		Average(1)		High		Low
	(Won per US$1.00)
2012		1,063.2		1,119.6		1,185.0		1,063.2
2013		1,055.3		1,094.6		1,161.3		1,050.1
2014		1,090.9		1,054.0		1,117.7		1,008.9
2015		1,169.3		1,133.7		1,196.4		1,063.0
2016		1,203.7		1,160.5		1,242.6		1,090.0
October		1,145.4		1,128.6		1,146.5		1,104.8
November		1,175.9		1,162.7		1,181.6		1,131.4
December		1,203.7		1,183.1		1,212.2		1,161.7
2017 (through April 14)		1,136.7		1,147.6		1,207.2		1,108.3
January		1,151.5		1,179.1		1,207.0		1,151.5
February		1,129.2		1,140.5		1,154.5		1,129.2
March		1,117.5		1,133.9		1,158.1		1,108.3
April (through April 14)		1,136.7		1,133.0		1,147.8		1,117.7

Source: Federal Reserve Board

Note:

(1) The average rates for annual and interim periods were calculated by taking the simple average of the Noon Buying Rates on the last day of each month during the relevant period. The average rates for the monthly periods (or a portion thereof) were calculated by taking the simple average of the daily Noon Buying Rates during the relevant month (or a portion thereof).

Item 3.B. Capitalization and Indebtedness

Not Applicable

Item 3.C. Reasons for the Offer and Use of Proceeds

Not Applicable

Item 3.D. Risk Factors

Our business and operations are subject to various risks, many of which are beyond our control. If any of the risks described below actually occurs, our business, financial condition or results of operations could be seriously harmed.

Risks Relating to KEPCO

Increases in fuel prices will adversely affect our results of operations and profitability as we may not be able to pass on the increased cost to customers at a sufficient level or on a timely basis.

In 2016, fuel costs constituted 30.9% of our cost of sales and the ratio of fuel costs to our sales was 23.4%. Our generation subsidiaries purchase substantially all of the fuel that they use (except for anthracite coal) from suppliers outside Korea at prices determined in part by prevailing market prices in currencies other than Won. For example, most of the bituminous coal requirements (which accounted for approximately 45.9% of our fuel requirements in 2016 in terms of electricity output) are imported principally from Indonesia, Australia, Russia

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and, to a lesser extent, South Africaand others, which accounted for approximately 40%, 37%, 15%, 2% and 6%, respectively, of the annual bituminous coal requirements of our generation subsidiaries in 2016. Approximately 82% of the bituminous coal requirements of our generation subsidiaries in 2016 were purchased under long-term contracts and the remaining 18% from the spot market. Pursuant to the terms of our long-term supply contracts, prices are adjusted periodically based on prevailing market conditions. In addition, our generation subsidiaries purchase a significant portion of their fuel requirements under contracts with limited duration. See Item 4.B. “Business Overview—Fuel.”

The prices of our main fuel types, namely, bituminous coal, oil and liquefied natural gas, or LNG, fluctuate, sometimes significantly, in tandem with their international market prices. For example, the average daily spot price of “free on board” Newcastle coal 6300 GAR published by Platts increased from US$58.0 per ton in 2015 to US$66.8 per ton in 2016 and to US$84.4 per ton as of April 13, 2017. The prices of oil and LNG are substantially dependent on the price of crude oil, and according to Bloomberg (Bloomberg Ticker: PGCRDUBA), the average daily spot price of Dubai crude oil declined from US$51.1 per barrel in 2015 to US$41.4 per barrel in 2016 but rebounded to US$54.2 per barrel as of April 14, 2017. We cannot assure you that fuel prices will remain stable or will not significantly increase in the remainder of 2017 or thereafter. If fuel prices increase substantially in the future within a short span of time, our generation subsidiaries may be unable to secure requisite fuel supplies at prices commercially acceptable to them. In addition, any significant interruption or delay in the supply of fuel, bituminous coal in particular, from any of their suppliers may cause our generation subsidiaries to purchase fuel on the spot market at prices higher than the prices available under existing supply contracts, which would result in an increase in fuel costs.

Because the Government regulates the rates we charge for the electricity we sell to our customers (see Item  4.B. “Business Overview—Sales and Customers—Electricity Rates”), our ability to pass on fuel and other cost increases to our customers is limited. If fuel prices increase rapidly and substantially and the Government, out of concern for inflation or for other reasons, maintains the current level of electricity tariff or does not increase it to a level to sufficiently offset the impact of high fuel prices, the fuel price increases will negatively affect our profit margins or even cause us to suffer operating and/or net losses, and our business, financial condition, results of operations and cash flows would suffer.

The Government may also set or adjust electricity tariff rates to serve particular policy goals that may not be necessarily responsive to fuel price movements. For example, effective January 1, 2017, the Government made several adjustments to the existing rate structure in order to ease the burden of electricity tariff on residential consumers as well as promote the use of renewable energy. First, the progressive rate structure applicable to the residential sector, which applies a gradient of increasing tariff rates for heavier electricity usage, was changed from asix-tiered structure with the highest rate being no more than 11.7 times the lowest rate (which gradient system has been in place since 2005) into a three-tiered structure with the highest rate being no more than three times the lowest rate, in order to reflect the changes in the pattern of electricity consumption and reduce the electricity charges payable by consumers. Second, the new tariff structure encourages energy saving by offering rate discounts to residential consumers that voluntarily reduce electricity consumption while charging special high rates to residential consumers with heavy electricity consumption during peak usage periods in the summer and the winter. Third, a temporary rate discount will apply during 2017 to 2019 to investments in environmentally friendly facilities such as energy storage systems, renewable energy and electric cars. Such adjustments may lower our revenues from the sale of electricity and accordingly have a material adverse effect on our results of operation, financial condition and cash flows.

In addition, partly because the Government may have to undergo a lengthy deliberative process to approve an increase in electricity tariff, which represents a key component of the consumer price index, the electricity tariff may not be adjusted to a level sufficient to ensure a fair rate of return to us in a timely manner or at all, and we cannot assure that any future tariff increase by the Government will be sufficient to fully offset the adverse impact on our results of operations from current or potential rises in fuel costs. On the other hand, if fuel prices decrease, the public may demand a corresponding decrease in electricity tariff rates, and as a result the

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Government may decrease electricity tariff rates; however, we cannot assure you that the resulting tariff rate reduction will not be excessive and thus have a detrimental effect on our profit margins, results of operations or cash flows or that, if the fuel prices were to rise again subsequent to the tariff reduction, the tariff rates would be further adjusted upwards in a timely manner, in sufficient amounts or at all so as to fully offset the adverse impact from the increase in fuel prices.

The Government may adopt policy measures to substantially restructure the Korean electric power industry or our operational structure, which may have a material adverse effect on our business, operations and profitability.

From time to time, the Government considers various policy initiatives to foster efficiency in the Korean electric power industry, and at times have adopted policy measures that have substantially modified our business and operations. For example, in January 1999, with the aim of introducing greater competition in the Korean electric power industry and thereby improving its efficiency, the Government announced a restructuring plan for the Korean electric power industry, or the Restructuring Plan. For a detailed description of the Restructuring Plan, see Item  4.B. “Business Overview—Restructuring of the Electric Power Industry in Korea.” As part of this initiative, in April 2001 the Government established the Korea Power Exchange to enable the sale and purchase of electricity through a competitive bidding process, established the Korea Electricity Commission to ensure fair competition in the Korean electric power industry, and, in order to promote competition in electricity generation, split off our electricity generation business to form one nuclear generation company and fivenon-nuclear generation companies, in each case, to be wholly owned by us. In 2002, the Government introduced a plan to privatize one of our fivenon-nuclear generation subsidiaries, but this plan was suspended indefinitely in 2003 due to prevailing market conditions and other policy considerations.

In August 2010, the Ministry of Trade, Industry and Energy announced the Proposal for the Improvement in the Structure of the Electric Power Industry, which was designed to promote responsible management by and improve operational efficiency of government-affiliated electricity companies by fostering competition among them. Pursuant to this proposal, while our six generation subsidiaries continued to be our wholly-owned subsidiaries, in January 2011 the six generation subsidiaries were officially designated as “market-oriented public enterprises” (same as us) under the Act on the Management of Public Institutions, whereupon the President of Korea appoints the president and the standing director who is to become a member of the audit committee of each such subsidiary; the selection ofnon-standing directors of each such subsidiary is subject to approval by the minister of the Ministry of Strategy and Finance; the president of each such subsidiary is required to enter into a management contract directly with the minister of the Ministry of Trade, Industry and Energy; and the Public Agencies Operating Committee (which is comprised largely of Government officials and those recommended by Government officials) conducts performance evaluation of such subsidiaries. Previously, our president appointed the president and the statutory auditor of each such subsidiary; the selection ofnon-standing directors of each such subsidiary was subject to approval by our president; the president of each such subsidiary entered into a management contract with our president; and our evaluation committee conducted performance evaluation of such subsidiaries. As a result of these changes, our six generation subsidiaries took on additional operational responsibilities and management autonomy with respect to construction and management of generation units and procurement of fuel, while we as the parent company continued to oversee and coordinate, among others, finances, corporate governance, overseas businesses, including nuclear export technology and overseas resource development, that jointly affect us and our generation subsidiaries. See also Item 16.G. “Corporate Governance—The Act on the Management of Public Institutions—Applications of the Act on Our Generation Subsidiaries,”

In June 2016, the Government announced the Proposal for Adjustment of Functions of Public Institutions (Energy Sector) for the purpose of streamlining the operations of government-affiliated energy companies by discouraging them from engaging in overlapping or similar businesses with each other, reducingnon-core assets and activities and improving management and operational efficiency. The initiatives contemplated in this proposal that would affect us and our generation subsidiaries include the following: (i) the generation companies

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should take on greater responsibilities in overseas resource exploration and production projects as these involve procurement of fuels necessary for electricity generation while fostering cooperation among each other through closer coordination, (ii) KHNP should take a greater role in export of nuclear technology, and (iii) the current system of retail sale of electricity toend-users should be liberalized to encourage more competition. In accordance therewith, we transferred a substantial portion of our assets and liabilities in our overseas resource business to our generation subsidiaries as of December 31, 2016. In addition, pursuant to this Proposal, we are considering a sale in the public market of a minority of our shares in our five generation subsidiaries, KEPCO KDN and KHNP gradually and in that order, subject to prevailing market conditions and other policy considerations. Accordingly, we are currently taking steps in preparation of a potential sale of a minority of our shares in KOSEP and EWP through public offerings by the end of 2017, but whether and when such sale would occur will be subject to prevailing market conditions and considerations of public policy. In any event, we plan to maintain a controlling stake in each of these subsidiaries.

Other than as set forth above, we are not aware of any specific plans by the Government to resume the implementation of the Restructuring Plan or otherwise change the current structure of the electric power industry or the operations of us or our generation subsidiaries materially in the near future. However, for reasons relating to changes in policy considerations, socio-political, economic and market conditions and/or other factors, the Government may resume the implementation of the Restructuring Plan or initiate other steps that may change the structure of the Korean electric power industry or the operations of us or our generation subsidiaries materially. Any such measures may have a negative effect on our business, results of operations and financial condition. In addition, the Government, which beneficially owns a majority of our shares and exercises significant control over our business and operations, may from time to time pursue policy initiatives that could directly or indirectly impact our business and operations, and such initiatives may vary from the interest and objectives of our other shareholders.

Our capacity expansion plans, which are principally based on projections on long-term supply and demand of electricity in Korea, may prove to be inadequate.

We and our generation subsidiaries make plans for expanding or upgrading our generation capacity and transmission infrastructure based on the Basic Plan Relating to the Long-Term Supply and Demand of Electricity, or the Basic Plan, which is generally revised and announced every two years by the Government. In July 2015, the Government announced the Seventh Basic Plan relating to the future supply and demand of electricity. The Seventh Basic Plan, which is effective for the period from 2015 to 2029, focuses on, among other things, (i) ensuring a stable supply of electricity, (ii) increasing the portion of low carbon electricity supply sources, (iii) active consumer demand management, (iv) permanent closing of operations of the Kori #1 nuclear power unit, and (v) diversifying electricity supply sources through greater utilization of renewable energy sources.

In January 2014, prior to the announcement of the Seventh Basic Plan, the Ministry of Trade, Industry and Energy adopted the Second Basic National Energy Plan following consultations with representatives from civic groups, the power industry and academia. The Second Basic National Energy Plan, which is a comprehensive plan that covers the entire spectrum of energy industries in Korea, covers the period from 2014 to 2035 and focuses on the following six key tasks: (i) shifting the focus of energy policy to demand management with a goal of reducing the growth of electricity demand by 15% by 2035 through efficiency enhancement programs compared to the projected growth in the absence of such efficiency enhancement programs, (ii) establishing a geographically decentralized electricity generation system so as to reduce transmission losses with a goal of supplying at least 15% of total electricity through such system by 2035, (iii) applying latest greenhouse gas emission reduction technologies to newly constructed generation units in order to further promote safety and security, (iv) strengthening resource exploration and fuel procurement capabilities to enhance Korea’s energy security, (v) ensuring stable supply of energy and increasing the portion of electricity supplied from renewable sources to 11% by 2035, (vi) reinforcing the system for stable supply of conventional energy, such as oil and gas, and (vii) introducing in 2015 an energy voucher system in lieu of a tariff discount system for the benefit of

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consumers in the low income group. In addition, the Second Basic National Energy Plan revised the target level of electricity generated by nuclear sources as a percentage of total electricity generated to 29%, compared to 41% under the First Basic National Energy Plan announced in 2008, which covered the period from 2008 to 2030.

We cannot assure that the Seventh Basic Plan, the Second Basic National Energy Plan, or their respective successor plans will successfully achieve their intended goals, the foremost of which is to ensure, through carefully calibrated capacity expansion and other means, balanced overall electricity supply and demand in Korea at affordable costs to end users while promoting efficiency and environmental friendliness in the consumption and production of electricity. If there is significant variance between the projected electricity supply and demand considered in planning our capacity expansions and the actual electricity supply and demand, or if these plans otherwise fail to meet their intended goals or have other unintended consequences, this may result in inefficient use of our capital, mispricing of electricity and undue financing costs on the part of us and our generation subsidiaries, among others, which may have a material adverse effect on our results of operations, financial condition and cash flows.

From time to time, we may experience temporary power shortages or circumstances bordering on power shortages due to factors beyond our control, such as extreme weather conditions. Such circumstances may lead to increasedend-user complaints and greater public scrutiny, which may in turn require us to modify our capacity expansion plans, and if we were to substantially modify our capacity plans, this might result in additional capital expenditures and, as a result, have a material adverse effect on our results of operations, financial condition and cash flows.

Although the Government makes significant efforts to encourage conservation of electricity, including through public education campaigns, there is no assurance that such efforts will have the desired effect of substantially reducing the demand for electricity or improving efficient use thereof.

We are subject to various environmental regulations and related government initiatives, including in relation to climate change, which could cause significant compliance costs and operational liabilities.

We are subject to national, local and overseas environmental laws and regulations, including increasing pressure to reduce emission of carbon dioxide from our electricity generation activities as well as our natural resource development endeavors overseas. Our operations could expose us to the risk of substantial liability relating to environmental, health and safety issues, such as those resulting from the discharge of pollutants and carbon dioxide into the environment and the handling, storage and disposal of hazardous materials. We may be responsible for the investigation and remediation of environmental conditions at current or former operational sites. We may also be subject to related liabilities (including liabilities for environmental damage, third party property damage or personal injury) resulting from lawsuits brought by governments or private litigants. In the course of our operations, hazardous wastes may be generated, disposed of or treated at third party-owned or -operated sites. If those sites become contaminated, we could also be held responsible for the cost of investigation and remediation of such sites for any related liabilities, as well as for civil or criminal fines or penalties.

We intend to fully comply with our environmental obligations. However, our environmental measures, including the use of, or replacement with, environmentally friendly but more expensive parts and equipment and budgeting capital expenditures for the installation or modification of such facilities, may result in increased operating costs and liquidity requirement. The actual cost of installation, replacement, modification and/or operation of such equipment and related liquidity requirement may depend on a variety of factors that are beyond our control. There is no assurance that we will continue to be in material compliance with legal or regulatory requirements or satisfy social norms and expectations in the future in relation to the environment, including in respect of climate change.

In recent years, partly driven by growing public awareness and sensitivity toward climate change and other environmental issues as well as in an effort to capture the economic and social potential associated with

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renewable energy and “new energy”—related industries (such as smart grids, energy storage systems and electrical vehicles, among others), the Government has introduced and implemented a number of new measures designed to reduce carbon emission, minimize environmental damage and spur related business opportunities. Some key examples of such Government initiatives pertinent to our and our generation subsidiaries’ operations as follows:

• CarbonEmissionTrading System and Related Emission ReductionTargets. In accordance with the Act on Allocation and Trading of Greenhouse Gas Emission Allowances, enacted in March 2013, the Government is currently in the process of implementing a carbon emission trading system under which the Government will allocate the amount of permitted carbon emission to companies by industry and a company whose business emits more carbon than the permitted amount may purchase the right to emit more carbon through the carbon emission trading exchange. This system is expected to be implemented in three stages. During the first phase (2015 to 2017), the Government will set up and make a test run of the trading system to ensure its smooth operation; during this phase, the carbon emission rights will be allocated without charge. During the second phase (2018 to 2020), the system will be applied to a limited scope of industries and companies, where the carbon emission right will be allocated at a relatively low price, but not freely. During the third phase (2021 to 2025), the Government plans to run the system on an expanded scale with aggressive carbon emission reduction targets. As part of the implementation of this trading system, we are obligated to reduce, on a consolidated basis, approximately 200 million tons of carbon emissions, amounting to a 23.7% reduction, per year during the first phase of 2015 to 2017. The amount of required reduction for the second phase of 2018 to 2020 is expected to be determined in June 2017. Adhering to such emission reduction requirement is expected to result in our incurring significant compliance costs.

• Regulation of Decrepit Coal-Fired Generation Units. According to a plan announced in July 2016 by the Ministry of Trade, Industry and Energy in relation to coal-fired electricity generation units, 10 of our coal generation units that are 30 years or older will be required to be shut down or convert to another fuel use, 43 of our such units that are less than 30 years old will be subject to retrofitting and overall replacement of environmental facilities, and 20 of our such units currently under construction will be subject to more rigorous emission standards. In addition, the Government indicated that it would not allow any new construction of additional coal-fired generation units after 2019, which means that LNG is likely to be used more in the future as the substitute for coal, and since LNG is a more expensive fuel source than fuel, this regulation is expected to drive up the average cost of generating electricity. Compliance with such measures is expected to result in our incurring significant costs.

• Coal Consumption Tax. In January 2014, largely based on policy considerations of tax equity among different fuel types as well as environmental concerns, the Ministry of Strategy and Finance announced that, effective July 1, 2014, consumption tax will apply to bituminous coal, which previously was not subject to consumption tax unlike other fuel types such as LNG or bunker oil. Pursuant to the amended Individual Consumption Tax Act effective as of April 1, 2017, which involved an increase of the unit tax rate for coal by Won 6 across the board, the base tax rate (which is subject to certain adjustments) is Won 30 per kilogram for bituminous coal; however, due to concerns on the potential adverse effect on industrial activities, the applicable tax rate is applied differently based on the net heat generation amount. The currently applicable tax rate for bituminous coal is Won 27 per kilogram for net heat generation of less than 5,000 kilocalories, Won 30 per kilogram for net heat generation of 5,000 to 5,500 kilocalories and Won 33 per kilogram for net heat generation of 5,500 kilocalories or more. In contrast, the currently applicable tax rate for LNG is Won 60 per kilogram. Since bituminous coal currently represents the largest fuel type for our electricity generation, accounting for approximately 45.9% of our entire fuel requirements in 2016 in terms of electricity output, we expect the coal consumption tax thereon will result in an increase of our overall fuel costs.

• Renewable Portfolio Standard. Under this program, each of our generation subsidiaries is required to generate a specified percentage of total electricity to be generated by such generation subsidiary in a given year in the form of renewable energy or, in case of a shortfall, purchase a corresponding amount

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of a Renewable Energy Certificate (a form of renewable energy credit) from other generation companies whose renewable energy generation surpass such percentage. The target percentage was 3.0% in 2015 and 3.5% in 2016 and will incrementally increase to 10.0% by 2023. Fines are to be levied on any subsidiary that fails to do so in the prescribed timeline. In 2015, all six of our generation subsidiaries met the target through renewable energy generation and/or the purchase of a Renewable Energy Certificate. Compliance by our generation subsidiaries of the 2016 target is currently under evaluation, and if any generation subsidiary is found to have failed to meet the target for 2016 or for subsequent years, such generation subsidiary may become subject to fines.

• New Energy Industry Fund. In January 2016, the Ministry of Trade, Industry and Energy announced an initiative to promote the new energy industry by creating the New Energy Industry Fund, which is made up of funds sponsored by government-affiliated energy companies. The purpose of these funds is to invest in substantially all frontiers of the new energy industry, including renewable energy, energy storage systems, electric vehicles,small-sized self-sustaining electricity generation grids known as “micro-grids”, among others, as well as invest instart-up companies, ventures, small- tomedium-sized enterprise and project businesses that engage in these businesses but have not previously attracted sufficient capital from the private sector. The total size of these funds was US$1 trillion as of December 31, 2016; these funds were funded from our budget for new energy industry projects, which totaled US$6.4 trillion in 2016 and were expended in research and development, efficiency improvements and educational solar power projects, among others. Our budget for new energy industry projects in 2017 amounts to US$5.6 trillion, of which US$1 trillion has been earmarked for potential additional commitments to the New Energy Industry Fund.

• Environmental and safety considerations in electricity supply and demand planning. In March 2017, the Electricity Business Act was amended to the effect that starting in June 2017, future national planning for electricity supply and demand in Korea should consider the environmental and safety impacts of such planning. However,to-date, no specific guidelines have been provided by the Government as to how to implement this provision, and it is therefore difficult to assess in advance what impact such provision will have on our business, results of operations or financial condition.

Complying with these Government initiatives and operating programs in furtherance thereof has involved and will likely involve significant costs and resources on our part. We and our generation subsidiaries could also become subject to substantial fines and other forms of penalties fornon-compliance. We expect that the additional costs associated with implementing and operating these programs and otherwise complying with these programs will be covered by a corresponding increase in electricity tariff. However, there is no assurance that, particularly given the wide-ranging policy priorities for the Government, it will in fact raise the electricity tariff to a level sufficient to fully cover such additional costs, do so on a timely basis or at all. If the Government does not do so or provide us and our generation subsidiaries with other forms of assistance to offset the costs involved, our results of operation, financial condition and cash flows may be materially and adversely affected.

See Item 4.B. “Business Overview—Environmental Programs.”

We may require a substantial amount of additional indebtedness to refinance existing debt and for future capital expenditures.

We anticipate that a substantial amount of additional indebtedness will be required in the coming years in order to refinance existing debt, make capital expenditures for construction of generation plants and other facilities and/or make acquisitions, invest in renewable energy and the “new energy industry” projects and fund our overseas businesses. In 2014, 2015 and 2016, our capital expenditures in relation to the foregoingamounted to Won 16,629 billion, Won 15,750 billion and Won 13,950 billion, respectively, and our budgeted capital expenditures for 2017, 2018 and 2019 amount to Won 14,889 billion, Won 15,860 billion and Won 16,071 billion, respectively.

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While we currently do not expect to face any material difficulties in procuring short-term borrowings to meet our liquidity and short-term capital requirements, there is no assurance that we will be able to do so. We expect that a portion of our long-term debt will need to be paid or refinanced through foreign currency-denominated borrowings and capital raising in international capital markets. Such financing may not be available on terms commercially acceptable to us or at all, especially if the global financial markets experience significant turbulence or a substantial reduction in liquidity or due to other factors beyond our control. If we are unable to obtain financing on commercially acceptable terms on a timely basis, or at all, we may be unable to meet our funding requirements for capital expenditures or debt repayment obligations, which could have a material adverse impact on our business, results of operations and financial condition.

In light of the general policy guideline of the Government for public institutions (including us and our generation subsidiaries) to reduce their respective overall debt levels, we and our generation subsidiaries have, in consultation with the Government and as approved by the Public Agencies Operating Committee, set targetdebt-to-equity levels and undertaken various programs to reduce debt and improve the overall financial health by the end of 2017. For further information, see Item 4.B. “Business Overview—Debt Reduction Program and Related Activities.” Despite our best efforts, however, for reasons beyond our control, including macroeconomic environments, government regulations and market forces (such as international market prices for our fuels), we cannot assure whether we or our generation subsidiaries will be able to successfully reduce debt burdens or otherwise improve our financial health to a level contemplated by the Government or to a level that would be optimal for our capital structure. If we or our generation subsidiaries fail to do so or the measures taken by us or our generation subsidiaries to reduce debt levels or improve financial health have unintended adverse consequences, such developments may have an adverse effect on our business, results of operations and financial condition.

The movement of Won against the U.S. dollar and other currencies may have a material adverse effect on us.

The Won has fluctuated significantly against major currencies from time to time. Even slight depreciation of Won against U.S. dollar and other foreign currencies may result in a material increase in the cost of fuel and equipment purchased by us from overseas since the prices for substantially all of the fuel materials and a significant portion of the equipment we purchase are denominated in currencies other than Won, generally in U.S. dollars. Changes in foreign exchange rates may also impact the cost of servicing our foreign currency-denominated debt. As of December 31, 2016, approximately 23.1% of our long-term debt (including the current portion but excluding issue discounts and premium) before accounting for swap transactions, was denominated in foreign currencies, principally U.S. dollars. In addition, even if we make payments in Won for certain fuel materials and equipment, some of these fuel materials may originate from other countries and their prices may be affected accordingly by the exchange rates between the Won and foreign currencies, especially the U.S. dollar. Since the substantial majority of our revenues are denominated in Won, we must generally obtain foreign currencies through foreign currency-denominated financings or from foreign currency exchange markets to make such purchases or service such debt. As a result, any significant depreciation of Won against the U.S. dollar or other major foreign currencies will have a material adverse effect on our profitability and results of operations.

We may not be successful in implementing new business strategies.

As part of our overall business strategy, we plan to (i) strengthen competitiveness in our core operations by enhancing efficiency of our generation, transmission and distribution networks and related facilities, (ii) expand and develop new businesses by diversifying our overseas business and actively addressing climate change, (iii) create a platform for future growth by developing an ecosystem focused on new energy technologies, and (iv) strengthen our management system for sustainable growth.

Due to their inherent uncertainties, such new and expanded strategic initiatives expose us to a number of risks and challenges, including the following:

• new and expanded business activities may require unanticipated capital expenditures and involve additional compliance requirements;

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• new and expanded business activities may result in less growth or profit than we currently anticipate, and there can be no assurance that such business activities will become profitable at the level we desire or at all;

• certain of our new and expanded businesses, particularly in the areas of renewable energy, require substantial government subsidies to become profitable, and such subsidies may be substantially reduced or entirely discontinued;

• we may fail to identify and enter into new business opportunities in a timely fashion, putting us at a disadvantage vis-à-vis competitors, particularly in overseas markets; and

• we may need to hire or retrain personnel to supervise and conduct the relevant business activities.

As part of our business strategy, we may also seek, evaluate or engage in potential acquisitions, joint ventures, strategic alliances, restructurings, combinations, rationalizations, divestments or other similar opportunities. The prospects of these initiatives are uncertain, and there can be no assurance that we will be able to successfully implement or grow new ventures, and these ventures may prove more difficult or costly than what we originally anticipated. In addition, we regularly review the profitability and growth potential of our existing and new businesses. As a result of such review, we may decide to exit from or to reduce the resources that we allocate to new or existing ventures in the future. There is a risk that these ventures may not achieve profitability or operational efficiencies to the extent originally anticipated, and we may fail to recover investments or expenditures that we have already made. Any of the foregoing may have a material adverse effect on our reputation, business, results of operations, financial condition and cash flows.

We plan to pursue overseas expansion opportunities that may subject us to different or greater risks than those associated with our domestic operations.

While our operations have,to-date, been primarily based in Korea, we and our generation subsidiaries may expand, on a selective and opportunistic basis, overseas operations in the future. In particular, we and our generation subsidiaries may further diversify the geographic focus of our operations from Asia to the rest of the world, including the resource-rich Middle East, Australia and Africa, as well as expand our project portfolio to include the construction and operation of conventional thermal generation units, nuclear generation units and renewable energy power plants and (primarily through our generation subsidiaries) mining and development of fuel sources.

Overseas operations often involve risks that are different from those we face in our domestic operations, including the following:

• challenges of complying with multiple foreign laws and regulatory requirements, including tax laws and laws regulating our operations and investments;

• volatility of overseas economic conditions, including fluctuations in foreign currency exchange rates;

• difficulties in enforcing creditors’ rights in foreign jurisdictions;

• risk of expropriation and exercise of sovereign immunity where the counterparty is a foreign government;

• difficulties in establishing, staffing and managing foreign operations;

• differing labor regulations;

• political and economic instability, natural calamities, war and terrorism;

• lack of familiarity with local markets and competitive conditions;

• changes in applicable laws and regulations in Korea that affect foreign operations; and

• obstacles to the repatriation of earnings and cash.

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Any failure by us to recognize or respond to these differences may adversely affect the success of our operations in those markets, which in turn could materially and adversely affect our business and results of operations.

Furthermore, while we seek to enter into overseas business opportunities in a prudent manner, some of our new international business ventures, such as mining and resource exploration, carry inherent risks that are different from our traditional business of electricity power generation, transmission and distribution. While the overseas businesses in the aggregate currently do not comprise a material portion of our overall business, as we are relatively inexperienced in these new types of overseas businesses, the actual revenues and profitability from, and investments and expenditures into, such ventures may be substantially different from what we plan or anticipate and may have a material adverse impact on our overall business, results of operations, financial condition and cash flows.

An increase in electricity generated by and/or sourced from private power producers may erode our market position and hurt our business, growth prospects, revenues and profitability.

As of December 31, 2016, we and our generation subsidiaries owned approximately 74.7% of the total electricity generation capacity in Korea (excluding plants generating electricity for private or emergency use). New entrants to the electricity business will erode our market share and create significant competition, which could have a material adverse impact on our financial condition and results of operations.

In particular, we compete with independent power producers with respect to electricity generation. The independent power producers accounted for 19.3% of total power generation in 2016 and 25.3% of total generation capacity as of December 31, 2016. As of December 31, 2016, there were 17 independent power producers in Korea, excluding renewable energy producers. Private enterprises became permitted to own and operate coal-fired power plants in Korea only after the Ministry of Trade, Industry and Energy approved plans for independent power producers to construct coal-fired power plants under the Sixth Basic Plan announced in February 2013. Under the Seventh Basic Plan announced in July 2015 as subsequently amended, eight coal-fired units with aggregate generation capacity of 7,420 megawatts are scheduled to be completed between 2017 and 2022, currently with no further plans for construction of coal-fired power plants by independent power producers beyond 2022. While it remains to be seen whether construction of these generation units will be completed as scheduled, if these units were to be completed as scheduled and/or independent power producers are permitted to build additional generation capacity (whether coal-fired or not), our market share in Korea may decrease, which may have a material adverse effect on our results of operations and financial condition.

In addition, under the Community Energy System adopted by the Government in 2004, a minimal amount of electricity is supplied directly to consumers on a localized basis by independent power producers outside the cost-based pool system used by our generation subsidiaries and most independent power producers to distribute electricity nationwide. The purpose of this system is to geographically decentralize electricity supply and thereby reduce transmission losses and improve the efficiency of energy use. These entities do not supply electricity on a national level but are licensed to supply electricity on a limited basis to their respective districts under the Community Energy System. As of March 31, 2017, the aggregate generation capacity of suppliers participating in the Community Energy System amounted to less than 1% of that of our generation subsidiaries in the aggregate. We currently do not expect the Community Energy System to be widely adopted, especially in light of the significant level of capital expenditure required for such direct supply. However, if the Community Energy System is widely adopted, it may erode our currently dominant market position in the generation and distribution of electricity in Korea and may have a material adverse effect on our business, results of operations and financial condition.

Our market dominance in the electricity distribution in Korea also may face potential erosion in light of the recent Proposal for Adjustment of Functions of Public Institutions (Energy Sector) announced by the Government in June 2016. This proposal contemplates a gradual opening of the electricity trading market to the

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private sector although no detailed roadmap has been provided for such opening. It is currently premature to predict to what extent, or in what direction, the liberalization of the electricity trading market will happen. Nonetheless, any significant liberalization of the electricity trading market may result in substantial reduction of our market share in electricity distribution in Korea, which would have a material adverse effect on our business, results of operation and cash flows.

See also Item 4.B. “Business Overview—Competition.”

Labor unrest may adversely affect our operations.

We and each of our generation subsidiaries have separate labor unions. As of December 31, 2016, approximately 69.5% of our and our generation subsidiaries’employees in the aggregate were members of these labor unions. Since asix-week labor strike in 2002 by union members of our generation subsidiaries in response to a proposed privatization of one of our generation subsidiaries, there has been no material labor dispute. However, we cannot assure you that there will not be a major labor strike or other material disruptions of operations by the labor unions of us and our generation subsidiaries if the Government resumes privatization or other restructuring initiatives or for other reasons. For example, the Government is currently contemplating a public offering of minority stakes in our six generation subsidiaries and KEPCO KDN, subject to prevailing market conditions and public policy considerations. In addition, in 2016, we and our generation subsidiaries expanded the scope of employees who will be subject to a performance pay system, under which a greater portion of their annual compensation will vary with performance level, rather than be fixed in advance. At some of our generation subsidiaries, these changes were made without union approval, and there is ongoing litigation to nullify these changes. If this issue is not resolved favorably to the employees affected by the recent changes to the compensation system, this could potentially result in some labor unrest. We cannot assure you that any incident of labor unrest will not lead to a major labor strike or other material disruptions of operations by the labor unions of us and our generation subsidiaries, which may adversely affect our business and results of operations.

Operation of nuclear power generation facilities inherently involves numerous hazards and risks, any of which could result in a material loss of revenues or increased expenses.

Through KHNP, we currently operate 25 nuclear-fuel generation units. Operation of nuclear power plants is subject to certain hazards, including environmental hazards such as leaks, ruptures and discharge of toxic and radioactive substances and materials. These hazards can cause personal injuries or loss of life, severe damage to or destruction of property and natural resources, pollution or other environmental damage,clean-up responsibilities, regulatory investigation and penalties and suspension of operations. Nuclear power has a stable and relatively inexpensive cost structure (which is least costly among the fuel types used by our generation subsidiaries) and is the second largest source of Korea’s electricity supply, accounting for 30.0% of electricity generated in Korea in 2016. Due to significantly lower unit fuel costs compared to those for thermal power plants, our nuclear power plants are generally operated at full capacity with only routine shutdowns for fuel replacement and maintenance, with limited exceptions.

From time to time, our nuclear generation units may experience unexpected shutdowns. For example, following an earthquake in the vicinity in September 2016, four nuclear generation units at the Wolsong site were shut down for approximately three months as part of a preventive and safety assurance program although these units were not directly affected by the earthquake. Any prolonged or substantial breakdown, failure or suspension of operation of a nuclear unit could result in a material loss of revenues, an increase in fuel costs related to the use of alternative power sources, additional repair and maintenance costs, greater risk of litigation and increased social and political hostility to the use of nuclear power, any of which could have a material adverse impact on our financial condition and results of operations.

In addition, heightened concerns regarding the safety of operating nuclear generation units could impede with our ability to operating them for an extended period of time or at all. For example, the nuclear power plant

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at Wolsong #1 unit began operations in 1982 and ended its operations in 2012 pursuant to its30-year operating license. In February 2015, the Nuclear Safety and Security Commission (“NSSC”) evaluated the safety of operating Wolsong #1 unit and approved its extended operation until November 2022. However, a civic group filed a lawsuit to annul such decision, and in February 2017, the Seoul Administrative Court ruled against the NSSC. The NSSC appealed this decision, and the civic group has filed an injunction to suspend the operation of the Wolsong #1 unit. KHNP, which currently is operating the unit pursuant to the NSSC initial decision, has joined this lawsuit. We cannot assure you whether the courts will ultimately rule to grant the extension of life for Wolsong #1. There are seven other nuclear generation units whose life under their initial operating license will expire in the next ten years, or by 2027. Thus, if the courts were to ultimately rule against the extension of life for Wolsong #1, we may find it more difficult to have the life of other nuclear units extended as well. The failure to extend the life of these units would result in a loss of revenues from such units and the increase in our overall fuel costs (as nuclear fuel is the cheapest compared to coal, LNG or oil), which could adversely affect our results of operation and financial condition. Furthermore, in September 2016,Greenpeace and 559 Korean nationals brought a lawsuit against the NSSC to revoke the permit the NSSC granted to KHNP in relation to the construction of Shin-Kori #5 and #6 nuclear generation units. This case is currently pending at the Seoul Administrative Court. If the courts were to ultimately rule against the construction of these new nuclear units, we will similarly experience a loss of revenues and an increase in fuel costs), which could adversely affect our results of operation and financial condition.

In order to prevent damages to the nuclear facilities such as a result of the tsunami and earthquake in March 2011 in Japan, KHNP prepared a comprehensive safety improvement plan including, but are not limited to, installing additional automatic shut-down systems for earthquakes, extending coastal barriers for seismic waves, procuring mobile power generators and storage batteries, installing passive hydrogen removers at nuclear facilities and improving the radiology emergency medical system. Allfollow-up measures were finalized in December 2015. However, there is no assurance that a similar or worse natural disaster may require the adoption and implementation of additional safety measures, which may be costly and have a material adverse impact on our financial condition and results of operations.

The construction and operation of our generation, transmission and distribution facilities involve difficulties, such as opposition from civic groups, which may have an adverse effect on us.

From time to time, we encounter social and political opposition against construction and operation of our generation facilities (particularly nuclear units) and, to a lesser extent, our transmission and distribution facilities. For example, we recently faced intense opposition from local residents and civic groups to the construction of transmission lines in the Milyang area, which we resolved through various compensatory and other support programs. Such opposition delayed the schedule for completion of this project. Although we and the Government have undertaken various community programs to address concerns of residents in areas near our facilities, civic and community opposition could result in delayed construction or relocation of our planned facilities, which could have a material adverse impact on our business and results of operations.

Our risk management policies and procedures may not be fully effective at all times.

In the course of our operations, we must manage a number of risks, such as regulatory risks, market risks and operational risks. Although we devote significant resources to developing and improving our risk management policies and procedures and expect to continue to do so in the future, our risk management practices may not be fully effective at all times in eliminating or mitigating risk exposures in all market environments or against all types of risk, including risks that are unidentified or unanticipated, such as natural disasters or employee misconduct. For example, in May 2013, the Nuclear Safety and Security Commission (“NSSC”) of Korea discovered that certain parts used in several of our then-operating nuclear generation units had been supplied based on forged testing results. This discovery led to full internal investigation and investigation by the Prosecutor’s Office, which in turn led to prosecutions and convictions of several current and former employees of KHNP on related and separate bribery charges, as well as termination of the then-president of KHNP as part of

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a broad disciplinary action. The incident also led to suspended operation of the related nuclear generation units for several months pending safety inspection. A similar incident involving forged testing results and bribery occurred also in November 2012. We and KHNP have fully cooperated with the authorities in terms of investigations as well as remedial and preventive measures, including enhanced internal compliance policies and procedures. We also believe we and our subsidiaries are in compliance in all material respects with internal compliance policies and procedures and all other additional safety measures initiated internally or required by regulatory and governmental agencies. However, we cannot assure you that, despite all precautionary and reform measures undertaken by us, these measures will prove to be fully effective at all times against all the risks we face or that an incident that that could cause harm to our reputation and operation will not happen in the future, including due to factors beyond our control.

Our risk management procedures may not prevent losses in debt and foreign currency positions.

We manage interest rate exposure for our debt instruments by limiting our variable rate debt exposure as a percentage of our total debt and closely monitoring the movements in market interest rates. We also actively manage currency exchange rate exposure for our foreign currency-denominated liabilities by measuring the potential loss therefrom using risk analysis software and entering into derivative contracts to hedge such exposure when the possible loss reaches a certain risk limit. To the extent we have unhedged positions or our hedging and other risk management procedures do not work as planned, our results of operations and financial condition may be adversely affected.

The amount and scope of coverage of our insurance are limited.

Substantial liability may result from the operations of our nuclear generation units, the use and handling of nuclear fuel and possible radioactive emissions associated with such nuclear fuel. KHNP carries insurance for its generation units and nuclear fuel transportation, and we believe that the level of insurance is generally adequate and is in compliance with relevant laws and regulations. In addition, KHNP is the beneficiary of Government indemnity which covers a portion of liability in excess of the insurance. However, such insurance is limited in terms of amount and scope of coverage and does not cover all types or amounts of losses which could arise in connection with the ownership and operation of nuclear plants. Accordingly, material adverse financial consequences could result from a serious accident or a natural disaster to the extent it is neither insured nor covered by the government indemnity.

In addition, ournon-nuclear generation subsidiaries carry insurance covering certain risks, including fire, in respect of their key assets, including buildings and equipment located at their respective power plants,construction-in-progress and imported fuel and procurement in transit. Such insurance and indemnity, however, cover only a portion of the assets that these generation subsidiaries own and operate and do not cover all types or amounts of loss that could arise in connection with the ownership and operation of these power plants. In addition, unlike us, our generation subsidiaries are not permitted to self-insure, and accordingly have not self-insured, against risks of their uninsured assets or business. Accordingly, material adverse financial consequences could result from a serious accident to the extent it is uninsured.

In addition, because neither we nor ournon-nuclear generation subsidiaries carry any insurance against terrorist attacks, an act of terrorism would result in significant financial losses. See Item 4.B. “Business Overview—Insurance.”

We may not be able to raise equity capital in the future without the participation of the Government.

Under applicable laws, the Government is required to directly or indirectly own at least 51% of our issued capital stock. As of December 31, 2016, the last day on which our shareholders’ registry was closed, the Government, directly and through Korea Development Bank (a statutory banking institution wholly owned by the Government), owned 51.1%of our issued capital stock. Accordingly, without changes in the existing Korean

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law, it may be difficult or impossible for us to undertake, without the participation of the Government, any equity financing in the future.

We may be exposed to potential claims made by current or previous employees for unpaid wages for the past three years under the expanded scope of ordinary wages and become subject to additional labor costs arising from the broader interpretation of ordinary wages under such decision.

Under the Labor Standards Act, an employee is legally entitled to “ordinary wages.” Under the guidelines previously issued by the Ministry of Employment and Labor, ordinary wages include base salary and certain fixed monthly allowances for work performed overtime during night shifts and holidays. Prior to the Supreme Court decision described below, many companies in Korea had typically interpreted these guidelines as excluding from the scope of ordinary wages fixed bonuses that are paid other than on a monthly basis, namely on abi-monthly, quarterly or semi-annual basis, although such interpretation had been a subject of controversy and had been overruled in a few court cases.

In December 2013, the Supreme Court of Korea ruled that regular bonuses fall under the category of ordinary wages on the condition that those bonuses are paid regularly and uniformly, and that any agreement which excludes such regular bonuses from ordinary wage is invalid. One of the key rulings provides that bonuses that are given to employees (i) on a regular and continuous basis and (ii) calculated according to the actual number of days worked (iii) that are not incentive-based must be included in the calculation of “ordinary wages.” The Supreme Court further ruled that in spite of invalidity of such agreements, employees shall not retroactively claim additional wages incurred due to such court decision, in case that such claims bring to employees unexpected benefits which substantially exceeds the wage level agreed by employers and employees and cause an unpredicted increase in expenditures for their company, which would lead the company to material managerial difficulty or would be a threat to the existence of the company. In that case, the claim is not acceptable since it is unjust and is in breach of the principle of good faith.

As a result of such ruling by the Supreme Court of Korea, we and our subsidiaries became subject to a number of lawsuits filed by various industry-wide and company-specific labor unions based on claims that ordinary wage had been paid without including certain items that should have been included as ordinary wage. In July 2016, the court ruled against us, and in accordance with the court’s ruling, in August 2016 we paid Won 55.1 billion to the employees for three years of back pay plus interest. As of December 31, 2016, 30 lawsuits were pending against our subsidiaries for an aggregate claim amount of Won 198 billion, for which our subsidiaries set aside an aggregate amount of Won 179 billion to cover any potential future payments of additional ordinary wage in relation to the related lawsuits. We cannot presently assure you that the court will not rule against our subsidiaries in these lawsuits, or that the foregoing reserve amount will be sufficient to cover the amounts payable under the court rulings. In such cases, it would adversely affect our results of operations. See Item 8.A. Consolidated Statements and Other Financial Information—Legal Proceedings.

We are subject to cyber security risk.

Recently, our activities have been subject to an increasing risk of cyber-attacks, the nature of which is continually evolving. For example, in December 2014, KHNP became subject to a cyber terror incident. According to the findings of the Prosecutor’s Office announced in March 2015, hackers suspected to be affiliated with North Korean authorities stole and distributed a mock blueprint for a hypothetical nuclear unit that had been devised for educational purposes, hacked into the computer network of former KHNP employees and threatened to shut down certain of KHNP’s nuclear plants. The hacking incident did not jeopardize our nuclear operation in any material respect and none of the stolen information was material to our nuclear operation or the national nuclear policy. In response to such incident, we and our subsidiaries have further bolstered anti-hacking and other preventive and remedial measures in relation to potential cyber terror. However, there is no assurance that a similar or more serious hacking or other forms of cyber terror will not happen with respect to us and our generation subsidiaries, which could have a material adverse impact on our business, financial condition and results of operations.

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We engage in limited activities relating to Iran and may become subject to sanctions under relevant laws and regulations of the United States and other jurisdictions as a result of such activities, which may adversely affect our business and reputation.

The U.S. Department of the Treasury’s Office of Foreign Assets Control, or OFAC, administers and enforces certain laws and regulations (which we refer to as the OFAC sanctions) that impose restrictions upon activities or transactions within U.S. jurisdiction with certain countries, governments, entities and individuals that are the subject of OFAC sanctions, including Iran. Even thoughnon-U.S. persons generally are not directly bound by the OFAC sanctions, in recent years the OFAC has asserted that suchnon-U.S. persons can be held liable on various legal theories if they engage in transactions completed in part in the United States or by U.S. persons (such as, for example, wiring an international payment that clears through a bank branch in New York). The European Union also enforces certain laws and regulations that impose restrictions upon nationals and entities of, and business conducted in, member states with respect to activities or transactions with certain countries, governments, entities and individuals that are the subject of such laws and regulations, including Iran. The United Nations Security Council and other governmental entities also impose similar sanctions.

In addition to the OFAC sanctions described above, the United States also maintains indirect sanctions under authority of, among others, the Iran Sanctions Act, the Comprehensive Iran Sanctions, Accountability and Divestment Act of 2010, or CISADA, the National Defense Authorization Act for Fiscal Year 2012, or the NDAA, the Iran Threat Reduction and Syria Human Rights Act of 2012, or ITRA, various Executive Orders, and the Iran Freedom and Counter-Proliferation Act of 2012, or IFCA. These indirect sanctions, which we refer to collectively as U.S. secondary sanctions, provide authority for the imposition of U.S. sanctions on foreign parties that provide services in support of certain Iranian activities in the energy, shipping and military sectors, among others.

On July 14, 2015, theso-called “P5+1” powers (consisting of the United States, the United Kingdom, Germany, France, Russia, and China) and the European Union, or the EU, entered into an agreement with Iran known as the Joint Comprehensive Plan of Action Regarding the Islamic Republic of Iran’s Nuclear Program, or the JCPOA. The JCPOA is intended to significantly restrict Iran’s ability to develop and produce nuclear weapons. Upon implementation of the JCPOA on January 16, 2016 the United States, the EU, and the UN suspended certain nuclear-related sanctions against Iran following an announcement by the International Atomic Energy Agency that Iran had fulfilled its initial obligations under the JCPOA.

The U.S. secondary sanctions that were suspended on January 16, 2016 have not been repealed. Rather, certain waivers of statutory provisions were put into place, certain Presidential Executive Orders were revoked, and certain persons were removed from the relevant U.S. denied parties lists. Under the JCPOA, sanctions may bere-imposed if the United States or any other member of the P5+1 or the EU invokes provisions of the JCPOA for there-imposition of sanctions. Additionally, the United States, the EU, or the UN may impose new sanctions against Iran or against persons conducting business in Iran even while the JCPOA remains in force.

Violations of OFAC sanctions via transactions with a U.S. jurisdictional nexus can result in substantial civil or criminal penalties. A range of sanctions may be imposed on companies that engage in sanctionable activities within the scope of U.S. secondary sanctions, including, among other things, the blocking of any property subject to U.S. jurisdiction in which the sanctioned company has an interest, which could include a prohibition on transactions or dealings involving securities of the sanctioned company pursuant to CISADA.

In Iran, we are currently engaged in limited business activities, none of which has progressed beyond the early development stage. Our activities in Iran are managed by a representative office located in Tehran, Iran. None of our activities in Iran involve U.S. persons or our U.S. affiliates. Our counterparties in the projects described below are Iranian governmental entities or Iranian state-owned enterprises.

Since all of our activities in Iran are at the early development stage, we have not realized any revenue or profit from such activities. We also have notto-date made any investments in Iran, other than incur expenses to run our representative office in Tehran in the ordinary course of business.

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A summary of our current projects in Iran follows.

• We have entered into a cooperation agreement with Tavanir, an Iranian state-owned electricity provider, under which we would carry out a pilot “advanced metering infrastructure (AMI)” project. AMI enables checking the electricity usage amount remotely. The project is being conducted in Pak Dasht City and Hormuz Island, Iran. This project involves installing over approximately 2,500 smart meters. The development and production of AMI equipment and materials are complete, and we have obtained permission from the Ministry of Trade, Energy and Industry of Korea to export the equipment. We currently plan to ship the AMI equipment and materials to Iran during April 2017, install them in May 2017, and complete the project by July 2017.

• We are in the process of negotiating various agreements with Tavanir under which we would provide consulting services relating to (i) improvement of Iran’s electricity demand through load management, efficiency improvement and tariff system improvement, (ii) formation of a roadmap for intelligent electricity transmission system in Iran by improving transmission reliability and implementing automation, (iii) reduction of electricity loss during transmission in the electricity system of Iran, (iv) development of a clean development mechanism (CDM) for the recovery and recycling of the sulfur hexafluoride gas in Iran for purposes of carbon emission reduction, and (v) modeling the installation of energy storage systems in Iran. Funding for the last project will be provided by the Ministry of Trade, Industry and Energy of Korea under its Official Development Aid program.

• We have participated in a feasibility study of the proposed adoption by Tavanir of a 765 kV electricity transmission network. Our task involved reviewing Tavanir’s feasibility report. A final report summarizing our review of the feasibility report and a technical review of the transmission network was submitted in February 2017.

• We are in the process of negotiating a contract with Thermal Power Plant Holding Company of Iran under which we would build and operate combined cycle power plants at Zanjan and Neyzar, Iran.

• We have submitted a draft proposal to the Iran Energy Efficiency Organization under which we would provide consulting services in relation to AMI security in Iran.

• We are in the process of conducting a feasibility study for a solar power project in Iran.

• Our wholly-owned subsidiary, Korea Western Power, is currently pursuing a “build, operate and transfer” project relating to a 500 megawatts combined cycle power plant in Sirjan, Kerman in Iran, through a consortium with Daewoo E&C, a Korean construction company, and Gohar Energy, an Iranian energy company. The consortium is currently conducting a feasibility study.

• Korea Electric Power Research Institute, which is operated by us, has entered into cooperation agreements with Iran’s Niroo Research Institute regarding various joint research and development efforts relating to power plants and renewable energy.

We also discontinued the following projects in Iran after feasibility studies: (i) a pilot project to replace aged transformers (30 years or older) in Teheran in cooperation with Tavanir, and (ii) a pilot project for installation, in cooperation with Tavanir, of a remote control system for air conditioning in public institutions in Teheran. We also withdrew from a proposed project sponsored by Thermal Power Plant Holding Company for the rehabilitation, operation, maintenance, and management of the Bandar-Abbas power plant in Homorzgan, Dogerdan due to unavailability of financing.

We have internal policies and procedures, as well as a monitoring system, which are designed to prevent and detect violations of applicable laws, including applicable sanctions laws. We do not believe that our current activities relating to Iran violate OFAC sanctions or are sanctionable under U.S. secondary sanctions, and in any event, we believe we are in compliance with applicable sanctions laws. As noted above, for the pilot AMI project, we are in the process of exporting a limited amount of U.S.-origin goods to Iran. We believe we are not in violation of any laws concerningre-exports of U.S.-origin goods to Iran. Moreover, to the extent our activities

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were sanctionable under those U.S. secondary sanctions programs that were lifted pursuant to the JCPOA, U.S. authorities have indicated that sanctions will not be imposed pursuant to the suspended U.S. secondary sanctions.

Nevertheless, there can be no assurances that therelevant relief will continue to be available in the future, and even if it does, there is no guarantee that our activities relating to Iran will not be found to violate the OFAC sanctions or involve sanctionable activities under U.S. secondary sanctions, or that any other government will not determine that our activities violate applicable sanctions of other countries. Laws related to Iran sanctions are complex, dynamic, and subject to evolving interpretations by the regulatory authorities. There-imposition or “snap-back” of U.S. sanctions pursuant to the JCPOA could also occur, and the scopeof re-imposed sanctions would be determined at that time, although sanctions would not be retroactively applied to activities properly engaged in while sanctions relief was in effect.

Violations of sanctions can result in penalties or other consequences adverse to us. Certain of our counterparties may be subjected to sanctions. If we violate the sanctions we may ourselves be subjected to sanctions or penalties. Our business and results of operations may be adversely affected or we may suffer reputational damage. In addition, such sanctions may prevent us from consummating or continuing any of the projects we are currently pursuing in Iran, which could adversely affect our results of operations. Also, at any time, certain investors may divest their interests in our shares if we are found to have violated or are suspected of violating applicable sanctions law arising from our operation in a sanctioned country such as Iran.

Risks Relating to Korea and the Global Economy

Unfavorable financial and economic conditions in Korea and globally may have a material adverse impact on us.

We are incorporated in Korea, where most of our assets are located and most of our income is generated. As a result, we are subject to political, economic, legal and regulatory risks specific to Korea, and our business, results of operations and financial condition are substantially dependent on the Korean consumers’ demand for electricity, which are in turn largely dependent on developments relating to the Korean economy.

The Korean economy is closely integrated with, and is significantly affected by, developments in the global economy and financial markets. In recent years, adverse conditions and volatility in the worldwide financial markets, fluctuations in oil and commodity prices and the general weakness of the global economy have contributed to the uncertainty of global economic prospects in general and have adversely affected, and may continue to adversely affect, the Korean economy, which in turn could adversely affect our business, financial condition and results of operations. As the Korean economy is highly dependent on the health and direction of the global economy, the prices of our securities may be adversely affected by investors’ reactions to developments in other countries. In addition, due to the ongoing volatility in the global financial markets, the value of the Won relative to the U.S. dollar has also fluctuated significantly in recent years, which in turn also may adversely affect our financial condition and results of operations.

Factors that determine economic and business cycles in the Korean or global economy are for the most part beyond our control and inherently uncertain. In light of the high level of interdependence of the global economy, any of the foregoing developments could have a material adverse effect on the Korean economy and financial markets, and in turn on our business and profitability.

More specifically, factors that could have an adverse impact on Korea’s economy in the future include, among others:

• increases in inflation levels, volatility in foreign currency reserve levels, commodity prices (including oil prices), exchange rates (particularly against the U.S. dollar), interest rates, stock market prices and inflows and outflows of foreign capital, either directly, into the stock markets, through derivatives or

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otherwise, including as a result of increased uncertainty in the wake of a referendum in the United Kingdom in June 2016 that voted in favor of exiting from the European Union, commonly known as “Brexit”;

• difficulties in the financial sectors in Europe, China and elsewhere and increased sovereign default risks in select countries and the resulting adverse effects on the global financial markets;

• adverse developments in the economies of countries and regions to which Korea exports goods and services (such as the United States, Europe, China and Japan), or in emerging market economies in Asia or elsewhere that could result in a loss of confidence in the Korean economy, including potentially as a result of the Brexit;

• social and labor unrest or declining consumer confidence or spending resulting fromlay-offs, increasing unemployment and lower levels of income;

• uncertainty and volatility and further decreases in the market prices of Korean real estate;

• a decrease in tax revenues and a substantial increase in the Government’s expenditures for unemployment compensation and other social programs that together could lead to an increased Government budget deficit;

• political uncertainty, including as a result of increasing strife among or within political parties in Korea, and political gridlock within the government or in the legislature, which prevents or disrupts timely and effective policy making to the detriment of Korean economy, as well as the upcoming special presidential election in May 2017 following the impeachment and indictment of the most recent president following a series of scandals and social unrest, which also involved the investigation of several leading Korean conglomerates and arrest of their leaders on charges of bribery and other possible misconduct;

• deterioration in economic or diplomatic relations between Korea and its trading partners or allies, including deterioration resulting from territorial or trade disputes or disagreements in foreign policy, including as a result of any potential renegotiation of free trade agreements, or the ongoing tension between Korean and China in relation to the decision to allow deployment by the United States of the Terminal High Altitude Defense system known as “THAAD” in Korea;

• increases in social expenditures to support the aging population in Korea or decreases in economic productivity due to the declining population size in Korea;

• any other development that has a material adverse effect in the global economy, such as an act of war, the spread of terrorism or a breakout of an epidemic such as SARS, avian flu, swine flu, Middle East Respiratory Syndrome, ebola or Zika virus, or natural disasters, earthquakes and tsunamis and the related disruptions in the relevant economies with global repercussions;

• hostilities involvingoil-producing countries in the Middle East and elsewhere and any material disruption in the supply of oil or a material increase in the price of oil resulting from such hostilities; and

• an increase in the level of tensions or an outbreak of hostilities in the Korean peninsula or between North Korea and the United States.

Any future deterioration of the Korean economy could have an adverse effect on our business, financial condition and results of operations.

Political and societal unrest surrounding the impeachment of a former president and an upcoming special presidential election could adversely affect the Korean economy and our business.

In November 2016, the Korean prosecutor’s office indicted a confidant of President ParkGeun-hye who had allegedly used her ties with the President to extort donations from Korean business groups for personal benefit,

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as well as a number of current and former presidential aides, on charges of, among others, abuse of power, coercion and leaking classified documents. On December 9, 2016, the National Assembly voted in favor of impeaching President Park for a number of alleged constitutional and criminal violations. President Park was suspended from power immediately, with the prime minister simultaneously taking over the role of acting President. On March 10, 2017, the Constitutional Court unanimously upheld the parliamentary vote to impeach President Park on grounds, among others, of abuse of power and failure to uphold the Constitution, which triggered her immediate dismissal. On March 31, 2017, the Seoul Central District Court issued an arrest warrant for former President Park in connection with such investigation. In connection with its investigation of former President Park, the special independent prosecutor also conducted related investigations of several large Korean business groups and members of their senior management for bribery, embezzlement and other possible misconduct, which the Korean prosecutor’s office has continued following the end of the special independent prosecutor’s term. These developments lead to mass rallies across Korea between those in support of former President Park and those against.

A special election to elect a new President is scheduled to be held on May 9, 2017. It is presently unclear who will be elected as the new president and what policies the new administration will pursue, including those that may affect the energy industry and our business.

Therefore, we cannot assure you that the events described above will not have a material adverse effect on the Korean economy and our business, financial condition and results of operations.

Tensions with North Korea could have an adverse effect on us and the market value of our shares.

Relations between Korea and North Korea have been tense throughout Korea’s modern history. The level of tension between the two Koreas has fluctuated and may increase abruptly as a result of current and future events. In particular, there continues to be uncertainty regarding the long-term stability of North Korea’s political leadership since the succession of Kim Jong-un to power following the death of his father in December 2011, which has raised concerns with respect to the political and economic future of the region.

In addition, there continues to be heightened security tension in the region stemming from North Korea’s hostile military and diplomatic actions, including in respect of its nuclear weapons and long-range missile programs. Some examples from recent years include the following:

• In March 2017, North Korea launched fourmid-range missiles, which landed off the east coast of the Korean peninsula.

• On September 9, 2016, North Korea conducted its fifth nuclear test, which has been the largest in scale among North Korea’s nuclear tests thus far. According to North Korean announcements, the test was successful in detonating a nuclear missile. The test created a sizable earthquake in South Korea. In response, in February 2017 the U.N. Security Council adopted Resolution 2321 (2016) against North Korea, the purpose of which is to strengthen its sanctions regime against North Korea and to condemn North Korea’s September 9, 2016 nuclear test in the strongest terms.

• On February 10, 2016, in retaliation of North Korea’s recent launch of a long-range rocket, South Korea announced that it would halt its operations of the Kaesong Industrial Complex to impede North Korea’s utilization of funds from the industrial complex to finance its nuclear and missile programs. In response, North Korea announced on February 11, 2016 that it would expel all South Korean employees from the industrial complex and freeze all South Korean assets there.

• On February 7, 2016, North Korea launched a rocket, claimed by them to be carrying a satellite intended for scientific observation. The launch was widely suspected by the international community to be a cover for testing a long-range missile capable of carrying a nuclear warhead. On February 18, 2016, the President of the United States signed into law mandatory sanctions on North Korea to punish

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it for its recent nuclear and missile tests, human rights violations and cybercrimes. The bill, which marks the first measure by the United States to exclusively target North Korea, is intended to seize the assets of anyone engaging in business related to North Korea’s weapons program, and authorizes US$50 million over five years to transmit radio broadcasts into the country and support humanitarian assistance projects. On March 2, 2016, the United Nations Security Council voted unanimously to adopt a resolution to impose sanctions against North Korea, which include inspection of all cargo going to and from North Korea, a ban on all weapons trade and the expulsion of North Korean diplomats who engage in “illicit activities.” Also, on March 4, 2016, the European Union announced that it would expand its sanctions on North Korea, adding additional companies and individuals to its list of sanction targets. On April 1, 2016, North Korea fired a short-rangesurface-to-air missile in apparent protest of these sanctions adopted by the United States and the United Nations Security Council.

• On January 6, 2016, North Korea announced that it had successfully conducted its first hydrogen bomb test, hours after international monitors detected a 5.1 magnitude earthquake near a known nuclear testing site in the country. The claims have not been verified independently. The alleged test followed a statement made in the previous month by Kim Jong-un, who claimed that North Korea had developed a hydrogen bomb.

• In August 2015, two Korean soldiers were injured in a landmine explosion near the South Korean demilitarized zone. Claiming the landmines were set by North Koreans, the South Korean armyre-initiated its propaganda program toward North Korea utilizing loudspeakers near the demilitarized zone. In retaliation, the North Korean army fired artillery rounds on the loudspeakers, resulting in the highest level of military readiness for both Koreas. High-ranking officials from North and South Korea subsequently met for discussions and entered into an agreement on August 25, 2015 intending to deflate military tensions.

• From time to time, North Korea has fired short- to medium-range missiles from the coast of the Korean peninsula into the sea. In March 2015, North Korea fired sevensurface-to-air missiles into waters off its east coast in apparent protest of annual joint military exercises being held by Korea and the United States.

• North Korea renounced its obligations under the NuclearNon-Proliferation Treaty in January 2003 and conducted three rounds of nuclear tests between October 2006 to February 2013, which increased tensions in the region and elicited strong objections worldwide. In response, the United Nations Security Council unanimously passed resolutions that condemned North Korea for the nuclear tests and expanded sanctions against North Korea.

North Korea’s economy also faces severe challenges, including severe inflation and food shortages, which may further aggravate social and political tensions within North Korea. In addition, reunification of Korea and North Korea could occur in the future, which would entail significant economic commitment and expenditure by Korea that may outweigh any resulting economic benefits of reunification.

There can be no assurance that the level of tension on the Korean peninsula will not escalate in the future or that the political regime in North Korea may not suddenly collapse. Any further increase in tension or uncertainty relating to the military, political or economic stability in the Korean peninsula, including a breakdown of diplomatic negotiations over the North Korean nuclear program, occurrence of military hostilities, heightened concerns about the stability of North Korea’s political leadership or its actual collapse, a leadership crisis, a breakdown of high-level contacts or accelerated reunification could have a material adverse effect on our business, financial condition and results of operations, as well as the price of our common shares and our American depositary shares.

We are generally subject to Korean corporate governance and disclosure standards, which differ in significant respects from those in other countries.

Companies in Korea, including us, are subject to corporate governance standards applicable to Korean public companies which differ in many respects from standards applicable in other countries, including the

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United States. As a reporting company registered with the Securities and Exchange Commission and listed on the New York Stock Exchange, we are, and will continue to be, subject to certain corporate governance standards as mandated by the Sarbanes-Oxley Act of 2002, as amended. However, foreign private issuers, including us, are exempt from certain corporate governance standards required under the Sarbanes-Oxley Act or the rules of the New York Stock Exchange. We and our generation subsidiaries are also subject to a number of special laws and regulations to Government-controlled entities, including the Act on the Management of Public Institutions. For a description of significant differences in corporate governance standards, see Item 16.G. “Corporate Governance.” There may also be less publicly available information about Korean companies, such as us, than is regularly made available by public ornon-public companies in other countries. Such differences in corporate governance standards and less public information could result in less than satisfactory corporate governance practices or disclosure to investors in certain countries.

You may not be able to enforce a judgment of a foreign court against us.

We are a corporation with limited liability organized under the laws of Korea. Substantially all of our directors and officers and other persons named in this annual report reside in Korea, and all or a significant portion of the assets of our directors and officers and other persons named in this annual report and substantially all of our assets are located in Korea. As a result, it may not be possible for holders of the American depository shares to affect service of process within the United States, or to enforce against them or us in the United States judgments obtained in United States courts based on the civil liability provisions of the federal securities laws of the United States. There is doubt as to the enforceability in Korea, either in original actions or in actions for enforcement of judgments of United States courts, of civil liabilities predicated on the United States federal securities laws.

Risks Relating to Our American Depositary Shares

There are restrictions on withdrawal and deposit of common shares under the depositary facility.

Under the deposit agreement, holders of shares of our common stock may deposit those shares with the depositary bank’s custodian in Korea and obtain American depositary shares, and holders of American depositary shares may surrender American depositary shares to the depositary bank and receive shares of our common stock. However, under current Korean laws and regulations, the depositary bank is required to obtain our prior consent for the number of shares to be deposited in any given proposed deposit which exceeds the difference between (i) the aggregate number of shares deposited by us for the issuance of American depositary shares (including deposits in connection with the initial and all subsequent offerings of American depositary shares and stock dividends or other distributions related to these American depositary shares) and (ii) the number of shares on deposit with the depositary bank at the time of such proposed deposit. We have consented to the deposit of outstanding shares of common stock as long as the number of American depositary shares outstanding at any time does not exceed 80,153,810 shares. As a result, if you surrender American depositary shares and withdraw shares of common stock, you may not be able to deposit the shares again to obtain American depositary shares.

Ownership of our shares is restricted under Korean law.

Under the Financial Investment Services and Capital Markets Act, with certain exceptions, a foreign investor may acquire shares of a Korean company without being subject to any single or aggregate foreign investment ceiling. As one such exception, certain designated public corporations, such as us, are subject to a 40% ceiling on acquisitions of shares by foreigners in the aggregate. The Financial Services Commission may impose other restrictions as it deems necessary for the protection of investors and the stabilization of the Korean securities and derivatives market.

In addition to the aggregate foreign investment ceiling, the Financial Investment Services and Capital Markets Act and our Articles of Incorporation set a 3% ceiling on acquisition by a single investor (whether

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domestic or foreign) of the shares of our common stock. Any person (with certain exceptions) who holds our issued and outstanding shares in excess of such 3% ceiling cannot exercise voting rights with respect to our shares exceeding such limit.

The ceiling on aggregate investment by foreigners applicable to us may be exceeded in certain limited circumstances, including as a result of acquisition of:

• shares by a depositary issuing depositary receipts representing such shares (whether newly issued shares or outstanding shares);

• shares by exercise of warrant, conversion right under convertible bonds, exchange right under exchangeable bonds or withdrawal right under depositary receipts issued outside of Korea;

• shares from the exercise of shareholders’ rights; or

• shares by gift, inheritance or bequest.

A foreigner who has acquired our shares in excess of any ceiling described above may not exercise his voting rights with respect to our shares exceeding such limit and the Financial Services Commission may take necessary corrective action against him.

Holders of our ADSs will not have preemptive rights in certain circumstances.

The Korean Commercial Code and our Articles of Incorporation require us, with some exceptions, to offer shareholders the right to subscribe for new shares in proportion to their existing ownership percentage whenever new shares are issued. If we offer any rights to subscribe for additional shares of our common stock or any rights of any other nature, the depositary bank, after consultation with us, may make the rights available to you or use reasonable efforts to dispose of the rights on your behalf and make the net proceeds available to you. The depositary bank, however, is not required to make available to you any rights to purchase any additional shares unless it deems that doing so is lawful and feasible and:

• a registration statement filed by us under the U.S. Securities Act of 1933, as amended, is in effect with respect to those shares; or

• the offering and sale of those shares is exempt from or is not subject to the registration requirements of the U.S. Securities Act.

We are under no obligation to file any registration statement with the U.S. Securities and Exchange Commission in relation to the registration rights. If a registration statement is required for you to exercise preemptive rights but is not filed by us, you will not be able to exercise your preemptive rights for additional shares and you will suffer dilution of your equity interest in us.

The market value of your investment in our ADSs may fluctuate due to the volatility of the Korean securities market.

Our common stock is listed on the KRX KOSPI Division of the Korea Exchange, which has a smaller market capitalization and is more volatile than the securities markets in the United States and many European countries. The market value of ADSs may fluctuate in response to the fluctuation of the trading price of shares of our common stock on the Stock Market Division of the Korea Exchange. The Stock Market Division of the Korea Exchange has experienced substantial fluctuations in the prices and volumes of sales of listed securities and the Stock Market Division of the Korea Exchange has prescribed a fixed range in which share prices are permitted to move on a daily basis. Like other securities markets, including those in developed markets, the Korean securities market has experienced problems including market manipulation, insider trading and settlement failures. The recurrence of these or similar problems could have a material adverse effect on the market price and liquidity of the securities of Korean companies, including our common stock and ADSs, in both the domestic and the international markets.

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The Korean government has the ability to exert substantial influence over many aspects of the private sector business community, and in the past has exerted that influence from time to time. For example, the Korean government has promoted mergers to reduce what it considers excess capacity in a particular industry and has also encouraged private companies to publicly offer their securities. Similar actions in the future could have the effect of depressing or boosting the Korean securities market, whether or not intended to do so. Accordingly, actual or perceived actions or inactions by the Korean government may cause sudden movements in the market prices of the securities of Korean companies in the future, which may affect the market price and liquidity of our common stock and ADSs.

Your dividend payments and the amount you may realize in connection with a sale of your ADSs will be affected by fluctuations in the exchange rate between the U.S. dollar and the Won.

Investors who purchase the American depositary shares will be required to pay for them in U.S. dollars. Our outstanding shares are listed on the Korea Exchange and are quoted and traded in Won. Cash dividends, if any, in respect of the shares represented by the American depositary shares will be paid to the depositary bank in Won and then converted by the depositary bank into U.S. dollars, subject to certain conditions. Accordingly, fluctuations in the exchange rate between the Won and the U.S. dollar will affect, among other things, the amounts a registered holder or beneficial owner of the American depositary shares will receive from the depositary bank in respect of dividends, the U.S. dollar value of the proceeds which a holder or owner would receive upon sale in Korea of the shares obtained upon surrender of American depositary shares and the secondary market price of the American depositary shares.

If the Government deems that certain emergency circumstances are likely to occur, it may restrict the depositary bank from converting and remitting dividends in U.S. dollars.

If the Government deems that certain emergency circumstances are likely to occur, it may impose restrictions such as requiring foreign investors to obtain prior Government approval for the acquisition of Korean securities or for the repatriation of interest or dividends arising from Korean securities or sales proceeds from disposition of such securities. These emergency circumstances include any or all of the following:

• sudden fluctuations in interest rates or exchange rates;

• extreme difficulty in stabilizing the balance of payments; and

• a substantial disturbance in the Korean financial and capital markets.

The depositary bank may not be able to secure such prior approval from the Government for the payment of dividends to foreign investors when the Government deems that there are emergency circumstances in the Korean financial markets.

ITEM 4. INFORMATION ON THE COMPANY

Item 4.A. History and Development of the Company

General Information

Our legal and corporate name is Korea Electric Power Corporation. We were established by the Government on December 31, 1981 as a statutory juridical corporation in Korea under the Korea Electric Power Corporation (“KEPCO”) Act as the successor to Korea Electric Company. Our registered office is located at 55Jeollyeok-ro,Naju-si, Jeollanam-do, 58217, Korea, and our telephone number is82-61-345-4213. Our website address is www.kepco.co.kr.

Our agent in the United States is Korea Electric Power Corporation, North America Office, located at 7th Floor, Parker Plaza, 400 Kelby Street, Fort Lee, NJ 07024.

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The Korean electric utility industry traces its origin to the establishment of the first electric utility company in Korea in 1898. On July 1, 1961, the industry was reorganized by the merger of Korea Electric Power Company, Seoul Electric Company and South Korea Electric Company, which resulted in the formation of Korea Electric Company. From 1976 to 1981, the Government acquired the private minority shareholdings in Korea Electric Company. After the Government acquired all the remaining shares of Korea Electric Company, Korea Electric Company was dissolved, and we were incorporated in 1981 and assumed the assets and liabilities of Korea Electric Company. We ceased to be wholly owned by the Government in 1989 when the Government sold 21% of our common stock. As of December 31, 2016, the last day on which our shareholders registry was closed, the Government maintained 51.1% ownership in aggregate of our common shares by direct holdings by the Government and indirect holdings through Korea Development Bank, a statutory banking institution wholly owned by the Government.

Under relevant laws of Korea, the Government is required to own, directly or indirectly, at least 51% of our capital. Direct or indirect ownership of more than 50% of our outstanding common stock enables the Government to control the approval of certain corporate matters relating to us that require a shareholders’ resolution, including approval of dividends. The rights of the Government and Korea Development Bank as holders of our common stock are exercised by the Ministry of Trade, Industry and Energy, based on the Government’s ownership of our common stock and a proxy received from Korea Development Bank, in consultation with the Ministry of Strategy and Finance.

We operate under the general supervision of the Ministry of Trade, Industry and Energy. The Ministry of Trade, Industry and Energy, in consultation with the Ministry of Strategy and Finance, is responsible for approving, subject to review by the Korea Electricity Commission, the electricity rates we charge our customers. See Item 4.B. “Business Overview—Sales and Customers—Electricity Rates.” We furnish reports to officials of the Ministry of Trade, Industry and Energy, the Ministry of Strategy and Finance and other Government agencies and regularly consult with such officials on matters relating to our business and affairs. See Item 4.B. “Business Overview—Regulation.” Ournon-standing directors, who comprise a majority of our board of directors, must be appointed by the Ministry of Strategy and Finance following the review and resolution of the Public Agencies Operating Committee (which is established by law and chaired by the minister of the Ministry of Strategy and Finance and whose members consist of Government officials and others appointed by the President of the Republic based on recommendation by the minister of the Ministry of Strategy and Finance) from a pool of candidates recommended by the director nomination committee and an approval at the general meeting of shareholders. Our president and standing directors who concurrently serve as members of our audit committee must be appointed by the President of the Republic upon the motion of the minister of the Ministry of Trade, Industry and Energy (in the case of our president) and the minister of the Ministry of Strategy and Finance (in the case of our standing directors who concurrently serve as members of the audit committee) and following the nomination by our director nomination committee, the review and resolution of the Public Agencies Operating Committee and an approval at the general meeting of shareholders. See Item 6.A. “Directors and Senior Management—Board of Directors” and Item 16.G. “Corporate Governance—The Act on the Management of Public Institutions”)

Item 4.B. Business Overview

Introduction

We are an integrated electric utility company engaged in the transmission and distribution of substantially all of the electricity in Korea. Through our six wholly-owned generation subsidiaries, we also generate the substantial majority of electricity produced in Korea. As of December 31, 2016, we and our generation subsidiaries owned approximately 74.7% of the total electricity generation capacity in Korea (excluding plants generating electricity primarily for private or emergency use). In 2016, we sold to our customers approximately 497,039 gigawatt-hours of electricity. We purchase electricity principally from our generation subsidiaries and, to a lesser extent, from independent power producers. Of the 508,879 gigawatt-hours of electricity we purchased

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in 2016, 31.2% was generated by KHNP, our wholly-owned nuclear and hydroelectric power generation subsidiary, 50.3% was generated by our wholly-owned fivenon-nuclear generation subsidiaries and 18.5% was generated by independent power producers that trade electricity to us through the cost-based pool system of power trading (excluding independent power producers that supply electricity under power purchase agreements with us). Our fivenon-nuclear generation subsidiaries are KOSEP, KOMIPO, KOWEPO, KOSPO and EWP, each of which is wholly owned by us and is incorporated in Korea. We derive substantially all of our revenues and profit from Korea, and substantially all of our assets are located in Korea.

In 2016, we had sales of Won 59,763 billion and net profit of Won 7,148 billion, compared to sales of Won 58,582 billion and net profit of Won 13,416 billion in 2015 .

Our revenues are closely tied to demand for electricity in Korea. Demand for electricity in Korea increased at a compounded average growth rate of 1.6% per annum from 2012 to 2016, compared to the real gross domestic product, or GDP, which increased at a compounded average growth rate of 3.0% during the same period, according to the Bank of Korea. During 2016, the GDP growth rate was 2.8%, which was in tandem with the growth in demand for electricity in Korea during the same year, which also grew by 2.8%.

Strategy

As our overall strategy, we seek to become a leading global energy enterprise by enhancing our global competitiveness and strengthening our contribution to the global environmental campaigns through continued development of “green” and “smart” power-related technologies. We also aim to adapt to the growing uncertainties in the global economy by selectively pursuing new business opportunities and through development of innovative technologies. We evaluate and renew ourmid- to long-term strategy every five years, and in 2015 established the “Vision 2025Mid- to Long-Term Strategy.” Under this vision, we will aim for balanced growth among our domestic operations, overseas business and new energy industry initiatives.

• Strengthen competitiveness in our core operations. We plan to enhance efficiency of our electricity generation, transmission and distribution networks and operation of related facilities. We will strategically focus on ensuring stable supply of electricity, making our electricity networks “smarter” and more intelligent through the use of advanced technology utilizing big data and the “Internet of Things” technology and creating new energy services related to our core operations in order to address changes in the business environment.

• Expand and develop new businesses. In connection with our overseas business, we plan to selectively explore opportunities to develop renewable energy, smart transmission and distribution facilities and nuclear energy projects to diversify our businesses and provide suitable solutions meeting the different needs of various countries. Additionally, we plan to actively address climate change through the development of new energy related technologies such as smart grids and energy storage systems.

• Create a platform for future growth. We plan to develop an ecosystem focused on new energy technologies. We have established Bitgaram Energy Valley in Naju with the goal of facilitating the growth of the new energy industry and creating a global energy hub. In addition, we have selected ten core electricity-related technologies (including energy storage systems and “smart grid”-related technologies), and we plan to focus on the development of high value-added technologies.

• Strengthen our management system for sustainable growth. We will continue to develop an innovative working culture and management system to promote efficiency. We will also focus on creatinga low-carbon clean energy business environment, fostering a common set of shared values with local communities and developing a sustainable energy business model.

Recent Developments

Proposal for Adjustment of Functions of Public Institutions (Energy Sector)

In June 2016, the Government announced the Proposal for Adjustment of Functions of Public Institutions (Energy Sector) for the purpose of streamlining the operations of government-affiliated energy companies by

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discouraging them from engaging in overlapping or similar businesses with each other, reducingnon-core assets and activities and improving management and operational efficiency. The initiatives contemplated in this proposal that would affect us and our generation subsidiaries include the following: (i) the generation companies should take on greater responsibilities in overseas resource exploration and production projects as these involve procurement of fuels necessary for electricity generation while fostering cooperation among each other through closer coordination; (ii) KHNP should take a greater role in export of nuclear technology; and (iii) the current system of retail sale of electricity toend-users should be liberalized to encourage more competition. In accordance therewith, we transferred a substantial portion of our assets and liabilities in our overseas resource business to our generation subsidiaries as of December 31, 2016. In addition, pursuant to this Proposal, we are considering a sale in the public market of a minority of our shares in our fivenon-nuclear generation subsidiaries, KEPCO KDN and KHNP gradually and in that order, subject to prevailing market conditions and other policy considerations. Accordingly, we are currently taking steps in preparation of a potential sale of a minority of our shares in KOSEP and EWP through public offerings by the end of 2017, but whether and when such sale would occur will be subject to prevailing market conditions and considerations of public policy. In any event, we plan to maintain a controlling stake in each of these subsidiaries.

Amendments to the Electricity Business Act

In March 2017, the Electricity Business Act was amended to the effect that starting in June 2017, future national planning for electricity supply and demand in Korea should consider the environmental and safety impacts of such planning. However,to-date, no specific guidelines have been provided by the Government as to how to implement this provision, and it is therefore difficult to assess in advance what impact such provision will have on our business, results of operations or financial condition.

Carbon Emission Trading System and Related Emission Reduction Targets

In accordance with the Act on Allocation and Trading of Greenhouse Gas Emission Allowances, enacted in March 2013, the Government is currently in the process of implementing a carbon emission trading system under which the Government will allocate the amount of permitted carbon emission to companies by industry and a company whose business emits more carbon than the permitted amount may purchase the right to emit more carbon through the carbon emission trading exchange. This system is expected to be implemented in three stages. During the first phase (2015 to 2017), the Government will set up and make a test run of the trading system to ensure its smooth operation; during this phase, the carbon emission rights will be allocated without charge. During the second phase (2018 to 2020), the system will be applied to a limited scope of industries and companies, where the carbon emission right will be allocated at a relatively low price, but not freely. During the third phase (2021 to 2025), the Government plans to run the system on an expanded scale with aggressive carbon emission reduction targets. As part of the implementation of this trading system, we are obligated to reduce, on a consolidated basis, approximately 200 million tons of carbon emissions, amounting to a 23.7% reduction, per year during the first phase of 2015 to 2017. The amount of required reduction for the second phase of 2018 to 2020 is expected to be determined in June 2017. Adhering to such emission reduction requirement is expected to result in our incurring significant compliance costs.

Regulations of Decrepit Coal-Fired Generation Units

According to a plan announced in July 2016 by the Ministry of Trade, Industry and Energy in relation to coal-fired electricity generation units, 10 of our coal generation units that are 30 years or older will be required to be shut down or convert to another fuel use, 43 of our such units that are less than 30 years old will be subject to retrofitting and overall replacement of environmental facilities, and 20 of our such units currently under construction will be subject to more rigorous emission standards. In addition, the Government indicated that it would not allow any new construction of additional coal-fired generation units after 2019, which means that LNG is likely to be used more in the future as the substitute for coal, and since LNG is a more expensive fuel source than fuel, this regulation is expected to drive up the average cost of generating electricity. Compliance with such measures is expected to result in our incurring significant costs.

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New Energy Industry Fund

In January 2016, the Ministry of Trade, Industry and Energy announced an initiative to promote the new energy industry by creating the New Energy Industry Fund, which is made up of funds sponsored by government-affiliated energy companies. The purpose of these funds is to invest in substantially all frontiers of the new energy industry, including renewable energy, energy storage systems, electric vehicles,small-sized self-sustaining electricity generation grids known as “micro-grids”, among others, as well as invest instart-up companies, ventures, small- tomedium-sized enterprise and project businesses that engage in these businesses but have not previously attracted sufficient capital from the private sector. The total size of these funds was US$1 trillion as of December 31, 2016; these funds were funded from our budget for new energy industry projects, which totaled US$6.4 trillion in 2016 and were expended in research and development, efficiency improvements and educational solar power projects, among others. Our budget for new energy industry projects in 2017 amounts to US$5.6 trillion, of which US$1 trillion has been earmarked for potential additional commitments to the New Energy Industry Fund.

Suspension of the Vesting Contract System

In June 2016, the Government announced that, due to changes in the electricity business environment (including an increase in generation capacity relative to peak usage, reduced fuel costs following a decline in oil prices and greater environmental concerns related to coal-fired electricity generation), any further rollout of the vesting contract system beyond the relatively minor market ofby-productgas-based electricity would be suspended indefinitely and the electricity pricing adjustment mechanism will revert to the adjusted coefficient-based system. The vesting contract system had previously been introduced in May 2014 to provide an alternative mechanism for determining the price and quantity of electricity to be sold and purchased between the purchaser of electricity (namely, us) and the sellers of electricity (namely, our generation subsidiaries and independent power producers). Under the vesting contract system, electricity generators using base load fuels (such as nuclear, coal, hydro andby-product gas) at a particular generation unit were to be required to enter into a contract with the purchaser of electricity (namely, us), which specifies, among other things, the quantity of electricity to be generated and sold at a particular generation unit and the price at which such electricity is sold, subject to certain adjustments. As a result of this suspension, we expect that the existing electricity pricing adjustment mechanism by way of adjusted coefficients will stay for the foreseeable future. See Item 4.B. “Business—Purchase of Electricity—Vesting Contract System.”

Changes to the Computation of Capacity Price

In October 2016, the Cost Evaluation Committee slightly modified the way capacity price (which is paid to generation units primarily to cover their fixed construction and maintenance costs) is determined, including by varying the reference capacity price based on the start year of commercial operation for each generation unit and by introducing the concept of transmission loss and carbon emission amounts in determining the capacity price. For more details, see “—Purchase of Electricity—Cost-based Pool System—Capacity Price.”

Overseas Business

On April 4, 2016, we were selected as the preferred bidder and entered into a purchase and sale agreement with Cogentrix Solar Holdings, LLC on August 26, 2016 to acquire the entire interest in a photovoltaic power plant with an aggregate capacity of 30 megawatts located in Alamosa County, Colorado, through a consortium with the COPA fund, a corporate partnership fund established by local institutional investors including the National Pension Service. The transaction closed on April 12, 2017. we hold a 50.1% equity interest in the consortium. We plan to operate the power plant for 26 years from 2016 to 2042.

On October 10, 2016, a consortium comprised of us, Marubeni Corporation and four local entities, with equity interest in the consortium of 24.5%, 24.5% and 51.0%, respectively, was notified that it has been selected

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by the Republic of South Africa Department of Energy as the preferred bidder for the construction and operation project of a coal-fired power plant in the Republic of South Africa. Once negotiations and financing arrangements are completed, the construction of the coal-fired power plant is expected to commence. The plant is expected to have an aggregate capacity of 630 megawatts, and construction is expected to take 52 months beginning in September 2017. The consortium plans to participate in the operation of the plant for a period of 30 years ending 2052. The total cost of the project is estimated to be around US$2.14 billion, of which our total capital investment is expected to be approximately US$133 million. In connection with the project, we plan to establish a holding company and a project company in the Republic of South Africa.

On October 20, 2016, we entered into an investment agreement with Emirates Nuclear Energy Corporation (“ENEC”) to jointly establish Barakah One PJSC, a special purpose company which will oversee the operation and management of the nuclear power plant currently being constructed in Barakah, United Arab Emirates. Barakah One PJSC will be capitalized with loans in the amount of US$19.6 billion and equity of US$4.7 billion. We have a 18% equity interest in Barakah One PJSC, which will oversee the project. We also have an 18% equity interest in Nawah Energy, a subsidiary of ENEC, which will also be responsible for the operation and maintenance of the Barakah nuclear power plant.

Government Ownership and Our Interactions with the Government

The KEPCO Act requires that the Government own at least 51% of our capital stock. Direct or indirect ownership of more than 50% of our outstanding common stock enables the Government to control the approval of certain corporate matters which require a shareholders’ resolution, including approval of dividends. The rights of the Government and Korea Development Bank as holders of our common stock are exercised by the Ministry of Trade, Industry and Energy in consultation with the Ministry of Strategy and Finance. We are currently not aware of any plans of the Government to cease to own, directly or indirectly, at least 51% of our outstanding common stock.

We play an important role in the implementation of the Government’s national energy policy, which is established in consultation with us, among other parties. As an entity formed to serve public policy goals of the Government, we seek to maintain a fair level of profitability and strengthen our capital base in order to support the growth of our business in the long term.

The Government, through its various policy initiatives for the Korean energy industry as well as direct and indirect supervision of us and our industry, plays an important role in our business and operations. Most importantly, the electricity tariff rates we charge to our customers are regulated by the Government taking into account, among others, our needs to recover the costs of operations, make capital investments and recoup a fair return on capital invested by us, as well as the Government’s overall policy considerations, such as inflation. See Item 4.B. “Business Overview—Sales and Customers—Electricity Rates.”

In addition, pursuant to the Basic Plan determined by the Government, we and our generation subsidiaries have made, and plan to make, substantial expenditures for the construction of generation plants and other facilities to meet demand for electric power. See Item 5.B. “Liquidity and Capital Resources—Capital Requirements.”

Restructuring of the Electric Power Industry in Korea

On January 21, 1999, the Ministry of Trade, Industry and Energy published the Restructuring Plan. The overall objectives of the Restructuring Plan consisted of: (i) introducing competition and thereby increasing efficiency in the Korean electric power industry, (ii) ensuring a long-term, inexpensive and stable electricity supply, and (iii) promoting consumer convenience through the expansion of consumer choice.

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The following provides further details relating to the Restructuring Plan.

Phase I

During Phase I, which served as a preparatory stage for Phase II and lasted from the announcement of the Restructuring Plan in January 1999 until April 2001, we undertook steps to split our generation business units off into one wholly-owned nuclear generation subsidiary (namely, KHNP) and five wholly-ownednon-nuclear generation subsidiaries (namely, KOSEP, KOMIPO, KOWEPO, KOSPO and EWP), each with its own management structure, assets and liabilities. These steps were completed upon approval at our shareholders’ meeting in April 2001.

The Government’s principal objectives in thesplit-off of the generation units into separate subsidiaries were to: (i) introduce competition and thereby increase efficiency in the electricity generation industry in Korea, and (ii) ensure a stable supply of electricity in Korea.

Following the implementation of Phase I, we have substantial monopoly with respect to the transmission and distribution of electricity in Korea.

While our ownership percentage of our generation subsidiaries will depend on further adjustments to the Restructuring Plan to be adopted by the Government, we plan to retain 100% ownership of our transmission and distribution business.

Phase II

At the outset of Phase II in April 2001, the Government introduced a cost-based competitive bidding pool system under which we purchase power from our generation subsidiaries and other independent power producers for transmission and distribution to customers. For a further description of this system, see “—Purchase of Electricity—Cost-based Pool System” below.

Pursuant to the Electricity Business Act amended in December 2000, the Government established the Korea Power Exchange in April 2001. The primary function of the Korea Power Exchange is to deal with the sale of electricity and implement regulations governing the electricity market to allow for electricity distribution through a competitive bidding process. The Government also established the Korea Electricity Commission in April 2001 to regulate the Korean electric power industry and ensure fair competition among industry participants. To facilitate this goal, the Korea Power Exchange established the Electricity Market Rules relating to the operation of the bidding pool system. To amend the Electricity Market Rules, the Korea Power Exchange must have the proposed amendment reviewed by the Korea Electricity Commission and then obtain the approval of the Ministry of Trade, Industry and Energy.

The Korea Electricity Commission’s main functions include implementation of standards and measures necessary for electricity market operation and review of matters relating to licensing participants in the Korean electric power industry. The Korea Electricity Commission also acts as an arbitrator in tariff-related disputes among participants in the Korean electric power industry and investigates illegal or deceptive activities of the industry participants.

Privatization of Generation Subsidiaries

In April 2002, the Ministry of Trade, Industry and Energy released the basic privatization plan for five of our generation subsidiaries other than KHNP. Pursuant to this plan, we commenced the process of selling our equity interest in KOSEP in 2002. According to the original plan, this process was, in principle, to take the form of a sale of management control, potentially supplemented by an initial public offering as a way of broadening the investor base. In November 2003, KOSEP submitted its application to the Korea Exchange for a preliminary screening review, which was approved in December 2003. However, in June 2004, KOSEP made a request to the Korea Exchange to delay its stock listing due to unfavorable stock market conditions at that time.

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In accordance with the Proposal for Adjustment of Functions of Public Institutions (Energy Sector) announced by the Government in June 2016, we are considering a sale in the public market of a minority of our shares in our fivenon-nuclear generation subsidiaries, KEPCO KDN and KHNP gradually and in that order, subject to prevailing market conditions and other policy considerations. Accordingly, we are currently taking steps in preparation of a potential sale of a minority of our shares in KOSEP and EWP through public offerings by the end of 2017, but whether and when such sale would occur will be subject to prevailing market conditions and considerations of public policy. In any event, we plan to maintain a controlling stake in each of these subsidiaries.

Suspension of the Plan to Form and Privatize Distribution Subsidiaries

In 2003, the Government established a Tripartite Commission consisting of representatives of the Government, leading businesses and labor unions in Korea to deliberate on ways to introduce competition in electricity distribution, such as by forming and privatizing new distribution subsidiaries. In 2004, the Tripartite Commission recommended not pursuing such privatization initiatives but instead creating independent business divisions within us to improve operational efficiency through internal competition. Following the adoption of such recommendation by the Government in 2004 and further studies by Korea Development Institute, in 2006 we created nine “strategic business units” (which, together with our other business units, were subsequently restructured into 14 such units in February 2012) that have a greater degree of autonomy with respect to management, financial accounting and performance evaluation while having a common focus on increasing profitability.

Initiatives to Improve the Structure of Electricity Generation

In August 2010, the Ministry of Trade, Industry and Energy announced the Proposal for Improvement in the Structure of the Electric Power Industry in order to resolve uncertainty related to restructuring plans for the electric power industry and maintain competitiveness of the electric power industry. Key initiatives of the proposal included the following: (i) maintain the current structure of having six generation subsidiaries and designate the six generation subsidiaries as market-oriented public enterprises under the Act on the Management of Public Institutions in order to foster competition among the generation subsidiaries and promote efficiency in their operations, (ii) clarify the scope of the business of us and the six generation subsidiaries (namely, that we shall manage the financial structure and governance of the six generation subsidiaries and nuclear power plant and overseas resources development projects, while the six generation subsidiaries will have greater autonomy with respect to construction and management of generation units and procurement of fuel), (iii) create a nuclear power export business unit to systematically enhance our capabilities to win projects involving the construction and operation of nuclear power plants overseas, (iv) further rationalize the electricity tariff by adopting a fuel-cost based tariff system in 2011 and a voltage-based tariff system in a subsequent year, and (v) create separate accounting systems for electricity generation, transmission, distribution and sales with the aim of introducing competition in electricity sales in the intermediate future.

In January 2011, the Ministry of Strategy and Finance created a “joint cooperation unit” consisting of officers and employees selected from the five thermal power generation subsidiaries in order to reduce inefficiencies in areas such as fuel transportation, inventories, materials and equipment and construction, etc. and allow the thermal power generation subsidiaries to continue utilizing the benefits of economy of scale after split off of our generation business units into separate subsidiaries. The purpose of the joint cooperation unit was to give greater autonomy to the generation subsidiaries with regard to power plant construction and management and fuel procurements, and thereby enhance efficiency in operating power plants. The main functions of the joint cooperation unit are as follows: (i) maintain inventories of bituminous coal through volume exchanges and joint purchases, (ii) reduce shipping and demurrage expenses through joint operation and distribution of dedicated vessels, (iii) reduce costs by sharing information on generation material inventories and (iv) sharing human resources among the five thermal power generation subsidiaries for construction projects, among other things.

Furthermore, in January 2011 the six generation subsidiaries were officially designated as “market-oriented public enterprises,” whereupon the President of Korea appoints the president and the statutory auditor of each

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such subsidiary; the selection ofnon-standing directors of each such subsidiary is subject to approval by the minister of the Ministry of Strategy and Finance; the president of each such subsidiary is required to enter into a management contract directly with the minister of the Ministry of Trade, Industry and Energy; and the Public Enterprise Management Evaluation Team (which is established by the Public Agencies Operating Committee) conducts performance evaluation of such subsidiaries. Previously, our president appointed the president and the statutory auditor of each such subsidiary; the selection ofnon-standing directors of each such subsidiary was subject to approval by our president; the president of each such subsidiary entered into a management contract with our president; and our evaluation committee conducted performance evaluation of such subsidiaries. For further details of the impact of the designation of our generation subsidiaries as “market-oriented public enterprises,” see Item 16.G.—Corporate Governance—The Act on the Management of Public Institutions.

Proposal for Adjustment of Functions of Public Institutions (Energy Sector)

In June 2016, the Government announced the Proposal for Adjustment of Functions of Public Institutions (Energy Sector) for the purpose of streamlining the operations of government-affiliated energy companies by discouraging them from engaging in overlapping or similar businesses with each other, reducingnon-core assets and activities and improving management and operational efficiency. The initiatives contemplated in this proposal that would affect us and our generation subsidiaries include the following: (i) the generation companies should take on greater responsibilities in overseas resource exploration and production projects as these involve procurement of fuels necessary for electricity generation while fostering cooperation among each other through closer coordination, (ii) KHNP should take a greater role in export of nuclear technology, and (iii) the current system of retail sale of electricity toend-users should be liberalized to encourage more competition. In accordance therewith, we transferred a substantial portion of our assets and liabilities in our overseas resource business to our generation subsidiaries as of December 31, 2016. In addition, this Proposal contemplates selling a minority stake in our generation subsidiaries and KEPCO KDN as discussed above in “—Privatization of Generation Subsidiaries”.

Purchase of Electricity

Cost-based Pool System

Since April 2001, the purchase and sale of electricity in Korea is required to be made through the Korea Power Exchange, which is a statutorynot-for-profit organization established under the Electricity Business Act with responsibilities for setting the price of electricity, handling the trading and collecting relevant data for the electricity market in Korea. The suppliers of electricity in Korea consist of our six generation subsidiaries, which weresplit-off from us in April 2001, and independent power producers, which numbered 17 (excluding renewable energy producers) as of December 31, 2016. We distribute electricity purchased through the Korea Power Exchange to end users.

Our Relationship with the Korea Power Exchange

The key features of our relationships with the Korea Power Exchange include the following: (i) we and our six generation subsidiaries are member corporations of the Korea Power Exchange and collectively own 100% of its share capital, (ii) three of the 11 members of the board of directors of the Korea Power Exchange are currently our or our subsidiaries’ employees, and (iii) one of our employees is currently a member in three of the key committees of the Korea Power Exchange that are responsible for evaluating the costs of producing electricity, making rules for the Korea Power Exchange and gathering and disclosing information relating to the Korean electricity market.

Notwithstanding the foregoing relationships, however, we do not have control over the Korea Power Exchange or its policies since, among others, (i) the Korea Power Exchange, its personnel, policies, operations and finances are closely supervised and controlled by the Government, namely through the Ministry of Trade,

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Industry and Energy, and are subject to a host of laws and regulations, including, among others, the Electricity Business Act and the Act on the Management of Public Institutions, as well as the Articles of Incorporation of the Korea Power Exchange, (ii) we are entitled to elect no more thanone-third of the Korea Power Exchange directors and our representatives represent only a minority of its board of directors and committees (with the other members being comprised of representatives of the Ministry of Trade, Industry and Energy, employees of the Korea Power Exchange, businesspersons and/or scholars), and (iii) the role of our representatives in the policy making process for the Korea Power Exchange is primarily advisory based on their technical expertise derived from their employment at us or our generation subsidiaries. Consistent with this view, the Finance Supervisory Service issued a ruling in 2005 that stated that we are not deemed to have significant influence or control over the decision-making process of the Korea Power Exchange relating to its business or financial affairs.

Pricing Factors

The price of electricity in the Korean electricity market is determined principally based on the cost of generating electricity using a system known as the “cost-based pool” system. Under the cost-based pool system, the price of electricity has two principal components, namely the marginal price (representing in principle the variable cost of generating electricity) and the capacity price (representing in principle the fixed cost of generating electricity).

Under the merit order system, the electricity purchase allocation, the system marginal price (as described below) and the final allocation adjustment are automatically determined based on an objective formula. The variable cost (including the adjusted coefficient as described below) and the capacity price are determined in advance of trading by the Cost Evaluation Committee, which is comprised of representatives from the Ministry of Trade, Industry and Energy, the Korea Power Exchange, us, generation companies, scholars and researchers. Accordingly, a supplier of electricity cannot exercise control over the merit order system or its operations to such supplier’s strategic advantage.

Marginal Price

The primary purpose of the marginal price is to compensate the generation companies for fuel costs, which represents the principal component of the variable costs of generating electricity. We currently refer such marginal price as the “system marginal price.”

The system marginal price represents, in effect, the marginal price of electricity at a given hour at which the projected demand for electricity and the projected supply of electricity for such hour intersect, as determined by the merit order system, which is a system used by the Korea Power Exchange to allocate which generation units will supply electricity for which hour and at what price. To elaborate, the projected demand for electricity for a given hour is determined by the Korea Power Exchange based on a forecast made one day prior to trading, and such forecast takes into account, among others, historical statistics relating to demand for electricity nationwide by day and by hour, seasonality andon-peak-hour versusoff-peak hour demand analysis. The projected supply of electricity at a given hour is determined as the aggregate of the available capacity of all generation units that have submitted bids to supply electricity for such hour. These bids are submitted to the Korea Power Exchange one day prior to trading.

Under the merit order system, the generation unit with the lowest variable cost of producing electricity among all the generation units that have submitted a bid for a given hour is first awarded a purchase order for electricity up to the available capacity of such unit as indicated in its bid. The generation unit with the next lowest variable cost is then awarded a purchase order up to its available capacity in its bid, and so forth, until the projected demand for electricity for such hour is met. We refer to the variable cost of the generation unit that is the last to receive the purchase order for such hour as the system marginal price, which also represents the highest price at which electricity can be supplied at a given hour based on the demand and supply for such hour.

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Generation units whose variable costs exceed the system marginal price for a given hour do not receive purchase orders to supply electricity for such hour. The variable cost of each generation unit is determined by the Cost Evaluation Committee on a monthly basis and reflected in the following month based on the fuel costs two months prior to such determination. The purpose of the merit order system is to encourage generation units to reduce its electricity generation costs by making its generation process more efficient, sourcing fuels from most cost-effective sources or adopting other cost savings programs.

The final allocation of electricity supply is further adjusted on the basis of other factors, including the proximity of a generation unit to the geographical area to which power is being supplied, network and fuel constraints and the amount of power loss. This adjustment mechanism is designed to adjust for transmission losses in order to improve overall cost-efficiency in the transmission of electricity toend-users.

The price of electricity at which our generation subsidiaries sell electricity to us is determined using the following formula:

Variable cost + [System marginal price – Variable cost] * Adjusted coefficient

An adjusted coefficient applies in principle to all generation units operated by our generation subsidiaries and the coal-fired generation units operated by independent power producers. The adjusted coefficient applicable to the generation units operated by our generation subsidiaries is determined based on considerations of, among others, electricity tariff rates, the differential generation costs for different fuel types and the relative fair returns on investment in respect of us compared to our generation subsidiaries. The purpose of the adjusted coefficient here is to prevent electricity trading from resulting in undue imbalances as to the relative financial results among generation subsidiaries as well as between us (as the purchaser of electricity) and our generation subsidiaries (as sellers of electricity). Such imbalances may arise from excessive profit taking by base load generators (on account of their inherently cheaper fuel cost structure compared tonon-base load generators) as well as from fluctuations in fuel prices (it being the case that during times of rapid and substantial rises in fuel costs which are not offset by corresponding rises in electricity tariff rates charged by us toend-users, on anon-consolidated basis our profitability will decline compared to that our generation subsidiaries since our generation subsidiaries are entitled to sell electricity to us at cost plus a guaranteed margin). In comparison, the adjusted coefficient applicable to the coal-fired generation units operated by independent power producers is determined to enable such independent power producers to recover the total costs of building and operating such units.

The adjusted coefficient applicable to our generation subsidiaries is currently set at the highest level for the marginal price of electricity generated using nuclear fuel, followed by coal and (depending the prevailing relative market prices) oil and/or LNG. The differentiated adjusted coefficients reflect the Government’s prevailing energy policy objectives and have the effect of setting priorities in the fuel types to be used in electricity generation.

The adjusted coefficient is determined by the Cost Evaluation Committee in principle on an annual basis, although in exceptional cases driven by external or structural factors such as rapid and substantial changes in fuel costs, adjustments to electricity tariff rates or changes in the electricity pricing structure, the adjusted coefficient may be adjusted on a quarterly basis.

Previously, it was contemplated that the vesting contract system would gradually replace the application of the adjusted coefficient. However, since the implementation of the vesting contract system has been suspended indefinitely, it is unlikely to impact the application of the adjusted coefficient in the foreseeable future.

Capacity Price

In addition to payment in respect of the variable cost of generating electricity, generation units receive payment in the form of capacity price, the purpose of which is to compensate them for the fixed costs of constructing generation facilities, provide incentives for construction of new generation units and maintain reliability of the nationwide electricity transmission network.

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The capacity price is determined by the Cost Evaluation Committee as a function of the following factors: (i) reference capacity price, (ii) reserve capacity factor,(iii) time-of-the-day capacity coefficient and (iv) since October 2016, fuel switching factor. The reference capacity price and thetime-of-the-day capacity coefficient are determined annually before the end of December for the subsequent12-months period. The reserve capacity factor and the fuel switching factor are determined annually before the end of June for the subsequent12-months period.

The reference capacity price refers to the Won amount per kilowatt-hour payable annually for annualized available capacity indicated in the bids submitted the day before trading (provided that such capacity is actually available on the relevant day of trading), and is determined based on the construction costs and maintenance costs of a standard generation unit and related transmission access facilities, and a base rate for loading electricity. Prior to October 2016, the same reference capacity price applied uniformly to all generation units. Since October 2016, the reference capacity price applies differentially to each generation unit depending on the start year of its commercial operation. Accordingly, the reference capacity price currently ranges from Won 9.15 to 10.07 per kilowatt hour.

The reserve capacity factor relates to the requirement to maintain a standard capacity reserve margin in the range of 15% in order to prevent excessive capacitybuild-up as well as induce optimal capacity investment at the regional level. The capacity reserve margin is the ratio of peak demand to the total available capacity. Under this system, generation units in a region where available capacity is insufficient to meet demand for electricity as evidenced by failing to meet the standard capacity reserve margin receive increased capacity price. Conversely, generation units in a region where available capacity exceeds demand for electricity as evidenced by exceeding the standard capacity reserve margin receive reduced capacity price. Since October 2016, the reserve capacity factor also factors in the transmission loss per generation unit in order to favor transmission of electricity from a nearby generation unit.

Thetime-of-the-day capacity coefficient allows hourly and seasonal adjustments in order to incentivize our generation subsidiaries to operate their generation facilities at full capacity during periods of highest demand. For example, the capacity price paid differs depending on whether the relevant hour is an“on-peak” hour, a“mid-peak” hour or an“off-peak” hour (the capacity price being highest for theon-peak hours and lowest for theoff-peak hours) and the capacity price paid is highest during the months of January, July and August when electricity usage is highest due to weather conditions.

The fuel switching factor, which was introduced in October 2016 to promote environmental sensitivities to climate change, seeks to encourage reduced carbon emission by penalizing generation units (mostly coal-fired units) for excessive carbon emission.

Other than subject to the aforementioned variations, the same capacity pricing mechanism applies to all generation units regardless of fuel types used.

Vesting Contract System

In May 2014, the Electricity Business Act was amended to introduce a “vesting contract” system in determining the price and quantity of electricity to be sold and purchased between the purchaser of electricity (namely, us) and the sellers of electricity (namely, our generation subsidiaries and independent power producers). Under the vesting contract system, electricity generators using base load fuels (such as nuclear, coal, hydro andby-product gas) at a particular generation unit were to be required to enter into a contract with the purchaser of electricity (namely, us), which specifies, among other things, the quantity of electricity to be generated and sold at a particular generation unit and the price at which such electricity is sold, subject to certain adjustments.

The vesting contract system was introduced principally to prevent excessive profit-taking bylow-cost producers of electricity using base load fuels (such as nuclear, coal, hydro andby-product gas) by replacing the

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adjusted coefficient as the basis for determining the guaranteed return to generation companies, as well as to enhance the stability of electricity supply by requiring long-term contractual arrangements for the purchase and sale of electricity and promote cost savings, productivity enhancements and operational efficiency by providing incentives and penalties depending on the degree to which the generation companies could supply electricity at costs below the contracted electricity prices.

In order to minimize undue shock to the electricity trading market in Korea, the vesting contract system was to be implemented in phases starting withby-productgas-based electricity in 2015, which accounted for 1.8% of electricity purchased by us during such year. The rollout of the vesting contract system was further studied by a task force consisting of representatives from the Government, the Korea Power Exchange and generation companies.

Following such study, the Government announced in June 2016 that, due to changes in the electricity business environment (including an increase in generation capacity relative to peak usage, reduced fuel costs following a decline in oil prices and greater environmental concerns related to coal-fired electricity generation), it will indefinitely suspend any further rollout of the vesting contract system beyondby-productgas-based electricity, and revert to the adjusted coefficient-based electricity pricing adjustment mechanism.

Power Trading Results

The results of power trading, as effected through the Korea Power Exchange, for our generation subsidiaries and independent power producers in 2016 are as follows:

	Items	Volume (Gigawatt hours)		Percentage of Total Volume (%)		Sales to KEPCO (in billions of Won)		Percentage of Total Sales (%)		Unit Price (Won/kWh)
Generation Companies	KHNP		158,668		31.2		10,949		27.0		69.00
	KOSEP		67,721		13.3		4,847		12.0		71.58
	KOMIPO		42,896		8.4		3,621		8.9		84.42
	KOWEPO		48,380		9.5		4,141		10.2		85.60
	KOSPO		47,969		9.4		4,155		10.3		86.63
	EWP		49,260		9.7		4,169		10.3		84.62
	Others(1)		93,985		18.5		8,632		21.3		91.84
	Total		508,879		100.0		40,514		100.0		79.61
Energy Sources	Nuclear		154,175		30.3		10,489		25.9		68.03
	Bituminous coal		199,505		39.2		14,732		36.4		73.84
	Anthracite coal		7,071		1.4		626		1.5		88.57
	Oil		13,262		2.6		1,462		3.6		110.27
	LNG		989		0.2		113		0.3		114.54
	Combined-cycle		110,721		21.8		10,989		27.0		99.25
	Hydro		2,140		0.4		186		0.5		87.01
	Pumped-storage		3,617		0.7		385		1.0		106.35
	Others		17,399		3.4		1,532		3.8		88.05
	Total		508,879		100.0		40,514		100.0		79.61
Load	Base load		352,313		69.2		25,213		62.2		71.56
	Non-base load		156,566		30.8		15,301		37.8		97.72
	Total		508,897		100.0		40,514		100.0		79.61

Note:

(1) Others represent independent power producers that trade electricity through the cost-based pool system of power trading (excluding independent power producers that supply electricity under power purchase agreements with us).

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Power Purchased from Independent Power Producers Under Power Purchase Agreements

In 2016, we purchased an aggregate of 9,719 gigawatt hours of electricity generated by independent power producers under existing power purchase agreements. These independent power producers had an aggregate generation capacity of 5,481 megawatts as of December 31, 2016.

Power Generation

As of December 31, 2016, we and our generation subsidiaries had a total of 655 generation units, including nuclear, thermal, hydroelectric and internal combustion units, representing total installed generation capacity of 79,217 megawatts. Our thermal units produce electricity using steam turbine generators fired by coal, oil and LNG. Our internal combustion units use oil or diesel-fired gas turbines and our combined-cycle units are primarilyLNG-fired. We also purchase power from several generation plants not owned by our generation subsidiaries.

The table below sets forth as of and for the year ended December 31, 2016 the number of units, installed capacity and the average capacity factor for each type of generating facilities owned by our generation subsidiaries.

	Number of Units		Installed Capacity(1)		Average  Capacity Factor(2)
			(Megawatts)		(Percent)
Nuclear		25		23,116		79.7
Thermal:
Coal(3)		58		30,546		86.5
Oil		11		2,950		50.4
LNG		1		250		16.7
Total thermal		70		33,746		82.5
Internal combustion		207		329		19.8
Combined-cycle(4)		93		16,018		33.0
Integrated gasification combined cycle(5)		2		346		11.9
Hydro		76		5,350		10.3
Wind		48		138		15.4
Solar		88		90		12.9
Fuel cell		16		39		67.5
Biogas		2		35		58.4
Others(6)		28		10		44.0
Total		655		79,217		65.5

Notes:

(1) Installed capacity represents the level of output that may be sustained continuously without significant risk of damage to plant and equipment.

(2) Average capacity factor represents the total number of kilowatt hours of electricity generated in the indicated period divided by the total number of kilowatt hours that would have been generated if the generation units were continuously operated at installed capacity, expressed as a percentage.

(3) As for coal generation units for which construction was completed in the second half of 2016, the average capacity factors for these units reflect the period during which such units were in operation following the completion of construction. Such units (together with their respective installed capacities and construction completion dates are as follows: Dangjin #9 (1,020 megawatts, completed in July 2016), Dangjin # 10 (1,020 megawatts, completed in September 2016), Taean #9 (1,050 megawatts, completed in October 2016), Yeosu #1 (350 megawatts, completed in August 2016) and Samcheok Green #1 (1,022 megawatts, completed in December 2016).

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(4) Involves generation through coal and oil.

(5) Involves generation through coal and gasified coal.

(6) Includeswaste-to-energy.

The expected useful life of a unit, assuming no substantial renovation, is approximately as follows: nuclear, over 40 years; thermal, over 30 years; internal combustion, over 25 years; and hydroelectric, over 55 years. Substantial renovation can extend the useful life of thermal units by up to 20 years.

We seek to achieve efficient use of fuels and diversification of generation capacity by fuel type. In the past, we relied principally uponoil-fired thermal generation units for electricity generation. Since the oil shock in 1974, however, Korea’s power development plans have emphasized the construction of nuclear generation units. While nuclear units are more expensive to construct than thermal generation units of comparable capacity, nuclear fuel is less expensive than fossil fuels in terms of electricity output per unit cost. However, efficient operation of nuclear units requires that such plants be run continuously at relatively constant energy output levels. As it is impractical to store large quantities of electrical energy, we seek to maintain nuclear power production capacity at approximately the level at which demand for electricity is continuously stable. During those times when actual demand exceeds the usual level of electricity supply from nuclear power, we rely on units fired by fossil fuels and hydroelectric units, which can be started and shut down more quickly and efficiently than nuclear units, to meet the excess demand. Bituminous coal is currently the least expensive thermal fuel per kilowatt-hour of electricity produced, and therefore we seek to maximize the use of bituminous coal for generation needs in excess of the stable demand level, except for meeting short-term surges in demand which require rapidstart-up and shutdown. Thermal units fired by LNG, hydroelectric units and internal combustion units are the most efficient types of units for rapidstart-ups and shutdowns, and therefore we use such units principally to meet short-term surges in demand. Anthracite coal is a less efficient fuel source than bituminous coal in terms of electricity output per unit cost.

Our generation subsidiaries have constructed and operated thermal and internal combustion units in order to help meet power demand. Subject to market conditions, our generation subsidiaries plan to continue to add additional thermal and internal combustion units. These units generally take less time to complete construction than nuclear units.

The high average age of ouroil-fired thermal units is attributable to our reliance onoil-fired thermal units as the primary means of electricity generation untilmid-1970s. Since then, we have diversified our fuel sources and constructed relatively fewoil-fired thermal units compared to units of other fuel types.

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The table below sets forth, for the periods indicated, the amount of electricity generated by facilities linked to our grid system and the amount of power used or lost in connection with transmission and distribution.

	2012		2013		2014		2015			2016		% of 2016 Gross Generation(1)
	(in gigawatt hours, except percentages)
Electricity generated by us and our generation subsidiaries:
Nuclear		150,327		138,784		156,407		164,762			161,995		30.0
Coal		199,330		201,119		203,765		207,533			207,912		38.4
Oil		13,553		13,941		6,838		8,822			13,055		2.4
LNG		3,453		3,526		568		222			369		0.1
Internal combustion		752		741		656		633			573		0.1
Combined-cycle		75,751		84,561		68,134		45,923			46,477		8.6
Hydro		5,140		5,679		5,976		4,424	��		4,835		0.9
Wind		127		155		148		181			186		0.1
Solar and fuel cells		83		251		422		420			908		0.1
Total generation by us and our generation subsidiaries		448,516		448,757		442,914		432,920			436,310		80.7
Electricity generated by IPPs:
Thermal		48,043		55,923		63,088		72,316			83,789		15.5
Hydro and other renewable		13,015		12,468		15,968		17,106			20,342		3.8
Total generation by IPPs		61,058		68,391		79,056		89,422			104,131		19.3
Gross generation		509,574		517,148		521,970		522,343			540,441		100.0
Auxiliary use(2)		20,154		20,463		20,610		21,293			21,605		4.0
Pumped-storage(3)		4,789		5,408		6,644		4,824			4,716		0.9
Total net generation(4)		484,631		491,277		494,716		496,226			514,120		95.1
Transmission and distribution losses(5)		17,292		18,019		18,270		18,063			18,475		3.6

IPPs = Independent power producers

Notes:

(1) Unless otherwise indicated, percentages are based on gross generation.

(2) Auxiliary use represents electricity consumed by generation units in the course of generation.

(3) Pumped storage represents electricity consumed during low demand periods in order to store water which is utilized to generate hydroelectric power during peak demand periods.

(4) Total net generation represents gross generation minus auxiliary and pumped-storage use.

(5) Transmission and distribution losses represents total transmission and distribution losses divided by total net generation.

The table below sets forth our total capacity at the end of, and peak and average loads during, the indicated periods.

	2012		2013		2014		2015		2016
	(Megawatts)
Total capacity		81,806		82,296		93,216		94,102		100,180
Peak load		75,987		76,522		80,154		78,790		85,183
Average load		58,012		59,035		59,586		60,284		61,694

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Korea Hydro & Nuclear Power Co., Ltd.

We commenced nuclear power generation activities in 1978 when our first nuclear generation unit, Kori #1, began commercial operation. On April 2, 2001, all of our nuclear and hydroelectric power generation assets and liabilities were transferred to KHNP.

KHNP owns and operates 25 nuclear generation units at four power plant complexes in Korea, located in Kori, Wolsong, Yonggwang (Hanbit) and Ulchin (Hanul), 51 hydroelectric generation units including 16 pumped storage hydro generation units as well as five solar generation units and one wind generation unit as of December 31, 2016.

The table below sets forth the number of units and installed capacity as of December 31, 2016 and the average capacity factor by types of generation units in 2016.

	Number of Units		Installed  Capacity(1)		Average  Capacity Factor(2)
			(Megawatts)		(Percent)
Nuclear		25		23,116		79.7
Hydroelectric		51		5,306		9.58
Solar		5		16		13.5
Wind		1		1		6.7
Total		82		28,439

Notes:

(1) Installed capacity represents the level of output that may be sustained continuously without significant risk of damage to plant and equipment.

(2) Average capacity factor represents the total number of kilowatt hours of electricity generated in the indicated period divided by the total number of kilowatt hours that would have been generated if the generation units were continuously operated at installed capacity, expressed as a percentage.

KHNP commenced commercial operation of Shin-Kori #3, with a 1,400 megawatt capacity, in December 2016. KHNP is currently building five additional nuclear generation units, three at the Shin-Kori and two at Shin-Hanul sites, each with a 1,400 megawatt capacity. KHNP expects to complete these units between 2017 and 2022.In addition, KHNP plans to build four additional nuclear units between 2017 and 2027, two at the Shin-Hanul sites, each with a 1,400 megawatt capacity, and two at the Chunji site, each with a 1,500 megawatt capacity. Under the Seventh Basic Plan, KHNP plans to build two additional nuclear units between 2028 and 2029, each with a 1,500 megawatt capacity, at sites which have yet to be determined. We plan to begin the decommissioning process of Kori #1 in June 2017.

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Nuclear

The table below sets forth certain information with respect to the nuclear generation units of KHNP as of December 31, 2016.

Unit	Reactor Type(1)		Reactor Design(2)	Turbine and Generation(3)	Commencement of Operations		Installed Capacity
	(Megawatts)
Kori-1		PWR	W	GEC, Hitachi, D		1978		587
Kori-2		PWR	W	GEC		1983		650
Kori-3		PWR	W	GEC, Hitachi		1985		950
Kori-4		PWR	W	GEC, Hitachi		1986		950
Shin-Kori-1		PWR	D, KEPCO E&C, W	D, GE		2011		1,000
Shin-Kori-2		PWR	D, KEPCO E&C, W	D, GE		2012		1,000
Shin-Kori-3		PWR	D, KEPCO E&C, W	D, GE		2016		1,400
Wolsong-1		PHWR	AECL	P		1983		679
Wolsong-2		PHWR	AECL, H, K	H, GE		1997		700
Wolsong-3		PHWR	AECL, H	H, GE		1998		700
Wolsong-4		PHWR	AECL, H	H, GE		1999		700
Shin-Wolsong-1		PWR	D, KEPCO E&C, W	D, GE		2012		1,000
Shin-Wolsong-2		PWR	D, KEPCO E&C, W	D, GE		2015		1,000
Hanbit-1		PWR	W	W, D		1986		950
Hanbit-2		PWR	W	W, D		1987		950
Hanbit-3		PWR	H, CE, K	H, GE		1995		1,000
Hanbit-4		PWR	H, CE, K	H, GE		1996		1,000
Hanbit-5		PWR	D, CE, W, KEPCO E&C	D, GE		2002		1,000
Hanbit-6		PWR	D, CE, W, KEPCO E&C	D, GE		2002		1,000
Hanul-1		PWR	F	A		1988		950
Hanul-2		PWR	F	A		1989		950
Hanul-3		PWR	H, CE, K	H, GE		1998		1,000
Hanul-4		PWR	H, CE, K	H, GE		1999		1,000
Hanul-5		PWR	D, KEPCO E&C, W	D, GE		2004		1,000
Hanul-6		PWR	D, KEPCO E&C, W	D, GE		2005		1,000
Total nuclear								23,116

Notes:

(1) “PWR” means pressurized light water reactor; “PHWR” means pressurized heavy water reactor.

(2) “W” means Westinghouse Electric Company (U.S.A.); “AECL” means Atomic Energy Canada Limited (Canada); “F” means Framatome (France); “H” means Hanjung; “CE” means Combustion Engineering (U.S.A.); “D” means Doosan Heavy Industries; “K” means Korea Atomic Energy Research Institute; “KEPCO E&C” means KEPCO Engineering & Construction.

(3) “GEC” means General Electric Company (U.K.); “P” means Parsons (Canada and U.K.); “W” means Westinghouse Electric Company (U.S.A.); “A” means Alstom (France); “H” means Hanjung; “GE” means General Electric (U.S.A.); “D” means Doosan Heavy Industries; “Hitachi” means Hitachi Ltd. (Japan).

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The table below sets forth the average capacity factor and average fuel cost per kilowatt for 2016 with respect to each nuclear generation unit of KHNP.

Unit	Average Capacity Factor		Average Fuel Cost Per  kWh
	(Percent)		(Won)
Kori-1		89.5		8.5
Kori-2		66.9		8.9
Kori-3		100.2		7.0
Kori-4		87.8		7.5
Shin-Kori-1		99.6		5.8
Shin-Kori-2		75.9		5.8
Shin-Kori-3		102.4		6.2
Wolsong-1		53.3		10.8
Wolsong-2		74.4		9.8
Wolsong-3		70.9		10.9
Wolsong-4		75.8		9.8
Shin-Wolsong-1		84.7		5.7
Shin-Wolsong-2		82.9		6.7
Hanbit-1		73.4		8.3
Hanbit-2		34.1		6.7
Hanbit-3		79.8		7.3
Hanbit-4		99.6		6.9
Hanbit-5		99.2		6.0
Hanbit-6		86.8		6.6
Hanul-1		81.2		6.9
Hanul-2		86.6		6.9
Hanul-3		52.7		7.8
Hanul-4		60.7		5.8
Hanul-5		78.4		6.7
Hanul-6		100.2		6.4
Total nuclear		79.7		7.2

Under extended-cycle operations, nuclear units can be run continuously for periods longer than the conventional12-month period between scheduled shutdowns for refueling and maintenance. Since 1987, we have adopted the mode of extended-cycle operations for all of our pressurized light water reactor units and plan to use it for our newly constructed units. The duration of shutdown for fuel replacement and maintenance was 75.9 days per unit in 2016. In addition, KHNP’s nuclear units experienced an average of 0.2 unplanned shutdowns per unit in 2016. In the ordinary course of operations, KHNP’s nuclear units routinely experience damage and wear and tear, which are repaired during routine shutdown periods or during unplanned temporary suspensions of operations. No significant damage has occurred in any of KHNP’s nuclear reactors, and no significant nuclear exposure or release incidents have occurred at any of KHNP’s nuclear facilities since the first nuclear plant commenced operation in 1978.

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Hydroelectric

The table below sets forth certain information relating to KHNP’s pumped-storage and hydroelectric business units, including the installed capacity as of December 31, 2016 and the average capacity factor in 2016.

Location of Unit	Number of Units		Classification	Year Built		Installed Capacity		Average Capacity Factor
						(Megawatts)		(%)
Hwacheon		4	Dam waterway		1944		108.0		13.7
Chuncheon		2	Dam		1965		62.3		15.8
Euiam		2	Dam		1967		48.0		23.5
Cheongpyung		4	Dam		1943		140.1		16.1
Paldang		4	Dam		1973		120.0		25.0
Seomjingang		3	Basin deviation		1945		34.8		17.7
Boseonggang		2	Basin deviation		1937		4.5		60.8
Kwoesan		2	Dam		1957		2.6		31.7
Anheung		3	Dam waterway		1978		0.4		28.2
Kangreung		2	Basin deviation		1991		82.0		0
Topyeong		1	Dam		2011		0.04		22.2
Muju		1	Dam		2003		0.4		28.0
Sancheong		2	Dam		2001		1.0		40.5
Yangyang		2	Dam		2005		1.4		16.7
Yecheon		1	Dam		2011		0.9		11.8
Cheongpeoung		2	Pumped Storage		1980		400.0		4.3
Samrangjin		2	Pumped Storage		1985		600.0		7.6
Muju		2	Pumped Storage		1995		600.0		7.3
Sancheong		2	Pumped Storage		2001		700.0		11.1
Yangyang		4	Pumped Storage		2006		1,000.0		7.6
Cheongsong		2	Pumped Storage		2006		600.0		11.4
Yecheon		2	Pumped Storage		2011		800.0		10.3
Total		51					5,306		9.6

Solar/Wind

The table below sets forth certain information, including the installed capacity as of December 31, 2016 and the average capacity factor in 2016, of the solar and wind power units of KHNP.

Location of Unit		Classification	Year Built		Installed Capacity		Average  Capacity Factor
	��				(Megawatts)		(Percent)
Yonggwang		Solar		2008		13.9		13.3
Yecheon		Solar		2012		2.0		15.0
Kori		Wind		2008		0.8		6.7
Total						16.7

Korea Water Resources Corporation, which is a Government-owned entity, assumes full control of multi-purpose dams, while KHNP maintains the dams used for power generation. Existing hydroelectric power units have exploited most of the water resources in Korea available for commercially viable hydroelectric power generation. Consequently, we expect that no new major hydroelectric power plants will be built in the foreseeable future. Due to the ease of itsstart-up and shut-down mechanism, hydroelectric power generation is reserved for peak demand periods.

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Korea South-East Power Co., Ltd.

The table below sets forth, by fuel type, the weighted average age and installed capacity as of December 31, 2016 and the average capacity factor and average fuel cost per kilowatt in 2016 based upon the net amount of electricity generated, of KOSEP.

	Weighted Average Age  of Units		Installed Capacity		Average Capacity Factor		Average Fuel Cost per kWh
	(Years)		(Megawatts)		(Percent)		(Won)
Bituminous:
Samchunpo #1, 2, 3, 4, 5, 6		25.7		3,240		87.4		39.3
Yong Hung #1, 2, 3, 4, 5, 6		8.2		5,080		86.5		36.2
Yosu # 2		3.5		668		82.8		46.9
Anthracite:
Yongdong #1, 2		23.4		325		73.6		50.8
Combined cycle and internal Combustion:
Bundang gas turbine #1,2,3,4,5,6,7,8; steam turbine #1, 2		23.4		922		27.0		115.9
Hydro, Solar and other renewable energy		—		95		—		—
Total		15.2		10,331		80.3		40.7

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Korea Midland Power Co., Ltd.

The table below sets forth, by fuel type, the weighted average age and installed capacity as of December 31, 2016 and the average capacity factor and average fuel cost per kilowatt in 2016 based upon the net amount of electricity generated, of KOMIPO.

	Weighted Average Age of Units		Installed Capacity		Average Capacity Factor		Average Fuel Cost per  kWh
	(Years)		(Megawatts)		(Percent)		(Won)
Bituminous:
Boryeong #1, 2, 3, 4, 5, 6, 7, 8		21.9		4,000		87.6		36.5
Anthracite:
Seocheon #1, 2		33.5		400		77.8		54.9
Oil-fired:
Jeju #2, 3		16.4		150		59.9		149.5
LNG-fired:
Seoul #4, 5		47.8		250		16.7		154.0
Combined-cycle and internal combustion:
Boryeong gas turbine #1, 2, 3, 4, 5, 6 ; steam turbine #1, 2, 3,		17.8		1,350		8.1		90.5
Incheon gas turbine #1, 2, 3, 4,5,6 ; steam turbine #1, 2,3		11.8		1,462.7		44.2		85.0
Sejong gas turbine #1,2 ; steam turbine #1		3.1		530.4		59.9		79.9
Jeju Gas Turbine #3		39.1		55		0.2		595.6
Jeju Internal Combustion Engine #1,2		9.6		80		45.9		82.0
Wind:
Yangyang #1, 2		10.6		3.0		18.4		-12.5
Sejong Maebongsan Wind				6.8				—
Jeju Sangmyung Wind				21				—
Combined heat and power:
Wonju#1		1.7		10		45.1		106.1
Hydroelectric:
Boryeong		7.9		12.5		29.2		—
Photovoltaic (“PV”) power and fuel cell generation:
Boryeong (PV) site		8.7		3.5		14.0		—
Seocheon (PV) site		8.1		1.2		14.2		—
Jeju (PV) site		5.5		2.3		12.2		—
Seoul (PV) site		5.4		1.3		15.1		—
Yeosu (PV) site		4.9		2.2		14.7		—
Incheon (PV) site		5.1		0.3		14.1		—
Boryeong (fuel cell) site		8.4		0.3		69.5		170.3
Total		18.2		8,343.0		60.9		51.0

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Korea Western Power Co., Ltd.

The table below sets forth, by fuel type, the weighted average age and installed capacity as of December 31, 2016 and the average capacity factor and average fuel cost per kilowatt in 2016 based upon the net amount of electricity generated, of KOWEPO.

	Weighted Average Age of Units		Installed Capacity		Average Capacity Factor		Average Fuel Cost per kWh
	(Years)		(Megawatts)		(Percent)		(Won)
Bituminous:
Taean #1, 2, 3, 4, 5, 6, 7, 8, 9		13.0		5,050		86.5		39.3
Oil-fired:
Pyeongtaek #1, 2, 3, 4		35.1		1,400		42.2		74.9
Combined cycle:
Pyeongtaek #1, 2		10.2		1,348.5		42.9		76.4
Gunsan		6.6		718.4		42.8		86.4
West Incheon		24.5		1,800		25.3		83.4
Hydroelectric:
Taean		9.3		2.2		18.6		—
Solar:
Taean		11.4		0.1		11.9		—
Taean 2		4.9		0.6		20.7		—
Taean 3		0.5		1.8		12.9		—
Gunsan		6.5		0.3		13.7		—
Samryangjin		9.1		3.0		13.0		—
Sejong City		4.5		5.0		14.4		—
Gyeonggi-do		3.7		2.5		14.3		—
Yeongam		3.8		13.3		15.0		—
Pyeongtaek		2.1		0.4		12.1		—
Fuel Cell:
West Incheon 1		2.3		11.2		77.4		—
West Incheon 2		0.6		5		74.3		116.5	(1)
Wind Power:
Hwasun		1.1		16		18.0		—
Integrated gasification combined cycle:
Taean		0.4		346.3		22.2		48.3
Total		16.6		10,724.6		58.2		53.3

Note:

(1) Represents average fuel cost per kWh for West Incheon 1 and West Incheon 2 on an aggregated basis.

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Korea Southern Power Co., Ltd.

The table below sets forth, by fuel type, the weighted average age and installed capacity as of December 31, 2016 and the average capacity factor and average fuel cost per kilowatt in 2016 based upon the net amount of electricity generated, of KOSPO.

	Weighted Average Age of Units		Installed Capacity		Average Capacity Factor		Average Fuel Cost per kWh
	(Years)		(Megawatts)		(Percent)		(Won)
Bituminous:
Hadong #1, 2, 3, 4, 5, 6, 7, 8		15.3		4,000		102.2		39.8
Samcheok#1		0.04		1,022		90.2		44.0
Oil-fired:
Nam Jeju #3, 4		10.0		200		83.4		140.8
Combined cycle:
Shin Incheon #1, 2, 3, 4		20.2		1,800		34.5		85.0
Busan #1, 2, 3, 4		13.2		1,800		49.3		81.2
Yeongwol #1		6.2		848		11.4		86.3
Hallim		20.5		105		6.9		162.3
Andong#1		2.8		362		79.7		76.5
Wind power:
Hankyung		10.2		21		25.7		—
Seongsan		7.2		20		26.6		—
Solar		6.2		6		12.6		—
Total		12.9		10,184		66.7		55.8

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Korea East-West Power Co., Ltd.

The table below sets forth, by fuel type, the weighted average age and installed capacity as of December 31, 2016 and the average capacity factor and average fuel cost per kilowatt in 2016 based upon the net amount of electricity generated, of EWP.

	Weighted Average Age of Units		Installed Capacity		Average Capacity Factor		Average Fuel Cost per  kWh
	(Years)		(Megawatts)		(Percent)		(Won)
Bituminous:
Dangjin #1, 2, 3, 4, 5, 6, 7, 8, 9, 10		9.3		5,860		72.2		59.1
Honam #1, 2		43.7		500		75.4		76.3
Anthracite:
Donghae #1, 2		17.8		400		83.2		95.0
Oil-fired:
Ulsan #4, 5, 6		36.5		1,200		54.4		131.8
Combined cycle:
Ulsan gas turbine #1, 2, 3, 4, 5, 6; steam turbine #1, 2, 3		13.1		2,072		33.5		140.4
Ilsan gas turbine #1, 2, 3, 4, 5, 6; steam turbine #1, 2		22.9		900		15.3		247.5
Mini hydro:
Dangjin		5.3		8.1		34.2		183.8
Photovoltaic: Dangjin		5.6		1.0		14.0		—
Ulsan		5.1		0.6		12.5		—
Kwangyang		4.3		2.3		10.9		—
Dangjin Storage Facility		3.3		14.8		14.4		—
Dangjin Waste Treatment Facility		4.3		1.3		11.7		—
Dangjin Intake Channel Facility		3.5		0.9		13.2		—
Donghae		10.4		1.0		11.5		—
Soowon Environment Center Facility		2.9		1.5		15.9
Kwangyang Port Warehouse Facility		2.6		1.1		14.8
Fuel cell:
Ilsan # 1		7.3		2.4		79.9		—
Ilsan # 2		5.8		2.8		83.0		—
Ilsan # 3		3.8		2.8		81.9
Ulsan		3.3		2.8		68.2
Wind Power:
YeongGwang Jisan		4.3		3.0		12.7		—
Biomass:
Donghae		3.5		30.0		68.1		—
Capital Landfill Cogeneration Facility		2.8		5.0		—
Total		15.9		10,999		57.1		82.0

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Power Plant Remodeling and Recommissioning

Our generation subsidiaries supplement power generation capacity through remodeling or recommissioning of thermal units. Recommissioning includes installation of anti-pollution devices, modification of control systems and overall rehabilitation of existing equipment. The following table shows recent remodeling and recommissioning initiatives by our generation subsidiaries.

Power Plant	Capacity	Completed (Year)	Extension	Company
Taean#1-9	5,050 MW (500 MW×8, 1,050 MW×1)	EP(1) upgrade (#2, 2016) EP(1) upgrade (#1,3, 2017) SCR(2)  upgrade (#2,4,7, 2016) SCR(2) upgrade (#1,3,4,8,9, 2017) FGD upgrade, (#1,2017)	Anti-pollution	KOWEPO
Pyeongtaek#1-4	1,400 MW (350 MW×4)	Steam turbine upgrade (#2, 3, 2014)	10-year performance- improvement	KOWEPO
Boryeong#1-8	4,000 MW (500 MW×8)	FGD upgrade (#1,2, 2014)	Performance- improvement	KOMIPO
Seocheon#1-2	400 MW (200 MW×2)	SCR(2) : 2012	Anti-pollution	KOMIPO
Yosu #1, 2	668.6MW (#1:340, #2:328.6MW)	Boiler Type Change (CFBC(3):#1:2016, #2:2011)	30 years	KOSEP
Samcheonpo#1-2	1,120 MW (560 MW ×2)	Boiler, EP, Draft System Upgrade (#1,2: 2012)	10 years Refurbishing- modernization	KOSEP

Notes:

(1) “EP” means an electrostatic precipitation system.

(2) “SCR” means a selective catalytic reduction system.

(3) “CFBC” means a circulating fluidized bed combustion system.

Transmission and Distribution

We currently transmit and distribute substantially all of the electricity in Korea.

As of December 31, 2016, our transmission system consisted of 33,630 circuit kilometers of lines of 765 kilovolts and others including high-voltage direct current lines, and we had 830 substations with aggregate installed transformer capacity of 305,418 megavolt-amperes.

As of December 31, 2016, our distribution system consisted of 112,751 megavolt-amperes of transformer capacity and 9,122,344 units of support with a total line length of 474,099 circuit kilometers.

We make substantial investments in our transmission and distribution systems to minimize power interruptions and improve efficiency. Our current projects principally focus on increasing capabilities of the existing power networks and reducing our transmission and distribution loss, which was 3.59% of our gross generation in 2016. To cope with increasing damages to large-scale transmission and distribution facilities, we plan to reinforce stability of our transmission and distribution facilities through stricter design and material specifications. In addition, we also plan to expand underground transmission and distribution facilities to meet customer demand for more environment-friendly facilities. In order to reduce the interruption time in power distribution, which is an indicator of the quality of electricity transmission, we are also continuing to invest in automation of electricity transmission and development of new transmission technologies, among others.

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Some of the facilities we own and use in our distribution system use rights of way and other concessions granted by municipal and local authorities in areas where our facilities are located. These concessions are generally renewed upon expiration.

New Energy Industry Projects

Certain of our new energy industry projects are described below.

Advanced Metering Infrastructure

In July 2012, the Government implemented a master plan to build out a smart grid, which includes the Advanced Metering Infrastructure (“AMI”) roadmap. In accordance with such plan, we are in the process of installing “smart meters” and related communication networks and operating systems for 22 million households for target completion by 2020 as part of the “smart grid” initiative in an effort to enhance efficiency in the power electricity industry and alleviate growing energy shortage concerns. Smart meters refer to digital meters that record, on a real-time basis, electricity consumption within a household so that consumers will have a price-based incentive to enhance efficiency in their electricity usage. As of December 31, 2016, we have installed 3.3 million smart meter units, and plan to install an additional 4.5 million units in 2017. The AMI project is expected to cost Won 1.7 trillion through 2020.

Smart Grids

Smart grids refer to next-generation networks for electricity distribution that integrate information technology into existing power grids with the aim of enablingtwo-way real time exchange of information between electricity suppliers and consumers for optimal efficiency in electricity use. As part of our overall business strategy, we are currently developing and implementing smart grids based on advanced information technology, in order to promote more efficient allocation and use of electricity by consumers. We expect that such technology will improve efficiency and reduce electricity loss over the course of electricity transmission and distribution. We also expect that the smart grid initiative will significantly increase efficient energy consumption by providing real-time data to customers, which would in turn help to reduce greenhouse gas emission and decrease Korea’s reliance on foreign energy sources.

Leveraging our experience gained through high-tech intelligent power transmission and distribution network, or “smart grid” test beds in Jeju Island from 2009 to 2013, we plan to expand our smart grid project. In 2014, we successfully implemented smart grid technology at our Guri-Namyangju branch. In recognition of our achievement, we were awarded an honorable mention from the International Smart Grid Action Network and a special prize from the Global Smart Grid Federation in 2015. By the end of 2015, we implemented smart grid technology in most of our branches, and we plan to continue implementing smart grid technology to our existing plants and buildings as well as to new branches in the future. The smart grid project is scheduled to be completed in 2030.

Energy Storage Systems

In October 2013, as part of an endeavor to create new markets for energy demand management applications using information and communication technology, we established a business plan to roll out energy storage systems for frequency regulation nationwide. These systems involve the establishment and operation of batteries and transformers withlarge-sized charge and discharge capabilities adjacent to substations to transmit electricity stably with regulated frequencies and optimize the efficiency of the substation operation. This system allows full conversion of reserve capacity for frequency regulation at existinglow-cost generators into electricity storage and, if operated in sizable scale, offers opportunities for substantial cost savings in purchase of electricity.

In December 2014, we conducted a pilot project for this initiative by installing a 52 megawatts energy storage system at theSeo-Anseong substation and the Shin-Yongin substation. In July 2015, these substations

52

began to commercially operate energy storage systems, and we expanded the energy storage capacity nationwide by an additional 184 megawatts in 2015 and an additional 140 megawatts in 2016, with a view to expanding the capacity to 500 megawatts by the end of 2017. In addition, we are currently constructing one of the world’s largest indoor energy storage system for frequency regulation in Gimje substation with a 48 megawatts capacity, which is due for completion by the end of 2017.

Electric Vehicle Charging Infrastructure

In order to promote the use of environment friendly electric vehicles, we installed 447 high-speed electric vehicle charging stations in 2016. We had 1,386 electric vehicle charging stations as of December 31, 2016, and we plan to expand our electric vehicle charging infrastructure to approximately 3,000 charging stations by 2020.

Other “New Energy” Initiatives

In addition to the above, we are currently taking various initiatives in the “new energy” field, including conducting feasibility studies for diagnostic and/or preventive systems for our transmission networks using unmanned drone applications and smart sensors based on the “Internet of Things (IoT)” technology.

In January 2016, the Ministry of Trade, Industry and Energy announced an initiative to promote the new energy industry by creating the New Energy Industry Fund. For further details, see “—Recent Developments—New Energy Industry Fund.”

Nuclear

Uranium, the principal fuel source for nuclear power, accounted for 35.3%, 38.1% and 37.1% of our fuel requirements for electricity generation in 2014, 2015 and 2016, respectively.

All uranium ore concentrates used by KHNP are imported from, and conversion and enrichment of such concentrates are provided by, sources outside Korea and are paid for with currencies other than Won, primarily U.S. dollars.

In order to ensure stable supply, KHNP enters into long-term and medium-term contracts with various suppliers and supplements such supplies with purchases in spot markets. In 2016, KHNP purchased 100%, or approximately 4,200 tons, of its uranium concentrate requirement under both long-term and spot supply contracts with suppliers in the United Kingdom, Kazakhstan, France, Germany, and the United States.Under the long-term supply contracts, the purchase prices of uranium concentrates are adjusted annually based on base prices and spot market prices prevailing at the time of actual delivery. The conversion and enrichment services of uranium concentrates are provided by suppliers in Canada, France, Germany, Japan, China, Russia, the United Kingdom and the United States.A Korean supplier typically provides fabrication of fuel assemblies. Except for certain fixed contract prices, contract prices for processing of uranium are adjusted annually in accordance with the general rate of inflation. KHNP intends to obtain its uranium requirements in the future, in part, through purchases under medium- to long-term contracts and, in part, through spot market purchases.

Coal

Bituminous coal accounted for 44.1%, 46.2% and 45.9% of our fuel requirements for electricity generation in 2014, 2015 and 2016, respectively, and anthracite coal accounted for 1.9%, 1.7% and 1.8% of our fuel requirements for electricity generation in 2014, 2015 and 2016, respectively.

In 2016, our generation subsidiaries purchased approximately 75 million tons of bituminous coal, of which approximately 40%, 37%, 15%, 2% and 6% were imported from Indonesia, Australia, Russia, South Africaand others, respectively. Approximately 82% of the bituminous coal requirements of our generation subsidiaries in

53

2016 were purchased under long-term contracts with the remaining 18% purchased in the spot market. Some of our long-term contracts relate to specific generating plants and extend through the end of the projected useful lives of such plants, subject in some cases to periodic renewal. Pursuant to the terms of our long-term supply contracts, prices are adjusted periodically based on market conditions. The average cost of bituminous coal per ton purchased under such contracts amounted to Won 92,206, Won 90,902 and Won 89,118 in 2014, 2015 and 2016, respectively.

In 2016, our generation subsidiaries purchased approximately 2.19 million tons of anthracite coal. The prices for anthracite coal under such contracts are set by the Government. The average cost of anthracite coal per ton purchased under such contracts was Won 108,118, Won 108,346 and Won 96,121 in 2014, 2015 and 2016, respectively.

Oil

Oil accounted for 1.7%, 2.2% and 3.0% of our fuel requirements for electricity generation in 2014, 2015 and 2016, respectively.

In 2016, our generation subsidiaries purchased approximately 18.4 million barrels of fuel oil, substantially all of which was purchased from domestic refiners through competitive open bidding. Purchase prices are based on the spot market price in Singapore. The average cost per barrel was Won 117,692, Won 67,517 and Won 53,842 in 2014, 2015 and 2016, respectively.

LNG

LNG accounted for 10.7%, 19.7% and 10.7% of our fuel requirements for electricity generation in 2014, 2015 and 2016, respectively. In 2016, for use in electricity generation we purchased approximately 6.6 million tons of LNG from Korea Gas Corporation, a Government-controlled entity in which we currently own a 21.57 equity interest (excluding treasury shares). In 2016, we purchased a substantial portion of our LNG requirements for use in power generation from Korea Gas Corporation. Under the terms of the LNG contract with Korea Gas Corporation, all of our fivenon-nuclear generation subsidiaries jointly and severally agreed to purchase a total of 6.6 million tons of LNG in 2016, subject to an automatic price adjustment annually based on apre-determined formula if the actual purchased amount exceeds or falls short of the contracted amount. We believe the quantities of LNG provided under such contract will be adequate to meet the needs of our generation subsidiaries for LNG for the next several years. The LNG supply contracts between our generation subsidiaries and Korea Gas Corporation generally have a term of 20 years and provide for minimum purchase requirements for our generation subsidiaries, the specific terms of which are subject to negotiation between Korea Gas Corporation and our generation subsidiaries and approval by the Government. The average cost per ton of LNG under our contract with Korea Gas Corporation was Won 1,059,640, Won 775,663 and Won 594,662, in 2014, 2015 and 2016, respectively.

Hydroelectric

Hydroelectric power generation accounted for 1.3%, 1.0% and 1.1%, of our fuel requirements for electricity generation in 2014, 2015 and 2016, respectively. The availability of water for hydroelectric power depends on rainfall and competing uses for available water supplies, including residential, commercial, industrial and agricultural consumption. Pumped storage enables us to increase the available supply of water for use during periods of peak electricity demand.

Sales and Customers

Our sales depend principally on the level of demand for electricity in Korea and the rates we charge for the electricity we sell to theend-users.

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Demand for electricity in Korea grew at a compounded average rate of 1.6 % per annum for the five years ended December 31, 2016. According to the Bank of Korea, the compounded growth rate for GDP was approximately 3.0 % for the same period. The GDP growth rate was approximately 3.3%, 2.8% and 2.8 % during 2014, 2015 and 2016, respectively.

The table below sets forth, for the periods indicated, the annual rate of growth in Korea’s GDP and the annual rate of growth in electricity demand (measured by total annual electricity consumption) on ayear-on-year basis.

	2012			2013			2014			2015			2016
Growth in GDP		2.3	%		2.9	%		3.3	%		2.8	%		2.8	%
Growth in electricity consumption		2.5	%		1.8	%		0.6	%		1.3	%		2.8	%

Electricity demand in Korea varies within each year for a variety of reasons other than the general growth in GDP demand. Electricity demand tends to be higher during daylight hours due to heightened commercial and industrial activities and electronic appliance use. Due to the use of air conditioning during the summer and heating during the winter, electricity demand is higher during these two seasons than the spring or the fall. Variation in weather conditions may also cause significant variation in electricity demand.

We do not use any marketing channels, including any special sales methods, to sell electricity to our customers, other than to install electricity meterson-site and take monthly readings of such meters, based upon which invoices are sent to our customers.

Demand by the Type of Usage

The table below sets forth consumption of electric power, and growth of such consumption on ayear-on-year basis, by the type of usage (in gigawatt hours) for the periods indicated.

	2012 (GWh)		YoY growth (%)			2013 (GWh)		YoY growth (%)			2014 (GWh)		YoY growth (%)			2015 (GWh)		YoY growth (%)			2016 (GWh)		YoY growth (%)			% of Total 2016
Residential		65,484		3.1			65,815		0.5			64,457		(2.1	)		65,619		1.8			68,057		3.7			13.7
Commercial		101,593		2.1			102,196		0.6			100,761		(1.4	)		103,679		2.9			108,617		4.8			21.9
Educational		7,860		3.9			7,947		1.1			7,438		(6.4	)		7,691		3.4			8,079		5.1			1.6
Industrial		258,102		2.6			265,373		2.8			272,552		2.7			273,548		0.4			278,828		1.9			56.1
Agricultural		12,776		13.8			13,866		8.5			14,505		4.6			15,702		8.3			16,580		5.6			3.3
Street lighting		3,158		0.4			3,156		(0.1	)		3,221		2.1			3,341		3.7			3,462		3.6			0.7
Overnight Power		17,620		(5.3	)		16,496		(6.4	)		14,658		(11.1	)		14,075		(4.0	)		13,416		(4.7	)		2.7
Total		466,593		2.5			474,849		1.8			477,592		0.6			483,655		1.3			497,039		2.8			100.0

The industrial sector represents the largest segment of electricity consumption in Korea. Demand for electricity from the industrial sector was 278,828 gigawatt hours in 2016, representing a 1.9% increase from 2015, largely due to the turnaround in industries such as semiconductors, chemicals and petrochemicals that are heavy users of electricity. Demand for electricity from the commercial sector depends largely on the level and scope of commercial activities in Korea, which in recent years have resulted in increased office building construction, office automation and use of air conditioners. Demand for electricity from the commercial sector increased to 108,617 gigawatt hours in 2016, representing a 4.8% increase from 2015 largely due to a rebound in the domestic economy and increased air conditioning use in commercial buildings during the summer. Demand for electricity from the residential sector is largely dependent on population growth and use of heaters, air conditioners and other electronic appliances. In 2016, we distributed electricity to approximately 22 million households, which represent substantially all of the households in Korea. Demand for electricity from the

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residential sector increased to 68,057 gigawatt hours in 2016, representing a 3.7% increase compared to 2015, largely due to the opening of new urban clusters with large-scale residential complexes as well as increased air conditioning use in residential buildings during the summer.

Demand Management

Our ability to provide adequate supply of electricity is principally measured by the facility reserve margin and the supply reserve margin. The facility reserve margin represents the difference between the peak usage during a year and the installed capacity at the time of such peak usage, expressed as a percentage of such installed capacity. The supply reserve margin represents the difference between the peak usage in a year and the average available capacity at the time of such peak usage, expressed as a percentage of such peak usage. The following table sets forth our facility reserve margin and supply reserve margin for the periods indicated.

	2012			2013			2014			2015			2016
Facility reserve margin		7.7	%		7.5	%		16.3	%		19.4	%		17.6	%
Supply reserve margin		5.2	%		5.5	%		11.5	%		11.6	%		8.5	%

While we seek to meet the growing demand for electricity in Korea primarily by continuing to expand our generation capacity, we have also implemented several measures to curtail electricity consumption, especially during peak periods. We applytime-of-use and seasonality tariff, which are structured so that higher tariffs are charged at the time and months of peak demand to select types of customers, and we also apply a progressive rate structure for the residential use of electricity. We have several demand management programs to control demand and induce power conservation during peak hours and peak seasons such as providing incentives for reducing power consumption during peak hours.

Electricity Rates

The Electricity Business Act and the Price Stabilization Act of 1975, each as amended from time to time, prescribe the procedures for the approval and establishment of rates charged for the electricity we sell. We submit our proposals for revisions of rates or changes in the rate structure to the Ministry of Trade, Industry and Energy. The Ministry of Trade, Industry and Energy then reviews these proposals and, following consultation with the Ministry of Strategy and Finance and review by the Korea Electricity Commission, makes the final decision.

Under the Electricity Business Act and the Price Stabilization Act, electricity rates are established at levels that would enable us to recover our operating costs attributable to our basic electricity generation, transmission and distribution operations as well as receive a fair investment return on capital used in those operations.

In May 2014, in order to make conforming changes to the standards for determining the public utility rates and to further bolster the reasonableness of cost determination, the Ministry of Trade, Industry and Energy amended the standards for determining the electricity tariff rates. The main amendments include (i) recording as our cost of electricity (which forms part of our operating costs) the pretax income of our six generation subsidiaries (which was previously deducted from our operating costs), (ii) excluding from our rate base our equity interests in our six generation subsidiaries (which were previously included in the rate base discussed below), and (iii) when determining working capital, considering the actual time of our cost recovery (namely, the accounts receivable collection period and the accounts payable payment period).

For the purposes of rate approval, operating costs are defined as the sum of our operating expenses (which principally consists of cost of sales and selling and administrative expenses) and our adjusted income taxes.

Fair investment return represents an amount equal to the rate base multiplied by the rate of return.

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Following the amendments to its computation methods in May 2014 as described above, the rate base is currently equal to the sum of:

• net utility plant in service (which is equal to utility plant minus accumulated depreciation minus revaluation reserve);

• the portion of working capital which is equal to the appropriate level of operating costs minus depreciation and othernon-cash charges while taking into account the actual time of cost recovery; and

• the portion ofconstruction-in-progress which is charged from our retained earnings.

The amounts used for the variables in the rates are those projected by us for the periods to be covered by the rate approval.

For the purpose of determining the fair rate of return, the rate base is divided into two components in proportion to our total shareholders’ equity and our total debt. The rate of return permitted in relation to the debt component of the rate base is set at a level designed to approximate the weighted average interest cost on all types of borrowing for the periods covered by the rate approval. The rate of return permitted in relation to the equity component of the rate base is set by applying the capital asset pricing model which takes account of the risk-free rate, the return on the Korea Stock Price Index, KOSPI, a Korean equity market index, and the correlation of the stock price of our company with KOSPI. In 2015, the approved rate of return on the debt component of the rate base was 1.12 % while the approved rate of return on the equity component of the rate base was 2.88 %. As a result of such approved rates of returns, the fair rate of return in 2015 was determined to be 4.00 %. The fair rates of return for 2016 and 2017 have not yet been determined.

The Electricity Business Act and the Price Stabilization Act do not specify a basis for determining the reasonableness of our operating expenses or any other items (other than the level of the fair investment return) for the purposes of the rate calculation. However, the Government exercises substantial control over our budgeting and other financial and operating decisions.

In addition to the calculations described above, a variety of other factors are considered in setting overall tariff levels. These other factors include consumer welfare, our projected capital requirements, the effect of electricity tariff on inflation in Korea and the effect of tariff on demand for electricity.

From time to time, our actual rate of return on invested capital may differ significantly from the fair rate of return on invested capital assumed for the purposes of electricity tariff approvals, for reasons, among others, related to movements in fuel prices, exchange rates and demand for electricity that differ from what is assumed for determining our fair rate of return. For example, between 1987 and 1990, the actual rate of return was above the fair rate of return due to declining fuel costs and rising demand for electricity at a rate not anticipated for purposes of determining our fair rate of return. Similarly, depreciation of the Won against the U.S. dollar accounted for our actual rates of return being lower than the fair rate of return for the period from 1996 to 2000. For the period between 2006 and 2013, our actual rates of return were lower than the fair rate of return largely due to a general increase in fuel costs and additional facility investment costs incurred, the effects of which were not offset by timely increases in our tariff rates. Since 2014, however, largely due to a decrease in fuel costs reflective of the drop in oil prices, our actual rate of return has surpassed the fair rate of return; however, substantially all of the resulting excess has been used to fund capital expenditure and repair and maintenance, as well as to offer tariff discounts to economically or otherwise disadvantaged households, and make investments in renewable energy and other environmental programs.

Partly in response to the variance between our actual rates of return and the fair rates of return, the Government from time to time increases the electricity tariff rates, but there typically is a significant time lag for the tariff increases as such increases requires a series of deliberative processes and administrative procedures and the Government also has to consider other policy considerations, such as the inflationary effect of overall tariff increases and the efficiency of energy use from sector-specific tariff increases.

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Prior to November 2013, the Government from time to time effected tariff increases that typically covered all sectors, namely, residential, commercial and industrial, mainly in response to sustained increases in fuel prices. No cross-sector tariff increase has been implemented since November 2013 largely due to a general decline in fuel prices and relatively stable exchange rates.However, effective January 1, 2017, the Government made several adjustments to the existing rate structure in order to ease the burden of electricity tariff on residential consumers as well as promote the use of renewable energy. First, the progressive rate structure applicable to the residential sector, which applies a gradient of increasing tariff rates for heavier electricity usage, was changed from asix-tiered structure with the highest rate being no more than 11.7 times the lowest rate (which gradient system has been in place since 2005) into a three-tiered structure with the highest rate being no more than three times the lowest rate in order to reflect the changes in the pattern of electricity consumption and reduce the electricity charges payable by consumers. Second, the new tariff structure encourages energy saving by offering rate discounts to residential consumers that voluntarily reduce electricity consumption while charging special high rates to residential consumers with heavy electricity consumption during peak usage periods during the summer and the winter. Third, a temporary rate discount will apply during 2017 to 2019 to investments in environmentally friendly facilities such as energy storage systems, renewable energy and electric cars. Such adjustments may lower our revenues from the sale of electricity and accordingly have a material adverse effect on our results of operation and cash flows.

The tariff rates we charge for electricity vary among the different classes of consumers, which principally consist of industrial, commercial, residential, educational and agricultural consumers. The tariff also varies depending upon the voltage used, the season, the time of usage, the rate option selected by the user and, in the residential sector, the amount of electricity used per household, as well as other factors. For example, we adjust for seasonal tariff variations by applying higher rates when demand tends to rise such as during the months of June, July and August (when the demand tends to rise due to increased use of air conditioning) and November, December, January and February (when demand tends to rise due to increased use of heating), which reflects the policy of the Korean government to cope with the rise in electricity demand during peak seasons by encouraging a more efficient use of electricity by customers. In addition, we provide discounts on tariff rates to certain users such as low income households.

Our current tariff schedule, which became effective as of January 1, 2017 reflecting the adjustments outlined above, is summarized below by the type of usage:

• Industrial. The monthly basic charge varies from Won 5,550 per kilowatt to Won 9,810 per kilowatt depending on the type of contract, the voltage used and the rate option. The energy usage charge varies from Won 53.7 per kilowatt-hour to Won 196.6 per kilowatt-hour depending on the type of contract, the voltage used, the season, the time of day and the rate option.

• Commercial. The monthly basic charge varies from Won 6,160 per kilowatt to Won 9,810 per kilowatt depending on the type of contract, the voltage used and the rate option. The energy usage charge varies from Won 53.7 per kilowatt-hour to Won 196.6 per kilowatt-hour depending on the type of contract, the voltage used, the season, the time of day and the rate option.

• Residential. The monthly basic charge varies from Won 910 for electricity usage of less than 200 kilowatt hours to Won 7,300 for electricity usage in excess of 400 kilowatt hours. Residential tariff also includes an energy usage charge ranging from Won 93.3 to Won 280.6 per kilowatt-hour for electricity usage depending on the amount of usage and voltage. During the peak usage periods during the summer and the winter, namely the months of July and August and December to February, a higher energy usage charge of Won 709.5 per kilowatt-hour applies to residential consumers whose monthly electricity consumption exceeds 1,000 kilowatts hour.

• Educational. The monthly basic charge varies from Won 5,230 per kilowatt to Won 6,980 per kilowatt depending on the voltage used and the rate option. The energy usage charge varies from Won 43.8 per kilowatt-hour to Won 160.4 per kilowatt-hour depending on the voltage used, the season and the rate option.

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• Agricultural. The monthly basic charge varies from Won 360 per kilowatt to Won 1,210 per kilowatt depending on the type of usage. The energy usage charge varies from Won 21.6 per kilowatt-hour to Won 41.9 per kilowatt-hour depending on the type of contract, the voltage used and the season.

• Street-lighting. The monthly basic charge is Won 6,290 per kilowatt and the energy usage charge is Won 85.9 per kilowatt-hour. For electricity capacity of less than 1 kilowatt or for places where the installation of the electricity meter is difficult, a fixed rate of Won 37.5 per watt applies, with the minimum monthly charge of Won 1,220.

In 2001, as part of implementing the Restructuring Plan, the Ministry of Trade, Industry and Energy established the Electric Power Industry Basis Fund to enable the Government to take over certain public services previously performed by us. In 2016, 3.7% of the tariff we collected from our customers was transferred to this fund prior to recognizing our sales revenue.

Power Development Strategy

We and our generation subsidiaries make plans for expanding or upgrading our generation capacity based on the Basic Plan, which is generally revised and announced every two years by the Government. In July 2015, the Government announced the Seventh Basic Plan relating to the future supply and demand of electricity. The Seventh Basic Plan, which is effective for the period from 2015 to 2029, focuses on, among other things, (i) ensuring a stable supply of electricity, (ii) increasing the portion of low carbon electricity supply sources, (iii) active consumer demand management, (iv) permanent closing of operations of the Kori #1 nuclear power unit, and (v) diversifying electricity supply sources through greater utilization of renewable energy sources.

In January 2014, prior to the announcement of the Seventh Basic Plan, the Ministry of Trade, Industry and Energy adopted the Second Basic National Energy Plan following consultations with representatives from civic groups, the power industry and academia. The Second Basic National Energy Plan, which is a comprehensive plan that covers the entire spectrum of energy industries in Korea, covers the period from 2014 to 2035 and focuses on the following six key tasks: (i) shifting the focus of energy policy to demand management with a goal of reducing the growth of electricity demand by 15% by 2035 through efficiency enhancement programs compared to the projected growth in the absence of such efficiency enhancement programs, (ii) establishing a geographically decentralized electricity generation system so as to reduce transmission losses with a goal of supplying at least 15% of total electricity through such system by 2035, (iii) applying latest greenhouse gas emission reduction technologies to newly constructed generation units in order to further promote safety and environmental friendliness, (iv) strengthening resource exploration and fuel procurement capabilities to enhance Korea’s energy security, (v) ensuring stable supply of energy and increasing the portion of electricity supplied from renewable sources to 11% by 2035,(vi) reinforcing the system for stable supply of conventional energy, such as oil and gas, and (vii) introducing in 2015 an energy voucher system in lieu of a tariff discount system for the benefit oflow-income consumers. In addition, the Second Basic National Energy Plan has revised the target level of electricity generated by nuclear sources as a percentage of total electricity generated to 29%, compared to 41% under the First Basic National Energy Plan announced in 2008, which covered the period from 2008 to 2030.

We cannot assure that the Seventh Basic Plan, the Second Basic National Energy Plan or the respective plans to be subsequently adopted will successfully achieve their intended goals, the foremost of which is to ensure, through carefully calibrated capacity expansion and other means, balanced overall electricity supply and demand in Korea at affordable costs to end users while promoting efficiency and environmental friendliness in the consumption and production of electricity. If there is significant variance between the projected electricity supply and demand considered in planning our capacity expansions and the actual electricity supply and demand or if these plans otherwise fail to meet their intended goals or have other unintended consequences, this may result in inefficient use of our capital, mispricing of electricity and undue financing costs on the part of us and our generation subsidiaries, among others, which may have a material adverse effect on our results of operations, financial condition and cash flows.

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Capital Investment Program

The table below sets forth, for each of the years ended December 31, 2014, 2015 and 2016, the amounts of capital expenditures for the construction of generation, transmission and distribution facilities.

2014	2015		2016
(In billions of Won)
￦16,629	￦	15,750	￦	13,950

The table below sets forth the currently estimated installed capacity for new or expanded generation units to be completed by our generation subsidiaries in each year from 2017 to 2021 based on the Seventh Basic Plan, as amended.

Year	Number of Units	Type of Units	Total Installed Capacity
			(Megawatts)
2017	2	Nuclear power		2,800
	1	Coal-fired		1,000
	3	LNG-combined		1,270
2018	1	Nuclear power		1,400
	1	LNG-combined		200
2019	1	Coal-fired		1,000
2020	None
2021	1	Nuclear power		1,400

For the period from 2022 to 2029, our generation subsidiaries currently plan to complete seven additional nuclear units with an aggregate installed capacity of 10,200 megawatts.

As part of our capital investment program, we also intend to add new transmission lines and substations, continue to replace overhead lines with underground cables and improve the existing transmission and distribution systems.

The actual number and capacity of generation units and transmission and distribution facilities we construct and the timing of such construction are subject to change depending upon a variety of factors, including, among others, changes in the Basic Plan, demand growth projections, availability and cost of financing, changes in fuel prices and availability of fuel, ability to acquire necessary plant sites, environmental considerations and community opposition.

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The table below sets forth, for the period from 2017 to 2019, the budgeted amounts of capital expenditures pursuant to our capital investment program, which primarily consist of budgets for the construction of generation, transmission and distribution facilities and, to a lesser extent, renewable energy generation and new energy industry projects.The budgeted amounts may vary from the actual amounts of capital expenditures for a variety of reasons, including, among others, the implementation of the Seventh Basic Plan, changes in the number of units to be constructed, the actual timing of such construction, changes in rates of exchange between the Won and foreign currencies and changes in interest rates.

	2017		2018		2019		Total
	(in billions of Won)
Generation(1):
Nuclear	￦	3,954	￦	5,103	￦	5,194	￦	14,251
Thermal		3,166		3,007		2,635		8,808
Sub-total		7,120		8,110		7,829		23,059
Transmission and Distribution:
Transmission		2,772		3,142		3,185		9,009
Distribution		3,009		2,156		2,297		7,462
Sub-total		5,781		5,298		5,482		16,561
Others(2)		1,988		2,452		2,760		7,200
Total	￦	14,889	￦	15,860	￦	16,071	￦	46,820

Notes:

(1) The budgeted amounts for our generation facilities are based on the Seventh Basic Plan.

(2) Principally consists of investments in renewable energy generation and new energy industry projects, among others.

In January 2016, the Ministry of Trade, Industry and Energy announced an initiative to promote the new energy industry by creating funds sponsored by government-affiliated energy companies. The purpose of these funds is to invest in substantially all frontiers of the new energy industry, including renewable energy, energy storage systems, electric vehicles,small-sized self-sustaining electricity generation grids known as “micro-grids”, among others, as well as invest instart-up companies, ventures, small- tomedium-sized enterprise and project businesses that engage in these businesses but have not previously attracted sufficient capital from the private sector. The total size of these funds was US$1 trillion in 2016, which was funded from our budget for new energy industry projects, which totaled US$6.4 trillion in 2016 and was expended in research and development, efficiency improvements and educational solar power projects, among others. Our budget for new energy industry projects in 2017 amounts to US$5.6 trillion, of which US$1 trillion has been earmarked for potential additional commitments to the New Energy Industry Fund.

Furthermore, according to a plan announced in July 2016 by the Ministry of Trade, Industry and Energy in relation to coal-fired electricity generation units, 10 of our coal generation units that are 30 years or older will be required to be shut down or convert to another fuel use, 43 of our such units that are less than 30 years old will be subject to retrofitting and overall replacement of environmental facilities, and 20 of our such units currently under construction will be subject to more rigorous emission standards. In addition, the Government indicated that it would not allow any new construction of additional coal-fired generation units after 2019, which means that LNG is likely to be used more in the future as the substitute for coal, and since LNG is a more expensive fuel source than fuel, this regulation is expected to drive up the average cost of generating electricity. Compliance with such measures is expected to result in our incurring significant costs.

We have financed, and plan to finance in the future, our capital investment programs primarily through net cash provided by our operating activities and financing in the form of debt securities and loans from domestic

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financial institutions, and to a lesser extent, borrowings from overseas financial institutions. In addition, in order to prepare for potential liquidity shortage, we and our generation subsidiaries maintain several credit facilities with domestic financial institutions in the aggregate amounts of Won 3,747 billion and US$696 million, the full amount of which was available as of December 31, 2016. we, KHNP, KOSEP and KOWEPO also maintain global medium-term note programs in the aggregate amount of US$11.4 billion, of which approximately US$4.8 billion remains currently available for future drawdown. KOSEP also maintains an A$2 billion Australian dollar medium-term note program, of which approximately A$1.7 billion remains current available for future drawdown. See also Item 5.B. “Liquidity and Capital Resources—Capital Resources.”

Environmental Programs

The Environmental Policy Basic Act, the Air Quality Preservation Act, the Water Quality Preservation Act, the Marine Pollution Prevention Act and the Waste Management Act, collectively referred in this annual report as the Environmental Acts, are the major laws of Korea that regulate atmospheric emissions, waste water, noise and other emissions from our facilities, including power generators and transmission and distribution units. Our existing facilities are currently in material compliance with the requirements of these environmental laws and international agreements, such as the United Nations Framework Convention on Climate Change, the Montreal Protocol on Substances that Deplete the Ozone Layer, the Stockholm Convention on Persistent Organic Pollutants and the Basel Convention on the Control of Transboundary Movements of Hazardous Wastes and Their Disposal. In order to foster coordination among us and our generation subsidiaries in respect of climate change, we and 11 of our electricity-related subsidiaries formed the CEO Coordination Committee in June 2016.

We continuously endeavor to contribute to sustainable growth (whether as an economy, a society or an ecosystem) by actively taking actions that befit our social responsibility as a corporate citizen in the energy industry. For example, in 2005, we became the first public company in Korea to join the United Nations Global Compact, an international voluntary initiative designed to hold a forum for corporations, United Nations agencies, labor and civic groups to promote reforms in economic, environmental and social policies. As part of our involvement with such initiative, we issue an annual report named the “Sustainability Report” to disclose our activities from the perspectives of economy, environment and society, in accordance with the reporting guidelines of the Global Reporting Initiative, the official collaborating center of the United Nations Environment Program that works in cooperation with United Nations Secretary General. In recognition of our efforts and achievements to reduce carbon emissions in response to global climate change, in May 2013, we obtained the Carbon Trust Standard certification issued by Carbon Trust, a British nonprofit organization with the goal of establishing a sustainable, low carbon economy. In 2015, we obtained recertification from Carbon Trust by satisfying even more rigorous evaluation criteria. We are also a participant of the Carbon Disclosure Project, an international organization that promotes transparency in informational disclosure of carbon management process, and in 2016 we were recognized by the Carbon Disclosure Project for scoring the highest in the energy and utility sector in relation to climate change response. In 2014, 2015 and 2016 we were selected as the best company in the global electricity utility sector in the Dow Jones Sustainability Indices, which measures management performance in terms of contribution to sustainability. We aim to become a global leader in carbon management and reduction.

The table below sets forth the number of emission control equipment installed at thermal power plants by our generation subsidiaries as of December 31, 2016.

	KOSEP		KOMIPO		KOWEPO		KOSPO		EWP
Flue Gas Desulphurization System		14		14		14		11		15
SelectiveNon-catalytic Reduction System		—		2		—		—		3
Selective Catalytic Reduction System		12		19		15		12		18
Electrostatic Precipitation System		16		16		14		12		18
Low NO2 Combustion System		18		32		30		30		30
Total		60		83		73		65		84

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The table below sets forth the amount of annual emission from all generating facilities of our generation subsidiaries for the periods indicated. The amount of CO2 emissions may increase in the near future due to the construction of additional coal thermal power plants but is expected to decrease in the long-term, principally due to an increased use of nuclear power and renewable energy and the implementation of the carbon emission trading system.

Year	Sox (g/MWh)		NOx (g/MWh)		Dust (g/MWh)		CO2 (kg/MWh)
2014		170		291		8		471
2015		164		266		8		455
2016		246		395		11		747

In order to comply with the current and expected environmental standards and address related legal and social concerns, we intend to continue to install additional equipment, make related capital expenditures and undertake several environment-friendly measures to foster community goodwill. For example, under the Persistent Organic Pollutants Management Act enacted in 2007, we are required to remove polychlorinated biphenyl, or PCB, a toxin, from the insulating oil of our transformers by 2025. In addition, when constructing certain large new transmission and distribution facilities, we assess and disclose their environmental impact at the planning stage of such construction, as well as consult with local residents, environmental groups and technical experts to generate community support for such projects. We exercise additional caution in cases where such facilities are constructed near ecologically sensitive areas such as wetlands or preservation areas. We also make reasonable efforts to minimize any negative environmental impact, for example, by using more environment-friendly technology and hardware. In addition, we also undertake measures to minimize losses during the transmission and distribution process by making our power distribution network more energy-efficient in terms of loss of power, as well as to lower consumption of energy, water and other natural resources. In addition, we and our subsidiaries acquired the ISO 14000 certification, an environmental management system widely adopted internationally, in 2013 and have made it a high priority to make our electricity generation and distribution more environmentally friendly. In addition to the ISO 14000 certification, we further reinforced our environmental management system by acquiring the ISO 14001 certification as well as a domestic “GMS (Green Management System), KS I 7001/7002” certification, which relates to the management of resources, energy, green house effects and social responsibilities, in 2013. In 2014, we were awarded the presidential award for environmental contributions as a corporate citizen, after scoring the highest among 102 corporations that competed for the award. In order to encourage the implementation of environment-friendly measures by other corporations and enhance environmental awareness at a social level, we have been disclosing our environment-related activities and achievements to the public through the Environment Information System managed by the Ministry of Environment since 2012.

Our environmental measures, including the use of environment-friendly but more expensive parts and equipment and allocation of capital expenditures for the installation of such facilities, may result in increased operating costs and liquidity requirement. The actual cost of installation and operation of such equipment and related liquidity requirement will depend on a variety of factors which may be beyond our control. There is no assurance that we will continue to be in material compliance with legal or social standards or requirements in the future in relation to the environment.

As part of our long-term strategic initiatives, we plan to take other measures designed to promote the generation and use of environmentally friendly, or green, energy. See Item 4.B. “Business Overview—Strategy.”

Some of our generation facilities are powered by renewable energy sources, such as solar energy, wind power and hydraulic power. While such facilities are currently insignificant as a proportion of our total generation capacity or generation volume of our generation subsidiaries, we expect that the portion will increase in the future, especially since we are required to comply with the Renewable Portfolio Standard program as described below.

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The following table sets forth the generation capacity and generation volume in 2016 of our generation facilities that are powered by renewable energy sources.

	Generation Capacity (megawatts)			Generation Volume (gigawatt-hours)
Hydraulic Power		5,350			4,835
Wind Power		138			186
Solar Energy, Fuel Cells and Biogas		174			908
Subtotal		5,662			5,929
As percentage of total(1)		7.2	%		1.4	%

Note:

(1) As a percentage of the total generation capacity or total generation volume, as applicable, of us and our generation subsidiaries.

In order to deal with shortage of fuel and other resources and also to comply with various environmental standards, in 2012 the Government adopted the Renewable Portfolio Standard program, which replaced the Renewable Portfolio Agreement which had been in effect from 2006 to 2011. Under this program, each of our generation subsidiaries is required to generate a specified percentage of total electricity to be generated by such generation subsidiary in a given year in the form of renewable energy or, in case of a shortfall, purchase a corresponding amount of a Renewable Energy Certificate (a form of renewable energy credit) from other generation companies whose renewable energy generation surpass such percentage. The target percentage was 3.0% in 2015 and 3.5% in 2016 and will incrementally increase to 10.0% by 2023. Fines are to be levied on any subsidiary that fails to do so in the prescribed timeline. In 2015, all six of our generation subsidiaries met the target through renewable energy generation and/or the purchase of a Renewable Energy Certificate. Compliance by our generation subsidiaries of the 2016 target is currently under evaluation, and if any generation subsidiary is found to have failed to meet the target for 2016 or for subsequent years, such generation subsidiary may become subject to fines. We expect that any additional costs required for implementation of the Renewable Portfolio Standard program will be covered by a corresponding increase in electricity tariff. However, there is no assurance that the Government will in fact raise the electricity tariff to a level sufficient to fully cover such additional costs or at all.

As to how we plan to finance our capital expenditures related to our environmental programs, see “—Capital Investment Program.”

In March 2017, the Electricity Business Act was amended to the effect that starting in June 2017, future national planning for electricity supply and demand in Korea should consider the environmental and safety impacts of such planning. However,to-date, no specific guidelines have been provided by the Government as to how to implement this provision, and it is therefore difficult to assess in advance what impact such provision will have on our business, results of operations or financial condition.However, the amendment will likely lead to the expansion of our environmental programs.

Furthermore, under the new electricity rate structure effected by the Government effective January 1, 2017, a temporary rate discount will apply in the case of investments in environmentally friendly facilities such as energy storage systems, renewable energy and electric cars during 2017 to 2019.

Community Programs

Building goodwill with local communities is important to us in light of concerns among the local residents and civic groups in Korea regarding construction and operation of generation units, particularly nuclear generation units. The Act for Supporting the Communities Surrounding Power Plants and the Act on the Compensation and Support for Areas Adjacent to Transmission and Substation Facilities require that the

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generation companies and the affected local governments carry out various activities up to a certain amount annually to address neighboring community concerns. Pursuant to these Acts, we and our generation subsidiaries, in conjunction with the affected local and municipal governments, undertake various programs, including scholarships and financial assistance tolow-income residents.

Under the Act for Supporting the Communities Surrounding Power Plants, activities required to be undertaken under the Act are funded partly by the Electric Power Industry Basis Fund (see “—Sales and Customers—Electricity Rates”) and partly by KHNP as part of its budget. KHNP is required to make annual contributions to the affected local communities in an amount equal to Won 0.25 per kilowatt-hour of electricity generated by its nuclear generation units during theone-year period before the immediately preceding fiscal year, Won 5 million per thousand kilowatts of hydroelectric generation capacity and Won 0.5 million per thousand kilowatts of pumped-storage generation capacity.In addition, under Korean tax law, KHNP is required to pay local tax levied on its nuclear generation units in an amount equal to Won 1 (effective January 1, 2015, which reflects an increase from Won 0.5 previously per kilowatt-hour of their generation volume in the affected areas) and Won 2 per 10 cubic meters of water used for hydroelectric generation.

The Act on the Compensation and Support for Areas Adjacent to Transmission and Substation Facilities, enacted in January 2014 with effect from July 2014, prescribes measures to be taken by power generation or transmission companies with respect to the communities adjacent to transmission and substation facilities. Under this Act, those who own land or houses in the vicinity of transmission lines and substation may claim compensation for damages or compel purchase of such properties by the power generation or transmission companies which are legally obligated in principle to pay for such damages or purchase such properties. In addition, under this Act, residents of communities adjacent to transmission and substation facilities are entitled to subsidies on electricity tariff as well as support for a variety of welfare projects and collective business ventures.

Prior to the construction of a generation unit, our generation subsidiaries perform an environmental impact assessment which is designed to evaluate public hazards, damage to the environment and concerns of local residents. A report reflecting this evaluation and proposing measures to address the problems identified must be submitted to and approved by the Ministry of Trade, Industry and Energy following agreement with related administrative bodies, including the Ministry of Environment prior to the construction of the unit. Our generation subsidiaries are then required to implement the measures reflected in the approved report. Despite these activities, civic community groups may still oppose the construction and operation of generation units (including nuclear units), and such opposition could adversely impact our construction plans for generation units (including nuclear units) and have a material adverse effect on our business, results of operations and cash flow.

Upon relocation of our corporate headquarters in November 2014, we developed and established Bitgaram Energy Valley as a smart energy hub city in Naju, to attract and facilitate the growth ofstart-ups and research institutions related to new energy industries while contributing to the local economy, balanced regional development and job creation. To achieve this goal, we provide funding, business networks and research and development assistance to qualifiedstart-ups and research institutions in the new energy industries. As of March 31, 2017, we had signed agreements with 200 companies relating to investments in the Bitgaram Energy Valley, and we currently aim to increase the total number of companies investing in the Bitgaram Energy Valley to 250 companies by the end of 2017 and 500 companies by the end of 2020.

Nuclear Safety

KHNP takes nuclear safety as its top priority and continues to focus on ensuring the safe and reliable operation of nuclear power plants. KHNP also focuses on enhancing corporate ethics and transparency in the operation of its plants.

KHNP has a corporate code of ethics and is firmly committed to enhancing nuclear safety, developing new technologies and improving transparency. KHNP has also established the “Statement of Safety Policy for

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Nuclear Power Plants” to ensure the highest level of nuclear safety. Furthermore, KHNP invests approximately 5% of its total annual sales into research and development for the enhancement of nuclear safety and operational performance.

KHNP implements comprehensive programs to monitor, ensure and improve safety of nuclear power plants. In order to enhance nuclear safety through risk-informed assessment, KHNP conducts probabilistic safety assessments, including for low power-shutdown states, for all its nuclear power plants. In order to systematically verify nuclear safety and identify the potential areas for safety improvements, KHNP performs periodic safety reviews on a10-year frequency basis for all its operating units. These reviews have been completed for Kori #1, 2, 3 and 4, Hanbit #1, 2, 3, 4, 5 and 6, Hanul #1, 2, 3 and 4 and Wolsong #1, 2, 3 and 4. Reviews for Hanul #5 and 6 are in progress. In order to enhance nuclear safety and plant performance, KHNP has established a maintenance effectiveness monitoring program based on the maintenance rules issued by the United States Nuclear Regulatory Commission, which covers all of KHNP’s nuclear power plants in commercial operation.

KHNP has developed the Risk Monitoring System for operating nuclear power plants, which it implements in all of its nuclear power plants. The Risk Monitoring System is intended to help ensure nuclear plant safety. In addition, KHNP has developed and implemented the Severe Accident Management Guidelines and is developing the Severe Accident Management Guidelines for Low Power-Shutdown States in order to manage severe accidents for all of its nuclear power plants.

KHNP conducts various activities to enhance nuclear safety such as quality assurance audits and reviews by the KHNP Nuclear Review. KHNP maintains a close relationship with international nuclear organizations in order to enhance nuclear safety. In particular, KHNP invites international safety review teams such as the World Association of Nuclear Operators (“WANO”) Peer Review Team and the Expert Mission Team to its nuclear plants for purposes of meeting international standards for independent review of its facilities. KHNP actively exchanges relevant operational information and technical expertise with its peers in other countries. For example, KHNP conducted five WANO Peer Reviews Hanul #5, and #6 and WANO PreStart-up Review for Shin-Kori#4 in 2016. KHNP also invited WANOFollow-up Peer Review Team at Wolsong #1, #2, #3 and #4, Hanul #1, #2, #3 and #4, Shin-Kori #1, and #2 in 2016.The recommendations and findings from this event were shared with KHNP’s other nuclear plants to implement improvements at such plants.

The average level of radiation dose per unit amounted to a relatively low level of 0.44 man-Sv in 2016, which was substantially lower than the global average of 0.72 man-Sv/year in 2015 as reported in the WANO performance indicator report.

In response to the damage to the nuclear facilities in Japan as a result of the tsunami and earthquake in March 2011, the Government conducted additional safety inspections on nuclear power plants by a group of experts from governmental authorities, civic groups and academia. As a result of such inspections, the Government required KHNP to perform 50 comprehensive safety improvement measures. The Government also established the Nuclear Safety & Security Commission in October 2011 for neutral and independent safety appraisals. KHNP developed ten additional measures through benchmarking of overseas cases and internal analysis of current operations. As of December 31, 2016, KHNP has completed implementation of all such measures.

From time to time, our nuclear generation units may experience unexpected shutdowns. For example, on September 12, 2016, multiple earthquakes including a magnitude 5.8 earthquake hit the city of Gyeongju, a home to KHNP’s headquarters and Wolsong Nuclear Power Plant. Although there was no material safety issues, KHNP had manually stopped the operations of Wolsong Nuclear Power Plant units #1, 2, 3, and 4 according to the safety guidelines. All units have resumed their operations on December 5, 2016, with the approval by the Nuclear Power Safety Commission. KHNP continues to implement measures to improve the safety by reinforcing seismic capability of its core facilities and performing stress tests across all its nuclear power plants.

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Low and intermediate level waste, or LILW, and spent fuels are stored in temporary storage facilities at each nuclear site of KHNP. The temporary LILW storage facilities at the nuclear sites had been sufficient to accommodate all LILWs produced up to 2015. Korea Radioactive Waste Agency (“KORAD”) completed the construction of a LILW disposal facility in the city of Gyeongju, and government approval for its operations was obtained in December 2014.

In order to increase the storage capacity of temporary storage facilities for spent fuels, KHNP has been pursuing various projects, such as installing high-density racks in spent fuel pools and building dry storage facilities. Through these activities, we expect that the storage capacity for spent fuels in all nuclear sites will be sufficient to accommodate all the spent fuels produced by 2017. The policy for spent fuel management options is currently under development.

In 2009, the Radioactive Waste Management Act (“RWMA”) was enacted in order to centralize management of the disposal of spent fuel and LILW and enhance the security and efficiency of related management processes. The RWMA designates KORAD to manage the disposal of spent fuels and LILW. Pursuant to the RWMA, the Government has established the Radioactive Waste Management Fund. The management expense for LILW is paid when LILW is transferred to KORAD, and the charge for spent fuel is paid based on the quantity generated every quarter. LILW-related management costs and charges for spent fuel are reviewed by the Ministry of Trade, Industry and Energy every two years.In December 2014, such costs and charges were increased by a committee composed of Government officials, KHNP, Korea Radioactive Waste Management Corporation and experts in finance and accounting. The committee is currently assessing the costs and charges for thetwo-year period starting from the second quarter of 2017. If such costs and charges are determined to be higher than previous years, this may result in an increase in future expenses that KHNP may incur in relation to radioactive waste.

All of KHNP’s nuclear plants are currently in compliance with Korean law and regulations and the safety standards of the IAEA in all material respects. For a description of certain past incidents relating to quality assurance in respect of KHNP, see Item 3.D. “Risk Factors—Our risk management policies and procedures may not be fully effective at all times.”

Decommissioning

Decommissioning of a nuclear power unit is the process whereby the unit is shut down at the end of its life, the fuel is removed and the unit is eventually dismantled. KHNP implements a dismantling policy under which dismantling would take place five to ten years after the unit’s closure. KHNP renewed the operating license of Kori #1, the first nuclear power plant constructed in Korea, which commenced operation in 1978, for an additional ten years in 2007. At the recommendation of the Ministry of Trade, Industry and Energy, KHNP has decided not to renew the operating license of Kori #1. Therefore decommissioning of Kori #1 will begin upon expiration of the operating license in June 2017. In February 2015, KHNP also renewed the operation license of Wolsong #1 (which originally expired in November 2012) for an additional ten years until 2022. In June 2015, reactivation of Wolsong #1 was approved by the NSSC after periodic inspection. However, a civic group has since then brought a lawsuit to reverse such approval, and in February 2017, a lower court ruled to annul the NSSC’s approval, which ruling has since been appealed. At present, the outcome of this litigation remains uncertain. The initial phase of decommissioning (namely, safety inspection and removal of spent fuels) of KHNP’s nuclear power generation units is expected to commence after June 2017. KHNP retains full financial and operational responsibility for decommissioning its units.

KHNP has accumulated decommissioning costs as a liability since 1983. The decommissioning costs of nuclear facilities are defined by the Radioactive-Waste Management Act, which requires KHNP to credit annual appropriations separately. These costs are estimated based on studies conducted by the relevant committees, and are reviewed by the Ministry of Trade, Industry and Energy every two years. In 2016, due to decreased discount rates and the commencement of operation of Shin-Kori #3, the total amount of allowances increased as of

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December 31, 2016, and, as a result, KHNP was required to accrue Won 12,946 billion for the costs of dismantling and decontaminating existing nuclear power plants as of December 31, 2016, which consisted of dismantling costs of nuclear plants of Won 10,196 billion and dismantling costs of spent fuel and radioactive waste of Won 2,750 billion. For accounting treatment of decommissioning costs, see Item 5.A. “Operating Results—Critical Accounting Policies—Decommissioning Costs.”

Overseas Activities

We are engaged in a number of overseas activities. We believe that such activities help us diversify our revenue streams by leveraging the operational experience of us and our subsidiaries gathered from providing a full range of services, such as power plant construction and specialized engineering and maintenance services in Korea, as well as establishing strategic relationships with countries that are or may become providers of fuels.

Throughout the years, we have sought to diversify the geographic focus of our operations from Asia to the rest of the world, including the resource-rich Middle East, Australia and Africa, as well as expand our project portfolio to include the construction and operation of conventional thermal generation units, nuclear generation units and renewable energy power plants and mining and development of fuel sources. While strategically important, we believe that our overseas activities, as currently being conducted, are not in the aggregate significant in terms of scope or amount compared to our domestic activities. In addition, a number of the overseas contracts currently being pursued are based onnon-binding memoranda of understanding and the details of such projects may significantly change during the course of negotiating the definitive agreements.

Below is a description of our major overseas projects.

Generation projects

Nuclear Generation Project

In December 2009, following an international open bidding process, we entered into a prime contract with the Emirates Nuclear Energy Corporation (the “ENEC”), a state-owned nuclear energy provider of the United Arab Emirates (“UAE”), to design and construct four civil nuclear power generation units to be located in Barakah, a region approximately 270 kilometers from Abu Dhabi, for the UAE’s peaceful nuclear energy program. Under the contract, we and our subcontractors, some of which are our subsidiaries, are to perform various duties including, among others, designing and constructing four nuclear power generation units each with a capacity of 1,400 megawatts, supplying nuclear fuel for three fuel cycles including initial loading, with each cycle currently projected to last for approximately 18 months, and providing technical support, training and education related to plant operation. The contract amount for the project is US$18.6 billion, with the term of the contract to last from December 27, 2009 to May 1, 2020. The original target completion dates for the four units are May 2017, May 2018, May 2019 and May 2020. ENEC and we are currently negotiating to adjust the target completion dates, taking into account the preparation for operation of Unit #1 and UAE’s power supply and demand conditions.

On October 20, 2016, in order to foster a long-term strategic partnership and stable management of the units post-construction we entered into an investment agreement with ENEC to jointly establish Barakah One PJSC, a special purpose company which will oversee the operation and management of the nuclear power plant currently being constructed in Barakah, United Arab Emirates. Barakah One PJSC will be capitalized with loans in the amount of US$19.6 billion and equity of US$4.7 billion. We have a 18% equity interest in Barakah One PJSC, which will oversee the project. We also have a 18% equity interest in Nawah Energy, a subsidiary of ENEC, which will also be responsible for the operation and maintenance of the Barakah nuclear power plant.

Non-nuclear Generation Projects

We are currently engaged in three major power projects in the Philippines: (i) a “build, operate and transfer” of a1,200-megawatt combined-cycle power plant project in Ilijan, construction of which began in November

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1997 and was completed in June 2002 and which is being operated by us until 2022 (the project cost of the Ilijan project was US$721 million, for which project finance on a limited recourse basis was provided), (ii) ownership of a 39.6% equity interest in SPC Power Corporation, an independent power producer which owns a107.8-megawatt diesel power plant and a 39.6% equity interest in two distribution companies in the Philippines, and (iii) a “build, operate and own” of a200-megawatt CFBC coal power plant in Cebu for which construction began in February 2008 and was completed in May 2011, followed by operation thereof until 2036. The project cost of the Cebu project was US$451 million, for which project financing on a limited recourse basis was provided.

In April 2007, we formed a limited partnership with Shanxi International Electricity Group and Deutsche Bank in China to develop and operate power projects and coal mines in Shanxi province, China, which was approved by the Chinese government. The total capital investment in these projects amounted to US$1.33 billion, of which our capital investment was US$450 million. We are expected to participate in the operation of the project for a period of 50 years ending 2056. The total installed capacity of these projects is 6,532 megawatts and capacity under construction was 2,288 megawatts, and our equity interest in the partnership was 34%.

In October 2007, we invested US$9.1 million in KEPCO Energy Resource Nigeria Ltd. (“KERNL”), a joint venture with Energy Resource Ltd., a Nigerian company. We currently own 30.0% of KERNL’s equity capital. In May 2007, KERNL entered into a share purchase agreement with the Nigerian government for the purchase of 70% of the equity capital of Egbin Power Plc in Nigeria, which owns and operates the Egbin power plant, a1,320-megawattgas-fired power plant in Lagos, Nigeria for a consideration of approximately US$407 million. The acquisition was completed in October 2013, and in June 2013, we entered into a contract with Egbin Power Plc for the operation and maintenance of the Egbin power plant. The contract price was US$315 million. In November 2013, we commenced operation and maintenance services for a term of five years, which will expire in October 2018.

In July 2008, a consortium consisting of us and Xenel of Saudi Arabia won the bid to “build, own and operate” agas-fired power plant with installed capacity of 373 megawatts in Al Qatrana, near Amman, and we entered into definitive agreements in October 2009. Construction of this project was completed in December 2011, and the plant is currently in operation and will be operation until 2035. The total project cost was US$461 million, of which the consortium made an equity contribution of US$143 million and the remainder was funded with debt financing. We and Xenel own 80:20 equity interests in the project, respectively.

In December 2008, we formed a consortium with ACWA Power International of Saudi Arabia and submitted a bid for the 1,204 megawattoil-fired power project in Rabigh, Saudi Arabia. In March 2009, we were selected as the preferred bidder, and in July 2009, we entered into a power purchase agreement with Saudi Electricity Company. Construction of the project was completed in April 2013, and we will participate in the operation of the plant for 20 years. This project has an estimated project cost of US$2.5 billion. We currently hold a 40.0% equity interest in the joint venture entity, Rabigh Electricity Company, which will oversee the project.

In August 2010, a consortium led by us was selected as the preferred bidder in an international auction for the construction and operation of the Norte IIgas-fueled combined-cycle electricity generation facility in Chihuahua, Mexico, as ordered by the Commission Federal de Electricidad (“CFE”) of Mexico. The consortium established a special purpose vehicle, KST Electric Power Company (“KST”), to act as the operating entity, and in September 2010, KST entered into a power purchase agreement with CFE in relation to the construction and operation of a433-megawatt combined-cycle power plant at Chihuahua in Mexico. In October 2010, KST was licensed by the Mexican government as an independent power producer, which allows it to produce and sell electricity to CFE during the specified contract period. The project will be undertaken on a “build, own and operate” basis. The total cost of the project is approximately US$430 million. We hold a 56% equity interest in the consortium, with the remaining equity interests held by Samsung C&T (with a 34% equity interest) and Techint, a Mexico company (with a 10% equity interest). Approximately 22.5% of the total project costs is being

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financed through equity investments by the consortium and the remaining 77.5% through project financing. Commercial operation commenced in December 2013, and the operation period will run for 25 years until 2038. Our wholly-owned subsidiary, KEPCO Energy Service Company, currently manages the operation of the project.

In October 2010, a consortium including us was selected by Abu Dhabi Water & Electricity Authority (“ADWEA”), astate-run utilities provider in the UAE, as the preferred bidder in an international bidding for the construction and operation of the combined-cycle naturalgas-fired electricity generation facilities in Shuweihat, UAE with aggregate capacity of 1,600 megawatts. Construction was completed in July 2014 and we will participate in the operation of the plant until 2039. The total project cost is estimated to be US$1.5 billion, of which approximately 20% will be financed through equity investments by the consortium members and the remaining 80% through project financing. Equity interests in the consortium are owned by ADWEA (60.0%), Sumitomo (20.4%) and us (19.6%). The total amount of our equity investment in the project is approximately US$56 million.

In January 2012, a consortium consisting of us, Mitsubishi Corporation and Wartsila Development & Financial Services of Finland was selected by National Electric Power Corporation, astate-run electricity provider in Jordan, to construct and operate a diesel engine power project in Almanakher with an expected total generation capacity of 573 megawatts. Construction of this project was completed in October 2014 and the plant is currently in operation and will be operation until 2039. The total project cost was approximately US$760 million, of which the consortium made an equity contribution of approximately US$190 million and the remainder was funded with debt financing. We, Mitsubishi Corporation and Wartsila Development & Financial Services own 60:35:5 equity interests in the project, respectively. Our equity investment in this project is US$104 million.

In March 2013, a consortium consisting of us and Marubeni, a Japanese corporation, was selected by the Ministry of Industry and Trade of Vietnam for the construction and operation of a 1,200 megawatt coal-fired power plant in Thanh Hoa province, Vietnam. We will commence construction in December 2017 with target completion by December 2021, followed by operation for 25 years. The total project cost is expected to be US$2.34 billion, of which 25% will be funded by equity contribution and the remaining 75% by debt financing. The share capital of the special purpose entity in charge of this project is US$574 million, and we and Marubeni each hold 50% equity interest in such entity.

Exploration and Production Projects

In order to secure a more reliable supply of fuel for power generation and hedge against fluctuations in fuel price, from 2007 to 2016 we pursued overseas exploration and production projects, including five bituminous coal projects and five uranium projects involving investments of approximately Won 1.6 trillion. However, pursuant to the Government’s Proposal for Adjustment of Functions of Public Institutions (Energy Sector) announced in June 2016, as of December 31, 2016, except for the Bylong project described below, we transferred all our assets and liabilities for our overseas resource business to our six generation subsidiaries, which are theend-consumers of fuels and are therefore expected to more responsively manage these projects. The amount of net assets that we transferred to our generation subsidiaries as of December 31, 2016 was Won 622 billion.

Some of the assets transferred include our equity interest in PT Adaro Energy TBK, which is one of the largest coal producers in Indonesia as well as our 20% equity interest in PT. Bayan Resources Tbk pursuant to which we were entitled to an off-take of 7 million tons per year beginning in 2015.

One exception to the transfers on such date was our 90% equity interest in KEPCO Bylong Pty Ltd., for which we are currently processing a development permit from the New South Wales government and commercial production is scheduled to commence in 2019. We transferred 10% of our equity interest in the Bylong project to our fivenon-nuclear generation subsidiaries as of December 31, 2016, and we plan to gradually transfer the remainder of our interest in the Bylong project to them subject to the progress of the regulatory approval process and resource development phase of the project.

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Our nuclear generation subsidiary, KHNP, is also pursuing development projects for procurements of uranium in countries including Canada, the United States and Niger.

Renewable Energy Projects

Our overseas renewable energy projects include the generation of electricity through renewable energy sources.

Since 2005, joint ventures between us and China Datang Corporation of the People’s Republic of China have built and operated a number of wind farms in Inner Mongolia, Liaoning and Gansu provinces. We own 40% of these joint ventures, whose equity in the aggregate amount is approximately US$600 million. The projects are fundedone-third by equity contributions andtwo-thirds by debt financing. As of December 31, 2016, the joint venture operated 22 wind farms with a total capacity of 1,017 megawatts.

In December 2015, we entered into an agreement with the Ministry of Energy and Mineral Resources of Jordan to build, own and operate a wind farm with installed capacity of 89.1 megawatts in Fujeij, Ma’an, Jordan. Construction is currently underway with commercial operations expected to commence in October 2018. Total project cost is approximately US$184 million, of which 40% will be financed through equity investments by us and the remaining 60% through debt financing. We believe that this project will help us to further diversify our business portfolio in the Middle East from the existing focus on nuclear and thermal power plants to expand to renewable energy facilities.

In June 2015, we entered into a memorandum of understanding with Energy Product, a Japanese local developer, to build, own and operate photovoltaic power station with a capacity of 28 megawatts, together with a 13.7 megawatts-hour energy storage system, in Chitose, Hokkaido prefecture in Japan. The parties subsequently signed the joint development agreement and other definitive agreements. The power station is due for substantial completion by July 2017. Total project cost is approximately JPY 11.3 billion, of which 20% was financed through 80:20 equity investments by us and EP. The remaining 80% is funded through debt financing.

Although renewable energy projects are currently insignificant as a proportion of our total overseas activities and our generation activities, we expect the portion of renewable energy projects to increase in the future as we seek to penetrate the overseas renewable energy market, diversify our businesses and actively address climate change. We expect to further diversify our business in the renewable energy sector to also include smart transmission and distribution facilities, smart grids and utilization of new energy related technologies.

North Korea

Kaesong Complex

Since 2005, we have provided electricity to the industrial complex located in Kaesong, North Korea, which was established pursuant to an agreement made during the summit meeting of the two Koreas in June 2000. The Kaesong complex is the largest economic project between the two Koreas and is designed to combine the Republic’s capital and entrepreneurial expertise with the availability of land and labor of North Korea. In March 2005, we built a 22.9 kilovolt distribution line from Munsan substation in Paju, Gyeonggi Province to the Kaesong complex and became the first to supply electricity to pilot zones such as ShinWon Ebenezer. In April 2006, we started to construct a 154 kilovolt, 16 kilometer transmission line connecting Munsan substation to the Kaesong complex as well as Pyunghwa substation in the complex and began operations in May 2007.

At the end of 2015, we supplied electricity to 254 units, including administrative agencies, support facilities and resident corporations, using a tariff structure identical to that of South Korea. However, we suspended power transmission to the Kaesong Industrial Complex since February 11, 2016 following the Government’s decision to

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halt operations of the industrial complex to impede North Korea’s utilization of funds from the industrial complex to finance its nuclear and missile programs. No assurance can be given that we will not experience any material losses as a result of the suspension of this project or failure of the project as a result of a breakdown or escalation of hostilities in the relationship between the Republic and North Korea. See Item 3.D. “Risk Factors—Risks Relating to Korea and the Global Economy—Tensions with North Korea could have an adverse effect on us and the market value of our shares.”

Insurance

We and our generation subsidiaries carry insurance covering against certain risks, including fire, in respect of key assets, including buildings, equipment, machinery,construction-in-progress and procurement in transit, as well as, in the case of us, directors’ and officers’ liability insurance. We and our generation subsidiaries maintain casualty and liability insurance against risks related to our business to the extent we consider appropriate. Other than KHNP, neither we nor our generation subsidiaries separately insure against terrorist attacks. These insurance and indemnity policies, however, cover only a portion of the assets that we own and operate and do not cover all types or amounts of loss that could arise in connection with the ownership and operation of these assets.

Substantial liability may result from the operations of our nuclear generation units, the use and handling of nuclear fuel and possible radioactive emissions associated with such nuclear fuel. KHNP maintains property and liability insurance against risks of its business to the extent required by the related law and regulations or considered as appropriate and otherwise self-insures against such risks. KHNP carries insurance for its generation units against certain risks, including property damage, nuclear fuel transportation and liability insurance for personal injury and property damage. KHNP carries property damage insurance covering up to US$1 billion per accident for all properties within its plant complexes, which includes property insurance coverage for acts of terrorism up to US$300 million and for breakdown of machinery up to US$300 million. In addition to the insurance on operating nuclear power generation units, KHNP has construction insurance for Shin-Kori #4, #5 and #6 and Shin-Hanul #1 and #2. KHNP maintains nuclear liability insurance for personal injury and third-party property damage for coverage of up to 300 million Special Drawing Rights, or SDRs, which amounts to approximately US$418 million, at the rate of 1 SDR = US$1.393380 as posted on the Internet homepage of the International Monetary Fund on July 29, 2016 per plant complex, for a total coverage of 1.5 billion SDRs. KHNP is also the beneficiary of a Government indemnity with respect to such risks for damage claims of up to Won 300 million SDRs per nuclear plant complex, for a total coverage of 1.5 billion SDRs. Under the Nuclear Damage Compensation Act of 1969, as amended, KHNP is liable only up to 300 million SDRs, per single accident per plant complex; provided that such limitation will not apply where KHNP intentionally causes harm or knowingly fails to prevent the harm from occurring. KHNP will receive the Government’s support, subject to the approval of the National Assembly, if (i) the damages exceed the insurance coverage amount of 300 million SDRs and (ii) the Government deems such support to be necessary for the purposes of protecting damaged persons and supporting the development of nuclear energy business. KHNP carries insurance for its generation units and nuclear fuel transportation, and we believe that the level of insurance is generally adequate and is in compliance with relevant laws and regulations. In addition, KHNP is the beneficiary of Government indemnity which covers a portion of liability in excess of the insurance. However, such insurance is limited in terms of amount and scope of coverage and does not cover all types or amounts of losses which could arise in connection with the ownership and operation of nuclear plants. Accordingly, material adverse financial consequences could result from a serious accident or a natural disaster to the extent it is neither insured nor covered by the government indemnity. See Item 3.D. “Risk Factors—Risks Relating to KEPCO—The amount and scope of coverage of our insurance are limited.”

Competition

As of December 31, 2016, we and our generation subsidiaries owned approximately 74.7% of the total electricity generation capacity in Korea (excluding plants generating electricity for private or emergency use). New entrants to the electricity business will erode our market share and create significant competition, which could have a material adverse impact on our financial condition and results of operations.

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In particular, we compete with independent power producers with respect to electricity generation. The independent power producers accounted for 19.3% of total power generation in 2016 and 25.3% of total generation capacity as of December 31, 2016. As of December 31, 2016, there were 17 independent power producers in Korea, excluding renewable energy producers. Private enterprises became permitted to own and operate coal-fired power plants in Korea only after the Ministry of Trade, Industry and Energy approved plans for independent power producers to construct coal-fired power plants under the Sixth Basic Plan announced in February 2013. Under the Seventh Basic Plan announced in July 2015 as subsequently amended, eight coal-fired units with aggregate generation capacity of 7,420 megawatts are scheduled to be completed between 2017 and 2022, currently with no further plans for construction of coal-fired power plants by independent power producers beyond 2022. While it remains to be seen whether construction of these generation units will be completed as scheduled, if these units were to be completed as scheduled and/or independent power producers are permitted to build additional generation capacity (whether coal-fired or not), our market share in Korea may decrease, which may have a material adverse effect on our results of operations and financial condition.

In addition, under the Community Energy System adopted by the Government in 2004, a minimal amount of electricity is supplied directly to consumers on a localized basis by independent power producers outside the cost-based pool system used by our generation subsidiaries and most independent power producers to distribute electricity nationwide. The purpose of this system is to geographically decentralize electricity supply and thereby reduce transmission losses and improve the efficiency of energy use. These entities do not supply electricity on a national level but are licensed to supply electricity on a limited basis to their respective districts under the Community Energy System. As of March 31, 2017, the aggregate generation capacity of suppliers participating in the Community Energy System amounted to less than 1% of that of our generation subsidiaries in the aggregate. We currently do not expect the Community Energy System to be widely adopted, especially in light of the significant level of capital expenditure required for such direct supply. However, if the Community Energy System is widely adopted, it may erode our currently dominant market position in the generation and distribution of electricity in Korea and may have a material adverse effect on our business, results of operations and financial condition.

Our market dominance in the electricity distribution in Korea also may face potential erosion in light of the recent Proposal for Adjustment of Functions of Public Institutions (Energy Sector) announced by the Government in June 2016. This proposal contemplates a gradual opening of the electricity trading market to the private sector although no detailed roadmap has been provided for such opening. It is currently premature to predict to what extent, or in what direction, the liberalization of the electricity trading market will happen. Nonetheless, any significant liberalization of the electricity trading market may result in substantial reduction of our market share in electricity distribution in Korea, which would have a material adverse effect on our business, results of operation and cash flows.

The electric power industry, which began its liberalization process with the establishment of our power generation subsidiaries in April 2001, may become further liberalized in accordance with the Restructuring Plan. See Item 4.B. “Business Overview—Restructuring of the Electric Power Industry in Korea.”

In the residential sector, consumers may use natural gas, oil and coal for space and water heating and cooking. However, currently there is no practical substitute for electricity for lighting and other household appliances, which is available on commercially affordable terms.

In the commercial sector, electricity is the dominant energy source for lighting, office equipment and air conditioning. For its other uses, such as space and water heating, natural gas and, to a lesser extent, oil, provide competitive alternatives to electricity.

In the industrial sector, electricity is the dominant energy source for a number of industrial applications, including lighting and power for many types of industrial machinery and processes that are available on commercially affordable terms. For other uses, such as heating, electricity competes with oil and natural gas and potentially withgas-fired combined heating and power plants.

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Regulation

We are a statutory juridical corporation established under the KEPCO Act for the purpose of ensuring a stable supply of electric power and further contributing toward the sound development of the national economy through facilitating development of electric power resources and carrying out proper and effective operation of the electricity business. The KEPCO Act (including the amendment thereto) prescribes that we engage in the following activities:

1. development of electric power resources;

2. generation, transmission, transformation and distribution of electricity and other related business activities;

3. research and development of technology related to the businesses mentioned in items 1 and 2;

4. overseas businesses related to the businesses mentioned in items 1 through 3;

5. investments or contributions related to the businesses mentioned in items 1 through 4;

6. businesses incidental to items 1 through 5;

7. Development and operation of certain real estate held by us to the extent that:

a. it is necessary to develop certain real estate held by us due to external factors, such as relocation, consolidation, conversion to indoor or underground facilities or deterioration of our substation or office; or

b. it is necessary to develop certain real estate held by us to accommodate development of relevant real estate due to such real estate being incorporated into or being adjacent to an area under planned urban development; and

8. other activities entrusted by the Government.

The KEPCO Act currently requires that our profits be applied in the following order of priority:

• first, to make up any accumulated deficit;

• second, to set aside 20.0% or more of profits as a legal reserve until the accumulated reserve reachesone-half of our capital;

• third, to pay dividends to shareholders;

• fourth, to set aside a reserve for expansion of our business;

• fifth, to set aside a voluntary reserve for the equalization of dividends; and

• sixth, to carry forward surplus profit.

As of December 31, 2016, the legal reserve was Won 1,605 billion and the voluntary reserve was Won 31,847 billion, which consisted of reserve for business expansion of Won 26,030 billion, reserve for investment in social overhead capital of Won 5,277 billion, reserve for research and human development of Won 330 billion and reserve for equalizing dividends of Won 210 billion.

We are under the supervision of the Ministry of Trade, Industry and Energy, which has principal supervisory responsibility (in consultation with other Government agencies, such as the Ministry of Strategy and Finance, as applicable) over us with respect to the appointments of our directors and our other senior management as well as approval of electricity tariff rate adjustments, among others.

Because the Government owns part of our capital stock, the Government’s Board of Audit and Inspection may audit our books.

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The Electricity Business Act requires that licenses be obtained in relation to generation, transmission, distribution and sales of electricity, with limited exceptions. We hold the license to generate, transmit, distribute and sell electricity. Each of our six generation subsidiaries holds an electricity generation license. The Electricity Business Act governs the formulation and approval of electricity rates in Korea. See “—Sales and Customers—Electricity Rates” above.

Our operations are subject to various laws and regulations relating to environmental protection and safety.

Debt Reduction Program and Related Activities

In 2014, in light of the general policy guideline of the Government for public institutions (including us and our generation subsidiaries) to reduce their respective overall debt levels, we and our generation subsidiaries have, in consultation with the Ministry of Trade, Industry and Energy and as approved by the Public Agencies Operating Committee in June 2014, set targetdebt-to-equity levels to be met by the end of 2017 and undertaken various programs to reduce debt and improve the overall financial health, including through rationalizing and applying stricter review to (from a profitability and efficiency perspective) various aspects of our operations (both domestic and overseas), inviting private sector investments, disposing ofnon-core assets (such asnon-core or loss-generating overseas operations and real property unrelated to operations), reducing costs, exploring alternative ways to generate additional revenue and developing contingency plans for further cost savings.

The following table summarizes thedebt-to-equity ratio targets to be met by the end of 2017 and some of the actions that we and our generation subsidiaries have undertaken or plan to undertake as part of such debt reduction program.

Entity	Target Debt-to- Equity Level(1)	Actual Debt-to-Equity Level(1)	Other Related Activities
KEPCO	92% by 2017	99.9% as of December 31, 2015; 89.9% as of December 31, 2016	-   Proposed sale of shares in KPS -   Sale of its overseas resource development assets to its generation subsidiaries
KHNP	110% by 2017	117% as of December 31, 2015; 108% as of December 31, 2016	-   Stricter review of new business projects -   Rationalization of the procurement process and other budget reduction efforts
EWP	107% by 2017	121% as of December 31, 2015; 101% as of December 31, 2016	-   Proposed sale of shares in GS Donghae Electric Power Co., Ltd. and six other domestic and overseas companies
KOMIPO	170% by 2017	149% as of December 31, 2015; 152% as of December 31, 2016	-   Construction project coordination -   Cost savings and other efficiency improvement efforts
KOSEP	129% by 2017	111% as of December 31, 2015;101% as of December 31, 2016	-   Cost savings and budget reduction efforts -   Discovering new business profit models
KOSPO	143% by 2017	150% as of December 31, 2015; 139% as of December 31, 2016	-   Proposed sale of real properties that yield no revenues
KOWEPO	153% by 2017	164% as of December 31, 2015; 150% as of December 31, 2016	-   Proposed sale of equity interests in Dongducheon Dream Power -   Obtaining private sector investment in Pyeongtaek combined cycle #3 -   Accelerated construction of generation units

Note:

(1) Computed on a separate basis for KEPCO, EWP, and KOSPO.

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Despite our best efforts, however, for reasons beyond our control, including macroeconomic environments, government regulations and market forces (such as international market prices for our fuels), we cannot assure whether we or our generation subsidiaries will be able to successfully reduce debt burdens or otherwise improve our financial health to a level contemplated by the Government or to a level that would be optimal for our capital structure. If we or our generation subsidiaries fail to do so or the measures taken by us or our generation subsidiaries to reduce debt levels or improve financial health have unintended adverse consequences, such developments may have an adverse effect on our business, results of operations and financial condition.

Proposed Sale of Certain Power Plants and Equity Interests

The following table summarizes our current plans for sale of certain of our assets. These sales will be made pursuant to the Government’s plans to reduce debt levels and improve management efficiency of public enterprises. The consummation of these plans, however, is subject to, among others, related Government policies and market conditions.

Equity Holdings	Primary Business	Fair  Value(1) as of December 31, 2016		Ownership Percentage as of December 31, 2016			Ownership Percentage to  be Sold
		(in billions of Won)
KEPCO Plant Service & Engineering Co., Ltd	Utility plant maintenance		1,244		51.0	%		—
KEPCO Engineering & Construction Co., Inc.	Architectural engineering for utility plants		595		65.77	%		14.77	%
Korea Electric Power Industrial Development Co., Ltd.	Electricity metering		45		29.00	%		29.00	%

Note:

(1) Fair value has been computed as the product of the closing share price on December 31, 2016 multiplied by the number of outstanding shares.

KEPCO Plant Service & Engineering Co., Ltd.

In December 2007, we completed the initial public offering of KEPCO KPS, formerly our wholly-owned subsidiary, by listing approximately 20.0% of its equity interest on the Korea Stock Exchange. Pursuant to the Public Institution Reform Plan, we sold through block sales to third party investors an aggregate of 29% shares in KEPCO KPS on various occasions during the period from December 2012 to November 2016. Following such sale, we hold a 51.0% equity interest in KEPCO KPS. We currently do not have plans to further reduce our equity interest in KEPCO KPS.

KEPCO Engineering & Construction Co., Inc.

Pursuant to the Third Phase of the Public Institution Reform Plan announced by the Government in August 2008, we conducted the initial public offering of Korea Engineering and Construction Co., Inc., or KEPCO E&C formerly known as Korea Power Engineering Co., Ltd., in December 2009 for gross proceeds to us of Won 165 billion, following which we owned 77.9% of KEPCO E&C’s shares. In furtherance of the Public Institution Reform Plan and to improve our financial profile, we sold our equity interests representing 3.1%, 4.0%, 4.5% and 0.54% of KEPCO E&C shares in November 2011, December 2013, December 2014 and December 2016, respectively, in each case to third party investors. We currently hold a 65.77% equity interest in KEPCO E&C.

Korea Electric Power Industrial Development Co., Ltd.

In 2003, we privatized Korea Electric Power Industrial Development, or KEPID, formerly our wholly-owned subsidiary, by selling 51.0% of its equity interest to Korea Freedom Federation. Pursuant to the Fifth

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Phase of the Public Institution Reform Plan announced by the Government in 2009, we sold 20% of the KEPID shares through additional listing. We currently plan to sell the remaining 29.0% of KEPID’s equity interest based on, among others, considerations of economic and market conditions.

Item 4.C. Organizational Structure

As of December 31, 2016, we had 87 subsidiaries, 57 associates and 41 joint ventures (not including any special purpose entities).

Subsidiaries

Our wholly-owned six generation subsidiaries are KHNP, KOSEP, KOMIPO, KOWEPO, KOSPO and EWP. Ournon-generation subsidiaries include KEPCO E&C, KEPCO KPS, KEPCO NF, and KEPCO KDN. For a full list of our subsidiaries, including foreign subsidiaries, and their respective jurisdiction of incorporation, please see Exhibit 8.1 attached to this annual report.

Associates and Joint Ventures

An associate is an entity over which we have significant influence and that is neither a subsidiary nor a joint venture. Significant influence is the power to participate in the financial and operating policy decisions of the investee but does not have control or joint control over those policies. A joint venture is a joint arrangement whereby the parties that have joint control of the arrangement (i.e. joint ventures) have rights to the net assets of the arrangement.

The table below sets forth each of our associates and joint ventures as of December 31, 2016 by name, the percentage of our shareholdings and their principal activities.

	Ownership (Percent)		Principal Activities
Associates:
Korea Gas Corporation(1)		20	Importing and wholesaling LNG
Korea Electric Power Industrial Development Co., Ltd.		29	Electricity metering
YTN Co., Ltd.		21	Broadcasting
Cheongna Energy Co., Ltd.		44	Generating and distributing vapor and hot/cold water
Gangwon Wind Power Co., Ltd.(2)		15	Power generation
Hyundai Green Power Co., Ltd.		29	Power generation
AMEC Partners Korea Ltd.(3)		19	Resources development
KNOC Nigerian East Oil Co., Ltd.(4)		15	Resources development
KNOC Nigerian West Oil Co., Ltd. (4)		15	Resources development
Korea Power Exchange(6)		100	Management of power market
Pioneer Gas Power Limited(8)		40	Power generation
Hyundai Energy Co., Ltd.(9)		31	Power generation
Ecollite Co., Ltd.		36	Artificial light-weight aggregate
Taebaek Wind Power Co., Ltd.		25	Power generation
Taeback Guinemi Wind Power Co., Ltd. (formerly, Muju Wind Power Co., Ltd.)		25	Power generation
Pyeongchang Wind Power Co., Ltd.		25	Power generation
Daeryun Power Co., Ltd.(3)(10)		13	Power generation
Changjuk Wind Power Co., Ltd.		30	Power generation
KNH Solar Co., Ltd.		27	Power generation

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	Ownership (Percent)		Principal Activities
SPC Power Corporation		38	Power generation
Gemeng International Energy Co., Ltd.		34	Power generation
PT. Cirebon Electric Power		28	Power generation
PT Wampu Electric Power		46	Power generation
PT. Bayan Resources TBK		20	Resources development
S-Power Co., Ltd.		49	Power generation
Eurasia Energy Holdings		40	Power generation and resources development
Xe-PianXe-Namnoy Power Co., Ltd.		25	Power generation
Samcheok Eco Materials Co., Ltd.(3) (11)		2	Recycling fly ashes
Green Biomass Co., Ltd.(12)		14	Power generation
Korea Electric Power Corporation Fund(13)		98	Developing electric enterprises
Nepal Water & Energy Development Company Private Limited(14)		53	Construction and operation of utility plant
Hadong Mineral Fiber Co., Ltd.(17)		8	Recycling fly ashes
PT. Mutiara Jawa		29	Manufacturing and operating floating coal terminal
Noeul Green Energy Co., Ltd.		29	Power generation
Naepo Green Energy Co., Ltd.		25	Power generation
Goseong Green Energy Co., Ltd.(2)		1	Power generation
Gangneung Eco Power Co., Ltd.(2)		2	Power generation
Shin Pyeongtaek Power Co., Ltd.		40	Power generation
Heang Bok Do Si Photovoltaic Power Co., Ltd.		28	Power generation
DS POWER Co., Ltd.(2)		14	Power generation
Dongducheon Dream Power Co., Ltd.		34	Power generation
KS Solar Co., Ltd.(3)		19	Power generation
Yeongwol Energy Station Co., Ltd.(2)		10	Power generation
Jinbhuvish Power Generation Pvt. Ltd.(2)		5	Power generation
SE Green Energy Co., Ltd.		48	Power generation support
Daegu Photovoltaic Co., Ltd.		29	Power generation
Jeongam Wind Power Co., Ltd.		40	Power generation
Korea Power Engineering Service Co., Ltd.		29	Construction and service
Busan Green Energy Co., Ltd.		29	Power generation
Jungbu Bio Energy Co., Ltd.(2)		19	Power generation
Korea Electric Vehicle Charging Service		28	Electric vehicle charge service
Ulleungdo Natural Energy Co., Ltd.		30	Renewable power generation
Korea Nuclear Partners Co., Ltd.		29	Electric material agency
Tamra Offshore Wind Power Co., Ltd.		27	Power generation
Energy Infra Asset Management Co., Ltd.(3)		10	Asset management
Daegu clean Energy Co., Ltd.		28	Renewable power generation
YaksuESS Co., Ltd		29	Installing ESS related equipment
Joint Ventures:
Canada Korea Uranium Limited Partnership(5)		13	Resources development
KEPCO-Uhde Inc.(7)		53	Power generation
Eco Biomass Energy Sdn. Bhd.(7)		62	Power generation
Datang Chaoyang Renewable Power Co., Ltd.		40	Power generation
Shuweihat Asia Power Investment B.V.		49	Holding company
Shuweihat Asia Operation & Maintenance Company(7)		55	Maintenance of utility plant
Waterbury Lake Uranium L.P.		37	Resources development

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	Ownership (Percent)		Principal Activities
ASM-BG Investicii AD		50	Power generation
RES Technology AD		50	Power generation
KV Holdings, Inc.		40	Power generation
KEPCO SPC Power Corporation(7)		75	Construction and operation of utility plant
Gansu Datang Yumen Wind Power Co., Ltd.		40	Power generation
Datang Chifeng Renewable Power Co., Ltd.		40	Power generation
Datang KEPCO Chaoyang Renewable Power Co., Ltd.		40	Power generation
Rabigh Electricity Company		40	Power generation
Rabigh Operation & Maintenance Company		40	Maintenance of utility plant
Jamaica Public Service Company Limited		40	Power generation
KW Nuclear Components Co., Ltd.		45	Manufacturing
Busan Shinho Solar Power Co., Ltd.		25	Power generation
GS Donghae Electric Power Co., Ltd.		34	Power generation
Global Trade Of Power System Co., Ltd.		29	Exporting products and technology of small or medium business by proxy
Expressway Solar-light Power Generation Co., Ltd.		29	Power generation
KODE NOVUS I LLC		50	Power generation
KODE NOVUS II LLC		50	Power generation
Daejung Offshore Wind Power Co., Ltd.		50	Power generation
Amman Asia Electric Power Company(7)		60	Power generation
KAPES, Inc. (formerly, KEPCO-ALSTOM Power Electronics Systems, Inc.)(7)		51	R&D
Dangjin Eco Power Co., Ltd.		34	Power generation
Honam Wind Power Co., Ltd.		29	Power generation
Chun-cheon Energy Co., Ltd.		30	Power generation
Yeonggwangbaeksu Wind Power Co., Ltd.(3)		15	Power generation
Nghi Son 2 Power Ltd.		50	Power generation
Kelar S.A(7)		65	Power generation
PT. Tanjung Power Indonesia		35	Power generation
Incheon New Power Co., Ltd.		29	Power generation
Seokmun Energy Co., Ltd.		29	Power generation
Daehan Wind Power PSC		50	Power generation
Daegu Green Power Co., Ltd.(15)		29	Power generation
Barakah One Company(16)		18	Power generation
Nawah Energy Company(16)		18	Operation of utility plant
Momentum		33	International thermonuclear experimental reactor construction management

Notes:

(1) The effective percentage of ownership (excluding the treasury stocks) is 21.57%.

(2) We can exercise significant influence by virtue of our contractual right to appoint directors to the board of directors of this entity, and by strict decision criteria of our financial and operating policy of the board of directors.

(3) We can exercise significant influence by virtue of our contractual right to appoint a director to the board of directors of this entity.

(4) We can exercise significant influence by virtue of our contractual right to appoint one out of four members of the steering committee of this entity. Moreover, we have significant financial transactions with this entity to the effect that we can exercise significant influence on this entity.

(5) We have joint control on the associates by virtue of our contractual right to appoint directors to the board of directors of this entity, and by strict decision criteria of our financial and operating policy of the board of directors.

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(6) The Government regulates our ability to make operating and financial decisions over the entity, as the Government requires maintaining arms-length transactions between the Korea Power Exchange and our other subsidiaries. We can exercise significant influence by our right to nominate directors to the board of directors of this entity.

(7) According to the shareholder agreement, all critical financial and operating decisions must be agreed to by all ownership parties. For these reasons, these entities are classified as joint ventures.

(8) The reporting period of all associates and joint ventures ends in December 31, except for Pioneer Gas Power Limited whose reporting period ends on March 31.

(9) As of December 31, 2016, 15.64% of ownership of Hyundai Energy Co., Ltd. was held by NH Power II Co., Ltd. and NH Bank. According to the shareholders’ agreement reached on March 2011, not only do we have a call option to acquire the investment in Hyundai Energy Co., Ltd. from NH Power II Co., Ltd. and NH Bank upon a certain rate of return, NH Power II Co., Ltd. and NH Bank also have put options to dispose of their investment to us. In connection with this agreement, we applied the equity method on our 46.30% equity investment in Hyundai Energy Co., Ltd.

(10) Following the merger of Daeryun Energy Co., Ltd. into Daeryun Power Co., Ltd., its parent, our effective percentage of ownership decreased to 19.45% after accounting for stock purchase options.

(11) Our effective percentage of ownership (excluding the redeemable convertible preferred shares) is 25.54%.

(12) Our effective percentage of ownership is less than 20%, but we can exercise significant influence by virtue of our contractual right to appoint a director to the board of directors of this entity and the fact that a dominant portion of the investee’s sales transactions is generated from us.

(13) Our effective percentage of ownership is more than 50% but we do not hold control over relevant business while we exercise significant influence by participating in the Investment Decision Committee. For this reason, this entity is classified as an associate.

(14) Our effective percentage of ownership is more than 50%, but we do not control this entity according to the shareholders’ agreement. For this reason, this entity is classified as an associate.

(15) This entity is reclassified from associates to joint ventures since the terms of the shareholders’ agreement had been amended.

(16) Our effective percentage of ownership is less than 20%, but we have joint control over this entity as decisions on the major activities require the unanimous consent of the parties that collectively control the entity.

(17) Although our percentage of ownership temporarily decreased to 8.33% from the difference in timing of capital payment by shareholders, we can exercise significant influence by virtue of our right to appoint a director to the board of directors of this entity based on the shareholders’ agreement. Our percentage of ownership is 25.00% at the time of completion of capital payment.

Item 4.D. Property, Plant and Equipment

Our property consists mainly of power generation, transmission and distribution equipment and facilities in Korea. See Item 4.B. “Business Overview—Power Generation,” “—Transmission and Distribution” and “—Capital Investment Program.” In addition, we own our corporate headquarters building complex at 55Jeollyeok-ro,Naju-si, Jeollanam-do, 58217, Korea. As of December 31, 2016, the net book value of our property, plant and equipment was Won 145,743 billion. As of December 31, 2016, investment property, which is accounted for separately from our property, plant and equipment, amounted to Won 354 billion. No significant amount of our properties is leased. There are no material encumbrances on our properties, including power generation, transmission and distribution equipment and facilities.

Pursuant to a Government plan announced in 2005, which mandated relocation of the headquarters of select government-invested enterprises from the Seoul metropolitan area to other provinces in Korea as part of an initiative to foster balanced economic growth in the provinces, we, our generation subsidiaries and our certain subsidiaries relocated our respective headquarters to the designated locations during 2014 and 2015. Our headquarters are currently located in Naju in Jeollanam-do Province while the headquarters of our six generation subsidiaries and other subsidiaries are various cities outside of Seoul across Korea.

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In connection with the relocation of our headquarters, in September 2014 we entered into an agreement to sell the property housing our prior headquarters to a consortium consisting of members of the Hyundai Motor group for Won 10,550 billion through an open bidding. The sale was completed in September 2015.

During 2016,we completed the sales of 117 properties (including residential properties, storage spaces, and substation lots that are located in Korea) which are not directly related to our operations for an aggregate sale price of approximately Won 36 billion. The book value of such properties amounted to Won 18 billion, representing 0.2% of our total assets as of December 31, 2016. The foregoing sales reflect our ongoing efforts to improve our financial soundness through debt reduction and enhance our management efficiency, selling noncore properties that have no direct relations to electricity facilities.

ITEM 4A. UNRESOLVED STAFF COMMENTS

We do not have any unresolved comments from the SEC staff regarding our periodic reports under the Securities Exchange Act of 1934, as amended (the “Exchange Act”).

ITEM 5. OPERATING AND FINANCIAL REVIEW AND PROSPECTS

You should read the following discussion on our operating and financial review and prospects together with our consolidated financial statements and the related notes which appear elsewhere in this annual report. Our results of operations, financial condition and cash flows may materially change from time to time, for reasons including various policy initiatives (including changes to the Restructuring Plan) by the Government in relation to the Korean electric power industry, and accordingly our historical performance may not be indicative of our future performance. See Item 4.B. “Business Overview—Restructuring of the Electric Power Industry in Korea” and Item 3D. “Risk Factors—The Government may adopt policy measures to substantially restructure the Korean electric power industry or our operational structure, which may have a material adverse effect on our business, operations and profitability.”

Item 5.A. Operating Results

Overview

We are a predominant market participant in the Korean electric power industry, and our business is heavily regulated by the Government, including with respect to the rates we charge to customers for the electricity we sell. In addition, our business requires a high level of capital expenditures for the construction of electricity generation, transmission and distribution facilities and is subject to a number of variable factors, including demand for electricity in Korea and fluctuations in fuel costs, which are in turn impacted by the movements in the exchange rates between the Won and other currencies.

Under the Electricity Business Act and the Price Stabilization Act, the Government generally establishes electricity rates at levels that are expected to permit us to recover our operating costs attributable to our basic electricity generation, transmission and distribution operations in addition to receiving a fair investment return on capital used in those operations. For a detailed description of the fair investment return, see Item 4.B. “Business Overview—Sales and Customers—Electricity Rates.” From 2014 to 2015, largely due to the general decline of fuel prices, relatively stable exchange rates,, the sale of the properties in our previous headquarters and the greater use of coal relative to LNG (the former being a cheaper source of fuel) as a proportion of the fuels used to produce electricity, our gross profit, operating profit and net profit increased significantly.

If fuel prices were to rise substantially and rapidly in the future, such rise may have a material adverse effect on our results of operations and profitability. In part to address these concerns, the Government from time to time increases the electricity tariff rates. However, such increases may be insufficient to fully offset the adverse impact from the rise in fuel costs, and since such increases typically require lengthy public deliberations in order

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to be implemented, the tariff increases often occur with a significant time lag and as a result our results of operations and cash flows may suffer. On the other hand, if fuel prices decrease, substantial political pressure may lead the Government to lower the level of electricity tariff in a relatively shorter period of time due to the lack of public opposition, which could negatively affect our profit margins and in turn our financial condition and results of operations.

The results of our operations are largely affected by the following factors:

• demand for electricity;

• electricity rates we charge to our customers;

• fuel costs; and

• the exchange rates of Won against other foreign currencies, in particular the U.S. dollar.

Demand for Electricity

Our sales are largely dependent on the level of demand for electricity in Korea and the rates we charge for the electricity we sell.

Demand for electricity in Korea grew at a compounded average rate of 1.6% per annum for the five years ended December 31, 2016. According to the Bank of Korea, the compounded growth rate for GDP was approximately 3.0% for the same period. The GDP growth rate was approximately 3.3%, 2.8% and 2.8% during 2014, 2015 and 2016, respectively.

The table below sets forth, for the periods indicated, the annual rate of growth in Korea’s GDP and the annual rate of growth in electricity demand (measured by total annual electricity consumption) on ayear-on-year basis.

	2012			2013			2014			2015			2016
Growth in GDP		2.3	%		2.9	%		3.3	%		2.8	%		2.8	%
Growth in electricity consumption		2.5	%		1.8	%		0.6	%		1.3	%		2.8	%

Demand for electricity may be categorized either by the type of its usage or by the type of customers. The following describes the demand for electricity by the type of its usage, namely, industrial, commercial and residential:

• The industrial sector represents the largest segment of electricity consumption in Korea. Demand for electricity from the industrial sector was 278,828 gigawatt hours in 2016, representing a 1.9% increase from 2015, largely due to the turnaround in industries such as semiconductors, chemicals and petrochemicals that are heavy users of electricity.

• Demand for electricity from the commercial sector depends largely on the level and scope of commercial activities in Korea, which in recent years have resulted in increased office building construction, office automation and use of air conditioners. Demand for electricity from the commercial sector increased to 108,617 gigawatt hours in 2016, representing a 4.8% increase from 2015 largely due to a rebound in the domestic economy and increased air conditioning use in commercial buildings during the summer.

• Demand for electricity from the residential sector is largely dependent on population growth and use of heaters, air conditioners and other electronic appliances. In 2016, we distributed electricity to approximately 22 million households, which represent substantially all of the households in Korea. Demand for electricity from the residential sector increased to 68,057 gigawatt hours in 2016, representing a 3.7% increase compared to 2015, largely due to the opening of new urban clusters with large-scale residential complexes as well as increased air conditioning use in residential buildings during the summer.

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For a discussion on demand by the type of customers, see Item 4.B.. “Business Overview—Sales and Customers—Demand by the Type of Usage.”

Since our inception, we have had the predominant market share in terms of electricity generated in Korea. As for electricity we purchase from the market for transmission and distribution to ourend-users, our generation subsidiaries accounted for 86.2%, 83.3% and 81.5% in 2014, 2015 and 2016, respectively, while the remainder was accounted for by independent power producers. As for transmission and distribution of electricity, we have historically handled, expect to continue to handle, substantially all of such activities in Korea.

We expect that we will continue to have a dominant market share in the generation, transmission and distribution of electricity in Korea for the foreseeable future, absent any substantial changes to the Restructuring Plan or other policy initiatives by the Government in relation to the Korean electric power industry, or an unexpected level of market penetration by independent power producers or localized electricity suppliers under the Community Energy System. However, our market dominance in the electricity distribution in Korea may face potential erosion in light of the recent Proposal for Adjustment of Functions of Public Institutions (Energy Sector) announced by the Government in June 2016. This proposal contemplates a gradual opening of the electricity trading market to the private sector although no detailed roadmap has been provided for such opening. It is currently premature to predict to what extent, or in what direction, the liberalization of the electricity trading market will happen. Nonetheless, any significant liberalization of the electricity trading market may result in substantial reduction of our market share in electricity distribution in Korea, which would have a material adverse effect on our business, results of operation and cash flows. See Item 4.B. “Business Overview—Competition.”

Electricity Rates

Under the Electricity Business Act and the Price Stabilization Act, electricity rates are established at levels that will permit us to recover our operating costs attributable to our basic electricity generation, transmission and distribution operations in addition to receiving a fair investment return on capital used in those operations. For further discussion of fair investment return, see Item 4.B. “Business Overview—Sales and Customers—Electricity Rates.”

From time to time, our actual rate of return on invested capital may differ significantly from the fair rate of return on invested capital assumed for the purposes of electricity tariff approvals, for reasons, among others, related to movements in fuel prices, exchange rates and demand for electricity that differs from what is assumed for determining our fair rate of return. For example, between 1987 and 1990, the actual rate of return was above the fair rate of return due to declining fuel costs and rising demand for electricity. In contrast, depreciation of the Won against the U.S. dollar accounted for our actual rates of return being lower than the fair rate of return for the period from 1996 to 2000. Partly in response to the variance between our actual rates of return and the fair rate of return, the Government from time to time increases the electricity tariff rates, but there typically is a significant time lag for the tariff increase as such increase requires a series of deliberative processes and administrative procedures and the Government also has to consider other policy considerations, such as the inflationary effect of overall tariff increases and the efficiency of energy use through sector-specific tariff increases. For the period between 2006 and 2013, our actual rates of return were lower than the fair rate of return largely due to a general increase in fuel costs and additional facility investment costs incurred, the effects of which were not offset by timely increases in our tariff rates. Since 2014, however, largely due to the decrease in fuel costs reflective of the drop in oil prices, our actual rate of return has surpassed the fair rate of return; however, substantially all of the resulting excess has been used to fund capital expenditure and repair and maintenance, as well as to offer tariff discounts to economically or otherwise disadvantaged households, and investments in renewable energy and other environmental programs.

Partly in response to the variance between our actual rates of return and the fair rates of return, the Government from time to time increases the electricity tariff rates, but there typically is a significant time lag for

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the tariff increases as such increases requires a series of deliberative processes and administrative procedures and the Government also has to consider other policy considerations, such as the inflationary effect of overall tariff increases and the efficiency of energy use from sector-specific tariff increases.

In the past, the Government effected tariff increases that typically covered all sectors, namely, residential, commercial and industrial. No cross-sector tariff increase has been implemented since November 2013, largely due to the downward trend in fuel costs.However, effective January 1, 2017, the Government made several adjustments to the existing rate structure in order to ease the burden of electricity tariff on residential consumers as well as promote the use of renewable energy. First, the progressive rate structure applicable to the residential sector, which applies a gradient of increasing tariff rates for heavier electricity usage, was changed from asix-tiered structure with the highest rate being no more than 11.7 times the lowest rate (which gradient system has been in place since 2005) into a three-tiered structure with the highest rate being no more than three times the lowest rate in order to reflect the changes in the pattern of electricity consumption and reduce the electricity charges payable by consumers. Second, the new tariff structure encourages energy saving by offering rate discounts to residential consumers that voluntarily reduce electricity consumption while charging special high rates to residential consumers with heavy electricity consumption during peak usage periods during the summer and the winter. Third, a temporary rate discount will apply during 2017 to 2019 to investments in environmentally friendly facilities such as energy storage systems, renewable energy and electric cars. Such adjustments may lower our revenues from the sale of electricity and accordingly have a material adverse effect on our results of operation, financial condition and cash flows.

Fuel Costs

Our results of operations are also significantly affected by the cost of producing electricity, which is subject to a variety of factors, including, in particular, the cost of fuel.

Cost of fuel in any given year is a function of the volume of fuels consumed and the unit fuel cost for the various types of fuel used for generation of electricity which affects the cost structure for both our generation subsidiaries and independent power producers from whom we purchase electric power. A significant change in the unit fuel costs materially impacts the costs of electricity generated by our generation subsidiaries, which mainly comprise our fuel costs under the cost of sales, as well as, to our knowledge, the costs of electricity generated by the independent power producers that sell their electricity to us (see Item 4.A. “Purchase ofElectricity—Cost-based Pool System”), which mainly comprise our purchased power costs under the cost of sales. We are however unable to provide a comparative analysis since the unit fuel cost information for independent power producers and their cost structures are proprietary information.

Fuel costs constituted 41.4%, 33.3% and 30.9% of our cost of sales, and the ratio of fuel costs to our sales was 36.1%, 25.9% and 23.4% in 2014, 2015 and 2016, respectively. Substantially all of the fuel (except for anthracite coal) used by our generation subsidiaries is imported from outside of Korea at prices determined in part by prevailing market prices in currencies other than Won. In addition, our generation subsidiaries purchase a significant portion of their fuel requirements under contracts with limited quantity and duration. Pursuant to the terms of our long-term supply contracts, prices are adjusted from time to time subject to prevailing market conditions. See Item 4.B. “Business Overview—Fuel.”

Uranium accounted for 35.3%, 38.1% and 37.1% of our fuel requirements in 2014, 2015 and 2016, respectively. Coal accounted for 46.0%, 47.9% and 47.7% of our fuel requirements in 2014, 2015 and 2016, respectively. LNG accounted for 15.5%, 10.7% and 10.8% of our fuel requirements in 2014, 2015 and 2016, respectively. Oil accounted for 1.7%, 2.2% and 3.0% of our fuel requirements in 2014, 2015 and 2016, respectively. In each case, the fuel requirements are measured by the amount of electricity generated by us and our generation subsidiaries and do not include electricity purchased from independent power producers. In order to ensure stable supplies of fuel materials, our generation subsidiaries enter into long-term and medium-term contracts with various suppliers and supplement such supplies with fuel materials purchased on spot markets.

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The price of bituminous coal, which represents our largest fuel requirement, fluctuates significantly from time to time. In 2016, approximately 82% of the bituminous coal requirements of our generation subsidiaries were purchased under long-term contracts and the remaining 18% purchased on the spot market. The average daily spot price of “free on board” Newcastle coal 6300 GAR published by Platts increased from US$58.0 per ton in 2015 to US$66.8 per ton in 2016 and to US$84.4 per ton as of April 13, 2017. If the price of bituminous coal were to sharply rise, our generation subsidiaries may not be able to secure their respective bituminous coal supplies at prices commercially acceptable to them. In addition, any significant interruption or delay in the supply of fuel, bituminous coal in particular, from any of their suppliers could cause our generation subsidiaries to purchase fuel on the spot market at prices higher than contracted, resulting in an increase in fuel cost.

From 2014 to 2016, the prices of oil and LNG fell significantly. The prices of oil and LNG are substantially dependent on the price of crude oil, and according to Bloomberg (Bloomberg Ticker: PGCRDUBA), the average daily spot price of Dubai crude oil declined from US$51.1 per barrel in 2015 to US$41.4 per barrel in 2016 but rebounded to US$54.2 per barrel as of April 14, 2017.

Nuclear power has a stable and relativelylow-cost structure and forms a significant portion of electricity supplied in Korea. Due to significantly lower unit fuel costs compared to those for thermal power plants, our nuclear power plants are generally operated at full capacity with only routine shutdowns for fuel replacement and maintenance, with limited exceptions. In case of shortage in electricity generation resulting from stoppages of the nuclear power plants, we seek to make up for such shortage with power generated by our thermal power plants.

Because the Government heavily regulates the rates we charge for the electricity we sell (see Item 4.B. “Business Overview—Sales and Customers—Electricity Rates”), our ability to pass on such cost increases to our customers is limited. For example, from 2008 to 2012 we had consecutive net losses and, from time to time, operating losses, largely due to sustained rises in fuel costs that were neither timely nor sufficiently offset by a corresponding rise in electricity tariff rates. If fuel prices substantially increase and the Government, out of concern for inflation or for other reasons, maintains the current level of electricity tariff and does not increase it to a level to sufficiently offset the impact of rising fuel prices, the price increases will negatively affect our profit margins or even cause us to suffer net losses and our business, financial condition, results of operations and cash flows would suffer.

Movements of the Won against the U.S. Dollar and Other Foreign Currencies

Korean Won has fluctuated significantly against major currencies from time to time. For fluctuations in exchange rates, see Item 3.A. “Selected Financial Data—Currency Translations and Exchange Rates.” In particular, Korean Won underwent substantial fluctuations during the recent global financial crisis, and remains subject to significant volatility. The Noon Buying Rate per one U.S. dollar increased from Won 1,090.9 on December 31, 2014 to Won 1,169.3 on December 31, 2015 and to Won 1,203.7 on December 31, 2016 and fell down to Won 1,136.7 on April 14, 2017. In 2015 and 2016, the Won generally depreciated against U.S. dollar and other foreign currencies, and such depreciation may result in a significant increase in the cost of fuel materials and equipment purchased from overseas as well as the cost of servicing our foreign currency debt. As of December 31, 2016, approximately 23.1% of our long-term debt (including the current portion but excluding issue discounts and premium) before accounting for swap transactions was denominated in foreign currencies, principally U.S. dollars. The prices for substantially all of the fuel materials and a significant portion of the equipment we purchase are stated in currencies other than Won, generally in U.S. dollars. Since a substantial portion of our revenues is denominated in Won, we must generally obtain foreign currencies through foreign currency-denominated financings or from foreign currency exchange markets to make such purchases or service such debt, fulfill our obligations under existing overseas investments and make new overseas investments. As a result, any significant depreciation of Won against U.S. dollar or other foreign currencies will have a material adverse effect on our profitability and results of operations. See Item 3.D. “Risk Factors—Risks Relating to KEPCO—The movement of Won against the U.S. dollar and other currencies may have a material adverse effect on us.”

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Recent Accounting Changes

New Amendments Adopted

New amendments to IFRS and other accounting standards are set forth below. These amendments had no impact on our consolidated financial statements included in this annual report.

• Amendments to IAS 16—Property, Plant and Equipment

• Amendments to IAS 38—Intangible Assets

• Amendments to IFRS 11—Joint Arrangements

See Note 2 of the notes to our consolidated financial statements included in this annual report for further related information.

New Standards and Amendments Not Yet Adopted

The following new standards and amendments to existing IFRS and other standards are effective for annual periods beginning after January 1, 2016; however, we have not adopted such amendments yet and are currently in the process of evaluating the impact on our consolidated financial statements upon the adoption of these amendments.

• IFRS 9—Financial Instruments. Under the existing guidance in IAS 39, the impairment loss is recognized only if there is an objective evidence using ‘incurred loss’ model. Since IFRS 9 replaces the ‘incurred loss’ model in the existing standard with a forward-looking ‘expected credit loss’ (ECL) model, the loss allowances may increase upon the adoption of this new standard.

• IFRS 15—Revenue from contract with customers. Upon the adoption of this new standard, the timing of revenue recognition may be changed depending on whether the performance obligations in the contract are identified and the duration of such obligations under certain contracts such as operation and maintenance contracts.

• IFRS 16—Leases. Upon the adoption of this new standard, aright-of-use asset will be recognized as a‘right-of-use’ model is applied to all leases, and the related lease liability may increase.

• Amendments to IAS 12—Income Taxes

• Amendments to IFRS 2—Share-based Payment

• Amendments to IAS 7—Statement of Cash Flows

• IFRIC 22—Foreign Currency Transactions and Advance Consideration

• Amendments to IAS 40—Investment Property

See Note 2 of the notes to our consolidated financial statements included in this annual report for further related information.

Critical Accounting Policies

The following discussion and analysis are based on our consolidated financial statements included in this annual report. The fundamental objective of financial reporting is to provide useful information that allows a reader to comprehend our business activities. To aid in that understanding, our management has identified “critical accounting policies.”

We make a number of estimates and judgments in preparing our consolidated financial statements. These estimates may differ from actual results and have a significant impact on our recorded assets, liabilities, revenues

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and expenses and related disclosure of contingent assets and liabilities. We consider an estimate to be a critical accounting estimate if it requires a high level of subjectivity or judgment, and a significant change in the estimate would have a material impact on our financial condition or results of operations. Further discussion of these critical accounting estimates and policies is included in the notes to our consolidated financial statements included in this annual report.

The accounting policies set out below have been applied consistently by us and our subsidiaries to all periods presented in the consolidated annual financial statements, unless otherwise indicated.

Sale and Purchase of Electricity

The Government approves the rates we charge to customers. Our utility rates are designed to recover our reasonable costs plus a fair investment return. We purchase electricity principally from our generation subsidiaries based on a competitive bidding process though the Korea Power Exchange.

We recognize electricity sales revenue based on power sold (transferred to the customer) up to the reporting date. To determine the amount of power sold, we make reasonable estimates on daily power volumes for residential, commercial, industrial and other uses. The differences between the current month’s estimated amounts and actual (meter-read) amounts are adjusted(trued-up) during the next month period.

Construction Contracts

When the outcome of a construction contract can be estimated reliably, revenue and costs are recognized based on the stage of completion of the contract activity at the end of the reporting period, measured based on the proportion of contract costs incurred for work performed to date relative to the estimated total contract costs except where this would not be representative of the stage of completion, utilizing the cost-based input method. In applying the cost-based input method, it is necessary to use estimates and assumptions related to the total estimated costs expected to be incurred in the future, costs incurred which are not related to construction progress, changes in costs due to change of contract or design, etc. Total contract revenue is measured based on an agreed contract price; however, it may fluctuate due to the variation of construction work. The measurement of contract revenue is affected by various uncertainties resulting from unexpected future events. Variations in contract work, claims and incentive payments are included to the extent that the amount can be measured reliably and its receipt is considered probable.

When the outcome of a construction contract cannot be estimated reliably, contract revenue is recognized to the extent of contract costs incurred when it is probable the revenue will be realized. Contract costs are recognized as expenses in the period in which they are incurred. When it is probable that total contract costs will exceed total contract revenue, the expected loss is recognized as an expense immediately.

Derivative Instruments

We recognize rights and obligations arising from derivative instruments as assets and liabilities, which are stated at fair value. The gains and losses that result from the change in the fair value of derivative instruments are reported in current earnings. However, for derivative instruments designated as hedging the exposure of variable cash flows, the effective portions of the gains or losses on the hedging instruments are recorded as accumulated other comprehensive income (loss) and credited or charged to operations at the time the hedged transactions affect earnings, and the ineffective portions of the gains or losses are credited or charged immediately to operations.

Significant management judgment is involved in determining the fair value of estimated derivative instruments. The estimates and assumptions used by our management to determine fair value can be impacted by many factors, such as the estimated discount factor derived from observable market data, credit risk of the counterparty and the estimated cash flow based on settlement period, interest convention, and other contract information of the derivative instruments.

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As of December 31, 2014, we had Won 618 billion of net amounts as assets, and as of December 31, 2015, we had Won 451 billion of net amounts as liabilities. As of December 31, 2016, we had Won 643 billion of net amounts as assets.Changes in the estimated discount factor or cash flow, or changes in the assumptions and judgments by management underlying these estimates, may cause material revisions to the estimated total gain or loss effect of derivative instruments, which could have a material effect on the recorded asset or liability.

Decommissioning Costs

We recognize the fair value of estimated decommissioning costs as a liability in the period in which we incur a legal obligation associated with retirement of long-lived assets that result from acquisition, construction, development and/or normal use of the assets. We also recognize a corresponding asset that is depreciated over the life of the asset. Accretion expense consists ofperiod-to-period changes in the liability for decommissioning costs resulting from the passage of time and revisions to either the timing or the amount of the original estimate of undiscounted cash flows. Depreciation and accretion expenses are included in the cost of electric power in the accompanying consolidated statements of comprehensive income.

Significant management judgment is involved in determining the fair value of estimated decommissioning costs. The estimates and assumptions used by our management to determine fair value can be impacted by many factors, such as the estimated decommissioning costs based on engineering studies commissioned and approved by the Korean government, and changes in assumed dates of decommissioning, inflation rate, discount rate, decommissioning technology, regulation and the general economy.

As of December 31, 2014, 2015 and 2016, we had a liability for decommissioning costs in the amounts of Won 13,234 billion, Won 12,562 billion and Won 13,050 billion, respectively. Changes in the estimated costs or timing of decommissioning, or changes in the assumptions and judgments by management underlying these estimates, may cause material revisions to the estimated total cost to decommission these facilities, which could have a material effect on the recorded liability. We used discount rates of 4.49%, 3.55% and 3.55% and inflation rates of 2.93%, 1.40% and 1.40% when calculating the decommissioning cost liability of nuclear plants recorded as of December 31, 2014, 2015 and 2016, respectively, and discount rate of 4.49% and inflation rate of 2.93% when calculating the decommissioning cost liability of spent fuel recorded as of December 31, 2014, 2015 and 2016. In addition, the following is a sensitivity analysis of the potential impact on decommissioning costs from a 0.10% increase or decrease in each of the inflation rate and the discount rate, assuming that all other aforementioned assumptions remain constant:

	Sensitivity to inflation rate				Sensitivity to discount rate
	+0.10%		-0.10%		+0.10%		-0.10%
	(in billions of Won)
Increase (decrease) of liability for decommissioning costs	￦	295		￦(287)		￦(262)	￦	270

See Notes 26 and 45 of the notes to our consolidated financial statements included in this annual report for further related information.

Provision for Decontamination of Transformer

Under the Persistent Organic Pollutants Management Act which was enacted in 2007, we are required to remove PCB from our transformers’ insulating oil by 2025. We are also required to inspect the PCB levels in our transformers and dispose of any PCBs in excess of established safety standards.

As of December 31, 2014, 2015 and 2016, we had liabilities of Won 200 billion, Won 182 billion and Won 192 billion, respectively, for inspection and disposal costs related to the decontamination of existing transformers.

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The estimates and assumptions used by our management to determine fair value can be affected by many factors, such as the estimated costs of inspection and disposal, inflation rate, discount rate, regulations and the general economy.

Changes in the estimated costs or changes in the assumptions and judgments underlying these estimates may cause material revisions to the estimated total costs, which could have a material effect on our recorded liability. When calculating the provision for the decontamination of our transformers, we used a discount rate of 3.78% and an inflation rate of 2.79% as of December 31, 2014, a discount rate of 3.21% and an inflation rate of 2.65% as of December 31, 2015 and a discount rate of 2.77% and an inflation rate of 1.29% as of December 31, 2016.

Deferred Tax Assets

In assessing the realizability of the deferred tax assets, our management considers whether it is probable that a portion or all of the deferred tax assets will not be realized. The ultimate realization of our deferred tax assets is dependent on whether we are able to generate future taxable income in specific tax jurisdictions during the periods in which temporary differences become deductible. Our management has scheduled the expected future reversals of the temporary differences and projected future taxable income in making this assessment. Based on these factors, our management believes that it is probable that we will realize the benefits of these temporary differences as of December 31, 2016. However, the amount of deferred tax assets that is realized may be different if we do not realize estimated future taxable income during the carry forward periods as originally expected.

In relation to the deferred tax assets recognized for tax loss, future taxable income is estimated considering the followings: (i) five-yearmid-to long-term financial forecasts of earnings before tax approved by management and submitted to the Ministry of Strategy and Finance, and (ii) average amount of tax adjustments for the recent three years.

For tax credits carried forward, similar to deferred tax assets recognized for tax loss, our management estimates the probability timing of future taxable profits in determining the probability of utilization of tax credits carried forward. In addition, our management considers the possible carry forward period and available tax credit or deductible temporary differences within the tax laws of each country in which the tax credits originated.

Similarly, our management also estimates the probability of utilization of temporary differences considering the probability of generating future taxable profits in the periods that the deductible temporary differences reverse. We do not recognize deferred tax assets for certain temporary differences associated with investments in subsidiaries, associates, and interests in joint ventures considering future dividends or disposals.

We recognize deferred tax assets and liabilities based on the differences between the financial statement carrying amounts and the tax bases of assets and liabilities at each separate taxpaying entity. Under IFRS, a deferred tax asset is recognized for temporary difference that will result in deductible amounts in future years and for carry forwards. If, based on the weight of available evidence, it is more likely that some or the entire portion of the deferred tax asset will not be realized, that portion is deducted directly from the deferred tax asset.

We believe that the accounting estimate related to the realizability of deferred tax asset is a “critical accounting estimate” because: (i) it requires management to make assessments about the timing of future events, including the probability of expected future taxable income and available tax planning opportunities, and (ii) the difference between these assessments and the actual performance could have a material impact on the realization of tax benefits as reported in our results of operations. Management’s assumptions require significant judgment because actual performance has fluctuated in the past and may continue to do so.

Useful Lives of Property, Plant and Equipment

Property, plant and equipment are initially measured at cost and after initial recognition, are carried at cost less accumulated depreciation and accumulated impairment losses. The cost of property, plant and equipment

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includes expenditures arising directly from the construction or acquisition of the asset, any costs directly attributable to bringing the asset to the location and condition necessary for it to be capable of operating in the manner intended by management and the initial estimate of the costs of dismantling and removing the item and restoring the site on which it is located.

Economic useful life is the duration of time the asset is expected to be productively employed by us, which may be less than its physical life. Management’s assumptions on the following factors, among others, affect the determination of estimated economic useful life: wear and tear, obsolescence, technical standards, changes in market demand and technological changes.

The estimated useful lives of our property, plant and equipment are as follows:

	Useful lives (years)
Buildings	8 ~ 40
Structures	8 ~ 50
Machinery	2 ~ 32
Vehicles	3 ~ 8
Loaded heavy water	30
Asset retirement costs	18, 30, 40, 60
Finance lease assets	6 ~ 32
Ships	9
Others	4 ~ 15

A component that is significant compared to the total cost of property, plant and equipment is depreciated over its separate useful life.

Depreciation methods, residual values and useful lives of property, plant and equipment are reviewed at the end of each reporting period and if change is deemed appropriate, it is treated as a change in accounting estimate. As a result of such annual review, useful lives of certain machinery were changed during 2016 and as a result, depreciation expenses increased by Won 160,985 million for the year ended December 31, 2016. Depreciation expenses are expected to increase by Won 130,514 million and Won 91,197 million for the years ending December 31, 2017 and 2018, respectively, and to decrease by Won 382,696 million for the years after December 31, 2018.

Impairment of Long-lived Assets

At the end of each reporting period, we review the carrying amounts of tangible and intangible assets to determine whether there is any indication that those assets have suffered an impairment loss. If any such indication exists, the recoverable amount of the asset is estimated in order to determine the extent of the impairment loss (if any). Where it is not possible to estimate the recoverable amount of an individual asset, we estimate the recoverable amount of the cash-generating unit to which the asset belongs. Where a reasonable and consistent basis of allocation can be identified, corporate assets are also allocated to individual cash-generating units, or otherwise they are allocated to the smallest group of cash-generating units for which a reasonable and consistent allocation basis can be identified.

Intangible assets with indefinite useful lives and intangible assets not yet available for use are tested for impairment at least annually, and whenever there is an indication that the asset may be impaired. Recoverable amount is the higher of fair value less costs to sell or value in use. In assessing value in use, the estimated future cash flows are discounted to their present values using apre-tax discount rate that reflects current market assessments of the time value of money and the risks specific to the asset for which the estimates of future cash flows have not been adjusted.

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If the recoverable amount of an asset (or a cash-generating unit) is estimated to be less than its carrying amount, the carrying amount of the asset (or the cash-generating unit) is reduced to its recoverable amount. An impairment loss is recognized immediately in income or loss, unless the relevant asset is carried at a revalued amount, in which case the impairment loss is treated as a revaluation decrease.

In the event that an impairment loss subsequently reverses, the carrying amount of the asset (or a cash-generating unit) is increased to the revised estimate of its recoverable amount, ensuring that such carrying amount increase does not exceed the carrying amount that would have been determined had no impairment loss been recognized for the asset (or the cash-generating unit) in prior years. A reversal of an impairment loss is recognized immediately in income or loss, unless the relevant asset is carried at a revalued amount, in which case the reversal of the impairment loss is treated as a revaluation increase.

The assessment of impairment is a critical accounting estimate, because significant management judgment is required to determine: (i) whether an indicator of impairment has occurred, (ii) how assets should be grouped, and (iii) the recoverable amount of the asset or asset group in the case of impairment. If management’s assumptions about these assets change as a result of events or circumstances, and management believes the assets may have declined in value, we may record impairment charges, resulting in lower profits. Our management uses its best estimate in making these evaluations and considers various factors, including the future prices of energy, fuel costs and other operating costs. However, actual market prices and operating costs could vary from those used in the impairment evaluations, and the impact of such variations could be material. We performed impairment tests on individual assets of KOSEP and EWP, both of which are wholly owned subsidiaries, for the year ended December 31, 2015 due to potential indictors of impairment. For the year ended December 31, 2016, there were no potential indicators of impairment, and we therefore did not perform an impairment test for such year. Accordingly, we recognized the amount by which the carrying amount exceeds its recoverable amount as impairment loss on our consolidated statements of comprehensive income. See Note 18 of the notes to our consolidated financial statements included in this annual report for further information.

Accrual for Loss Contingencies for Legal Claims

We are involved in legal proceedings regarding matters arising in the ordinary course of business. In relation to these matters, as of December 31, 2016, we and our subsidiaries were engaged in 675 lawsuits as a defendant and 193 lawsuits as a plaintiff. The total amount claimed against us and our subsidiaries was Won 636 billion and the total amount claimed by us was Won 490 billion as of December 31, 2016. As of December 31, 2016, our provisions for these legal claims amounted to Won 198 billion. These provisions are adjusted when events or circumstances cause these judgments or estimates to change.

Actual amounts of our liabilities as determined upon settlement of legal claims or by final decisions of the courts in relation thereto may be substantially different from the amounts of provisions recognized or contingent liabilities disclosed. If the actual amounts are higher than the amounts of related provisions, the resulting additional liabilities would adversely impact our results of operations, financial condition and cash flows.

Consolidated Results of Operations

2016 Compared to 2015

In 2016, our consolidated sales, which is principally derived from the sale of electric power, increased by 2.0% to Won 59,763 billion from Won 58,582 billion in 2015, reflecting primarily a 2.8% increase in the volume of electricity sold from 483,655 gigawatt hours in 2015 to 497,039 gigawatt hours in 2016. The overall increase in the volume of electricity sold was primarily attributable to a 1.9% increase in the volume of electricity sold to the industrial sector, which represents the largest segment of electricity consumption in Korea, from 273,548 gigawatt hours in 2015 to 278,828 gigawatt hours in 2016, a 4.8% increase in the volume of electricity sold to the commercial sector, which represents the second largest segment of electricity consumption in Korea, from

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103,679 gigawatt hours in 2015 to 108,617 gigawatt hours in 2016, and a 3.7% increase in the volume of electricity sold to the residential sector from 65,619 gigawatt hours in 2015 to 68,057 gigawatt hours in 2016. The increase in the volume of electricity sold to the industrial sector was primarily due to the general increase in demand for electricity as a result of the turnaround in industries such as semiconductors, chemicals and petrochemicals, which involved increased industrial output and greater capacity utilization of industrial plants.The increase in the volume of electricity sold to the commercial sector was primarily due to a rebound in the domestic economy and increased air conditioning use in commercial buildings during the summer. The increase in the volume of electricity sold to the residential sector was primarily due to the opening of new urban clusters with large-scale residential complexes as well as increased air conditioning use in residential buildings during the summer. Sales of construction services increased by 7.1% to Won 4,027 billion in 2016 from Won 3,761 billion in 2015 primarily due to an increase in sales recorded from theconstruction-in-progress of our nuclear complex construction projects in the United Arab Emirates.

Our consolidated cost of sales, which is principally derived from the costs related to the purchase of fuels for generation of electricity and to a lesser extent, from the purchase of power from independent power producers, depreciation and salaries, remained substantially flat, or increased by 0.2%, to Won 45,550 billion in 2016 from Won 45,458 billion in 2015, primarily due to a 15.6% increase in salaries, a 7.3% increase in depreciation and a 9.9% increase in other cost of sales, which were substantially offset by a 7.2% decrease in fuel costs and a 5.9% decrease in power purchase.

Fuel costs, which accounted for 30.9% and 33.3% of our consolidated cost of sales in 2016 and 2015, respectively, decreased by 7.2% to Won 14,067 billion in 2016 from Won 15,159 billion in 2015, largely due to a 24.3% decrease in unit fuel cost mainly resulting from the general decline in international market prices for our main fuel types, as well as an increased use of less expensive fuel sources such as coal and nuclear power, including due to the commencement of operation of one nuclear unit in 2016.Power purchase, which accounted for 23.6% and 25.1% of our cost of sales in 2016 and 2015, respectively, decreased by 5.9% to Won 10,756 billion in 2016 from Won 11,428 billion in 2015, primarily due to a 20.4% decrease in the unit cost of power purchased from Won 119.6 per kilowatt-hour in 2015 to Won 95.2 per kilowatt-hour in 2016, largely resulting from a general decline in international market prices for the main fuel types, which led to a decrease in the price of electricity generated by independent power producers. Depreciation expense, excluding amortization of nuclear fuel charged to fuel costs in the amounts of Won 1,085 billion and Won 1,057 billion in 2016 and in 2015, respectively, increased by 7.3% to Won 7,620 billion in 2016 from Won 7,102 billion in 2015 primarily due to an increase of additional property, plant and equipment acquired in relation to the construction of new generation facilities pursuant to our capital investment program.

Salaries recorded as cost of sales increased by 15.6% to Won 3,426 billion in 2016 from Won 2,962 billion in 2015 primarily due to an increase in base salary in tandem with the inflation rate and an increase in provision expenses related to the ordinary wage litigation for our generation subsidiaries as described in Item 8.A. “Consolidated Statements and Other Financial Information—Legal Proceedings.”Other cost of sales increased by 9.9% to Won 4,488 billion in 2016 from Won 4,083 billion in 2015 primarily due to an increase in costs recorded from theconstruction-in-progress of our nuclear complex construction projects in the United Arab Emirates.

As a cumulative result of the foregoing factors, our consolidated gross profit increased by 8.3% to Won 14,213 billion in 2016 from Won 13,124 billion in 2015, and our consolidated gross profit margin increased to 23.8% in 2016 from 22.4%% in 2015. The increases in our consolidated gross profit and consolidated gross profit margin were largely attributable to the 2.0% increase in our consolidated sales (which was primarily due to the 2.8% increase in the volume of electricity sold, as well as the 7.1% increase in the sales of construction services), which substantially outpaced the 0.2% increase in our consolidated cost of sales (which was mainly due to the 15.6% increase in salaries, the 7.3% increase in depreciation and the 9.9% increase in other cost of sales, which were substantially offset by the 7.2% decrease in fuel costs and the 5.9% decrease in power purchase).

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Our consolidated selling and administrative expenses increased by 22.6% to Won 2,639 billion in 2016 from Won 2,153 billion in 2015, largely due to a 151.4% increase in other expenses, which mainly resulted from the commencement of a campaign to subsidize households for the use of electronic appliances with high energy efficiency and, to a lesser extent, an increase in salaries recorded as selling and administrative expenses.

Our consolidated other income, net of expenses, decreased by 6.7% to Won 652 billion in 2016 from Won 699 billion in 2015, mainly as a result of a decrease in compensation and reparations revenue, which relate to penalties collected fromsub-contractors as a result of contractual breaches.

Our consolidated net other gains decreased significantly to Won 70 billion in 2016 from Won 8,611 billion in 2015, primarily as a result of a decrease in gains on disposal of property, plant and equipment. The decrease in gains on disposal of property, plant and equipment decreased largely due to the absence in 2016 of a disposal of property in magnitude comparable to the sale of our previous headquarters in 2015.

As a cumulative result of the foregoing factors, our consolidated operating profit decreased by 39.4% to Won 12,296 billion in 2016 from Won 20,281 billion in 2015, and our consolidated operating income margin decreased to 20.6% in 2016 from 34.6% in 2015. These decreases were mainly due to a significant decrease in our consolidated net other gains primarily as a result of a decrease in gains on disposal of property, plant and equipment due to the absence in 2016 of a disposal of property in magnitude comparable to the sale of our previous headquarters in 2015.

Our consolidated finance expenses, net, decreased by 10.2% to Won 1,646 billion in 2016 from Won 1,832 billion in 2015, primarily as a result of a decrease in interest expense and a decrease in net losses on foreign currency translation, which were partially offset by a decrease in net gains on valuation of derivatives.

We recorded consolidated loss of associates or joint ventures using equity method of Won 137 billion in 2016 compared to such gain of Won 207 billion in 2015, primarily as a result of a decrease in profit of Korea Gas Corporation.

As a cumulative result of the foregoing factors, our consolidated income before income taxes decreased by 43.6% to Won 10,513 billion in 2016 from Won 18,656 billion in 2015.

Our income tax expense decreased by 35.8% to Won 3,365 billion in 2016 from Won 5,239 billion in 2015, largely as a result of the decrease in our profit before income taxes. Our effective tax expense (benefit) rate, which represents tax expense (benefit) as a percentage of profit (loss) before income taxes, increased from 28.1% in 2015 to 32.0% in 2016 primarily due to an increase of adjustment in respect of prior years due to change in estimate. In 2016, the effective tax rate was higher than the statutory rate of 24.2%, primarily due to the recognition of deferred tax liabilities regarding our investments in subsidiaries, associates and joint ventures primarily in connection with taxable temporary differences related to undistributed earnings. See Note 41 to our financial statements included in this annual report.

As a cumulative result of the above factors, our consolidated profit decreased by 46.7% to Won 7,148 billion in 2016 from Won 13,416 billion in 2015. Our consolidated net profit margin also decreased to 12.0% in 2016 from 22.9% in 2015. Our profit attributable to the owners of the company was Won 7,048 billion in 2016 compared to Won 13,289 billion attributable to the owners of the company in 2015.

We reported consolidated other comprehensive loss of Won 2 billion in 2016 compared to consolidated other comprehensive income of Won 34 billion in 2015, largely due to decrease in net change in other comprehensive income from equity method investments primarily in relation to Gemeng International Energy Co., Ltd, which was partially offset by an increase in net change in the realized fair value of available-for-sale securities primarily in relation to PT Adaro Energy Tbk.

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As a cumulative result of the above factors, our consolidated total comprehensive income decreased by 46.9% to Won 7,146 billion in 2016 from Won 13,450 billion in 2015.

2015 Compared to 2014

In 2015, our consolidated sales, which is principally derived from the sale of electric power, increased by 2.6% to Won 58,582 billion from Won 57,123 billion in 2014, reflecting primarily a 0.3% increase in our average electricity tariff rates in 2015 compared to 2014 and a 1.3% increase in the volume of electricity sold from 477,592 gigawatt hours in 2014 to 483,655 gigawatt hours in 2015. The overall increase in the volume of electricity sold was primarily attributable to a 0.4% increase in the volume of electricity sold to the industrial sector, which represents the largest segment of electricity consumption in Korea, from 272,552 gigawatt hours in 2014 to 273,548 gigawatt hours in 2015, a 2.9% increase in the volume of electricity sold to the commercial sector, which represents the second largest segment of electricity consumption in Korea, from 100,761 gigawatt hours in 2014 to 103,679 gigawatt hours in 2015, and a 1.8% increase in the volume of electricity sold to the residential sector from 64,457 gigawatt hours in 2014 to 65,619 gigawatt hours in 2015. The increase in the volume of electricity sold to the industrial sector was primarily due to the general increase in demand for electricity as a result of continuedexport-led growth of the Korean economy, which involved increased industrial output and greater capacity utilization of industrial plants. The increase in the volume of electricity sold to the commercial sector was primarily due to the recovery of market demand as a result of various government policies to boost the economy. The increase in the volume of electricity sold to the residential sector was primarily due to an increase in household electricity usage for air conditioning and heating. Sales of construction services increased by 26.8% to Won 3,761 billion in 2015 from Won 2,965 billion primarily due to an increase in sales recorded from theconstruction-in-progress of our nuclear complex construction projects in the United Arab Emirates.

Our consolidated cost of sales, which is principally derived from the costs related to the purchase of fuels for generation of electricity and to a lesser extent, from the purchase of power from independent power producers, depreciation and salaries, decreased by 8.7% to Won 45,458 billion in 2015 from Won 49,763 billion in 2014, primarily due to a 26.4% decrease in fuel costs and a 9.3% decrease in purchased power, which was partially offset by a 5.7% increase in depreciation, a 12.5% increase in salaries and a 22.8% increase in other cost of sales.

Fuel costs, which accounted for 33.3% and 41.4% of our consolidated cost of sales in 2015 and 2014, respectively, decreased by 26.4% to Won 15,159 billion in 2015 from Won 20,595 billion in 2014 largely due to a 28.7% decrease in unit fuel cost mainly resulting from the general decline in international market prices for our main fuel types, as well as an increased use of less expensive fuel sources such as coal and nuclear power due to the operational commencement of one nuclear generation unit and two coal generation units and the resumption of one nuclear generation unit in 2015. Purchased power, which accounted for 25.1% and 25.3% of our cost of sales in 2015 and 2014, respectively, decreased by 9.3% to Won 11,428 billion in 2015 from Won 12,602 billion in 2014, primarily due to a 22.7% decrease in the cost of power purchased from Won 154.70 per kilowatt-hour in 2014 to Won 119.60 per kilowatt-hour in 2015, primarily due to a general decline in international market prices for our main fuel types. Depreciation expense, excluding amortization of nuclear fuel charged to fuel costs in the amounts of Won 1,057 billion and Won 957 billion in 2015 and in 2014, respectively, increased by 5.0% to Won 7,102 billion in 2015 from Won 6,763 billion in 2014 primarily due to an increase of additional property, plant and equipment related to the construction of new generation facilities pursuant to our capital investment program.

Salaries recorded as cost of sales increased by 12.5% to Won 2,962 billion in 2015 from Won 2,634 billion in 2014 primarily due to an increase in base salary in tandem with the inflation rate and an increase in provision expenses related to the ordinary wage litigation as described in Item 8.A. “Consolidated Statements and Other Financial Information—Legal Proceedings.” Other cost of sales increased by 22.8% to Won 8,805 billion in 2015 from Won 7,169 billion in 2014 primarily due to an increase in costs related to our nuclear complex construction projects in the United Arab Emirates.

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As a cumulative result of the foregoing factors, our consolidated gross profit increased by 78.3% to Won 13,124 billion in 2015 from Won 7,360 billion in 2014, and our consolidated gross profit margin increased to 22.4% in 2015 from 12.9% in 2014. The increases in our consolidated gross profit and consolidated gross profit margin were largely attributable to the 2.6% increase in our consolidated sales (which was primarily due to the 0.3% increase in our average electricity tariff rates and the 1.3% increase in the volume of electricity sold, as well as the 26.8% overall increase in the sales of construction services) and the 8.7% decrease in our consolidated cost of sales (which was mainly due to the 26.4% decrease in fuel costs partially offset by the 22.8% increase in other cost of sales).

Our consolidated selling and administrative expenses increased by 11.9% to Won 2,153 billion in 2015 from Won 1,924 billion in 2014, largely due to an increase in salaries recorded as selling and administrative expenses, which was partially offset by a decrease in bad debt expense.

Our consolidated other income, net of expenses, increased by 5.0% to Won 699 billion in 2015 from Won 666 billion in 2014, mainly as a result of an increase in revenue related to the transfer of assets from customers, which were substantially offset by a decrease in gains from the electricity infrastructure development fund.

Our consolidated net other gains increased significantly to Won 8,611 billion in 2015 from Won 107 billion in 2014, primarily as a result of an increase in gains on disposal of property, plant and equipment. The gains on disposal of property, plant and equipment increased largely due to the sale of the properties in our previous headquarters in 2015.

As a cumulative result of the foregoing factors, our consolidated operating profit increased more than threefold to Won 20,281 billion in 2015 from Won 6,209 billion in 2014, and our consolidated operating income margin increased to 34.6% in 2015 from 10.9% in 2014. These increases were mainly due to the 2.6% increase in our consolidated sales and the 8.7% decrease in our consolidated cost of sales as well as a significant increase in our consolidated net other gains primarily as a result of an increase in gains on disposal of property, plant and equipment due to the sale of the properties in our previous headquarters.

Our consolidated finance expenses, net, decreased by 18.8% to Won 1,832 billion in 2015 from Won 2,255 billion in 2014, primarily as a result of a decrease in interest expense and an increase in net gains on valuation derivatives, which was partially offset by an increase in net losses on foreign currency translation.

Our consolidated profit of associates or joint ventures using equity method decreased by 24.7% to Won 207 billion in 2015 from Won 275 billion in 2014, primarily as a result of a decrease in profit of Korea Gas Corporation.

As a cumulative result of the foregoing factors, our consolidated income before income taxes increased to Won 18,656 billion in 2015 from Won 4,229 billion in 2014.

Our income tax expense increased to Won 5,239 billion in 2015 from Won 1,430 billion in 2014, largely as a result of an increase in our profit before income taxes. Our effective tax expense (benefit) rate, which represents tax expense (benefit) as a percentage of profit (loss) before income taxes, decreased from 33.8% in 2014 to 28.1% in 2015 primarily due to an increase in profit which is not subject to deferred income tax. In 2015, the effective tax rate was higher than the statutory rate of 24.2%, primarily due to the recognition of deferred tax liabilities regarding our investments in subsidiaries, associates and joint ventures primarily in connection with taxable temporary differences related to undistributed earnings. See Note 41 to our financial statements included in this annual report.

As a cumulative result of the above factors, our consolidated profit increased to Won 13,416 billion in 2015 from Won 2,799 billion in 2014. Our consolidated net profit margin also increased to 22.9% in 2015 from 4.9% in 2014. Our profit attributable to the owners of the company was Won 13,289 billion in 2015 compared to Won 2,687 billion attributable to the owners of the company in 2014.

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We had consolidated other comprehensive income of Won 34 billion in 2015 compared to consolidated other comprehensive loss of Won 358 billion in 2014, largely as a result of increased actuarial gains on retirement benefit obligations, net of tax (related to changes in future salary increases), valuation gains onavailable-for-sale securities (primarily Korea District Heating Corp. and Set Holding) and gains on valuation of derivatives using cash flow hedge accounting, share in other comprehensive income of associates and joint ventures, net of tax.

As a cumulative result of the above factors, our consolidated total comprehensive income increased to Won 13,450 billion in 2015 from Won 2,441 billion in 2014.

Inflation

The effects of inflation in Korea on our financial condition and results of operations are reflected primarily in construction costs as well as in labor expenses. Inflation in Korea has not had a significant impact on our results of operations in recent years. It is possible that inflation in the future may have an adverse effect on our financial condition or results of operations.

Segment Results

We operate the following business segments: transmission and distribution, nuclear power generation and thermal power generation and all others. The transmission and distribution segment, which is operated by us, the parent company, consists of operations related to the transmission, distribution and sale toend-users of electricity purchased from our generation subsidiaries as well as from independent power producers. The power generation segment, which is operated by our one nuclear generation subsidiary and fivenon-nuclear generation subsidiaries, consists of operations related to the generation of electricity sold to us through the Korea Power Exchange. The transmission and distribution segment and the power generation segment together represent our electricity business. The remainder of our operation is categorized as “all others.” The all other segment consists primarily of operations related to the plant maintenance and engineering service, information services, and sales of nuclear fuel, communication line leasing, overseas businesses and others. In 2014, 2015 and 2016, the unaffiliated revenues of the power generation segment (representing the six generation subsidiaries) and all our other revenues in the aggregate amounted to only 2.8%, 2.8% and 3.0% of our consolidated revenues, respectively, and the results of operations for our business segments substantially mirror our consolidated results of operations. For further information, see Note 4 of the notes to our consolidated financial statements included in this annual report.

Item 5.B. Liquidity and Capital Resources

We expect that our capital requirements, capital resources and liquidity position may change in the course of implementing the Restructuring Plan. See Item 4.B. “—Business Overview—Restructuring of the Electric Power Industry in Korea” and Item 3D. “Risk Factors—Risks Relating to KEPCO—The Government may adopt policy measures to substantially restructure the Korean electric power industry or our operational structure, which may have a material adverse effect on our business, operations and profitability.”

Capital Requirements

We anticipate that the following represent the major sources of our capital requirements in the short-term to intermediate future:

• capital expenditures pursuant to our capital investment program;

• working capital requirements, the largest component of which is fuel purchases;

• payment of principal and interest on our existing debt; and

• overseas investments.

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In addition, if there were to occur unanticipated material changes to the Restructuring Plan, the Basic Plan or other major policy initiatives of the Government relating to the electric power industry, or natural disasters, such developments may require a significant amount of additional capital requirements.

Capital Expenditures

We anticipate that capital expenditures will be the most significant use of our funds for the next several years. Our capital expenditures relate primarily to the construction of new generation units, maintenance of existing generation units and expansion of our transmission and distribution systems. Our capital expenditures generally follow budgets established under the Basic Plan, which contains projections relating to the supply and demand of electricity of Korea based on which we plan the construction of additional generation units and transmission systems.

Our total capital expenditures for the construction of generation, transmission and distribution facilities were Won 16,629 billion, Won 15,750 billion and Won 13,950 billion in 2014, 2015 and 2016, respectively, and under our current budgets, are estimated to be approximately Won 14,307 billion, Won 13,842 billion and Won 16,071 billion in 2017, 2018 and 2019, respectively. We plan to finance our capital expenditures primarily through issuance of securities in the capital markets, borrowings from financial institutions and construction grants.

In January 2016, the Ministry of Trade, Industry and Energy announced an initiative to promote the new energy industry by creating the New Energy Industry Fund, which is made up of funds sponsored by government-affiliated energy companies. The purpose of these funds is to invest in substantially all frontiers of the new energy industry, including renewable energy, energy storage systems, electric vehicles,small-sized self-sustaining electricity generation grids known as “micro-grids”, among others, as well as invest instart-up companies, ventures, small- tomedium-sized enterprise and project businesses that engage in these businesses but have not previously attracted sufficient capital from the private sector. The total size of these funds was US$1 trillion as of December 31, 2016; these funds were funded from our budget for new energy industry projects, which totaled US$6.4 trillion in 2016 and were expended in research and development, efficiency improvements and educational solar power projects, among others. Our budget for new energy industry projects in 2017 amounts to US$5.6 trillion, of which US$1 trillion has been earmarked for potential additional commitments to the New Energy Industry Fund.

Furthermore, according to a plan announced in July 2016 by the Ministry of Trade, Industry and Energy in relation to coal-fired electricity generation units, 10 of our coal generation units that are 30 years or older will be required to be shut down or convert to another fuel use, 43 of our such units that are less than 30 years old will be subject to retrofitting and overall replacement of environmental facilities, and 20 of our such units currently under construction will be subject to more rigorous emission standards. Compliance with such measures is expected to result in our incurring significant costs.

Fuel Purchases

We require significant funds to finance our operations, principally in relation to the purchase of fuels by our generation subsidiaries for generation of electricity. In 2014, 2015 and 2016, fuel costs constituted 41.4%, 33.3% and 30.9% of our cost of sales and the ratio of fuel costs to our sales was 36.1%, 25.9% and 23.4%, respectively. We plan to fund our fuel purchases primarily with net operating cash, although in cases of rapid increases in fuel prices as is the case from time to time, we may also rely on borrowings from financial institutions and issuance of debt securities in the capital markets.

Repayment of Existing Debt

Payments of principal and interest on indebtedness will require considerable resources. The table below sets forth the scheduled maturities of the outstanding interest-paying debt (excluding issue discounts and premium)

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before accounting for swap transactions of us and our six wholly-owned generation subsidiaries as of December 31, 2016 for each year from 2017 to 2021 and thereafter. As of December 31, 2016, such debt represented 96.0% of our outstanding debt on a consolidated basis.

Year ended December 31	Local Currency Borrowings		Foreign Currency Borrowings		Domestic Debentures		Foreign Debentures		Total
	(in billions of Won)
2017		598		40		5,650		2,175		8,463
2018		33		—		5,200		3,108		8,341
2019		9		—		4,200		1,560		5,769
2020		9		—		4,820		888		5,717
2021		9		9		3,720		967		4,705
Thereafter		40		2		16,130		2,418		18,590
Total		698		51		39,720		11,116		51,585

We and our six wholly-owned generation subsidiaries incurred interest charges (including capitalized interest) in relation to our interest-paying debt of Won 3,121 billion, Won 2,846 billion and Won 2,490 billion in 2014, 2015 and 2016, respectively. We anticipate that interest charges will increase in future years because of, among other factors, anticipated increases in our long-term debt. See “—Capital Resources” below. The weighted average rates of interest on our and our six wholly-owned generation subsidiaries’ debt were 3.93%, 3.87% and 3.69% in 2014, 2015 and 2016, respectively.

Overseas Investments

As part of our revenue diversification and fuel procurement strategy, we plan to continue to make overseas investments on a selective basis, which will be funded primarily through foreign currency-denominated borrowings and debt securities issuances as well as net operating cash from such projects.

Capital Resources

We have traditionally met our working capital and other capital requirements primarily from net cash provided by operating activities, issuance of debt securities and borrowings from financial institutions. Net cash provided by operating activities is primarily a function of electricity sales and fuel purchases and is also affected by increases and decreases in trade receivables, trade payables and inventory related to electricity sales and fuel purchases. Net cash provided by operating activities was Won 12,046 billion, Won 16,943 billion and Won 16,521 billion in 2014, 2015 and 2016, respectively.

As of December 31, 2014, 2015 and 2016, our long-term debt (excluding the current portion but including issue discounts and premium), before accounting for swap transactions, amounted to Won 55,720 billion, Won 50,907 billion and Won 44,700 billion, respectively, representing 101.6%, 74.9% and 61.2% of shareholders’ equity, respectively, as of such dates. As of December 31, 2014, 2015 and 2016, the current portions of our long-term debt were Won 6,446 billion, Won 7,243 billion and Won 8,134 billion, respectively. As of December 31, 2014, 2015 and 2016, our short-term borrowings amounted to Won 659 billion, Won 604 billion and Won 806 billion, respectively. See Note 23 of the notes to our consolidated financial statements included in this annual report. Total long-term debt (including the current portion but excluding issue discounts and premium), before accounting for swap transactions, as of December 31, 2016 was Won 52,949 billion, of which Won 40,730 billion was denominated in Won and an equivalent of Won 12,219 billion was denominated in foreign currencies, primarily U.S. dollars. In addition, we, KHNP and KOWEPO also maintain U.S. dollar-denominated global medium-term note programs in the aggregate amount of US$10 billion, of which approximately US$6.6 billion remains currently available for future drawdown. KOSEP also maintains an A$2 billion Australian dollar medium-term note program, of which approximately A$1.7 billion remains current available for future drawdown.

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Subject to the implementation of our capital expenditure plan and the sale of our interests in our generation subsidiaries and other subsidiaries, our long-term debt may increase or decrease in future years. Until recently, a significant portion of our long-term debt was raised through foreign currency-denominated borrowings. Our foreign currency-denominated long-term debt (including the current portion but excluding issue discounts and premium), before accounting for swap transactions, amounted to Won 12,366 billion and Won 12,219 billion as of December 31, 2015 and 2016, respectively.

Our ability to incur long-term debt in the future is subject to a variety of factors, many of which are beyond our control, including, the implementation of the Restructuring Plan and the amount of capital that other Korean entities may seek to raise in capital markets. Economic, political and other conditions in Korea may also affect investor demand for our securities and those of other Korean entities. In addition, our ability to incur debt will also be affected by the Government’s policies relating to foreign currency borrowings, the liquidity of the Korean capital markets and our operating results and financial condition. In case of adverse developments in Korea, the price at which such financing may be available may not be acceptable to us.

We incur our short-term borrowings primarily through commercial papers sold to domestic financial institutions. We have not had, and we do not expect to have, any material difficulties in obtaining short-term borrowings. In addition, in order to prepare for potential liquidity shortage, we maintain several credit facilities with financial institutions, withWon-denominated facilities amounting to Won 3,747 billion in aggregate and foreign currency-denominated facilities amounting to US$1,954 million in aggregate. The full amount of these facilities was available as of December 31, 2016.

We may raise capital from time to time through the issuance of equity securities. However, there are certain restrictions on our ability to issue equity, including limitations on shareholdings by foreigners. In addition, without changes in the existing KEPCO Act which requires that the Government, directly or pursuant to the Korea Development Bank Act, through Korea Development Bank, own at least 51% of our capital stock, it may be difficult or impossible for us to undertake any equity financing other than sales of treasury stock without the participation of the Government. Even if we are able to conduct equity financing with the participation of the Government, prevailing market conditions may be such that we may not be able conduct equity financing on terms that are commercially acceptable to us. See Item 3D. “Risk Factors—Risks Relating to Korea and the Global Economy.”

Our total shareholders’ equity increased by 7.5% from Won 67,942 billion as of December 31, 2015 to Won 73,051 billion as of December 31, 2016, mainly as a result of an increase in total comprehensive income.

Liquidity

Our liquidity is substantially affected by our acquisition of property, plant and equipment, fuel purchases and schedule of repayment of debt. Our property, plant and equipment increased by 3.1% from Won 141,361 billion as of December 31, 2015 to Won 145,743 billion as of December 31, 2016. Although fuel costs decreased by 7.2% from Won 15,159 billion in 2015 to Won 14,067 billion in 2016, our current trade and other payables which is closely related to fuel costs increased by 17.9% from Won 4,736 billion as of December 31, 2015 to Won 5,585 billion as of December 31, 2016. Our current financial liabilities increased by 13.8% from Won 7,857 billion as of December 31, 2015 to Won 8,942 billion as of December 31, 2016 according to our debt repayment schedule.

Our cash flows are also impacted by other factors. Our net cash provided by operating activities decreased by 2.5% from Won 16,943 billion in 2015 to Won 16,521 billion in 2016. The decrease in net cash provided by operating activities in 2016 compared to 2015 was mainly due to an increase in income taxes paid. Our cash flows from investing activities are affected by acquisitions of property, plant and equipment. Our net cash used in investing activities decreased by 1.3% from Won 9,774 billion in 2015 to Won 9,646 billion in 2016. Our cash

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flows from financing activities are mainly affected by borrowings and issuance of debt securities and repayment thereof, as well as dividends paid. Our net cash used in financing activities increased by 46.7% from Won 5,207 billion in 2015 to Won 7,637 billion in 2016, largely due to an increase in dividends paid.

Due to the capital-intensive nature of our business as well as significant volatility in fuel prices, from time to time we operate with working capital deficits, and we may have substantial working capital deficits in the future. As of December 31, 2014, 2015 and 2016, we had a working capital deficit of Won 4,780 billion, Won 686 billion and Won 5,031 billion, respectively. We have traditionally met our working capital and other capital requirements primarily with net cash provided by operating activities, issuance of debt securities, borrowings from financial institutions and construction grants. We also incur short-term borrowings primarily through commercial papers sold to domestic financial institutions. We have not had, and we do not expect to have, any material difficulties in obtaining short-term borrowings. See “—Capital Resources.”

We may face liquidity concerns in the case of sudden and sharp depreciation of the Won against major foreign currencies or depreciation over a sustained period of time. While substantially all of our revenues are denominated in Won, we pay for substantially all of our fuel purchases in foreign currencies and a substantial portion of our long-term debt is denominated in foreign currencies, and payment of principal and interest thereon is made in foreign currencies. In the past, we have incurred foreign currency debt principally due to the limited availability and the high cost ofWon-denominated financing in Korea. However, in light of the increasing sophistication of the Korean capital markets and the recent increase in Won liquidity in the Korean financial markets, we plan to reduce the portion of our debt which is denominated in foreign currencies although we intend to continue to raise certain amounts of capital through long-term foreign currency debt for purposes of maintaining diversity in our funding sources as well as paying for overseas investments and fuel procurements in foreign currencies.As of December 31, 2016, approximately 23.1% of our long-term debt (including the current portion but excluding issue discounts and premium) before accounting for swap transactions was denominated in currencies other than Won.

We enter into currency swaps and other hedging arrangements with respect to our debt denominated in foreign currencies only to a limited extent due primarily to the limited size of the Korean market for such derivative arrangements. Such instruments include combined currency and interest rate swap agreements, interest rate swaps and foreign exchange agreements. We do not enter into derivative financial instruments in order to hedge market risk resulting from fluctuations in fuel costs. Our policy is to hold or issue derivative financial instruments for hedging purposes only. Our derivative financial instruments are entered into with major financial institutions, thereby minimizing the risk of credit loss. See Note 11 of the notes to our consolidated financial statements.

We paid dividends of Won 500 per share in respect of fiscal year 2014 and Won 3,100 per share in respect of fiscal year 2015. On April 20, 2017, we paid dividends of Won 1,980 per share in respect of fiscal year 2016.

Other

Our operations are materially affected by the policies and actions of the Government. See Item 4.B. “Business Overview—Regulation.”

Item 5.C. Research and Development, Patents and Licenses, etc.

Research and Development

Our research and development program is focused on developing advanced electric power, renewable energy, smart grid and customer-friendly electricity service technologies that will enable us to become a global leader in the energy industry. In order to achieve our corporate vision of becoming a “Smart Energy Creator” in 2014, we adopted the KEPCO Technology Strategy, which emphasizes enhanced technological convergence and customer service. As part of such strategy, we seek to develop (i) clean and smart energy technology, including

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in relation to low carbon emission in power generation, (ii) an efficient and intelligent power transmission and distribution grid system, (iii) technology that will enhance efficiency and responsiveness to consumer’s electricity consumption patterns, and (iv) improvements in information, communication and technology, or ICT, for enhanced customer service.

In 2017, consistent with the Government guidelines, we plan to invest approximately 7.3 % of our annual revenue in the research and development of “creative smart” technologies, particularly with a focus on the following ten areas: carbon-related technology known as “carbon capture, utilization and storage “, offshore wind power, new power transmission technology, super conductor, smart grid, micro grid, new materials in electric power fields, ICT convergence, ICT integration and energy storage systems.

Our high-priority “creative smart energy” projects currently include the following:

• acquiring integrated gasified process technology;

• establishing high-tech smart grid and micro grid test beds in Jeju Island;

• developing highly efficient absorbents for carbon capture;

• commercializing offshore wind power plants;

• obtaining high-voltage direct currents technology suitable for domestic operation; and

• experimental testing of large-scale energy storage systems with capacities ranging from four to eight megawatts.

Our research and development activities also focus on the following:

• in the thermal power generation sector, reducing the greenhouse effect, enhancing efficiency and reducing cost in power plant construction and operation as well as in our plant maintenance, including through improvements in damage analysis and environment-friendly inspections;

• in the renewable energy sector, enhancing efficiency, lowering costs of power generation, identifying new energy sources and exploring new business opportunities;

• in the electric power system sector, enhancing the stability and reliability in the operation of our electric power grid as well as enhancing efficiency in electricity distribution, including throughbuild-out oflarge-sized electricity storage facilities and superconducting transmission cable grids, introducing preventive maintenance measures for substations and developing technologies related to system automation, power utilization and power line communication;

• in the customer service sector, developing technologies enabling a greater range of business opportunities and heightened customer service in anticipation of the upcoming rollout of the smart grid system; and

• in the technological convergence sector, identifying new business opportunities through convergence among technologies and businesses and maximizing synergy from such convergence in tandem with the promotion of creative economy in Korea as well as globally.

In addition, we cooperate closely with several other electric utility companies and research institutes, both foreign and domestic, on various projects to diversify the scope and scale of our research and development activities.

We and our six generation subsidiaries invested Won 638 billion, Won 660 billion and Won 530 billion in 2014, 2015 and 2016, respectively, and currently plan to invest Won 639 billion in 2017, on research and development. Our current focus in research and development is primarily in the area ofICT-based smart energy technological development. We had 1,056 employees engaged in research and development activities as of December 31, 2016. As a result of our research, wehad 2,469 registered patents and 2,363 patent applications outstanding in Korea and abroad as of December 31, 2016.

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Item 5.D. Trend Information

Trends, uncertainties and events which could have a material impact on our sales, liquidity and capital resources are discussed above in Item 5.A. “Operating Results” and Item 5.B. “Liquidity and Capital Resources.”

Item 5.E.Off-Balance Sheet Arrangements

We had no significantoff-balance sheet arrangements as of December 31, 2016.

Item 5.F. Tabular Disclosure of Contractual Obligations

The following summarizes certain of the contractual obligations of us and our six wholly-owned generation subsidiaries as of December 31, 2016 and the effect such obligations are expected to have on liquidity and cash flow in future periods.

	Payments Due by Period
Contractual Obligations(1)	Total		Less than 1 year		1–3 years		3–5 years		After 5 years
	(in billions of Won)
Long-term debt(2)		51,157		8,036		14,110		10,421		18,590
Short-term borrowings		428		428		—		—		—
Interest payments(3)		10,094		1,623		2,578		1,743		4,150
Total	￦	61,679	￦	10,087	￦	16,688	￦	12,164	￦	22,740

Notes:

(1) Other than as set forth in this table, we have several other contractual obligations, including finance lease agreements and fuel purchase agreements. We believe the remaining annual payments under capital and operating lease agreements as of December 31, 2016 were immaterial. Contractual obligations related to payment of debt of us and our six wholly-owned generation subsidiaries represented 96.1% of our outstanding debt as of December 31, 2016 on a consolidated basis. As for fuel purchase agreements, our generation subsidiaries have entered into several contracts under which they are committed to purchasing minimum quantities of fuel, including approximately 80 million tons of bituminous coal annually, approximately 34,719 tons of U3O8, a uranium ore concentrate, by 2030, and a quantity of LNG to be annually negotiated with Korea Gas Corporation, among others. The fuel purchase price is typically negotiated near or at the time of purchase subject to prevailing market conditions. In 2016, we purchased fuel in the amount of Won 12.6 trillion.

(2) Includes the current portion.

(3) A portion of our debt carried a variable rate of interest. We used the interest rate in effect as of December 31, 2016 for the variable rate of interest in calculating the interest payments on debt for the periods indicated.

For a description of our commercial commitments and contingent liabilities, see Note 50 of the notes to our consolidated financial statements included in this annual report.

We entered into a power purchase agreement with GS EPS Co., Ltd. and three othernon-renewable energy independent power producers that are not part of the Community Energy System, under which we are required to purchase all electricity generated by these companies to the extent such electricity is traded through the Korea Power Exchange. The purchase prices for such electricity are predetermined under the power purchase agreements, subject to annual adjustments.We purchased power from these companies in the amounts of Won 1,980 billion, Won 1,049 billion and Won 896 billion in 2014, 2015 and 2016, respectively.

We meet our coal requirements primarily through purchases of bituminous coal and anthracite coal under long-term supply contracts with domestic and foreign suppliers to purchase. Under these long-term supply contracts, purchase prices are adjusted periodically based on prevailing market conditions. We also purchase a substantial portion of our LNG requirements from Korea Gas Corporation, a related party. We have also entered into long-term transportation contracts with Pan Ocean Co., Ltd. and others.

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We import all uranium ore concentrates from sources outside Korea (including the United Kingdom, Kazakhstan, France, Germany, Niger, Canada and Japan) through medium- to long-term contracts and pay for such concentrates with currencies other than Won, primarily U.S. dollars. Contract prices for processing of uranium are generally based on market prices. See Note 49 of the notes to our consolidated financial statements for further details of these contracts.

Under the Long-term Transmission and Substation Plan approved by the Ministry of Trade, Industry and Energy, we are liable for the construction of all of our power transmission facilities and the maintenance and repair expenses for such facilities.

Payment guarantee and short-term credit facilities from financial institutions as of December 31, 2016 were as follows:

Payment guarantee

Description	Financial Institutions	Credit Lines
		(In millions of Won or thousands of USD, JPY, INR, GBP, SAR, NPR, AED and EUR)
Payment of import letter of credits	Shinhan Bank(1)		KRW	19,721
	Woori Bank and others		USD	881,380
Inclusive credits	Shinhan Bank		INR	47,489
	KEB Hana Bank		KRW	258,000
	HSBC and others		USD	332,510
Performance guarantees on guarantees	Kookmin Bank and others		EUR	21,291
	KEB Hana Bank		INR	236,443
	Seoul Guarantee Insurance and others		KRW	93,781
	Bank of Kathmandu		NPR	32,633
	KEB Hana Bank and others		USD	634,223
Guarantees for bid	SMBC and others		USD	18,660
Warranty bond and others	Bank of Kathmandu		NPR	7,176
	KEB Hana Bank		SAR	95,756
	HSBC and others		USD	3,615,443
Trade finance	BNP Paribas and others		USD	750,000
Other guarantees	Export-Import Bank of Korea		EUR	1,400
	KEB Hana Bank		INR	157,830
	KEB Hana Bank		JPY	756,669
	Nonghyup Bank and others		KRW	277,336
	KEB Hana Bank		SAR	2,240
	KEB Hana Bank and others		USD	1,111,636

Note:

(1) We were provided with a guarantee of￦198 million from Daewoo Engineering & Construction Co. Ltd. for some of these commitments.

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Overdraft and Others

Description	Financial Institutions	Credit Lines
		(In millions of Won or thousands of USD)
Overdraft	Nonghyup Bank and others		KRW	1,915,000
Commercial paper	Shinhan Bank and others		KRW	700,000
Limit amount available for card	KEB Hana Bank and others		KRW	46,323
	Banco de Oro		PHP	5,000
Loan limit	Kookmin Bank and others		KRW	1,132,282
	BNP Paribas and others		USD	1,954,150

We provide a performance guarantee related to a construction contract to Kookmin Bank. Such guarantee is not recognized as a provision for financial guarantee because such performance guarantee does not meet the definition of a financial guarantee contract under IFRS.

In order to secure our status as a shareholder of Navanacom Electric Co., Ltd., we have signed a fund supplement contract. According to the contract, in case Navanacom Electric Co., Ltd. does not have sufficient funds for its operation or repayment of borrowings, we bear a payment obligation in proportion to our ownership.

We have outstanding borrowings with a limit of US$275.6 million from creditors such as International Finance Corporation. Regarding the borrowing contract, we have guaranteed capital contribution of US$69.8 million and additional contribution up to US$19 million for contingencies, if any. For one of the electricity purchasers, Central Power Purchasing Agency Guarantee Ltd., we have provided payment guarantee up to US$2,110 thousand, in case of a construction delay or insufficient contract volume after commencement of the construction.

We have provided PT. Perusahaan Listrik Negara performance guarantee up to USD 917 thousand in proportion to our ownership in the electricity purchase contract with PT. Cirebon Energi Prasarana in relation to the second electric power generation business in Cirebon, Indonesia. Also, in relation to the business, we have provided Limited Notice To Proceed 2 (“LNTP 2”) Offshore performance payment guarantee amounting to USD 2,784 thousand to Hyundai Engineering Co. Ltd., Toshiba Corporation and MHPS, and LNTP 2 Onshore performance payment guarantee amounting to USD 380 thousand to Hyundai E&C and Toshiba Asia Pacific Indonesia (TAPI) based on the interest owned by us to progress the construction.

We have provided the Export-Import Bank of Korea and SMBC guarantee of mutual investment of USD 401 thousand, which is equivalent to the ownership interest of PT Mega Power Mandiri, in order to guarantee the expenses related to hydroelectric power business of PT Wampu Electric Power, our associate.

We have provided the Export-Import Bank of Korea, BNP Paribas and ING Bank guarantee of mutual investment of USD 2,684 thousand, which is equivalent to the ownership interest of PT BS Energy and PT Nusantara Hydro Alam, in order to guarantee the expenses related to hydroelectric power business of Tanggamus, Indonesia.

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Existing guarantees provided by us to our associates and joint ventures as of December 31, 2016 are as follows.

Primary Guarantor (Providing Company)	Secondary Guarantor (Provided Company)	Type of Guarantees	Currency	Credit Limit		Guarantee (Final Provided Company)
KEPCO	KEPCO SPC Power Corporation	Debt guarantees	USD		71,192	SMBC, Export-Import Bank of Korea and ADB
KEPCO	Shuweihat Asia O&M Co., Ltd.	Performance guarantees	USD		11,000	SAPCO
KEPCO	KNOC Nigerian East Oil Co., Ltd. and KNOC Nigerian West Oil Co., Ltd.	Performance guarantees	USD		34,650	Korea National Oil Corporation (Nigerian government)
KEPCO	Rabigh Operation & Maintenance Company	Performance guarantees and others	USD		1,387	RABEC
KEPCO	Nghi Son 2 Power Ltd.	Bidding guarantees	USD		10,000	SMBC Ho Chi Minh
KEPCO	Barakah One Company	Debt guarantees	USD		90,000	Export-Import Bank of Korea
		Performance guarantees and others	USD		3,404,275
KOWEPO	Cheongna Energy Co., Ltd.	Collateralized money invested	KRW		27,211	KEB Hana Bank and others
		Guarantees for supplemental funding(1)			—
KOWEPO	Xe-PianXe-Namnoy Power Co., Ltd.	Payment guarantees for business reserve	USD		2,500	Krung Thai Bank
		Collateralized money invested	USD		43,276
		Impounding bonus guarantees	USD		5,000	SK E&C
KOWEPO	Rabigh O&M Co., Ltd.	Performance guarantees and others	SAR		5,600	Saudi Arabia British Bank
KOWEPO	Deagu Photovoltaic Co., Ltd.	Collateralized money invested	KRW		1,230	IBK
KOWEPO	Dongducheon Dream Power Co., Ltd.	Collateralized money invested	KRW		111,134	Kookmin Bank and others
KOWEPO	PT. Mutiara Jawa	Collateralized money invested	USD		2,610	Woori Bank
KOWEPO	Heangbok Do Si Photovoltaic Power Co., Ltd.	Collateralized money invested	KRW		194	Nonghyup Bank
KOWEPO	Shin Pyeongtaek Power Co., Ltd.	Collateralized money invested	KRW		40	Kookmin Bank
EWP	Busan Shinho Solar Power Co., Ltd.	Collateralized money invested	KRW		2,100	Heungkuk Life Insurance Co., Ltd. and others

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Primary Guarantor (Providing Company)	Secondary Guarantor (Provided Company)	Type of Guarantees	Currency	Credit Limit		Guarantee (Final Provided Company)
EWP	Seokmun Energy Co., Ltd.	Collateralized money invested	KRW		580	KEB Hana Bank and others
		Guarantees for supplemental funding(1)	KRW		15,370
EWP	Chun-cheon Energy Co., Ltd.	Collateralized money invested	KRW		52,700	Kookmin Bank and others
		Guarantees for supplemental funding(1)	KRW		60,270
EWP	Honam Wind Power Co., Ltd.	Collateralized money invested	KRW		3,480	Shinhan Bank
EWP	GS-Donghae Electric Power Co., Ltd.	Collateralized money invested	KRW		204,000	Korea Development Bank and others
EWP	Yeonggwangbaeksu Wind Power Co., Ltd.	Collateralized money invested	KRW		3,000	Hyundai Marine & Fire Insurance Co., Ltd. and others
EWP	PT. Tanjung Power Indonesia	Debt guarantees	USD		49,221	The Bank of Tokyo-Mitsubishi
KOSPO	KNH Solar Co., Ltd.	Collateralized money invested	KRW		1,296	Shinhan Bank and Kyobo Life Insurance Co., Ltd.
		Performance guarantees and guarantees for supplemental funding and others(1)			—
KOSPO	Daeryun Power Co., Ltd.	Collateralized money invested	KRW		25,477	Korea Development Bank and others
		Guarantees for supplemental funding and others(1)			—
KOSPO	Changjuk Wind Power Co., Ltd.	Collateralized money invested	KRW		3,801	Shinhan Bank and Woori Bank
		Guarantees for supplemental funding(1)			—
KOSPO	Daegu Green Power Co., Ltd.	Collateralized money invested	KRW		46,226	Shinhan Bank
KOSPO	KS Solar Corp. Ltd.	Collateralized money invested	KRW		637	Shinhan Capital Co., Ltd.

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Primary Guarantor (Providing Company)	Secondary Guarantor (Provided Company)	Type of Guarantees	Currency	Credit Limit		Guarantee (Final Provided Company)
KOSPO	Kelar S.A.	Performance guarantees(1)	USD		50,700	KEB Hana Bank, SMBC, Mizuho Bank, BTMU, Natixis
		Debt guarantees	USD		132,600	BANCO SANTANDER-CHILE, SMBC, Mizuho Bank
KOSPO	DS Power Co., Ltd.	Collateralized money invested	KRW		2,900	Korea Development Bank and others
		Guarantees for supplemental funding and others(1)			—
KOSPO	Pyoungchang Wind Power Co., Ltd.	Collateralized money invested	KRW		3,875	Woori Bank and Shinhan Bank
		Performance guarantees and guarantees for supplemental funding and others(1)			—
KOSPO	Taebaek Wind Power Co., Ltd.	Guarantees for supplemental funding and others(1)			—	Shinhan Bank
KEPCO E&C	DS Power Co., Ltd.	Collateralized money invested	KRW		15,000	Korea Development Bank and others
KOMIPO	Hyundai Green Power Co., Ltd.	Collateralized money invested	KRW		87,003	Korea Development Bank and others
		Guarantees for supplemental funding and others(1)			—
KOMIPO	PT. Cirebon Electric Power	Debt guarantees	USD		9,653	Mizuho Bank
KOMIPO	PT. Wampu Electric Power	Debt guarantees			5,367	SMBC
KOMIPO	Gangwon Wind Power Co., Ltd.	Collateralized money invested	KRW		7,409	IBK and others
KOSEP	Hyundai Energy Co., Ltd.	Collateralized money invested	KRW		47,067	Korea Development Bank and others
		Performance guarantees and guarantees for supplemental funding and others(1)	KRW		78,600

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Primary Guarantor (Providing Company)	Secondary Guarantor (Provided Company)	Type of Guarantees	Currency	Credit Limit		Guarantee (Final Provided Company)
KOSEP	RES Technology AD	Collateralized money invested	KRW		15,595	Korea Development Bank and others
		Debt guarantees	EUR		4,271
KOSEP	ASM-BG Investicii AD	Collateralized money invested	KRW		16,101	Korea Development Bank and others
		Debt guarantees	EUR		4,175
KOSEP	Express Solar-light Power Generation Co., Ltd.	Guarantees for supplemental funding and others(1)(2)	KRW		2,500	Woori Bank
KOSEP	S-Power Co., Ltd.	Collateralized money invested	KRW		132,300	Korea Development Bank and others
KOSEP USA, INC.	KODE NOVUS II LLC	Guarantees for supplemental funding and others(1)			3,750	Korea Development Bank
KOSEP USA, INC.	KODE NOVUS I LLC	Guarantees for supplemental funding and others(1)			—	The Export-Import Bank of Korea and others
KHNP	Yeongwol Energy Station Co., Ltd.	Collateralized money invested	KRW		1,400	Meritz Fire & Marine Insurance Co., Ltd.
KHNP	Noeul Green Energy Co., Ltd.	Collateralized money invested	KRW		1,740	KEB Hana Bank and others
KHNP	Busan Green Energy Co., Ltd.	Collateralized money invested	KRW		14,564	Shinhan Bank and others
KEPCO KPS	Incheon New Power Co., Ltd.	Collateralized money invested	KRW		6,800	Shinhan Bank
		Guarantees for supplemental funding and others(1)

Note:

(1) We guarantee to provide supplemental funding for businesses with respect to excessive business expenses or insufficient repayment of borrowings.

(2) We have granted the right to Hana Financial Investment Co., Ltd., as an agent for the creditors to Express Solar-light Power Generation Co., Ltd. (“ESPG”), to the effect that in the event of acceleration of ESPG’s payment obligations under certain borrowings to such creditors, Hana Financial may demand us to dispose of shares in ESPG held by us and apply the resulting proceeds to repayment of ESPG’s obligations.

Other than as described in this annual report and also in Notes 47 and 50 of the notes to our consolidated financial statements included in this annual report, we did not have any other material credit lines and guarantee commitments provided to any third parties as of December 31, 2016.

We are subject to legal proceedings. For a description of our legal proceedings, see Item 8.A. “Consolidated Statements and Other Financial Information—Legal Proceedings.”

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ITEM 6. DIRECTORS, SENIOR MANAGEMENT AND EMPLOYEES

Item 6.A. Directors and Senior Management

Board of Directors

Under the KEPCO Act, the Act on the Management of Public Institutions and our Articles of Incorporation, our board of directors, which is required to consist of not more than 15 directors, including the president, is vested with the authority over our management.

Pursuant to our Articles of Incorporation and the Act on the Management of Public Institutions, we have two types of directors: standing directors (sangim-isa in Korean) andnon-standing directors (bisangim-isain Korean). The standing directors refer to our directors who serve their directorship positions in full-time capacity. Many of our standing directors concurrently hold executive positions with us or our subsidiaries. Thenon-standing directors refer to our directors who do not serve their directorship positions in full-time capacity. Thenon-standing directors currently do not hold any executive positions with us or our subsidiaries.

Under our Articles of Incorporation, there may not be more than seven standing directors, including our president, and more than eightnon-standing directors. The number ofnon-standing directors must exceed the number of standing directors, including our president. A seniornon-standing director appointed by the Ministry of Strategy and Finance becomes our chairman of the board following the review and resolution of the Public Agencies Operating Committee.

Our president serves as our chief executive officer and represents us and administers ourday-to-day business in all matters and bears the responsibility for the management’s performance. Our president is appointed by the President of the Republic upon the motion of the Ministry of Trade, Industry and Energy following the nomination by our director nomination committee, the review and resolution of the Public Agencies Operating Committee pursuant to the Act on the Management of Public Institutions and an approval at the general meeting of our shareholders.

Our standing director who concurrently serve as members of the audit committee are appointed through the same appointment process applicable to our president, except that the motion for appointment is made by the Ministry of Strategy and Finance instead of the Ministry of Trade, Industry and Energy. Standing directors other than our president or those who concurrently serve as members of the audit committee are appointed by our president with the approval at the general meeting of our shareholders.

Ournon-standing directors must be appointed by the minister of the Ministry of Strategy and Finance following the review and resolution of the Public Agencies Operating Committee from a pool of candidates recommended by the director nomination committee and must have ample knowledge and experience in business management, and subject to approval at the general meeting of our shareholders. Government officials that are not part of the teaching staff in national and public schools are ineligible to become ournon-standing directors.

The term of our president is three years, while that of our directors (standing ornon-standing, but not the president) is two years. According to the Act on the Management of Public Institutions, our president’s term cannot be terminated unless done so by the President of the Republic pursuant to the Act on the Management of Public Institutions or upon an event as specified in our Articles of Incorporation.

Attendance by a majority of the board members constitutes a voting quorum for our board meetings, and resolutions can be passed by a majority of the board members. In the event the president acts in violation of law or the Articles of Incorporation, is negligent in his duties, or otherwise is deemed to be significantly impeded in performing his official duties as president, the board of directors may by resolution request the minister of the Ministry of Trade, Industry and Energy to dismiss or recommend the dismissal of the president.

Ournon-standing directors may request any information necessary to fulfill their duties from our president, and except in special circumstances, our president must comply with such request.

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The names, titles and outside occupations, if any, of the directors as of April 15, 2017 and the respective years in which they took office are set forth below.

Name	Age	Title	Outside Occupation	Position Held Since
Cho, Hwan-Eik	(67)	President, Chief Executive Officer and Standing Director	None	December 17, 2012
Lee,Sung-Han	(60)	Standing Director and Member of the Audit Committee	Chaired Professor of College of Social Sciences, Dongguk University	May 2, 2016
Kim,Si-Ho	(59)	Standing Director and Executive Vice President of Domestic Operations	None	August 27, 2015
Lyu, Hyang-Reol	(59)	Standing Director and Executive Vice President of Overseas Operations	None	December 10, 2015
Hyun, Sang-Kwon	(59)	Standing Director and Executive Vice President, Chief Financial Officer and Strategy Officer	None	August 27, 2015
Park, Sung-Chul	(57)	Standing Director and Executive Vice President & Chief Sales Officer	None	July 26, 2016
Moon, Bong-Soo	(59)	Standing Director and Executive Vice President & Chief Power System Officer	None	January 10, 2017
Cho, Jeon-Hyeok	(56)	Non-Standing Director and Member of the Audit Committee	Chairman of Incheon City Committee of Barun Political Party	February 14, 2014
Lee, Kang-Hee	(74)	Non-Standing Director	Director of the Republic of Korea Parliamentarian Society	February 14, 2014
Koo, Ja-Yoon	(65)	Non-Standing Director	Chairman of Conseil International des Grands Reseaux Electriques Korea National Committee	September 2, 2014
Ahn, Choong-Yong	(76)	Non-Standing Director	Chairman of Korea Commission for Corporate Partnership	December 3, 2014
Sung,Tae-Hyun	(58)	Non-Standing Director and Member of the Audit Committee	Professor of Electrical Engineering, Hanyang University	August 12, 2014
Choi, Ki-Ryun	(70)	Non-Standing Director	Professor of Energy Systems Research, Ajou University	August 12, 2014
Kim, Ji-Hong	(61)	Non-Standing Director	None	May 16, 2016
Kim,Ju-Suen	(56)	Non-Standing Director and Member of the Audit Committee	Representative of Kim,Ju-Suen Law Office	August 6, 2015

Cho, Hwan-Eik has been our President, Chief Executive Officer and Standing Director since December 17, 2012. Prior to his current position, he served as Chair-professor at Hanyang University, President of the Korea Trade-Investment Promotion Agency, CEO of Korea Export Insurance Corporation and Vice Minister of the Ministry of Commerce. Mr. Cho received a Ph.D. in business administration from Hanyang University.

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Lee,Sung-Han has been our Standing Director since May 2, 2016. Mr. Lee also currently serves as the Chaired Professor of College of Social Sciences at Dongguk University. Mr. Lee previously served as the Commissioner General of the Korean National Police Agency, Director General of the Korean National Policy Agency’s Office of Audit and Inspection, and Consular at the Embassy of the Republic of Korea in the United States. Mr. Lee received a Ph.D in police administration from Dongguk University.

Kim,Si-Ho has been our Standing Director since August 27, 2015. Mr. Kim also currently serves as our Executive Vice President of Domestic Operations and previously served as Executive Vice President and Chief Operating Officer. Mr. Kim received a B.A. in law from Yeungnam University.

Lyu, Hyang-Reol has been our Standing Director since December 10, 2015. Mr. Lyu also currently serves as our Executive Vice President of Overseas Operations and previously served as our President of KEPCO Ilijan Corporation, Philippines. Mr. Lyu received master’s degrees in business administration from Yonsei University and Helsinki School of Economics.

Hyun, Sang-Kwon has been our Standing Director since August 27, 2015. Mr. Hyun also currently serves as our Executive Vice President, Chief Financial Officer and Chief Strategy Officer, and previously served as our Vice President of Project Strategy & Planning. Mr. Hyun received an M.A. in public administration from Yonsei University Graduate School.

Park, Sung-Chul has been our Standing Director since August 27, 2015. Mr. Park also currently serves as our Executive Vice President and Chief Sales Officer and previously served as Vice President of Seongnam District Division. Mr. Park received an M.A. in electrical engineering from Yonsei University Graduate School.

Moon, Bong-Soohas been our Standing Director since January 10, 2017. Mr. Moon also currently serves as our Executive Vice President and Chief Power System Officer and previously served as our Director General of Project Strategy & Planning Office. Mr. Moon received a B.A. in electrical engineering from Seoul National University.

Cho, Jeon-Hyeok has been ourNon-Standing Director since February 14, 2014. Mr. Cho is currently the Chairman of Incheon City Committee of Barun Political Party.Mr. Cho previously served as a Professor of the Department of Economics, National University of Incheon and Chief Executive Officer of Naeil Venture Capital. Mr. Cho received a Ph.D. in economic theory and financial economics from University of Wisconsin at Madison.

Lee, Kang-Hee has been ourNon-Standing Director since February 14, 2014. Mr. Lee is currently the director of the Republic of Korea Parliamentarian Society. Mr. Lee previously served as a member of the National Assembly for two terms and a member of the Advisory Board on Democratic Peaceful Unification.

Koo, Ja-Yoon has been ourNon-Standing Director since September 2, 2014. Mr. Koo is currently Chairman of Conseil International des Grands Reseaux Electriques Korea National Committee and previously served as Professor of Electronics & System Engineering at Hanyang University. Mr. Koo received a B.S. in Electrical Engineering from Seoul National University and a Ph.D. in Electrical Engineering from ENSIEG.

Ahn, Choong-Yong has been ourNon-Standing Director since December 3, 2014. Mr. Ahn is currently Chairman of Korea Commission for Corporate Partnership and Chaired Professor of Graduate School of International Studies at Chungang University and previously served as the foreign investment ombudsman for Korea Trade-Investment Promotion Agency (KOTRA). Mr. Ahn received a B.A. in Economics from Kyoungpook National University and a Ph.D. in Economics from Ohio State University.

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Sung,Tae-Hyunhas been ourNon-Standing Director since August 12, 2014. Mr. Sung is currently Professor of Electrical Engineering at Hanyang University and previously served as senior researcher at KEPCO Research Institute. Mr. Sung received a B.S. in Material Engineering from Hanyang University and a Ph.D in Material Science and Engineering from Tokyo Institute of Technology.

Choi, Ki-Ryunhas been ourNon-Standing Director since August 12, 2014. Mr. Choi is currently Professor of Energy Systems Research at Ajou University and previously served as head of New & Renewable Energy Center of Korea Energy Management Corporation. Mr. Choi received a B.S. in Mining and Minerals Engineering from Seoul National University and a Ph.D in Energy Economics from University of Grenoble.

Kim, Ji-Hong has been ourNon-Standing Director since May 16, 2016. Mr. Choi previously served as a member of the Banking Subcommittee of the Financial Development Council, Professor at Korea Development Institute and anon-standing director at KB Kookmin Bank.

Kim,Ju-Suen has been ourNon-Standing Director since August 6, 2015. Mr. Kim is currently anattorney-at-law at Kim,Ju-Suen Law Firm. Mr. Kim previously served as Chief Public Prosecutor at the Daejeon Prosecutor’s Office Cheonan branch. Mr. Kim received a B.A. and M.A. in law from Dankook University.

The business address of our directors is 55Jeollyeok-ro,Naju-si, Jeollanam-do, 58217, Korea.

Audit Committee

Under the Act on the Management of Public Institutions, which took effect as of April 1, 2007, we are designated as a “market-oriented public enterprise” and, as such, are required to establish an audit committee in lieu of thepre-existing board of auditors upon expiration of the term of the last remaining member of the board of auditors. In September 2007, we amended our Articles of Incorporation to establish, in lieu of thepre-existing board of auditors, an audit committee meeting the requirements under the Sarbanes-Oxley Act. Under the Act on the Management of Public Institutions, the Korean Commercial Code and the amended Articles of Incorporation, we are required to maintain an audit committee consisting of three members, of which not less than two members are required to benon-standing directors. The roles and responsibilities of our audit committee members are to perform the functions of an audit committee meeting the requirements under the Sarbanes-Oxley Act. Our audit committee was established on December 8, 2008.

Our audit committee currently consists of Lee,Sung-Han, a standing director, and Cho, Jeon-Hyeok and Kim,Ju-Seun, bothnon-standing directors. All such members of the audit committee are independent within the meaning of the Korea Stock Exchange listing standards, the regulations promulgated under the Korean Commercial Code and the New York Stock Exchange listing standards.

Item 6.B. Compensation

The aggregate amount of remuneration paid to our standing andnon-standing directors in the aggregate consist of (i) salaries and wages paid to standing andnon-standing directors, which amounted to Won 1,696 million in aggregate in 2016, and (ii) accrued retirement and severance benefits for standing directors, which amounted to Won 15 million in 2016. Under the Act on the Management of Public Institution, our executive officers consist of the president and the standing andnon-standing directors. Standing directors take executive positions with our company whilenon-standing directors do not. We do not have any other officer who is in charge of a principal business unit, division or function, any other officer who performs a policy making function or any other person who performs similar policy making functions for us.

Item 6.C. Board Practices

Under the Act on the Management of Public Institutions and our Articles of Incorporation, for appoints made after April 1, 2007, the term of office for our president is three years and the term of our office for our

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directors (whether standing ornon-standing but not the president) is two years. Our president and directors may be reappointed for one or more additional terms of one year. In order to be reappointed, the president must be evaluated on the basis of his management performance; a standing director, on the basis of the performance of the duties for which he was elected to perform, or if the standing director has executed an incentive bonus contract, on the basis of his performance under the contract; and anon-standing director, on the basis of his performance of the duties for which he was elected to perform.

Our board currently does not maintain a compensation committee. See Item 16.G. “Corporate Governance.” However, we currently maintain an audit committee meeting the requirements of the Sarbanes-Oxley Act to perform the roles and responsibilities of the compensation committee. Prior to the establishment of the audit committee on December 8, 2008 pursuant to the Act on the Management of Public Institutions, we maintained a board of auditors, which performed the roles and responsibilities required of an audit committee under the Sarbanes-Oxley Act, including the supervision of the financial and accounting audit by the independent registered public accountants.

Our president’s management contract includes benefits upon termination of his employment. The amount for termination benefits payable equals the average value of compensation for one month times the number of years the president is employed by us, provided that the president is only eligible for termination benefits after more than one year of continuous service.

The termination benefits for our standing directors are determined in accordance with our internal regulations for executive compensation. Standing directors are eligible for benefits only upon termination of employment or death following one year of continuous service.

See also Item 16.G. “Corporate Governance” for a further description of our board practices.

Item 6.D. Employees

As of December 31, 2016, we and our generation subsidiaries had a total of 43,688 regular employees, almost all of whom are employed within Korea. Approximately 9.9% of our regular employees (including employees of our generation subsidiaries) are located at our head office.

The following table sets forth the number of and other information relating to our regular employees, not including directors or senior management, as of December 31, 2016.

	KEPCO		KHNP		KOSEP		KOMIPO		KOWEPO		KOSPO		EWP		Total
Regular Employees
Administrative		4,791		1,047		276		307		261		255		262		7,199
Engineers		10,440		9,141		1,788		2,002		1,744		1,716		1,942		28,773
Others		5,726		1,174		201		143		173		166		133		7,716
Total		20,957		11,362		2,265		2,452		2,178		2,137		2,337		43,688
Head Office Employees		1,652		1,196		295		303		265		277		316		4,304
% of total		7.9		10.5		13.0		12.4		12.2		13.0		13.5		9.9
Members of Labor Union		15,596		7,415		1,445		1,439		1,475		1,361		1,642		30,373
% of total		74.4		65.3		63.8		58.7		67.7		63.7		70.3		69.5

We and each of our generation subsidiaries have separate labor unions. Approximately 69.5% of our and our generation subsidiaries’ employees in the aggregate are members of these labor unions, each of which negotiates a collective bargaining agreement for its members each year. Under applicable Korean law, an employee-employer cooperation committee comprised of an equal number of representatives of management and labor (which shall be no less than three and no more than ten representatives from each of management and labor) is

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required to be established. Accordingly, an employee-employer cooperation committee composed of eight representatives of management and eight representatives of labor has been established at us and at each of our generation subsidiaries. The committee meets periodically to discuss various labor issues.

Since our formation in 1981, our businesses had not been interrupted by any work stoppages or strikes except in early 2002, when employees belonging to our fivenon-nuclear generation subsidiaries went on strike for six weeks to protest the Government’s decision to privatize suchnon-nuclear generation subsidiaries according to the Restructuring Plan, which privatization plan has since been suspended indefinitely. See Item 3.D. “Risk Factors—Risks Relating to KEPCO—The Government may adopt policy measures to substantially restructure the Korean electric power industry or our operational structure, which may have a material adverse effect on our business, operations and profitability.”

We believe our relations with our employees are generally good.

Item 6.E. Share Ownership

None of our directors and members of our administrative, supervisory or management bodies own more than 0.1% of our common stock.

ITEM 7. MAJOR SHAREHOLDERS AND RELATED PARTY TRANSACTIONS

Item 7.A. Major Shareholders

The following table sets forth certain information relating to certain owners of our capital stock as of December 31, 2016, the date we last closed our shareholders’ registry:

Title of Class	Identity of Person or Group	Shares Owned		Percentage of Class(1) (%)
Common stock	Government		116,841,794		18.2
	Korea Development Bank(2)		211,235,264		32.9
	Subtotal		328,077,058		51.1
	National Pension Corporation		41,705,930		6.5
	Employee Stock Ownership Association		—		—
	Directors and executive officers as a group		—		—
	Public(non-Koreans)		197,308,414		30.7
	Common shares		161,040,488		25.1
	American depositary shares		36,267,926		5.6
	Public (Koreans)		74,872,675		11.7
	Total		641,964,077		100.0

Notes:

(1) Percentages are based on issued shares of common stock.

(2) Korea Development Bank is a Government-controlled entity.

All of our shareholders have equal voting rights. See Item 10.B. “Memorandum and Articles of Incorporation—Description of Capital Stock—Voting Rights.”

Item 7.B. Related Party Transactions

We are engaged in a variety of transactions with our affiliates. We have related party transactions with Government-controlled entities such as Korea Gas Corporation, our consolidated subsidiaries and our equity investees. In addition, we engage in related party transactions with Korea Development Bank, one of our major shareholders. See Note 47 of the Notes to our consolidated financial statements included in this annual report for a description of transaction and balances with our related parties.

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In the past three years, our related party transactions principally consisted of purchases of LNG from Korea Gas Corporation, sales of electricity to Korea District Heating Co., Ltd., and long-term borrowings from Korea Development Bank. In 2014, 2015 and 2016, we and our generation subsidiaries purchased LNG from Korea Gas Corporation in the aggregate amount of Won 10,135 billion, Won 4,599 billion and Won 3,633 billion, respectively. As of December 31, 2016, we had long-term borrowings from Korea Development Bank in the aggregate amount of Won 204 billion.

We also engage in extensive transactions with our consolidated generation subsidiaries, including the purchase of electricity from them through Korea Power Exchange, sales of electricity to them, payment and receipt of commissions for services and receivables and payables transactions. These are eliminated in the consolidation process. We also provide guarantees for certain of our affiliates. See Item 5.F. “Tabular Disclosure of Contractual Obligations—Overdraft and Others.” We also have certain relationships with the Korea Power Exchange. See Item 4.B. “Business Overview—Purchase of Electricity—Cost-based Pool System.”

For a further description of our transactions with our affiliates, see Note 47 of the Notes to our consolidated financial statements included in this annual report.

Item 7.C. Interests of Experts and Counsel

Not Applicable

ITEM 8. FINANCIAL INFORMATION

Item 8.A. Consolidated Statements and Other Financial Information

We prepare our consolidated financial statements in compliance with requirements under Item 18. “Financial Statements.”

Legal Proceedings

As of December 31, 2016, we and our subsidiaries were engaged in 675 lawsuits as a defendant and 193 lawsuits as a plaintiff. As of the same date, the total amount of damages claimed against us and our subsidiaries was Won 636 billion, for which we have made a provision of Won 198 billion as of December 31, 2016, and the total amount claimed by us and our subsidiaries was Won 490 billion as of December 31, 2016. While the outcome of any of these lawsuits cannot presently be determined with certainty, our management currently believes that the final results from these lawsuits will not have a material adverse effect on our liquidity, financial position or results of operations.

The following are potentially significant claims pertaining to us and our subsidiaries.

In September 2013, Hyundai Engineering & Construction Co., Ltd., SK Engineering & Construction Co., Ltd. and GS Engineering & Construction Co., Ltd. filed a lawsuit against KHNP seeking from KHNP extra contractual payments in the total amount of Won 204 billion on grounds of design change under the construction contract relating to New Hanwool #1 and #2 units. In November 2016, the court ruled against KHNP, and KHNP has paid Won 217 billion of the claimed amounts in full and has subsequently appealed the ruling. The lawsuit is currently pending.

In December 2013, the Supreme Court of Korea ruled that regular bonuses fall under the category of ordinary wages on the condition that those bonuses are paid regularly and uniformly, and that any agreement which excludes such regular bonuses from ordinary wage is invalid. One of the key rulings provides that bonuses that are given to employees (i) on a regular and continuous basis and (ii) calculated according to the actual number of days worked (iii) that are not incentive-based must be included in the calculation of “ordinary wages.”

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The Supreme Court further ruled that in spite of invalidity of such agreements, employees shall not retroactively claim additional wages incurred due to such court decision, in case that such claims bring to employees unexpected benefits which substantially exceeds the wage level agreed by employers and employees and cause an unpredicted increase in expenditures for their company, which would lead the company to material managerial difficulty or would be a threat to the existence of the company. In that case, the claim is not acceptable since it is unjust and is in breach of the principle of good faith. As a result of such ruling by the Supreme Court of Korea, we and our subsidiaries became subject to a number of lawsuits filed by various industry-wide and company-specific labor unions based on claims that ordinary wage had been paid without including certain items that should have been included as ordinary wage. In July 2016, the court ruled against us, and in accordance with the court’s ruling, in August 2016 we paid Won 55.1 billion to the employees for three years of back pay plus interest. As of December 31, 2016, however, 30 lawsuits were pending against our subsidiaries for an aggregate claim amount of Won 198 billion, for which our subsidiaries set aside an aggregate amount of Won 179 billion to cover any potential future payments of additional ordinary wage in relation to the related lawsuits. With respect to two of such lawsuits, in February 2017, the Seoul District Court ruled partially against one of our generation subsidiaries. Other cases are currently pending. We cannot presently assure you that the courts will not ultimately rule against our subsidiaries in these lawsuits, or that the amount of our reserves against these lawsuits will be sufficient to cover the amounts actually payable under court rulings. Any of these developments would adversely affect our results of operations.

During the period from 2014 to 2016, certain residential customers filed class action lawsuits against us based on the claim that electricity tariffs, determined under the progressive rate structure, were excessive. As of December 31, 2016, we were subject to 12 such lawsuits brought by 9,237 plaintiffs with an aggregate claim amount of Won 5.1 billion. No similar lawsuit has been filed since the progressive rate structure was amended effective January 1, 2017 to ease the tariff burden on residential customers.

In addition, our generation subsidiaries, currently and from time to time, are involved in lawsuits incidental to the conduct of their business. A significant number of such lawsuits are based on the claim that the construction and operation of the electricity generation units owned by our generation subsidiaries have impaired neighboring fish farms. Our generation subsidiaries normally pay compensation to the members of fishery associations near our power plant complex for expected losses and damages arising from the construction and operation of their power plants in advance. Despite such compensation paid by us, a claim may still be filed against our generation subsidiaries challenging the compensation paid by us.

The nuclear power plant at Wolsong #1 unit began operations in 1982 and ended its operations in 2012 pursuant to its30-year operating license. In February 2015, the Nuclear Safety and Security Commission (“NSSC”) evaluated the safety of operating Wolsong #1 unit and approved its extended operation until November 2022. However, a civic group filed a lawsuit to annul such decision by the NSSC’s decision, and in February 2017, the Seoul Administrative Court ruled against the NSSC. The NSSC appealed this decision, and the civic group has filed an injunction to suspend the operation of the Wolsong #1 unit. KHNP, which currently is operating the unit pursuant to the NSSC’s initial decision, has joined this lawsuit. We cannot assure you whether the courts will ultimately rule to grant the extension of life for Wolsong #1. There are seven other nuclear generation units whose life under their initial operating license will expire in the next ten years, or by 2027. Thus, if the courts were to ultimately rule against the extension of life for Wolsong #1, we may find it more difficult to have the life of other nuclear units extended as well. The failure to extend the life of these units would result in loss of revenue from such units and the increase in our overall fuel costs (as nuclear fuel is the cheapest compared to coal, LNG or oil), which could adversely affect our results of operation and financial condition.

We and our subsidiaries are also involved in the following arbitrations, among others.

• SAP Korea Ltd brought a breach of contract claim against us and KEPCO KDN Co., Ltd., one of our subsidiaries, in relation to the enterprise resource planning software serviced by SAP Korea. In that connection, arbitration was filed in the International Chamber of Commerce International Court of Arbitration.

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• Hyundai Samsung Joint Venture, one of our subcontractors, filed arbitration against us at the London Court of International Arbitration in 2016 in relation to certain disagreements involving the United Arab Emirates nuclear power plant construction project, but we have not recognized any losses because the probability of economic benefit outflow is remote and the related amount cannot be reasonably determined.

• Hyundai E&C, GS Engineering & Construction Corp., and Hansol SeenTec Co., Ltd. filed arbitration against us with the Korea Commercial Arbitration Board to request payment of additional construction costs.

• Halla Corporation filed arbitration against us with the Korea Commercial Arbitration Board to request payment of additional construction costs.

We do not believe such claims or proceedings, individually or in the aggregate, have had or will have a material adverse effect on us and our generation subsidiaries. However, we cannot assure you that this will be the case in the future, given the possibility that we may become subject to more legal and arbitral proceedings arising from changes in the environmental laws and regulations as they become applicable to us and our generation subsidiaries, and the related growth in demand for more compensation by actual and potential affected parties.

Dividend Policy

For our dividend policy, see Item 10.B. “Memorandum and Articles of Incorporation—Description of Capital Stock—Dividend Rights.” For a description of the tax consequences of dividends paid to our shareholders, see Item 10.E. “Taxation—Korean Taxes—Shares or ADSs—Dividends on the Shares of Common Stock or ADSs” and Item 10.E. “Taxation—U.S. Federal Income and Estate Tax Consideration for U.S. Persons—Tax Consequences with Respect to Common Stock and ADSs—Distributions on Common Stock or ADSs.”

Item 8.B. Significant Changes

Not Applicable

ITEM 9. THE OFFER AND LISTING

Item 9.A. Offer and Listing Details

Notes

We have issued the following registered notes and debentures, which are traded principally in theover-the-counter market:

• 7.95%Zero-To-Full Debentures, due April 1, 2096 (the “7.95% Debentures”);

• 6% Debentures due December 1, 2026, (the “6% Debentures”);

• 7% Debentures due February 1, 2027 (the “7% Debentures”); and

• 6-3/4% Debentures due August 1, 2027 (the“6-3/4% Debentures,” and together with the 7.40% Debentures, the 7.95% Debentures, the 6% Debentures and the 7% Debentures, the “Registered Debt Securities”).

Sales prices for the Registered Debt Securities are not regularly reported on any United States securities exchange or other United States securities quotation service.

Share Capital

The principal trading market for our common stock is the Korea Exchange. Our common stock is also listed on the New York Stock Exchange in the form of ADSs. The ADSs have been issued by Citibank, N.A. as

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depositary and are listed on the New York Stock Exchange under the symbol “KEP.” One ADS representsone-half of one share of our common stock. As of December 31, 2016, the date we last closed our shareholders’ registry, 72,535,852 ADSs representing 5.65% shares of our common stock were outstanding.

Common Stock

Shares of our common stock are listed on the KRX KOSPI Market of the Korea Exchange. The table below shows the high and low closing prices on the KRX KOSPI Market of the Korea Exchange for our common stock since 2012.

	Price
Period	High		Low
	(In Won)
2012
First Quarter		27,900		22,250
Second Quarter		25,850		21,450
Third Quarter		27,900		23,750
Fourth Quarter		30,450		26,200
2013
First Quarter		34,850		29,000
Second Quarter		32,600		24,850
Third Quarter		30,700		26,350
Fourth Quarter		34,750		27,250
2014
First Quarter		37,800		33,400
Second Quarter		41,900		37,050
Third Quarter		48,200		36,800
Fourth Quarter		49,450		40,350
2015
First Quarter		46,000		39,150
Second Quarter		48,500		42,450
Third Quarter		52,200		46,300
Fourth Quarter		53,300		47,500
2016
First Quarter		46,000		39,150
Second Quarter		63,000		57,400
Third Quarter		62,900		54,000
Fourth Quarter		54,500		43,200
October		54,500		49,250
November		49,400		45,750
December		47,000		43,200
2017
First Quarter		48,750		40,350
January		44,000		42,250
February		44,100		40,350
March		48,750		41,500
April (through April 14)		46,700		44,550

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ADSs

The table below shows the high and low closing prices on the New York Stock Exchange for the outstanding ADSs since 2012. Each ADS representsone-half of one share of our common stock.

	Closing Price per ADS
Period	High		Low
	(In US$)
2012
First Quarter		12.45		9.73
Second Quarter		11.18		9.36
Third Quarter		12.42		10.37
Fourth Quarter		13.97		11.65
2013
First Quarter		16.35		13.04
Second Quarter		14.70		10.70
Third Quarter		14.59		11.45
Fourth Quarter		16.61		12.77
2014
First Quarter		17.75		15.51
Second Quarter		20.56		17.66
Third Quarter		22.44		18.17
Fourth Quarter		22.87		18.90
2015
First Quarter		21.01		18.26
Second Quarter		22.53		19.29
Third Quarter		22.13		19.45
Fourth Quarter		23.31		20.28
2016
First Quarter		21.01		18.26
Second Quarter		26.90		24.67
Third Quarter		28.31		24.38
Fourth Quarter		24.34		18.48
October		24.34		21.80
November		21.54		19.69
December		19.72		18.48
2017
First Quarter		21.35		17.53
January		18.80		17.81
February		19.20		17.53
March		21.35		17.80
April (through April 13)		20.85		19.23

Item 9.B. Plan of Distribution

Not Applicable

Item 9.C. Markets

The Korea Exchange

The Korea Exchange began its operations in 1956, originally under the name of the Korea Stock Exchange. On January 27, 2005, pursuant to the Korea Securities and Futures Exchange Act, the Korea Exchange was

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officially created through the consolidation of the Korea Stock Exchange, the Korea Futures Exchange, the KOSDAQ Stock Market, Inc., or KOSDAQ, and the KOSDAQ Committee within the Korea Securities Dealers Association, which was in charge of the management of the KOSDAQ. The KRX KOSPI Market of the Korea Exchange, formerly the Korea Stock Exchange, has a single trading floor located in Seoul. The Korea Exchange is a limited liability company, the shares of which are held by (i) securities companies and futures companies that were the members of the Korea Stock Exchange or the Korea Futures Exchange and (ii) the shareholders of the KOSDAQ.

As of March 31, 2017 the aggregate market value of equity securities listed on the KOSPI of the Korea Exchange was approximately Won 1,400,962 billion. The average daily trading volume of equity securities for the first quarter of 2017 was approximately 393 million shares with an average transaction value of Won 4,556 billion.

The Korea Exchange has the power in some circumstances to suspend trading of shares of a given company or tode-list a security. The Korea Exchange also restricts share price movements. All listed companies are required to file accounting reports annually, semi-annually and quarterly and to release immediately all information that may affect trading in a security.

The Government has in the past exerted, and continues to exert, substantial influence over many aspects of the private sector business community which can have the intention or effect of depressing or boosting the market. In the past, the Government has informally both encouraged and restricted the declaration and payment of dividends, induced mergers to reduce what it considers excess capacity in a particular industry and induced private companies to publicly offer their securities.

The Korea Exchange publishes the Korea Composite Stock Price Index, or KOSPI, every ten seconds, which is an index of all equity securities listed on the KRX KOSPI Market of the Korea Exchange. On January 1, 1983, the method of computing KOSPI was changed from the Dow Jones method to the aggregate value method. In the new method, the market capitalizations of all listed companies are aggregated, subject to certain adjustments, and this aggregate is expressed as a percentage of the aggregate market capitalization of all listed companies as of the base date, January 4, 1980.

Movements in KOSPI in the past five years are set out in the following table:

	Opening		High		Low		Closing
2012		1,826.4		2,049.3		1,769.3		1,982.3
2013		2,031.1		2,059.6		1,780.6		2,011.3
2014		1,967.2		2,082.6		1,886.9		1,915.6
2015		1,926.4		2,173.4		1,829.8		1,961.3
2016		1,918.8		2,068.7		1,835.3		2,026.5
2017 (through April 14)		2,026.2		2,178.4		2,026.2		2,134.9

Source: The Korea Exchange

Shares are quoted“ex-dividend” on the first trading day of the relevant company’s accounting period; since the calendar year is the accounting period for the majority of listed companies, this may account for the drop in KOSPI between its closing level at the end of one calendar year and its opening level at the beginning of the following calendar year.

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With certain exceptions, principally to take account of a share being quoted“ex-dividend” and“ex-rights,” upward and downward movements in share prices of any category of shares on any day are limited under the rules of the Korea Exchange to 30% of the previous day’s closing price of the shares, rounded down as set out below:

Previous Day’s Closing Price (Won)	Rounded Down to (Won)
less than 5,000	￦	5
5,000 to less than 10,000		10
10,000 to less than 50,000		50
50,000 to less than 100,000		100
100,000 to less than 500,000		500
500,000 or more		1,000

As a consequence, if a particular closing price is the same as the price set by the fluctuation limit, the closing price may not reflect the price at which persons would have been prepared, or would be prepared to continue, if so permitted, to buy and sell shares. Orders are executed on an auction system with priority rules to deal with competing bids and offers.

Due to deregulation of restrictions on brokerage commission rates, the brokerage commission rate on equity securities transactions may be determined by the parties, subject to commission schedules being filed with the Korea Exchange by the securities companies. In addition, a securities transaction tax will generally be imposed on the transfer of shares or certain securities representing rights to subscribe for shares. A special agricultural and fishery tax of 0.15% of the sales prices will also be imposed on transfer of these shares and securities on the Korea Exchange. See Item 10.E. “Taxation—Korean Taxes.”

The number of companies listed on the KRX KOSPI Market of the Korea Exchange since 2012, the corresponding total market capitalization at the end of the periods indicated and the average daily trading volume for those periods are set forth in the following table:

Year	Number of  Listed Companies		Total Market Capitalization on the Last Day for Each  Period				Average Daily Trading Volume, Value
			(Millions of Won)		(Thousands of U.S. dollars)(1)		(Thousands of Shares)		(Millions of Won)		Thousands of U.S. dollars)(1)
2012		784		1,154,294,166		1,077,671,708		486,480		4,823,643		4,503,448
2013		777		1,185,973,724		1,123,826,138		328,325		3,993,422		3,784,158
2014		773		1,192,252,867		1,084,655,082		319,661		3,891,322		3,540,140
2015		770		1,242,832,089		1,060,436,936		455,256		5,351,734		4,566,326
2016		779		1,308,440,373		1,581,250,191		343,486		4,269,948		5,160,232
2017 (through April 14)		773		1,385,279,447		1,223,853,209		402,868		4,538,953		4,010,030

Source:The Korea Exchange

Note:

(1) Converted at the market average exchange rate as announced by Seoul Money Brokerage Services, Ltd. in Seoul at the end of the periods indicated.

The Korean securities markets are principally regulated by the Financial Services Commission and the Financial Investment Services and Capital Markets Act. The law imposes restrictions on insider trading and price manipulation, requires specified information to be made available by listed companies to investors and establishes rules regarding margin trading, proxy solicitation, takeover bids, acquisition of treasury shares and reporting requirements for shareholders holding substantial interests.

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Protection of Customer’s Interest in Case of Insolvency of Financial Investment Companies with a Brokerage License

Under Korean law, the relationship between a customer and a financial investment company with a brokerage license in connection with a securities sell or buy order is deemed to be consignment, and the securities acquired by a consignment agent (i.e., the financial investment company with a brokerage license) through such sell or buy order are regarded as belonging to the customer insofar as the customer and the consignment agent’s creditors are concerned. Therefore, in the event of bankruptcy or reorganization procedures involving a financial investment company with a brokerage license, the customer of such financial investment company is entitled to the proceeds of the securities sold by such financial investment company.

When a customer places a sell order with a financial investment company with a brokerage license which is not a member of the Korea Exchange and this financial investment company places a sell order with another financial investment company with a brokerage license which is a member of the Korea Exchange, the customer is still entitled to the proceeds of the securities sold received by thenon-member company from the member company regardless of the bankruptcy or reorganization of thenon-member company.

Likewise, when a customer places a buy order with anon-member company and thenon-member company places a buy order with a member company, the customer has the legal right to the securities received by thenon-member company from the member company because the purchased securities are regarded as belonging to the customer insofar as the customer and thenon-member company’s creditors are concerned.

Under the Financial Investment Services and Capital Markets Act, the Korea Exchange is obliged to indemnify any loss or damage incurred by a counterparty as a result of a breach by its members. If a financial investment company with a brokerage license which is a member of the Korea Exchange breaches its obligation in connection with a buy order, the Korea Exchange is obliged to pay the purchase price on behalf of the breaching member.

As the cash deposited with a financial investment company with a brokerage license is regarded as belonging to such financial investment company, which is liable to return the same at the request of its customer, the customer cannot take back deposited cash from the financial investment company with a brokerage license if a bankruptcy or reorganization procedure is instituted against such financial investment company and, therefore, can suffer from loss or damage as a result. However, the Depositor Protection Act provides that Korean Deposit Insurance Corporation will, upon the request of the investors, pay investors up to Won 50 million per depositor per financial institution in case of the such financial investment company’s bankruptcy, liquidation, cancelation of securities business license or other insolvency events (collectively, the “Insolvency Events”). Pursuant to the Financial Investment Services and Capital Markets Act, subject to certain exceptions, financial investment companies with a brokerage license are required to deposit the cash received from their customers with the Korea Securities Finance Corporation, a special entity established pursuant to the Financial Investment Services and Capital Markets Act.Set-off or attachment of cash deposits by financial investment companies with a brokerage license is prohibited. The premiums related to this insurance under the Depositor Protection Act are paid by financial investment companies with a brokerage license.

Item 9.D. Selling Shareholders

Not Applicable

Item 9.E. Dilution

Not Applicable

Item 9.F. Expenses of the Issue

Not Applicable

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ITEM 10. ADDITIONAL INFORMATION

Item 10.A. Share Capital

Not Applicable

Item 10.B. Memorandum and Articles of Incorporation

Set forth below is information relating to our capital stock, including brief summaries of material provisions of our Articles of Incorporation, the KEPCO Act, the Financial Investment Services and Capital Markets Act, the Korean Commercial Code and certain related laws of Korea, all currently in effect. The following summaries are qualified in their entirety by reference to our Articles of Incorporation and the applicable provisions of the KEPCO Act, Financial Investment Services and Capital Markets Act, the Korean Commercial Code, the Act on the Management of Public Institutions and certain related laws of Korea. On November 11, 2016, we amended our Articles of Incorporation to strike references to executive directors (while keeping references to Standing Directors), as executive directors have not been appointed since 2003 and the system of executive directors was deemed obsolete.

Objects and Purposes

We are a statutory juridical corporation established under the KEPCO Act for the purpose of ensuring “stabilization of the supply and demand of electric power, and further contributing toward the sound development of the national economy through expediting development of electric power resources and carrying out proper and effective operation of the electricity business.” The KEPCO Act and our Articles of Incorporation contemplate that we engage in the following activities:

1. development of electric power resources;

2. generation, transmission, transformation and distribution of electricity and other related business activities;

3. research and development of technology related to the businesses mentioned in items 1 and 2;

4. overseas businesses related to the businesses mentioned in items 1 through 3;

5. investments or contributions related to the businesses mentioned in items 1 through 4;

6. businesses incidental to items 1 through 5;

7. Development and operation of certain real estate held by us to the extent that:

a. it is necessary to develop certain real estate held by us due to external factors, such as relocation, consolidation, conversion to indoor or underground facilities or deterioration of our substation or office; or

b. it is necessary to develop certain real estate held by us to accommodate development of relevant real estate due to such real estate being incorporated into or being adjacent to an area under planned urban development; and

8. other activities entrusted by the Government.

Our registered name is “Hankook Chollryuk Kongsa” in Korean and “Korea Electric Power Corporation” in English. Our registration number in the commercial registry office is 114671-0001456.

Directors

Under the KEPCO Act and our Articles of Incorporation, our board of directors consists of our president, standing directors andnon-standing directors. A majority of the board members constitutes a voting quorum, and resolutions will be passed by a majority of the board members. Directors who have an interest in certain agenda proposed to the board may not vote on such issues.

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The standards of remuneration for our officers, including directors, shall be determined by a resolution of the board of directors, provided that the maximum amount of remuneration to be paid to our officers shall be determined by shareholder resolution and provided that the remuneration standards for the president and standing directors shall be determined by board resolution in accordance with the guideline thereon established by the minister of the Ministry of Strategy and Finance through review and resolution of our management committee. Directors who have an interest may not participate in the meeting of the board of directors for determining the remuneration for officers.

Neither the KEPCO Act nor our Articles of Incorporation have provisions relating to (i) borrowing powers exercisable by the directors and how such borrowing powers can be varied, (ii) retirement ornon-retirement of directors under an age limit requirement, or (iii) the number of shares required for a director’s qualification.

Share Capital

Currently, our authorized share capital is 1,200,000,000 shares, which consists of shares of common stock and shares ofnon-voting preferred stock, par value Won 5,000 per share. Under our Articles of Incorporation, we are authorized to issue up to 150,000,000non-voting preferred shares. As of December 31, 2016, the last day on which our shareholders’ registry was closed for purposes of identifying shareholders of record, 641,964,077 common shares were issued and nonon-voting preferred shares have been issued. All of the issued and outstanding common shares are fully-paid andnon-assessable and are in registered form. Share certificates are issued in denominations of 1, 5, 10, 50, 100, 500, 1,000 and 10,000 shares.

Description of Capital Stock

Dividend Rights

Under the KEPCO Act, we are authorized to pay preferential dividends on our shares held by public shareholders as opposed to those held by the Government. Dividends to public shareholders are distributed in proportion to the number of shares of the relevant class of capital stock owned by each public shareholder following approval by the shareholders at a general meeting of shareholders. Korea Development Bank may receive dividends in proportion to the numbers of our shares held by them. Under the Korean Commercial Code and our Articles of Incorporation, we will pay full annual dividends on newly issued shares.

Under our Articles of Incorporation, holders ofnon-voting preferred shares (of which there are currently none) are entitled to receive an amount not less than 8% of their par value as determined by a resolution of the board of directors at the time of their issuance. However, if the dividends on our common shares exceed the dividends on ournon-voting preferred shares, the holders ofnon-voting preferred shares will be entitled to participate in the distribution of such excess amount with the holders of the common shares at an equal rate.

We declare our dividend annually at the annual general meeting of shareholders which is held within three months after the end of the fiscal year. The annual dividend is paid to the shareholders on record as of the end of the fiscal year preceding the annual shareholders’ meeting. Annual dividends may be distributed either in cash or in our shares. However, stock dividends shall be paid based on par value and may not exceed the amount equivalent to a half of the total amount of profit available for dividend payment.

Under the Korean Commercial Code and our Articles of Incorporation, we do not have an obligation to pay any annual dividend unclaimed for five years from the payment date.

The KEPCO Act provides that we shall not pay an annual dividend unless we have made up any accumulated deficit and set aside as a legal reserve an amount equal to 20.0% or more of our net profit until our accumulated reserve reachesone-half of our stated capital.

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Distribution of Free Shares

In addition to dividends in the form of shares to be paid out of retained or current earnings, the Korean Commercial Code permits us to distribute to our shareholders an amount transferred from our capital surplus or legal reserve to stated capital in the form of free shares.

Voting Rights

Holders of our common shares are entitled to one vote for each common share, except that voting rights with respect to any common shares held by us or by a corporate shareholder, more thanone-tenth of whose outstanding capital stock is directly or indirectly owned by us, may not be exercised. Any person (with certain exceptions) who holds more than 3% of our issued and outstanding shares cannot exercise voting rights with respect to the shares in excess of this 3% limit. See “—Limitation on Shareholdings.” Pursuant to the Korean Commercial Code, cumulative voting is permissible in relation to the appointment of directors. Under the Korean Commercial Code, a cumulative vote can be requested by the shareholders of a corporation representing at least 1% of the total voting shares of such corporation if the relevant shareholders’ meeting is intended to elect more than two seats of the board of directors and the request for cumulative voting is made to the management of the corporation in writing at least six weeks in advance of the shareholders’ meeting. Under this new voting method, each shareholder will have multiple voting rights corresponding to the number of directors to be appointed in such voting and may exercise all such voting rights to elect one director. Shareholders are entitled to vote cumulatively unless the Articles of Incorporation expressly prohibit cumulative voting. Our current Articles of Incorporation do not prohibit cumulative voting. Except as otherwise provided by law or our Articles of Incorporation, a resolution can be adopted at a general meeting of shareholders by affirmative majority vote of the voting shares of the shareholders present or represented at a meeting, which must also represent at leastone-fourth of the voting shares then issued and outstanding. The holders of ournon-voting preferred shares (other than enfranchised preferred shares (as described below)) are not entitled to vote on any resolution or to receive notice of any general meeting of shareholders unless the agenda of the meeting includes consideration of a resolution on which such holders are entitled to vote. If we are unable to pay any dividend to holders ofnon-voting preferred shares as provided in our Articles of Incorporation, the holders ofnon-voting preferred shares will become enfranchised and will be entitled to exercise voting rights until such dividends are paid. The holders of these “enfranchised preferred shares” have the same rights as holders of our common shares to request, receive notice of, attend and vote at a general meeting of shareholders. Pursuant to the KEPCO Act and our Articles of Incorporation, the appointment of standing directors, the president and standing statutory auditor are subject to shareholder approval.

Under the Korean Commercial Code, for the purpose of electing our statutory auditor, a shareholder (together with certain related persons) holding more than 3% of the total shares having voting rights may not exercise voting rights with respect to shares in excess of such 3% limit.

The Korean Commercial Code provides that the approval by holders of at leasttwo-thirds of those shares having voting rights present or represented at a meeting, where such shares also represent at leastone-third of the total issued and outstanding shares having voting rights, is required in order to, among other things:

• amend our Articles of Incorporation;

• remove a director or statutory auditor;

• effect any dissolution, merger, consolidation orspin-off of us;

• transfer the whole or any significant part of our business;

• effect the acquisition by us of all of the business of any other company;

• effect the acquisition by us of the business of another company that may have a material effect on our business;

• reduce capital; or

• issue any new shares at a price lower than their par value.

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Under our Articles of Incorporation, an approval by the Ministry of Trade, Industry and Energy is required in order to amend the Articles of Incorporation. Any change to our authorized share capital requires an amendment to our Articles of Incorporation.

In addition, in the case of amendments to our Articles of Incorporation or any merger or consolidation of us or in certain other cases which affect the rights or interests of thenon-voting preferred shares a resolution must be adopted by a meeting of the holders ofnon-voting preferred shares approving such event. This resolution may be adopted if approval is obtained from holders of at leasttwo-thirds of thosenon-voting preferred shares present or represented at such meeting and suchnon-voting preferred shares also represent at leastone-third of our total issued and outstandingnon-voting preferred shares.

A shareholder may exercise his voting rights by proxy. The proxy shall present the power of attorney prior to the start of the general meeting of shareholders. Under the Financial Investment Services and Capital Markets Act and our Articles of Incorporation, no one other than us may solicit a proxy from shareholders.

Subject to the provisions of the deposit agreement, holders of our American Depositary Shares (“ADSs”) are entitled to instruct the depositary, whose agent is the record holder of the underlying common shares, how to exercise voting rights relating to those underlying common shares.

Preemptive Rights and Issuance of Additional Shares

Authorized but unissued shares may be issued at such times and, unless otherwise provided in the Korean Commercial Code, upon such terms as our board of directors may determine. The new shares must be offered on uniform terms to all our shareholders who have preemptive rights and who are listed on the shareholders’ register as of the record date. Subject to the limitations described under “—Limitation on Shareholdings” below and with certain other exceptions, all our shareholders are entitled to subscribe for any newly issued shares in proportion to their existing shareholdings. Under the Korean Commercial Code, we may vary, without shareholder approval, the terms of such preemptive rights for different classes of shares. Public notice of the preemptive rights to new shares and their transferability must be given not less than two weeks (excluding the period during which the shareholders’ register is closed) prior to the record date. Our board of directors may determine how to distribute shares for which preemptive rights have not been exercised or where fractions of shares occur.

Our Articles of Incorporation provide that new shares that are (1) publicly offered pursuant to the Financial Investment Services and Capital Markets Act, (2) issued to members of our employee stock ownership association, (3) represented by depositary receipts, (4) issued through offering to public investors, or (5) issued to investors in kind under the State Property Act may be issued pursuant to a resolution of the board of directors to persons other than existing shareholders, who in such circumstances will not have preemptive rights.

Under our Articles of Incorporation, we may issue convertible bonds or bonds with warrants each up to an aggregate principal amount of Won 2,000 billion and Won 1,000 billion, respectively, to persons other than existing shareholders. However, the aggregate principal amount of convertible bonds and bonds with warrants so issued to persons other than existing shareholders may not exceed Won 2,000 billion.

Under the Financial Investment Services and Capital Markets Act and our Articles of Incorporation, members of our employee stock ownership association, whether or not they are our shareholders, have a preemptive right, subject to certain exceptions, to subscribe for up to 20.0% of any shares publicly offered pursuant to the Financial Investment Services and Capital Markets Act. This right is exercisable only to the extent that the total number of shares so acquired and held by members of our employee stock ownership association does not exceed 20.0% of the total number of shares then outstanding.

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Liquidation Rights

In the event of our liquidation, the assets remaining after payment of all debts, liquidation expenses and taxes will be distributed among shareholders in proportion to the number of shares held. Holders of ournon-voting preferred shares have no preference in liquidation.

Rights of Dissenting Shareholders

In certain limited circumstances (including, without limitation, the transfer of the whole or any significant part of our business or the merger, or consolidation upon asplit-off of us with another company), dissenting holders of shares have the right to require us to purchase their shares. To exercise such right, shareholders must submit a written notice of their intention to dissent to us prior to the general meeting of shareholders or the class meeting of holders ofnon-voting preferred shares, as the case may be. Within 20 days after the date on which the relevant resolution is passed at such meeting, such dissenting shareholders must request us in writing to purchase their shares. We are obligated to purchase the shares of dissenting shareholders within one month after the expiration of such20-day period. The purchase price for such shares must be determined through negotiation between the dissenting shareholders and us. Under the Financial Investment Services and Capital Markets Act, if we cannot agree on a price through negotiation, the purchase price will be the average of (1) the weighted average of the daily share price on the Korea Exchange for atwo-month period before the date of adoption of the relevant board resolution, (2) the weighted average of the daily share price on the Korea Exchange for the one month period before such date and (3) the weighted average of the daily share price on the Korea Exchange for the one week period before such date. However, if we or dissenting shareholders who requested us to purchase their shares oppose such purchase price, the determination of a purchase price may be filed with a court. Holders of ADSs will not be able to exercise dissenter’s rights unless they have withdrawn the underlying Common Stock and become our direct shareholders.

Transfer of Shares

Under the Korean Commercial Code, the transfer of shares is effected by delivery of share certificates, but in order to assert shareholders’ rights against us, the transferee must have his name and address registered on our register of shareholders. For this purpose, shareholders are required to file one’s name, address and seal with our transfer agent. Under our Articles of Incorporation,non-resident shareholders must appoint an agent authorized to receive notices on their behalf in Korea and file a mailing address in Korea. These requirements do not apply to the holders of ADSs. Under current Korean regulations, the Korea Securities Depository, foreign exchange banks (including domestic branches of foreign banks), financial investment companies with a dealing, brokerage or collective investment license and internationally recognized foreign custodians are authorized to act as agents and provide related services for foreign shareholders. Our transfer agent is Kookmin Bank, located at9-1,Namdaemun-ro,2-ga,Chung-ku, Seoul, Korea. Certain foreign exchange controls and securities regulations apply to the transfer of our shares bynon-residents of Korea ornon-Koreans. See Item 9. “The Offer and Listing.”

Acquisition of Our Own Shares

Under the Korean Commercial Code, we may acquire our own shares through (1) purchases on a stock exchange or (2) purchase of the shares in proportion to the number of shares held by each shareholder on equal terms and conditions, by a resolution at a Shareholders’ meeting. The aggregate amount of the acquisition price shall not exceed the excess of our net assets, on anon-consolidated basis, over the sum of (1) our stated capital, (2) the total amount of our capital surplus reserve and earned surplus reserve which have accumulated up to the end of the previous fiscal year, (3) our earned surplus required to be accumulated for the then current fiscal year and (4) our net assets stated in the balance sheet as being increased as a result of the evaluation of the assets and liabilities in accordance with our accounting principles without being set off against any unrealized losses. In addition, under the Korean Commercial Code, we may not acquire our own shares if our net assets may fall short

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of the aggregate amount of the item (1) to (4) above, on anon-consolidated basis, as of the conclusion of the relevant business year of us. In general, our subsidiaries 50% or more of whose shares are owned by us may not acquire our shares.

General Meeting of Shareholders

The ordinary general meeting of our shareholders is held within three months after the end of each fiscal year, and subject to board resolution or court approval, an extraordinary general meeting of our shareholders may be held as necessary or at the request of shareholders holding an aggregate of 1.5% or more of our outstanding common shares for at least six consecutive months. Under the Korean Commercial Code, an extraordinary general meeting of shareholders may be convened at the request of our audit committee, subject to a board resolution or court approval. Holders ofnon-voting preferred shares may only request a general meeting of shareholders once thenon-voting preferred shares have become enfranchised as described under “—Description of Capital Stock—Voting Rights” above. Written notices setting forth the date, place and agenda of the meeting must be given to shareholders at least two weeks prior to the date of the general meeting of shareholders. However, pursuant to the Korean Commercial Code and our Articles of Incorporation, with respect to holders of less than 1% of the total number of our issued and outstanding shares which are entitled to vote, notice may be given by placing at least two public notices at least two weeks in advance of the meeting in at least two daily newspapers published in Seoul or by placing a public notice in the electrical disclosure system of the Financial Supervisory Service or the Korea Exchange, at least two weeks in advance of the meeting. Currently, for giving such notice, we use an electronic disclosure system available for access at a website maintained by the Financial Supervisory Service (known as the Data Analysis, Retrieval and Transfer System, or DART). Shareholders not on the shareholders’ register as of the record date are not entitled to receive notice of the general meeting of shareholders or attend or vote at such meeting. Holders of the enfranchised preferred shares on the shareholders’ register as of the record date are entitled to receive notice of, and to attend and vote at, the general meetings. Otherwise, holders ofnon-voting preferred shares are not entitled to receive notice of general meetings of shareholders or vote at such meetings but may attend such meetings.

The general meeting of shareholders is held in Naju,Jeollanam-do.

Register of Shareholders and Record Dates

Our transfer agent, Kookmin Bank, maintains the register of our shareholders at its office in Seoul, Korea. It registers transfers of our shares on the register of shareholders upon presentation of the share certificates.

The record date for annual dividends is December 31. For the purpose of determining the holders of shares entitled to annual dividends, the register of shareholders may be closed from January 1 to January 31 of each year. Further, the Korean Commercial Code and our Articles of Incorporation permit us at least two weeks’ public notice to set a record date and/or close the register of shareholders for not more than three months for the purpose of determining the shareholders entitled to certain rights pertaining to our shares. The trading of our shares and the delivery of certificates in respect of them may continue while the register of shareholders is closed.

Annual Report

At least one week prior to the annual general meeting of shareholders, our annual report and audited consolidated financial statements must be made available for inspection at our principal office and at all branch offices. Copies of annual reports, the auditednon-consolidated financial statements and any resolutions adopted at the general meeting of shareholders will be available to our shareholders.

Under the Financial Investment Services and Capital Markets Act, we must file with the Financial Services Commission and the Korea Exchange an annual report within 90 days after the end of our fiscal year, a half-year

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report within 45 days after the end of the first six months of our fiscal year and quarterly reports within 45 days after the end of the first three months and nine months of our fiscal year. Following our adoption of IFRS starting in January 1, 2011 pursuant to regulatory requirements for listed companies in Korea, we are required to file half-year and quarterly reports containing interim financial statements and notes thereto on a consolidated basis as well as on a separate basis.

Limitation on Shareholdings

No person other than the Government, our employee stock ownership association and persons who obtain an approval from the Financial Services Commission may hold for its account more than 3% of our total issued and outstanding shares. In calculating shareholdings for this purpose, shares held by your spouse and your certain relatives or by your certain affiliates (such spouses, relatives and affiliates are together referred to as “Affiliated Holders”) are deemed to be held by you. If you hold our shares in violation of this 3% limit, you are not entitled to exercise the voting rights or preemptive rights of our shares in excess of such 3% limit and the Financial Services Commission may order you to take necessary corrective action. In addition, the KEPCO Act currently requires that the Government, directly or through Korea Development Bank, own not less than 51% of our capital. For other restrictions on shareholdings, see Item 9. “The Offer and Listing.”

Change of Control

The KEPCO Act requires that the Government, directly or pursuant to the Korea Development Bank Act, through Korea Development Bank, own not less than 51% of our capital.

Disclosure of Share Ownership

Under the Financial Investment Services and Capital Markets Act, any person whose direct or beneficial ownership of a listed company’s shares with voting rights, equity-related debt securities including convertible bonds, bonds with warrants, exchangeable bonds, certificates representing the rights to subscribe for common shares, derivatives-linked securities and depository receipts of the aforementioned securities (collectively referred to as “Equity Securities”), together with the Equity Securities directly or beneficially owned by certain related persons or by any person acting in concert with the person, accounts for 5% or more of our total outstanding Equity Securities is required to report the status and purpose (in terms of whether the purpose of shareholding is to participate in the management of the issuer) of the holdings and the material contents of the agreements relating to the Equity Securities and other matters prescribed by the Presidential Decree under the Financial Investment Services and Capital Markets Act to the Financial Services Commission of Korea and the Korea Exchange within five business days after reaching the 5% ownership interest threshold.

In addition, any change (i) in the purpose of the shareholding or in the ownership, (ii) the major terms and conditions of agreements relating to Equity Securities owned (such as trust agreements and collateral agreements) to the extent the number of relevant Equity Securities is 1% or more of the total outstanding Equity Securities, or (iii) the type of ownership (direct ownership or holding) to the extent the number of relevant Equity Securities is 1% or more of the total outstanding Equity Securities, must be reported to the Financial Services Commission of Korea and the Korea Exchange within five business days from the date of such change (or by the tenth day of the month following the month in which the change occurs, in the case of a person with no intent to seek management control). Notwithstanding the foregoing, certain professional investors designated by the Financial Services Commission may report such matters to the Financial Services Commission and the Korea Exchange by the tenth day of the month immediately following the end of the quarter in which such 5.0% ownership interest is reached or the change occurs.

When filing a report to the Financial Services Commission and the Korea Exchange in accordance with the reporting requirements described above, a copy of such report must be sent to the relevant listed company. Violation of these reporting requirements may subject a person to sanctions such as prohibition on the exercise of

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voting rights with respect to the Equity Securities for which the reporting requirement was violated or fines or imprisonment. Furthermore, the Financial Services Commission may order the disposal of the Equity Securities for which the reporting requirement was violated or may impose administrative fine.

A person reporting to the Financial Services Commission and the Korea Exchange that his purpose of holding the Equity Securities is to participate in the management of the listed company is prohibited from acquiring additional Equity Securities of the listed company and exercising voting rights during the period commencing from the date on which the event triggering the reporting requirements occurs to the fifth day from the date on which the report is made.

Item 10.C. Material Contracts

None.

Item 10.D. Exchange Controls

General

The Foreign Exchange Transaction Act and the Presidential Decree and regulations under that Act and Decree, or collectively the Foreign Exchange Transaction Laws, regulate investment in Korean securities bynon-residents and issuance of securities outside Korea by Korean companies.Non-residents may invest in Korean securities pursuant to the Foreign Exchange Transaction Laws. The Financial Services Commission has also adopted, pursuant to its authority under the Financial Investment Services and Capital Markets Act, regulations that regulate investment by foreigners in Korean securities and issuance of securities outside Korea by Korean companies.

Subject to certain limitations, the Ministry of Strategy and Finance has the authority to take the following actions under the Foreign Exchange Transaction Laws: (i) if the Government deems it necessary on account of war, armed conflict, natural disaster or grave, sudden and significant changes in domestic or foreign economic circumstances or similar events or circumstances, the Ministry of Strategy and Finance may temporarily suspend performance under any or all foreign exchange transactions, in whole or in part, to which the Foreign Exchange Transaction Laws apply (including suspension of payment and receipt of foreign exchange) or impose an obligation to deposit, safe-keep or sell any instruments of payment to the Bank of Korea or certain other governmental agencies or financial institutions, or effective from July 18, 2017, impose an obligation on resident creditors to collect and recover debts owed bynon-resident debtors,, and (ii) if the Government concludes that the international balance of payments and international financial markets are experiencing or are likely to experience significant disruption or that the movement of capital between Korea and other countries are likely to adversely affect the Korean Won, exchange rates or other macroeconomic policies, the Ministry of Strategy and Finance may take action to require any person who intends to effect or effects a capital transaction to deposit all or a portion of the instruments of payment acquired in such transactions with the Bank of Korea or certain other governmental agencies or financial institutions.

Government Review of Issuances of Debt Securities and ADSs and Report for Payments

In order for us to issue debt securities of any series outside of the Republic, we are required to file a report with our designated foreign exchange bank or the Ministry of Strategy and Finance on the issuance of such debt securities, depending on the issuance amount. The Ministry of Strategy and Finance may at its discretion direct us to take measures as necessary to avoid undue exchange rate fluctuations before it accepts such report. Furthermore, in order for us to make payments of principal of or interest on the debt securities of any series and other amounts as provided in an indenture and such debt securities, we are required to present relevant documents to the designated foreign exchange bank at the time of each actual payment. The purpose of such presentation is to ensure that the actual remittance is consistent with the terms of the transaction reported to our designated foreign exchange bank or the Ministry of Strategy and Finance.

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In order for us to offer for purchase shares of our common stock held in treasury in the form of ADSs or issue shares of our common stock represented by the ADSs, we are required to file a prior report of such offer or issuance with our designated foreign exchange bank or the Ministry of Strategy and Finance, depending on the offering amount. The Ministry of Strategy and Finance may at its discretion direct us to take measures as necessary to avoid undue exchange rate fluctuations before it accepts such report. No further Governmental approval is necessary for the initial offering and issuance of the ADSs.

In order for a depositary to acquire any existing shares of our common stock from holders of these shares of common stock (other than from us) for the purpose of issuance of depositary receipts representing these shares of common stock, the depositary would be required to obtain our consent for the number of shares to be deposited in any given proposed deposit which exceeds the difference between (1) the aggregate number of shares deposited by us or with our consent for the issuance of ADSs (including deposits in connection with the initial and all subsequent offerings of ADSs and stock dividends or other distributions related to these ADSs) and (2) the number of shares on deposit with the depositary at the time of such proposed deposit. We may not grant this consent for the deposit of shares of our common stock in the future, if our consent is required. Therefore, a holder of ADSs who surrenders ADSs and withdraws shares of our common stock may not be permitted subsequently to deposit such shares and obtain ADSs.

In addition, we are also required to notify the Ministry of Strategy and Finance upon receipt of the full proceeds from the offering of ADSs. No additional Governmental approval is necessary for the offering and issuance of ADSs.

Reporting Requirements for Holders of Substantial Interests

Under the Financial Investment Services and Capital Markets Act, any person whose direct beneficial ownership of a listed company’s Equity Securities, together with the Equity Securities beneficially owned by certain related persons or by any person acting in concert with such person, accounts for 5% or more of our total outstanding Equity Securities is required to report the status and purpose (namely, whether the purposes of the share ownership is to participate in the management of the issuer) of the holdings and the material contents of the agreements relating to the Equity Securities and other matters prescribed by the Presidential Decree under the Financial Investment Services and Capital Markets Act to the Financial Services Commission and the Korea Exchange within five business days after reaching the 5% ownership interest and any change in ownership interest subsequent to the report which equals or exceeds 1.0% of the total outstanding Equity Securities is required to be reported to the Financial Services Commission and the Korea Exchange within five business days from the date of the change.

In addition, any change (i) in the purpose of the shareholding or in the ownership, (ii) the major terms and conditions of agreements relating to Equity Securities owned (such as trust agreements and collateral agreements) to the extent the number of relevant Equity Securities is 1% or more of the total outstanding Equity Securities, or (iii) the type of ownership (direct ownership or holding) to the extent the number of relevant Equity Securities is 1% or more of the total outstanding Equity Securities, must be reported to the Financial Services Commission of Korea and the Korea Exchange within five business days from the date of such change (or by the tenth day of the month following the month in which the change occurs, in the case of a person with no intent to seek management control). Notwithstanding the foregoing, certain professional investors designated by the Financial Services Commission may report such matters to the Financial Services Commission and the Korea Exchange by the tenth day of the month immediately following the end of the quarter in which such 5.0% ownership interest is reached or the change occurs.

When filing a report to the Financial Services Commission and the Korea Exchange in accordance with the reporting requirements described above, a copy of such report must be sent to the relevant listed company. Violation of these reporting requirements may subject a person to sanctions such as prohibition on the exercise of voting rights with respect to the Equity Securities for which the reporting requirement was violated or fines or

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imprisonment. Furthermore, the Financial Services Commission may order the disposal of the Equity Securities for which the reporting requirement was violated or may impose administrative fine.

A person reporting to the Financial Services Commission and the Korea Exchange that his purpose of holding the Equity Securities is to participate in the management of the listed company is prohibited from acquiring additional Equity Securities of the listed company and exercising voting rights during the period commencing from the date on which the event triggering the reporting requirements occurs to the fifth day from the date on which the report is made.

In addition to the reporting requirements described above, any person whose direct or beneficial ownership of our voting stock and/or depository receipts for our voting stock accounts for 10.0% or more of the total issued and outstanding voting stock, whom we refer to as a major shareholder, must file a report to the Securities and Futures Commission and to the Korea Exchange within five business days after the date on which the person reached such shareholding limit. In addition, such person must file a report to the Securities and Futures Commission and to the Korea Exchange regarding any subsequent change in his/her shareholding. Such report on subsequent change in shareholding must be filed within five business days of the occurrence of any such change. Violation of these reporting requirements may subject a person to criminal sanctions such as fines and imprisonment.

Restrictions Applicable to ADSs

No Governmental approval is necessary for the sale and purchase of ADSs in the secondary market outside Korea or for the withdrawal of shares of our common stock underlying ADSs and the delivery inside Korea of the withdrawn shares. However, a foreigner who intends to acquire shares must obtain an Investment Registration Card from the Financial Supervisory Service as described below. The acquisition of shares by a foreigner must be reported by the foreigner or his standing proxy in Korea immediately to the Governor of the Financial Supervisory Service.

Special Reporting Requirement for Companies Whose Securities Are Listed on Foreign Exchanges

Under the regulations of the Financial Services Commission and the Korea Exchange, (i) if a company listed on the Korea Exchange has submitted a public disclosure of material matters to a foreign financial investment supervisory authority pursuant to the laws of the foreign jurisdiction, then it must submit a copy of the public disclosure and a Korean translation thereof to the Financial Services Commission of Korea and the Korea Exchange, and (ii) if a company listed on the Korea Exchange is approved for listing on a foreign stock market or determined to bede-listed from the foreign stock market or actually listed on, orde-listed from, a foreign stock market, then it must submit a copy of any document, which it submitted to or received from the relevant foreign government, foreign financial investment supervisory authority or the foreign stock market, and a Korean translation thereof to the Financial Services Commission of Korea and the Korea Exchange.

Persons who have acquired shares of our common stock as a result of the withdrawal of shares of common stock underlying ADSs may exercise their preemptive rights for new shares, participate in free distributions and receive dividends on shares of our common stock without any further governmental approval.

Restrictions Applicable to Common Stock

Under the Foreign Exchange Transaction Laws and the Regulations on Financial Investment Business (together, the “Investment Rules”), foreigners are permitted to invest, subject to certain exceptions and procedural requirements, in all shares of Korean companies unless prohibited by specific laws. Foreign investors may trade shares listed on the Korea Exchange only through the Korea Exchange except for certain limited circumstances. These circumstances include, among others,(1) odd-lot trading of shares, (2) acquisition of shares by a foreign company as a result of a merger, (3) acquisition or disposal of shares in connection with a tender

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offer, (4) acquisition of shares by exercise of warrant, conversion right under convertible bonds, exchange right under exchangeable bonds or withdrawal right under depositary receipts issued outside of Korea by a Korean company, such shares being “Converted Shares,” (5) acquisition of shares through exercise of rights under securities issued outside of Korea, (6) acquisition of shares as a result of inheritance, donation, bequest or exercise of shareholders’ rights (including preemptive rights or rights to participate in free distributions and receive dividends), (7)over-the-counter transactions between foreigners of a class of shares for which a ceiling on aggregate acquisition by foreigners (as explained below) exists and has been reached or exceeded, (8) acquisition of shares by direct investment under the Foreign Investment Promotion Law, (9) acquisition and disposal of shares on an overseas stock exchange market, if such shares are simultaneously listed on the KRX KOSPI Market or the KRX KOSDAQ Market of the Korea Exchange and such overseas stock exchange, and (10) arm’s length transactions between foreigners in the event all such foreigners belong to an investment group managed by the same person. Forover-the-counter transactions of shares listed on the Korea Exchange outside the Korea Exchange between foreigners of a class of shares for which a ceiling on aggregate acquisition by foreigners exists and has been reached or exceeded, a financial investment company with a brokerage license in Korea must act as an intermediary.Odd-lot trading of shares listed on the Korea Exchange outside the Korea Exchange must involve a financial investment company with a dealing license in Korea as the other party. Foreign investors are prohibited from engaging in margin transactions with respect to shares subject to a ceiling on acquisition by foreigners.

The Investment Rules require a foreign investor who wishes to invest in or dispose of shares on the Korea Exchange (including Converted Shares) to register his/her identity with the Financial Supervisory Service prior to making any such investment or disposal unless he/she had previously registered. However, such registration requirement does not apply to foreign investors who acquire Converted Shares with the intention of selling them within three months from the date they were acquired. Upon registration, the Financial Supervisory Service will issue to the foreign investor an Investment Registration Card which must be presented each time the foreign investor opens a brokerage account with a financial investment company or financial institution in Korea. Foreigners eligible to obtain an Investment Registration Card include any foreign nationals who are individuals (with residence abroad for six months or more), foreign governments, foreign municipal authorities, foreign public institutions, international financial institutions or similar international organizations, corporations incorporated under foreign laws and any person in any additional category designated by the Decree of the Financial Services and Capital Markets Act. All Korean branches of a foreign corporation as a group are treated as a separate foreigner from the head office of the foreign corporation. However, a foreign branch of a Korean securities company, a foreign corporation or a depositary issuing depositary receipts may obtain one or more Investment Registration Cards in its name in certain circumstances as described in the relevant regulations.

Upon a foreign investor’s purchase of shares through the Korea Exchange, no separate report by the investor is required because the Investment Registration Card system is designed to control and oversee foreign investment through a computer system. However, a foreign investor’s acquisition or sale of shares outside the Korea Exchange (as discussed above) must be reported by the foreign investor or his standing proxy to the Governor of the Financial Supervisory Service at the time of each acquisition or sale. However, a foreign investor must ensure that any acquisition or sale by it of shares outside the Korea Exchange in the case of trades in connection with a tender offer,odd-lot trading of shares or trades of a class of shares for which the aggregate foreign ownership limit has been reached or exceeded, is reported to the Governor of the Financial Supervisory Service by the Korea Securities Depository, financial investment companies with a dealing or brokerage license or securities finance companies engaged to facilitate such transactions. In the event a foreign investor desires to acquire or sell shares outside the Korea Exchange and the circumstances in connection with such sale or acquisition do not fall within the exceptions made for certain limited circumstances described above, then the foreign investor must obtain the prior approval of the Governor. In addition, in the event a foreign investor acquires or sells shares outside the Korea Exchange, a prior report to the Governor of the Financial Supervisory Service may also be required in certain circumstances. A foreign investor may appoint one or more standing proxies from among the Korea Securities Depository, foreign exchange banks (including domestic branches of foreign banks), financial investment companies with a dealing, brokerage or collective investment license and

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certain eligible foreign custodians which will exercise shareholders’ rights or perform any matters related to the foregoing activities if the foreign investor does not perform these activities himself. However, a foreign investor may be exempted from complying with these standing proxy rules with the approval of the Governor of the Financial Supervisory Service in cases deemed inevitable by reason of conflict between the laws of Korea and those of the home country of the foreign investor.

Certificates evidencing shares of Korean companies must be kept in custody with an eligible custodian in Korea, the Korea Securities Depository, foreign exchange banks (including domestic branches of foreign banks), financial investment companies with a dealing, brokerage or collective investment license and certain eligible foreign custodians are eligible to be a custodian of shares for anon-resident or foreign investor. A foreign investor must ensure that his custodian deposits his shares with the Korea Securities Depository. Generally, a foreign investor may not permit any person, other than his/her standing proxy, to exercise rights relating to his shares or perform any tasks related thereto on his behalf. However, a foreign investor may be exempted from complying with this deposit requirement with the approval of the Governor of the Financial Supervisory Service in circumstances where compliance is made impracticable, including cases where such compliance would contravene the laws of the home country of the foreign investor.

Under the Investment Rules, with certain exceptions, a foreign investor may acquire shares of a Korean company without being subject to any single or aggregate foreign investment ceiling. However, certain designated public corporations are subject to a 40.0% ceiling on acquisitions of shares by foreigners in the aggregate and a ceiling on acquisitions of shares by a single foreign investor provided in the Articles of Incorporation of such corporations. Of the Korean companies listed on the Korea Exchange, we are so designated. The Financial Services Commission may impose other restrictions as it deems necessary for the protection of investors and the stabilization of the Korean securities and derivatives market. Generally, the ownership of Converted Shares constitutes foreign ownership for purposes of such aggregate foreign ownership limit. However, the acquisition of Converted Shares is one of the exceptions under which foreign investors may acquire shares of designated corporations in excess of the 40.0% ceiling.

In addition to the aggregate foreign investment ceiling set by the Financial Services Commission under authority of the Financial Investment Services and Capital Markets Act, our Articles of Incorporation set a 3% ceiling on acquisition by a single investor (whether domestic or foreign) of the shares of our common stock. Any person (with certain exceptions) who holds more than 3% of our issued and outstanding shares cannot exercise voting rights with respect to our shares in excess of this 3% limit.

The ceiling on aggregate investment by foreigners applicable to us may be exceeded in certain limited circumstances, including as a result of acquisition of:

• shares by a depositary issuing depositary receipts representing such shares (whether newly issued shares or outstanding shares);

• Converted Shares;

• shares from the exercise of shareholders’ rights; or

• shares by gift, inheritance or bequest.

A foreigner who has acquired shares in excess of any ceiling described above may not exercise his voting rights with respect to the shares exceeding such limit and the Financial Services Commission may take necessary corrective action against him.

Under the Foreign Exchange Transaction Laws, a foreign investor who intends to acquire shares must designate a foreign exchange bank at which he must open a foreign currency account and a Won account exclusively for stock investments. No approval is required for remittance into Korea and deposit of foreign currency funds in the foreign currency account. Foreign currency funds may be transferred from the foreign

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currency account at the time required to place a deposit for, or settle the purchase price of, a stock purchase transaction to a Won account opened at a securities company. Funds in the foreign currency account may be remitted abroad without any governmental approval.

Dividends on shares of our common stock are paid in Won. No governmental approval is required for foreign investors to receive dividends on, or the Won proceeds of the sale of, any shares to be paid, received and retained in Korea. Dividends paid on, and the Won proceeds of the sale of, any shares held by anon-resident of Korea must be deposited either in a Won account with the investor’s securities company or the investor’s Won account. Funds in the investor’s Won account may be transferred to his foreign currency account or withdrawn for local living expenses, provided that any withdrawal of local living expenses in excess of a certain amount should be reported to the Governor of the Financial Supervisory Service. Funds in the investor’s Won account may also be used for future investment in shares or for payment of the subscription price of new shares obtained through the exercise of preemptive rights.

Financial investment companies with a securities dealing, brokerage or collective investment license are allowed to open foreign currency accounts with foreign exchange banks exclusively for accommodating foreign investors’ stock investments in Korea. Through these accounts, these securities companies and asset management companies may enter into foreign exchange transactions on a limited basis, such as conversion of foreign currency funds and Won funds, either as a counterparty to or on behalf of foreign investors without the foreign investors having to open their own accounts with foreign exchange banks.

Item 10.E. Taxation

Korean Taxes

The following summary describes the material Korean tax consequences of ownership of the Registered Debt Securities and ADSs. Persons considering the purchase of the Registered Debt Securities or ADSs should consult their own tax advisors with regard to the application of the Korean income tax laws to their particular situations as well as any tax consequences arising under the laws of any other taxing jurisdiction. Reference is also made to a tax treaty between the Republic and the United States entitled “Convention Between the Government of the Republic of Korea and the Government of the United States of America for the Avoidance of Double Taxation and the Prevention of Fiscal Evasion with Respect to Taxes on Income and the Encouragement of International Trade and Investment,” signed on June 4, 1976 and entered into force on October 20, 1979.

The following summary of Korean tax considerations applies to you so long as you are not:

• a resident of Korea;

• a corporation having its head office, principal place of business or place of effective management in Korea; or

• engaged in a trade or business in Korea through a permanent establishment or a fixed base to which the relevant income is attributable or with which the relevant income is effectively connected.

Registered Debt Securities

Taxation of Interest

Pursuant to the Special Tax Treatment Control Law (“STTCL”), when we make payments of interest to you on the Registered Debt Securities, no amount will be withheld from such payments for, or on account of, any income taxes of any kind imposed, levied, withheld or assessed by Korea or any political subdivision or taxing authority thereof or therein, provided that Registered Debt Securities are deemed to be foreign currency-denominated bonds issued outside of Korea for the purpose of the STTCL.

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If the tax exemption under the STTCL referred to above were to cease to be in effect, the rate of income tax or corporation tax applicable to the interest on the Registered Debt Securities would be 14% of income for anon-resident without a permanent establishment in Korea. In addition, local income tax would be imposed at the rate of 10.0% of the income tax or corporation tax (which would increase the total tax rate to 15.4%), unless reduction is available under an applicable income tax treaty. If you are a qualified resident in a country that has entered into a tax treaty with Korea, you may qualify for an exemption or a reduced rate of Korean withholding tax. See the discussion under “—Shares or ADSs—Tax Treaties” below for an additional explanation on treaty benefits.

In order to obtain the benefits of an exemption or a reduced withholding tax rate under a tax treaty, you must submit to us, prior to the interest payment date, such evidence of tax residence as may be required by the Korean tax authorities in order to establish your entitlement to the benefits of the applicable tax treaty.

Furthermore, Korean tax laws require the beneficial owner to submit an application for entitlement to a preferential tax rate together with evidence of tax residence (including a certificate of tax residence of the beneficial owner issued by a competent authority of the country of tax residence of the beneficial owner) to a withholding obligor paying Korean source income in order to benefit from the available reduced tax rate pursuant to the relevant tax treaty. Under Korean tax laws and subject to certain exceptions, an overseas investment vehicle (which is defined as an organization established in a foreign jurisdiction that manages funds collected through investment solicitation by acquiring, disposing or otherwise investing in proprietary targets and then distributes the proceeds thereof to investors) (the “Overseas Investment Vehicle”) must obtain an application for a preferential tax rate from the beneficial owner and forward it to the withholding obligor along with an overseas investment vehicle report (prepared by the Overseas Investment Vehicle) which includes a detailed statement on the beneficial owner.

Taxation of Capital Gains

Korean tax laws currently exclude from Korean taxation gains made by anon-resident without permanent establishment in Korea from the sale of a Registered Debt Security to anothernon-resident (except where anon-resident sells Registered Debt Securities to anothernon-resident who has permanent establishments in Korea, if any). In addition, capital gains realized from the transfer of Registered Debt Securities outside Korea bynon-residents with or without permanent establishments in Korea are currently exempt from taxation by virtue of the STTCL, provided that the issuance of such Registered Debt Securities is deemed to be an overseas issuance of foreign currency-denominated bonds under the STTCL. If you sell or otherwise dispose of a Registered Debt Security through other ways than those mentioned above, any gain realized on the transaction will be taxable at ordinary Korean withholding tax rates (which is the lesser of 22.0% (including local income tax) of the net gain or 11.0% (including local income tax) of the gross sale proceeds, subject to the production of satisfactory evidence of the acquisition cost of such Registered Debt Securities and certain direct transaction costs attributable to the disposal of such Registered Debt Securities), unless an exemption is available under an applicable income tax treaty. See the discussion under “—Shares or ADSs—Tax Treaties” below for an additional explanation on treaty benefits.

Inheritance Tax and Gift Tax

If you die while you are the holder of Registered Debt Securities, the subsequent transfer of the Registered Debt Securities by way of succession will be subject to Korean inheritance tax. Similarly, if you transfer Registered Debt Securities as a gift, the donee will be subject to Korean gift tax and you may be required to pay the gift tax if the donee fails to do so.

At present, Korea has not entered into any tax treaty relating to inheritance or gift taxes.

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Shares or ADSs

Dividends on the Shares of Common Stock or ADSs

We will deduct Korean withholding tax from dividends (whether in cash or in shares) paid to you at a rate of 22% (inclusive of local income tax). If you are a qualified resident in a country that has entered into a tax treaty with Korea, you may qualify for a reduced rate of Korean withholding tax. See the discussion under “—Tax Treaties” below for an additional explanation on treaty benefits.

In order to obtain the benefits of a reduced withholding tax rate under a tax treaty, you must submit to us, prior to the dividend payment date, such evidence of tax residence as may be required by the Korean tax authorities in order to establish your entitlement to the benefits of the applicable tax treaty. Evidence of tax residence may be submitted to us through the ADS depositary. If we distribute to you free shares representing a transfer of certain capital reserves or asset revaluation reserves intopaid-in capital, such distribution may be subject to Korean withholding tax.

Furthermore, Korean tax laws require the beneficial owner to submit an application for entitlement to a preferential tax rate together with evidence of tax residence (including a certificate of tax residence of the beneficial owner issued by a competent authority of the country of tax residence of the beneficial owner) to a withholding obligor paying Korean source income in order to benefit from the available reduced tax rate pursuant to the relevant tax treaty. Under Korean tax laws and subject to certain exceptions, the Overseas Investment Vehicle must obtain an application for entitlement to a preferential tax rate from the beneficial owner and forward it to the withholding obligor along with an overseas investment vehicle report (prepared by the Overseas Investment Vehicle) which includes a detailed statement on the beneficial owner.

If you hold common shares or ADSs and receive the dividend through an account at the Korea Securities Depository held by a foreign depositary settlement institute, you are not required to submit the application for entitlement to a preferential tax rate. However, evidence of tax residence may need to be submitted to us through such foreign depositary settlement institute.

Taxation of Capital Gains

As a general rule, capital gains earned bynon-residents upon the transfer of the common shares or ADSs would be subject to Korean income tax at a rate equal to the lesser of (i) 11.0% (including local income tax) of the gross proceeds realized or (ii) 22.0% (including local income tax) of the net realized gain (subject to the production of satisfactory evidence of the acquisition costs and certain direct transaction costs arising out of the transfer of such common shares or ADSs), unless suchnon-resident is exempt from Korean income taxation under an applicable Korean tax treaty into which Korea has entered with thenon-resident’s country of tax residence. Please see the discussion under “—Tax Treaties” below for an additional explanation on treaty benefits. Even if you do not qualify for any exemption under a tax treaty, you will not be subject to the foregoing income tax on capital gains if you qualify for the relevant Korean domestic tax law exemptions discussed in the following paragraphs.

You will not be subject to Korean income taxation on capital gains realized upon the transfer of our common stocks or ADSs through the Korea Exchange if you (i) have no permanent establishment in Korea and (ii) did not own or have not owned (together with any shares owned by any entity which you have a certain special relationship with and possibly including the shares represented by the ADSs) 25.0% or more of our total issued and outstanding shares at any time during the calendar year in which the sale occurs and during the five calendar years prior to the calendar year in which the sale occurs.

It should be noted that (i) capital gains earned by you (regardless of whether you have a permanent establishment in Korea) from the transfer of ADSs outside Korea will be exempted from Korean income taxation provided that ADSs are deemed to have been issued overseas under the STTCL, but (ii) if and when an owner of the underlying shares of stock transfers ADSs after conversion of the underlying shares into ADSs, the exemption described in (i) is not applicable.

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If you are subject to tax on capital gains with respect to the sale of ADSs, or of shares of common stock which you acquired as a result of a withdrawal, the purchaser or, in the case of the sale of shares of common stock on the Korea Exchange or through an investment dealer or investment broker under the Financial Investment Services and Capital Markets Act, an investment dealer or investment broker is required to withhold Korean tax from the sales price in an amount equal to 11.0% (including local income tax) of the gross realization proceeds and to make payment of these amounts to the Korean tax authority, unless you establish your entitlement to an exemption under an applicable tax treaty or domestic tax law or produce satisfactory evidence of your acquisition cost and transaction costs for the shares of common stock or the ADSs.

However, if you transfer the ADSs following an exchange of the underlying shares of stock owned by you for ADSs to a purchaser who is anon-residents or a foreign company without permanent establishment in Korea, you are obligated to file an income tax return and pay tax on gain realized from such transfer unless exempt under an applicable tax treaty or domestic law. Further, if you transfer the shares of common stock outside of Korea (excluding a transfer on a foreign exchange) tonon-residents or foreign companies without having permanent establishments in Korea, you are obligated to file an income tax return and pay income tax on capital gain realized from such transfer unless exempt under an applicable tax treaty or domestic law. If a purchaser or an investment dealer or investment broker, as the case may be, withholds and remits the tax on capital gains derived from transfer of shares of common stock or ADSs, your obligation to file an income tax return and pay income tax will be exempt.

In order to obtain the benefit of an exemption from tax pursuant to a tax treaty, you must submit to the purchaser or the investment dealer or the investment broker, or through the ADS depositary, as the case may be, prior to or at the time of payment, such evidence of your tax residence as the Korean tax authorities may require in support of your claim for treaty benefits. Please see the discussion under “—Tax Treaties” below for an additional explanation on claiming treaty benefits. Furthermore, Korean tax laws require the beneficial owner to submit an application for tax exemption together with evidence of tax residence (including a certificate of tax residence of the beneficial owner issued by a competent authority of the country of tax residence of the beneficial owner) to a withholding obligor paying Korean source income in order to benefit from the available exemption pursuant to the relevant tax treaty. Under Korean tax laws and subject to certain exceptions, the Overseas Investment Vehicle must obtain an application for tax exemption from the beneficial owner and forward it to the withholding obligor along with an overseas investment vehicle report (prepared by the Overseas Investment Vehicle) which includes a detailed statement on the beneficial owner.

Tax Treaties

Korea has entered into a number of income tax treaties with other countries (including the United States), which would reduce or exempt Korean withholding tax on dividends on, and capital gains on transfer of, shares of our common stock or ADSs. For example, under the Korea-United States income tax treaty, reduced rates of Korean withholding tax of 16.5% or 11.0% (respectively, including local income tax, depending on your shareholding ratio) on dividends and an exemption from Korean withholding tax on capital gains are available to residents of the United States that are beneficial owners of the relevant dividend income or capital gains. However, under Article 17 (Investment of Holding Companies) of the Korea-United States income tax treaty, such reduced rates and exemption do not apply if (i) you are a United States corporation, (ii) by reason of any special measures, the tax imposed on you by the United States with respect to such dividends or capital gains is substantially less than the tax generally imposed by the United States on corporate profits, and (iii) 25.0% or more of your capital is held of record or is otherwise determined, after consultation between competent authorities of the United States and Korea, to be owned directly or indirectly by one or more persons who are not individual residents of the United States. Also, under Article 16 (Capital Gains) of the Korea-United States income tax treaty, the exemption on capital gains does not apply if you are an individual, and (a) you maintain a fixed base in Korea for a period or periods aggregating 183 days or more during the taxable year and your ADSs or shares of common stock giving rise to capital gains are effectively connected with such fixed base or (b) you are present in Korea for a period or periods of 183 days or more during the taxable year.

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You should inquire for yourself whether you are entitled to the benefit of an income tax treaty with Korea. It is the responsibility of the party claiming the benefits of an income tax treaty in respect of dividend payments or capital gains to submit to us, the purchaser or the investment dealer or the investment broker, as applicable, a certificate as to his tax residence. In the absence of sufficient proof, we, the purchaser or the investment dealer or the investment broker, as applicable, must withhold tax at the normal rates. Further, in order for you to obtain the benefit of a tax exemption on certain Korean source income (e.g., interest, dividends and capital gains) under an applicable tax treaty, Korean tax laws require you (or your agent) to submit an application for tax exemption (if there is no change in the content of such application, it is not required to submit such application again within a period of three years thereafter) along with a certificate of your tax residence issued by a competent authority of your country of tax residence. Under Korean tax laws and subject to certain exceptions, the Overseas Investment Vehicle must obtain an application for tax exemption from the beneficial owner and forward it to the withholding obligor along with an overseas investment vehicle report (prepared by the Overseas Investment Vehicle) which includes a detailed statement on the beneficial owner. The withholding obligor must submit the application and the report to the relevant tax office by the ninth day of the month following the date of the first payment of such income.

Furthermore, the Korean tax laws require the beneficial owner to submit an application for entitlement to a preferential tax rate (if there is no change in the content of such application, it is not required to submit such application again within a period of three years thereafter) together with evidence of tax residence (including a certificate of tax residence of the beneficial owner issued by a competent authority of the country of tax residence of the beneficial owner) to a withholding obligor paying Korean source income in order to benefit from the available reduced tax rate pursuant to the relevant tax treaty. If you hold the shares of common stock or ADSs and receive the dividend through an account at the Korea Securities Depository held by a foreign depositary settlement institute, you are not required to submit the application for entitlement to a preferential tax rate. However, evidence of tax residence may need to be submitted to us through such foreign depositary settlement institute.

Under Korean tax laws and subject to certain exceptions, the Overseas Investment Vehicle must obtain an application for a preferential tax rate from the beneficial owner and forward it to the withholding obligor along with an overseas investment vehicle report (prepared by the Overseas Investment Vehicle) which includes a detailed statement on the beneficial owner.

Inheritance Tax and Gift Tax

If you die while holding an ADS or donate an ADS, it is unclear whether, for Korean inheritance and gift tax purposes, you will be treated as the owner of the shares of common stock underlying the ADSs. If the tax authority interprets depositary receipts as the underlying share certificates, you may be treated as the owner of the shares of common stock and your heir or the donee (or in certain circumstances, you as the donor) will be subject to Korean inheritance or gift tax presently at the rate of 10.0% to 50.0%, depending on the value of the ADSs or shares of common stock.

If you die while holding a share of common stock or donate a share of common stock, your heir or donee (or in certain circumstances, you as the donor) will be subject to Korean inheritance or gift tax at the same rate as indicated above.

At present, Korea has not entered into any tax treaty relating to inheritance or gift taxes.

Securities Transaction Tax

If you transfer shares of common stock on the Stock Market of the Korea Exchange, you will be subject to securities transaction tax at the rate of 0.15% and an agriculture and fishery special surtax at the rate of 0.15% of

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the sale price of the shares of common stock. If your transfer of the shares of common stock is not made on the Stock Market of the Korea Exchange, subject to certain exceptions you will be subject to securities transaction tax at the rate of 0.5% and will not be subject to an agriculture and fishery special surtax.

Under the Securities Transaction Tax Law, depositary receipts (such as ADSs) constitute share certificates subject to the securities transaction tax. However, a transfer of depositary receipts listed on the New York Stock Exchange, NASDAQ National Market or other qualified foreign exchanges will be exempt from the securities transaction tax although depositary receipts, including ADSs, constitute share certificates subject to the securities transaction tax.

In principle, the securities transaction tax, if applicable, must be paid by the transferor of the shares or rights. When the transfer is effected through the Korea Securities Depository, the Korea Securities Depository is generally required to withhold and pay the tax to the tax authorities. When such transfer is made through an investment dealer or investment broker under the Financial Investment Services and Capital Markets Act only, such investment dealer or investment broker is required to withhold and pay the tax. Where the transfer is effected by anon-resident without a permanent establishment in Korea, other than through the Korea Securities Depository or an investment dealer or investment broker, the transferee is required to withhold the securities transaction tax for payment to the Korean tax authority.

U.S. Federal Income and Estate Tax Considerations for U.S. Persons

The following is a summary of certain U.S. Federal income and estate tax consequences for beneficial owners of the Registered Debt Securities, common stock and ADSs that are “U.S. Persons (as defined below).” For purposes of this summary, you are a “U.S. Person” if you are any of the following for U.S. Federal income tax purposes:

• an individual citizen or resident of the United States;

• a corporation, or other entity treated as a corporation for U.S. Federal income tax purposes, created or organized in or under the laws of the United States, any state thereof or the District of Columbia;

• an estate the income of which is subject to U.S. Federal income taxation regardless of its source; or

• a trust if (1) it is subject to the primary supervision of a court within the United States and one or more United States persons have the authority to control all substantial decisions of the trust or (2) it has a valid election in effect under applicable United States Treasury regulations to be treated as a United States person.

This summary is based on current law, which is subject to change (perhaps retroactively), is for general purposes only and should not be considered tax advice. This summary does not represent a detailed description of the U.S. Federal income and estate tax consequences and does not address the effects of the Medicare contribution tax on net investment income or foreign, state, local or other tax considerations that may be relevant to you in light of your particular circumstances. The discussion set forth below is applicable to you if (i) you are a resident of the United States for purposes of the current income tax treaty between the United States and Korea (the “Treaty”), (ii) your Registered Debt Securities, common stock or ADSs are not, for purposes of the Treaty, effectively connected with a permanent establishment in Korea and (iii) you otherwise qualify for the full benefits of the Treaty. Except where noted, this summary deals only with Registered Debt Securities, common stock or ADSs held as capital assets, and it does not represent a detailed description of the U.S. Federal income and estate tax consequences applicable to you if you are subject to special treatment under the U.S. Federal income tax laws (including if you are a dealer in securities or currencies, a financial institution, a regulated investment company, a real estate investment trust, an insurance company, a tax-exempt organization, a person holding the Registered Debt Securities, common stock or ADSs as part of a hedging, integrated or conversion transaction, constructive sale or straddle, a person owning 10.0% or more of our voting stock, a trader in securities that elects to use amark-to-market method of accounting for your securities holdings, a person liable

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for the alternative minimum tax, an investor in a pass-through entity, or a U.S. Person whose “functional currency” is not the U.S. dollar). We cannot assure you that a change in law will not alter significantly the tax considerations that we describe in this summary.

If a partnership holds the Registered Debt Securities, common stock or ADSs, the tax treatment of a partner will generally depend upon the status of the partner and the activities of the partnership. If you are a partner of a partnership holding our Registered Debt Securities, common stock, or ADSs, you should consult your tax advisor.

Because of the100-year maturity of the One Hundred Year 7.95%Zero-to-Full Debentures, due April 1, 2096 (the “ZTF Debentures”), it is not certain whether the ZTF Debentures will be treated as debt for U.S. Federal income tax purposes. The discussion below assumes that the ZTF Debentures (as well as the other Registered Debt Securities) will be treated as debt, except that a summary of the consequences to you if the ZTF Debentures were not treated as debt is provided under “Tax Consequences with Respect to Registered Debt Securities Generally—ZTF Debentures Treated as Equity” below.

The discussion of the tax consequences of ownership of common stock and ADSs below, is based, in part, upon representations made by the Depositary to us and assumes that the deposit agreement, and all other related agreements, will be performed in accordance with their terms.

You should consult your own tax advisor concerning the particular U.S. Federal income and estate tax consequences to you of the ownership of the Registered Debt Securities, common stock and ADSs, as well as the consequences to you arising under the laws of any other taxing jurisdiction.

Tax Consequences with Respect to Registered Debt Securities Generally

Payments

Except as provided below with regard to original issue discount (as defined below) on the ZTF Debentures, interest on a Registered Debt Security will generally be taxable to you as ordinary income at the time it is paid or accrued in accordance with your method of accounting for tax purposes. Principal payments on an amortizing Registered Debt Security generally will constitute atax-free return of capital to you.

Although interest payments to you are currently exempt from Korean taxation provided that Registered Debt Securities are deemed to be foreign currency-denominated bonds issued outside of Korea for the purpose of the STTCL (see—“Korean Taxes—Registered Debt Securities—Taxation of Interest,” above), if the Korean law providing for the exemption is repealed, then, in addition to interest payments on the Registered Debt Securities and original issue discount on the ZTF Debentures, you will be required to include in income any additional amounts paid and any Korean tax withheld from interest payments notwithstanding that you in fact did not receive such withheld tax. You may be entitled to deduct or credit such Korean tax (up to the Treaty rate), subject to applicable limitations in the Internal Revenue Code of 1986, as amended (the “Code”). Your election to deduct or credit foreign taxes will apply to all of your foreign taxes for a particular taxable year. Interest income on a Registered Debt Security (including additional amounts and any Korean taxes withheld in respect thereof) and original issue discount on a ZTF Debenture generally will constitute foreign source income and generally will be considered passive category income for purposes of computing the foreign tax credit. You will generally be denied a foreign tax credit for Korean taxes imposed with respect to the Registered Debt Securities where you do not meet a minimum holding period requirement during which you are not protected from risk of loss. The rules governing the foreign tax credit are complex. Investors are urged to consult their tax advisors regarding the availability of the foreign tax credit under their particular circumstances.

Original Issue Discount

The ZTF Debentures were issued with original issue discount (“OID”) for U.S. Federal income tax purposes equal to the difference between (i) the sum of all scheduled amounts payable on the ZTF Debentures (including

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the interest payable on such ZTF Debentures) and (ii) the “issue price” of the ZTF Debentures. The “issue price” of each ZTF Debenture is the first price at which a substantial amount of the ZTF Debentures was sold to the public (other than to an underwriter, broker, placement agent or wholesaler). If you hold ZTF Debentures, then (subject to the discussion in “—Bond Premium” below) you generally must include OID in gross income in advance of the receipt of cash attributable to that income, regardless of your method of accounting. However, you generally will not be required to include separately in income cash payments received on the ZTF Debentures, even if denominated as interest.

The amount of OID includible in income by the holder of a ZTF Debenture is the sum of the “daily portions” of OID with respect to the ZTF Debenture for each day during the taxable year or portion of the taxable year in which such holder held such ZTF Debenture, or accrued OID (for a discussion relevant to subsequent purchasers, see “—Market Discount” and “—Bond Premium,” below). The daily portion is determined by allocating to each day in any “accrual period” a pro rata portion of the OID allocable to that accrual period. The “accrual period” for a ZTF Debenture may be of any length and may vary in length over the term of the ZTF Debenture, provided that each accrual period is no longer than one year and each scheduled payment of principal or interest occurs on the first day or the final day of an accrual period. The amount of OID allocable to any accrual period other than the final accrual period is an amount equal to the product of the ZTF Debenture’s adjusted issue price at the beginning of such accrual period and its yield to maturity (determined on the basis of compounding at the close of each accrual period and properly adjusted for the length of the accrual period). OID allocable to a final accrual period is the difference between the amount payable at maturity and the adjusted issue price at the beginning of the final accrual period. The “adjusted issue price” of a ZTF Debenture at the beginning of any accrual period is equal to its issue price increased by the accrued OID for each prior accrual period (for subsequent purchasers, determined without regard to the amortization of any acquisition or bond premium, as described below) and reduced by any payments previously made on such ZTF Debenture. Under these rules, you will have to include in income increasingly greater amounts of OID in successive accrual periods. We are required to provide information returns stating the amount of OID accrued on ZTF Debentures held of record by persons other than corporations and other exempt holders.

As discussed above, although interest payments to you are currently exempt from Korean taxation provided that Registered Debt Securities are deemed to be foreign currency-denominated bonds issued outside of Korea for the purpose of the STTCL (see—“Korean Taxes—Registered Debt Securities—Taxation of Interest,” above), if the Korean law providing for the exemption is repealed, then Korean withholding tax may be imposed at times that differ from the times at which you are required to include interest or OID in income for U.S. Federal income tax purposes and this disparity may limit the amount of foreign tax credit available.

Market Discount

If you purchased a Registered Debt Security other than a ZTF Debenture for an amount that is less than its stated redemption price at maturity, or, in the case of a ZTF Debenture, its adjusted issue price, the amount of the difference will be treated as “market discount” for U.S. Federal income tax purposes, unless that difference is less than a specified de minimis amount. Under the market discount rules, you will be required to treat any payment, other than qualified stated interest (as defined in the Code), on, or any gain on the sale, exchange, retirement or other disposition of, a Registered Debt Security as ordinary income to the extent of the market discount that you have not previously included in income and are treated as having accrued on the Registered Debt Security at the time of its payment or disposition. In addition, you may be required to defer, until the maturity of the Registered Debt Security or its earlier disposition in a taxable transaction, the deduction of all or a portion of the interest expense on any indebtedness attributable to the Registered Debt Security.

Any market discount will be considered to accrue ratably during the period from the date of acquisition to the maturity date of the Registered Debt Security, unless you elect to accrue on a constant interest method. Your election to accrue market discount on a constant interest method is to be made for the taxable year in which you acquired the Registered Debt Security, applies only to that Registered Debt Security and cannot be revoked. You

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may elect to include market discount in income currently as it accrues, on either a ratable or constant interest method, in which case the rule described above regarding deferral of interest deductions will not apply. Your election to include market discount in income currently, once made, applies to all market discount obligations acquired by you on or after the first taxable year to which your election applies and may not be revoked without the consent of the Internal Revenue Service (the “IRS”). You should consult your own tax advisor before making this election.

Bond Premium

If you purchased a ZTF Debenture for an amount that is greater than its adjusted issue price but equal to or less than the sum of all amounts payable on the ZTF Debenture after the purchase date, you will be considered to have purchased that ZTF Debenture at an “acquisition premium.” Under the acquisition premium rules, the amount of OID that you must include in gross income with respect to a ZTF Debenture for any taxable year will be reduced by the portion of the acquisition premium properly allocable to that year.

If you purchased a Registered Debt Security for an amount in excess of the sum of all amounts payable on the Registered Debt Security after the purchase date other than qualified stated interest, you will be considered to have purchased the Registered Debt Security at a “premium” and, if such Registered Debt Security is a ZTF Debenture, you will not be required to include any OID in income. You generally may elect to amortize the premium over the remaining term of the Registered Debt Security on a constant yield method as an offset to interest when includible in income under your regular accounting method. In the case of instruments that provide for alternative payment schedules, bond premium is calculated by assuming that (a) you will exercise or not exercise options in a manner that maximizes your yield, and (b) we will exercise or not exercise options in a manner that minimizes your yield (except that we will be assumed to exercise call options in a manner that maximizes your yield). If you do not elect to amortize bond premium, that premium will decrease the gain or increase the loss you would otherwise recognize on disposition of a Registered Debt Security. Your election to amortize premium on a constant yield method will also apply to all debt obligations held or subsequently acquired by you on or after the first day of the first taxable year to which the election applies. You may not revoke the election without the consent of the IRS. You should consult your own tax advisor before making this election.

Sale, Exchange and Retirement of Registered Debt Securities

When you sell, exchange or retire a Registered Debt Security, you will recognize gain or loss equal to the difference between the amount you receive (not including an amount equal to any accrued qualified stated interest, which will be taxable as ordinary income to the extent not previously included in income) and your adjusted tax basis in the Registered Debt Security. Your tax basis in a Registered Debt Security other than a ZTF Debenture will generally be your cost of obtaining the Registered Debt Security increased by any market discount included in income and reduced by payments of principal you receive and any bond premium that you elect to amortize. Your adjusted tax basis in a ZTF Debenture will, in general, be your cost therefor, increased by any market discount and OID previously included in income and reduced by any cash payments on the ZTF Debentures and any bond premium that you elect to amortize. Your gain or loss realized on selling, exchanging or retiring a Registered Debt Security will generally be treated as United States source income. Consequently, you may not be able to use the foreign tax credit arising from any Korean tax imposed on the disposition of Registered Debt Securities unless such credit can be applied (subject to applicable limitations) against tax due on other income treated as derived from foreign sources. Except as described above with respect to market discount, your gain or loss will be capital gain or loss and will generally be long-term capital gain or loss if, at the time of the sale, exchange or retirement of a Registered Debt Security, you have held the Registered Debt Security for more than one year. If you are an individual and the Registered Debt Security being sold, exchanged or retired is a capital asset that you held for more than one year, you may be eligible for reduced rates of taxation on any capital gain recognized. Your ability to deduct capital losses is subject to limitations.

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ZTF Debentures Treated as Equity

If the ZTF Debentures were treated as equity for U.S. Federal income tax purposes, amounts actually or deemed paid with respect to the ZTF Debentures would be deemed dividends for U.S. Federal income tax purposes to the extent paid out of our current or accumulated earnings and profits (as determined for U.S. Federal income tax purposes).

You would include the amounts actually or deemed paid by us on the ZTF Debentures (before reduction for Korean withholding tax, if any) as dividend income when actually or constructively paid by us. Section 305 of the Code, which would apply to the ZTF Debentures if they were treated as equity for U.S. Federal income tax purposes, requires current accrual of dividends under principles similar to the accrual of OID. Amounts treated as dividends will not be eligible for the dividends received deduction generally allowed to U.S. corporations.

Tax Consequences with Respect to Common Stock and ADSs

In general, for U.S. Federal income tax purposes, holders of ADSs will be treated as the owners of the underlying common stock that is represented by such ADSs. Accordingly, deposits or withdrawals of common stock by holders of ADSs will not be subject to U.S. Federal income tax.

Distributions on Common Stock or ADSs

The gross amount of distributions (other than certain distributions of common stock or rights to subscribe for common stock) to holders of common stock or ADSs (including amounts withheld in respect of Korean withholding taxes) will be taxable dividends to such holders, to the extent paid out of our current or accumulated earnings and profits, as determined under U.S. Federal income tax principles. Such income (including withheld taxes) will be includable in the gross income of a holder as ordinary income on the day actually or constructively received by the holder, in the case of common stock, or by the Depositary, in the case of ADSs. Such dividends will not be eligible for the dividends received deduction allowed to corporations under the Code.

With respect tonon-corporate U.S. Persons, certain dividends paid by a qualified foreign corporation and received by such holders may be subject to reduced rates of taxation. A qualified foreign corporation includes a foreign corporation that is eligible for the benefits of an income tax treaty with the United States, if such treaty contains an exchange of information provision and the United States Treasury Department had determined that the treaty is satisfactory for purposes of the legislation. The United States Treasury Department has determined that the Treaty, which contains an exchange of information provision, is (in the absence of additional guidance) satisfactory for these purposes. In addition, we believe we are eligible for the benefits of the Treaty. However, a foreign corporation is also treated as a qualified foreign corporation with respect to dividends paid by that corporation on shares (or ADSs backed by such shares) that are readily tradable on an established securities market in the United States. Shares of our common stock will generally not be considered readily tradable for these purposes. However, United States Treasury Department guidance indicates that our ADSs, which are listed on the New York Stock Exchange, are readily tradable on an established securities market in the United States. There can be no assurance that our ADSs will be considered readily tradable on an established securities market in later years.Non-corporate U.S. Persons that do not meet a minimum holding period requirement during which they are not protected from a risk of loss or that elect to treat the dividend income as “investment income” pursuant to Section 163(d)(4) of the Code will not be eligible for the reduced rates of taxation regardless of our status as a qualified foreign corporation. In addition, the rate reduction will not apply to dividends if the recipient of a dividend is obligated to make related payments with respect to positions in substantially similar or related property. This disallowance applies even if the minimum holding period has been met. Holders should consult their own tax advisors regarding the application of the foregoing rules to their particular circumstances.

The amount of any dividend paid in Won will equal the United States dollar value of the Won received calculated by reference to the exchange rate in effect on the date the dividend is received by the holder, in the

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case of common stock, or by the Depositary, in the case of ADSs, regardless of whether the Won are converted into U.S. dollars. If the Won received as a dividend are not converted into U.S. dollars on the date of receipt, a holder will have a basis in the Won equal to their U.S. dollar value on the date of receipt. Any gain or loss realized on a subsequent conversion or other disposition of the Won will be treated as United States source ordinary income or loss. The amount of any distribution of property other than cash will be the fair market value of such property on the date of distribution.

The maximum rate of withholding tax on dividends paid to you pursuant to the Treaty is 16.5%. You will be required to properly demonstrate to us and the Korean tax authorities your entitlement to the reduced rate of withholding under the Treaty. Subject to certain conditions and limitations, Korean withholding taxes (up to the Treaty rate) will be treated as foreign taxes eligible for credit against your U.S. Federal income tax liability. For purposes of calculating the foreign tax credit, dividends paid on the common stock or ADSs will be treated as foreign source income and will generally constitute passive category income. Further, in certain circumstances, if you have held common stock or ADSs for less than a specified minimum period during which you are not protected from risk of loss, or are obligated to make payments related to the dividends, you will not be allowed a foreign tax credit for foreign taxes imposed on dividends paid on common stock or ADSs. The rules governing the foreign tax credit are complex. Investors are urged to consult their tax advisors regarding the availability of the foreign tax credit under their particular circumstances including the possible adverse impact on creditability to the extent you are entitled to a refund of any Korean tax withheld or a reduced rate of withholding.

To the extent that the amount of any distribution exceeds our current and accumulated earnings and profits for a taxable year, as determined under U.S. Federal income tax principles, the distribution will first be treated as atax- free return of capital, causing a reduction in the adjusted basis of the common stock or ADSs (thereby increasing the amount of gain, or decreasing the amount of loss, to be recognized by the investor on a subsequent disposition of the common stock or ADSs), and the balance in excess of adjusted basis will be taxed as capital gain recognized on a sale or exchange of property. Consequently, such distributions in excess of our current and accumulated earnings and profits would not give rise to foreign source income and you generally would not be able to use the foreign tax credit arising from any Korean withholding tax imposed on such distributions unless such credit can be applied (subject to applicable limitations) against U.S. tax due on other foreign source income in the appropriate category for foreign tax credit purposes. However, we do not expect to keep earnings and profits in accordance with U.S. Federal income tax principles. Therefore, you should expect that a distribution will generally be treated as a dividend (as discussed above).

Distributions of common stock or rights to subscribe for common stock that are received as part of a pro rata distribution to all of our shareholders generally will not be subject to U.S. Federal income tax. Consequently such distributions will not give rise to foreign source income and you generally will not be able to use the foreign tax credit arising from any Korean withholding tax unless such credit can be applied (subject to applicable limitations) against U.S. tax due on other income derived from foreign sources. The basis of the new common stock or rights so received will be determined by allocating your basis in the old common stock between the old common stock and the new common stock or rights received, based on their relative fair market value on the date of distribution. However, the basis of the rights will be zero if (i) the fair market value of the rights is less than 15% of the fair market value of the old common stock at the time of distribution, unless the taxpayer timely elects to determine the basis of the old common stock and of the rights by allocating between the old common stock and the rights the adjusted basis of the old common stock or (ii) the rights are not exercised and thus expire.

Sale, Exchange or Other Disposition of ADSs or Common Stock

Upon the sale, exchange or other disposition of ADSs or common stock, you generally will recognize capital gain or loss equal to the difference between the amount realized upon the sale, exchange or other disposition and your adjusted tax basis in the ADSs or common stock. The capital gain or loss will be long-term capital gain or loss if at the time of sale, exchange or other disposition, the ADSs or common stock have been held by you for more than one year. Under current law, long-term capital gains of individuals are, under certain

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circumstances, taxed at lower rates than items of ordinary income. The deductibility of capital losses is subject to limitations. Any gain or loss recognized by you will generally be treated as U.S. source gain or loss. Consequently, you may not be able to use the foreign tax credit arising from any Korean tax imposed on the disposition of ADSs or common stock unless such credit can be applied (subject to applicable limitations) against tax due on other income treated as derived from foreign sources.

You should note that any Korean securities transaction tax will not be treated as a creditable foreign tax for U.S. Federal income tax purposes, although you may be entitled to deduct such taxes, subject to applicable limitations under the Code.

Passive Foreign Investment Company Rules

Based upon the past and projected composition of our income and valuation of our assets, we do not believe that we were a PFIC for 2016, and we do not expect to be a PFIC in 2017 or to become one in the foreseeable future, although there can be no assurance in this regard. If, however, we become a PFIC, such characterization could result in adverse U.S. tax consequences to you if you are a U.S. investor. For example, if we become a PFIC, our U.S. investors will become subject to increased tax liabilities under U.S. tax laws and regulations and will become subject to burdensome reporting requirements. Our PFIC status is determined on an annual basis and depends on the composition of our income and assets. Specifically, we will be classified as a PFIC for U.S. tax purposes if either: (i) 75% or more of our gross income in a taxable year is passive income, or (ii) the average percentage of our assets by value in a taxable year which produce or are held for the production of passive income (which generally includes cash) is at least 50%. We cannot assure you that we will not be a PFIC for 2017 or any future taxable year.

Estate and Gift Taxation

As discussed above in “—Korean Taxes—Registered Debt Securities—Inheritance Tax and Gift Tax” and “—Korean Taxes—Shares or ADSs—Inheritance Tax and Gift Tax,” Korea may impose an inheritance tax on your heir who receives ADSs and will impose an inheritance tax on an heir who receives common stock or Registered Debt Securities. The amount of any inheritance tax paid to Korea may be eligible for credit against the amount of U.S. Federal estate tax imposed on your estate. Prospective purchasers should consult their personal tax advisors to determine whether and to what extent they may be entitled to such credit. Korea also imposes a gift tax on the donation of any property located within Korea. The Korean gift tax generally will not be treated as a creditable foreign tax for United States tax purposes.

Information Reporting and Backup Withholding

In general, information reporting requirements will apply to principal, interest, OID and premium payments on Registered Debt Securities and dividend payments in respect of the common stock or ADSs or the proceeds received on the sale, exchange or redemption of the Registered Debt Securities, common stock or ADSs paid within the United States (and in certain cases, outside of the United States) to holders other than certain exempt recipients, and a backup withholding tax may apply to such amounts if you fail to provide an accurate taxpayer identification number or to report interest and dividends required to be shown on your U.S. Federal income tax returns. The amount of any backup withholding from a payment to you will be allowed as a refund or a credit against your U.S. Federal income tax liability, provided the required information is timely furnished to the IRS.

Item 10.F. Dividends and Paying Agents

Not Applicable

Item 10.G. Statements by Experts

Not Applicable

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Item 10.H. Documents on Display

We are subject to the information requirements of the Exchange Act, and, in accordance therewith, are required to file reports, including annual reports on Form20-F, and other information with the U.S. Securities and Exchange Commission. You may inspect and copy these materials, including this annual report and the exhibits thereto, at SEC’s Public Reference Room 100 Fifth Street, N.E., Washington, D.C. 20549. Please call the Commission at1-800-SEC-0330 for further information on the public reference rooms. As a foreign private issuer, we are also required to make filings with the Commission by electronic means. Any filings we make electronically will be available to the public over the Internet at the Commission’s web site at http://www.sec.gov.

Item 10.I. Subsidiary Information

Not Applicable

ITEM 11. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

Our primary market risk exposures are to fluctuations in exchange rates, interest rates and fuel prices. We are exposed to foreign exchange risk related to foreign currency-denominated liabilities. As of December 31, 2016, approximately 23.1% of our long-term debt (including the current portion but excluding issue discounts and premium), before accounting for swap transactions, was denominated in foreign currencies, principally U.S. dollars. However, a substantial portion of our revenues is denominated in Won. As a result, changes in exchange rates, particularly between the Won and the U.S. dollar, significantly affect us due to our significant amounts of foreign currency-denominated debt and the effect of such changes on the amount of funds required by us to make interest and principal payments on such debt. In order to reduce the impact of foreign exchange rate fluctuations on our results of operations, we have recently been reducing and plan to continue to reduce the proportion of our debt which is denominated in foreign currencies.

We are also exposed to foreign exchange risk related to our purchases of fuel since we obtain substantially all of our fuel materials (other than anthracite coal) directly or indirectly from sources outside Korea. Prices for such fuel materials are quoted based on prices stated in, and in many cases are paid for in, currencies other than Won. In 2016, fuel costs represented 23.4% of our sales.

We are exposed to interest rate risk due to significant amounts of debt. Upward fluctuations in interest rates increase the cost of additional debt and the interest cost of outstanding floating rate borrowings. We are also exposed to fluctuations in prices of fuel materials. In 2016, for electricity generation, uranium accounted for 37.1% of our fuel requirements, coal accounted for 47.7%, LNG accounted for 10.8%, oil accounted for 3.0%, and others accounted for 1.3%, measured in each case by the amount of electricity we generated. In 2015, for electricity generation, uranium accounted for 38.1% of our fuel requirements, coal accounted for 47.9%, LNG accounted for 10.7%, oil accounted for 2.3% and others accounted for 1.0%, measured in each case by the amount of electricity we generated.

For additional discussions of our market risks, see Item 3.D. “Risk Factors” and Item 5.B. “Liquidity and Capital Resources—Liquidity.”

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We have entered into various swap contracts to hedge exchange rate risks arising from foreign currency-denominated debts. Details of currency swap contracts outstanding as of December 31, 2016 are as follows:

	Counterparty	Contract Year		Settlement Year		Contract amounts				Contract interest rate		Contract Exchange Rate
Type						Pay		Receive		Pay	Receive
						(KRW in millions, USD in thousands)
Trading	Deutsche Bank		2013		2018		KRW 110,412		JPY 10,000,000	6.21%	4.19%		11.04
	IBK		2013		2018		KRW 111,800		USD 100,000	3.16%	2.79%		1,118.00
	Bank of America		2013		2018		KRW 103,580		JPY 10,000,000	7.05%	4.19%		10.36
	Credit Suisse		2014		2019		KRW 118,632		CHF 100,000	2.98%	1.50%		1,186.32
	Standard Chartered		2014		2019		KRW 114,903		CHF 100,000	4.00%	1.50%		1,149.03
	Standard Chartered		2014		2029		KRW 102,470		USD 100,000	3.14%	3.57%		1,024.70
	Standard Chartered		2014		2017		KRW 51,215		USD 50,000	2.24%	3M Libor + 0.55%		1,024.30
	Mizuho Bank		2014		2017		KRW 153,645		USD 150,000	2.35%	3M Libor + 0.65%		1,024.30
	Societe Generale		2014		2024		KRW 105,017		USD 100,000	4.92%	5.13%		1,050.17
	KEB Hana Bank		2015		2024		KRW 107,970		USD 100,000	4.75%	5.13%		1,079.70
	Credit Agricole		2015		2024		KRW 94,219		USD 86,920	4.85%	5.13%		1,083.97
	Citibank		2012		2022		KRW 112,930		USD 100,000	2.79%	3.00%		1,129.30
	JP Morgan		2012		2022		KRW 112,930		USD 100,000	2.79%	3.00%		1,129.30
	Bank of America		2012		2022		KRW 112,930		USD 100,000	2.79%	3.00%		1,129.30
	Shinhan Bank		2016		2022		KRW 112,930		USD 100,000	2.79%	3.00%		1,129.30
	HSBC		2012		2022		KRW 111,770		USD 100,000	2.89%	3.00%		1,117.70
	KEB Hana Bank		2012		2022		KRW 111,770		USD 100,000	2.87%	3.00%		1,117.70
	Standard Chartered		2012		2022		KRW 111,770		USD 100,000	2.89%	3.00%		1,117.70
	Deutsche Bank		2012		2022		KRW 55,885		USD 50,000	2.79%	3.00%		1,117.70
	DBS		2013		2018		KRW 108,140		USD 100,000	2.63%	3M Libor + 0.84%		1,081.40
	DBS		2013		2018		KRW 108,140		USD 100,000	2.57%	3M Libor + 0.84%		1,081.40
	DBS		2013		2018		KRW 108,140		USD 100,000	2.57%	3M Libor + 0.84%		1,081.40
	HSBC		2013		2018		KRW 107,450		USD 100,000	3.41%	2.88%		1,074.50
	Standard Chartered		2013		2018		KRW 107,450		USD 100,000	3.44%	2.88%		1,074.50
	JP Morgan		2013		2018		KRW 107,450		USD 100,000	3.48%	2.88%		1,074.50
	Bank of America		2014		2018		KRW 107,450		USD 100,000	3.09%	2.88%		1,074.50
	Citibank		2014		2018		KRW 107,450		USD 100,000	3.09%	2.88%		1,074.50
	JP Morgan		2014		2017		KRW 102,670		USD 100,000	2.89%	3M Libor + 0.78%		1,026.70
	Deutsche Bank		2014		2017		KRW 102,670		USD 100,000	2.89%	3M Libor + 0.78%		1,026.70
	HSBC		2014		2019		KRW 105,260		USD 100,000	2.48%	2.38%		1,052.60
	Standard Chartered		2014		2019		KRW 105,260		USD 100,000	2.48%	2.38%		1,052.60
	Korea Development Bank		2016		2019		KRW 105,260		USD 100,000	2.48%	2.38%		1,052.60
	Nomura		2015		2025		KRW 111,190		USD 100,000	2.60%	3.25%		1,111.90
	Korea Development Bank		2015		2025		KRW 111,190		USD 100,000	2.62%	3.25%		1,111.90
	Woori Bank		2015		2025		KRW 55,595		USD 50,000	2.62%	3.25%		1,111.90
	KEB Hana Bank		2015		2025		KRW 55,595		USD 50,000	2.62%	3.25%		1,111.90
Cash flow hedge	Standard Chartered		2011		2017		KRW 105,260		USD 100,000	3.99%	3.63%		1,052.60
	Barclays Bank PLC		2011		2017		KRW 105,260		USD 100,000	3.99%	3.63%		1,052.60
	Citibank		2011		2017		KRW 105,260		USD 100,000	3.99%	3.63%		1,052.60
	Citibank		2013		2018		KRW 54,570		USD 50,000	2.90%	3M Libor + 1.01%		1,091.40

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	Counterparty	Contract Year		Settlement Year		Contract amounts				Contract interest rate		Contract Exchange Rate
Type						Pay		Receive		Pay	Receive
						(KRW in millions, USD in thousands)
	Standard Chartered		2013		2018		KRW 54,570		USD 50,000	2.90%	3M Libor + 1.01%		1,091.40
	Credit Suisse		2013		2018		KRW 111,410		USD 100,000	3.22%	3M Libor + 1.50%		1,114.10
	HSBC		2014		2020		KRW 99,901		AUD 100,000	3.52%	5.75%		999.01
	HSBC		2014		2020		KRW 100,482		AUD 100,000	3.48%	5.75%		1,004.82
	Standard Chartered		2013		2020		USD 117,250		AUD 125,000	3M Libor + 1.25%	5.75%		0.94
	Standard Chartered		2014		2020		KRW 126,032		USD 117,250	3.55%	3M Libor + 1.25%		1,074.90
	JP Morgan		2014		2019		KRW 107,190		USD 100,000	3M Libor+3.25%	2.75%		1,071.90
	Morgan Stanley		2014		2019		KRW 107,190		USD 100,000	3M Libor+3.25%	2.75%		1,071.90
	Deutsche Bank		2014		2019		KRW 107,190		USD 100,000	3M Libor+3.25%	2.75%		1,071.90
	Korea Development Bank		2016		2021		KRW 121,000		USD 100,000	2.15%	2.50%		1,210.00
	Morgan Stanley		2016		2021		KRW 121,000		USD 100,000	3M Libor+2.10%	2.50%		1,210.00
	BNP Paribas		2016		2021		KRW 121,000		USD 100,000	3M Libor+2.10%	2.50%		1,210.00
	Morgan Stanley		2012		2017		KRW 285,000		USD 250,000	3.76%	3.13%		1,140.00
	Credit Agricole		2012		2017		KRW 142,500		USD 125,000	3.83%	3.13%		1,140.00
	JP Morgan		2012		2017		KRW 142,500		USD 125,000	3.83%	3.13%		1,140.00
	Credit Agricole		2013		2019		KRW 118,343		CHF 100,000	3.47%	1.63%		1,183.43
	Morgan Stanley		2013		2019		KRW 59,172		CHF 50,000	3.40%	1.63%		1,183.43
	Nomura		2013		2019		KRW 59,172		CHF 50,000	3.47%	1.63%		1,183.43
	Morgan Stanley		2013		2018		KRW 107,360		USD 100,000	3.27%	2.88%		1,073.60
	Credit Agricole		2013		2018		KRW 107,360		USD 100,000	3.34%	2.88%		1,073.60
	JP Morgan		2013		2018		KRW 161,040		USD 150,000	3.34%	2.88%		1,073.60
	Standard Chartered		2013		2018		KRW 161,040		USD 150,000	3.34%	2.88%		1,073.60
	Standard Chartered		2014		2019		KRW 104,490		USD 100,000	2.77%	2.63%		1,044.90
	Credit Agricole		2014		2019		KRW 104,490		USD 100,000	2.77%	2.63%		1,044.90
	Morgan Stanley		2014		2019		KRW 104,490		USD 100,000	2.70%	2.63%		1,044.90
	Barclays Bank PLC		2013		2018		KRW 81,188		USD 75,000	2.65%	1.88%		1,082.50
	Credit Agricole		2013		2018		KRW 81,188		USD 75,000	2.65%	1.88%		1,082.50
	Deutsche Bank		2013		2018		KRW 81,188		USD 75,000	2.65%	1.88%		1,082.50
	Citibank		2013		2018		KRW 81,188		USD 75,000	2.65%	1.88%		1,082.50
	Standard Chartered		2014		2017		KRW 54,205		USD 50,000	2.93%	3M Libor + 1.05%		1,084.10
	Credit Agricole		2014		2017		KRW 54,205		USD 50,000	2.93%	3M Libor + 1.05%		1,084.10
	HSBC		2012		2017		KRW 115,140		USD 100,000	3.38%	2.50%		1,151.40
	BNP Paribas		2012		2017		KRW 115,140		USD 100,000	3.38%	2.50%		1,151.40
	KEB Hana Bank		2012		2017		KRW 115,140		USD 100,000	3.38%	2.50%		1,151.40
	Barclays Bank PLC		2012		2017		KRW 57,570		USD 50,000	3.38%	2.50%		1,151.40
	Standard Chartered		2012		2017		KRW 57,570		USD 50,000	3.38%	2.50%		1,151.40
	Nomura		2012		2017		KRW 57,570		USD 50,000	3.38%	2.50%		1,151.40
	Credit Agricole		2012		2017		KRW 57,570		USD 50,000	3.38%	2.50%		1,151.40
	Societe Generale		2013		2018		KRW 106,190		USD 100,000	3.48%	2.63%		1,061.90
	BNP Paribas		2013		2018		KRW 53,095		USD 50,000	3.48%	2.63%		1,061.90
	KEB Hana Bank		2013		2018		KRW 53,095		USD 50,000	3.48%	2.63%		1,061.90
	Standard Chartered		2013		2018		KRW 106,030		USD 100,000	3.48%	2.63%		1,060.30

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	Counterparty	Contract Year		Settlement Year		Contract amounts				Contract interest rate		Contract Exchange Rate
Type						Pay		Receive		Pay	Receive
						(KRW in millions, USD in thousands)
	Barclays Bank PLC		2013		2018		KRW 53,015		USD 50,000	3.48%	2.63%		1,060.30
	KEB Hana Bank		2013		2018		KRW 31,809		USD 30,000	3.48%	2.63%		1,060.30
	Societe Generale		2013		2018		KRW 21,206		USD 20,000	3.48%	2.63%		1,060.30
	HSBC		2013		2018		KRW 53,015		USD 50,000	3.47%	2.63%		1,060.30
	Nomura		2013		2018		KRW 53,015		USD 50,000	3.47%	2.63%		1,060.30
	Credit Agricole		2014		2020		KRW 110,680		USD 100,000	2.29%	2.50%		1,106.80
	Societe Generale		2014		2020		KRW 55,340		USD 50,000	2.16%	2.50%		1,106.80
	KEB Hana Bank		2014		2020		KRW 55,340		USD 50,000	2.16%	2.50%		1,106.80
	KEB Hana Bank		2014		2020		KRW 55,340		USD 50,000	2.21%	2.50%		1,106.80
	Standard Chartered		2014		2020		KRW 55,340		USD 50,000	2.21%	2.50%		1,106.80
	HSBC		2014		2020		KRW 55,340		USD 50,000	2.21%	2.50%		1,106.80
	Nomura		2014		2020		KRW 55,340		USD 50,000	2.21%	2.50%		1,106.80
	Barclays Bank PLC		2014		2020		KRW 55,340		USD 50,000	2.21%	2.50%		1,106.80
	HSBC		2014		2020		KRW 55,340		USD 50,000	2.21%	2.50%		1,106.80

Under these currency swap contracts, we recognized net valuation gain of Won 253,035 million in 2016.

Details of interest rate contracts outstanding as of December 31, 2016 are as follows:

Type	Counterparty	Contract Year		Settlement Year				Contract Interest Rate Per Annum
						Notional Amount		Pay	Receive
						(KRW in millions, USD in thousands)
Trading	Standard Chartered		2012		2017		KRW 160,000	3.57%	3M CD + 0.32%
	JP Morgan		2013		2018		KRW 150,000	3.58%	3M CD + 0.31%
	Credit Suisse		2014		2018		KRW 200,000	2.98%	1Y CMT + 0.31%
	Korea Development Bank(1)		2014		2029		KRW 40,000	3M CD – 0.03%	4.65%
	Export-Import Bank of Korea		2015		2031		USD 15,893	2.67%	6M USD Libor
	ING Bank		2015		2031		USD 7,861	2.67%	6M USD Libor
	BNP Paribas		2015		2031		USD 7,861	2.67%	6M USD Libor
Cash flow hedge	BNP Paribas		2009		2027		USD 94,790	4.16%	6M USD Libor
	KFW		2009		2027		USD 94,790	4.16%	6M USD Libor
	Credit Agricole		2016		2033		USD 99,694	3.98% ~ 4.10%	6M USD Libor
	SMBC		2016		2033		USD 130,369	4.05% ~ 4.18%	6M USD Libor

Note:

(1) This contract is an interest rate swap hedging on Electricity Bonds 885, and the bank would notify us of the early termination every year on the early termination nonfiction date (every year on April 28 from 2017 until 2028). The contract will be terminated if the early termination is notified.

Under these interest rate swap contracts, we recognized net valuation gain of Won 8,517 million in 2016.

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We engage in transactions denominated in foreign currencies and consequently become exposed to fluctuations in exchange rates. The carrying amounts of our foreign currency-denominated monetary assets and monetary liabilities as of December 31, 2015 and 2016 were as follows:

	Assets				Liabilities
Type	2015		2016		2015		2016
	(In thousands of USD, EUR, GBP and other foreign currencies)
AED		1,481		7,479		1,705		1,534
AUD		158		187		595,284		632,613
BDT		43,332		49,110		889		833
BWP		301		4,296		—		3,222
CAD		—		—		858		—
CHF		—		—		400,029		400,308
CNY		—		—		26,140		—
EUR		6,141		17,585		33,552		14,111
GBP		—		3		99		110
IDR		—		52,568		—		—
INR		972,175		1,059,092		206,159		161,631
JOD		2,972		1,746		—		5
JPY		1,425,163		520,746		20,325,211		20,442,504
KZT		47,177		12,157		—		—
MGA		2,768,360		3,408,579		151,729		150,430
MXN		7,704		—		—		—
PHP		489,309		415,818		77,337		136,700
PKR		211,212		274,090		12,928		5,051
SAR		1,083		1,149		—		—
TWD		—		—		30		—
USD		1,260,094		1,319,524		9,331,854		9,445,567
UYU		—		1,307		—		586
ZAR		238		386		—		75

The following analysis sets forth the sensitivity of our consolidated net income before income taxes (our“pre-tax income”) to changes in exchange rates, interest rates, electricity rates and fuel costs. For purposes of this section, we and our related parties are deemed one entity. The range of changes in such risk categories represents our view of the changes that are reasonably possible over aone-year period, although it is difficult to predict such changes as a result of adverse economic developments in Korea. See Item 3.D. “Risk Factors—Risks Relating to Korea and the Global Economy—Unfavorable financial and economic conditions in Korea and globally may have a material adverse impact on us.” The following discussion only addresses material market risks faced by us and does not discuss other risks which we face in the normal course of business, including country risk, credit risk and legal risk. Unless otherwise specified, all calculations are made under IFRS.

If Won depreciates against U.S. dollar and all other foreign currencies held by us by 10% and all other variables are held constant from their levels as of December 31, 2016, we estimate that our unrealized foreign exchange translation losses will increase by Won 1,101 billion in 2017. Such sensitivity analysis is conducted for monetary assets and liabilities denominated in foreign currencies other than functional currency as of December 31, 2016 and 2015, before accounting for swap transactions. To manage our foreign currency risk related to foreign currency-denominated receivables and payables, we have a policy of entering into currency forward agreements. In addition, to manage our foreign currency risk related to foreign currency-denominated expected sales transactions and purchase transactions, we enter into cross-currency swap agreements.

We are exposed to interest rate risk due to our borrowings with floating interest rates. If interest rates increase by 1% on all of our borrowings and debentures bearing variable interest and all other variables are held

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constant as of December 31, 2016, we estimate that our income before income taxes will decrease by Won 33 billion (not reflecting the fact that a portion of such interest may be capitalized under IFRS) in 2017. Such sensitivity analysis does not take into consideration interest rate swap transactions. To manage our interest rate risks, we, in addition to maintaining an appropriate mix of fixed and floating rate loans, have entered into certain interest rate swap agreements.

We are exposed to electricity rates risk due to the rate regulation by the Government, which considers the effect of electricity rate changes on the national economy. If the electricity rate rises by 1% and all other variables are held constant as of December 31, 2016, we estimate that our income before income taxes will increase by Won 543 billion in 2017.

We are exposed to fuel price risks due to the heavy influence of fuel costs on our sales and cost of sales. If the fuel prices of anthracite and bituminous coal, oil, LNG and others used for generation by us and our generation subsidiaries rise by 1% and all other variables are held constant as of December 31, 2016, we estimate that our income before income taxes will decrease by Won 141 billion in 2017.

The above discussion and the estimated amounts generated from the sensitivity analyzes referred to above include “forward-looking statements,” which assume for analytical purposes that certain market conditions may occur. Accordingly, such forward-looking statements should not be considered projections by us of future events or losses.

See Note 45 of the notes to our consolidated financial statements included in this annual report for further related information.

ITEM 12. DESCRIPTION OF SECURITIES OTHER THAN EQUITY SECURITIES

Item 12.A. Debt Securities

Of the four debt securities issued by us that are registered under the Exchange Act as set forth in the cover page of this annual report, the One Hundred Year 7.95%Zero-to-Full Debentures due April 1, 2096, were guaranteed by Korea Development Bank. However, such guarantee expired on April 1, 2016 by reason of the expiration of a put option period applicable to such debentures in accordance with the terms of such debentures.

Korea Development Bank, a statutory bank for the Korean government, is 100% beneficially owned by the Korean government. The voting rights in our equity interest held by Korea Development Bank are effectively exercised by the Korean government.

The guarantee by Korea Development Bank of our above-mentioned registered debt securities was itself a security registered under the Securities Act. Korea Development Bank is a Schedule B issuer and periodically files registration statements with the Commission. These registration statements typically include financial statements prepared in accordance with the applicable generally accepted accounting principles, currently the Korean International Financial Reporting Standards, and audited in accordance with generally accepted auditing standards in the Republic of Korea.

Item 12.B. Warrants and Rights

Not applicable.

Item 12.C. Other Securities

Not applicable.

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Item 12.D. American Depositary Shares

Under the terms of the Deposit Agreement in respect of our ADSs, the holder and beneficiary owners of ADSs, any party depositing or withdrawing or surrendering ADSs or ADRs, whichever applicable, may be required to pay the following fees and charges to Citibank, N.A. acting as depositary for our ADSs:

Item	Services	Fees
1	Taxes and other governmental charges	As applicable
2	Registration of transfer of common shares generally on our shareholders’ register, any institution authorized under the applicable law to effect book-entry transfers of securities (including Korea Securities Depositary), or any entity that presently carries out the duties of registrar for the common shares, and applicable to transfers of common shares to the name of the Depositary or its nominee on the making of deposits or withdrawals	A fee of US$1.50 or less per ADS
3	Cable, telex and facsimile transmission expenses	As applicable
4	Expenses incurred by the Depositary in the conversion of foreign currency	As applicable
5	Execution and delivery of ADRs and the surrender of ADRs	Fee of US$0.05 or less per ADS
6	Cash distribution made by the Depositary or its agent	Fee of US$0.02 or less per ADS
7	Fee for the distribution of proceeds of sales of securities or rights for distribution other than cash, common shares or rights to subscribe for shares, distribution in shares or distribution in rights to subscribe for shares	Lesser of (i) the fee for the execution and delivery of ADRs referred to above which would have been charged as a result of the deposit by the holders of securities or common shares received in exercise of rights distributed to them, but which securities or rights are instead sold by the Depositary and the net proceeds distributed and (ii) the amount of such proceeds
8	Depositary services performed in administering the ADRs (which fee shall be assessed against holders of ADSs as of the record date or dates and shall be payable at the sole discretion of the Depositary by billing such holders or by deducting such charge from one or more cash dividends or other cash distributions)	Fee of US$0.02 or less per ADS per calendar year

Depositary fees payable upon the issuance and cancelation of ADSs are typically paid to the depositary by the brokers (on behalf of their clients) receiving the newly-issued ADSs from the depositary and by the brokers (on behalf of their clients) delivering the ADSs to the depositary for cancelation. The brokers in turn charge these transaction fees to their clients.

Depositary fees payable in connection with distributions of cash or securities to ADS holders and the depositary services fee are charged by the depositary to the holders of record of ADSs as of the applicable ADS record date. The depositary fees payable for cash distributions are generally deducted from the cash being

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distributed. In the case of distributions other than cash (i.e., stock dividends, rights offerings), the depositary charges the applicable fee to the ADS record date holders concurrent with the distribution. In the case of ADSs registered in the name of the investor (whether certificated orun-certificated in direct registration), the depositary sends invoices to the applicable record date ADS holders. In the case of ADSs held in brokerage and custodian accounts via the central clearing and settlement system, the Depository Trust Company (“DTC”), the depositary generally collects its fees through the systems provided by DTC (whose nominee is the registered holder of the ADSs held in DTC) from the brokers and custodians holding ADSs in their DTC accounts. The brokers and custodians who hold their clients’ ADSs in DTC accounts in turn charge their clients’ accounts the amount of the fees paid to the depositary.

In the event of refusal to pay the depositary fees, the depositary may, under the terms of the Deposit Agreement, refuse the requested service until payment is received or mayset-off the amount of the depositary fees from any distribution to be made to the ADS holder.

The fees and charges the ADS holders may be required to pay may vary over time and may be changed by us and by the depositary. The ADS holders will receive prior notice of such changes.

Depositary Payments for the Fiscal Year 2016

The following table sets forth our expenses incurred in 2016, which were reimbursed by Citibank, N.A. in the aggregate:

	(In thousands of U.S. dollars)
Reimbursement of legal fees	US$	387
Reimbursement of accounting fees		273
Contributions towards our investor relations and other financing efforts (including investor conferences,non-deal roadshows and market information services)		1,375
Other		151
Total	US$	2,186

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PART II

ITEM 13. DEFAULTS, DIVIDEND ARREARAGES AND DELINQUENCIES

Not applicable.

ITEM 14. MATERIAL MODIFICATIONS TO THE RIGHTS OF SECURITY HOLDERS AND USE OF PROCEEDS

Not applicable.

ITEM 15. CONTROLS AND PROCEDURES

Disclosure Control

Under the supervision and with the participation of our management, including our chief executive officer and chief financial officer, we have evaluated the effectiveness of the design and operation of our disclosure controls and procedures (as defined in Rule13a-15(e) under the Exchange Act) as of December 31, 2016. There are inherent limitations to the effectiveness of any system of disclosure controls and procedures, including the possibility of human error and the circumvention or overriding of the controls and procedures. Accordingly, even effective disclosure controls and procedures can provide only reasonable assurance of achieving their control objectives. Based upon our evaluation, our chief executive officer and chief financial officer concluded that the design and operation of our disclosure controls and procedures as of December 31, 2016 were effective to provide reasonable assurance that information required to be disclosed by us in the reports we file and submit under the Exchange Act is recorded, processed, summarized and reported, within the time periods specified in the applicable rules and forms, and that it is accumulated and communicated to our management, including our chief executive officer and chief financial officer, as appropriate to allow timely decision regarding required disclosure.

Management’s Annual Report on Internal Control Over Financial Reporting

Our management is responsible for establishing and maintaining adequate internal control over financial reporting, as such term is defined in Rules13a-15(f) and15d-15(f) under the Exchange Act, for our company. Under the supervision and with the participation of our management, including our chief executive officer and chief financial officer, we have evaluated the effectiveness of our internal control over financial reporting as of December 31, 2016 based on the framework established in Internal Control-Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (2013). Our internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of consolidated financial statements in accordance with generally accepted accounting principles and includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of a company’s assets, (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of consolidated financial statements in accordance with generally accepted accounting principles, and that a company’s receipts and expenditures are being made only in accordance with authorizations of a company’s management and directors, and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use or disposition of a company’s assets that could have a material effect on the consolidated financial statements.

Because of its inherent limitations, a system of internal control over financial reporting can provide only reasonable assurance with respect to consolidated financial statement preparation and presentation and may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

155

Following the overhaul in May 2013 by the Committee of Sponsoring Organization of the Treadway (“COSO”) of the COSO Framework relating to internal controls and adoption of the 2013 Integrated Framework of the Committee of Sponsoring Organizations of the Treadway Commission (the “COSO Framework (2013)”), we have, effective January 1, 2014, adopted the COSO Framework (2013) and incorporated it into our internal control system for us and our subsidiaries in order to comply with the Sarbanes Oxley Act and to standardize our internal control system. As required by Section 404 of the Sarbanes-Oxley Act of 2002 and related rules as promulgated by the Securities and Exchange Commission, management assessed the effectiveness of our internal control over financial reporting as of December 31, 2016 using criteria established by the COSO Framework (2013). Based on this evaluation, our management concluded that our internal control over financial reporting was effective as of December 31, 2016 based on the criteria established by the COSO Framework (2013).

Audit Report of the Independent Registered Public Accounting Firm

KPMG Samjong Accounting Corp. has issued an audit report on the effectiveness of our internal control over financial reporting, which is included elsewhere in this annual report.

Changes in Internal Controls

There were no changes in our internal control over financial reporting that occurred during the year ended December 31, 2016 that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting. Our adoption of the COSO Framework (2013) did not have, and is not reasonably likely to have, any material effect on our internal control over financial reporting.

We operate an integrated ERP system for a transparent and efficient management of the core ERP components, including personnel, accounting, procurement, construction and facilities maintenance. In addition, we also operate a strategic enterprise management system that includes business warehouse, management information and business planning and simulation systems. We continue to upgrade and improve the ERP system, which is being used as our core information infrastructure.

ITEM 16. [RESERVED]

ITEM 16.A. AUDIT COMMITTEE FINANCIAL EXPERT

Our board of directors has determined that we have at least one “audit committee financial expert” as such term is defined by the regulations of the Securities and Exchange Commission issued pursuant to Section 407 of the Sarbanes-Oxley Act of 2002. Our audit committee financial expert is Cho, Jeon-Hyeok. Such member currently remains a member of the audit committee and is independent within the meaning of the Korea Stock Exchange listing standards, the regulations promulgated under the Enforcement Decree of the Korean Commercial Code and the New York Stock Exchange listing standards. For biographic information of our audit committee financial expert, Cho, Jeon-Hyeok,see Item 6.A. “Directors and Senior Management.”

ITEM 16.B. CODE OF ETHICS

We have adopted a code of ethics for our principal executive officer, principal financial officer, principal accounting officer or controller, or persons performing similar functions as required under Section 406 of the Sarbanes-Oxley Act of 2002, together with an insider reporting system in compliance with Section 301 of the Sarbanes-Oxley Act. The code of ethics is available on our website www.kepco.co.kr. We have not granted any waiver, including an implicit waiver, from a provision of the code of ethics to any of the above-mentioned officers during our most recently completed fiscal year.

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ITEM 16.C. PRINCIPAL AUDITOR FEES AND SERVICES

The following table sets forth the aggregate fees billed for each of the years ended December 31, 2015 and 2016 for professional services rendered by our principal auditors for such year, for various types of services and a brief description of the nature of such services. KPMG Samjong Accounting Corp., a Korean independent registered public accounting firm, was our principal auditors for the year ended December 31, 2016 and we currently expect KPMG Samjong Accounting Corp. to serve as our principal auditors for the year ended December 31, 2017.

	Aggregate Fees Billed During
Type of Services	2015		2016		Nature of Services
	(In millions of Won)
Audit Fees	￦	3,004	￦	3,296	Audit service for KEPCO and its subsidiaries.
Audit-Related Fees		98		—	Accounting advisory service.
Tax Fees		12		—	Tax return and consulting advisory service.
All Other Fees		—		—	All other services which do not meet the three categories above.
Total	￦	3,114	￦	3,296

United States law and regulations in effect since May 6, 2003 generally require all service of the principal auditors to bepre-approved by an independent audit committee or, if no such committee exists with respect to an issuer, by the entire board of directors. We have adopted the following policies and procedures for consideration and approval of requests to engage our principal auditors to perform audit andnon-audit services. If the request relates to services that would impair the independence of our principal auditors, the request must be rejected. If the service request relates to audit and permittednon-audit services for us and our subsidiaries, it must be forwarded to our audit committee and receivepre-approval.

In addition, United States law and regulations permit thepre-approval requirement to be waived with respect to engagements fornon-audit services aggregating no more than five percent of the total amount of revenues we paid to our principal auditors, if such engagements were not recognized by us at the time of engagement and were promptly brought to the attention of our audit committee or a designated member thereof and approved prior to the completion of the audit.

ITEM 16.D. EXEMPTIONS FROM THE LISTING STANDARDS FOR AUDIT COMMITTEE

Not applicable.

ITEM 16.E. PURCHASES OF EQUITY SECURITIES BY THE ISSUER AND AFFILIATED PURCHASERS

Neither we nor any “affiliated purchaser,” as defined in Rule10b-18(a)(3) of the Exchange Act, purchased any of our equity securities during the period covered by this annual report.

ITEM 16.F. CHANGE IN REGISTRANT’S CERTIFYING ACCOUNTANT

Not applicable.

157

ITEM 16.G. CORPORATE GOVERNANCE

We are committed to high standards of corporate governance. We are in compliance with the corporate governance provisions of the KEPCO Act, the Act on the Management of Public Institutions, the Korean Commercial Code, the Financial Investment Services and Capital Markets Act of Korea and the Listing Rules of the Korea Exchange. We, like all other companies in Korea, must comply with the corporate governance provisions under the Korean Commercial Code, except to the extent the KEPCO Act and the Act on the Management of Public Institutions otherwise require. Our corporate governance is also affected by various regulatory guidelines, including those promulgated by the Ministry of Strategy and Finance. In addition, as a company listed on the Korea Exchange, we are subject to the Financial Investment Services and Capital Markets Act of Korea, unless the Financial Investment Services and Capital Markets Act of Korea otherwise provides.

The Act on the Management of Public Institutions

General Provisions

On April 1, 2007, the Act on the Management of Public Institutions took effect by abolishing and replacing the Government-invested Enterprise Management Basic Act, which was enacted in 1984. Unless stated otherwise therein, the Act on the Management of Public Institutions takes precedence over any other laws and regulations in the event of inconsistency. On April 2, 2007, pursuant to this Act the minister of the Ministry of Strategy and Finance designated us as a “market-oriented public enterprise” as defined under this Act, and we became subject to this Act accordingly. We incorporated the applicable provisions of this Act into our Articles of Incorporation by amendment thereto in September 2007.

The Act on the Management of Public Institutions sets out the rules for corporate governance for entities that are subject to this Act, including the appointment of their respective president and directors. Under this Act as it applies to us as a “market-oriented public enterprise”, (i) a seniornon-standing director as appointed by the minister of the Ministry of Strategy and Finance becomes the chairman of our board of directors following the review and resolution of the Public Agencies Operating Committee; (ii) our president and our standing directors who concurrently serve as members of our audit committee are appointed by the President of the Republic upon the motion of the Ministry of Trade, Industry and Energy (in the case of our president) or of the Ministry of Strategy and Finance (in the case of standing directors who concurrently serve as members of our audit committee), following the nomination by such enterprise’s director nomination committee, the review and resolution of the Public Agencies Operating Committee pursuant to the Act on the Management of Public Institutions and an approval at the general meeting of our shareholders; (iii) our standing directors other than the president and those who also serve as audit committee members must be appointed by our president with the approval at the general meeting of our shareholders from a pool of candidates recommended by our director nomination committee; and (iv) ournon-standing directors must be appointed by the minister of the Ministry of Strategy and Finance following the review and resolution of the Public Agencies Operating Committee from a pool of candidates recommended by the director nomination committee and an approval at the general meeting of our shareholders, and must have ample knowledge and experience in business management.

The Public Agencies Operating Committee is established pursuant to the Act on the Management of Public Institutions and is comprised of one chairperson who is the Minister of the Ministry of Strategy and Finance and the following members: (i) one Vice Minister-level public official from the Office for Government Policy Coordination as nominated by the minister of the Office for Government Policy Coordination; (ii) one Vice Minister, Deputy Administrator or an equivalent public official of the related administrative agency as prescribed by Presidential Decree; (iii) one Vice Minister, Deputy Administrator, or an equivalent public official of the competent agency who does not fall under subclause (ii); and (iv) 11 or fewer persons commissioned by the President based on the recommendation of the Minister of the Ministry of Strategy and Finance from among persons in various fields including law, economy, press, academia, labor, who have good knowledge and experience in the operation and business administration of public institutions as well as good reputation for impartiality.

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Our director nomination committee, which is also known as the Committee for Recommendation of Executive Officers, is comprised ofnon-standing directors and members appointed by the board of directors. The number of members ranges from five to 15 persons and must be decided by a resolution of the board of directors; provided that, the number of members appointed by the board of directors must be less than half of the total number of members of our director nomination committee.

Under the Act on the Management of Public Institutions and our Articles of Incorporation, the term of office is three years for our president and two years for our directors (standing andnon-standing) other than our president. Our directors (including the president) may be reappointed for one or more additional terms of one year. In order to be reappointed, the president must be evaluated on the basis of his management performance; a standing director, on the basis of the performance of the duties for which he was elected to perform, or if the standing director has executed an incentive bonus contract, on the basis of his performance under the contract; and anon-standing director, on the basis of his performance of the duties for which he was elected to perform.

Under the Act on the Management of Public Institutions and our Articles of Incorporation, a recommendation from the director nomination committee is required for the appointment of our executive officers, except in the case of reappointments. The director nomination committee consists of five to fifteen members, including private-sector members appointed by the board of directors.Non-standing directors must comprise at least a majority of the director nomination committee. One of the private-sector members must be able to represent our opinion and must not be currently employed by us. As required under the Act on the Management of Public Institutions, we established an audit committee. At leasttwo-thirds of the audit committee members must benon-standing directors, and at least one committee member must be an expert in finance or accounting. According to the Act on the Management of Public Institutions, our president’s term cannot be terminated unless done so by the President of the Republic pursuant to the Act on the Management of Public Institutions or upon an event as specified in our Articles of Incorporation.

As required under Act on the Management of Public Institutions, we submit to the Government by October 31 every year a report on our medium- to long-term management goals. Under the Act on the Management of Public Institutions, we are also required to give separate public notice of important management matters, such as our budget and financial statements, status of directors and annual reports. In addition, for purposes of providing a comparison of the management performances of government agencies, we are required to post on a designated website a notice on a standard form detailing our management performance. Following consultation with the minister of the Ministry of Trade, Industry and Energy and the review and resolution of the operating committee, the Ministry of Strategy and Finance must examine the adequacy and competency of government agencies and establish plans on merger, abolishment, restructuring and privatization of public agencies. In such case, the minister of the Ministry of Trade, Industry and Energy must execute these plans and submit a performance report to the Ministry of Strategy and Finance.

Application of the Act to Our Generation Subsidiaries

On January 24, 2011, the Ministry of Strategy and Finance changed the designation of our six generation subsidiaries from “other public institutions” to “market-oriented public enterprises”, each as defined in the Act on the Management of Public Institutions, and all of our generation subsidiaries accordingly amended their respective articles of incorporation in 2011 to be in compliance with this Act. As “other public institutions”, our generation subsidiaries previously were not subject to the same regulations under the Act on the Management of Public Institutions applicable to us with regards to corporate governance matters such as the appointment and dismissal of directors and the composition of the boards of directors. However, as “market-oriented public enterprises”, our generation subsidiaries are currently subject to the same such regulations that are applicable to us.

Specifically, prior to such designation, (i) our president appointed the presidents and the statutory auditors of our generation subsidiaries; (ii) the selection ofnon-standing directors of each such subsidiary was subject to

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approval by our president; (iii) the president of each such subsidiary entered into a management contract with our president; and (iv) our evaluation committee conducted performance evaluation of such subsidiaries. However, following such designation, akin to the appointment process applicable to us, (i) the President of the Republic appoints the presidents and standing directors of our generation subsidiaries that concurrently serve as members of the audit committees; (ii) the selection ofnon-standing directors of these subsidiaries is subject to approval by the minister of the Ministry of Strategy and Finance; (iii) the president of each such generation subsidiary is required to enter into a management contract directly with the minister of the Ministry of Trade, Industry and Energy; and the Public Agencies Operating Committee conducts performance evaluation of such subsidiaries.

Our Control over the Generation Subsidiaries

Designation of our generation subsidiaries as “market-oriented public enterprises” was intended to promote responsible management by and improve operational efficiency of government-affiliated electricity companies by fostering competition among them so as to provide improved service to the general public. Such designation also has had the effect of the Government exercising greater direct control over the appointment of the governing body of our generation subsidiaries (in ways that are similar to how the Government exercises such control over us as our majority shareholder as well as our regulator).

In addition, the Government has imposed a number of regulations that further affect the respective operational boundaries between us and our generation subsidiaries, including as follows:

• In August 2010, in furtherance of the Act on the Management of Public Institutions, the Ministry of Strategy and Finance announced the Proposal for the Improvement in the Structure of the Electric Power Industry, which was designed to promote responsible management by and improve operational efficiency of government-affiliated electricity companies by fostering competition among them. Key initiatives of the proposal included the following: (i) maintain the current structure of having six generation subsidiaries and designate the six generation subsidiaries as market-oriented public enterprises under the Act on the Management of Public Institutions in order to foster competition among the generation subsidiaries and promote efficiency in their operations, and (ii) clarify the scope of the business of us and the six generation subsidiaries (namely, that we shall manage the financial structure and governance of the six generation subsidiaries and nuclear power plant and overseas resources development projects, while the six generation subsidiaries will have greater autonomy with respect to construction and management of generation units and procurement of fuel), among others.

• In January 2011, the Ministry of Strategy and Finance created a “joint cooperation unit” consisting of officers and employees selected from the five thermal power generation subsidiaries in order to reduce inefficiencies in areas such as fuel transportation, inventories, materials and equipment and construction, etc. and allow the thermal power generation subsidiaries to continue utilizing the benefits of economy of scale after split off of our generation business units into separate subsidiaries. The purpose of the joint cooperation unit was to give greater autonomy to the generation subsidiaries with regard to power plant construction and management and fuel procurements, and thereby enhance efficiency in operating power plants. The main functions of the joint cooperation unit are as follows: (i) maintain inventories of bituminous coal through volume exchanges and joint purchases, (ii) reduce shipping and demurrage expenses through joint operation and distribution of dedicated vessels, (iii) reduce costs by sharing information on generation material inventories and (iv) sharing human resources among the five thermal power generation subsidiaries for construction projects, among other things.

• In June 2016, the Government announced the Proposal for Adjustment of Functions of Public Institutions (Energy Sector) for the purpose of streamlining the operations of government-affiliated energy companies by discouraging them from engaging in overlapping or similar businesses with each other, reducingnon-core assets and activities and improving management and operational efficiency. The initiatives contemplated in this proposal that would affect us and our generation subsidiaries

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include the following: (i) the generation companies should take on greater responsibilities in overseas resource exploration and production projects (as these involve procurement of fuels necessary for electricity generation), while fostering cooperation among each other through closer coordination, (ii) KHNP should take a greater role in export of nuclear technology, and (iii) the current system of retail sale of electricity toend-users should be liberalized to encourage more competition.

However, notwithstanding these developments, we, also a government-controlled entity, remain as the sole shareholder of our generation subsidiaries and continue to exercise significant control over them in such capacity as the sole shareholder well as through other practical means as further described below.

First, as the sole shareholder, we continue to have the right, under the Act on the Management of Public Institutions, to approve or disapprove the appointment of key members of the governing body of our generation subsidiaries (namely, the president and the standing andnon-standing directors) by way of a vote at the general shareholders meeting before such appointments are ultimately approved and made by the President of the Republic (in the case of the presidents and standing directors concurrently serving as audit committee members of the generation subsidiaries) or by the president of each generation subsidiary (in the case of other standing directors of such generation subsidiary). Our right to exercise such voting right as a shareholder is also protected by the Commercial Code of Korea.

Second, in practice we retain significant control over our generation subsidiaries through the following means:

• We are the sole purchaser of electricity produced and sold by the generation subsidiaries and continue to have near monopoly in terms of transmitting and distributing electricity in Korea. Accordingly, we continue to have significant influence over our generation subsidiaries in the electricity industry.

• Pursuant to the Electricity Business Act, the adjusted coefficient must be determined so that the price of electricity sold by our generation subsidiaries to us shall have the effect of ensuring a fair rate of return to us as a standalone entity, which means any imbalance caused by excess profits taken by our generation subsidiaries to our loss must be corrected. Since we and the generation subsidiaries participate in the determination of the adjusted coefficient, such determination process can be used as a way for us to exert indirect influence on our generation subsidiaries.

• Our president holds regular meetings (known as “CEO Meetings”) with the presidents of our generation subsidiaries for which our president determines whether and when to convene such meetings, sets the agenda for such meetings and chairs such meetings. Since significant issues that jointly affect us and our generation subsidiaries are often discussed and decided at these meetings, the leadership role exercised by our president in such meetings is significant in setting the policies and direction for us and our generation subsidiaries as a whole.

• We maintain and operate the Affiliated Company Management Team within the parent company organizational structure. The purpose of this team is to support and coordinate the management of the generation subsidiaries. Activities of the Affiliated Company Management Team include preparation of the CEO Meetings, deliberation of major issues to be discussed at CEO Meetings, convening a general meeting of shareholders of the generation subsidiaries and coordination on the decision-making process for the general meeting of shareholders of our generation subsidiaries.

• We also maintain and operate the Committee of Investment Review, which reviews all material domestic and overseas investment projects of our generation subsidiaries before such projects are presented to the board of directors of our generation subsidiaries for approval. Such advance presentation to this Committee is required under the internal regulations of our generation subsidiaries. Accordingly, each generation subsidiary must submit a business plan to us two weeks prior to the meeting of the board of directors of the generation subsidiary for any investment project that is not already covered by the Seventh Basic Plan. Our president selects the chairman of this Committee, typically from the pool of our department heads, as well as its other members.

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In addition, our control over our generation subsidiaries is derived from the fact that the Government owns the majority of our shares and effectively controls us as the supervisor and regulator in a heavily regulated industry, and in effect also exercises the same degree of control over our generation subsidiaries through our sole share ownership over our generation subsidiaries as well as its statutory power of direct appointment of the governing bodies of our generation subsidiaries. In effect, we are acting as an intermediate holding company in a vertical control structure involving the Government, us and our generation subsidiaries, where the Government holds the ultimate control over both us and our generation subsidiaries and exercises its such control over our generation subsidiaries in part through us acting as the sole shareholder and the parent company of our generation subsidiaries.

Differences in Korean/New York Stock Exchange Corporate Governance Practices

We are a “foreign private issuer” (as such term is defined in Rule3b-4 under the Exchange Act), and our ADSs are listed on the New York Stock Exchange, or NYSE. Under Section 303A of the NYSE Listed Company Manual, NYSE-listed companies that are foreign private issuers are permitted to follow home country practice in lieu of the corporate governance provisions specified by the NYSE with limited exceptions. Under the NYSE Listed Company Manual, we as a foreign private issuer are required to disclose significant differences between NYSE’s corporate governance standards and those we follow under Korean law. The following summarizes some significant ways in which our corporate governance practices differ from those followed by U.S. companies listed on the NYSE under the listing rules of the NYSE.

Majority of Independent Directors on the Board

Under the NYSE listing rules, U.S. companies listed on the NYSE must have a board, the majority of which is comprised of independent directors satisfying the requirements of “independence” as set forth in Rule10A-3 under the Exchange Act. No director qualifies as “independent” unless the board of directors affirmatively determines that the director has no material relationship with the listed company (either directly or as a partner, shareholder or officer of an organization that has a relationship with us). The NYSE rules include detailed tests for determining director independence. As a foreign private issuer, we are exempt from this requirement. Under the Act on the Management of Public Institutions, more thanone-half of our directors must benon-standing directors. For a discussion on qualifications ofnon-standing directors, see Item 6.A. “Directors and Senior Management—Board of Directors.” The Financial Investment Services and Capital Markets Act of Korea deems anon-standing director nominated pursuant to other applicable laws (such as the Act on the Management of Public Institutions) as an “outside”or “non-executive” director. Under the Act on the Management of Public Institutions, anon-standing director is appointed by the Ministry of Strategy and Finance following the review and resolution of the Public Agencies Operating Committee from a pool of candidates recommended by the director nomination committee and an approval at our general meeting shareholders, and must have ample knowledge and experience in business management. Government officials that are not part of the teaching staff in national and public schools are ineligible to become ournon-standing directors.

Executive Session

Under the NYSE listing rules,non-management directors of U.S. companies listed on the NYSE are required to meet on a regular basis without management present and independent directors must meet separately at least once per year. While no such requirement currently exists under applicable Korean law, listing standards or our Articles of Incorporation, executive sessions were held from time to time in 2016 in order to promote the exchange of diverse opinions bynon-standing directors.

Audit Committee

Under the NYSE listing rules, listed companies must have an audit committee that has a minimum of three members, and all audit committee members must satisfy the requirements of independence set forth in Section 303A.02 of the NYSE Listed Company Manual and Rule10A-3 under the Exchange Act. Our audit committee

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members meet the requirements of independence set forth in Section 303A.02 of the NYSE Listed Company Manual and Rule10A-3 under the Exchange Act. The audit committee must be directly responsible for the appointment, compensation, retention and oversight of the work of the independent registered public accountants. Our audit committee performs the roles and responsibilities required of an audit committee under the Sarbanes-Oxley Act, including the supervision of the audit by the independent registered public accountants. Under the Korea Exchange listing rules and the Korean Commercial Code, a large listed company must also establish an audit committee of which at leasttwo-thirds of its members must benon-standing directors and whose chairman must be anon-standing director. Under the Act on the Management of Public Institutions, the Korean Commercial Code, the amended Articles of Incorporation and the Korea Exchange listing rules, we are required to maintain an audit committee consisting of three members, of which not less than two members are required to benon-standing directors. Our audit committee is in compliance with the foregoing requirements under the Act on the Management of Public Institutions, the Korean Commercial Code, the amended Articles of Incorporation and the Korea Exchange listingrules.

Nomination/Corporate Governance Committee

Under the NYSE listing rules, U.S. companies listed on the NYSE must have a nomination/corporate governance committee composed entirely of independent directors. In addition to identifying individuals qualified to become board members, this committee must develop and recommend to the board a set of corporate governance principles. Under the Act on the Management of Public Institutions, we are required to have a director nomination committee which consists ofnon-standing directors and ad hoc members appointed by our Board of Directors. Our standing directors and executives as well as governmental officials that are not part of the teaching staff in national and public schools are ineligible to become a member of our director nomination committee. There is no requirement to establish a corporate governance committee under applicable Korean law.

Pursuant to the NYSE listing standards,non-management directors must meet on a regular basis without management present and independent directors must meet separately at least once per year. No such requirement currently exists under applicable Korean law.

Compensation Committee

Under the NYSE listing rules, U.S. companies listed on the NYSE are required to have a compensation committee which is composed entirely of independent directors. In January 2013, the SEC approved amendments to the listing rules of NYSE and NASDAQ regarding the independence of compensation committee members and the appointment, payment and oversight of compensation consultants. The listing rules were adopted as required by Section 952 of the Dodd-Frank Act and rule10C-1 of the Exchange Act, which direct the national securities exchanges to prohibit the listing of any equity security of a company that is not in compliance with the rule’s compensation committee director and advisor independence requirements. Certain elements of the listing rules became effective on July 1, 2013 and companies listed on the NYSE must comply with such listing rules by the earlier of the company’s first annual meeting after January 15 or October 31, 2014.

No such requirement currently exists under applicable Korean law or listing standards, and we currently do not have a compensation committee.

Corporate Governance Guidelines and Code of Business Conduct and Ethics

Under the NYSE listing rules, U.S. companies listed on the NYSE are required to establish corporate governance guidelines and to adopt a code of business conduct and ethics for directors, officers and employees, and promptly disclose any waivers of the code for directors or executive officers. As a foreign private issuer, we are exempt from this requirement. Pursuant to the requirements of the Sarbanes-Oxley Act, we have adopted a code of ethics applicable to our President & Chief Executive Officer and all other directors and executive officers including the Chief Financial Officer and the Chief Accounting Officer, as well as all financial, accounting and

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other officers that are involved in the preparation and disclosure of our consolidated financial statements and internal control of financial reporting pursuant to Section 404 of the Sarbanes-Oxley Act. We have also adopted an insider reporting system in compliance with Section 301 of the Sarbanes-Oxley Act. The code of ethics applicable to our executive officers and financial officers are available onwww.kepco.co.kr.

Shareholder Approval of Equity Compensation Plans

Under the NYSE listing rules, shareholders of U.S. companies listed on the NYSE are required to approve all equity compensation plans. Under Korean law and regulations, stock options can be granted to employees to the extent expressly permitted by the articles of incorporation. We currently do not have any equity compensation plans.

Annual Certification of Compliance

Under the NYSE listing rules, a chief executive officer of a U.S. company listed on the NYSE must annually certify that he or she is not aware of any violation by the company of NYSE corporate governance standards. As a foreign private issuer, we are not subject to this requirement. However, in accordance with rules applicable to both U.S. companies and foreign private issuers, we are required to promptly notify the NYSE in writing if any executive officer becomes aware of any material noncompliance with the NYSE corporate governance standards applicable to us. In addition, foreign private issuers, including us, are required to submit to the NYSE an annual written affirmation relating to compliance with Sections 303A.06 and 303A.11 of the NYSE listed company manual, which are the NYSE corporate governance standards applicable to foreign private issuers. All written affirmations must be executed in the form provided by the NYSE, without modification. An annual written affirmation is required to be submitted to the NYSE within 30 days of filing with the SEC our annual report on Form20-F. We have been in compliance with this requirement in all material respects and plan to submit such affirmation within the prescribed time line.

Whistle Blower Protection

On May 25, 2011, the SEC adopted final rules to implement whistleblower provisions of the Dodd-Frank Act, which are applicable to foreign private issuers with securities registered under the U.S. securities laws. The final rules provide that any eligible whistleblower who voluntarily provides the SEC with original information that leads to the successful enforcement of an action brought by the SEC under U.S. securities laws must receive an award of between 10 and 30 percent of the total monetary sanctions collected if the sanctions exceed US$1,000,000. An eligible whistleblower is defined as someone who provides information about a possible violation of the securities laws that he or she reasonably believes has occurred, is ongoing, or is about to occur. The possible violation does not need to be material, probably or even likely, but the information must have a “facially plausible relationship to some securities law violation”; frivolous submissions would not qualify. The final rules also prohibit retaliation against the whistleblower. While the final rules do not require employees to first report allegations of wrongdoing through a company’s corporate compliance system, they do seek to incentivize whistleblowers to utilize internal corporate compliance first by, among other things, (i) giving employees who first report information internally the benefit of the internal reporting date for purposes of the SEC program so long as the whistleblower submits the same information to the SEC within 120 days of the initial disclosure; (ii) clarifying that the SEC will consider, as part of the criteria for determining the amount of a whistleblower’s award, whether the whistleblower effectively utilized the company’s corporate compliance program or hindered the function of the program; and (iii) crediting a whistleblower who reports internally first and whose company passes the information along to the SEC, which would mean the whistleblower could receive a potentially higher award for information gathered in an internal investigation initiated as a result of the whistleblower’s internal report.

In addition, the final rules address concerns that the whistleblower rules incentivize officers, directors and those with legal, audit, compliance or similar responsibilities to abuse these positions by making whistleblower

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complaints to the SEC with respect to information they obtained in these roles by generally providing that information obtained through a communication subject to attorney-client privilege or as a result of legal representation would not be eligible for a whistleblower award unless disclosure would be permitted by attorney conduct rules. Accordingly, officers and directors, auditors and compliance personnel and other persons in similar roles would not be eligible to receive awards for information received in these positions unless (x) they have a reasonable basis to believe that (1) disclosure of the information is necessary to prevent the entity from engaging in conduct that is likely to cause substantial injury to the financial interests of the entity or investors; or (2) the entity is engaging in conduct that will impede an investigation of the misconduct, for example, destroying documents or improperly influencing witnesses; or (y) 120 days have passed since the whistleblower provided the information to senior responsible persons at the entity or 120 days have passed since the whistleblower received the information at a time when these people were already aware of the information.

In Korea, under the Financial Investment Services and Capital Markets Act, anyone may provide or furnish the Financial Services Commission or the Securities and Futures Commission with information on unfair trading or any other violation of the Financial Investment Services and Capital Markets Act. The Financial Services Commission shall keep the identity of the whistleblower confidential, and any institution, organization or company to which the whistleblower belongs may not treat the whistleblower unfavorably, directly or indirectly. In addition, the Financial Services Commission may also reward the whistleblower within the limit of the budget of the Financial Services Commission.

ITEM 16.H. MINE SAFETY DISCLOSURE

Not applicable.

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PART III

ITEM 17. FINANCIAL STATEMENTS

Not applicable.

ITEM 18. FINANCIAL STATEMENTS

Reference is made to Item 19. “Exhibits” for a list of all financial statements filed as part of this annual report.

ITEM 19. EXHIBITS

(a) Financial Statements filed as part of this Annual Report

See Index to Financial Statements on pageF-1 of this annual report.

(b) Exhibits filed as part of this Annual Report

See Index of Exhibits beginning on pageE-1 of this annual report.

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SIGNATURES

The registrant hereby certifies that it meets all of the requirements for filing on Form20-F and that it has duly caused and authorized the undersigned to sign this Annual Report on its behalf.

KOREA ELECTRIC POWER CORPORATION
By:	/s/    Cho,Hwan-Eik
Name:	Cho,Hwan-Eik
Title:	President and Chief Executive Officer
Date:	April 28, 2017

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INDEX TO FINANCIAL STATEMENTS

	Page
Report of Independent Registered Public Accounting Firm KPMG Samjong Accounting Corp. on Consolidated Financial Statements		F-2
Report of Independent Registered Public Accounting Firm KPMG Samjong Accounting Corp. on Internal Control Over Financial Reporting		F-3
Consolidated Statements of Financial Position as of December  31, 2015 and 2016		F-4
Consolidated Statements of Comprehensive Income for the Years Ended December 31, 2014, 2015 and 2016		F-6
Consolidated Statements of Changes in Equity for the Years Ended December 31, 2014, 2015 and 2016		F-8
Consolidated Statements of Cash Flows for the Years Ended December  31, 2014, 2015 and 2016		F-11
Notes to the Consolidated Financial Statements		F-13

F-1

REPORT OF INDEPENDENT REGISTERED PUBLIC

ACCOUNTING FIRM ON CONSOLIDATED FINANCIAL STATEMENTS

To the Shareholders and Board of Directors of

Korea Electric Power Corporation:

We have audited the accompanying consolidated statements of financial position of Korea Electric Power Corporation and subsidiaries (the “Company”) as of December 31, 2015 and 2016, and the related consolidated statements of comprehensive income, changes in equity and cash flows for each of the years in the three-year period ended December 31, 2016. These consolidated financial statements are the responsibility of the Company’s management. Our responsibility is to express an opinion on these consolidated financial statements based on our audits.

We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. An audit includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements. An audit also includes assessing the accounting principles used and significant estimates made by management, as well as evaluating the overall financial statement presentation. We believe that our audits and the report of the other auditors provide a reasonable basis for our opinion.

In our opinion, the consolidated financial statements referred to above present fairly, in all material respects, the consolidated financial position of Korea Electric Power Corporation and subsidiaries as of December 31, 2015 and 2016 and of the consolidated results of their operations and their cash flows for each of the years in the three-year period ended December 31, 2016, in conformity with International Financial Reporting Standards as issued by the International Accounting Standards Board.

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), the Company’s internal control over financial reporting as of December 31, 2016, based on the criteria established in Internal Control—Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission and our report dated April 28, 2017 expressed an unqualified opinion on the effectiveness of the Company’s internal control over financial reporting.

/s/ KPMG Samjong Accounting Corp.

KPMG Samjong Accounting Corp.

Seoul, Korea

April 28, 2017

F-2

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM ON

INTERNAL CONTROL OVER FINANCIAL REPORTING

To the Shareholders and Board of Directors of

Korea Electric Power Corporation:

We have audited Korea Electric Power Corporation and subsidiaries’ (the “Company”) internal control over financial reporting as of December 31, 2016, based on criteria established in Internal Control—Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission. The Company’s management is responsible for maintaining effective internal control over financial reporting, and for its assessment of the effectiveness of internal control over financial reporting included in the accompanying Management’s Annual Report on Internal Control Over Financial Reporting. Our responsibility is to express an opinion on the Company’s internal control over financial reporting based on our audit.

We conducted our audit in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all material respects. Our audit included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, testing and evaluating the design and operating effectiveness of internal control based on the assessed risk, and performing such other procedures as we considered necessary in the circumstances. We believe that our audit provides a reasonable basis for our opinion.

A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the group’s assets that could have a material effect on the financial statements.

Because of the inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

In our opinion, the Company maintained, in all material respects, effective internal control over financial reporting as of December 31, 2016, based on the criteria established in Internal Control—Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission.

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), the consolidated statements of financial position of Korea Electric Power Corporation and subsidiaries as of December 31, 2015 and 2016, and the related consolidated statements of comprehensive income, changes in equity and cash flows for each of the years in the three-year period ended December 31, 2016 and our report dated April 28, 2017 expressed an unqualified opinion on those consolidated financial statements.

/s/ KPMG Samjong Accounting Corp.

KPMG Samjong Accounting Corp.

Seoul, Korea

April 28, 2017

F-3

KOREA ELECTRIC POWER CORPORATION AND SUBSIDIARIES

Consolidated Statements of Financial Position

As of December 31, 2015 and 2016

	Note			2015		2016
				In millions of won
Assets
Current assets
Cash and cash equivalents		5,6,7,45	￦		3,783,065		3,051,353
Current financial assets, net		5,10,11,12,45			5,335,621		2,671,989
Trade and other receivables, net		5,8,14,20,45,46,47			7,473,548		7,788,876
Inventories, net		13			4,946,413		5,479,443
Income tax refund receivables		41			9,081		19,163
Currentnon-financial assets		15			397,950		631,860
Assetsheld-for-sale		42			79,647		65,842
Total current assets					22,025,325		19,708,526
Non-current assets
Non-current financial assets, net		5,6,9,10,11,12,45			2,495,554		2,657,494
Non-current trade and other receivables, net		5,8,14,45,46,47			1,798,419		1,903,515
Property, plant and equipment, net		18,27,49			141,361,351		145,743,056
Investment properties, net		19,27			269,910		353,680
Goodwill		16			2,582		2,582
Intangible assets other than goodwill, net		21,27,46			855,832		980,821
Investments in associates		4,17			4,405,668		4,092,252
Investments in joint ventures		4,17			1,287,862		1,418,196
Deferred tax assets		41			623,623		795,131
Non-currentnon-financial assets		15			131,233		181,789
Totalnon-current assets					153,232,034		158,128,516
Total Assets		4	￦		175,257,359		177,837,042
Liabilities
Current liabilities
Trade and other payables, net		5,22,24,45,47	￦		4,735,697		5,585,411
Current financial liabilities, net		5,11,23,45,47			7,857,198		8,942,329
Income tax payables		41			2,218,060		1,843,288
Currentnon-financial liabilities		20,28,29			6,320,711		6,368,210
Current provisions		26,45			1,579,176		1,999,988
Total current liabilities					22,710,842		24,739,226
Non-current liabilities
Non-current trade and other payables, net		5,22,24,45,47			3,718,435		3,558,175
Non-current financial liabilities, net		5,11,23,45,47			51,062,811		44,835,562
Non-currentnon-financial liabilities		28,29			7,092,252		7,591,605
Employee benefits liabilities, net		25,45			1,503,107		1,686,258
Deferred tax liabilities		41			8,362,683		8,948,520
Non-current provisions		26,45			12,864,754		13,427,151
Totalnon-current liabilities					84,604,042		80,047,271
Total Liabilities		4	￦		107,314,884		104,786,497

(Continued)

F-4

KOREA ELECTRIC POWER CORPORATION AND SUBSIDIARIES

Consolidated Statements of Financial Position, Continued

As of December 31, 2015 and 2016

	Note			2015			2016
				In millions of won
Equity
Contributed capital		1,30,45
Share capital			￦		3,209,820			3,209,820
Share premium					843,758			843,758
					4,053,578			4,053,578
Retained earnings		31
Legal reserves					1,604,910			1,604,910
Voluntary reserves					23,720,167			31,847,275
Unappropriated retained earnings					22,862,164			19,721,686
					48,187,241			53,173,871
Other components of equity		34
Other capital surplus					1,197,388			1,235,146
Accumulated other comprehensive loss					(98,713	)		(33,875	)
Other equity					13,294,973			13,294,973
					14,393,648			14,496,244
Equity attributable to owners of the controlling company					66,634,467			71,723,693
Non-controlling interests		16, 33			1,308,008			1,326,852
Total Equity			￦		67,942,475			73,050,545
Total Liabilities and Equity			￦		175,257,359			177,837,042

See accompanying notes to the consolidated financial statements.

F-5

KOREA ELECTRIC POWER CORPORATION AND SUBSIDIARIES

Consolidated Statements of Comprehensive Income

For the years ended December 31, 2014, 2015 and 2016

	Note			2014			2015			2016
				In millions of won, except per share information
Sales		4,35,45,47
Sales of goods			￦		53,706,828			54,367,036			55,379,487
Sales of construction services		20			2,965,185			3,761,204			4,026,857
Sales of services					451,013			453,487			356,743
					57,123,026			58,581,727			59,763,087
Cost of sales		13,25,43,47
Cost of sales of goods					(46,509,555	)		(41,348,917	)		(41,237,372	)
Cost of sales of construction services					(2,752,610	)		(3,563,120	)		(3,755,144	)
Cost of sales of services					(500,787	)		(545,692	)		(557,037	)
					(49,762,952	)		(45,457,729	)		(45,549,553	)
Gross profit					7,360,074			13,123,998			14,213,534
Selling and administrative expenses		25,36,43,47			(1,924,366	)		(2,153,261	)		(2,639,232	)
Other income		37			754,186			808,214			840,184
Other expenses		37			(88,220	)		(108,848	)		(188,624	)
Other gains, net		38			107,396			8,610,773			70,498
Operating profit		4			6,209,070			20,280,876			12,296,360
Finance income		5,11,39			885,290			1,182,988			791,543
Finance expenses		5,11,40			(3,140,038	)		(3,015,457	)		(2,437,087	)
Profit (loss) related to associates, joint ventures and subsidiaries		4,17
Share in profit of associates and joint ventures					319,506			280,794			224,435
Gain on disposal of investments in associates and joint ventures					47,072			4,731			52
Gain on disposal of investments in subsidiaries		16			40,449			8,376			—
Share in loss of associates and joint ventures					(78,493	)		(86,522	)		(243,361	)
Loss on disposal of investments in associates and joint ventures					(1,254	)		—			(2,935	)
Impairment loss on investments in associates and joint ventures		17			(52,279	)		—			(115,539	)
Loss on disposal of subsidiaries					(17	)		—			—
					274,984			207,379			(137,348	)
Profit before income tax					4,229,306			18,655,786			10,513,468
Income tax expense		41			(1,430,339	)		(5,239,413	)		(3,365,141	)
Profit for the period			￦		2,798,967			13,416,373			7,148,327

(Continued)

F-6

KOREA ELECTRIC POWER CORPORATION AND SUBSIDIARIES

Consolidated Statements of Comprehensive Income, Continued

For the years ended December 31, 2014, 2015 and 2016

	Note			2014			2015			2016
				In millions of won, except per share information
Other comprehensive income (loss)		5,11,25,31,34
Items that will not be reclassified subsequently to profit or loss:
Remeasurements of defined benefit liability, net of tax		25,31	￦		(108,430	)		(87,861	)		(75,926	)
Share in other comprehensive loss of associates and joint ventures, net of tax		31			(1,899	)		(283	)		(2,515	)
Items that are or may be reclassified subsequently to profit or loss:
Net change in the unrealized fair value ofavailable-for-sale financial assets, net of tax		34			(97,251	)		9,648			61,279
Net change in the unrealized fair value of derivatives using cash flow hedge accounting, net of tax		5,11,34			(84,793	)		4,409			28,414
Foreign currency translation of foreign operations, net of tax		34			(70,576	)		18,535			41,360
Share in other comprehensive income (loss) of associates and joint ventures, net of tax		34			5,228			89,558			(54,914	)
Other comprehensive income (loss), net of tax					(357,721	)		34,006			(2,302	)
Total comprehensive income for the period			￦		2,441,246			13,450,379			7,146,025
Profit or loss attributable to:
Owners of the controlling company		44	￦		2,686,873			13,289,127			7,048,581
Non-controlling interests					112,094			127,246			99,746
			￦		2,798,967			13,416,373			7,148,327
Total comprehensive income attributable to:
Owners of the controlling company			￦		2,335,827			13,308,132			7,041,557
Non-controlling interests					105,419			142,247			104,468
			￦		2,441,246			13,450,379			7,146,025
Earnings per share		44
Basic and diluted earnings per share			￦		4,290			20,701			10,980

See accompanying notes to the consolidated financial statements.

F-7

KOREA ELECTRIC POWER CORPORATION AND SUBSIDIARIES

Consolidated Statements of Changes in Equity

For the years ended December 31, 2014, 2015 and 2016

		Equity attributable to owners of the controlling company											Non- controlling Interests			Total equity
		Contributed capital		Retained earnings			Other components of equity			Subtotal
		In millions of won
Balance at January 1, 2014	￦		4,053,578		32,766,086			13,440,004			50,259,668			1,191,068			51,450,736
Total comprehensive income for the period
Profit for the period			—		2,686,873			—			2,686,873			112,094			2,798,967
Items that will not be reclassified subsequently to profit or loss:
Remeasurements of defined benefit liability, net of tax			—		(91,340	)		—			(91,340	)		(17,090	)		(108,430	)
Share in other comprehensive loss of associates and joint ventures, net of tax			—		(1,899	)		—			(1,899	)		—			(1,899	)
Items that are or may be reclassified subsequently to profit or loss:
Net change in the unrealized fair value ofavailable-for-sale financial assets, net of tax			—		—			(97,263	)		(97,263	)		12			(97,251	)
Net change in the unrealized fair value of derivatives using cash flow hedge accounting, net of tax			—		—			(80,218	)		(80,218	)		(4,575	)		(84,793	)
Foreign currency translation of foreign operations, net of tax			—		—			(84,962	)		(84,962	)		14,386			(70,576	)
Share in other comprehensive income of associates and joint ventures, net of tax			—		—			4,636			4,636			592			5,228
Transactions with owners of the Company, recognized directly in equity
Dividends paid			—		(56,073	)		—			(56,073	)		(130,969	)		(187,042	)
Issuance of share capital by subsidiaries			—		—			(1,235	)		(1,235	)		7,453			6,218
Equity transaction within consolidation scope—other than issuance of share capital			—		—			237,159			237,159			72,452			309,611
Disposal of treasury stocks			—		—			825,985			825,985			—			825,985
Changes in consolidation scope			—		—			—			—			(5,281	)		(5,281	)
Dividends paid (hybrid securities)			—		—			—			—			(16,463	)		(16,463	)
Balance at December 31, 2014	￦		4,053,578		35,303,647			14,244,106			53,601,331			1,223,679			54,825,010

(Continued)

F-8

KOREA ELECTRIC POWER CORPORATION AND SUBSIDIARIES

Consolidated Statements of Changes in Equity, Continued

For the years ended December 31, 2014, 2015 and 2016

		Equity attributable to owners of the controlling company											Non- controlling Interests			Total equity
		Contributed capital		Retained earnings			Other components of equity			Subtotal
		In millions of won
Balance at January 1, 2015	￦		4,053,578		35,303,647			14,244,106			53,601,331			1,223,679			54,825,010
Total comprehensive income for the period
Profit for the period			—		13,289,127			—			13,289,127			127,246			13,416,373
Items that will not be reclassified subsequently to profit or loss:
Remeasurements of defined benefit liability, net of tax			—		(84,271	)		—			(84,271	)		(3,590	)		(87,861	)
Share in other comprehensive loss of associates and joint ventures, net of tax			—		(280	)		—			(280	)		(3	)		(283	)
Items that are or may be reclassified subsequently to profit or loss:
Net change in the unrealized fair value ofavailable-for-sale financial assets, net of tax			—		—			9,744			9,744			(96	)		9,648
Net change in the unrealized fair value of derivatives using cash flow hedge accounting, net of tax			—		—			3,157			3,157			1,252			4,409
Foreign currency translation of foreign operations, net of tax			—		—			1,179			1,179			17,356			18,535
Share in other comprehensive income of associates and joint ventures, net of tax			—		—			89,476			89,476			82			89,558
Transactions with owners of the Company, recognized directly in equity
Dividends paid			—		(320,982	)		—			(320,982	)		(86,071	)		(407,053	)
Issuance of shares of capital by subsidiaries and others			—		—			2,536			2,536			12,329			14,865
Equity transaction within consolidation scope—other than issuance of share capital			—		—			44,166			44,166			9,046			53,212
Changes in consolidation scope			—		—			(716	)		(716	)		23,229			22,513
Dividends paid (hybrid securities)			—		—			—			—			(16,455	)		(16,455	)
Others			—		—			—			—			4			4
Balance at December 31, 2015	￦		4,053,578		48,187,241			14,393,648			66,634,467			1,308,008			67,942,475

(Continued)

F-9

KOREA ELECTRIC POWER CORPORATION AND SUBSIDIARIES

Consolidated Statements of Changes in Equity, Continued

For the years ended December 31, 2014, 2015 and 2016

		Equity attributable to owners of the controlling company											Non- controlling Interests			Total equity
		Contributed capital		Retained earnings			Other components of equity			Subtotal
		In millions of won
Balance at January 1, 2016	￦		4,053,578		48,187,241			14,393,648			66,634,467			1,308,008			67,942,475
Total comprehensive income for the period
Profit for the period			—		7,048,581			—			7,048,581			99,746			7,148,327
Items that will not be reclassified subsequently to profit or loss:
Remeasurements of defined benefit liability, net of tax			—		(69,330	)		—			(69,330	)		(6,596	)		(75,926	)
Share in other comprehensive income (loss) of associates and joint ventures, net of tax			—		(2,532	)		—			(2,532	)		17			(2,515	)
Items that are or may be reclassified subsequently to profit or loss:
Net change in the unrealized fair value ofavailable-for-sale financial assets, net of tax			—		—			61,275			61,275			4			61,279
Net change in the unrealized fair value of derivatives using cash flow hedge accounting, net of tax			—		—			27,075			27,075			1,339			28,414
Foreign currency translation of foreign operations, net of tax			—		—			31,406			31,406			9,954			41,360
Share in other comprehensive income (loss) of associates and joint ventures, net of tax			—		—			(54,918	)		(54,918	)		4			(54,914	)
Transactions with owners of the Company, recognized directly in equity
Dividends paid			—		(1,990,089	)		—			(1,990,089	)		(99,982	)		(2,090,071	)
Issuance of shares of capital by subsidiaries and others			—		—			1,750			1,750			14,809			16,559
Equity transaction within consolidation scope—other than issuance of share capital			—		—			36,008			36,008			12,299			48,307
Changes in consolidation scope			—		—			—			—			3,705			3,705
Dividends paid (hybrid securities)			—		—			—			—			(16,455	)		(16,455	)
Balance at December 31, 2016	￦		4,053,578		53,173,871			14,496,244			71,723,693			1,326,852			73,050,545

See accompanying notes to the consolidated financial statements.

F-10

KOREA ELECTRIC POWER CORPORATION AND SUBSIDIARIES

Consolidated Statements of Cash Flows

For the years ended December 31, 2014, 2015 and 2016

		2014			2015			2016
		In millions of won
Cash flows from operating activities
Profit for the period	￦		2,798,967			13,416,373			7,148,327
Adjustments for:
Income tax expense			1,430,339			5,239,413			3,365,141
Depreciation			7,797,046			8,269,118			8,881,273
Amortization			76,413			72,266			79,715
Employee benefit expense			121,406			314,692			373,753
Bad debt expense			54,999			18,350			37,815
Interest expense			2,351,624			2,015,684			1,752,868
Loss on sale of financial assets			2,700			3,008			9
Loss on disposal of property, plant and equipment			50,152			1,933			4,996
Loss on abandonment of property, plant, and equipment			309,451			365,056			426,519
Impairment loss on property, plant and equipment			38,107			30,344			—
Impairment loss on intangible assets			42			22			3,945
Loss on disposal of intangible assets			18			16			158
Accretion expense to provisions, net			1,295,150			1,602,724			1,782,732
Loss on foreign currency translation, net			351,660			617,224			253,468
Valuation and transaction gain on derivative instruments, net			(143,239	)		(708,120	)		(231,630	)
Share in loss (income) of associates and joint ventures, net			(241,013	)		(194,272	)		18,926
Gain on disposal of financial assets			(98,065	)		(4	)		(1,482	)
Gain on disposal of property, plant and equipment			(85,775	)		(8,637,508	)		(74,035	)
Gain on disposal of intangible assets			(4	)		(32	)		—
Gain on disposal of investments in associates and joint ventures			(47,072	)		(4,731	)		(52	)
Loss on disposal of investments in associates and joint ventures			1,254			—			2,935
Gain on disposal of investments in subsidiaries			(40,449	)		(8,376	)		—
Loss on disposal of investments in subsidiaries			17			—			—
Impairment loss on investments in associates and joint ventures			52,279			—			115,539
Interest income			(191,456	)		(241,585	)		(241,778	)
Dividends income			(14,193	)		(14,069	)		(9,446	)
Impairment loss onavailable-for-sale securities			79,618			84,370			86,703
Others, net			(20,303	)		(35,107	)		66,260
			13,130,706			8,790,416			16,694,332
Changes in:
Trade receivables			96,294			715,498			200,529
Non-trade receivables			9,063			(17,102	)		(68,322	)
Accrued income			(207,155	)		17,051			69,151
Other receivables			(906	)		(9,441	)		10,093
Other current assets			75,410			67,520			(259,492	)
Inventories			(1,146,221	)		(1,190,188	)		(1,439,545	)
Othernon-current assets			47,119			(31,465	)		(2,792	)
Trade payables			(257,614	)		(1,577,551	)		141,994
Non-trade payables			(102,526	)		38,223			(8,379	)
Accrued expenses			(107,277	)		(410,744	)		(153,172	)
Other payables			—			964			—
Other current liabilities			2,249,714			870,945			284,417
Othernon-current liabilities			(317,437	)		377,617			809,699
Investments in associates and joint ventures			47,120			114,708			75,407
Provisions			(675,569	)		(1,033,502	)		(1,527,129	)
Payments of employee benefit obligations			(860,179	)		(43,100	)		(53,477	)
Plan assets			(231,342	)		(214,449	)		(312,125	)
			(1,381,506	)		(2,325,016	)		(2,233,143	)

F-11

(Continued)

KOREA ELECTRIC POWER CORPORATION AND SUBSIDIARIES

Consolidated Statements of Cash Flows, Continued

For the years ended December 31, 2014, 2015 and 2016

		2014			2015			2016
		In millions of won
Cash generated from operating activities	￦		14,548,167			19,881,773			21,609,516
Dividends received			13,518			38,565			10,294
Interest paid			(2,460,457	)		(2,176,040	)		(2,041,379	)
Interest received			167,269			133,875			240,878
Income taxes paid			(222,805	)		(935,068	)		(3,298,757	)
Net cash from operating activities			12,045,692			16,943,105			16,520,552
Cash flows from investing activities
Proceeds from disposals of associates and joint ventures			232,228			22,058			46,644
Acquisition of associates and joint ventures			(248,223	)		(116,114	)		(113,222	)
Proceeds from disposals of property, plant and equipment			111,260			9,843,796			207,960
Acquisition of property, plant and equipment			(14,547,499	)		(14,049,887	)		(12,028,789	)
Proceeds from disposals of intangible assets			1,819			467			430
Acquisition of intangible assets			(68,624	)		(87,946	)		(124,422	)
Proceeds from disposals of financial assets			1,060,117			242,856			10,876,017
Acquisition of financial assets			(975,104	)		(5,326,151	)		(8,130,621	)
Increase in loans			(135,001	)		(153,570	)		(206,092	)
Collection of loans			101,037			111,714			117,561
Increase in deposits			(335,518	)		(352,669	)		(468,734	)
Decrease in deposits			227,354			185,154			161,166
Receipt of government grants			108,681			52,696			32,878
Usage of government grants			(36,464	)		(13,372	)		(33,516	)
Net cash inflow (outflow) from changes in consolidation scope			44,319			(968	)		3,754
Other cash inflow (outflow) from investing activities, net			(715	)		(132,034	)		13,116
Net cash used in investing activities			(14,460,333	)		(9,773,970	)		(9,645,870	)
Cash flows from financing activities
Proceeds (Repayment of) from short-term borrowings, net			59,421			(65,355	)		(49,604	)
Proceeds from long-term borrowings and debt securities			9,566,625			4,178,454			2,302,060
Repayment of long-term borrowings and debt securities			(8,119,325	)		(8,960,706	)		(7,750,047	)
Payment of finance lease liabilities			(115,532	)		(110,040	)		(118,215	)
Settlement of derivative instruments, net			(444,243	)		73,348			73,246
Disposal of treasury stocks			852,962			—			—
Proceeds on disposal of partial interest in a subsidiary that does not involve loss of control			376,477			67,914			—
Change innon-controlling interest			12,595			36,105			10,538
Dividends paid (hybrid bond)			(16,463	)		(16,455	)		(16,455	)
Dividends paid			(186,985	)		(409,884	)		(2,088,429	)
Other cash outflow from financing activities, net			(356	)		—			(570	)
Net cash from (used in) financing activities			1,985,176			(5,206,619	)		(7,637,476	)
Net increase (decrease) in cash and cash equivalents before effect of exchange rate fluctuations			(429,465	)		1,962,516			(762,794	)
Effect of exchange rate fluctuations on cash held			(6,548	)		24,249			31,082
Net increase (decrease) in cash and cash equivalents			(436,013	)		1,986,765			(731,712	)
Cash and cash equivalents at January 1			2,232,313			1,796,300			3,783,065
Cash and cash equivalents at December 31	￦		1,796,300			3,783,065			3,051,353

See accompanying notes to the consolidated financial statements.

F-12

KOREA ELECTRIC POWER CORPORATION AND SUBSIDIARIES

Notes to the Consolidated Financial Statements

December 31, 2016

1. Reporting Entity (Description of the controlling company)

Korea Electric Power Corporation (“KEPCO”) was incorporated on January 1, 1982 in accordance with the Korea Electric Power Corporation Act (the “KEPCO Act”) to engage in the generation, transmission and distribution of electricity and development of electric power resources in the Republic of Korea. KEPCO also provides power plant construction services. KEPCO’s stock was listed on the Korea Stock Exchange on August 10, 1989 and KEPCO listed its Depository Receipts (DR) on the New York Stock Exchange on October 27, 1994. KEPCO’s head office is located in Naju,Jeollanam-do.

As of December 31, 2016, KEPCO’s share capital amounts to ￦3,209,820 million and KEPCO’s shareholders are as follows:

	Number of shares		Percentage of ownership
Government of the Republic of Korea		116,841,794		18.20	%
Korea Development Bank		211,235,264		32.90	%
Foreign investors		197,308,414		30.74	%
Other		116,578,605		18.16	%
		641,964,077		100.00	%

In accordance with the Restructuring Plan enacted on January 21, 1999 by the Ministry of Trade, Industry and Energy, KEPCO spun off its power generation divisions on April 2, 2001, resulting in the establishment of six power generation subsidiaries.

2. Basis of Preparation

The consolidated financial statements of Korea Electric Power Corporation and subsidiaries (the “Company”) were authorized for issuance by the Board of Directors on February 17, 2017.

(1) Statement of compliance

These consolidated financial statements have been prepared in accordance with International Financial Reporting Standards (“IFRS”) as issued by the International Accounting Standards Board (“IASB”).

(2) Basis of measurement

These consolidated financial statements have been prepared on the historical cost basis, except for the following material items in the consolidated statements of financial position:

• derivative financial instruments are measured at fair value

• available-for-sale financial assets are measured at fair value

• liabilities for defined benefit plans are recognized at the net of the total present value of defined benefit obligations less the fair value of plan assets

(3) Functional and presentation currency

These consolidated financial statements are presented in Korean won (“Won”), which is KEPCO’s functional and presentation currency.

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(4) Use of estimates and judgments

The preparation of the consolidated financial statements in conformity with IFRS requires management to make judgments, estimates and assumptions that affect the application of accounting policies and the reported amounts of assets, liabilities, income and expenses. Actual results may differ from these estimates.

Estimates and underlying assumptions are reviewed on an ongoing basis. Revisions to accounting estimates are recognized in the period in which the estimates are revised and in any future periods affected.

The following are the key assumptions concerning the future, and other key sources of estimation uncertainty at the end of the reporting period, that have a significant risk of causing a material adjustment to the carrying amounts of assets and liabilities within the next financial year.

(i) Unbilled revenue

Energy delivered but not metered nor billed are calculated at the reporting date are estimated based on consumption statistics and selling price estimates. Determination of the unbilled revenues at the end of the reporting period is sensitive to the estimated consumptions and prices based on statistics. Unbilled revenue recognized as of December 31, 2015 and 2016 are ￦1,599,592 million and ￦1,615,322 million, respectively.

(ii) Continuing operation of Wolsong Unit 1 nuclear power plant

Wolsong Unit 1 nuclear power plant of the Company commenced operations on November 21, 1982 and ended its operations on November 20, 2012 pursuant to its30-year operating license. On February 27, 2015, the Nuclear Safety and Security Commission (NSSC) evaluated the safety of operation on the Wolsong Unit 1 nuclear power plant and approved to continue its operation until November 20, 2022. As described in note 50, the lawsuit related to the validity of the approval of NSSC is currently ongoing. The consolidated financial statements were prepared based on the judgment of the Company that the approval of NSSC is valid and Wolsong Unit 1 nuclear power plant will be operating until 2022.

Information about critical judgments in applying accounting policies that have the most significant effect on the amounts recognized in the consolidated financial statements is included in the following notes:

• Note 17 – Investments in Associates and Joint Ventures

• Note 18 – Property, Plant and Equipment

• Note 20 – Construction Services Contracts

• Note 45 – Risk Management

Information about assumptions and estimation uncertainties that have a significant risk of resulting in a material adjustment within the next financial year is included in the following notes:

• Note 41 – Income taxes

• Note 25 – Employment benefits

(5) Changes in accounting policies

(i) IAS 16, ‘Property, Plant and Equipment’

The Company has adopted amendments to IAS 16, ‘Property, Plant and Equipment’, since January 1, 2016. Amendments to IAS 16, ‘Property, Plant and Equipment’, specify that the use of revenue-based methods to calculate the depreciation of an asset is not appropriate.

Upon adoption of the amendments, there is no significant impact on the Company’s consolidated financial statements.

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(ii) IAS 38, ‘Intangible Assets’

The Company has adopted amendments to IAS 38, ‘Intangible Assets’, since January 1, 2016. Amendments to IAS 38, ‘Intangible Assets’, introduce a rebuttable presumption that the use of revenue-based amortization methods for intangible assets is inappropriate. This presumption can be rebutted only when revenue and the consumption of the economic benefits of the intangible asset are highly correlated, or when the intangible asset is expressed as a measure of revenue.

Upon adoption of the amendments, there is no significant impact on the Company’s consolidated financial statements.

(iii) IFRS 11, ‘Joint Arrangement’

The Company has adopted amendments to IFRS 11, ‘Joint Arrangement’, since January 1, 2016. Amendments to IFRS 11, ‘Joint Arrangement’, require an investor to apply the principles of business combination accounting when it acquires an interest in a joint operation that constitutes a business as defined in IFRS 3, ‘Business Combinations’.

Upon adoption of the amendments, there is no significant impact on the Company’s consolidated financial statements.

(6) New standards and amendments not yet adopted

The following new standards, interpretations and amendments to existing standards are effective for annual periods beginning after January 1, 2016, and the Company has not early adopted them yet. The management is in the process of evaluating the potential impact on the consolidated financial statements upon the adoption of the new standards, interpretations and the amendments.

(i) IFRS 9, ‘Financial Instruments’

IFRS 9, ‘Financial Instruments’, is effective for annual periods beginning on or after January 1, 2018, with earlier adoption permitted. It replaces existing guidance in IAS 39, ‘Financial Instruments: Recognition and Measurement’. The Company plans to adopt IFRS 9 for the year beginning on January 1, 2018. IFRS 9 will generally be applied retrospectively; however the Company plans to take advantage of the exemption allowing it not to restate the comparative information for prior periods with respect to classification and measurement including impairment changes. New hedge accounting requirements will generally be applied prospectively except for certain exemptions including the accounting for the time value of options.

Key features of the new standard, IFRS 9, are 1) classification and measurement of financial assets that reflects the business model in which the assets are managed and their cash flow characteristics, 2) impairment methodology that reflects ‘expected credit loss’ (ECL) model for financial assets, and 3) expanded scope of hedged items and hedging instruments which qualify for hedge accounting and changes in assessment method for effect of hedging relationships.

IFRS 9 will require the Company to assess the financial impact from application of IFRS 9 and revise its accounting processes and internal controls related to financial instruments. Actual impact of adopting IFRS 9 will be dependent on the financial instruments the Company holds and economic conditions at that time as well as accounting policy elections and judgment that it will make in the future.

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The Company has not initiated any changes in internal controls processes or accounting processing systems, and has not performed an assessment of the impact resulting from the application of IFRS 9. The Company is currently performing a detailed assessment of the potential impact from the application of IFRS 9 and plans to complete the assessment in advance of its effective date. Expected impacts on the consolidated financial statements are generally categorized as follows:

1 Classification and measurement of financial assets

Under IFRS 9, financial assets are classified into three principal categories; measured at amortized cost, fair value through other comprehensive income (FVOCI) and fair value through profit or loss (FVTPL) based on the business model in which assets are managed and their cash flow characteristics. Under IFRS 9, derivatives embedded in hybrid contracts where the host is a financial asset are not bifurcated. Instead, the hybrid financial instrument as a whole is assessed for classification.

As there are additional requirements for a financial asset to be classified as measured at amortized costs or FVOCI under IFRS 9 compared to the existing guidance in IAS 39, the adoption of IFRS 9 would potentially increase the proportion of financial assets that are measured at FVTPL, increasing volatility in the Company’s profit or loss.

The criteria for classification and measurement of financial assets under IFRS 9 are as follows:

• A financial asset is measured at amortized cost if it meets both of the following conditions and is not designated as at FVTPL: 1) the asset is held within a business model whose objective is to hold assets to collect contractual cash flows; and 2) the contractual terms of the financial asset give rise on specified dates to cash flows that are solely payments of principal and interest on the principal amount outstanding.

• A financial asset is measured at FVOCI if it meets both of the following conditions and is not designated as at FVTPL: 1) the asset is held within a business model whose objective is achieved by both collecting contractual cash flows and selling financial assets; and 2) the contractual terms of the financial asset give rise on specified dates to cash flow that are solely payments of principal and interest on the principal amount outstanding.

• On initial recognition of equity investment that is not held for trading, the Company may irrevocably elect to present subsequent changes in fair value in OCI, and will not reclassify (recycle) the those items in OCI to profit or loss subsequently.

• A financial asset is measured at FVTPL if the contractual terms of the financial asset give rise to specified dates to cash flows that are not solely payments of principal and interest on the principal amount outstanding, the debt instrument is held within a business model whose objective is to sell the asset, or the equity instruments that are not elected to be designated as measured at FVOCI.

As of December 31, 2016, the Company has loans and receivables amounting to ￦16,273,877 million,available-for-sale financial assets amounting to ￦1,014,732 million, and financial assets at fair value through profit or loss amounting to ￦367,477 million.

2 Classification and measurement of financial liabilities

Under IFRS 9, the amount of change in the fair value attributable to the changes in the credit risk of the financial liabilities is presented in OCI, not recognized in profit or loss, and the OCI amount will not be reclassified (recycled) to profit or loss. However, if doing so creates or increase an accounting mismatch, the amount of change in the fair value is recognized in profit or loss.

As a portion of fair value change which was recognized in profit or loss under the existing standard, IAS 39, will be presented in OCI under IFRS 9, profit or loss related to valuation of the same financial liabilities is likely to decrease.

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The Company does not have any financial liability designated as at FVTPL as of December 31, 2016.

3 Impairment: Financial assets and contract assets

IFRS 9 replaces the ‘incurred loss’ model in the existing standard with a forward-looking ‘expected credit loss’ (ECL) model for debt instruments, lease receivables, contractual assets, loan commitments, financial guarantee contracts.

Under IFRS 9, impairment losses are likely to be recognized earlier than using the incurred loss model under the existing guidance in IAS 39 as loss allowances will be measured on either of the12-month or lifetime ECL based on the extent of increase in credit risk since inception as shown in the below table.

Classification		Loss allowances
Stage 1	Credit risk has not increased significantly since the initial recognition	12-month ECL: ECLs that resulted from possible default events within the 12 months after the reporting date
Stage 2	Credit risk has increase significantly since the initial recognition	Lifetime ECL: ECL that resulted from all possible default events over the expected life of a financial instrument
Stage 3	Credit-impaired

Under IFRS 9, financial assets of which the credit was impaired at the initial recognition, cumulative changes in lifetime ECL since the initial recognition are recognized as loss allowances.

As of December 31, 2016, the Company has debt instruments in financial assets measured at amortized cost amounting to ￦16,438,054 million (loans and receivables) and has recognized loss allowances of ￦164,177 million.

4 Hedge accounting

IFRS 9 retains the mechanics of hedge accounting (fair value hedge, cash flow hedge, hedging on net investment in a foreign operation) which was defined in the existing guidance in IFRS 9, but provides principle-based and less complex guidance in hedging which focuses on the risk management activities. More hedged items and hedging instruments would qualify for hedge accounting, more qualitative and forward-looking approach will be taken to assessing hedge effectiveness, and qualitative threshold (80~125%) is removed under IFRS 9.

Certain transactions which were not qualified for hedge accounting under the existing standard will likely quality for hedge accounting under IFRS 9, decreasing volatility in the Company’s profits or loss.

As of December 31, 2016, the Company has asset and liabilities designated as hedged items amounting to ￦413,897 million and ￦117,157 million, respectively.

When initially applying IFRS 9, the Company may choose as its accounting policy to continue to apply the hedge accounting requirements of IAS 39.

(ii) IFRS 15, ‘Revenue from Contracts with Customers’

IFRS 15, ‘Revenue from Contracts from Customers’, is effective for annual periods beginning on or after January 1, 2018, with earlier adoption permitted.

It replaces existing revenue recognition guidance, including IAS 18, ‘Revenue’, IAS 11, ‘Construction Contracts’,SIC-31, ‘Revenue-Barter transactions involving advertising services’, IFRIC 13 ‘Customer Loyalty Programs’, IFRIC 15, ‘Agreements for the construction of real estate’, and IFRIC 18, ‘Transfers of assets from customers’.

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Existing IFRS standards and interpretations including IAS 18 provide revenue recognition guidance by transaction types such as sales of goods, rendering of services, interest income, royalty income, dividend income and construction revenue; however, under the new standard, IFRS 15, the five-step approach (Step 1: Identify the contract(s) with a customer, Step 2: Identify the performance obligations in the contract, Step 3: Determine the transaction price, Step 4: Allocate the transaction price to the performance obligations in the contract, Step 5: Recognize revenue when the entity satisfied a performance obligation) is applied for all types of contracts or agreements.

The Company is currently performing a detailed assessment of the impact resulting from the application of IFRS 15 and plans to complete the assessment in advance of its effective date.

(iii) IFRS 16, ‘Leases’

IFRS 16, published in January 2016, replaces existing guidance in IAS 17, ‘Leases’. It eliminates the current dual accounting model for lessees, which distinguishes betweenon-balance sheet finance leases andoff-balance sheet operating leases. Instead, there is a single,on-balance sheet accounting model that is similar to current finance lease accounting. Lessor accounting remains similar to current practice (i.e. lessors continue to classify leases as finance and operating leases). IFRS 16 is effective for annual reporting periods beginning on or after January 1, 2019, with early adoption permitted if IFRS 15 ‘Revenue from Contracts with Customers’ has also been applied.

(iv) Amendments to IAS 12, ‘Income Taxes’

The amendments clarify that unrealized losses on fixed-rate debt instruments measured at fair value and measured at cost for tax purposes give rise to a deductible temporary difference regardless of whether the holder expects to recover the carrying amount of the debt instrument by sale or by use and that the estimate of probable future taxable profit may include the recovery of some of assets for more than their carrying amount. When the Company assesses whether there will be sufficient taxable profit, the Company should compare the deductible temporary differences with future taxable profit that excludes tax deductions resulting from the reversal of those deductible temporary differences. The amendments are effective for annual periods beginning on or after January 1, 2017.

The adoption of the amendments is not expected to have a significant impact on the Company’s consolidated financial statements.

(v) Amendments to IFRS 2, ‘Share-based Payment’

The amendments include: 1) when measuring the fair value of share-based payment, the effects of vesting andnon-vesting conditions on the measurement of cash-settled share-based payment should be consistent with the measurement of equity-settled share-based payment, 2) Share-based payment transaction in which the company settles the share-based payment arrangement net by withholding a specified portion of the equity instruments per statutory tax withholding requirements would be classified as equity-settled in its entirety, if otherwise would be classified as equity-settled without the net settlement feature, and 3) when a cash-settled share-based payment changes to an equity-settled share-based payment because of modifications of the terms and conditions, the original liability recognized is derecognized and the equity-settled share-based payment is recognized at the modification date fair value. Any difference between the carrying amount of the liability at the modification date and the amount recognized in equity at the same date would be recognized in profit and loss immediately. The amendments are effective for annual periods beginning on or after January 1, 2018.

The adoption of the amendments is not expected to have a significant impact on the Company’s consolidated financial statements.

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(vi) Amendments to IAS 7, ‘Statement of Cash Flows’

The amendments require changes in liabilities arising from financing activities to be disclosed. The amendments are effective for annual periods beginning on or after January 1, 2017.

To satisfy the new disclosure requirements, the Company intends to present a reconciliation between the opening and closing balances for liabilities with changes arising from financing activities.

(vii) IFRIC 22, ‘Foreign Currency Transactions and Advance Consideration

IFRIC 22, published on December 8, 2016, clarifies the date of the transaction for the purpose of determining the exchange rate to use on initial recognition of the related asset, expense or income, when an entity has received or paid advance consideration in a foreign currency. IFRIC 22 is effective for annual reporting periods beginning on or after January 1, 2018, with earlier adoption permitted.

The Company is currently performing a detailed assessment of the impact resulting from the application of IFRIC 22 and plans to complete the assessment in advance of its effective date.

(viii) Amendments to IAS 40, ‘Investment Property’

The amendments clarify when an entity should transfer a property asset to, or from, investment property. The amendments are effective for annual periods beginning on or after January 1, 2018, with earlier adoption permitted.

The Company is currently performing a detailed assessment of the impact resulting from the application of amendments to IAS 40 and plans to complete the assessment in advance of its effective date.

3. Significant Accounting Policies

Except as described in note 2.(5), the Company applied the following significant accounting policies consistently for all periods presented. 

(1) Basis of consolidation

The consolidated financial statements are the financial statements of a group in which the assets, liabilities, equity, income, expenses and cash flows of the parent and its subsidiaries are presented as those of a single economic entity. Subsidiaries are controlled by the Company. The Company controls an entity when it is exposed to, or has rights to, variable returns from its involvement with the entity and has the ability to affect those returns through its power over the entity.

Income and expense of a subsidiary acquired or disposed of during the year are included in the consolidated statement of comprehensive income from the effective date of acquisition and up to the effective date of disposal, as appropriate. Total comprehensive income of subsidiaries is attributed to the owners of the Company and to thenon-controlling interests even if this results in thenon-controlling interests having a deficit balance.

When necessary, adjustments are made to the financial statements of subsidiaries to bring their accounting policies into line with those of the Company.

Transactions within the Company are eliminated during the consolidation.

Changes in the Company’s ownership interests in a subsidiary that do not result in the Company losing control over the subsidiary are accounted for as equity transactions. The carrying amounts of the Company’s interests and thenon-controlling interests are adjusted to reflect the changes in their relative interests in the subsidiary. Any difference between the amount by which thenon-controlling interests are adjusted and the fair value of the consideration paid or received is recognized directly in equity and attributed to owners of the Company.

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When the Company loses control of a subsidiary, the income or loss on disposal is calculated as the difference between (i) the aggregate of the fair value of the consideration received and the fair value of any retained interest and (ii) the previous carrying amount of the assets (including goodwill), and liabilities of the subsidiary and any non-controlling interests. When assets of the subsidiary are carried at revalued amounts or fair values and the related cumulative gain or loss has been recognized in other comprehensive income and accumulated in equity, the amounts previously recognized in other comprehensive income and accumulated in equity are accounted for as if the Company had directly disposed of the relevant assets (i.e. reclassified to income or loss or transferred directly to retained earnings). The fair value of any investment retained in the former subsidiary at the date when control is lost is recognized as the fair value on initial recognition for subsequent accounting under IAS 39, ‘Financial Instruments’: Recognition and Measurement or, when applicable, the cost on initial recognition of an investment in an associate or a jointly controlled entity.

(2) Business combinations

A business combination is accounted for by applying the acquisition method, unless it is a combination involving entities or businesses under common control.

The consideration transferred in a business combination is measured at fair value, which is calculated as the sum of the acquisition-date fair values of the assets transferred by the Company, liabilities incurred by the Company to the former owners of the acquiree and the equity interests issued by the Company in exchange for control of the acquiree. Acquisition-related costs are generally recognized in income or loss as incurred.

At the acquisition date, the identifiable assets acquired and the liabilities assumed are recognized at their fair value at the acquisition date, except that:

• deferred tax assets or liabilities and liabilities or assets related to employee benefit arrangements are recognized and measured in accordance with IAS 12, ‘ Income Taxes’ and IAS 19, ‘ Employee Benefits’ respectively;

• Assets (or disposal groups) that are classified as held for sale in accordance with IFRS 5,‘Non-current Assets Held for Sale’ are measured in accordance with that standard.

Goodwill is measured as the excess of the sum of the consideration transferred, the amount of anynon-controlling interests in the acquiree, and the fair value of the acquirer’s previously held equity interest in the acquiree (if any) over the net of the acquisition-date amounts of the identifiable assets acquired and the liabilities assumed. If, after reassessment, net of the acquisition-date amounts of the identifiable assets acquired and liabilities assumed exceeds the sum of the consideration transferred, the amount of anynon-controlling interests in the acquiree and the fair value of the acquirer’s previously held interest in the acquiree (if any), the excess is recognized immediately in income or loss as a bargain purchase gain.

Non-controlling interest that is present on acquisition day and entitles the holder to a proportionate share of the entity’s net assets in an event of liquidation, may be initially measured either at fair value or at thenon-controlling interest’s proportionate share of the recognized amounts of the acquiree’s identifiable net assets. The choice of measurement can be elected on atransaction-by-transaction basis. Other types ofnon-controlling interests are measured at fair value or, when applicable, on the basis specified in other IFRSs. When the consideration transferred by the Company in a business combination includes assets or liabilities resulting from a contingent consideration arrangement, the contingent consideration is measured at its acquisition-date fair value and included as part of the consideration transferred in a business combination. Changes in the fair value of the contingent consideration that qualify as measurement period adjustments are adjusted retrospectively, with corresponding adjustments against goodwill. Measurement period adjustments are adjustments that arise from additional information obtained during the ‘measurement period’ (which cannot exceed one year from the acquisition date) about facts and circumstances that existed at the acquisition date.

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The subsequent accounting for changes in the fair value of the contingent consideration that do not qualify as measurement period adjustments depends on how the contingent consideration is classified. Contingent consideration that is classified as equity is notre-measured at subsequent reporting dates and its subsequent settlement is accounted for within equity. Contingent consideration that is classified as an asset or a liability isre-measured at subsequent reporting dates in accordance with IAS 39, ‘Financial Instruments: Recognition and Measurement’, or with IAS 37, ‘Provisions’, Contingent Liabilities and Contingent Assets, as appropriate, with the corresponding gain or loss being recognized in income or loss.

When a business combination is achieved in stages, the Company’s previously held equity interest in the acquiree isre-measured to fair value at the acquisition date (i.e. the date when the Company obtains control) and the resulting gain or loss, if any, is recognized in income or loss. Amounts arising from interests in the acquiree prior to the acquisition date that have previously been recognized in other comprehensive income are reclassified to income or loss where such treatment would be appropriate if that interest were disposed of.

If the initial accounting for a business combination is incomplete by the end of the reporting period in which the combination occurs, the Company reports provisional amounts for the items for which the accounting is incomplete. Those provisional amounts are adjusted during the measurement period (see above), or additional assets or liabilities are recognized, to reflect new information obtained about facts and circumstances that existed at the acquisition date that, if known, would have affected the amounts recognized at that date.

The assets and liabilities acquired under business combinations under common control are recognized at the carrying amounts recognized previously in the consolidated financial statements of the ultimate parent. The difference between consideration transferred and carrying amounts of net assets acquired is recognized as part of share premium.

(3) Investments in associates

An associate is an entity over which the Company has significant influence and that is neither a subsidiary nor an interest in a joint venture. Significant influence is the power to participate in the financial and operating policy decisions of the investee but does not control or joint control over those policies.

The results and assets and liabilities of associates are incorporated in these consolidated financial statements using the equity method of accounting. If the investment is classified as held for sale, in which case it is accounted for in accordance with IFRS 5‘Non-current Assets Held for Sale’, any retained portion of an investment in associates that has not been classified as held for sale shall be accounted for using the equity method until disposal of the portion that is classified as held for sale takes place. If the Company holds 20% ~ 50% of the voting power of the investee, it is presumed that the Company has significant influence.

After the disposal takes place, the Company shall account for any retained interest in associates in accordance with IAS 39 ‘Financial Instruments: Recognition and Measurement’ unless the retained interest continues to be an associates, in which case the entity uses the equity method.

Under the equity method, an investment in an associate is initially recognized in the consolidated statement of financial position at cost and adjusted thereafter to recognize the Company’s share of the income or loss and other comprehensive income of the associate. When the Company’s share of losses of an associate exceeds the Company’s interest in that associate (which includes any long-term interests that, in substance, form part of the Company’s net investment in the associate), the Company discontinues recognizing its share of further losses. Additional losses are recognized only to the extent that the Company has incurred legal or constructive obligations or made payments on behalf of the associate.

Any excess of the cost of acquisition over the Company’s share of the net fair value of the identifiable assets, liabilities and contingent liabilities of an associate recognized at the date of acquisition is recognized as goodwill, which is included within the carrying amount of the investment. Any excess of the Company’s

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share of the net fair value of the identifiable assets, liabilities and contingent liabilities over the cost of acquisition, after reassessment, is recognized immediately in income or loss. The requirements of IAS 39,’Financial Instruments: Recognition and Measurement’, are applied to determine whether it is necessary to recognize any impairment loss with respect to the Company’s investment in an associate. When necessary, the entire carrying amount of the investment (including goodwill) is tested for impairment in accordance with IAS 36 ‘Impairment of Assets’ as a single asset by comparing its recoverable amount (higher of value in use and fair value less costs to sell) with its carrying amount, any impairment loss recognized forms part of the carrying amount of the investment. Any reversal of that impairment loss is recognized in accordance with IAS 36 to the extent that the recoverable amount of the investment subsequently increases.

Upon disposal of an associate that results in the Company losing significant influence over that associate, any retained investment is measured at fair value at that date and the fair value is regarded as its fair value on initial recognition as a financial asset in accordance with IAS 39. The difference between the previous carrying amount of the associate attributable to the retained interest and its fair value is included in the determination of the gain or loss on disposal of the associate. In addition, the Company accounts for all amounts previously recognized in other comprehensive income in relation to that associate on the same basis as would be required if that associate had directly disposed of the related assets or liabilities. Therefore, if a gain or loss previously recognized in other comprehensive income by that associate would be reclassified to income or loss on the disposal of the related assets or liabilities, the Company reclassifies the gain or loss from equity to income or loss (as a reclassification adjustment) when it loses significant influence over that associate.

When the Company transacts with its associate, incomes and losses resulting from the transactions with the associate are recognized in the Company’s consolidated financial statements only to the extent of interests in the associate that are not related to the Company.

(4) Joint arrangements

A joint arrangement is an arrangement of which two or more parties have joint control. Joint control is the contractually agreed sharing of control of an arrangement, which exists only when decisions about the relevant activities require the unanimous consent of the parties sharing control. Joint arrangements are classified into two types—joint operations and joint ventures. A joint operation is a joint arrangement whereby the parties that have joint control of the arrangement (i.e. joint operators) have rights to the assets, and obligations for the liabilities, relating to the arrangement. A joint venture is a joint arrangement whereby the parties that have joint control of the arrangement (i.e. joint ventures) have rights to the net assets of the arrangement.

If the Company is a joint operator, the Company is to recognize and measure the assets and liabilities (and recognize the related revenues and expenses) in relation to its interest in the arrangement in accordance with relevant IFRSs applicable to the particular assets, liabilities, revenues and expenses. If the joint arrangement is a joint venture, the Company is to account for that investment using the equity method accounting in accordance with IAS 28, ‘Investment in Associates and Joint Ventures’ (refer to note 3.(3)), except when the Company is applicable to the IFRS 5,‘Non-current Assets Held for Sale’.

(5) Non-current assets held for sale

Non-current assets and disposal groups are classified as held for sale if their carrying amount will be recovered principally through a sale transaction rather than through continuing use. This condition is regarded as met only when the sale is highly probable and thenon-current asset (or disposal group) is available for immediate sale in its present condition. Management must be committed to the sale, which should be expected to qualify for recognition as a completed sale within one year from the date of classification.

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When the Company is committed to a sale plan involving loss of control of a subsidiary, all of the assets and liabilities of that subsidiary are classified as held for sale when the criteria described above are met, regardless of whether the Company will retain anon-controlling interest in its former subsidiary after the sale.

Non-current assets (and disposal groups) classified as held for sale are measured at the lower of their previous carrying amount and fair value less costs to sell.

(6) Goodwill

The Company measures goodwill which acquired in a business combination at the amount recognized at the date on which it obtains control of the acquiree (acquisition date) less any accumulated impairment losses. Goodwill acquired in a business combination is allocated to each CGU that is expected to benefit from the synergies arising from the business acquired.

The Company assesses at the end of each reporting period whether there is any indication that an asset may be impaired. An impairment loss is recognized if the carrying amount of an asset or a CGU exceeds its recoverable amount. Impairment losses are recognized in profit or loss.

Any impairment identified at the CGU level will first reduce the carrying value of goodwill and then be used to reduce the carrying amount of the other assets in the CGU on a pro rata basis. Except for impairment losses in respect of goodwill which are never reversed, an impairment loss is reversed if there has been a change in the estimates used to determine the recoverable amount. An impairment loss is reversed only to the extent that the asset’s carrying amount does not exceed the carrying amount that would have been determined, net of depreciation or amortization, if no impairment loss had been recognized.

(7) Revenue recognition

Revenue from the sale of goods, rendering of services or use of the Company assets is measured at the fair value of the consideration received or receivable, net of returns, trade discounts and volume rebates, which are recognized as a reduction of revenue. Revenue is recognized when the amount of revenue can be measured reliably and it is probable that the economic benefits associated with the transaction will flow to the Company.

(i) Sales of goods

The Korean government approves the utility rates charged to customers by the Company’s power transmission and distribution division. The Company’s utility rates are designed to recover the Company’s reasonable costs plus a fair investment return.

The Company recognize revenue from electricity sales revenue based on power sold (transferred to the customer) up to the reporting date. To determine the amount of power sold, the Company estimates daily power volumes of electricity for residential, commercial, general, etc. The differences between the current month’s estimated amount and actual (meter-read) amount, is adjusted for(trued-up) during the subsequent month.

(ii) Sales of other services

Revenue from services rendered is recognized in profit or loss in proportion to the stage of completion of the transaction at the reporting date. The stage of completion is assessed by reference to surveys of work performed or services performed to date as a percentage of total services to be performed or the proportion that costs incurred to date bear to the estimated total costs of the transaction or other methods that reliably measures the services performed.

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(iii) Dividend income and interest income

Dividend income is recognized in profit or loss on the date that the Company’s right to receive payment is established, which in the case of quoted securities is theex-dividend date.

Interest income is recognized as it accrues in profit or loss, using the effective interest method. Interest income is accrued on a time basis, by reference to the principal outstanding and at the effective interest rate applicable, which is the rate that exactly discounts estimated future cash receipts through the expected life of the financial asset to that asset’s net carrying amount on initial recognition.

(iv) Rental income

The Company’s policy for recognition of revenue from operating leases is described in note 3 (9) below.

(v) Deferral of revenue—Transfer of Assets from Customers

The Company recovers a substantial amount of the cost related to its electric power distribution facilities from customers through the transfer of assets, while the remaining portion is recovered through electricity sales from such customers in the future. As such, the Company believes there exists a continued service obligation to the customers in accordance with IFRIC 18, ‘Transfer of Assets from Customers’ when the Company receives an item of property, equipment, or cash for constructing or acquiring an item of property or equipment, in exchange for supplying electricity to customers. The Company defers the amounts received, which are subsequently recognized as revenue on a straight-line basis over the estimated service period which does not exceed the transferred asset’s useful life.

(8) Construction services revenue

The Company provides services related to the construction of power plants related to facilities of its customers, mostly in foreign countries.

When the outcome of a construction contract can be estimated reliably, revenue and costs are recognized based on the stage of completion of the contract activity at the end of the reporting period, measured based on the proportion of contract costs incurred for work performed to date relative to the estimated total contract costs, except where this would not be representative of the stage of completion. Variations in contract work, claims and incentive payments are included to the extent that the amount can be measured reliably and its receipt is considered probable.

When the outcome of a construction contract cannot be estimated reliably, contract revenue is recognized to the extent of contract costs incurred when it is probable the revenue will be realized. Contract costs are recognized as expenses in the period in which they are incurred. When it is probable that total contract costs will exceed total contract revenue, the expected loss is recognized as an expense immediately.

When contract costs incurred to date plus recognized income less recognized losses exceed progress billings, the surplus is presented as amounts due from customers for contract work. For contracts where progress billings exceed contract costs incurred to date plus recognized income less recognized losses, the surplus is presented as the amounts due to customers for contract work. Amounts received before the related work is performed are included in the consolidated statements of financial position, as a liability, as advance received. Amounts billed for work performed but not yet paid by the customer are included in the consolidated statements of financial position as accounts and other receivables.

(9) Leases

The Company classifies and accounts for leases as either a finance or operating lease, depending on the terms. Leases where the Company assumes substantially all of the risks and rewards of ownership are classified as finance leases. All other leases are classified as operating leases.

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(i) The Company as lessor

Amounts due from lessees under finance leases are recognized as receivables at the amount of the Company’s net investment in the leases. Finance lease income is allocated to accounting periods so as to reflect a constant periodic rate of return on the Company’s net investment outstanding in respect of the leases.

Rental income from operating leases is recognized on a straight-line basis over the term of the relevant lease. Initial direct costs incurred in negotiating and arranging an operating lease are added to the carrying amount of the leased asset and recognized on a straight-line basis over the lease term.

(ii) The Company as lessee

Leases are classified as finance leases whenever the terms of the lease transfer substantially all the risks and rewards of ownership to the lessee. All other leases are classified as operating leases.

Assets held under finance leases are initially recognized as assets of the Company at their fair value at the inception of the lease or, if lower, at the present value of the minimum lease payments. The corresponding liability to the lessor is included in the statement of financial position as a finance lease obligation.

Lease payments are apportioned between finance expenses and reduction of the lease obligation so as to achieve a constant rate of interest on the remaining balance of the liability. Finance expenses are recognized immediately in income or loss, unless they are directly attributable to qualifying assets, in which case they are capitalized in accordance with the Company’s general policy on borrowing costs. Contingent rentals are recognized as expenses in the periods in which they are incurred.

Operating lease payments are recognized as an expense on a straight-line basis over the lease term, except where another systematic basis is more representative of the time pattern in which economic benefits from the leased asset are consumed. Contingent rentals arising under operating leases are recognized as an expense in the period in which they are incurred.

In the event that lease incentives are received to enter into operating leases, such incentives are recognized as a liability. The aggregate benefit of incentives is recognized as a reduction of rental expense on a straight-line basis, except where another systematic basis is more representative of the time pattern in which economic benefits from the leased asset are consumed.

(iii) Determining whether an arrangement contains a lease

At inception of an arrangement, the Company determines whether the arrangement is or contains a lease.

At inception or on reassessment of an arrangement that contains a lease, the Company separates payments and other consideration required by the arrangement into those for the lease and those for other elements on the basis of their relative fair values. If the Company concludes for a finance lease that it is impracticable to separate the payments reliably, then an asset and a liability are recognized at an amount equal to the fair value of the underlying asset.

(10) Foreign currencies

Transactions in foreign currencies are translated to the respective functional currencies of the Company entities at exchange rates at the dates of the transactions. Monetary assets and liabilities denominated in foreign currencies are retranslated to the functional currency using the reporting date’s exchange rate.Non-monetary assets and liabilities denominated in foreign currencies that are measured at fair value are retranslated to the functional currency at the exchange rate at the date that the fair value was determined.

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Exchange differences are recognized in profit or loss in the period in which they arise except for:

• Exchange differences on foreign currency borrowings relating to assets under construction for future productive use, which are included in the cost of those assets when they are regarded as an adjustment to interest costs on those foreign currency borrowings;

• Exchange differences on transactions entered into in order to hedge certain foreign currency risks (refer to note 3.(25);

Derivative financial instruments, including hedge accounting); and

• Exchange differences on monetary items receivable from or payable to a foreign operation for which settlement is neither planned nor likely to occur (therefore forming part of the net investment in the foreign operation), which are recognized initially in other comprehensive income and reclassified from equity to income or loss on disposal or partial disposal of the net investment.

For the purpose of presenting financial statements, the assets and liabilities of the Company’s foreign operations are expressed in Korean won using exchange rates prevailing at the end of the reporting period. Income and expense items are translated at the average exchange rates for the period, unless exchange rates fluctuated significantly during that period, in which case the exchange rates at the dates of the transactions are used. Exchange differences arising, if any, are recognized in other comprehensive income and accumulated in equity.

When a foreign operation is disposed of, the relevant amount in the translation is transferred to profit or loss as part of the gain or loss on disposal.

(11) Borrowing costs

The Company capitalizes borrowing costs directly attributable to the acquisition, construction or production of a qualifying asset as part of the cost of that asset. Other borrowing costs are recognized in expense as incurred. A qualifying asset is an asset that requires a substantial period of time to get ready for its intended use or sale.

Investment income earned on the temporary investment of specific borrowings pending their expenditure on qualifying assets is deducted from the borrowing costs eligible for capitalization.

All other borrowing costs are recognized in income or loss in the period in which they are incurred.

(12) Government grants

Government grants are not recognized unless there is reasonable assurance that the Company will comply with the grant’s conditions and that the grant will be received.

Benefit from a government loan at a below-market interest rate is treated as a government grant, measured as the difference between proceeds received and the fair value of the loan based on prevailing market interest rates.

(i) If the Company received grants related to assets

Government grants whose primary condition is that the Company purchase, construct or otherwise acquire long-term assets are deducted in calculating the carrying amount of the asset. The grant is recognized in profit or loss over the life of a depreciable asset as a reduced depreciation expense.

(ii) If the Company received grants related to income

Government grants which are intended to compensate the Company for expenses incurred are recognized as other income (government grants) in profit or loss over the periods in which the Company recognizes the related costs as expenses.

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(13) Employee benefits

When an employee has rendered service to the Company during a period, the Company recognizes the contribution payable to a defined contribution plan in exchange for that service as a liability (accrued expense).

For defined benefit pension plans and other post-employment benefits, the net periodic pension expense is actuarially determined by “Pension Actuarial System” developed by independent actuaries using the projected unit credit method. The present value of the defined benefit obligation is determined by discounting the estimated future cash outflows using interest rates of high-quality corporate bonds that are denominated in the currency in which the benefits will be paid and that have terms to maturity approximating the terms of the related pension liability. However, if there is not a deep market, market yields on government bonds are used.

Net defined benefit liability’s measurement is composed of actuarial gains and losses, return on plan assets excluding net interest on net defined benefit liability, and any change in the effect of the asset ceiling, excluding net interest, which are immediately recognized in other comprehensive income. The actuarial gains or losses recognized in other comprehensive income which will not be reclassified into net profit or loss for later periods are immediately recognized in retained earnings. Past service cost will be recognized as expenses upon the earlier of the date of change or reduction to the plan, or the date of recognizing termination benefits.

The retirement benefit obligation recognized in the statement of financial position represents the present value of the defined benefit obligation as adjusted for unrecognized actuarial gains and losses and unrecognized past service cost, and as reduced by the fair value of plan assets. Any asset resulting from this calculation is limited to unrecognized actuarial losses and past service cost, plus the present value of available refunds and reductions in future contributions to the plan.

(14) Income taxes

Income tax expense comprises current and deferred tax. Current tax and deferred tax are recognized in profit or loss except to the extent that it relates to a business combination, or items recognized directly in equity or in other comprehensive income.

(i) Current tax

Current tax is the expected tax payable or receivable on the taxable profit or loss for the year, using tax rates enacted or substantively enacted at the end of the reporting period and any adjustment to tax payable in respect of previous years. The taxable profit is different from the accounting profit for the period since the taxable profit is calculated excluding the temporary differences, which will be taxable or deductible in determining taxable profit (tax loss) of future periods, andnon-taxable ornon-deductible items from the accounting profit.

(ii) Deferred tax

Deferred tax is recognized, using the asset-liability method, in respect of temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and the amounts used for taxation purposes. A deferred tax liability is recognized for all taxable temporary differences. A deferred tax asset is recognized for all deductible temporary differences to the extent that it is probable that taxable profit will be available against which they can be utilized. However, deferred tax is not recognized for the following temporary differences: taxable temporary differences arising on the initial recognition of goodwill, or the initial recognition of assets or liabilities in a transaction that is not a business combination and that affects neither accounting profit or loss nor taxable income.

The measurement of deferred tax liabilities and deferred tax assets reflects the tax consequences that would follow from the manner in which the Company expects, at the end of the reporting period, to

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recover or settle the carrying amount of its assets and liabilities. Deferred tax assets or deferred tax liabilities on investment properties measured at fair value, unless any contrary evidence exists, are measured using the assumption that the carrying amount of the property will be recovered entirely through sale.

The Company recognizes a deferred tax liability for all taxable temporary differences associated with investments in subsidiaries, associates, and interests in joint ventures, except to the extent that the Company is able to control the timing of the reversal of the temporary difference and it is probable that the temporary difference will not reverse in the foreseeable future. The Company recognizes a deferred tax asset for all deductible temporary differences arising from investments in subsidiaries and associates, to the extent that it is probable that the temporary difference will reverse in the foreseeable future and taxable profit will be available against which the temporary difference can be utilized.

The carrying amount of a deferred tax asset is reviewed at the end of each reporting period and reduces the carrying amount to the extent that it is no longer probable that sufficient taxable profit will be available to allow the benefit of part or all of that deferred tax asset to be utilized.

Deferred tax assets and liabilities are measured at the tax rates that are expected to apply to the period when the asset is realized or the liability is settled, based on tax rates (and tax laws) that have been enacted or substantively enacted by the end of the reporting period. The measurement of deferred tax liabilities and deferred tax assets reflects the tax consequences that would follow from the manner in which the Company expects, at the end of the reporting period to recover or settle the carrying amount of its assets and liabilities.

Deferred tax assets and liabilities are offset only if there is a legally enforceable right to offset the related current tax liabilities and assets, and they relate to income taxes levied by the same tax authority and they intend to settle current tax liabilities and assets on a net basis.

(iii) Current and deferred tax for the year

Current and deferred tax are recognized in income or loss, except when they relate to items that are recognized in other comprehensive income or directly in equity, in which case, the current and deferred tax are also recognized in other comprehensive income or directly in equity respectively. Where current tax or deferred tax arises from the initial accounting for a business combination, the tax effect is included in the accounting for the business combination.

(15) Property, plant and equipment

Property, plant and equipment are initially measured at cost and after initial recognition, are carried at cost less accumulated depreciation and accumulated impairment losses. The cost of property, plant and equipment includes expenditures arising directly from the construction or acquisition of the asset, any costs directly attributable to bringing the asset to the location and condition necessary for it to be capable of operating in the manner intended by management and the initial estimate of the costs of dismantling and removing the item and restoring the site on which it is located.

Subsequent costs are recognized in the carrying amount of property, plant and equipment at cost or, if appropriate, as separate items if it is probable that future economic benefits associated with the item will flow to the Company and the cost of the item can be measured reliably. The carrying amount of the replaced part is derecognized. The costs of theday-to-day servicing are recognized in profit or loss as incurred.

Property, plant and equipment, except for land, are depreciated on a straight-line basis over estimated useful lives that appropriately reflect the pattern in which the asset’s future economic benefits are expected to be consumed. For loaded nuclear fuel related to long-term raw materials and spent nuclear fuels related to asset retirement costs, the Company uses the production method to measure and recognizes as expense the economic benefits of the assets.

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The estimated useful lives of the Company’s property, plant and equipment are as follows:

	Useful lives (years)
Buildings	8 ~ 40
Structures	8 ~ 50
Machinery	2 ~ 32
Vehicles	3 ~ 8
Loaded heavy water	30
Asset retirement costs	18, 30, 40, 60
Finance lease assets	6 ~ 32
Ships	9
Others	4 ~ 15

A component that is significant compared to the total cost of property, plant and equipment is depreciated over its separate useful life.

Depreciation methods, residual values and useful lives of property, plant and equipment are reviewed at the end of each reporting period and if change is deemed appropriate, it is treated as a change in accounting estimate. As a result of such annual review, useful lives of certain machinery were changed during 2016. Depreciation expenses increased by ￦160,985 million for the year ended December 31, 2016. Depreciation expenses are expected to increase by ￦130,514 million and ￦91,197 million for the years ending December 31, 2017 and 2018, respectively, and to decrease by ￦382,696 million for the years after December 31, 2018.

Property, plant and equipment are derecognized on disposal, or when no future economic benefits are expected from its use or disposal. Gains or losses arising from derecognition of a property, plant and equipment, measured as the difference between the net disposal proceeds and the carrying amount of the asset, are recognized in income or loss when the asset is derecognized.

(16) Investment property

Property held for the purpose of earning rentals or benefiting from capital appreciation is classified as investment property. Investment property is initially measured at its cost. Transaction costs are included in the initial measurement. Subsequently, investment property is carried at depreciated cost less any accumulated impairment losses.

Subsequent costs are recognized in the carrying amount of investment property at cost or, if appropriate, as separate items if it is probable that future economic benefits associated with the item will flow to the Company and the cost of the item can be measured reliably. The carrying amount of the replaced part is derecognized. The costs of theday-to-day servicing are recognized in profit or loss as incurred.

Investment property except for land, are depreciated on a straight-line basis over 8 ~ 40 years as estimated useful lives.

The estimated useful lives, residual values and depreciation method are reviewed at the end of each reporting period, with the effect of any changes in estimate accounted for on a prospective basis.

An investment property is derecognized upon disposal or when the investment property is permanently withdrawn from use and no future economic benefits are expected from the disposal. Any gain or loss arising on derecognition of the property (calculated as the difference between the net disposal proceeds and the carrying amount of the asset) is included in income or loss in the period in which the property is derecognized.

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(17) Intangible assets

(i) Intangible assets acquired separately

Intangible assets with finite useful lives that are acquired separately are carried at cost less accumulated amortization and accumulated impairment losses. Amortization is recognized on a straight-line basis over their estimated useful lives. The estimated useful life and amortization method are reviewed at the end of each reporting period, with the effect of any changes in estimate being accounted for on a prospective basis. Intangible assets with indefinite useful lives that are acquired separately are carried at cost less accumulated impairment losses.

(ii) Research and development

Expenditure on research activities is recognized as an expense in the period in which it is incurred.

An internally-generated intangible asset arising from development (or from the development phase of an internal project) is recognized if, and only if, all of the following have been demonstrated:

• The technical feasibility of completing the intangible asset so that it will be available for use or sale;

• The intention to complete the intangible asset and use or sell it;

• The ability to use or sell the intangible asset;

• How the intangible asset will generate probable future economic benefits;

• The availability of adequate technical, financial and other resources to complete the development and to use or sell the intangible asset; and

• The ability to measure reliably the expenditure attributable to the intangible asset during its development.

The amount initially recognized for internally-generated intangible assets is the sum of the expenditure incurred from the date when the intangible asset first meets the recognition criteria listed above. When the development expenditure does not meet the criteria listed above, an internally-generated intangible asset cannot be recognized and the expenditure is recognized in income or loss in the period in which it is incurred.

Internally-generated intangible assets are reported at cost less accumulated amortization and accumulated impairment losses.

The estimated useful lives and amortization methods of the Company’s intangible assets with finite useful lives are as follows:

	Useful lives (years)	Amortization methods
Usage rights for donated assets	10 ~ 20	Straight
Software	4, 5	Straight
Industrial rights	5, 10	Straight
Development expenses	5	Straight
Leasehold rights	10	Straight
Mining right	—	Unit of production
Others	3 ~ 50 or Indefinite	Straight

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(iii) Intangible assets acquired in a business combination

Intangible assets that are acquired in a business combination are recognized separately from goodwill are initially recognized at their fair value at the acquisition date (which is regarded as their cost).

Subsequent to initial recognition, intangible assets acquired in a business combination are reported at cost less accumulated amortization and accumulated impairment losses, on the same basis as intangible assets that are acquired separately.

(iv) Derecognition of intangible assets

An intangible asset is derecognized on disposal, or when no future economic benefits are expected from its use or disposal. Gains or losses arising from derecognition of an intangible asset are measured as the difference between the net disposal proceeds and the carrying amount of the asset, and are recognized in income or loss when the asset is derecognized.

(18) Greenhouse gas emissions rights (allowances) and obligations

In connection with Enforcement of Allocation and Trading of Greenhouse Gas Emissions Allowances, the Company applies the following accounting policies for greenhouse gas emissions rights and obligations.

(i) Greenhouse gas emissions rights

Greenhouse gas emissions rights consist of the allowances received free of charge from the government and the ones purchased. The cost of the greenhouse gas emissions rights includes expenditures arising directly from the acquisition and any other costs incurred during normal course of the acquisition.

Greenhouse gas emissions rights are held by the Company to fulfill the legal obligation and recorded as intangible assets. To the extent that the portion to be submitted to the government within one year from the end of reporting period, the greenhouse gas emissions rights are classified as current assets. Greenhouse gas emissions rights recorded as intangible assets are initially measured at cost and substantially remeasured at cost less accumulated impairment losses.

Greenhouse gas emissions rights are derecognized on submission to the government or when no future economic benefits are expected from its use or disposal.

(ii) Greenhouse gas emissions obligations

Greenhouse gas emissions obligations are the Company’s present legal obligation to submit the greenhouse gas emissions allowances to the government and recognized when an outflow of resources is probable and a reliable estimate can be made of the amount of the obligation. Greenhouse gas emissions obligations are measured as the sum of the carrying amount of the allocated rights that will be submitted to the government and the best estimate of expenditure required to settle the obligation at the end of the reporting period for any excess emission.

(19) Impairment ofnon-financial assets other than goodwill

At the end of each reporting period, the Company reviews the carrying amounts of its tangible and intangible assets with definite useful lives to determine whether there is any indication that those assets have suffered an impairment loss. If any such indication exists, the recoverable amount of the asset is estimated in order to determine the extent of the impairment loss (if any). Where it is not possible to estimate the recoverable amount of an individual asset, the Company estimates the recoverable amount of the cash-generating unit to which the asset belongs. Where a reasonable and consistent basis of allocation can be identified, corporate assets are also allocated to individual cash-generating units, or otherwise they are allocated to the smallest group of cash-generating units for which a reasonable and consistent allocation basis can be identified.

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Intangible assets with indefinite useful lives and intangible assets not yet available for use are tested for impairment at least annually, and whenever there is an indication that the asset may be impaired.

Recoverable amount is the higher of fair value less costs to sell and value in use. In assessing value in use, the estimated future cash flows are discounted to their present value using apre-tax discount rate that reflects current market assessments of the time value of money and the risks specific to the asset for which the estimates of future cash flows have not been adjusted.

If the recoverable amount of an asset (or a cash-generating unit) is estimated to be less than its carrying amount, the carrying amount of the asset (or the cash-generating unit) is reduced to its recoverable amount. An impairment loss is recognized immediately in profit or loss, unless the relevant asset is carried at a revalued amount, in which case the impairment loss is treated as a revaluation decrease.

When an impairment loss subsequently reverses, the carrying amount of the asset (or a cash-generating unit) is increased to the revised estimate of its recoverable amount, to the extent the increased carrying amount does not exceed the carrying amount that would have been determined had no impairment loss been recognized for the asset (or cash-generating unit) in prior years. A reversal of an impairment loss is recognized immediately in profit or loss, unless the relevant asset is carried at a revalued amount, in which case the reversal of the impairment loss is treated as a revaluation increase.

(20) Inventories

Inventories are measured at the lower of cost and net realizable value. Cost of inventories for inventories in transit are measured by using specific identification method. Cost of inventories, except for those in transit, are measured under the weighted average method and consists of the purchase price, cost of conversion and other costs incurred in bringing the inventories to their present location and condition.

Net realizable value is the estimated selling price in the ordinary course of business, less the estimated costs of completion and selling expenses. The amount of any write-down of inventories to net realizable value and all losses of inventories are recognized as an expense in the period the write-down or loss occurs. The amount of any reversal of any write-down of inventories, arising from an increase in net realizable value, are recognized as a reduction in the amount of inventories recognized as an expense in the period in which the reversal occurs.

(21) Provisions

Provisions are recognized when the Company has a present legal or constructive obligation as a result of a past event, it is probable that an outflow of resources embodying economic benefits will be required to settle the obligation and a reliable estimate can be made of the amount of the obligation.

The risks and uncertainties that inevitably surround many events and circumstances are taken into account in reaching the best estimate of a provision. Where the effect of the time value of money is material, provisions are determined at the present value of the expected future cash flows.

Where some or all of the expenditures required to settle a provision are expected to be reimbursed by another party, the reimbursement shall be recognized when, and only when, it is virtually certain that reimbursement will be received if the entity settles the obligation. The reimbursement shall be treated as a separate asset.

Provisions are reviewed at the end of each reporting period and adjusted to reflect the current best estimates. If it is no longer probable that an outflow of resources embodying economic benefits will be required to settle the obligation, the provision is reversed.

(i) Provision for employment benefits

The Company determines the provision for employment benefits as the incentive payments based on the results of the individual performance evaluation or management assessment.

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(ii) Provision for decommissioning costs of nuclear power plants

The Company records the fair value of estimated decommissioning costs as a liability in the period in which the Company incurs a legal obligation associated with retirement of long-lived assets that result from acquisition, construction, development and/or normal use of the assets. Accretion expense consists ofperiod-to-period changes in the liability for decommissioning costs resulting from the passage of time and revisions to either the timing or the amount of the original estimate of undiscounted cash flows.

(iii) Provision for disposal of spent nuclear fuel

Under the Radioactive Waste Management Act, the Company is levied to pay the spent nuclear fuel fund for the management of spent nuclear fuel. The Company recognizes the provision of present value of the payments.

(iv) Provision for low and intermediate radioactive wastes

Under the Radioactive Waste Management Act, the Company recognizes the provision for the disposal of low and intermediate radioactive wastes in best estimate of the expenditure required to settle the present obligation.

(v) Provision for Polychlorinated Biphenyls (“PCBs”)

Under the regulation of Persistent Organic Pollutants Management Act, enacted in 2007, the Company is required to remove PCBs, a toxin, from the insulating oil of its transformers by 2025. As a result of the enactments, the Company is required to inspect the PCBs contents of transformers and dispose of PCBs in excess of safety standards under the legally settled procedures. The Company’s estimates and assumptions used to determine fair value can be affected by many factors, such as the estimated costs of inspection and disposal, inflation rate, discount rate, regulations and the general economy.

(vi) Provisions for power plant regional support program

Power plant regional support programs consist of scholarship programs to local students, local economy support programs, local culture support programs, environment development programs, and local welfare programs. The Company recognizes the provision in relation to power plant regional support program.

(vii) Provisions for transmission and transformation facilities-neighboring areas support program

The Company has present obligation to conduct transmission and transformation facilities-neighboring areas support program under Act on assistance to transmission and transformation facilities-neighboring areas. The Company recognizes the provision of estimated amount to fulfill the obligation.

(viii) Renewable Portfolio Standard (“RPS”) provisions

RPS program is required to generate a specified percentage of total electricity to be generated in the form of renewable energy and provisions are recognized for the governmental regulations to require the production of energies from renewable energy sources such as solar, wind and biomass.

(22) Non-derivative financial assets

The Company recognizes and measuresnon-derivative financial assets by the following four categories: financial assets at fair value through profit or loss,held-to-maturity investments, loans and receivables andavailable-for-sale financial assets. The Company recognizes financial assets in the statement of financial position when the Company becomes a party to the contractual provisions of the instrument. Upon initial

F-33

recognition,non-derivative financial assets are measured at their fair value plus, in the case of a financial asset not at fair value through profit or loss, transaction costs that are directly attributable to the asset’s acquisition or issuance.

A regular way purchase or sale of financial assets shall be recognized and derecognized, as applicable, using trade date accounting or settlement date accounting. A regular way purchase or sale is a purchase or sale of a financial asset under a contract whose terms require delivery of the asset within the time frame established generally by regulation or convention in the marketplace concerned.

(i) Effective interest method

The effective interest method is a method of calculating the amortized cost of a debt instrument and of allocating interest income over the relevant period. The effective interest rate is the rate that exactly discounts estimated future cash receipts (including all fees and points paid or received that form an integral part of the effective interest rate, transaction costs and other premiums or discounts) through the expected life of the debt instrument, or, where appropriate, a shorter period, to the net carrying amount on initial recognition. Income is recognized on an effective interest basis for debt instruments other than those financial assets classified as financial assets at fair value through profit or loss.

(ii) Financial assets at fair value through profit or loss (FVTPL)

A financial asset is classified as financial assets are classified at fair value through profit or loss if it is held for trading or is designated as such upon initial recognition. Upon initial recognition, transaction costs are recognized in profit or loss when incurred. A financial assets its acquired principally for the purpose of selling it in the near term are classified as a short-term financial assets held for trading and also all the derivatives including an embedded derivate that is not designated and effective as a hedging instrument are classified at the short-term trading financial asset as well. Financial assets at fair value through profit or loss are measured at fair value, and changes therein are recognized in profit or loss.

A financial asset is classified as held for trading if:

• It has been acquired principally for the purpose of selling it in the near term; or

• On initial recognition it is part of a portfolio of identified financial instruments that the Company manages together and has a recent actual pattern of short term profit taking; or

• It is derivative, including an embedded derivative that is not designated and effective as a hedging instrument.

A financial asset other than a financial asset held for trading may be designated as at financial assets at fair value through profit or loss upon initial recognition if:

• Such designation eliminates or significantly reduces a measurement or recognition inconsistency that would otherwise arise; or

• The financial asset forms part of a group of financial assets or financial liabilities or both, which is managed and its’ performance is evaluated on a fair value basis in accordance with the Company’s documented risk management or investment strategy, and information about the grouping is provided internally on that basis; or

• It forms a part of a contract containing one or more embedded derivatives, and with IAS No. 39, Financial Instruments; Recognition and Measurement permits the entire combined contract (asset or liability) to be designated as at financial assets at fair value through profit or loss.

Financial assets at fair value through profit or loss are stated at fair value, with any gains or losses arising onre-measurement recognized in income or loss. The net gain or loss recognized in income or loss incorporates any dividend or interest earned on the financial asset and is included in the ‘finance income and finance expenses’ line item in the consolidated statement of comprehensive income.

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(iii) Held-to-maturity investments

Anon-derivative financial asset with a fixed or determinable payment and fixed maturity, for which the Company has the positive intention and ability to hold to maturity, are classified asheld-to-maturity investments. Subsequent to initial recognition,held-to-maturity investments are measured at amortized cost using the effective interest method.

(iv) Available-for-sale financial assets

Available-for-sale financial assets are thosenon-derivative financial assets that are designated asavailable-for-sale or are not classified as financial assets at fair value through profit or loss,held-to-maturity investments or loans and receivables.

Gains and losses arising from changes in fair value are recognized in other comprehensive income and accumulated in the valuation reserve. However, impairment losses, interest calculated using the effective interest method, and foreign exchange gains and losses on monetary assets are recognized in income or loss. Unquoted equity investments which are not traded in an active market, whose fair value cannot be measured reliably are carried at cost.

When a financial asset is derecognized or impairment losses are recognized, the cumulative gain or loss previously recognized in other comprehensive income is reclassified from equity to profit or loss.

Dividends on anavailable-for-sale equity instrument are recognized in profit or loss when the Company’s right to receive payment is established.

The fair value ofavailable-for-sale monetary assets denominated in a foreign currency is determined in that foreign currency and translated at the spot rate at the end of the reporting period. The foreign exchange gains and losses that are recognized in income or loss are determined based on the amortized cost of the monetary asset. Other foreign exchange gains and losses are recognized in other comprehensive income.

(v) Loans and receivables

Loans and receivables are financial assets with fixed or determinable payments that are not quoted in an active market. Subsequent to initial recognition, loans and receivables are measured at amortized cost using the effective interest method except for loans and receivables of which the effect of discounting is immaterial.

(vi) Impairment of financial assets

Financial assets, other than those at financial assets at fair value through profit or loss, are assessed for indicators of impairment at the end of each reporting period. Financial assets are considered to be impaired when there is objective evidence that, as a result of one or more events that occurred after the initial recognition of the financial asset, the estimated future cash flows of the investment have been affected.

For listed and unlisted equity investments classified asavailable-for-sale financial asset, a significant or prolonged decline in the fair value of the security below its cost is considered to be objective evidence of impairment in addition to the criteria mentioned below.

For all other financial assets, objective evidence of impairment could include:

• Significant financial difficulty of the issuer or counterparty; or

• Breach of contract, such as a default or delinquency in interest or principal payments, or

• It becoming probable that the borrower will enter bankruptcy or financialre-organization; or

• The disappearance of an active market for that financial asset because of financial difficulties.

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For certain categories of financial asset, such as trade receivables, assets that are assessed not to be impaired individually are, in addition, assessed for impairment on a collective basis. Objective evidence of impairment for a portfolio of receivables could include the Company’s past experience of collecting payments, an increase in the number of delayed payments in the portfolio past the average credit period and, as well as observable changes in national or local economic conditions that correlate with default on receivables.

For financial assets recorded at amortized cost, the amount of the impairment loss recognized is the difference between the asset’s carrying amount and the present value of estimated future cash flows, discounted at the financial asset’s original effective interest rate.

For financial assets carried at cost, the amount of the impairment loss is measured as the difference between the asset’s carrying amount and the present value of the estimated future cash flows discounted at the current market rate of return for a similar financial asset. Such impairment loss will not be reversed in subsequent periods.

The carrying amount of the financial asset is reduced by the impairment loss directly for all financial assets with the exception of trade receivables, where the carrying amount is reduced through the use of an allowance account. When a trade receivable is considered uncollectible, it is written off against the allowance account. Subsequent recoveries of amounts previously written off are credited against the allowance account. Changes in the carrying amount of the allowance account are recognized in income or loss.

When anavailable-for-sale financial asset is considered to be impaired, cumulative gains or losses previously recognized in other comprehensive income are reclassified to income or loss in the period.

For financial assets measured at amortized cost, if, in a subsequent period, the amount of the impairment loss decreases and the decrease can be related objectively to an event occurring after the impairment was recognized, the previously recognized impairment loss is reversed through profit or loss to the extent that the carrying amount of the investment at the date the impairment is reversed does not exceed what the amortized cost would have been had the impairment not been recognized.

In respect ofavailable-for-sale equity securities, impairment losses previously recognized in profit or loss are not reversed through profit or loss. Any increase in fair value subsequent to an impairment loss is recognized in other comprehensive income. In respect ofavailable-for-sale debt securities, impairment losses are subsequently reversed through profit or loss if an increase in the fair value of the investment can be objectively related to an event occurring after the recognition of the impairment loss.

(vii) De-recognition of financial assets

The Company derecognizes a financial asset when the contractual rights to the cash flows from the asset expire, or it transfers the rights to receive the contractual cash flows on the financial asset in a transaction in which substantially all the risks and rewards of ownership of the financial asset are transferred. Any interest in transferred financial assets that is created or retained by the Company is recognized as a separate asset or liability. If the Company retains substantially all the risks and rewards of ownership of the transferred financial assets, the Company continues to recognize the transferred financial assets and recognizes financial liabilities for the consideration received.

Onde-recognition of a financial asset in its entirety, the difference between the asset’s carrying amount and the sum of the consideration received and receivable and the cumulative gain or loss that had been recognized in other comprehensive income and accumulated in equity is recognized in income or loss.

Onde-recognition of a financial asset other than in its entirety (e.g. when the Company retains an option to repurchase part of a transferred asset), the Company allocates the previous carrying amount of the financial asset between the part it continues to recognize under continuing involvement, and the part it no longer recognizes on the basis of the relative fair values of those parts on the date of the

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transfer. The difference between the carrying amount allocated to the part that is no longer recognized and the sum of the consideration received for the part no longer recognized and any cumulative gain or loss allocated to it that had been recognized in other comprehensive income is recognized in income or loss. A cumulative gain or loss that had been recognized in other comprehensive income is allocated between the part that continues to be recognized and the part that is no longer recognized on the basis of the relative fair values of those parts.

(23) Non-derivative financial liabilities and equity instruments issued by the Company

(i) Classification as debt or equity

Debt and equity instruments are classified as either financial liabilities or as equity in accordance with the substance of the contractual arrangement.

(ii) Equity instruments

An equity instrument is any contract that evidences a residual interest in the assets of an entity after deducting all of its liabilities. Equity instruments issued by the Company are recognized at the proceeds received, net of direct issue costs.

Repurchase of the Company’s own equity instruments is recognized and deducted directly in equity. No gain or loss is recognized in income or loss on the purchase, sale, issue or cancelation of the Company’s own equity instruments.

(iii) Financial liabilities

Financial liabilities are recognized when the Company becomes a party to the contractual provisions of the instruments. Financial liabilities are initially measured at fair value. Transaction cost that are directly attributable to the issue of financial liabilities are added to or deducted from the fair value of the financial liabilities, as appropriate, on initial recognition. Transaction cost directly attributable to acquisition of financial liabilities at fair value through profit or loss are recognized immediately in profit or loss.

Financial liabilities are classified as either financial liabilities at fair value through profit or loss or other financial liabilities.

(iv) Financial liabilities at fair value through profit or loss (FVTPL)

Financial liabilities are classified as at financial liabilities at fair value through profit or loss when the financial liability is either held for trading or it is designated as financial liabilities at fair value through profit or loss.

A financial liability is classified as held for trading if:

• It has been acquired principally for the purpose of repurchasing it in the near term; or

• On initial recognition it is part of a portfolio of identified financial instruments that the Company manages together and has a recent actual pattern of short-term profit-taking; or

• It is a derivative that is not designated and effective as a hedging instrument.

A financial liability other than a financial liability held for trading may be designated as at FVTPL upon initial recognition if:

• Such designation eliminates or significantly reduces a measurement or recognition inconsistency that would otherwise arise; or

• The financial liability forms part of a Company of financial assets or financial liabilities or both, which is managed and its performance is evaluated on a fair value basis, in accordance with the Company’s documented risk management or investment strategy, and information about the grouping is provided internally on that basis; or

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• It forms part of a contract containing one or more embedded derivatives, and IAS 39, ‘Financial Instruments: Recognition and Measurement’, permits the entire combined contract (asset or liability) to be designated as at FVTPL.

Financial liabilities at fair value through profit or loss are stated at fair value, with any gains or losses arising onre-measurement recognized in income or loss. The net gain or loss recognized in income or loss incorporates any interest paid on the financial liability and is included in ‘finance income and finance expenses’.

(v) Other financial liabilities

Other financial liabilities, including borrowings, are initially measured at fair value, net of transaction costs.

Other financial liabilities are subsequently measured at amortized cost using the effective interest method, with interest expense recognized on an effective yield basis. The effective interest method is a method of calculating the amortized cost of a financial liability and of allocating interest expense over the relevant period. The effective interest rate is the rate that exactly discounts estimated future cash payments through the expected life of the financial liability, or (where appropriate) a shorter period, to the net carrying amount on initial recognition.

(vi) Financial guarantee contract liabilities

Financial guarantee contract liabilities are initially measured at their fair values and, if not designated as at FVTPL, are subsequently measured at the higher of: (a) the amount of the obligation under the contract, as determined in accordance with IAS 37, ‘Provisions, Contingent Liabilities and Contingent Assets; or (b) the amount initially recognized less, cumulative amortization recognized in accordance with IAS 18, ‘Revenue’.

(vii) De-recognition of financial liabilities

The Company derecognizes financial liabilities when, and only when, the Company’s obligations are discharged, canceled or they expire. The difference between the carrying amount of the financial liability derecognized and the consideration paid and payable is recognized in income or loss.

(24) Service Concession Arrangements

The Company recognizes revenues from construction services and operating services related to service concession arrangements in accordance with IAS 11, ’Construction Contracts’ and IAS 18, ‘Revenue’, respectively. If the Company performs more than one service under a single contract or arrangement, consideration received or receivable is allocated by reference to the relative fair values of the services delivered, when the amounts are separately identifiable.

The Company recognizes a financial asset to the extent that it has an unconditional contractual right to receive cash or another financial asset for the construction services and an intangible asset to the extent that it receives a right (license) to charge users of the public service. Borrowing costs attributable to the arrangement are recognized as an expense in the period in which they are incurred unless the Company has a contractual right to receive an intangible asset (a right to charge users of the public service). In this case, borrowing costs attributable to the arrangement are capitalized during the construction phase of the arrangement.

(25) Derivative financial instruments, including hedge accounting

The Company enters into a variety of derivative financial instruments to manage its exposure to interest rate and foreign exchange rate risk, including foreign exchange forward contracts, interest rate swaps and cross currency swaps and others.

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Derivatives are initially recognized at fair value. Subsequent to initial recognition, derivatives are measured at fair value. The resulting gain or loss is recognized in income or loss immediately unless the derivative is designated and effective as a hedging instrument, in such case the timing of the recognition in income or loss depends on the nature of the hedge relationship.

A derivative with a positive fair value is recognized as a financial asset; a derivative with a negative fair value is recognized as a financial liability. A derivative is presented as anon-current asset or anon-current liability if the remaining maturity of the instrument is more than 12 months and it is not expected to be realized or settled within 12 months. Other derivatives are presented as current assets or current liabilities.

(i) Separable embedded derivatives

Derivatives embedded in other financial instruments or other host contracts are treated as separate derivatives when their risks and characteristics are not closely related to those of the host contracts and when the host contracts are not measured at FVTPL.

An embedded derivative is presented as anon-current asset or anon-current liability if the remaining maturity of the hybrid instrument to which the embedded derivative is part of, is more than 12 months and it is not expected to be realized or settled within 12 months. All other embedded derivatives are presented as current assets or current liabilities.

(ii) Hedge accounting

The Company designates certain hedging instruments, which include derivatives, embedded derivatives andnon-derivatives in respect of foreign currency risk, as either fair value hedges or cash flow hedges. Hedges of foreign exchange risk on firm commitments are accounted for as cash flow hedges.

At the inception of the hedge relationship, the entity documents the relationship between the hedging instrument and the hedged item, along with its risk management objectives and its strategy for undertaking various hedge transactions. Furthermore, at the inception of the hedge and on an ongoing basis, the Company documents whether the hedging instrument is highly effective in offsetting changes in fair values or cash flows of the hedged item.

(iii) Fair value hedges

Changes in the fair value of derivatives that are designated and qualify as fair value hedges are recognized in income or loss immediately, together with any changes in the fair value of the hedged asset or liability that are attributable to the hedged risk. The changes in the fair value of the hedging instrument and the change in the hedged item attributable to the hedged risk relating to the hedged items are recognized in the consolidated statements of comprehensive income.

Hedge accounting is discontinued when the Company revokes the hedging relationship, when the hedging instrument expires or is sold, terminated, or exercised, or when it no longer qualifies for hedge accounting. The fair value adjustment to the carrying amount of the hedged item arising from the hedged risk is amortized as income or loss as of that date.

(iv) Cash flow hedges

The effective portion of changes in the fair value of derivatives that are designated and qualify as cash flow hedges is recognized in other comprehensive income. The gain or loss relating to the ineffective portion is recognized immediately in income or loss, and is included in the ‘finance income and expense’.

Amounts previously recognized in other comprehensive income and accumulated in equity are reclassified to income or loss in the periods when the hedged item is recognized in income or loss, in the same line of the consolidated statement of comprehensive income as the recognized hedged item. However, when the forecast transaction that is hedged results in the recognition of anon-financial asset

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or anon-financial liability, the gains and losses previously accumulated in equity are transferred from equity and included in the initial measurement of the cost of thenon-financial asset ornon-financial liability.

Hedge accounting is discontinued when the Company revokes the hedging relationship, when the hedging instrument expires or is sold, terminated, or exercised, or it no longer qualifies for hedge accounting. Any gain or loss accumulated in equity at that time remains in equity and is recognized when the forecast transaction is ultimately recognized in income or loss. When a forecast transaction is no longer expected to occur, the gain or loss accumulated in equity is recognized immediately in income or loss.

4. Segment, Geographic and Other Information

(1) Segment determination and explanation of the measurements

The Company’s operating segments are its business components that generate discrete financial information that is reported to and regularly reviewed by the Company’s the chief operating decision maker, the Chief Executive Officer, for the purpose of resource allocation and assessment of segment performance. The Company’s reportable segments are ‘Transmission and distribution’, ‘Electric power generation (Nuclear)’, ‘Electric power generation(Non-nuclear)’, ‘Plant maintenance & engineering service’ and ‘Others’; others mainly represent the business unit that manages the Company’s foreign operations.

Segment operating profit (loss) is determined the same way that consolidated operating profit is determined under IFRS without any adjustment for corporate allocations. The accounting policies used by each segment are consistent with the accounting policies used in the preparation of the consolidated financial statements. Segment assets and liabilities are determined based on separate financial statements of the entities instead of on a consolidated basis. There are various transactions between the reportable segments, including sales of property, plant and equipment and so on, that are conducted on an arms-length basis at market prices that would be applicable to an independent third-party. For subsidiaries which are in a different segment from that of its immediate parent company, their carrying amount in separate financial statements is eliminated in the consolidating adjustments in the tables below. In addition, consolidation adjustments in the table below include adjustments of the amount of investment in associates and joint ventures from the cost basis amount reflected in segment assets to that determined using equity method in the consolidated financial statements.

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(2) Financial information of the segments for the years ended December 31, 2014, 2015 and 2016, respectively, are as follows:

		2014
Segment		Total segment revenue		Intersegment revenue			Revenue from external customers		Depreciation and amortization			Interest income			Interest expense			Profit related to associates and joint ventures		Employee benefit expense			Loss on abandonment of property, plant, and equipment		Increase in provisions, net				Operating profit (loss)
		In millions of won
Transmission and distribution	￦		56,982,583		1,445,914			55,536,669		2,717,040			28,798			1,394,131			231,502		8,408			309,442		290,444				2,050,726
Electric power generation (Nuclear)			9,379,564		9,364,451			15,113		2,905,115			21,995			582,353			1,227		42,667			—		719,794				2,544,378
Electric power generation(Non-nuclear)			25,067,653		24,680,221			387,432		2,189,202			30,528			308,731			40,260		38,417			—		147,892				1,385,687
Plant maintenance & engineering service			2,620,713		1,887,954			732,759		70,374			16,033			223			1,995		39,983			—		139,965				335,076
Others			537,578		86,525			451,053		26,983			109,427			79,175			—		1,026			9		33				95,803
Consolidation adjustments			(37,465,065)		(37,465,065	)		—		(35,255	)		(15,325	)		(12,989	)		—		(9,095	)		—		(2,978	)			(202,600	)
	￦		57,123,026		—			57,123,026		7,873,459			191,456			2,351,624			274,984		121,406			309,451		1,295,150				6,209,070
Finance income																														885,290
Finance expense																														(3,140,038	)
Profit related to associates and joint ventures																														274,984
Profit before income tax																												￦		4,229,306

		2015
Segment		Total segment revenue			Intersegment revenue			Revenue from external customers		Depreciation and amortization			Interest income			Interest expense			Profit (loss) related to associates and joint ventures			Employee benefit expense			Loss on abandonment of property, plant, and equipment		Increase in provisions, net			Operating profit (loss)
		In millions of won
Transmission and distribution	￦		58,164,394			1,230,975			56,933,419		2,859,037			132,809			1,092,594			220,406			135,261			359,521		872,096			13,319,310
Electric power generation (Nuclear)			10,642,352			10,596,189			46,163		3,070,828			24,612			532,490			(595	)		54,572			—		401,839			3,806,617
Electric power generation(Non-nuclear)			21,469,345			20,906,081			563,264		2,337,353			22,171			319,647			(10,686	)		74,007			5,305		148,053			2,704,260
Plant maintenance & engineering service			2,533,887			2,016,699			517,188		85,662			12,293			542			(1,746	)		74,542			—		174,912			332,531
Others			672,250			150,557			521,693		27,491			108,104			127,684			—			343			230		34			80,165
Consolidation adjustments			(34,900,501	)		(34,900,501	)		—		(38,987	)		(58,404	)		(57,273	)		—			(24,033	)		—		5,790			37,993
	￦		58,581,727			—			58,581,727		8,341,384			241,585			2,015,684			207,379			314,692			365,056		1,602,724			20,280,876
Finance income																															1,182,988
Finance expense																															(3,015,457	)
Profit related to associates and joint ventures																															207,379
Profit before income tax																													￦		18,655,786

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		2016
Segment		Total segment revenue			Intersegment revenue			Revenue from external customers		Depreciation and amortization			Interest income			Interest expense			Profit (loss) related to associates and joint ventures			Employee benefit expense			Loss on abandonment of property, plant, and equipment		Increase in provisions, net			Operating profit (loss)
		In millions of won
Transmission and distribution	￦		59,862,284			1,890,489			57,971,795		3,226,700			80,882			844,200			(128,402	)		162,326			424,356		711,430			5,274,308
Electric power generation (Nuclear)			11,168,579			11,129,385			39,194		3,130,820			33,111			474,590			(1,082	)		70,582			—		576,223			3,770,165
Electric power generation(Non-nuclear)			21,394,223			20,561,044			833,179		2,523,306			24,171			359,607			(8,342	)		79,846			2,133		276,619			3,211,684
Plant maintenance & engineering service			2,618,388			2,190,207			428,181		98,843			10,672			2,156			478			86,268			—		221,301			210,680
Others			567,836			77,098			490,738		26,817			115,928			97,926			—			1,050			30		168			76,336
Consolidation adjustments			(35,848,223	)		(35,848,223	)		—		(45,498	)		(22,986	)		(25,611	)		—			(26,319	)		—		(3,009	)		(246,813	)
	￦		59,763,087			—			59,763,087		8,960,988			241,778			1,752,868			(137,348	)		373,753			426,519		1,782,732			12,296,360
Finance income																															791,543
Finance expense																															(2,437,087	)
Loss related to associates and joint ventures																															(137,348	)
Profit before income tax																														￦	10,513,468

F-42

(3) Information related to segment assets and segment liabilities as of and for the years ended December 31, 2015 and 2016 are as follows:

		2015
Segment		Segment assets			Investments in associates and joint ventures		Acquisition of non-current assets		Segment liabilities
		In millions of won
Transmission and distribution	￦		106,306,250			4,338,888		5,885,919		53,125,589
Electric power generation (Nuclear)			51,043,890			16,385		2,647,304		27,386,113
Electric power generation(Non-nuclear)			44,453,545			1,283,432		5,063,195		25,587,071
Plant maintenance & engineering service			2,990,862			54,825		249,627		1,172,351
Others			5,962,546			—		144,846		2,312,658
Segment totals			210,757,093			5,693,530		13,990,891		109,583,782
Consolidation adjustments:
Elimination of inter-segment amounts			(36,505,833	)		—		146,942		1,339,753
Equity method adjustment			1,050,574			—		—		—
Deferred taxes			—			—		—		(3,603,808	)
Others			(44,475	)		—		—		(4,843	)
			(35,499,734	)		—		146,942		(2,268,898	)
Consolidated totals	￦		175,257,359			5,693,530		14,137,833		107,314,884

		2016
Segment		Segment assets			Investments in associates and joint ventures		Acquisition of non-current assets			Segment liabilities
		In millions of won
Transmission and distribution	￦		105,321,129			4,121,462		6,345,004			49,854,420
Electric power generation (Nuclear)			52,782,915			15,384		1,945,610			27,366,938
Electric power generation(Non-nuclear)			47,427,642			1,320,203		3,508,313			26,205,049
Plant maintenance & engineering service			3,106,909			53,399		180,715			1,218,047
Others			7,423,132			—		365,470			2,761,262
Segment totals			216,061,727			5,510,448		12,345,112			107,405,716
Consolidation adjustments:
Elimination of inter-segment amounts			(39,114,371	)		—		(191,901	)		(5,811,800	)
Equity method adjustment			906,239			—		—			—
Deferred taxes			(5,830	)		—		—			4,301,404
Others			(10,723	)		—		—			(1,108,823	)
			(38,224,685	)		—		(191,901	)		(2,619,219	)
Consolidated totals	￦		177,837,042			5,510,448		12,153,211			104,786,497

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(4) Geographic information

The following information on revenue from external customers andnon-current assets is determined by the location of the customers and of the assets:

Geographical unit		Revenue from external customers						Non-current assets(*2)
		2014		2015		2016		2014		2015		2016
		In millions of won
Domestic	￦		53,893,877		54,351,076		55,310,011		136,053,940		143,788,043		148,297,677
Overseas(*1)			3,229,149		4,230,651		4,453,076		6,542,282		4,526,395		4,474,699
	￦		57,123,026		58,581,727		59,763,087		142,596,222		148,314,438	��	152,772,376

(*1) Middle East and other Asian countries make up the majority of overseas revenue andnon-current assets.

(*2) Amount excludes financial assets and deferred tax assets.

(5) Information on significant customers

There is no individual customer comprising more than 10% of the Company’s revenue for the years ended December 31, 2014, 2015 and 2016.

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5. Classification of Financial Instruments

(1) Classification of financial assets as of December 31, 2015 and 2016 are as follows:

		2015
		Financial assets at fair value through profit or loss		Loans and receivables		Available-for-sale financial assets		Held-to-maturity investments		Derivative assets (using hedge accounting)		Total
		In millions of won
Current assets
Cash and cash equivalents	￦		—		3,783,065		—		—		—		3,783,065
Current financial assets
Held-to-maturity investments			—		—		—		381		—		381
Derivative assets			1,498		—		—		—		95,759		97,257
Other financial assets			—		5,237,983		—		—		—		5,237,983
Trade and other receivables			—		7,473,548		—		—		—		7,473,548
			1,498		16,494,596		—		381		95,759		16,592,234
Non-current assets
Non-current financial assets
Available-for-sale financial assets			—		—		584,479		—		—		584,479
Held-to-maturity investments			—		—		—		3,242		—		3,242
Derivative assets			253,510		—		—		—		266,383		519,893
Other financial assets			—		1,387,940		—		—		—		1,387,940
Trade and other receivables			—		1,798,419		—		—		—		1,798,419
			253,510		3,186,359		584,479		3,242		266,383		4,293,973
	￦		255,008		19,680,955		584,479		3,623		362,142		20,886,207

		2016
		Financial assets at fair value through profit or loss		Loans and receivables		Available-for-sale financial assets		Held-to-maturity investments		Derivative assets (using hedge accounting)		Total
		In millions of won
Current assets
Cash and cash equivalents	￦		—		3,051,353		—		—		—		3,051,353
Current financial assets
Held-to-maturity investments			—		—		—		114		—		114
Derivative assets			79,709		—		—		—		113,574		193,283
Other financial assets			—		2,478,592		—		—		—		2,478,592
Trade and other receivables			—		7,788,876		—		—		—		7,788,876
			79,709		13,318,821		—		114		113,574		13,512,218
Non-current assets
Non-current financial assets
Available-for-sale financial assets			—		—		1,014,732		—		—		1,014,732
Held-to-maturity investments			—		—		—		3,130		—		3,130
Derivative assets			287,768		—		—		—		300,323		588,091
Other financial assets			—		1,051,541		—		—		—		1,051,541
Trade and other receivables			—		1,903,515		—		—		—		1,903,515
			287,768		2,955,056		1,014,732		3,130		300,323		4,561,009
	￦		367,477		16,273,877		1,014,732		3,244		413,897		18,073,227

F-45

(2) Classification of financial liabilities as of December 31, 2015 and 2016 are as follows:

		2015
		Financial liabilities at fair value through profit or loss		Financial liabilities recognized at amortized cost		Derivative liabilities (using hedge accounting)		Total
		In millions of won
Current liabilities
Borrowings	￦		—		1,144,027		—		1,144,027
Debt securities			—		6,702,926		—		6,702,926
Derivative liabilities			9,487		—		758		10,245
Trade and other payables			—		4,735,697		—		4,735,697
			9,487		12,582,650		758		12,592,895
Non-current liabilities
Borrowings			—		1,932,259		—		1,932,259
Debt securities			—		48,974,287		—		48,974,287
Derivative liabilities			39,524		—		116,741		156,265
Trade and other payables			—		3,718,435		—		3,718,435
			39,524		54,624,981		116,741		54,781,246
	￦		49,011		67,207,631		117,499		67,374,141

		2016
		Financial liabilities at fair value through profit or loss		Financial liabilities recognized at amortized cost		Derivative liabilities (using hedge accounting)		Total
		In millions of won
Current liabilities
Borrowings	￦		—		1,115,521		—		1,115,521
Debt securities			—		7,823,557		—		7,823,557
Derivative liabilities			3,251		—		—		3,251
Trade and other payables			—		5,585,411		—		5,585,411
			3,251		14,524,489				14,527,740
Non-current liabilities
Borrowings			—		1,773,891		—		1,773,891
Debt securities			—		42,926,236		—		42,926,236
Derivative liabilities			18,278		—		117,157		135,435
Trade and other payables			—		3,558,175		—		3,558,175
			18,278		48,258,302		117,157		48,393,737
	￦		21,529		62,782,791		117,157		62,921,477

F-46

(3) Classification of comprehensive income (loss) from financial instruments for the years ended December 31, 2014, 2015 and 2016 are as follows:

			2014			2015			2016
			In millions of won
Cash and cash equivalents	Interest income	￦		56,384			54,687			61,380
Available-for-sale financial assets	Dividends income			14,193			14,069			9,446
	Impairment loss onavailable-for-sale financial assets			(79,618	)		(84,370	)		(86,703	)
	Gain (loss) on disposal ofavailable-for-sale financial assets			95,365			(3,004	)		1,473
	Interest income			382			29			—
Held-to-maturity investments	Interest income			89			99			97
Loans and receivables	Interest income			29,507			28,586			25,106
Trade and other receivables	Interest income			99,680			100,771			102,237
Short-term financial instruments	Interest income			5,199			46,921			45,763
Long-term financial instruments	Interest income			215			10,492			7,195
Financial assets at fair value through profit or loss	Gain on valuation of derivatives			59,164			220,285			113,671
	Gain (loss) on transaction of derivatives			(24,746	)		8,605			(8,039	)
Derivative assets (using hedge accounting)	Gain on valuation of derivatives (profit or loss)			88,809			244,020			145,458
	Gain (loss) on valuation of derivatives (equity, before tax)(*)			(60,284	)		(12,572	)		50,047
	Gain (loss) on transaction of derivatives			818			2,818			(13,994	)
Financial liabilities carried at amortized cost	Interest expense of borrowings and debt securities			(1,664,682	)		(1,392,477	)		(1,202,065	)
	Loss on retirement of financial liabilities			(199	)		(33	)		(23,000	)
	Interest expense of trade and other payables			(98,407	)		(84,527	)		(68,375	)
	Interest expense of others			(588,535	)		(538,680	)		(482,428	)
	Loss on foreign currency transactions and translations			(271,953	)		(708,178	)		(290,485	)
Financial liabilities at fair value through profit or loss	Gain on valuation of derivatives			10,494			35,312			23,225
	Gain (loss) on transaction of derivatives			(38,909	)		107,454			17,045
Derivative liabilities (using hedge accounting)	Gain on valuation of derivatives (profit or loss)			51,788			93,914			5,714
	Gain (loss) on valuation of derivatives (equity, before tax)(*)			(76,013	)		9,728			(3,297	)
	Loss on transaction of derivatives			(4,180	)		(4,288	)		(51,450	)

(*) Items are included in other comprehensive income or loss. All other income and gain amounts listed above are included in finance income, and all expense and losses listed above are included in finance expenses in the consolidated statements of comprehensive income or loss.

F-47

6. Restricted Deposits

Restricted deposits as of December 31, 2015 and 2016 are as follows:

			2015		2016
			In millions of won
Cash and cash equivalents	Escrow accounts	￦		4,828		91
	Deposits for government project			5,839		16,457
	Collateral provided for borrowings			6,839		80,327
	Collateral provided for lawsuit			641		241
	Deposits for transmission regional support program			204		2,137
	Pledge			740		—
Non-currentavailable-for-sale financial asset	Decommissioning costs of nuclear power plants			—		437,015
Short-term financial instruments	Bidding guarantees			—		118
	Restriction on withdrawal related to‘win-win growth program’ for small and medium enterprises			18,000		33,000
Other current receivables	Deposit for lawsuit			—		16,000
Long-term financial instruments	Guarantee deposits for checking account			2		2
	Guarantee deposits for banking accounts at oversea branches			333		342
	Decommissioning costs of nuclear power plants			652,700		214,121
	Collateral provided for borrowings			20		—
	Funds for developing small and medium enterprises(*1)			100,000		200,000
		￦		790,146		999,851

(*1) Deposits for small and medium enterprise at IBK for construction of Bitgaram Energy Valley and support for the high potential businesses as of December 31, 2016.

7. Cash and Cash Equivalents

Cash and cash equivalents as of December 31, 2015 and 2016 are as follows:

		2015		2016
		In millions of won
Cash	￦		109		119
Other demand deposits			1,309,396		1,725,785
Short-term deposits classified as cash equivalents			374,575		120,594
Short-term investments classified as cash equivalents			2,098,985		1,204,855
	￦		3,783,065		3,051,353

F-48

8. Trade and Other Receivables

(1) Trade and other receivables as of December 31, 2015 and 2016 are as follows:

		2015
		Gross amount		Allowance for doubtful accounts			Present value discount			Book value
		In millions of won
Current assets
Trade receivables	￦		6,862,762		(51,956	)		(14	)		6,810,792
Other receivables			718,717		(52,778	)		(3,183	)		662,756
			7,581,479		(104,734	)		(3,197	)		7,473,548
Non-current assets
Trade receivables			447,010		—			—			447,010
Other receivables			1,396,107		(38,968	)		(5,730	)		1,351,409
			1,843,117		(38,968	)		(5,730	)		1,798,419
	￦		9,424,596		(143,702	)		(8,927	)		9,271,967

		2016
		Gross amount		Allowance for doubtful accounts			Present value discount			Book value
		In millions of won
Current assets
Trade receivables	￦		7,260,227		(71,985	)		—			7,188,242
Other receivables			652,782		(50,071	)		(2,077	)		600,634
			7,913,009		(122,056	)		(2,077	)		7,788,876
Non-current assets
Trade receivables			491,509		—			—			491,509
Other receivables			1,455,860		(37,590	)		(6,264	)		1,412,006
			1,947,369		(37,590	)		(6,264	)		1,903,515
	￦		9,860,378		(159,646	)		(8,341	)		9,692,391

F-49

(2) Other receivables as of December 31, 2015 and 2016 are as follows:

		2015
		Gross amount		Allowance for doubtful accounts			Present value discount			Book value
		In millions of won
Current assets
Non-trade receivables	￦		330,669		(52,778	)		—			277,891
Accrued income			88,256		—			—			88,256
Deposits			235,745		—			(3,183	)		232,562
Finance lease receivables			12,098		—			—			12,098
Others			51,949		—			—			51,949
			718,717		(52,778	)		(3,183	)		662,756
Non-current assets
Non-trade receivables			93,782		(31,829	)		—			61,953
Accrued income			582		—			—			582
Deposits			256,745		—			(5,730	)		251,015
Finance lease receivables			941,710		—			—			941,710
Others			103,288		(7,139	)		—			96,149
			1,396,107		(38,968	)		(5,730	)		1,351,409
	￦		2,114,824		(91,746	)		(8,913	)		2,014,165

		2016
		Gross amount		Allowance for doubtful accounts			Present value discount			Book value
		In millions of won
Current assets
Non-trade receivables	￦		360,021		(50,071	)		—			309,950
Accrued income			62,063		—			—			62,063
Deposits			193,720		—			(2,077	)		191,643
Finance lease receivables			12,225		—			—			12,225
Others			24,753		—			—			24,753
			652,782		(50,071	)		(2,077	)		600,634
Non-current assets
Non-trade receivables			80,393		(26,942	)		—			53,451
Accrued income			174		—			—			174
Deposits			320,935		—			(6,264	)		314,671
Finance lease receivables			960,649		—			—			960,649
Others			93,709		(10,648	)		—			83,061
			1,455,860		(37,590	)		(6,264	)		1,412,006
	￦		2,108,642		(87,661	)		(8,913	)		2,012,640

(3) Trade and other receivables are classified as loans and receivables, and are measured using the effective interest method. No interest is accrued for trade receivables related to electricity for the duration between the billing date and the payment due dates. But once trade receivables are overdue, the Company imposes a monthly interest rate of 1.5% on the overdue trade receivables. The Company holds deposits of three months’ expected electricity usage for customers requesting temporary usage and customers with past defaulted payments.

F-50

(4) Aging analysis of trade receivables as of December 31, 2015 and 2016 are as follows:

		2015			2016
		In millions of won
Trade receivables: (not overdue, not impaired)	￦		7,198,403			7,592,363
Trade receivables: (overdue, not impaired)			891			820
Less than 60 days			891			820
Trade receivables: (impairment reviewed)			110,478			158,553
60 ~ 90 days			31,973			44,277
90 ~ 120 days			11,010			18,917
120 days ~ 1 year			35,097			42,534
Over 1 year			32,398			52,825
			7,309,772			7,751,736
Less: allowance for doubtful accounts			(51,956	)		(71,985	)
Less: present value discount			(14	)		—
	￦		7,257,802			7,679,751

The Company assesses at the end of each reporting period whether there is any objective evidence that trade receivables are impaired, and provides allowances for doubtful accounts which includes impairment for trade receivables that are individually significant. The Company considers receivables as overdue if the receivables are outstanding 60 days after the maturity and sets an allowance based on past experience of collection.

(5) Aging analysis of other receivables as of December 31, 2015 and 2016 are as follows:

		2015			2016
		In millions of won
Other receivables: (not overdue, not impaired)	￦		1,918,132			1,887,620
Other receivables: (overdue, not impaired)			20,249			46,887
Less than 60 days			20,249			46,887
Other receivables: (impairment reviewed)			176,443			174,135
60 ~ 90 days			2,409			7,352
90 ~ 120 days			10,097			2,160
120 days ~ 1 year			21,433			17,613
Over 1 year			142,504			147,010
			2,114,824			2,108,642
Less: allowance for doubtful accounts			(91,746	)		(87,661	)
Less: present value discount			(8,913	)		(8,341	)
	￦		2,014,165			2,012,640

F-51

(6) Changes in the allowance for doubtful accounts for the years ended December 31, 2014, 2015 and 2016 are as follows:

		2014						2015						2016
		Trade receivables			Other receivables			Trade receivables			Other receivables			Trade receivables			Other receivables
		In millions of won
Beginning balance	￦		65,024			69,887			80,644			67,932			51,956			91,746
Bad debt expense			39,018			15,981			1,308			18,473			38,719			233
Write-off			(23,398	)		(7,534	)		(28,978	)		(888	)		(18,939	)		(928	)
Reversal			—			(241	)		(1,018	)		(413	)		—			(5,489	)
Others			—			(10,161	)		—			6,642			249			2,099
Ending balance	￦		80,644			67,932			51,956			91,746			71,985			87,661

9. Available-for-sale Financial Assets

(1) Changes inavailable-for-sale financial assets for the years ended December 31, 2015 and 2016 are as follows:

		2015
		Beginning balance		Acquisition		Disposal			Valuation			Impairment			Others			Ending Balance
	In millions of won
Listed:
Korea District Heating Corp.	￦		127,241		—		—			3,169			—			—			130,410
Kwanglim Co., Ltd.			128		—		—			134			—			—			262
Ssangyong Motor Co., Ltd.			357		—		—			(58	)		—			—			299
Sungjee Construction. Co., Ltd.			5		—		—			—			—			—			5
Korea Line Corp.			—		—		—			—			—			—			—
Namkwang Engineering & Construction Co., Ltd.			2		—		—			(3	)		—			2			1
Pumyang Construction Co., Ltd.			—		—		—			—			—			—			—
ELCOMTEC Co., Ltd.			48		—		—			5			—			—			53
PAN ocean Co., Ltd.			5		—		—			1			—			—			6
Borneo International Furniture Co., Ltd.			4		—		—			7			—			92			103
TONGYANG Inc.			66		—		—			140			—			11			217
TONGYANG networks Inc.			3		—		—			3			—			—			6
Nexolon Co., Ltd.			—		—		—			59			—			3,137			3,196
PT Adaro Energy Tbk			44,109		—		—			(23,097	)		(23,206	)		23,206			21,012
Energy Fuels Inc.			11,568		—		—			(4,866	)		(9,391	)		8,615			5,926
Baralaba Coal Company Limited (formerly, Cockatoo Coal Limited)			628		—		—			(572	)		(572	)		558			42
Denison Mines Corp.			62,339		—		—			(22,187	)		(20,154	)		14,459			34,457
Fission 3.0(*1)			61		—		(57	)		11			—			15			30
Fission Uranium Corp.			651		—		—			(28	)		—			(69	)		554
			247,215		—		(57	)		(47,282	)		(53,323	)		50,026			196,579
Unlisted:
K&C—Gyeongnam youth job creation Investment Fund(*1)			1,340		—		(133	)		—			—			—			1,207
Hanwha Electric Power Venture Fund(*1)			1,804		—		(1,804	)		—			—			—			—
Korea Investment—Korea EXIM Bank CERs Private Special Asset Investment Trust I(*1)			4,752		—		(3,000	)		—			(1,181	)		—			571

F-52

		2015
		Beginning balance		Acquisition		Disposal			Valuation		Impairment			Others		Ending Balance
	In millions of won
Troika Overseas Resource Development Private Equity Firm	￦		13,340		—		—			—		(11,787	)		—		1,553
IBK-AUCTUS Green Growth Private Equity firm(*1)			2,325		—		(1,470	)		—		—			—		855
Global Dynasty Overseas Resource Development Private Equity Firm			2,233		—		—			—		—			—		2,233
Intellectual Discovery, Ltd.			5,000		—		—			—		(3,625	)		—		1,375
Hanwha-KOSEP New Renewable Energy Private Special Assets Investment Trust 1(*1)			498		802		(231	)		—		—			—		1,069
Construction Guarantee			795		—		—			10		—			—		805
Plant & Mechanical Contractors Financial Cooperative of Korea			36		—		—			—		—			—		36
Fire Guarantee			20		—		—			—		—			—		20
Korea Software Financial Cooperative			301		—		—			—		—			—		301
Engineering Financial Cooperative			60		—		—			—		—			—		60
Electric Contractors Financial Cooperative			152		—		—			—		—			—		152
Korea Specialty Contractor Financial Cooperative			417		—		—			—		—			—		417
Information & Communication Financial Cooperative			10		—		—			—		—			—		10
Korea Electric Engineers Association			40		—		—			—		—			—		40
Hwan Young Steel Co., Ltd.			97		—		—			—		—			—		97
Woobang ENC Co., Ltd			22		—		—			—		—			—		22
Dongnam Co., Ltd.			72		—		—			—		—			—		72
SAMBO AUTO. Co., Ltd.			38		—		—			—		—			—		38
Mobo Co., Ltd.			14		—		—			—		—			—		14
Poonglim Industrial Co., Ltd.			78		—		—			—		—			15		93
HANKOOK Silicon Co., Ltd.			7,513		—		—			—		—			—		7,513
Kun Young Engineering & Construction Co., Ltd.			5		—		—			—		—			—		5
Pumyang Asset Management Co., Ltd.			3		—		—			—		—			—		3
Dae Kwang Semiconductor Co., Ltd.			6		—		—			—		—			—		6
Sanbon Department Store			124		—		—			—		(121	)		—		3
Woori Ascon Co., Ltd.			10		—		—			—		—			—		10
Miju Steel Mfg. Co., Ltd.			51		—		—			—		—			—		51
BnB Sungwon Co., Ltd.			15		—		—			—		—			—		15
Hana Civil Engineering Co., Ltd.			1		—		—			—		—			—		1
KC Development Co., Ltd.			6		—		—			—		—			—		6
IMHWA Corp.			5		—		—			—		—			—		5
IXELON Co., Ltd.			23		—		—			—		(23	)		—		—
DAIM Special Vehicle Co., Ltd.			10		—		—			—		—			—		10
ASA KIMJE Co., Ltd.			465		—		—			—		(465	)		—		—
ASA JEONJU Co., Ltd.			697		—		—			—		(628	)		—		69
KYUNGWON Co., Ltd.			14		—		—			—		—			—		14
Moonkyung Silica Co., Ltd.			—		—		—			—		—			—		—
Yousung Remicon Co., Ltd.			4		—		—			—		—			—		4
Sungkwang Timber Co., Ltd.			4		—		—			—		—			—		4
Yongbo Co., Ltd.			3		—		—			—		—			—		3
HJ Steel Co., Ltd.			—		—		—			—		—			2		2
Ildong Air Conditioning Co., Ltd.			—		—		—			—		(2	)		2		—

F-53

		2015
		Beginning balance		Acquisition		Disposal		Valuation		Impairment			Others		Ending Balance
	In millions of won
KS Remicon Co., Ltd.	￦		—		—		—		—		—			3		3
Sewoong Heavy Industries Co., Ltd.			—		—		—		—		—			40		40
SIN-E Steel Co., Ltd.			—		—		—		—		—			33		33
Joongang Platec Co., Ltd.			—		—		—		—		—			72		72
Hangjin Steel Co., Ltd.			—		—		—		—		(116	)		116		—
Pyungsan SI Ltd.			—		—		—		—		—			9		9
Samgong Development Co., Ltd.			—		—		—		—		—			7		7
Joongang Development Co., Ltd.			—		—		—		—		—			8		8
AJS Co., Ltd.			—		—		—		—		—			32		32
SHIN-E B&P Co., Ltd.			—		—		—		—		—			10		10
MSE Co., Ltd.			—		—		—		—		—			9		9
Ilrim Nano Tec Co., Ltd.			—		—		—		—		—			15		15
Kwang Myeong Electronics Technology Co., Ltd.			—		—		—		—		—			11		11
YoungjinHi-Tech Co., Ltd.			—		—		—		—		(105	)		126		21
Dong Woo International Co., Ltd.			—		—		—		—		—			18		18
Bench Mark Construction Co., Ltd.			—		—		—		—		—			—		—
Buyoung Co., Ltd.			—		—		—		—		—			3		3
Ilsuk Co., Ltd.			—		—		—		—		—			10		10
Dongyang Telecom Co., Ltd.			—		—		—		—		—			11		11
Han Young Construction Co., Ltd.			—		—		—		—		—			3		3
Jongwon Remicon Co., Ltd.			—		—		—		—		—			13		13
Ace Heat Treating Co., Ltd.			—		—		—		—		—			72		72
Zyle Daewoo Motor Sales Co., Ltd.			—		—		—		—		—			—		—
Daewoo Development Co., Ltd.			—		—		—		—		—			—		—
Daewoo Songdo Development Co., Ltd.			—		—		—		—		(2	)		2		—
Seyang Inc.			—		—		—		—		—			27		27
Seungri Enterprise Co., Ltd.			—		—		—		—		—			3		3
Onggane Food Co., Ltd			—		—		—		—		—			1		1
Shin-E P&C Co., Ltd.			—		—		—		—		—			1		1
Montista Telecom Co., Ltd.			—		—		—		—		(3	)		3		—
Ejung Ad Co., Ltd.			—		—		—		—					3		3
Solvus Co., Ltd.			—		—		—		—		—			3		3
Myung Co., Ltd.			—		—		—		—		—			2		2
Emotion Co., Ltd.			—		—		—		—		—			8		8
Youngdong Concrete Co., Ltd.			—		—		—		—		—			7		7
Shinil Engineering Co., Ltd.			—		—		—		—		—			3		3
Korea Castiron Industrial Co., Ltd.			—		—		—		—		—			22		22
FFG DMC Co., Ltd.			—		—		—		—		—			17		17
Daeseong Metal Co., Ltd.			—		—		—		—		—			47		47
Biwang Industry Co., Ltd			—		—		—		—		—			2		2
Huimun Co., Ltd.			—		—		—		—		—			4		4
Sunun IT F Co., Ltd.			—		—		—		—		—			8		8
Young Sung Co., Ltd.			—		—		—		—		—			27		27
Yuil Industrial Electronics Co., Ltd.			—		—		—		—		—			16		16
DN TEK Inc.			—		—		—		—		—			62		62
Daeyang F.M.S Corporation			—		—		—		—		—			3		3
Kwang Jin Structure Co., Ltd.			—		—		—		—		—			31		31
Woojin Industry Corporation			—		—		—		—		—			16		16
Kwang Sung Industry Co., Ltd.			—		—		—		—		—			7		7
Matsaeng Food Co., Ltd.			—		—		—		—		—			6		6
Futech Mold Co., Ltd.			—		—		—		—		—			14		14
Samcheonri Industrial Co., Ltd.			—		—		—		—		—			13		13

F-54

		2015
		Beginning balance		Acquisition		Disposal			Valuation			Impairment			Others			Ending Balance
	In millions of won
Woojoo Environment Ind. Co., Ltd.	￦		—		—		—			—			—			13			13
Cheongatti Co., Ltd.			—		—		—			—			—			4			4
Hyungji Esquire Co., Ltd.			—		—		—			—			—			21			21
Kolmar Pharma Co., Ltd.			—		—		—			—			—			52			52
Morado Co., Ltd.			—		—		—			—			—			2			2
Myung Sung Tex Co., Ltd.			—		—		—			—			—			2			2
Areva nc Expansion			227,876	��	—		—			—			—			(57,758	)		170,118
Navanakorn Electric Co., Ltd.			16,836		—		—			—			—			1,115			17,951
PT. Kedap Saayq			12,989		—		—			—			(12,989	)		—			—
Set Holding			167,832		—		—			11,753			—			—			179,585
PT. Cirebon Energi Prasarana			—		635		—			—			—			—			635
			467,936		1,437		(6,638	)		11,763			(31,047	)		(55,551	)		387,900
	￦		715,151		1,437		(6,695	)		(35,519	)		(84,370	)		(5,525	)		584,479

(*1) The Company recognized gain and loss on disposal ofavailable-for-sale financial assets amounting to ￦4 million and ￦3,008 million, respectively, from the sales of shares of Fission 3.0,K&C- Gyeongnam Youth Job Creation Investment Fund, Korea Investment—Korea EXIM Bank CERs Private Special Asset Investment Trust 1, IBK-AUCTUS Green Growth Private Equity Firm and others and from the liquidation of Hanwha Electric Power Venture fund for the year ended December 31, 2015.

		2016
		Beginning balance		Acquisition		Disposal			Valuation			Impairment			Others			Ending balance
		In millions of won
Listed:
Korea District Heating Corp.	￦		130,410		—		—			23,773			—			—			154,183
Kwanglim Co., Ltd.(*1)			262		—		(214	)		598			—			(646	)		—
Ssangyong Motor Co., Ltd.			299		—		—			5			—			—			304
Sungjee Construction. Co., Ltd.			5		—		—			16			—			—			21
Korea Line Corp.			—		—		—			—			—			—			—
Namkwang Engineering & Construction Co., Ltd.			1		—		—			(1	)		—			—			—
Pumyang Construction Co., Ltd.			—		—		—			—			—			—			—
ELCOMTEC Co., Ltd.			53		—		—			21			—			—			74
PAN ocean Co., Ltd.			6		—		—			1			—			—			7
Borneo International Furniture Co., Ltd.			103		—		—			—			—			—			103
TONGYANG Inc.(*1)			217		—		(44	)		25			—			(198	)		—
TONGYANG networks Inc.(*1)			6		—		(3	)		—			—			(3	)		—
Nexolon Co., Ltd.(*1)			3,196		—		(3,137	)		569			—			(628	)		—
Dongbu Corporation,			—		—		—			—			—			12			12
PT Adaro Energy Tbk			21,012		—		—			52,049			—			—			73,061
Energy Fuels Inc.			5,926		—		—			(2,775	)		(3,273	)		3,507			3,385
Baralaba Coal Company Limited (formerly, Cockatoo Coal Limited)			42		—		—			—			—			—			42
Denison Mines Corp.			34,457		—		—			—			(5,849	)		7,896			36,504
Fission 3.0			30		—		—			(16	)		—			2			16
Fission Uranium Corp.			554		—		—			(126	)		—			31			459
			196,579		—		(3,398	)		74,139			(9,122	)		9,973			268,171

F-55

		2016
		Beginning balance		Acquisition		Disposal			Valuation			Impairment			Others			Ending balance
		In millions of won
Unlisted:
K&C—Gyeongnam youth job creation Investment Fund	￦		1,207		—		—			—			—			—			1,207
Korea investment—Korea EXIM Bank CERs Private Special Asset Investment Trust I			571		—		—			—			—			—			571
Troika Overseas Resource Development Private Equity Firm			1,553		—		—			—			—			—			1,553
IBK-AUCTUS Green Growth Private Equity firm(*1)			855		—		(814	)		—			—			—			41
Global Dynasty Overseas Resource Development Private Equity Firm			2,233		—		—			—			—			—			2,233
Intellectual Discovery, Ltd.			1,375		—		—			—			—			—			1,375
Hanwha-KOSEP New Renewable Energy Private Special Assets Investment Trust 1(*1)			1,069		3,685		(365	)		—			—			—			4,389
Construction Guarantee			805		—		—			14			—			—			819
Plant & Mechanical Contractors Financial Cooperative of Korea			36		—		—			—			—			—			36
Fire Guarantee			20		—		—			—			—			—			20
Korea Software Financial Cooperative			301		3,000		—			—			—			—			3,301
Engineering Financial Cooperative			60		—		—			—			—			—			60
Electric Contractors Financial Cooperative			152		—		—			—			—			—			152
Korea Specialty Contractor Financial Cooperative			417		—		—			—			—			—			417
Information & Communication Financial Cooperative			10		—		—			—			—			—			10
Korea Electric Engineers Association			40		—		—			—			—			—			40
Korea investment—Investment Pool for Public funds 10			—		142,470		—			(1,155	)		—			—			141,315
Samsung investment—Investment Pool for Public funds 2			—		213,710		—			(1,790	)		—			—			211,920
Samsung investment—Investment Pool for Public funds 1			—		53,220		—			(8	)		—			—			53,212
Korea investment—Hanwha KT Mater Lease Private Special Investment Trust(*1)			—		31,200		(640	)		8			—			—			30,568
Onggane Food Co., Ltd.			1		—		—			—			—			—			1
Shin-E P&C Co., Ltd.			1		—		—			—			—			—			1
Ejung Ad Co., Ltd.			3		—		—			—			—			—			3
Solvus Co., Ltd.			3		—		—			—			—			—			3
Myung Co., Ltd.			2		—		—			—			—			—			2
Emotion Co., Ltd.			8		—		—			—			—			—			8
Youngdong Concrete Co., Ltd.			7		—		—			—			—			—			7
Shinil Engineering Co., Ltd.			3		—		—			—			—			—			3
Korea Castiron Industrial Co., Ltd.			22		—		—			—			(22	)		—			—
FFG DMC Co., Ltd.			17		—		—			—			(68	)		51			—
Daeseong Metal Co., Ltd.			47		—		—			—			—			(47	)		—
Biwang Industry Co., Ltd			2		—		—			—			—			—			2
Huimun Co., Ltd.			4		—		—			—			—			—			4
Sunun IT F Co., Ltd.			8		—		—			—			—			(8	)		—

F-56

		2016
		Beginning balance		Acquisition		Disposal		Valuation		Impairment			Others			Ending balance
		In millions of won
Young Sung Co., Ltd.	￦		27		—		—		—		—			—			27
Yuil Industrial Electronics Co., Ltd.			16		—		—		—		—			—			16
DN TEK Inc.			62		—		—		—		(56	)		—			6
Daeyang F.M.S Corporation			3		—		—		—		—			20			23
Kwang Jin Structure Co., Ltd.			31		—		—		—		—			—			31
Woojin Industry Corporation			16		—		—		—		—			—			16
Kwang Sung Industry Co., Ltd.			7		—		—		—		—			—			7
Matsaeng Food Co., Ltd.			6		—		—		—		—			(6	)		—
Futech Mold Co., Ltd.			14		—		—		—		—			—			14
Samcheonri Industrial Co., Ltd.			13		—		—		—		—			—			13
Woojoo Environment Ind. Co., Ltd.			13		—		—		—		—			—			13
Cheongatti Co., Ltd.			4		—		—		—		—			—			4
Hyungji Esquire Co., Ltd.			21		—		—		—		—			1			22
Kolmar Pharma Co., Ltd.			52		—		—		—		(49	)		—			3
Morado Co., Ltd.			2		—		—		—		—			—			2
Myung Sung Tex Co., Ltd.			2		—		—		—		—			—			2
Kwang Sung Co., Ltd.			—		—		—		—		—			31			31
EverTechno. Co.,Ltd.			—		—		—		—		(140	)		147			7
Autowel Co.,Ltd.			—		—		—		—		—			13			13
Woobang Construction Co., Ltd.			—		—		—		—		—			8			8
Shin Pyung Co., Ltd.			—		—		—		—		—			3			3
JMC Heavy Industries Co., Ltd.			—		—		—		—		—			27			27
Najin Steel Co., Ltd.			—		—		—		—		—			5			5
Kunyang Food Co., Ltd.			—		—		—		—		(1	)		1			—
Sinkwang Industry Co., Ltd.			—		—		—		—		—			5			5
Join Land Co., Ltd.			—		—		—		—		—			1			1
Crystal Co., Ltd.			—		—		—		—		—			2			2
Elephant & Friends Co., Ltd.			—		—		—		—		—			3			3
Mireco Co., Ltd.			—		—		—		—		—			11			11
L&K Industry Co., Ltd.			—		—		—		—		—			24			24
JO Tech Co., Ltd.			—		—		—		—		—			25			25
Samwoo EMC Co., Ltd.			—		—		—		—		(117	)		117			—
Kendae Printing Co., Ltd.			—		—		—		—		—			21			21
Golden Tech Co., Ltd.			—		—		—		—		(114	)		114			—
Dauning Co., Ltd.			—		—		—		—		—			6			6
Korea Trecision Co., Ltd.			—		—		—		—		—			5			5
Buhmwoo Chemical Corp.			—		—		—		—		(20	)		20			—
Ace Track Co., Ltd.			—		—		—		—		(160	)		219			59
Taebok Machinery Co., Ltd.			—		—		—		—		—			11			11
Yooah Industry Co., Ltd.			—		—		—		—		—			13			13
Yoo-A Construction Co., Ltd.			—		—		—		—		—			11			11
Dung Hwan Co., Ltd.			—		—		—		—		—			5			5
Dongjin Metal Co., Ltd.			—		—		—		—		(27	)		27			—
Hurim Biocell Co., Ltd.			—		—		—		—		—			5			5
P. J, Trading Co., LTd.			—		—		—		—		—			—			—
Sunjin Power Tech Co., Ltd.			—		—		—		—		(157	)		247			90
Smart Power Co.,Ltd.			—		200		—		—		—			—			200
Sunjin Inprecision Co.,Ltd.			—		—		—		—		(169	)		169			—
Haseung Industries Co.,Ltd.			—		—		—		—		—			28			28
Beer Yeast Korea Inc.			—		—		—		—		—			7			7
Daeryung Corporation			—		—		—		—		—			10			10
Korea Bio Red Ginseng Co.,Ltd.			—		—		—		—		—			10			10
ESGI Co.,Ltd.			—		—		—		—		(120	)		120			—

F-57

		2016
		Beginning balance		Acquisition		Disposal			Valuation			Impairment			Others			Ending balance
		In millions of won
ENH Co.,Ltd.			—		—		—			—			(55	)		55			—
HS Development Co.,Ltd.			—		—		—			—			—			54			54
OCO Co.,Ltd.			—		—		—			—			—			11			11
B CON Co.,Ltd.			—		—		—			—			—			6			6
Doosun Co.,Ltd.			—		—		—			—			(62	)		62			—
CheonIl Metal Co., Ltd.			—		—		—			—			—			4			4
Teakwang Tech Co., Ltd.			—		—		—			—			—			12			12
SsangMa Machine Co., Ltd.			—		—		—			—			—			1			1
SinJin Co., Ltd.			—		—		—			—			—			9			9
Ace Integration Co., Ltd			—		—		—			—			—			21			21
AceInti Agricultural Co., Ltd.			—		—		—			—			—			1			1
KyungDong Co., Ltd.			—		—		—			—			—			1			1
ChunWon Development Co., Ltd.			—		—		—			—			—			39			39
WonIl Co., Ltd.			—		—		—			—			—			50			50
SungLim Industrial Co., Ltd.			—		—		—			—			—			1			1
DaeHa Co., Ltd.			—		—		—			—			—			11			11
Korea Minerals Co., Ltd.			—		—		—			—			—			135			135
HyoDong Development Co., Ltd.			—		—		—			—			—			24			24
Haspe Tech Co., Ltd.			—		—		—			—			—			20			20
JoHyun Co., Ltd.			—		—		—			—			—			18			18
KC Co., Ltd.			—		—		—			—			—			3			3
SeongJi Industrial Co.,Ltd.			—		—		—			—			—			1			1
SsangYong E&C Co., Ltd.(*1)			—		—		(9	)		—			—			9			—
Areva nc Expansion			170,118		—		—			—			(69,927	)		(1,719	)		98,472
Navanakorn Electric Co., Ltd.			17,951		—		—			—			—			558			18,509
PT. Kedap Saayq			—		—		—			—			—			—			—
Set Holding			179,585		—		—			(9,415	)		—			—			170,170
PT. Cirebon Energi Prasarana			635		1,999		—			—			—			75			2,709
			387,900		449,484		(1,828	)		(12,346	)		(77,581	)		932			746,561
	￦		584,479		449,484		(5,226	)		61,793			(86,703	)		10,905			1,014,732

(*1) The Company recognized gain and loss on disposal ofavailable-for-sale financial assets amounting to ￦1,482 million and ￦9 million, respectively, from the sales of shares of Kwanglim Co., Ltd., TONGYANG Inc., TONGYANG networks Inc., Nexolon Co., Ltd. and SsangYong E&C Co., Ltd. and from the partial sales ofIBK-AUCTUS Green Growth Private Equity Firm, Hanwha-KOSEP New Renewable Energy Private Special Assets Investment Trust 1 and Korea investment—Hanwha KT Mater Lease Private Special Investment Trust for the year ended December 31, 2016.

F-58

(2) Available-for-sale financial assets of December 31, 2015 and 2016 are as follows:

	2015
	Shares		Ownership				Acquisition cost		Book value		Fair value
	In millions of won
Listed
Korea District Heating Corp.		2,264,068		19.55	%	￦		173,201		130,410		130,410
Kwanglim Co., Ltd.		84,515		0.44	%			386		262		262
Ssangyong Motor Co., Ltd.		38,568		0.03	%			428		299		299
Sungjee Construction. Co., Ltd.		1,053		0.01	%			49		5		5
Korea Line Corp.		18		0.00	%			1		—		—
Namkwang Engineering & Construction Co., Ltd.		232		0.00	%			15		1		1
Pumyang Construction Co., Ltd.		7		0.00	%			2		—		—
ELCOMTEC Co., Ltd.		32,875		0.04	%			217		53		53
PAN ocean Co., Ltd.		1,492		0.00	%			14		6		6
Borneo International Furniture Co., Ltd.		64,037		0.28	%			97		103		103
TONGYANG Inc.		78,511		0.03	%			45		217		217
TONGYANG networks Inc.		4,422		0.01	%			3		6		6
Nexolon Co., Ltd.		3,665,367		2.59	%			3,138		3,196		3,196
PT Adaro Energy Tbk		480,000,000		1.50	%			71,554		21,012		21,012
Energy Fuels Inc.		1,711,814		3.79	%			16,819		5,926		5,926
Baralaba Coal Company Limited (formerly, Cockatoo Coal Limited)		49,881,423		0.07	%			18,445		42		42
Denison Mines Corp.		58,284,000		11.24	%			84,134		34,457		34,457
Fission 3.0		300,000		0.17	%			—		30		30
Fission Uranium Corp.		800,000		0.21	%			785		554		554
								369,333		196,579		196,579
Unlisted(*1)
K&C—Gyeongnam youth job creation Investment Fund		24		10.00	%			1,207		1,207		—
Korea Investment—Korea EXIM Bank CERs Private Special Asset Investment Trust I		1,758,731,002		14.18	%			1,752		571		—
Troika Overseas Resource Development Private Equity Firm		13,340,012,100		3.66	%			13,340		1,553		—
IBK-AUCTUS Green Growth Private Equity firm		233		6.30	%			855		855		—
Global Dynasty Overseas Resource Development Private Equity Firm		2,233,407,439		7.46	%			2,233		2,233		—
Intellectual Discovery, Ltd.		1,000,000		8.81	%			5,000		1,375		—
Hanwha-KOSEP New Renewable Energy Private Special Assets Investment Trust 1		1,069,432,095		5.00	%			1,069		1,069		—
Construction Guarantee(*2)		571		0.02	%			601		805		805
Plant & Mechanical Contractors Financial Cooperative of Korea		50		0.01	%			36		36		—
Fire Guarantee		40		0.02	%			20		20		—
Korea Software Financial Cooperative		301		0.15	%			301		301		—
Engineering Financial Cooperative		528		0.10	%			60		60		—
Electric Contractors Financial Cooperative		800		0.03	%			152		152		—
Korea Specialty Contractor Financial Cooperative		476		0.01	%			417		417		—
Information & Communication Financial Cooperative		70		0.01	%			10		10		—
Korea Electric Engineers Association		400		0.26	%			40		40		—

F-59

	2015
	Shares		Ownership				Acquisition cost		Book value		Fair value
	In millions of won
Hwan Young Steel Co., Ltd.		10,916		0.14	%	￦		1,092		97		—
Woobang ENC Co., Ltd		14		0.00	%			22		22		—
Dongnam Co., Ltd.		2,070		0.46	%			72		72		—
SAMBO AUTO. Co., Ltd.		15,066		0.02	%			38		38		—
Mobo Co., Ltd.		504		0.00	%			14		14		—
Poonglim Industrial Co., Ltd.		1,915		0.01	%			93		93		—
HANKOOK Silicon Co., Ltd.		7,513,022		10.44	%			7,513		7,513		—
Kun Young Engineering & Construction Co., Ltd.		100		0.00	%			5		5		—
Pumyang Asset Management Co., Ltd.		13		0.00	%			3		3		—
Dae Kwang Semiconductor Co., Ltd.		589		0.07	%			6		6		—
Sanbon Department Store		828		0.01	%			124		3		—
Woori Ascon Co., Ltd.		25		0.34	%			10		10		—
Miju Steel Mfg. Co., Ltd.		99,804		0.23	%			51		51		—
BnB Sungwon Co., Ltd.		589		0.07	%			15		15		—
Hana Civil Engineering Co., Ltd.		23		0.00	%			1		1		—
KC Development Co., Ltd.		839		0.02	%			6		6		—
IMHWA Corp.		329		0.11	%			5		5		—
IXELON Co., Ltd.		2,292		0.02	%			23		—		—
DAIM Special Vehicle Co., Ltd.		58		0.08	%			10		10		—
ASA KIMJE Co., Ltd.		23,245		1.11	%			465		—		—
ASA JEONJU Co., Ltd.		34,846		1.34	%			697		69		—
KYUNGWON Co., Ltd.		2,812		0.17	%			14		14		—
Moonkyung Silica Co., Ltd.		42		0.56	%			—		—		—
Yousung Remicon Co., Ltd.		8		0.26	%			4		4		—
Sungkwang Timber Co., Ltd.		9		0.34	%			4		4		—
Yongbo Co., Ltd.		61		0.20	%			3		3		—
HJ Steel Co., Ltd.		218		0.07	%			2		2		—
Ildong Air Conditioning Co., Ltd.		218		0.16	%			3		—		—
KS Remicon Co., Ltd.		12		0.04	%			3		3		—
Sewoong Heavy Industries Co., Ltd.		7,931		0.10	%			40		40		—
SIN-E Steel Co., Ltd.		109		0.08	%			33		33		—
Joongang Platec Co., Ltd.		3,591		0.75	%			72		72		—
Hangjin Steel Co., Ltd.		116		1.08	%			116		—		—
Pyungsan SI Ltd.		434		0.01	%			9		9		—
Samgong Development Co., Ltd.		12		0.01	%			7		7		—
Joongang Development Co., Ltd.		540		0.12	%			8		8		—
AJS Co., Ltd.		12,906		0.23	%			32		32		—
SHIN-E B&P Co., Ltd.		119		0.13	%			10		10		—
MSE Co., Ltd.		429		0.13	%			9		9		—
Ilrim Nano Tec Co., Ltd.		1,520		0.07	%			15		15		—
Kwang Myeong Electronics Technology Co., Ltd.		113		0.37	%			11		11		—
YoungjinHi-Tech Co., Ltd.		2,512		0.25	%			126		21		—
Dong Woo International Co., Ltd.		90		0.37	%			18		18		—
Bench Mark Construction Co., Ltd.		2		0.00	%			—		—		—
Buyoung Co., Ltd.		270		0.00	%			3		3		—
Ilsuk Co., Ltd.		152		0.17	%			10		10		—
Dongyang Telecom Co., Ltd.		1,760		0.01	%			11		11		—
Han Young Construction Co., Ltd.		35		0.03	%			3		3		—
Jongwon Remicon Co., Ltd.		31		0.18	%			13		13		—
Ace Heat Treating Co., Ltd.		477		1.43	%			72		72		—
Zyle Daewoo Motor Sales Co., Ltd.		22		0.00	%			—		—		—
Daewoo Development Co., Ltd.		8		0.00	%			—		—		—
Daewoo Songdo Development Co., Ltd.		301		0.00	%			2		—		—

F-60

	2015
	Shares		Ownership			Acquisition cost		Book value		Fair value
	In millions of won
Seyang Inc.		537		0.05%	￦		27		27		—
Seungri Enterprise Co., Ltd.		93		0.05%			3		3		—
Onggane Food Co., Ltd		5		0.07%			1		1		—
Shin-E P&C Co., Ltd.		12		0.00%			1		1		—
Montista Telecom Co., Ltd.		5,409		0.00%			3		—		—
Ejung Ad Co., Ltd.		132		0.09%			3		3		—
Solvus Co., Ltd.		1,056		0.04%			3		3		—
Myung Co., Ltd.		89		0.05%			2		2		—
Emotion Co., Ltd.		167		0.61%			8		8		—
Youngdong Concrete Co., Ltd.		32		0.32%			7		7		—
Shinil Engineering Co., Ltd.		887		0.06%			3		3		—
Korea Castiron Industrial Co., Ltd.		617		1.86%			22		22		—
FFG DMC Co., Ltd.		12		0.00%			17		17		—
Daeseong Metal Co., Ltd.		518		2.37%			47		47		—
Biwang Industry Co., Ltd		406		0.04%			2		2		—
Huimun Co., Ltd.		263		0.26%			4		4		—
Sunun IT F Co., Ltd.		133		0.52%			8		8		—
Young Sung Co., Ltd.		89		0.40%			27		27		—
Yuil Industrial Electronics Co., Ltd.		804		0.32%			16		16		—
DN TEK Inc.		12,401		0.29%			62		62		—
Daeyang F.M.S Corporation		84		0.05%			3		3		—
Kwang Jin Structure Co., Ltd.		3,072		0.60%			31		31		—
Woojin Industry Corporation		3		0.00%			16		16		—
Kwang Sung Industry Co., Ltd.		325		0.35%			7		7		—
Matsaeng Food Co., Ltd.		277		0.56%			6		6		—
Futech Mold Co., Ltd.		274		0.27%			14		14		—
Samcheonri Industrial Co., Ltd.		533		0.98%			13		13		—
Woojoo Environment Ind. Co., Ltd.		101		0.11%			13		13		—
Cheongatti Co., Ltd.		57		0.10%			4		4		—
Hyungji Esquire Co., Ltd.		52		0.02%			21		21		—
Kolmar Pharma Co., Ltd.		1,426		0.01%			52		52		—
Morado Co., Ltd.		209		0.04%			2		2		—
Myung Sung Tex Co., Ltd.		20		0.00%			2		2		—
Areva nc Expansion		1,077,124		13.49%			288,443		170,118		—
Navanakorn Electric Co., Ltd.(*3)		4,442,800		29.00%			17,216		17,951		—
PT. Kedap Saayq		671		10.00%			18,540		—		—
Set Holding(*4)		1,100,220		2.50%			229,255		179,585		179,585
PT. Cirebon Energi Prasarana		420		10.00%			635		635		—
							592,550		387,900		180,390
					￦		961,883		584,479		376,969

(*1) Book values of unlisted equity securities held by the Company for which a quoted market price does not exist in an active market and fair value cannot be measured reliably were measured at cost.

(*2) The Company has estimated the fair value of the investment in Construction Guarantee based upon the price which would be applied when the investment is returned. The Company has recognized the difference between its fair value and book value as a gain or loss on valuation ofavailable-for-sale financial assets in other comprehensive income or loss during the year ended December 31, 2015.

(*3) Although the Company holds more than 20% of the equity shares of these investments, the Company cannot exercise significant influence.

F-61

(*4) The Company has estimated the fair value of Set Holding by using the discounted cash flow method and has recognized the difference between its fair value and book value as gain or loss on valuation ofavailable-for-sale financial assets in other comprehensive income or loss during the year ended December 31, 2015.

	2016
	Shares		Ownership				Acquisition cost		Book value		Fair value
	In millions of won
Listed
Korea District Heating Corp.		2,264,068		19.55	%	￦		173,201		154,183		154,183
Ssangyong Motor Co., Ltd.		38,568		0.03	%			428		304		304
Sungjee Construction. Co., Ltd.		10,530		0.01	%			49		21		21
Korea Line Corp.		18		0.00	%			1		—		—
Namkwang Engineering & Construction Co., Ltd.		46		0.00	%			15		—		—
Pumyang Construction Co., Ltd.		7		0.00	%			2		—		—
ELCOMTEC Co., Ltd.		32,875		0.04	%			217		74		74
PAN ocean Co., Ltd.		1,492		0.00	%			14		7		7
Borneo International Furniture Co., Ltd.		64,037		0.28	%			97		103		103
Dongbu Corporation,		1,229		0.02	%			12		12		12
PT Adaro Energy Tbk		480,000,000		1.50	%			71,554		73,061		73,061
Energy Fuels Inc.		1,711,814		2.59	%			16,819		3,385		3,385
Baralaba Coal Company Limited (formerly, Cockatoo Coal Limited)(*6)		99,763		0.07	%			18,445		42		42
Denison Mines Corp.		58,284,000		10.93	%			84,134		36,504		36,504
Fission 3.0		300,000		0.17	%			—		16		16
Fission Uranium Corp.		800,000		0.17	%			785		459		459
								365,773		268,171		268,171
Unlisted (*1)
K&C—Gyeongnam youth job creation Investment Fund		24		10.00	%			1,207		1,207		—
Korea investment – Korea EXIM Bank CERs Private Special Asset Investment Trust I		1,758,731,002		14.18	%			1,752		571		—
Troika Overseas Resource Development Private Equity Firm		13,340,012,100		3.66	%			13,340		1,553		—
IBK-AUCTUS Green Growth Private Equity firm		152		6.29	%			41		41		—
Global Dynasty Overseas Resource Development Private Equity Firm		2,233,407,439		7.46	%			2,233		2,233		—
Intellectual Discovery, Ltd.		1,000,000		8.81	%			5,000		1,375		—
Hanwha-KOSEP New Renewable Energy Private Special Assets Investment Trust 1		4,256,096,329		5.00	%			4,389		4,389		—
Construction Guarantee(*2)		571		0.02	%			601		819		819
Plant & Mechanical Contractors Financial Cooperative of Korea		50		0.01	%			36		36		—
Fire Guarantee		40		0.02	%			20		20		—
Korea Software Financial Cooperative		5,186		1.39	%			3,301		3,301		—
Engineering Financial Cooperative		486		0.05	%			60		60		—
Electric Contractors Financial Cooperative		800		0.03	%			152		152		—
Korea Specialty Contractor Financial Cooperative		476		0.01	%			417		417		—
Information & Communication Financial Cooperative		70		0.01	%			10		10		—
Korea Electric Engineers Association		400		0.24	%			40		40		—

F-62

	2016
	Shares		Ownership				Acquisition cost		Book value		Fair value
	In millions of won
Korea investment—Investment Pool for Public funds 10(*5)		—		—		￦		142,470		141,315		141,315
Samsung investment—Investment Pool for Public funds 2(*5)		—		—				213,710		211,920		211,920
Samsung investment—Investment Pool for Public funds 1(*5)		—		—				53,220		53,212		53,212
Korea investment—Hanwha KT Mater Lease Private Special Investment Trust (*5)		—		—				30,560		30,568		30,568
Hwan Young Steel Co., Ltd.		10,916		0.14	%			1,092		97		—
SAMBO AUTO. Co., Ltd.		15,066		0.02	%			38		38		—
Mobo Co., Ltd.		504		0.00	%			14		14		—
HANKOOK Silicon Co., Ltd.		3,005,208		10.44	%			7,513		1,495		—
Dae Kwang Semiconductor Co., Ltd.		589		0.07	%			6		6		—
Sanbon Department Store		828		0.01	%			124		3		—
Miju Steel Mfg. Co., Ltd.		99,804		0.23	%			51		51		—
BnB Sungwon Co., Ltd.		589		0.07	%			15		15		—
Hana Civil Engineering Co., Ltd.		23		0.00	%			1		1		—
KC Development Co., Ltd.		839		0.02	%			6		6		—
IMHWA Corp.		329		0.11	%			5		5		—
DALIM Special Vehicle Co., Ltd.		58		0.08	%			10		10		—
ASA JEONJU Co., Ltd.		34,846		1.34	%			697		69		—
Moonkyung Silica Co., Ltd.		42		0.56	%			—		—		—
Sungkwang Timber Co., Ltd.		9		0.34	%			4		4		—
Yongbo Co., Ltd.		61		0.20	%			3		3		—
HJ Steel Co., Ltd.		218		0.07	%			2		2		—
KS Remicon Co., Ltd.		12		0.04	%			3		3		—
SIN-E Steel Co., Ltd.		109		0.08	%			33		33		—
Joongang Platec Co., Ltd.		3,591		0.75	%			72		35		—
Pyungsan SI Ltd.		434		0.01	%			9		9		—
Samgong Development Co., Ltd.		12		0.01	%			7		7		—
Joongang Development Co., Ltd.		540		0.12	%			8		8		—
AJS Co., Ltd.		12,906		0.23	%			32		32		—
SHIN-E B&P Co., Ltd.		119		0.13	%			10		10		—
MSE Co., Ltd.		429		0.13	%			9		9		—
Ilrim Nano Tec Co., Ltd.		1,520		0.07	%			15		15		—
YoungjinHi-Tech Co., Ltd.		2,512		0.25	%			126		21		—
Dong Woo International Co., Ltd.		90		0.37	%			18		18		—
Buyoung Co., Ltd.		270		0.00	%			3		3		—
Ilsuk Co., Ltd.		152		0.17	%			10		10		—
Dongyang Telecom Co., Ltd.		1,760		0.01	%			11		11		—
Han Young Construction Co., Ltd.		35		0.03	%			3		3		—
Jongwon Remicon Co., Ltd.		31		0.18	%			13		13		—
Ace Heat Treating Co., Ltd.		477		1.43	%			72		72		—
Zyle Daewoo Motor Sales Co., Ltd.		22		0.00	%			—		—		—
Daewoo Development Co., Ltd.		8		0.00	%			—		—		—
Seyang Inc.		537		0.05	%			27		27		—
Seungri Enterprise Co., Ltd.		93		0.05	%			3		3		—
Onggane Food Co., Ltd		5		0.07	%			1		1		—
Shin-E P&C Co., Ltd.		12		0.00	%			1		1		—
Ejung Ad Co., Ltd.		132		0.09	%			3		3		—
Solvus Co., Ltd.		1,056		0.04	%			3		3		—
Myung Co., Ltd.		89		0.05	%			2		2		—
Emotion Co., Ltd.		167		0.61	%			8		8		—

F-63

	2016
	Shares		Ownership				Acquisition cost		Book value		Fair value
	In millions of won
Youngdong Concrete Co., Ltd.		32		0.32	%	￦		7		7		—
Shinil Engineering Co., Ltd.		887		0.06	%			3		3		—
Biwang Industry Co., Ltd		406		0.04	%			2		2		—
Huimun Co., Ltd.		263		0.26	%			4		4		—
Young Sung Co., Ltd.		89		0.40	%			27		27		—
Yuil Industrial Electronics Co., Ltd.		804		0.32	%			16		16		—
DN TEK Inc.		12,401		0.29	%			62		6		—
Daeyang F.M.S Corporation		593		0.40	%			23		23		—
Kwang Jin Structure Co., Ltd.		3,072		0.60	%			31		31		—
Woojin Industry Corporation		3		0.00	%			16		16		—
Kwang Sung Industry Co., Ltd.		325		0.35	%			7		7		—
Futech Mold Co., Ltd.		274		0.27	%			14		14		—
Samcheonri Industrial Co., Ltd.		533		0.98	%			13		13		—
Woojoo Environment Ind. Co., Ltd.		101		0.11	%			13		13		—
Cheongatti Co., Ltd.		57		0.10	%			4		4		—
Hyungji Esquire Co., Ltd.		55		0.02	%			22		22		—
Kolmar Pharma Co., Ltd.		1,426		0.01	%			52		3		—
Morado Co., Ltd.		209		0.04	%			2		2		—
Myung Sung Tex Co., Ltd.		20		0.00	%			2		2		—
Kwang Sung Co., Ltd.		610		0.53	%			31		31		—
EverTechno. Co.,Ltd.		29,424		0.73	%			147		7		—
Autowel Co.,Ltd.		260		0.38	%			13		13		—
Woobang Construction Co., Ltd.		8		0.00	%			8		8		—
Shin Pyung Co., Ltd.		6		0.03	%			3		3		—
JMC Heavy Industries Co., Ltd.		2,724		0.10	%			27		27		—
Najin Steel Co., Ltd.		37		0.06	%			5		5		—
Sinkwang Industry Co., Ltd.		1,091		1.68	%			5		5		—
Join Land Co., Ltd.		33		0.00	%			1		1		—
Crystal Co., Ltd.		22		0.07	%			2		2		—
Elephant & Friends Co., Ltd.		563		0.61	%			3		3		—
Mireco Co., Ltd.		109		0.25	%			11		11		—
L&K Industry Co., Ltd.		1,615		0.60	%			24		24		—
JO Tech Co., Ltd.		1,263		0.62	%			25		25		—
Kendae Printing Co., Ltd.		422		0.60	%			21		21		—
Dauning Co., Ltd.		231		0.41	%			6		6		—
Korea Trecision Co., Ltd.		22		0.45	%			5		5		—
Ace Track Co., Ltd.		3,130		1.08	%			219		59		—
Taebok Machinery Co., Ltd.		109		1.08	%			11		11		—
Yooah Industry Co., Ltd.		130		0.02	%			13		13		—
Yoo-A Construction Co., Ltd.		105		0.20	%			11		11		—
Dung Hwan Co., Ltd.		531		0.02	%			5		5		—
Hurim Biocell Co., Ltd.		113		0.00	%			5		5		—
P. J, Trading Co., Ltd.		12		0.04	%			—		—		—
Sunjin Power Tech Co., Ltd.		4,941		0.92	%			247		90		—
Smart Power Co.,Ltd.		133,333		5.55	%			200		200		—
Haseung Industries Co.,Ltd.		55		0.62	%			28		28		—
Beer Yeast Korea Inc.		1,388		0.43	%			7		7		—
Daeryung Corporation		207		0.19	%			10		10		—
Korea Bio Red Ginseng Co.,Ltd.		194		0.09	%			10		10		—
ENH Co.,Ltd.		1,086		0.19	%			54		54		—
OCO Co.,Ltd.		123		0.37	%			11		11		—
B CON Co.,Ltd.		96		1.16	%			6		6		—
Teakwang Tech Co., Ltd.		11		0.15	%			4		4		—

F-64

	2016
	Shares		Ownership				Acquisition cost		Book value		Fair value
	In millions of won
SsangMa Machine Co., Ltd.		2,460		0.11	%	￦		12		12		—
SinJin Co., Ltd.		4		0.05	%			1		1		—
Ace Integration Co., Ltd		233		0.30	%			9		9		—
AceInti Agricultural Co., Ltd.		93		0.09	%			21		21		—
Teakwang Tech Co., Ltd.		3		0.00	%			1		1		—
KyungDong Co., Ltd.		130		0.01	%			1		1		—
ChunWon Development Co., Ltd.		193		0.19	%			39		39		—
WonIl Co., Ltd.		999		0.15	%			50		50		—
SungLim Industrial Co., Ltd.		29		0.03	%			1		1		—
DaeHa Co., Ltd.		141		0.54	%			11		11		—
Korea Minerals Co., Ltd.		191		0.05	%			135		135		—
HyoDong Development Co., Ltd.		119		0.15	%			24		24		—
Haspe Tech Co., Ltd.		652		0.55	%			20		20		—
JoHyun Co., Ltd.		350		1.56	%			18		18		—
KC Co., Ltd.		5,107		0.17	%			3		3		—
SeongJi Industrial Co.,Ltd.		41		0.05	%			1		1		—
Areva nc Expansion		1,077,124		13.49	%			288,443		98,472		98,472
Navanakorn Electric Co., Ltd.(*3)		8,885,600		26.93	%			17,216		18,509		—
PT. Kedap Saayq		671		10.00	%			18,540		—		—
Set Holding(*4)		1,100,220		2.50	%			229,255		170,170		170,170
PT. Cirebon Energi Prasarana		22,420		10.00	%			2,612		2,709		—
								1,040,553		746,561		706,476
						￦		1,406,326		1,014,732		974,647

(*1) Book values of unlisted equity securities held by the Company for which a quoted market price does not exist in an active market and fair value cannot be measured reliably were measured at cost.

(*2) The Company has estimated the fair value of the investment in Construction Guarantee based upon the price which would be applied when the investment is returned. The Company has recognized the difference between its fair value and book value as a gain or loss on valuation ofavailable-for-sale financial assets in other comprehensive income or loss during the year ended December 31, 2016.

(*3) Although the Company holds more than 20% of the equity shares of these investments, the Company cannot exercise significant influence.

(*4) The Company has estimated the fair value of Set Holding by using the discounted cash flow method and has recognized the difference between its fair value and book value as gain or loss on valuation ofavailable-for-sale financial assets in other comprehensive income or loss during the year ended December 31, 2016.

(*5) As of December 31, 2016, the Company invested in ￦437,015 million as beneficiary securities exclusively for payment of decommissioning cost of nuclear power plants. The Company has measured the fair value of the beneficiary securities based on its net asset value.

(*6) The number of shares has changed due to the merger of shares (500:1) during the year ended December 31, 2016.

F-65

10. Held-to-maturity Investments

Held-to-maturity investments as of December 31, 2015 and 2016 are as follows:

		2015
		Beginning balance		Acquisition		Disposal			Others			Ending balance
		In millions of won
Government bonds	￦		3,601		432		(410	)		—			3,623
Corporate bonds			13		—		—			(13	)		—
	￦		3,614		432		(410	)		(13	)		3,623
Current	￦		265		—		(186	)		301			380
Non-current			3,349		432		(224	)		(314	)		3,243

		2016
		Beginning balance		Acquisition		Disposal			Others			Ending balance
		In millions of won
Government bonds	￦		3,623		149		(528	)		—			3,244
	￦		3,623		149		(528	)		—			3,244
Current	￦		380		—		(380	)		114			114
Non-current			3,243		149		(148	)		(114	)		3,130

11. Derivatives

(1) Derivatives as of December 31, 2015 and 2016 are as follows:

		2015				2016
		Current		Non-current		Current		Non-current
		In millions of won
Derivative assets
Currency forward	￦		1,498		24,896		8,370		32,806
Currency swap			95,759		491,219		184,913		540,057
Interest rate swap			—		3,778		—		4,705
Others(*1)			—		—		—		10,523
	￦		97,257		519,893		193,283		588,091
Derivative liabilities
Currency forward	￦		1,142		—		1,153		34
Currency swap			758		66,976		—		56,612
Interest rate swap			8,345		89,289		2,098		78,789
	￦		10,245		156,265		3,251		135,435

(*1) The Company has a put option to sell shares of DS POWER Co., Ltd, a related party of the Company, and the fair value of the option is recorded in ‘Others’. (Note 17)

F-66

(2) Currency forward contracts which are not designated as hedge instruments as of December 31, 2016 are as follows:

Counterparty	Contract Date		Maturity date	Contract amounts					Contract exchange rate
				Pay			Receive
	In millions of won and thousands of foreign currencies
KEB Hana Bank		2014.04.10	2021.07.12		￦	55,120		USD 52,000		1,060.00
KEB Hana Bank		2014.04.28	2021.07.12			50,784		USD 48,000		1,058.00
Bank of America		2014.04.29	2021.07.12			105,400		USD 100,000		1,054.00
KEB Hana Bank		2014.05.09	2021.07.12			104,600		USD 100,000		1,046.00
JP Morgan		2016.12.09	2017.01.09			35,215		USD 30,219		1,165.31
Woori Bank		2016.12.08	2017.01.09			59,657		USD 51,411		1,160.40
Standard Chartered		2016.12.06	2017.01.03			11,712		USD 10,000		1,171.20
Nova Scotia		2016.12.08	2017.01.09			11,590		USD 10,000		1,159.00
BNP Paribas		2016.12.13	2017.01.17			2,681		USD 2,300		1,165.65
BNP Paribas		2016.12.14	2017.01.17			4,673		USD 4,000		1,168.20
BTMU		2016.12.08	2017.01.12			11,594		USD 10,000		1,159.40
BTMU		2016.12.12	2017.01.17			11,704		USD 10,000		1,170.40
BTMU		2016.12.14	2017.01.17			2,330		USD 2,000		1,165.10
Mizuho Bank		2016.12.08	2017.01.12			11,594		USD 10,000		1,159.35
Nonghyup Bank		2016.12.12	2017.01.17			5,852		USD 5,000		1,170.40
Societe Generale		2016.12.12	2017.01.17			3,979		USD 3,400		1,170.40
Societe Generale		2016.12.15	2017.01.19			14,160		USD 12,000		1,180.00
Societe Generale		2016.12.28	2017.01.31			8,212		USD 6,800		1,207.60
BNP Paribas		2016.11.22	2017.01.25			2,351		USD 2,000		1,175.40
BNP Paribas		2016.11.25	2017.01.31			2,353		USD 2,000		1,176.40
Citibank		2016.11.25	2017.01.31			1,029		USD 874		1,177.85
Mizuho Bank		2016.12.30	2017.03.03			9,596		USD 8,000		1,199.45
HSBC		2016.11.18	2017.05.22			4,717		USD 4,000		1,179.35
HSBC		2016.11.22	2017.01.25			7,046		USD 6,000		1,174.32
HSBC		2016.12.07	2017.02.09			4,669		USD 4,000		1,167.15
HSBC		2016.12.15	2017.01.25			USD 2,489		2,923		1,174.32
HSBC		2016.12.28	2017.02.09			USD 3,424		3,997		1,167.15
HSBC		2016.12.29	2017.01.25			USD 2,693		3,162		1,174.32
HSBC		2016.12.30	2017.03.03			3,605		USD 3,000		1,201.55
HSBC		2016.12.30	2017.03.03			8,396		USD 7,000		1,199.45
Standard Chartered		2016.12.13	2017.02.15			871		USD 748		1,163.60
Nova Scotia		2016.11.22	2017.01.23			7,080		USD 6,000		1,180.03
Nova Scotia		2016.11.24	2017.01.31			3,004		USD 2,540		1,182.55
Nova Scotia		2016.12.26	2017.02.28			2,397		USD 2,000		1,198.70
Nova Scotia		2016.12.30	2017.03.03			6,017		USD 5,000		1,203.30
Nova Scotia		2016.12.30	2017.03.03			9,597		USD 8,000		1,199.60
Nonghyup Bank		2016.11.22	2017.01.25			2,446		USD 2,083		1,174.73
Nonghyup Bank		2016.12.27	2017.02.28			2,410		USD 2,000		1,205.20
Credit Agricole		2016.11.21	2017.01.23			1,182		USD 1,000		1,181.55
Credit Agricole		2016.12.26	2017.02.28			2,397		USD 2,000		1,198.25
Societe Generale		2016.11.22	2017.01.25			2,352		USD 2,000		1,175.90
Societe Generale		2016.11.30	2017.02.02			1,167		USD 1,000		1,166.70
Societe Generale		2016.12.29	2017.02.02			USD 913		1,065		1,166.70
Societe Generale		2016.12.06	2017.02.08			1,168		USD 1,000		1,167.65
Societe Generale		2016.12.23	2017.02.27			4,807		USD 4,000		1,201.78
Mizuho Bank		2016.12.12	2017.01.10			19,887		USD 17,000		1,169.83
Credit Agricole		2016.12.19	2017.01.13			8,302		USD 7,000		1,186.05
Standard Chartered		2016.12.15	2017.01.13			16,503		USD 14,000		1,178.76
KEB Hana Bank		2016.12.29	2017.01.05			341		EUR 270		1,262.26
KEB Hana Bank		2016.08.26	2017.02.16			4,812		EUR 3,800		1,266.30

F-67

Counterparty	Contract Date		Maturity date	Contract amounts				Contract exchange rate
				Pay		Receive
	In millions of won and thousands of foreign currencies
KEB Hana Bank		2016.09.07	2017.09.06	￦	3,121		EUR 2,500		1,248.20
KEB Hana Bank		2016.08.26	2017.08.09		1,280		CNY 7,800		164.13
KEB Hana Bank		2016.09.07	2017.09.06		834		CNY 5,200		160.48
Societe Generale		2016.12.14	2017.06.16		2,245		USD 1,929		1,163.90
Nova Scotia		2016.12.13	2017.06.15		2,328		USD 2,000		1,164.20
Nomura		2016.12.07	2017.06.12		1,000		USD 858		1,165.10
Nova Scotia		2016.11.16	2017.05.18		23		USD 20		1,166.50
Societe Generale		2016.11.30	2017.06.02		771		USD 661		1,166.70
Nova Scotia		2016.12.07	2017.06.09		737		USD 631		1,167.70
Nomura		2016.12.01	2017.06.05		5,839		USD 5,000		1,167.80
Credit Suisse		2016.11.29	2017.06.01		5,840		USD 5,000		1,167.90
Nova Scotia		2016.12.07	2017.06.09		3,505		USD 3,000		1,168.20
Societe Generale		2016.11.28	2017.05.31		2,047		USD 1,751		1,168.50
BNP Paribas		2016.12.29	2017.07.03		4,241		USD 3,513		1,207.40
Nova Scotia		2016.12.15	2017.03.20		USD 15,000		17,678		1,178.50
Nova Scotia		2016.12.16	2017.03.20		USD 3,000		3,552		1,184.00
Nova Scotia		2016.12.20	2017.03.22		USD 3,000		3,571		1,190.40
Nova Scotia		2016.12.23	2017.03.27		USD 3,000		3,606		1,202.00
KEB Hana Bank		2015.08.26	2017.07.31		JPY 630,000		6,377		10.12
BNP Paribas		2015.02.12	2017.01.10		IDR 6,567,882		USD 486		13,525.00
BNP Paribas		2015.02.12	2017.02.10		IDR 6,567,882		USD 486		13,525.00
BNP Paribas		2015.02.12	2017.03.10		IDR 6,567,882		USD 486		13,525.00
BNP Paribas		2015.02.12	2017.04.10		IDR 6,567,882		USD 486		13,525.00
BNP Paribas		2015.02.12	2017.05.10		IDR 6,567,882		USD 486		13,525.00
BNP Paribas		2015.02.12	2017.06.12		IDR 6,567,882		USD 486		13,525.00
BNP Paribas		2015.02.12	2017.07.10		IDR 6,567,882		USD 486		13,525.00
BNP Paribas		2015.02.12	2017.08.10		IDR 2,889,868		USD 214		13,525.00

(3) Currency swap contracts which are not designated as hedge instruments as of December 31, 2016 are as follows:

Counterparty	Contract year			Contract amount				Contract interest rate		Contract exchange rate
				Pay		Receive		Pay	Receive
	In millions of won and thousands of foreign currencies
Deutsche Bank		2013~2018	￦		110,412		JPY 10,000,000	6.21%	4.19%		11.04
IBK		2013~2018			111,800		USD 100,000	3.16%	2.79%		1,118.00
Bank of America		2013~2018			103,580		JPY 10,000,000	7.05%	4.19%		10.36
Credit Suisse		2014~2019			118,632		CHF 100,000	2.98%	1.50%		1,186.32
Standard Chartered		2014~2019			114,903		CHF 100,000	4.00%	1.50%		1,149.03
Standard Chartered		2014~2029			102,470		USD 100,000	3.14%	3.57%		1,024.70
Standard Chartered		2014~2017			51,215		USD 50,000	2.24%	3M Libor + 0.55%		1,024.30
Mizuho Bank		2014~2017			153,645		USD 150,000	2.35%	3M Libor + 0.65%		1,024.30
Societe Generale		2014~2024			105,017		USD 100,000	4.92%	5.13%		1,050.17
KEB Hana Bank		2015~2024			107,970		USD 100,000	4.75%	5.13%		1,079.70
Credit Agricole		2015~2024			94,219		USD 86,920	4.85%	5.13%		1,083.97
Citibank		2012~2022			112,930		USD 100,000	2.79%	3.00%		1,129.30
JP Morgan		2012~2022			112,930		USD 100,000	2.79%	3.00%		1,129.30
Bank of America		2012~2022			112,930		USD 100,000	2.79%	3.00%		1,129.30
Shinhan Bank		2016~2022			112,930		USD 100,000	2.79%	3.00%		1,129.30
HSBC		2012~2022			111,770		USD 100,000	2.89%	3.00%		1,117.70
KEB Hana Bank		2012~2022			111,770		USD 100,000	2.87%	3.00%		1,117.70
Standard Chartered		2012~2022			111,770		USD 100,000	2.89%	3.00%		1,117.70
Deutsche Bank		2012~2022			55,885		USD 50,000	2.79%	3.00%		1,117.70

F-68

Counterparty	Contract year			Contract amount				Contract interest rate		Contract exchange rate
				Pay		Receive		Pay	Receive
	In millions of won and thousands of foreign currencies
DBS		2013~2018	￦		108,140		USD 100,000	2.63%	3M Libor+0.84%		1,081.40
DBS		2013~2018			108,140		USD 100,000	2.57%	3M Libor+0.84%		1,081.40
DBS		2013~2018			108,140		USD 100,000	2.57%	3M Libor+0.84%		1,081.40
HSBC		2013~2018			107,450		USD 100,000	3.41%	2.88%		1,074.50
Standard Chartered		2013~2018			107,450		USD 100,000	3.44%	2.88%		1,074.50
JP Morgan		2013~2018			107,450		USD 100,000	3.48%	2.88%		1,074.50
Bank of America		2014~2018			107,450		USD 100,000	3.09%	2.88%		1,074.50
Citibank		2014~2018			107,450		USD 100,000	3.09%	2.88%		1,074.50
JP Morgan		2014~2017			102,670		USD 100,000	2.89%	3M Libor+0.78%		1,026.70
Deutsche Bank		2014~2017			102,670		USD 100,000	2.89%	3M Libor+0.78%		1,026.70
HSBC		2014~2019			105,260		USD 100,000	2.48%	2.38%		1,052.60
Standard Chartered		2014~2019			105,260		USD 100,000	2.48%	2.38%		1,052.60
Korea Development Bank		2016~2019			105,260		USD 100,000	2.48%	2.38%		1,052.60
Nomura		2015~2025			111,190		USD 100,000	2.60%	3.25%		1,111.90
Korea Development Bank		2015~2025			111,190		USD 100,000	2.62%	3.25%		1,111.90
Woori Bank		2015~2025			55,595		USD 50,000	2.62%	3.25%		1,111.90
KEB Hana Bank		2015~2025			55,595		USD 50,000	2.62%	3.25%		1,111.90

(4) Currency swap contracts which are designated as hedge instruments as of December 31, 2016 are as follows:

	Contract year			Contract amount				Contract interest rate		Contract exchange rate
Counterparty				Pay		Receive		Pay	Receive
	In millions of won and thousands of foreign currencies
Standard Chartered		2011~2017	￦		105,260		USD 100,000	3.99%	3.63%		1,052.60
Barclays Bank PLC		2011~2017			105,260		USD 100,000	3.99%	3.63%		1,052.60
Citibank		2011~2017			105,260		USD 100,000	3.99%	3.63%		1,052.60
Citibank		2013~2018			54,570		USD 50,000	2.90%	3M Libor+1.01%		1,091.40
Standard Chartered		2013~2018			54,570		USD 50,000	2.90%	3M Libor+1.01%		1,091.40
Credit Suisse		2013~2018			111,410		USD 100,000	3.22%	3M Libor+1.50%		1,114.10
HSBC		2014~2020			99,901		AUD 100,000	3.52%	5.75%		999.01
HSBC		2014~2020			100,482		AUD 100,000	3.48%	5.75%		1,004.82
Standard Chartered		2013~2020			USD 117,250		AUD 125,000	3M Libor+1.25%	5.75%		0.94
Standard Chartered		2014~2020			126,032		USD 117,250	3.55%	3M Libor+1.25%		1,074.90
JP Morgan		2014~2019			107,190		USD 100,000	3M Libor+3.25%	2.75%		1,071.90
Morgan Stanley		2014~2019			107,190		USD 100,000	3M Libor+3.25%	2.75%		1,071.90
Deutsche Bank		2014~2019			107,190		USD 100,000	3M Libor+3.25%	2.75%		1,071.90
Korea Development Bank		2016~2021			121,000		USD 100,000	2.15%	2.50%		1,210.00
Morgan Stanley		2016~2021			121,000		USD 100,000	3M Libor+2.10%	2.50%		1,210.00
BNP Paribas		2016~2021			121,000		USD 100,000	3M Libor+2.10%	2.50%		1,210.00
Morgan Stanley		2012~2017			285,000		USD 250,000	3.76%	3.13%		1,140.00
Credit Agricole		2012~2017			142,500		USD 125,000	3.83%	3.13%		1,140.00
JP Morgan		2012~2017			142,500		USD 125,000	3.83%	3.13%		1,140.00
Credit Agricole		2013~2019			118,343		CHF 100,000	3.47%	1.63%		1,183.43
Morgan Stanley		2013~2019			59,172		CHF 50,000	3.40%	1.63%		1,183.43
Nomura		2013~2019			59,172		CHF 50,000	3.47%	1.63%		1,183.43
Morgan Stanley		2013~2018			107,360		USD 100,000	3.27%	2.88%		1,073.60
Credit Agricole		2013~2018			107,360		USD 100,000	3.34%	2.88%		1,073.60
JP Morgan		2013~2018			161,040		USD 150,000	3.34%	2.88%		1,073.60
Standard Chartered		2013~2018			161,040		USD 150,000	3.34%	2.88%		1,073.60
Standard Chartered		2014~2019			104,490		USD 100,000	2.77%	2.63%		1,044.90
Credit Agricole		2014~2019			104,490		USD 100,000	2.77%	2.63%		1,044.90

F-69

	Contract year			Contract amount				Contract interest rate		Contract exchange rate
Counterparty				Pay		Receive		Pay	Receive
	In millions of won and thousands of foreign currencies
Morgan Stanley		2014~2019	￦		104,490		USD 100,000	2.70%	2.63%		1,044.90
Barclays Bank PLC		2013~2018			81,188		USD 75,000	2.65%	1.88%		1,082.50
Credit Agricole		2013~2018			81,188		USD 75,000	2.65%	1.88%		1,082.50
Deutsche Bank		2013~2018			81,188		USD 75,000	2.65%	1.88%		1,082.50
Citibank		2013~2018			81,188		USD 75,000	2.65%	1.88%		1,082.50
Standard Chartered		2014~2017			54,205		USD 50,000	2.93%	3M Libor+1.05%		1,084.10
Credit Agricole		2014~2017			54,205		USD 50,000	2.93%	3M Libor+1.05%		1,084.10
HSBC		2012~2017			115,140		USD 100,000	3.38%	2.50%		1,151.40
BNP Paribas		2012~2017			115,140		USD 100,000	3.38%	2.50%		1,151.40
KEB Hana Bank		2012~2017			115,140		USD 100,000	3.38%	2.50%		1,151.40
Barclays Bank PLC		2012~2017			57,570		USD 50,000	3.38%	2.50%		1,151.40
Standard Chartered		2012~2017			57,570		USD 50,000	3.38%	2.50%		1,151.40
Nomura		2012~2017			57,570		USD 50,000	3.38%	2.50%		1,151.40
Credit Agricole		2012~2017			57,570		USD 50,000	3.38%	2.50%		1,151.40
Societe Generale		2013~2018			106,190		USD 100,000	3.48%	2.63%		1,061.90
BNP Paribas		2013~2018			53,095		USD 50,000	3.48%	2.63%		1,061.90
KEB Hana Bank		2013~2018			53,095		USD 50,000	3.48%	2.63%		1,061.90
Standard Chartered		2013~2018			106,030		USD 100,000	3.48%	2.63%		1,060.30
Barclays Bank PLC		2013~2018			53,015		USD 50,000	3.48%	2.63%		1,060.30
KEB Hana Bank		2013~2018			31,809		USD 30,000	3.48%	2.63%		1,060.30
Societe Generale		2013~2018			21,206		USD 20,000	3.48%	2.63%		1,060.30
HSBC		2013~2018			53,015		USD 50,000	3.47%	2.63%		1,060.30
Nomura		2013~2018			53,015		USD 50,000	3.47%	2.63%		1,060.30
Credit Agricole		2014~2020			110,680		USD 100,000	2.29%	2.50%		1,106.80
Societe Generale		2014~2020			55,340		USD 50,000	2.16%	2.50%		1,106.80
KEB Hana Bank		2014~2020			55,340		USD 50,000	2.16%	2.50%		1,106.80
KEB Hana Bank		2014~2020			55,340		USD 50,000	2.21%	2.50%		1,106.80
Standard Chartered		2014~2020			55,340		USD 50,000	2.21%	2.50%		1,106.80
HSBC		2014~2020			55,340		USD 50,000	2.21%	2.50%		1,106.80
Nomura		2014~2020			55,340		USD 50,000	2.21%	2.50%		1,106.80
Barclays Bank PLC		2014~2020			55,340		USD 50,000	2.21%	2.50%		1,106.80
HSBC		2014~2020			55,340		USD 50,000	2.21%	2.50%		1,106.80

(5) Interest rate swap contracts which are not designated as hedge instruments as of December 31, 2016 are as follows:

Counterparty	Contract year		Contract amount		Contract interest rate per annum
					Pay	Receive
	In millions of won
Standard Chartered		2012~2017	￦	160,000	3.57%		3M CD + 0.32	%
JP Morgan		2013~2018		150,000	3.58%		3M CD + 0.31	%
Credit Suisse		2014~2018		200,000	2.98%		1Y CMT + 0.31	%
Korea Development Bank(*)		2014~2029		40,000	3M CD – 0.03%		4.65%
Export-Import Bank of Korea		2015~2031		USD 15,893	2.67%		6M USD Libor
ING Bank		2015~2031		USD 7,861	2.67%		6M USD Libor
BNP Paribas		2015~2031		USD 7,861	2.67%		6M USD Libor

(*) The contract is an interest rate swap hedging on Electricity Bonds 885, and the banks would notify the Company of the early termination every year on the early termination notification date (every year on April 28, from 2017 until 2028). The contract will be terminated if the early termination is notified.

F-70

(6) Interest rate swap contracts which are designated as hedge instruments as of December 31, 2016 are as follows:

Counterparty	Contract year		Contract amount		Contract interest rate per annum
					Pay	Receive
					In thousands of U.S. dollars
BNP Paribas		2009~2027		USD 94,790	4.16%		6M USD Libor
KFW		2009~2027		USD 94,790	4.16%		6M USD Libor
Credit Agricole		2016~2033		USD 99,694	3.98% ~ 4.10%		6M USD Libor
SMBC		2016~2033		USD 130,369	4.05% ~ 4.18%		6M USD Libor

(7) Gain and loss on valuation and transaction of derivatives for the years ended December 31, 2015 and 2016 are as follows and included in finance income and costs in the consolidated statements of comprehensive income (loss):

		Net income effects of valuation gain (loss)				Net income effects of transaction gain (loss)					Accumulated other comprehensive income (loss)(*)
		2015		2016		2015		2016			2015			2016
		In millions of won
Currency forward	￦		357		15,993		8,523		4,266			—			—
Currency swap			431,565		253,035		75,752		(68,266	)		(6,926	)		40,031
Interest rate swap			161,609		8,517		30,314		7,562			4,082			6,719
Other derivatives			—		10,523		—		—			—			—
	￦		593,531		288,068		114,589		(56,438	)		(2,844	)		46,750

(*) As of December 31, 2016, the net gain on valuation of derivatives using cash flow hedge accounting of ￦28,414 million, net of tax, is included in other comprehensive income or loss.

12. Other Financial Assets

(1) Other financial assets as of December 31, 2015 and 2016 are as follows:

		2015						2016
		Current			Non-current			Current			Non-current
		In millions of won
Loans and receivables	￦		106,013			678,126			198,133			683,353
Allowance for doubtful accounts			—			—			—			(4,532	)
Present value discount			(859	)		(48,223	)		(1,001	)		(41,746	)
Long / short-term financial instruments			5,132,829			758,037			2,281,460			414,466
	￦		5,237,983			1,387,940			2,478,592			1,051,541

F-71

(2) Loans and receivables as of December 31, 2015 and 2016 are as follows:

		2015
		Face value		Present value discount			Book value
		In millions of won
Short-term loans and receivables
Loans for tuition	￦		29,210		(859	)		28,351
Loans for housing			11,170		—			11,170
Fisheries loan			6,032		—			6,032
Other loans			59,601		—			59,601
			106,013		(859	)		105,154
Long-term loans and receivables
Loans for tuition			390,738		(47,822	)		342,916
Loans for housing			132,239		—			132,239
Loans for related parties			99,768		—			99,768
Fisheries loan			1,664		(401	)		1,263
Other loans			53,717		—			53,717
			678,126		(48,223	)		629,903
	￦		784,139		(49,082	)		735,057

		2016
		Face value		Allowance for doubtful accounts			Present value discount			Book value
		In millions of won
Short-term loans and receivables
Loans for tuition	￦		29,028		—			(1,001	)		28,027
Loans for housing			12,556		—			—			12,556
Fisheries loan			352		—			—			352
Other loans			156,197		—			—			156,197
			198,133		—			(1,001	)		197,132
Long-term loans and receivables
Loans for tuition			404,200		—			(41,593	)		362,607
Loans for housing			125,850		—			—			125,850
Loans for related parties			91,249		(4,532	)		—			86,717
Fisheries loan			1,312		—			(153	)		1,159
Other loans			60,742		—			—			60,742
			683,353		(4,532	)		(41,746	)		637,075
	￦		881,486		(4,532	)		(42,747	)		834,207

(3) Changes in the allowance for doubtful accounts of Loans and receivables for the year ended December 31, 2016 is as follows:

		2016
		In millions of won
Beginning balance	￦		—
Bad debt expense			4,352
Other			180
Ending balance	￦		4,532

F-72

(4) Long-term and short-term financial instruments as of December 31, 2015 and 2016 are as follows:

		2015				2016
		Current		Non-current		Current		Non-current
		In millions of won
Time deposits	￦		2,131,089		3		1,820,391		30,000
ABCP			2,598,791		5,000		351,800		132,600
CP			48,350		—		16,000		—
CD			163,649		—		60,443		—
RP			—		652,700		—		1,521
Others			190,950		100,334		32,826		250,345
	￦		5,132,829		758,037		2,281,460		414,466

13. Inventories

Inventories as of December 31, 2015 and 2016 are as follows:

		2015
		Acquisition cost		Valuation allowance			Book value
		In millions of won
Raw materials	￦		3,304,220		(1,238	)		3,302,982
Work-in-progress			133,226		—			133,226
Finished goods			51,073		—			51,073
Supplies			1,062,307		(4,428	)		1,057,879
Inventories in transit			392,340		—			392,340
Other inventories			8,913		—			8,913
	￦		4,952,079		(5,666	)		4,946,413

		2016
		Acquisition cost		Valuation allowance			Book value
		In millions of won
Raw materials	￦		3,182,711		(1,323	)		3,181,388
Merchandise			20		—			20
Work-in-progress			118,640		—			118,640
Finished goods			57,659		—			57,659
Supplies			1,289,160		(4,553	)		1,284,607
Inventories in transit			827,437		—			827,437
Other inventories			9,692		—			9,692
	￦		5,485,319		(5,876	)		5,479,443

The reversal of the allowance for loss on inventory valuation due to increase in the net realizable value of inventory deducted from cost of sales was ￦3,029 million for the year ended December 31, 2014. The allowance for loss on inventory valuation due to decrease in the net realizable value of inventory added to cost of sales was ￦533 million for the year ended December 31, 2015. The reversal of the allowance for loss on inventory valuation due to increase in the net realizable value of inventory deducted from cost of sales was ￦2,473 million for the year ended December 31, 2016. The amounts of loss from inventory valuation included in other gains or losses for the years ended December 31, 2014, 2015 and 2016 were ￦2,709 million, ￦1,318 million and ￦2,683 million, respectively.

F-73

14. Finance Lease Receivables

(1) Finance lease contracts

The Company entered into a power purchase agreement (“PPA”) with Jordan Electric Power Company to provide a 373MW level Qatrana gas combined power plant over a 25 year lease term, and accounts for the PPA as a finance lease. Also, the Company hasfly-ash pipe conduit finance leases with an average lease term of 7 years. In addition, the Company entered into a PPA with the Comision Federal de Electricidad in Mexico to provide for 25 years of all electricity generated from the power plant after completion of its construction and collect rates consisting of fixed costs (to recover the capital) and variable costs during the contracted period.

(2) Finance lease receivables as of December 31, 2015 and 2016 are as follows and included in current andnon-current trade and other receivables, net, in the consolidated statements of financial position:

		2015				2016
		Minimum lease payments		Present value of minimum lease payments		Minimum lease payments		Present value of minimum lease payments
		In millions of won
Less than 1 year	￦		98,488		12,098		55,708		12,225
1 ~ 5 years			407,426		203,699		423,152		214,176
More than 5 years			1,689,281		738,011		1,690,492		746,473
	￦		2,195,195		953,808		2,169,352		972,874

(3) There are no impaired finance lease receivables as of December 31, 2015 and 2016.

15. Non-Financial Assets

Non-financial assets as of December 31, 2015 and 2016 are as follows:

		2015				2016
		Current		Non-current		Current		Non-current
		In millions of won
Advance payment	￦		102,842		25,172		93,279		71,238
Prepaid expenses			159,378		85,105		228,142		78,066
Others(*)			135,730		20,956		310,439		32,485
	￦		397,950		131,233		631,860		181,789

(*) Details of others as of December 31, 2015 and 2016 are as follows:

		2015				2016
		Current		Non-current		Current		Non-current
		In millions of won
Tax refund receivables	￦		39,158		2,658		30,959		2,188
Greenhouse gas emissions rights			51,158		—		145,105		—
Others			45,414		18,298		134,375		30,297
	￦		135,730		20,956		310,439		32,485

F-74

16. Consolidated Subsidiaries

(1) Consolidated subsidiaries as of December 31, 2015 and 2016 are as follows:

			Percentage of ownership (%)
Subsidiaries	Key operation activities	Location	2015		2016
Korea Hydro & Nuclear Power Co., Ltd.	Power generation	KOREA		100.00%		100.00%
Korea South-East Power Co., Ltd.	Power generation	KOREA		100.00%		100.00%
Korea Midland Power Co., Ltd.	Power generation	KOREA		100.00%		100.00%
Korea Western Power Co., Ltd.	Power generation	KOREA		100.00%		100.00%
Korea Southern Power Co., Ltd.	Power generation	KOREA		100.00%		100.00%
Korea East-West Power Co., Ltd.	Power generation	KOREA		100.00%		100.00%
KEPCO Engineering & Construction Company, Inc.(*1)	Architectural engineering for utility plant and others	KOREA		66.32%		65.77%
KEPCO Plant Service & Engineering Co., Ltd.	Utility plant maintenance and others	KOREA		52.48%		51.00%
KEPCO Nuclear Fuel Co., Ltd.	Nuclear fuel	KOREA		96.36%		96.36%
KEPCO KDN Co., Ltd.	Electric power information technology and others	KOREA		100.00%		100.00%
Garolim Tidal Power Plant Co., Ltd.(*2)	Power generation	KOREA		49.00%		49.00%
KEPCO International HongKong Ltd.	Holding company	HONG KONG		100.00%		100.00%
KEPCO International Philippines Inc.	Holding company	PHILIPPINES		100.00%		100.00%
KEPCO Gansu International Ltd.	Holding company	HONG KONG		100.00%		100.00%
KEPCO Philippines Holdings Inc.	Holding company	PHILIPPINES		100.00%		100.00%
KEPCO Philippines Corporation	Operation of utility plant	PHILIPPINES		100.00%		100.00%
KEPCO Ilijan Corporation	Utility plant rehabilitation and operation	PHILIPPINES		51.00%		51.00%
KEPCO Lebanon SARL	Operation of utility plant	LEBANON		100.00%		100.00%
KEPCO Neimenggu International Ltd.	Holding company	HONG KONG		100.00%		100.00%
KEPCO Shanxi International Ltd.	Holding company	HONG KONG		100.00%		100.00%
KOMIPO Global Pte Ltd.	Holding company	SINGAPORE		100.00%		100.00%
KEPCO Canada Energy Ltd.	Resources development	CANADA		100.00%		100.00%
KEPCO Netherlands B.V.	Holding company	NETHERLANDS		100.00%		100.00%
KOREA Imouraren Uranium Investment Corp.	Resources development	FRANCE		100.00%		100.00%
KEPCO Australia Pty., Ltd.	Resources development	AUSTRALIA		100.00%		100.00%
KOSEP Australia Pty., Ltd.	Resources development	AUSTRALIA		100.00%		100.00%
KOMIPO Australia Pty., Ltd.	Resources development	AUSTRALIA		100.00%		100.00%
KOWEPO Australia Pty., Ltd.	Resources development	AUSTRALIA		100.00%		100.00%
KOSPO Australia Pty., Ltd.	Resources development	AUSTRALIA		100.00%		100.00%
KEPCO Middle East Holding Company	Holding company	BAHRAIN		100.00%		100.00%
Qatrana Electric Power Company	Construction and operation of utility plant	JORDAN		80.00%		80.00%
KHNP Canada Energy, Ltd.	Resources development	CANADA		100.00%		100.00%
KEPCO Bylong Australia Pty., Ltd.	Resources development	AUSTRALIA		100.00%		100.00%
Korea Waterbury Uranium Limited Partnership	Resources development	CANADA		79.64%		79.64%
KEPCO Canada Uranium Investment Limited Partnership	Resources development	CANADA		100.00%		—
Korea Electric Power Nigeria Ltd.	Operation of utility plant	NIGERIA		100.00%		100.00%
KEPCO Holdings de Mexico	Holding company	MEXICO		100.00%		100.00%
KST Electric Power Company	Construction and operation of utility plant	MEXICO		56.00%		56.00%
KEPCO Energy Service Company	Operation of utility plant	MEXICO		100.00%		100.00%
KEPCO Netherlands S3 B.V.	Holding company	NETHERLANDS		100.00%		100.00%

F-75

			Percentage of ownership (%)
Subsidiaries	Key operation activities	Location	2015		2016
PT. KOMIPO Pembangkitan Jawa Bali	Operation of utility plant	INDONESIA		51.00%		51.00%
PT. Cirebon Power Service(*2)	Operation of utility plant	INDONESIA		27.50%		27.50%
KOWEPO International Corporation	Operation of utility plant	PHILIPPINES		99.99%		99.99%
KOSPO Jordan LLC	Operation of utility plant	JORDAN		100.00%		100.00%
EWP Philippines Corporation	Operation of utility plant	PHILIPPINES		100.00%		100.00%
EWP America Inc.	Holding company	USA		100.00%		100.00%
EWP Renewable Co.	Holding company	USA		100.00%		100.00%
DG Fairhaven Power, LLC	Power generation	USA		100.00%		100.00%
DG Kings Plaza, LLC	Power generation	USA		100.00%		—
DG Whitefield, LLC	Power generation	USA		100.00%		100.00%
Springfield Power, LLC	Power generation	USA		100.00%		100.00%
KNF Canada Energy Limited	Resources development	CANADA		96.36%		96.36%
PT KEPCO Resource Indonesia	Holding company	INDONESIA		100.00%		100.00%
EWP Barbados 1 SRL	Holding company	BARBADOS		100.00%		100.00%
California Power Holdings, LLC	Power generation	USA		100.00%		100.00%
Gyeonggi Green Energy Co., Ltd.	Power generation	KOREA		62.01%		62.01%
PT. Tanggamus Electric Power	Power generation	INDONESIA		52.50%		52.50%
Gyeongju Wind Power Co., Ltd.	Power generation	KOREA		70.00%		70.00%
KOMIPO America Inc.	Holding company	USA		100.00%		100.00%
EWPRC Biomass Holdings, LLC	Holding company	USA		100.00%		100.00%
KOSEP USA, INC.	Power generation	USA		100.00%		100.00%
PT. EWP Indonesia	Holding company	INDONESIA		99.95%		99.95%
KEPCO Netherlands J3 B.V.	Holding company	NETHERLANDS		100.00%		100.00%
Korea Offshore Wind Power Co., Ltd.	Operation of utility plant	KOREA		100.00%		100.00%
Global One Pioneer B.V.	Holding company	NETHERLANDS		100.00%		100.00%
Global Energy Pioneer B.V.	Holding company	NETHERLANDS		100.00%		100.00%
Mira Power Limited(*3)	Power generation	PAKISTAN		76.00%		76.00%
KOSEP Material Co., Ltd.(*4)	Power generation	KOREA		46.22%		46.22%
Commerce and Industry Energy Co., Ltd.(*5)	Power generation	KOREA		59.03%		59.03%
KEPCO Singapore Holdings Pte., Ltd.	Holding company	SINGAPORE		100.00%		100.00%
KOWEPO India Private Limited	Holding company	INDIA		100.00%		100.00%
KEPCO KPS Philippines Corp.	Utility plant maintenance and others	PHILIPPINES		52.48%		51.00%
KOSPO Chile SpA	Holding company	CHILE		100.00%		100.00%
PT. KOWEPO Sumsel Operation and Maintenance Services	Utility plant maintenance and others	INDONESIA		95.00%		95.00%
HeeMang Sunlight Power Co., Ltd.	Power generation	KOREA		100.00%		100.00%
Fujeij Wind Power Company	Operation of utility plant	JORDAN		100.00%		100.00%
KOSPO Youngnam Power Co., Ltd.	Operation of utility plant	KOREA		50.00%		50.00%
Global One Carbon Private Equity Investment Trust 2	Holding company	KOREA		—		96.67%
Chitose Solar Power Plant LLC	Power generation	JAPAN		—		80.10%
KEPCO Energy Solution Co. Ltd.	Energy service	KOREA		—		100.00%
Solar School Plant Co., Ltd.	Power generation	KOREA		—		100.00%
KOSPO Power Services Limitada	Utility plant maintenance and others	CHILE		—		65.00%
Energy New Industry Specialized Investment Private Investment Trust	Holding company	KOREA		—		99.75%
KOEN Bylong Pty., Ltd.	Resources development	AUSTRALIA		—		100.00%
KOMIPO Bylong Pty., Ltd.	Resources development	AUSTRALIA		—		100.00%
KOWEPO Bylong Pty., Ltd.	Resources development	AUSTRALIA		—		100.00%
KOSPO Bylong Pty., Ltd.	Resources development	AUSTRALIA		—		100.00%
EWP Bylong Pty., Ltd.	Resources development	AUSTRALIA		—		100.00%
KOWEPO Lao International	Utility plant maintenance and others	LAOS		—		100.00%

F-76

(*1) Considering treasury stocks, the effective percentage of ownership is 66.08%.

(*2) These subsidiaries are included in the consolidated financial statements as the Company obtained the majority of the voting power through the shareholders’ agreement.

(*3) As of reporting date, the reporting period of all subsidiaries is December 31, except for Mira Power Limited which is November 30.

(*4) According to the shareholders’ agreement reached in April 2014, Korea South-East Power Co., Ltd. (“KOSEP”) signed a contract with Long Lasting Value (“LLV”) to guarantee the principal and certain rate of return on LLV’s shares in KOSEP Material Co., Ltd. Moreover, LLV has put options to sell their investment to KOSEP. Therefore, the Company accounted for this agreement as KOSEP acquiring the shares of KOSEP Material from LLV. As such, the effective percentage of ownership is 86.20% as of December 31, 2016.

(*5) The Company guarantees a certain return on investment related to Commerce and Industry Energy Co., Ltd. for the financial investors. The financial investors have a right to sell their shares to the Company which can be exercised 84 months after the date of investment. Accordingly, the purchase price including the return on investment is classified as a liability.

(2) Subsidiaries newly included in or excluded from consolidation for the year ended December 31, 2016 are as follows:

(i) Subsidiaries newly included in consolidation

Subsidiary	Reason
Global One Carbon Private Equity Investment Trust 2	Newly Established
Chitose Solar Power Plant LLC	Newly Established
KEPCO Energy Solution Co. Ltd.	Newly Established
Solar School Plant Co., Ltd.	Newly Established
KOSPO Power Services Limitada	Newly Established
Energy New Industry Specialized Investment Private Investment Trust	Newly Established
KOEN Bylong Pty., Ltd.	Newly Established
KOMIPO Bylong Pty., Ltd.	Newly Established
KOWEPO Bylong Pty., Ltd.	Newly Established
KOSPO Bylong Pty., Ltd.	Newly Established
EWP Bylong Pty., Ltd.	Newly Established
KOWEPO Lao International	Newly Established

(ii) Subsidiaries excluded from consolidation

Subsidiary	Reason
KEPCO Canada Uranium Investment Limited Partnership	Dissolved
DG Kings Plaza, LLC	Liquidated

F-77

(3) Summary of financial information of consolidated subsidiaries as of and for the years ended December 31, 2015 and 2016 are as follows:

2015
Subsidiaries		Total assets		Total liabilities		Sales		Profit (loss) for the period
		In millions of won
Korea Hydro & Nuclear Power Co., Ltd.	￦		51,043,890		27,386,113		10,642,352		2,465,244
Korea South-East Power Co., Ltd.			9,326,835		4,859,827		4,961,711		601,204
Korea Midland Power Co., Ltd.			7,857,199		4,648,144		3,927,443		226,244
Korea Western Power Co., Ltd.			9,225,791		5,719,032		4,214,540		294,617
Korea Southern Power Co., Ltd.			9,216,084		5,525,865		4,317,995		224,757
Korea East-West Power Co., Ltd.			8,828,603		4,836,904		4,047,655		454,942
KEPCO Engineering & Construction Company, Inc.			855,156		438,371		657,603		31,047
KEPCO Plant Service & Engineering Co., Ltd.			1,029,304		246,342		1,171,082		168,632
KEPCO Nuclear Fuel Co., Ltd.			666,677		328,364		253,524		35,115
KEPCO KDN Co., Ltd.			439,725		159,275		451,678		33,578
Garolim Tidal Power Plant Co., Ltd.			655		346		—		(76	)
KEPCO International HongKong Ltd.			172,686		18		—		4,993
KEPCO International Philippines Inc.			115,594		1,542		—		38,541
KEPCO Gansu International Ltd.			17,405		540		—		(6	)
KEPCO Philippines Holdings Inc.			132,094		26		—		24,690
KEPCO Philippines Corporation			13,998		218		—		265
KEPCO Ilijan Corporation			603,865		58,572		126,234		54,596
KEPCO Lebanon SARL			741		10,182		—		(1,541	)
KEPCO Neimenggu International Ltd.			184,860		348		—		8,027
KEPCO Shanxi International Ltd.			562,652		242,270		—		22,949
KOMIPO Global Pte Ltd.			187,885		29		—		16,572
KEPCO Canada Energy Ltd.			55,945		23		—		(64	)
KEPCO Netherlands B.V.			169,496		61		—		1,409
KOREA Imouraren Uranium Investment Corp.			224,499		263		—		5,964
KEPCO Australia Pty., Ltd.			510,892		2,541		4,510		168
KOSEP Australia Pty., Ltd.			18,180		1,581		4,729		346
KOMIPO Australia Pty., Ltd.			17,397		559		4,729		349
KOWEPO Australia Pty., Ltd.			18,320		1,578		4,729		353
KOSPO Australia Pty., Ltd.			18,358		1,567		4,729		356
KEPCO Middle East Holding Company			147,618		150,798		—		14,142
Qatrana Electric Power Company			521,206		412,587		17,844		31,767
KHNP Canada Energy, Ltd.			42,731		22		—		(123	)
KEPCO Bylong Australia Pty., Ltd.			183,468		236,545		—		(23,352	)
Korea Waterbury Uranium Limited Partnership			20,370		699		—		(48	)
KEPCO Canada Uranium Investment Limited Partnership			38,804		14		—		(26,171	)
Korea Electric Power Nigeria Ltd.			1,721		1,179		55,768		309
KEPCO Holdings de Mexico			39		34		—		(13	)
KST Electric Power Company			564,358		529,439		97,879		14,631
KEPCO Energy Service Company			1,435		604		6,034		875
KEPCO Netherlands S3 B.V.			66,251		189		—		716
PT. KOMIPO Pembangkitan Jawa Bali			16,536		6,170		20,143		8,047
PT. Cirebon Power Service			2,795		1,010		6,663		459
KOWEPO International Corporation			—		—		—		—
KOSPO Jordan LLC			12,998		1,117		9,840		2,693
EWP Philippines Corporation			2,664		1,592		—		258
EWP America Inc.(*)			115,562		82,167		59,124		3,227
KNF Canada Energy Limited			1,874		18		—		(66	)

F-78

2015
Subsidiaries		Total assets		Total liabilities		Sales		Profit (loss) for the period
		In millions of won
PT KEPCO Resource Indonesia	￦		1,210		—		—		(217	)
EWP Barbados 1 SRL			260,638		370		2,829		273
Gyeonggi Green Energy Co., Ltd.			315,299		249,608		104,674		(4,111	)
PT. Tanggamus Electric Power			106,892		91,416		60,044		(7,138	)
Gyeongju Wind Power Co., Ltd.			62,600		27,822		5,993		968
KOMIPO America Inc.			13,487		2,480		—		218
KOSEP USA, INC.			40,035		4,178		4,975		153
PT. EWP Indonesia			1,039		15		—		(374	)
KEPCO Netherlands J3 B.V.			121,492		81		—		18,858
Korea Offshore Wind Power Co., Ltd.			7,579		2,317		—		(4,213	)
Global One Pioneer B.V.			40		20		—		(48	)
Global Energy Pioneer B.V.			42		20		—		(48	)
Mira Power Limited			110,918		66,963		—		(1,581	)
KOSEP Material Co., Ltd.			29,768		28,013		26,310		(17,665	)
Commerce and Industry Energy Co., Ltd.			99,638		86,727		24,774		(3,387	)
KEPCO Singapore Holdings Pte., Ltd.			1,817		—		—		(9	)
KOWEPO India Private Limited			911		10		—		(105	)
KEPCO KPS Philippines Corp.			5,688		953		14,278		1,677
KOSPO Chile SpA			133		4,642		—		(942	)
PT. KOWEPO Sumsel Operation and Maintenance Services			2,053		51		5,405		1,762
HeeMang Sunlight Power Co., Ltd.			4,711		—		—		(9	)
Fujeij Wind Power Company			83		—		—		—
KOSPO Youngnam Power Co., Ltd.			82,173		32,166		—		7

(*) Financial information of EWP America Inc. includes that of seven other subsidiaries, EWP Renewable Co., DG Fairhaven Power, LLC, DG Kings Plaza, LLC, DG Whitefield, LLC, Springfield Power, LLC, California Power Holdings, LLC, and EWPRC Biomass Holdings, LLC.

F-79

2016
Subsidiaries		Total assets		Total liabilities		Sales		Profit (loss) for the period
		In millions of won
Korea Hydro & Nuclear Power Co., Ltd.	￦		52,782,915		27,366,938		11,168,579		2,454,810
Korea South-East Power Co., Ltd.			9,773,778		4,794,330		5,093,598		531,061
Korea Midland Power Co., Ltd.			9,066,666		5,416,336		3,719,981		400,696
Korea Western Power Co., Ltd.			9,810,714		5,866,916		4,169,712		401,936
Korea Southern Power Co., Ltd.			9,806,023		5,637,950		4,200,035		426,337
Korea East-West Power Co., Ltd.			8,967,951		4,488,911		4,210,898		467,603
KEPCO Engineering & Construction Company, Inc.			786,596		364,676		506,012		17,796
KEPCO Plant Service & Engineering Co., Ltd.			1,086,421		301,490		1,214,304		86,657
KEPCO Nuclear Fuel Co., Ltd.			713,230		346,012		309,911		33,115
KEPCO KDN Co., Ltd.			519,901		205,869		588,160		43,127
Garolim Tidal Power Plant Co., Ltd.			632		346		—		-24
KEPCO International HongKong Ltd.			173,138		41		—		4,532
KEPCO International Philippines Inc.			114,141		1,468		—		56,783
KEPCO Gansu International Ltd.			17,928		557		—		(18	)
KEPCO Philippines Holdings Inc.			125,100		27		—		13,517
KEPCO Philippines Corporation			13,704		8,949		—		(8,717	)
KEPCO Ilijan Corporation			558,030		58,449		116,667		51,552
KEPCO Lebanon SARL			1,458		10,312		—		810
KEPCO Neimenggu International Ltd.			186,636		—		—		7,082
KEPCO Shanxi International Ltd.			549,189		218,047		—		5,812
KOMIPO Global Pte Ltd.			223,082		1,095		—		36,764
KEPCO Canada Energy Ltd.			202		24		—		(27,216	)
KEPCO Netherlands B.V.			128,014		35		—		224
KOREA Imouraren Uranium Investment Corp.			154,302		764		—		(68,417	)
KEPCO Australia Pty., Ltd.			503,657		1,545		3,670		(19,006	)
KOSEP Australia Pty., Ltd.			25,174		521		5,357		4,028
KOMIPO Australia Pty., Ltd.			25,413		10		5,388		4,023
KOWEPO Australia Pty., Ltd.			25,550		10		5,357		4,012
KOSPO Australia Pty., Ltd.			25,625		10		5,357		4,033
KEPCO Middle East Holding Company			128,846		125,008		—		6,840
Qatrana Electric Power Company			546,123		417,800		18,866		19,601
KHNP Canada Energy, Ltd.			54,374		46		—		(6,304	)
KEPCO Bylong Australia Pty., Ltd.			220,721		277,358		—		(2,357	)
Korea Waterbury Uranium Limited Partnership			20,882		149		—		2,348
Korea Electric Power Nigeria Ltd.			696		493		9,794		35
KEPCO Holdings de Mexico			262		19		—		251
KST Electric Power Company			596,823		539,459		146,295		17,322
KEPCO Energy Service Company			1,309		310		5,337		580
KEPCO Netherlands S3 B.V.			55,609		54		—		3,731
PT. KOMIPO Pembangkitan Jawa Bali			16,246		4,549		21,632		8,989
PT. Cirebon Power Service			3,456		1,228		7,463		301
KOWEPO International Corporation			—		—		—		—
KOSPO Jordan LLC			11,524		687		7,321		317
EWP Philippines Corporation			1,966		955		—		(41	)
EWP America Inc.(*)			104,809		80,252		33,616		(8,704	)
KNF Canada Energy Limited			1,967		20		—		(46	)
PT KEPCO Resource Indonesia			913		18		—		(341	)
EWP Barbados 1 SRL			267,859		425		1,656		(902	)
Gyeonggi Green Energy Co., Ltd.			301,126		221,078		108,557		19,211
PT. Tanggamus Electric Power			184,861		167,641		40,903		2,041
Gyeongju Wind Power Co., Ltd.			76,569		49,293		6,413		1,269
KOMIPO America Inc.			11,518		2,432		—		(2,240	)
KOSEP USA, INC.			159		39,028		3,791		(72,817	)
PT. EWP Indonesia			2,154		50		—		1,088
KEPCO Netherlands J3 B.V.			125,337		68		—		12,433

F-80

2016
Subsidiaries		Total assets		Total liabilities		Sales		Profit (loss) for the period
		In millions of won
Korea Offshore Wind Power Co., Ltd.	￦		37,826		2,048		—		(4,960	)
Global One Pioneer B.V.			161		22		—		(54	)
Global Energy Pioneer B.V.			338		22		—		(59	)
Mira Power Limited			178,141		133,730		—		(954	)
KOSEP Material Co., Ltd.			2,398		1,497		3,232		(901	)
Commerce and Industry Energy Co., Ltd.			99,432		87,316		28,375		(536	)
KEPCO Singapore Holdings Pte., Ltd.			2,568		13		—		(33	)
KOWEPO India Private Limited			879		—		—		1
KEPCO KPS Philippines Corp.			7,897		1,213		12,843		2,060
KOSPO Chile SpA			6,656		4,787		—		125
PT. KOWEPO Sumsel Operation and Maintenance Services			1,439		700		6,165		(96	)
HeeMang Sunlight Power Co., Ltd.			7,102		3,391		12		(308	)
Fujeij Wind Power Company			47,935		46,636		—		(873	)
KOSPO Youngnam Power Co., Ltd.			284,368		205,680		—		(931	)
Global One Carbon Private Equity Investment Trust 2			3,002		—		—		9
Chitose Solar Power Plant LLC			49,728		38,806		—		(811	)
KEPCO Energy Solution Co. Ltd.			299,933		233		—		(300	)
Solar School Plant Co., Ltd.			200,268		259		1		9
KOSPO Power Services Limitada			4,385		1,262		7,300		2,963
Energy New Industry Specialized Investment Private Investment Trust			501,275		33		—		(7	)
KOEN Bylong Pty., Ltd.			6,135		—		—		—
KOMIPO Bylong Pty., Ltd.			6,135		—		—		—
KOWEPO Bylong Pty., Ltd.			6,135		—		—		—
KOSPO Bylong Pty., Ltd.			6,135		—		—		—
EWP Bylong Pty., Ltd.			6,135		—		—		—
KOWEPO Lao International			218		181		—		(108	)

(*) Financial information of EWP America Inc. includes that of six other subsidiaries, EWP Renewable Co., DG Fairhaven Power, LLC, DG Whitefield, LLC, Springfield Power, LLC, California Power Holdings, LLC, and EWPRC Biomass Holdings, LLC.

(4) Significant restrictions on abilities to subsidiaries are as follows:

Company	Nature and extent of any significant restrictions
Gyeonggi Green Energy Co., Ltd.	Acquisition or disposal of assets of more than ￦35 billion, change in the capacity of cogeneration units (except for the change due to performance improvement of equipment, maintenance) will require unanimous consent of all directors.
KOSPO Youngnam Power Co., Ltd.	Dividends can only be paid when all conditions of the loan agreement are satisfied or prior written consent of financial institutions is obtained. Shares cannot be wholly or partially transferred without prior written consent of financial institutions.

F-81

(5) Details ofnon-controlling interest prior to intra-group eliminations as of and for the years ended December 31, 2015 and 2016 are as follows:

2015
Description		KEPCO Ilijan Corporation			KEPCO Plant Service & Engineering Co., Ltd.			KEPCO Engineering & Construction Company, Inc.			Others			Total
		In millions of won
Percentage of ownership			49.00	%		47.52	%		33.37	%
Current assets	￦		161,855			547,152			341,559			631,442			1,682,008
Non-current assets			442,010			482,152			513,597			1,976,302			3,414,061
Current liabilities			(22,522	)		(195,030	)		(342,315	)		(296,152	)		(856,019	)
Non-current liabilities			(36,050	)		(51,312	)		(96,056	)		(1,566,200	)		(1,749,618	)
Net assets			545,293			782,962			416,785			745,392			2,490,432
Book value ofnon-controlling interest			267,194			372,064			139,081			644,787			1,423,126
Sales			126,234			1,171,082			657,603			637,544			2,592,463
Profit for the period			54,596			168,632			31,047			61,554			315,829
Profit for the period attributable tonon-controlling interest			26,752			78,852			10,360			11,802			127,766
Cash flows from operating activities			83,697			140,625			11,280			(29,888	)		205,714
Cash flows from investing activities			(16,021	)		(104,477	)		(134,874	)		(178,241	)		(433,613	)
Cash flows from financing activities before dividends tonon-controlling interest			(39,730	)		(40,581	)		69,955			226,976			216,620
Dividends tonon-controlling interest			(36,080	)		(34,569	)		(7,300	)		(24,577	)		(102,526	)
Effect of exchange rate fluctuation			4,123			3			(51	)		6,399			10,474
Net increase (decrease) of cash and cash equivalents			(4,011	)		(38,999	)		(60,990	)		669			(103,331	)

2016
Description		KEPCO Ilijan Corporation			KEPCO Plant Service & Engineering Co., Ltd.			KEPCO Engineering & Construction Company, Inc.			Others			Total
		In millions of won
Percentage of ownership			49.00	%		49.00	%		33.92	%
Current assets	￦		154,758			553,924			270,553			1,211,510			2,190,745
Non-current assets			403,272			532,497			516,043			2,379,882			3,831,694
Current liabilities			(19,256	)		(264,506	)		(286,444	)		(297,510	)		(867,716	)
Non-current liabilities			(39,193	)		(36,984	)		(78,232	)		(1,919,924	)		(2,074,333	)
Net assets			499,581			784,931			421,920			1,373,958			3,080,390
Book value ofnon-controlling interest			244,794			384,616			143,115			684,093			1,456,618
Sales			116,667			1,214,304			506,012			674,461			2,511,444
Profit for the period			51,552			86,657			17,796			102,170			258,175
Profit for the period attributable tonon-controlling interest			25,260			42,462			6,036			26,709			100,467
Cash flows from operating activities			102,546			121,240			18,748			84,086			326,620
Cash flows from investing activities			(117	)		79,807			(7,556	)		(367,674	)		(295,540	)
Cash flows from financing activities before dividends tonon-controlling interest			(56,863	)		(39,911	)		(1,634	)		877,863			779,455
Dividends tonon-controlling interest			(55,705	)		(36,139	)		(2,539	)		(22,054	)		(116,437	)
Effect of exchange rate fluctuation			1,529			127			(854	)		7,216			8,018
Net increase (decrease) of cash and cash equivalents			(8,610	)		125,124			6,165			579,437			702,116

F-82

(6) Changes in goodwill

(i) Details of goodwill as of December 31, 2015 and 2016 are as follows:

		2015		2016
		In millions of won
Acquisition cost	￦		2,582		2,582
Accumulated impairment			—		—
Carrying book value	￦		2,582		2,582

(ii) There are no changes in goodwill for the years ended December 31, 2015 and 2016.

(7) Disposals of subsidiaries

KEPCO Canada Uranium Investment Limited Partnership was dissolved and the Company liquidated DG Kings Plaza, LLC during the year ended December 31, 2016. The Company disposed of the shares of Boulder Solar Power, LLC and liquidated KOWEPO America LLC during the year ended December 31, 2015.

(i) The fair value of consideration as of December 31, 2015 and 2016 are as follows:

		2015		2016
		In millions of won
Consideration received in cash	￦		10,664		898
Fair value of remaining shares after disposal			13,860		—
Net assets transferred due to dissolution			—		34,148
	￦		24,524		35,046

(ii) The carrying value of assets and liabilities of subsidiaries as at the date the Company lost its control during the years ended December 31, 2015 and 2016 are as follows:

			2015			2016
			In millions of won
Current assets
Cash and cash equivalents	￦			10,071			898
Current financial assets, net				1,077			81
Non-current assets
Available-for-sale financial assets				—			34,089
Property, plant and equipment, net				2,460			—
Other				2,893			—
Current liabilities
Current financial liabilities				—			(22	)
Currentnon-financial liabilities				(7	)		—
		￦		16,494			35,046

F-83

(iii) Gain from disposals of subsidiaries for the years ended December 31, 2015 and 2016 are as follows:

		2015			2016
		In millions of won
Fair value of sale price	￦		24,524			35,046
Net assets disposed			(16,494	)		(35,046	)
Non-controlling interests			—			—
Realization of unrealized gain			—			—
Other comprehensive income(*1)			346			—
Gain from disposals of subsidiaries(*2)	￦		8,376			—

(*1) This represents the amount subsequently reclassified from other comprehensive income to profit for the period when the Company lost its control of the subsidiaries.

(*2) Gain from disposals of subsidiaries is included in the consolidated financial statements of comprehensive income.

(iv) Net cash flow from sales of subsidiaries for the years ended December 31, 2015 and 2016 are as follows:

		2015			2015
		In millions of won
Consideration received in cash	￦		10,664			898
Less: cash held by disposed subsidiaries			(10,071	)		(898	)
Net cash flow	￦		593			—

F-84

(8) Cash dividends received from subsidiaries for the years ended December 31, 2014, 2015 and 2016, respectively, are as follows:

Subsidiaries		2014		2015		2016
		In millions of won
Korea Hydro & Nuclear Power Co., Ltd.	￦		—		446,399		635,200
Korea South-East Power Co., Ltd.			34,800		57,485		124,169
Korea Midland Power Co., Ltd.			12,244		16,580		23,073
Korea Western Power Co., Ltd.			32,048		22,749		36,238
Korea Southern Power Co., Ltd.			30,800		10,272		17,849
Korea East-West Power Co., Ltd.			8,100		25,280		67,906
KEPCO Engineering & Construction Company, Inc.			10,996		14,574		5,069
KEPCO Plant Service & Engineering Co., Ltd.			43,095		40,584		39,911
KEPCO Nuclear Fuel Co., Ltd.			5,936		6,280		3,411
KEPCO KDN Co., Ltd.			3,424		4,046		3,392
Korea Engineering & Power Services Co., Ltd.			1,573		—		—
KEPCO International HongKong Ltd.			74,927		25,826		9,107
KEPCO International Philippines Inc.			100,122		32,891		61,862
KEPCO Ilijan Corporation			101,647		38,128		57,979
KEPCO Philippines Holdings Inc.			2,811		19,221		17,747
KEPCO Neimenggu International Ltd.			6,308		25,338		10,735
KOMIPO Global Pte Ltd.			—		—		10,432
Qatrana Electric Power Company			—		16,857		8,331
KOSPO Jordan LLC			446		—		1,095
KEPCO Energy Service Company			—		—		294
EWP Philippines Corporation			—		5,586		—
KEPCO Netherlands S3 B.V.			—		1,382		—
PT. KOMIPO Pembangkitan Jawa Bali			2,827		3,169		3,222
KEPCO Netherlands J3 B.V.			—		19,254		12,507
Gyeongju Wind Power Co., Ltd.			651		1,294		679
	￦		472,755		833,195		1,150,208

F-85

17. Investments in Associates and Joint Ventures

(1) Investments in associates and joint ventures as of December 31, 2015 and 2016 are as follows:

2015
Investees	Key operation activities	Location	Percentage of ownership				Acquisition cost			Book value
							In millions of won
<Associates>
Daegu Green Power Co., Ltd.	Power generation	KOREA		47.80	%	￦		76,193			80,267
Korea Gas Corporation(*1)	Importing and wholesaling LNG	KOREA		20.47	%			94,500			2,102,813
Korea Electric Power Industrial Development Co., Ltd.	Electricity metering and others	KOREA		29.00	%			4,727			18,994
YTN Co., Ltd.	Broadcasting	KOREA		21.43	%			59,000			38,365
Cheongna Energy Co., Ltd.	Generating and distributing vapor and hot/cold water	KOREA		43.90	%			48,353			19,490
Gangwon Wind Power Co., Ltd.(*2)	Power generation	KOREA		15.00	%			5,725			12,890
Hyundai Green Power Co., Ltd.	Power generation	KOREA		29.00	%			88,885			113,664
Korea Power Exchange(*6)	Management of power market and others	KOREA		100.00	%			127,839			208,735
AMEC Partners Korea Ltd.(*3)	Resources development	KOREA		19.00	%			707			230
Hyundai Energy Co., Ltd.(*9)	Power generation	KOREA		30.66	%			30,118			6,990
Ecollite Co., Ltd.	Artificial light-weight aggregate	KOREA		36.10	%			1,516			—
Taebaek Wind Power Co., Ltd.	Power generation	KOREA		25.00	%			3,810			4,956
Taeback Guinemi Wind Power Co., Ltd. (formerly, Muju Wind Power Co., Ltd.)	Power generation	KOREA		25.00	%			2,850			2,587
Pyeongchang Wind Power Co., Ltd.	Power generation	KOREA		25.00	%			3,875			3,402
Daeryun Power Co., Ltd.(*3, 10)	Power generation	KOREA		13.13	%			25,477			36,156
JinanJangsu Wind Power Co., Ltd.	Power generation	KOREA		25.00	%			100			77
Changjuk Wind Power Co., Ltd.	Power generation	KOREA		30.00	%			3,801			6,143
KNH Solar Co., Ltd.	Power generation	KOREA		27.00	%			1,296			1,924
SPC Power Corporation	Power generation	PHILIPPINES		38.00	%			20,635			58,033
Gemeng International Energy Co., Ltd.	Power generation	CHINA		34.00	%			413,153			728,396
PT. Cirebon Electric Power	Power generation	INDONESIA		27.50	%			40,365			60,574
KNOC Nigerian East Oil Co., Ltd.(*4)	Resources development	NIGERIA		14.63	%			12			—
KNOC Nigerian West Oil Co., Ltd.(*4)	Resources development	NIGERIA		14.63	%			12			—
Dolphin Property Limited(*4)	Rental company	NIGERIA		15.00	%			12			61
PT Wampu Electric Power	Power generation	INDONESIA		46.00	%			21,292			18,963
PT. Bayan Resources TBK	Resources development	INDONESIA		20.00	%			615,860			525,066
S-Power Co., Ltd.	Power generation	KOREA		49.00	%			132,300			130,908
Pioneer Gas Power Limited(*8)	Power generation	INDIA		40.00	%			49,831			51,187
Eurasia Energy Holdings	Power generation and resources development	RUSSIA		40.00	%			461			—
Xe-PianXe-Namnoy Power Co., Ltd.	Power generation	LAOS		25.00	%			32,717			31,863
Busan Solar Co., Ltd.(*3)	Power generation	KOREA		19.80	%			793			925
Hadong Mineral Fiber Co., Ltd.	Recycling fly ashes	KOREA		25.00	%			50			—
Green Biomass Co., Ltd.(*12)	Power generation	KOREA		14.00	%			714			—
PT. Mutiara Jawa	Manufacturing and operating floating coal terminal	INDONESIA		29.00	%			2,978			—
Samcheok Eco Materials Co., Ltd.(*3, 11)	Recycling fly ashes	KOREA		2.67	%			686			—
Noeul Green Energy Co., Ltd.	Power generation	KOREA		20.00	%			400			295
Naepo Green Energy Co., Ltd.	Power generation	KOREA		25.00	%			29,200	��		26,746
Goseong Green Energy Co., Ltd.(*2)	Power generation	KOREA		2.90	%			2,900			2,670
Gangneung Eco Power Co., Ltd.(*2)	Power generation	KOREA		3.72	%			2,900			2,688
Shin Pyeongtaek Power Co., Ltd.	Power generation	KOREA		40.00	%			40			—
Heang Bok Do Si Photovoltaic Power Co., Ltd.	Power generation	KOREA		28.00	%			194			189
DS POWER Co., Ltd.(*2)	Power generation	KOREA		14.44	%			17,900			10,960

F-86

2015
Investees	Key operation activities	Location	Percentage of ownership				Acquisition cost		Book value
							In millions of won
Dongducheon Dream Power Co., Ltd.	Power generation	KOREA		33.61	%	￦		61,535		55,667
KS Solar Co., Ltd.(*3)	Power generation	KOREA		19.00	%			637		618
Yeongwol Energy Station Co., Ltd.(*2)	Power generation	KOREA		10.00	%			1,400		1,290
Jinbhuvish Power Generation Pvt. Ltd.(*2)	Power generation	INDIA		5.16	%			9,000		8,350
SE Green Energy Co., Ltd.	Power generation	KOREA		47.76	%			3,821		3,575
Daegu Photovoltaic Co., Ltd.	Power generation	KOREA		29.00	%			1,230		1,886
Jeongam Wind Power Co., Ltd.	Power generation	KOREA		40.00	%			1,680		702
Korea Power Engineering Service Co., Ltd.	Construction and service	KOREA		29.00	%			290		1,805
Busan Green Energy Co., Ltd.	Power generation	KOREA		29.00	%			14,564		14,512
Jungbu Bio Energy Co., Ltd.(*2)	Power generation	KOREA		18.87	%			1,000		904
Korea Electric Vehicle Charging Service	Electric vehicle charge service	KOREA		28.00	%			1,596		1,446
Ulleungdo Natural Energy Co., Ltd.	Renewable power generation	KOREA		29.85	%			8,000		7,417
Korea Nuclear Partners Co., Ltd.	Electric material agency	KOREA		29.00	%			290		289
								2,069,220		4,405,668
<Joint ventures>
KEPCO-Uhde Inc.(*7)	Power generation	KOREA		52.80	%			11,355		8,549
Eco Biomass Energy Sdn. Bhd.(*7)	Power generation	MALAYSIA		61.53	%			9,661		—
Datang Chaoyang Renewable Power Co., Ltd.	Power generation	CHINA		40.00	%			27,660		27,640
Shuweihat Asia Power Investment B.V.	Holding company	NETHERLANDS		49.00	%			60,191		20,474
Shuweihat Asia Operation & Maintenance Company(*7)	Maintenance of utility plant	CAYMAN		55.00	%			30		486
Waterbury Lake Uranium L.P.	Resources development	CANADA		40.00	%			26,602		20,299
ASM-BG Investicii AD	Power generation	BULGARIA		50.00	%			16,101		20,203
RES Technology AD	Power generation	BULGARIA		50.00	%			15,595		13,789
KV Holdings, Inc.	Power generation	PHILIPPINES		40.00	%			2,103		2,010
KEPCO SPC Power Corporation(*7)	Construction and operation of utility plant	PHILIPPINES		75.20	%			94,579		208,524
Canada Korea Uranium Limited Partnership(*5)	Resources development	CANADA		12.50	%			5,404		—
KEPCO Energy Resource Nigeria Limited	Holding company	NIGERIA		30.00	%			8,463		—
Gansu Datang Yumen Wind Power Co., Ltd.	Power generation	CHINA		40.00	%			16,621		16,107
Datang Chifeng Renewable Power Co., Ltd.	Power generation	CHINA		40.00	%			121,928		171,224
Datang KEPCO Chaoyang Renewable Power Co., Ltd.	Power generation	CHINA		40.00	%			10,858		10,580
Rabigh Electricity Company	Power generation	SAUDI ARABIA		40.00	%			109,743		59,368
Rabigh Operation & Maintenance Company	Maintenance of utility plant	SAUDI ARABIA		40.00	%			70		3,586
Jamaica Public Service Company Limited	Power generation	JAMAICA		40.00	%			301,910		241,918
KW Nuclear Components Co., Ltd.	Manufacturing	KOREA		45.00	%			833		4,985
Busan Shinho Solar Power Co., Ltd.	Power generation	KOREA		25.00	%			2,100		3,678
GS Donghae Electric Power Co., Ltd.	Power generation	KOREA		34.00	%			204,000		200,379
Global Trade Of Power System Co., Ltd.	Exporting products and technology of small or medium business by proxy	KOREA		29.00	%			290		426

F-87

2015
Investees	Key operation activities	Location	Percentage of ownership				Acquisition cost		Book value
							In millions of won
Expressway Solar-light Power Generation Co., Ltd.	Power generation	KOREA		29.00	%	￦		1,856		2,100
KODE NOVUS I LLC	Power generation	USA		50.00	%			19,213		—
KODE NOVUS II LLC	Power generation	USA		49.00	%			12,498		—
Daejung Offshore Wind Power Co., Ltd.	Power generation	KOREA		49.90	%			4,990		3,352
Amman Asia Electric Power Company(*7)	Power generation	JORDAN		60.00	%			111,476		137,668
KAPES, Inc. (formerly, KEPCO-ALSTOM Power Electronics Systems, Inc.)(*7)	R&D	KOREA		51.00	%			5,629		4,501
Dangjin Eco Power Co., Ltd.	Power generation	KOREA		34.00	%			51,000		48,281
Honam Wind Power Co., Ltd.	Power generation	KOREA		29.00	%			3,480		3,926
Nepal Water & Energy Development Company Private Limited(*7)	Construction and operation of utility plant	NEPAL		52.77	%			18,568		17,765
Chun-cheon Energy Co., Ltd.	Power generation	KOREA		29.90	%			32,868		31,976
Yeonggwangbaeksu Wind Power Co., Ltd.(*3)	Power generation	KOREA		15.00	%			3,000		2,668
Nghi Son 2 Power Ltd.	Power generation	VIETNAM		50.00	%			1,072		269
Kelar S.A(*7)	Power generation	CHILE		65.00	%			4,180		—
PT. Tanjung Power Indonesia	Power generation	INDONESIA		35.00	%			746		617
Incheon New Power Co., Ltd.	Power generation	KOREA		29.00	%			461		514
Seokmun Energy Co., Ltd.	Power generation	KOREA		29.00	%			580		—
								1,317,714		1,287,862
						￦		3,386,934		5,693,530

(*1) The effective percentage of ownership is 21.57% considering treasury stocks.

(*2) The Company can exercise significant influence by virtue of its contractual right to appoint directors to the board of directors of the entity, and by strict decision criteria of the Company’s financial and operating policy of the board of directors.

(*3) The Company can exercise significant influence by virtue of its contractual right to appoint a director to the board of directors of the entity.

(*4) The Company can exercise significant influence by virtue of its contractual right to appoint one out of four members of the steering committee of the entity. Moreover, the Company has significant financial transactions, which can affect its influence on the entity.

(*5) The Company has joint control over the entity by virtue of its contractual right to appoint directors to the board of directors of the entity, and by strict decision criteria of the Company’s financial and operating policy of the board of directors.

(*6) The Government regulates the Company’s ability to make operating and financial decisions over the entity, as the Government requires maintaining arms-length transactions between KPX and the Company’s other subsidiaries. The Company can exercise significant influence by its right to nominate directors to the board of directors of the entity.

(*7) According to the shareholders’ agreement, all critical financial and operating decisions must be agreed to by all ownership parties. For these reasons, the entities are classified as joint ventures.

(*8) As of reporting date, the reporting period of all associates and joint ventures ends in December 31, except for Pioneer Gas Power Limited whose reporting period ends on March 31.

(*9) As of December 31, 2015, 15.64% of ownership of Hyundai Energy Co., Ltd. is held by NH Power II Co., Ltd. and NH Bank. According to the shareholders’ agreement reached on March 2011, not only does the Company have a call option to acquire the investment in Hyundai Energy Co., Ltd. from NH Power II Co., Ltd. and NH Bank with a certain rate of return, NH Power II Co., Ltd. and NH Bank also have put options to dispose of their investment to the Company. In connection with this agreement, the Company applied the equity method on the investment in Hyundai Energy Co., Ltd. with 46.30% of ownership.

(*10) The Company’s percentage of ownership has decreased due to the acquisition of Daeryun Power Co., Ltd. and the effective percentage of ownership is 19.45% considering stock purchase options.

(*11) The Company’s effective percentage of ownership excluding the redeemable convertible preferred stock is 25.54%.

(*12) The effective percentage of ownership is less than 20% but the Company can exercise significant influence by virtue of its contractual right to appoint a director to the board of directors of the entity and the fact that the dominant portion of the investee’s sales transactions is generated from the Company.

F-88

2016
Investees	Key operation activities	Location	Percentage of ownership				Acquisition cost		Book value
							In millions of won
<Associates>
Korea Gas Corporation(*1)	Importing and wholesaling LNG	KOREA		20.47	%	￦		94,500		1,933,877
Korea Electric Power Industrial Development Co., Ltd.	Electricity metering and others	KOREA		29.00	%			4,727		20,475
YTN Co., Ltd.	Broadcasting	KOREA		21.43	%			59,000		38,156
Cheongna Energy Co., Ltd.	Generating and distributing vapor and hot/cold water	KOREA		43.90	%			48,353		12,373
Gangwon Wind Power Co., Ltd.(*2)	Power generation	KOREA		15.00	%			5,725		13,069
Hyundai Green Power Co., Ltd.	Power generation	KOREA		29.00	%			88,885		115,998
Korea Power Exchange(*6)	Management of power market and others	KOREA		100.00	%			127,839		223,238
AMEC Partners Korea Ltd.(*3)	Resources development	KOREA		19.00	%			707		225
Hyundai Energy Co., Ltd.(*9)	Power generation	KOREA		30.66	%			71,070		1,031
Ecollite Co., Ltd.	Artificial light-weight aggregate	KOREA		36.10	%			1,516		—
Taebaek Wind Power Co., Ltd.	Power generation	KOREA		25.00	%			3,810		4,750
Taeback Guinemi Wind Power Co., Ltd. (formerly, Muju Wind Power Co., Ltd.)	Power generation	KOREA		25.00	%			3,420		3,131
Pyeongchang Wind Power Co., Ltd.	Power generation	KOREA		25.00	%			3,875		3,383
Daeryun Power Co., Ltd.(*3, 10)	Power generation	KOREA		13.13	%			25,477		29,873
Changjuk Wind Power Co., Ltd.	Power generation	KOREA		30.00	%			3,801		6,930
KNH Solar Co., Ltd.	Power generation	KOREA		27.00	%			1,296		2,073
SPC Power Corporation	Power generation	PHILIPPINES		38.00	%			20,635		56,818
Gemeng International Energy Co., Ltd.	Power generation	CHINA		34.00	%			413,153		680,065
PT. Cirebon Electric Power	Power generation	INDONESIA		27.50	%			40,365		96,658
KNOC Nigerian East Oil Co., Ltd.(*4)	Resources development	NIGERIA		14.63	%			12		—
KNOC Nigerian West Oil Co., Ltd.(*4)	Resources development	NIGERIA		14.63	%			12		—
PT Wampu Electric Power	Power generation	INDONESIA		46.00	%			21,292		23,188
PT. Bayan Resources TBK	Resources development	INDONESIA		20.00	%			615,860		402,667
S-Power Co., Ltd.	Power generation	KOREA		49.00	%			132,300		123,912
Pioneer Gas Power Limited(*8)	Power generation	INDIA		40.00	%			49,831		50,740
Eurasia Energy Holdings	Power generation and resources development	RUSSIA		40.00	%			461		—
Xe-PianXe-Namnoy Power Co., Ltd.	Power generation	LAOS		25.00	%			49,119		51,544
Hadong Mineral Fiber Co., Ltd.(*17)	Recycling fly ashes	KOREA		8.33	%			50		—
Green Biomass Co., Ltd.(*12)	Power generation	KOREA		14.00	%			714		47
PT. Mutiara Jawa	Manufacturing and operating floating coal terminal	INDONESIA		29.00	%			2,978		—
Samcheok Eco Materials Co., Ltd.(*3, 11)	Recycling fly ashes	KOREA		2.35	%			686		—
Noeul Green Energy Co., Ltd.	Power generation	KOREA		29.00	%			1,740		1,217
Naepo Green Energy Co., Ltd.	Power generation	KOREA		25.00	%			29,200		25,438
Goseong Green Energy Co., Ltd.(*2)	Power generation	KOREA		1.12	%			2,900		2,663
Gangneung Eco Power Co., Ltd.(*2)	Power generation	KOREA		1.61	%			2,900		2,646
Shin Pyeongtaek Power Co., Ltd.	Power generation	KOREA		40.00	%			40		—
Heang Bok Do Si Photovoltaic Power Co., Ltd.	Power generation	KOREA		28.00	%			194		181
DS POWER Co., Ltd.(*2)	Power generation	KOREA		14.44	%			17,900		7,190
Dongducheon Dream Power Co., Ltd.	Power generation	KOREA		33.61	%			61,535		46,876
KS Solar Co., Ltd.(*3)	Power generation	KOREA		19.00	%			637		604
Yeongwol Energy Station Co., Ltd.(*2)	Power generation	KOREA		10.00	%			1,400		—
Jinbhuvish Power Generation Pvt. Ltd.(*2)	Power generation	INDIA		5.16	%			9,000		—
SE Green Energy Co., Ltd.	Power generation support	KOREA		47.76	%			3,821		3,525
Daegu Photovoltaic Co., Ltd.	Power generation	KOREA		29.00	%			1,230		1,700
Jeongam Wind Power Co., Ltd.	Power generation	KOREA		40.00	%			5,580		4,000
Korea Power Engineering Service Co., Ltd.	Construction and service	KOREA		29.00	%			290		2,810
Busan Green Energy Co., Ltd.	Power generation	KOREA		29.00	%			14,564		13,803
Jungbu Bio Energy Co., Ltd.(*2)	Power generation	KOREA		18.87	%			1,000		—

F-89

2016
Investees	Key operation activities	Location	Percentage of ownership				Acquisition cost		Book value
							In millions of won
Korea Electric Vehicle Charging Service	Electric vehicle charge service	KOREA		28.00	%	￦		1,596		1,103
Ulleungdo Natural Energy Co., Ltd.	Renewable power generation	KOREA		29.85	%			8,000		6,894
Korea Nuclear Partners Co., Ltd.	Electric material agency	KOREA		29.00	%			290		248
Tamra Offshore Wind Power Co., Ltd.	Power generation	KOREA		27.00	%			8,910		7,015
Korea Electric Power Corporation Fund(*13)	Developing electric enterprises	KOREA		98.09	%			51,500		50,856
Energy Infra Asset Management Co., Ltd.(*3)	Asset management	KOREA		9.90	%			297		259
Daegu clean Energy Co., Ltd.	Renewable power generation	KOREA		28.00	%			140		140
YaksuESS Co., Ltd	Installing ESS related equipment	KOREA		29.00	%			210		196
Nepal Water & Energy Development Company Private Limited(*14)	Construction and operation of utility plant	NEPAL		52.77%				18,568		18,667
								2,134,911		4,092,252
<Joint ventures>
KEPCO-Uhde Inc.(*7)	Power generation	KOREA		52.8	%			11,355		301
Eco Biomass Energy Sdn. Bhd.(*7)	Power generation	MALAYSIA		61.53	%			9,661		—
Datang Chaoyang Renewable Power Co., Ltd.	Power generation	CHINA		40.00	%			27,660		28,239
Shuweihat Asia Power Investment B.V.	Holding company	NETHERLANDS		49.00	%			46,037		—
Shuweihat Asia Operation & Maintenance Company(*7)	Maintenance of utility plant	CAYMAN		55.00	%			30		450
Waterbury Lake Uranium L.P.	Resources development	CANADA		36.97	%			26,602		21,314
ASM-BG Investicii AD	Power generation	BULGARIA		50.00	%			16,101		21,488
RES Technology AD	Power generation	BULGARIA		50.00	%			15,595		13,582
KV Holdings, Inc.	Power generation	PHILIPPINES		40.00	%			2,103		2,098
KEPCO SPC Power Corporation(*7)	Construction and operation of utility plant	PHILIPPINES		75.20	%			94,579		245,367
Canada Korea Uranium Limited Partnership(*5)	Resources development	CANADA		12.50	%			5,404		—
Gansu Datang Yumen Wind Power Co., Ltd.	Power generation	CHINA		40.00	%			16,621		12,821
Datang Chifeng Renewable Power Co., Ltd.	Power generation	CHINA		40.00	%			121,928		166,535
Datang KEPCO Chaoyang Renewable Power Co., Ltd.	Power generation	CHINA		40.00	%			10,858		10,843
Rabigh Electricity Company	Power generation	SAUDI ARABIA		40.00	%			109,743		97,802
Rabigh Operation & Maintenance Company	Maintenance of utility plant	SAUDI ARABIA		40.00	%			70		4,427
Jamaica Public Service Company Limited	Power generation	JAMAICA		40.00	%			301,910		249,453
KW Nuclear Components Co., Ltd.	Manufacturing	KOREA		45.00	%			833		7,133
Busan Shinho Solar Power Co., Ltd.	Power generation	KOREA		25.00	%			2,100		3,814
GS Donghae Electric Power Co., Ltd.	Power generation	KOREA		34.00	%			204,000		205,948
Global Trade Of Power System Co., Ltd.	Exporting products and technology of small or medium business by proxy	KOREA		29.00	%			290		477
Expressway Solar-light Power Generation Co., Ltd.	Power generation	KOREA		29.00	%			1,856		2,343
KODE NOVUS I LLC	Power generation	USA		50.00	%			19,213		—
KODE NOVUS II LLC	Power generation	USA		50.00	%			12,756		—
Daejung Offshore Wind Power Co., Ltd.	Power generation	KOREA		49.90	%			4,990		3,015

F-90

2016
Investees	Key operation activities	Location	Percentage of ownership				Acquisition cost		Book value
							In millions of won
Amman Asia Electric Power Company(*7)	Power generation	JORDAN		60.00	%	￦		111,476		153,857
KAPES, Inc. (formerly, KEPCO-ALSTOM Power Electronics Systems, Inc.)(*7)	R&D	KOREA		51.00	%			5,629		4,758
Dangjin Eco Power Co., Ltd.	Power generation	KOREA		34.00	%			56,100		53,253
Honam Wind Power Co., Ltd.	Power generation	KOREA		29.00	%			3,480		4,451
Chun-cheon Energy Co., Ltd.	Power generation	KOREA		29.90	%			52,700		50,592
Yeonggwangbaeksu Wind Power Co., Ltd.(*3)	Power generation	KOREA		15.00	%			3,000		2,689
Nghi Son 2 Power Ltd.	Power generation	VIETNAM		50.00	%			1,788		229
Kelar S.A(*7)	Power generation	CHILE		65.00	%			4,180		—
PT. Tanjung Power Indonesia	Power generation	INDONESIA		35.00	%			746		1,946
Incheon New Power Co., Ltd.	Power generation	KOREA		29.00	%			461		563
Seokmun Energy Co., Ltd.	Power generation	KOREA		29.00	%			580		391
Daehan Wind Power PSC	Power generation	JORDAN		50.00	%			285		16
Barakah One Company(*16)	Power generation	UAE		18.00	%			118		116
Nawah Energy Company(*16)	Operation of utility plant	UAE		18.00	%			296		290
MOMENTUM	International thermonuclear experimental reactor construction management	FRANCE		33.33	%			1		67
Daegu Green Power Co., Ltd.(*15)	Power generation	KOREA		29.00	%			46,225		47,528
								1,349,360		1,418,196
						￦		3,484,271		5,510,448

(*1) The effective percentage of ownership is 21.57% considering treasury stocks.

(*2) The Company can exercise significant influence by virtue of its contractual right to appoint directors to the board of directors of the entity, and by strict decision criteria of the Company’s financial and operating policy of the board of directors.

(*3) The Company can exercise significant influence by virtue of its contractual right to appoint a director to the board of directors of the entity.

(*4) The Company can exercise significant influence by virtue of its contractual right to appoint one out of four members of the steering committee of the entity. Moreover, the Company has significant financial transactions, which can affect its influence on the entity.

(*5) The Company has joint control over the entity by virtue of its contractual right to appoint directors to the board of directors of the entity, and by strict decision criteria of the Company’s financial and operating policy of the board of directors.

(*6) The Government regulates the Company’s ability to make operating and financial decisions over the entity, as the Government requires maintaining arms-length transactions between KPX and the Company’s other subsidiaries. The Company can exercise significant influence by its right to nominate directors to the board of directors of the entity.

(*7) According to the shareholders’ agreement, all critical financial and operating decisions must be agreed to by all ownership parties. For these reasons, the entities are classified as joint ventures.

(*8) As of reporting date, the reporting period of all associates and joint ventures ends in December 31, except for Pioneer Gas Power Limited whose reporting period ends on March 31.

(*9) As of December 31, 2016, 15.64% of ownership of Hyundai Energy Co., Ltd. is held by NH Power II Co., Ltd. and NH Bank. According to the shareholders’ agreement reached on March 2011, not only does the Company have a call option to acquire the investment in Hyundai Energy Co., Ltd. from NH Power II Co., Ltd. and NH Bank with a certain rate of return, NH Power II Co., Ltd. and NH Bank also have put options to dispose of their investment to the Company. In connection with this agreement, the Company applied the equity method on the investment in Hyundai Energy Co., Ltd. with 46.30% of ownership.

(*10) The Company’s percentage of ownership has decreased due to the acquisition of Daeryun Power Co., Ltd. and the effective percentage of ownership is 19.45% considering stock purchase options.

(*11) The Company’s effective percentage of ownership excluding the redeemable convertible preferred stock is 25.54%.

(*12) The effective percentage of ownership is less than 20% but the Company can exercise significant influence by virtue of its contractual right to appoint a director to the board of directors of the entity and the fact that the dominant portion of the investee’s sales transactions is generated from the Company.

F-91

(*13) The effective percentage of ownership is more than 50% but the Company does not hold control over relevant business while it exercises significant influence by participating in the Investment Decision Committee. For this reason, the entity is classified as an associate.

(*14) The effective percentage of ownership is more than 50%, but the Company does not control the entity according to the shareholders’ agreement. For this reason, the entity is classified as an associate.

(*15) The entity is reclassified from associates to joint ventures since the terms of the shareholders’ agreement had been amended.

(*16) The effective percentage of ownership is less than 20%, but the Company has joint control over the entity as decisions on the major activities require the unanimous consent of the parties that collectively control the entity.

(*17) Although the percentage of ownership temporarily decreased to 8.33% from the difference in timing of capital payment by shareholders, the Company can exercise significant influence by virtue of its right to appoint a director to the board of directors of the entity based on the shareholders’ agreement. The percentage of ownership is 25.00% at the time of completion of capital payment.

(2) The fair value of associates which are actively traded on the open market and have a readily available market value as of December 31, 2015 and 2016 are as follows:

Investees		2015		2016
		In millions of won
<Associates>
Korea Electric Power Industrial Development Co., Ltd.	￦		46,514		45,474
Korea Gas Corporation(*)			696,465		915,705
YTN Co., Ltd.			26,235		22,320
SPC Power Corporation			65,552		70,253
PT. Bayan Resources TBK			446,250		359,200

(*) The carrying amount of Korea Gas Corporation (“KOGAS”) is ￦1,933,877 million as of December 31, 2016 and management has determined that there is objective evidence of impairment. As a result of the impairment test, the Company has not recognized any impairment loss as the value in use is greater than the carrying amount. The recoverable amount of KOGAS based on its value in use is calculated by considering the long-term natural gas supply and demand programs of future cash flows approved by Ministry of Trade, Industry & Energy and the discount rate of 4.66%.

(3) Changes in investments in associates and joint ventures for the years ended December 31, 2015 and 2016 are as follows:

		2015
Investees		Beginning balance		Acquisition		Disposal		Dividends received			Share of income (loss)			Other comprehensive income (loss)			Others			Ending balance
		In millions of won
<Associates>
Daegu Green Power Co., Ltd.	￦		71,387		—		—		—			8,902			—			(22	)		80,267
Korea Gas Corporation			2,097,539		—		—		(4,725	)		67,949			(55,453	)		(2,497	)		2,102,813
Korea Electric Power Industrial Development Co., Ltd.			21,622		—		—		(1,267	)		(1,792	)		—			431			18,994
YTN Co., Ltd.			39,889		—		—		(90	)		(188	)		(935	)		(311	)		38,365
Cheongna Energy Co., Ltd.			28,771		—		—		—			(9,281	)		—			—			19,490
Gangwon Wind Power Co., Ltd.			12,385		—		—		(852	)		1,279			78			—			12,890
Hyundai Green Power Co., Ltd.			113,033		—		—		(8,889	)		9,520			—			—			113,664
Korea Power Exchange			198,021		—		—		—			9,944			—			770			208,735
AMEC Partners Korea Ltd.			200		—		—		—			30			—			—			230
Hyundai Energy Co., Ltd.(*1)			35,925		—		—		—			(13,731	)		—			(15,204	)		6,990
Ecollite Co., Ltd.			—		—		—		—			—			—			—			—
Taebaek Wind Power Co., Ltd.			5,525		—		—		—			(569	)		—			—			4,956
Taeback Guinemi Wind Power Co., Ltd. (formerly, Muju Wind Power Co., Ltd.)			2,706		—		—		—			(119	)		—			—			2,587

F-92

		2015
Investees		Beginning balance		Acquisition		Disposal		Dividends received			Share of income (loss)			Other comprehensive income (loss)			Others			Ending balance
		In millions of won
Pyeongchang Wind Power Co., Ltd.	￦		3,693		—		—		—			(291	)		—			—			3,402
Daeryun Power Co., Ltd.			41,951		—		—		—			(5,798	)		—			3			36,156
JinanJangsu Wind Power Co., Ltd.			77		—		—		—			—			—			—			77
Changjuk Wind Power Co., Ltd.			6,486		—		—		—			(343	)		—			—			6,143
KNH Solar Co., Ltd.			1,744		—		—		—			178			2			—			1,924
SPC Power Corporation			47,799		—		—		(1,349	)		5,375			381			5,827			58,033
Gemeng International Energy Co., Ltd.			667,578		—		—		(37,163	)		51,766			89,481			(43,266	)		728,396
PT. Cirebon Electric Power			43,335		—		—		—			12,210			5,029			—			60,574
KNOC Nigerian East Oil Co., Ltd.			—		—		—		—			(880	)		(641	)		1,521			—
KNOC Nigerian West Oil Co., Ltd.			—		—		—		—			(1,092	)		(599	)		1,691			—
Dolphin Property Limited			61		—		—		—			—			—			—			61
PT Wampu Electric Power			16,071		2,357		—		—			(600	)		1,135			—			18,963
PT. Bayan Resources TBK			540,011		—		—		—			(11,341	)		(3,604	)		—			525,066
S-Power Co., Ltd.			104,244		24,300		—		—			2,364			—			—			130,908
Pioneer Gas Power Limited			50,668		—		—		—			59			460			—			51,187
Eurasia Energy Holdings			—		—		—		—			—			—			—			—
Xe-PianXe-Namnoy Power Co., Ltd.			22,152		9,244		—		—			(749	)		1,216			—			31,863
Busan Solar Co., Ltd.			853		—		—		—			72			—			—			925
Hadong Mineral Fiber Co., Ltd.			3		—		—		—			(3	)		—			—			—
Green Biomass Co., Ltd.			—		—		—		—			—			—			—			—
PT. Mutiara Jawa			818		—		—		—			(818	)		—			—			—
Samcheok Eco Materials Co., Ltd.			212		—		—		—			(178	)		(34	)		—			—
Noeul Green Energy Co., Ltd.			189		200		—		—			(91	)		(3	)		—			295
Naepo Green Energy Co., Ltd.			28,064		—		—		—			(1,318	)		—			—			26,746
Goseong Green Energy Co., Ltd.			2,586		—		—		—			84			—			—			2,670
Gangneung Eco Power Co., Ltd.			2,783		—		—		—			(95	)		—			—			2,688
Shin Pyeongtaek Power Co., Ltd.			—		—		—		—			—			—			—			—
Heang Bok Do Si Photovoltaic Power Co., Ltd.			221		—		—		—			(32	)		—			—			189
DS POWER Co., Ltd.			15,642		—		—		—			(4,671	)		—			(11	)		10,960
Dongducheon Dream Power Co., Ltd.(*2)			100,545		—		—		—			(3,412	)		—			(41,466	)		55,667
KS Solar Co., Ltd.			325		—		—		—			293			—			—			618
Yeongwol Energy Station Co., Ltd.			1,741		—		—		—			(451	)		—			—			1,290
Jinbhuvish Power Generation Pvt. Ltd.			8,344		—		—		—			(42	)		48			—			8,350
SE Green Energy Co., Ltd.			3,623		—		—		—			(48	)		—			—			3,575
Daegu Photovoltaic Co., Ltd.			1,581		—		—		—			305			—			—			1,886
Jeongam Wind Power Co., Ltd.			93		880		—		—			(271	)		—			—			702
Korea Power Engineering Service Co., Ltd.			1,334		—		—		(44	)		542			—			(27	)		1,805
Busan Green Energy Co., Ltd.			—		14,564		—		—			(52	)		—			—			14,512
Jungbu Bio Energy Co., Ltd.			—		1,000		—		—			(96	)		—			—			904
Korea Electric Vehicle Charging Service			—		1,596		—		—			(135	)		—			(15	)		1,446
Ulleungdo Natural Energy Co., Ltd.			—		8,000		—		—			(583	)		—			—			7,417
Korea Nuclear Partners Co., Ltd.			—		290		—		—			(1	)		—			—			289
			4,341,830		62,431		—		(54,379	)		111,801			36,561			(92,576	)		4,405,668
<Joint ventures>
KEPCO-Uhde Inc.			9,042		—		—		—			(493	)		—			—			8,549
Eco Biomass Energy Sdn. Bhd.			—		—		—		—			—			—			—			—
Datang Chaoyang Renewable Power Co., Ltd.			27,514		—		—		—			(135	)		261			—			27,640

F-93

		2015
Investees		Beginning balance		Acquisition		Disposal			Dividends received			Share of income (loss)			Other comprehensive income (loss)			Others			Ending balance
		In millions of won
Shuweihat Asia Power Investment B.V.	￦		16,241		108		—			—			4,008			117			—			20,474
Shuweihat Asia Operation & Maintenance Company			345		—		—			(798	)		922			24			(7	)		486
Waterbury Lake Uranium L.P.			22,010		—		—			—			—			(2,507	)		796			20,299
ASM-BG Investicii AD			19,608		—		—			—			1,384			(789	)		—			20,203
RES Technology AD			14,725		—		—			—			(318	)		(618	)		—			13,789
KV Holdings, Inc.			1,902		—		—			—			74			34			—			2,010
KEPCO SPC Power Corporation			190,519		—		—			(28,986	)		43,801			3,190			—			208,524
Canada Korea Uranium Limited Partnership			—		—		—			—			—			—			—			—
KEPCO Energy Resource Nigeria Limited			—		—		—			—			—			—			—			—
Gansu Datang Yumen Wind Power Co., Ltd.			17,467		—		—			—			(1,546	)		186			—			16,107
Datang Chifeng Renewable Power Co., Ltd.			169,496		—		—			(8,239	)		8,512			1,464			(9	)		171,224
Datang KEPCO Chaoyang Renewable Power Co., Ltd.			10,539		—		—			—			(33	)		74			—			10,580
Rabigh Electricity Company			8,121		—		—			—			21,582			29,703			(38	)		59,368
Rabigh Operation & Maintenance Company			4,628		—		—			(1,780	)		533			205			—			3,586
Jamaica Public Service Company Limited			226,892		—		—			—			—			15,027			(1	)		241,918
KW Nuclear Components Co., Ltd.			2,899		—		—			(1,016	)		3,065			—			37			4,985
Busan Shinho Solar Power Co., Ltd.			3,284		—		—			—			394			—			—			3,678
GS Donghae Electric Power Co., Ltd.			201,409		—		—			—			(1,064	)		—			34			200,379
Global Trade Of Power System Co., Ltd.			343		—		—			—			83			—			—			426
Expressway Solar-light Power Generation Co., Ltd.			2,087		—		—			—			13			—			—			2,100
KODE NOVUS I LLC			12,207		—		—			—			(11,639	)		588			(1,156	)		—
KODE NOVUS II LLC			8,248		—		—			—			(8,104	)		413			(557	)		—
Daejung Offshore Wind Power Co., Ltd.			3,711		—		—			—			(359	)		—			—			3,352
Amman Asia Electric Power Company			122,391		—		—			(19,510	)		25,131			10,244			(588	)		137,668
KAPES, Inc. (formerly, KEPCO-ALSTOM Power Electronics Systems, Inc.)			4,617		—		—			—			(98	)		—			(18	)		4,501
Dangjin Eco Power Co., Ltd.			37,837		20,000		(8,851	)		—			(712	)		70			(63	)		48,281
Honam Wind Power Co., Ltd.			3,555		—		—			—			371			—			—			3,926
Nepal Water & Energy Development Company Private Limited			17,872		—		—			—			(1,277	)		1,170			—			17,765
Chun-cheon Energy Co., Ltd.			—		32,853		—			—			(719	)		(158	)		—			31,976
Yeonggwangbaeksu Wind Power Co., Ltd.			2,962		—		—			—			(294	)		—			—			2,668
Nghi Son 2 Power Ltd.			102		722		—			—			(562	)		2			5			269
Kelar S.A			3,156		—		—			—			—			(407	)		(2,749	)		—
PT. Tanjung Power Indonesia			700		—		—			—			(98	)		—			15			617
Incheon New Power Co., Ltd.			465		—		—			—			49			—			—			514
Seokmun Energy Co., Ltd.			—		—		(100	)		—			—			—			100			—
			1,166,894		53,683		(8,951	)		(60,329	)		82,471			58,293			(4,199	)		1,287,862
	￦		5,508,724		116,114		(8,951	)		(114,708	)		194,272			94,854			(96,775	)		5,693,530

(*1) ‘Others’ include ￦15,204 million of assetsheld-for-sale (note 42).

(*2) ‘Others’ include ￦41,170 million of assetsheld-for-sale (note 42).

F-94

		2016
Investees		Beginning balance		Acquisition		Disposal			Dividends received			Share of income (loss)			Other comprehensive income (loss)			Others			Ending balance
		In millions of won
<Associates>
Daegu Green Power Co., Ltd.	￦		80,267		3,347		(34,422	)		—			(1,814	)		148			(47,526	)		—
Korea Gas Corporation			2,102,813		—		—			(3,213	)		(146,308	)		(14,551	)		(4,864	)		1,933,877
Korea Electric Power Industrial Development Co., Ltd.			18,994		—		—			(1,598	)		4,491			—			(1,412	)		20,475
YTN Co., Ltd.			38,365		—		—			—			(227	)		32			(14	)		38,156
Cheongna Energy Co., Ltd.			19,490		—		—			—			(7,117	)		—			—			12,373
Gangwon Wind Power Co., Ltd.			12,890		—		—			(1,136	)		1,270			45			—			13,069
Hyundai Green Power Co., Ltd.			113,664		—		—			(8,888	)		11,222			—			—			115,998
Korea Power Exchange			208,735		—		—			—			15,847			—			(1,344	)		223,238
AMEC Partners Korea Ltd.			230		—		—			—			(5	)		—			—			225
Hyundai Energy Co., Ltd.			6,990		—		—			—			(21,163	)		—			15,204			1,031
Ecollite Co., Ltd.			—		—		—			—			—			—			—			—
Taebaek Wind Power Co., Ltd.			4,956		—		—			—			(206	)		—			—			4,750
Taeback Guinemi Wind Power Co., Ltd. (formerly, Muju Wind Power Co., Ltd.)			2,587		570		—			—			(26	)		—			—			3,131
Pyeongchang Wind Power Co., Ltd.			3,402		—		—			—			(19	)		—			—			3,383
Daeryun Power Co., Ltd.			36,156		—		—			—			(6,282	)		(1	)		—			29,873
JinanJangsu Wind Power Co., Ltd.			77		—		(64	)		—			(13	)		—			—			—
Changjuk Wind Power Co., Ltd.			6,143		—		—			(190	)		977			—			—			6,930
KNH Solar Co., Ltd.			1,924		—		—			—			144			5			—			2,073
SPC Power Corporation			58,033		—		—			(7,151	)		6,416			(477	)		(3	)		56,818
Gemeng International Energy Co., Ltd.			728,396		—		—			(16,476	)		26,714			(58,493	)		(76	)		680,065
PT. Cirebon Electric Power			60,574		—		—			(1,242	)		31,511			2,568			3,247			96,658
KNOC Nigerian East Oil Co., Ltd.			—		—		—			—			(1,346	)		(398	)		1,744			—
KNOC Nigerian West Oil Co., Ltd.			—		—		—			—			(973	)		(356	)		1,329			—
Dolphin Property Limited			61		—		—			(35	)		—			(69	)		43			—
PT Wampu Electric Power			18,963		—		—			—			3,493			(3	)		735			23,188
PT. Bayan Resources TBK(*2)			525,066		—		—			—			(23,257	)		208			(99,350	)		402,667
S-Power Co., Ltd.			130,908		—		—			—			(7,006	)		—			10			123,912
Pioneer Gas Power Limited			51,187		—		—			—			(698	)		251			—			50,740
Eurasia Energy Holdings			—		—		—			—			—			—			—			—
Xe-PianXe-Namnoy Power Co., Ltd.			31,863		16,402		—			—			1,576			1,703			—			51,544
Busan Solar Co., Ltd.			925		—		(887	)		—			(38	)		—			—			—
Hadong Mineral Fiber Co., Ltd.			—		—		—			—			—			—			—			—
Green Biomass Co., Ltd.			—		—		—			—			(138	)		—			185			47
PT. Mutiara Jawa			—		—		—			—			—			—			—			—
Samcheok Eco Materials Co., Ltd.			—		—		—			—			—			—			—			—
Noeul Green Energy Co., Ltd.			295		1,340		—			—			(418	)		—			—			1,217
Naepo Green Energy Co., Ltd.			26,746		—		—			—			(1,308	)		—			—			25,438
Goseong Green Energy Co., Ltd.			2,670		—		—			—			71			—			(78	)		2,663
Gangneung Eco Power Co., Ltd.			2,688		—		—			—			56			—			(98	)		2,646
Shin Pyeongtaek Power Co., Ltd.			—		—		—			—			—			—			—			—
Heang Bok Do Si Photovoltaic Power Co., Ltd.			189		—		—			—			(10	)		—			2			181
DS POWER Co., Ltd.			10,960		—		—			—			(3,738	)		—			(32	)		7,190
Dongducheon Dream Power Co., Ltd.			55,667		—		—			—			(8,757	)		—			(34	)		46,876
KS Solar Co., Ltd.			618		—		—			—			(14	)		—			—			604
Yeongwol Energy Station Co., Ltd.(*1)			1,290		—		—			—			85			25			(1,400	)		—
Jinbhuvish Power Generation Pvt. Ltd.(*3)			8,350		—		—			—			(49	)		(198	)		(8,103	)		—

F-95

		2016
Investees		Beginning balance		Acquisition		Disposal			Dividends received			Share of income (loss)			Other comprehensive income (loss)			Others			Ending balance
		In millions of won
SE Green Energy Co., Ltd.	￦		3,575		—		—			—			(50	)		—			—			3,525
Daegu Photovoltaic Co., Ltd.			1,886		—		—			(411	)		225			—			—			1,700
Jeongam Wind Power Co., Ltd.			702		3,900		—			—			(602	)		—			—			4,000
Korea Power Engineering Service Co., Ltd.			1,805		—		—			—			1,005			—			—			2,810
Busan Green Energy Co., Ltd.			14,512		—		—			—			(709	)		—			—			13,803
Jungbu Bio Energy Co., Ltd.			904		—		—			—			(904	)		—			—			—
Korea Electric Vehicle Charging Service			1,446		—		—			—			(343	)		—			—			1,103
Ulleungdo Natural Energy Co., Ltd.			7,417		—		—			—			(516	)		—			(7	)		6,894
Korea Nuclear Partners Co., Ltd.			289		—		—			—			(41	)		—			—			248
Tamra Offshore Wind Power Co., Ltd.			—		8,910		—			—			(1,895	)		—			—			7,015
Korea Electric Power Corporation Fund			—		51,500		—			—			(644	)		—			—			50,856
Energy Infra Asset Management Co., Ltd.			—		297		—			—			(38	)		—			—			259
Daegu clean Energy Co., Ltd.			—		140		—			—			—			—			—			140
YaksuESS Co., Ltd			—		210		—			—			(14	)		—			—			196
Nepal Water & Energy Development Company Private Limited			—		—		—			—			—			—			18,667			18,667
			4,405,668		86,616		(35,373	)		(40,340	)		(131,583	)		(69,561	)		(123,175	)		4,092,252
<Joint ventures>
KEPCO-Uhde Inc.(*4)			8,549		—		—			—			(159	)		—			(8,089	)		301
Eco Biomass Energy Sdn. Bhd.			—		—		—			—			—			—			—			—
Datang Chaoyang Renewable Power Co., Ltd.			27,640		—		—			—			1,417			(818	)		—			28,239
Shuweihat Asia Power Investment B.V.			20,474		—		(14,154	)		(2,957	)		6,131			(9,494	)		—			—
Shuweihat Asia Operation & Maintenance Company			486		—		—			(931	)		941			(46	)		—			450
Waterbury Lake Uranium L.P.			20,299		—		—			—			—			1,138			(123	)		21,314
ASM-BG Investicii AD			20,203		—		—			—			1,508			(223	)		—			21,488
RES Technology AD			13,789		—		—			—			(68	)		(139	)		—			13,582
KV Holdings, Inc.			2,010		—		—			(302	)		429			(39	)		—			2,098
KEPCO SPC Power Corporation			208,524		—		—			(5,955	)		48,132			(5,308	)		(26	)		245,367
Canada Korea Uranium Limited Partnership			—		—		—			—			—			—			—			—
Gansu Datang Yumen Wind Power Co., Ltd.			16,107		—		—			—			(2,836	)		(450	)		—			12,821
Datang Chifeng Renewable Power Co., Ltd.			171,224		—		—			(7,384	)		7,455			(4,760	)		—			166,535
Datang KEPCO Chaoyang Renewable Power Co., Ltd.			10,580		—		—			(440	)		1,002			(299	)		—			10,843
Rabigh Electricity Company			59,368		—		—			—			18,961			19,473			—			97,802
Rabigh Operation & Maintenance Company			3,586		—		—			(1,934	)		2,253			229			293			4,427
Jamaica Public Service Company Limited			241,918		—		—			—			—			7,535			—			249,453
KW Nuclear Components Co., Ltd.			4,985		—		—			(2,191	)		4,344			—			(5	)		7,133
Busan Shinho Solar Power Co., Ltd.			3,678		—		—			(185	)		321			—			—			3,814
GS Donghae Electric Power Co., Ltd.			200,379		—		—			—			5,575			—			(6	)		205,948
Global Trade Of Power System Co., Ltd.			426		—		—			—			51			—			—			477

F-96

		2016
Investees		Beginning balance		Acquisition		Disposal			Dividends received			Share of income (loss)			Other comprehensive income (loss)			Others			Ending balance
		In millions of won
Expressway Solar-light Power Generation Co., Ltd.	￦		2,100		—		—			—			243			—			—			2,343
KODE NOVUS I LLC			—		—		—			—			—			—			—			—
KODE NOVUS II LLC			—		258		—			—			(260	)		—			2			—
Daejung Offshore Wind Power Co., Ltd.			3,352		—		—			—			(337	)		—			—			3,015
Amman Asia Electric Power Company			137,668		—		—			(12,684	)		17,811			11,062			—			153,857
KAPES, Inc. (formerly, KEPCO-ALSTOM Power Electronics Systems, Inc.)			4,501		—		—			—			311			—			(54	)		4,758
Dangjin Eco Power Co., Ltd.			48,281		5,100		—			—			(696	)		(26	)		594			53,253
Honam Wind Power Co., Ltd.			3,926		—		—			(104	)		629			—			—			4,451
Nepal Water & Energy Development Company Private Limited			17,765		—		—			—			359			543			(18,667	)		—
Chun-cheon Energy Co., Ltd.			31,976		19,832		—			—			(1,121	)		(95	)		—			50,592
Yeonggwangbaeksu Wind Power Co., Ltd.			2,668		—		—			—			16			—			5			2,689
Nghi Son 2 Power Ltd.			269		716		—			—			(740	)		(16	)		—			229
Kelar S.A			—		—		—			—			—			—			—			—
PT. Tanjung Power Indonesia			617		—		—			—			1,337			—			(8	)		1,946
Incheon New Power Co., Ltd.			514		—		—			—			41			8			—			563
Seokmun Energy Co., Ltd.			—		—		—			—			(197	)		793			(205	)		391
Daehan Wind Power PSC			—		285		—			—			(261	)		(8	)		—			16
Barakah One Company			—		118		—			—			—			—			(2	)		116
Nawah Energy Company			—		296		—			—			—			—			(6	)		290
MOMENTUM			—		1		—			—			65			—			1			67
Daegu Green Power Co., Ltd.			—		—		—			—			—			—			47,528			47,528
			1,287,862		26,606		(14,154	)		(35,067	)		112,657			19,060			21,232			1,418,196
	￦		5,693,530		113,222		(49,527	)		(75,407	)		(18,926	)		(50,501	)		(101,943	)		5,510,448

(*1) ‘Others’ include ￦1,400 million of assetsheld-for-sale (note 42).

(*2) It was determined that there is objective evidence of impairment due to prolonged operating losses. As a result, the Company recognized an impairment loss of ￦99,338 million in impairment loss on investments in associates and joint ventures for the year ended December 31, 2016.

(*3) Due to discontinue of operations during the current year, the Company recognized an impairment loss of ￦8,103 million in impairment loss on investments in associates and joint ventures for the year ended December 31, 2016.

(*4) It was determined that there is objective evidence of impairment due to prolonged operating losses. As a result, the Company recognized an impairment loss of ￦8,099 million in impairment loss on investments in associates and joint ventures for the year ended December 31, 2016.

F-97

(4) Summary of financial information of associates and joint ventures as of and for the years ended December 31, 2015 and 2016 are as follows:

		2015
Investees		Total assets		Total liabilities		Sales		Profit (loss) for the period
		In millions of won
<Associates>
Daegu Green Power Co., Ltd.	￦		639,118		471,497		321,273		18,625
Korea Gas Corporation			42,385,340		32,328,396		26,052,724		319,190
Korea Electric Power Industrial Development Co., Ltd.			142,835		77,340		324,162		9,855
YTN Co., Ltd.			305,799		126,561		117,418		(520	)
Cheongna Energy Co., Ltd.			458,205		419,353		48,519		(21,108	)
Gangwon Wind Power Co., Ltd.			114,600		28,994		21,941		8,529
Hyundai Green Power Co., Ltd.			1,182,352		790,407		486,435		31,011
Korea Power Exchange			236,199		27,464		87,400		9,303
AMEC Partners Korea Ltd.			1,332		123		511		155
Hyundai Energy Co., Ltd.			526,305		473,736		80,067		(29,749	)
Ecollite Co., Ltd.			2,271		345		—		(97	)
Taebaek Wind Power Co., Ltd.			48,009		26,212		6,626		(302	)
Taeback Guinemi Wind Power Co., Ltd. (formerly, Muju Wind Power Co., Ltd.)			10,349		—		—		(477	)
Pyeongchang Wind Power Co., Ltd.			62,565		48,959		—		(1,164	)
Daeryun Power Co., Ltd.			838,199		657,551		279,787		(29,806	)
JinanJangsu Wind Power Co., Ltd.			306		—		—		(1	)
Changjuk Wind Power Co., Ltd.			41,444		19,053		6,472		772
KNH Solar Co., Ltd.			27,254		20,105		4,399		861
SPC Power Corporation			182,908		30,191		68,149		37,395
Gemeng International Energy Co., Ltd.			5,956,288		3,940,455		902,008		95,064
PT. Cirebon Electric Power			1,026,729		806,458		295,788		43,968
KNOC Nigerian East Oil Co., Ltd.			264,434		337,762		—		(6,069	)
KNOC Nigerian West Oil Co., Ltd.			160,765		230,001		—		(7,386	)
Dolphin Property Limited			300		1		—		8
PT Wampu Electric Power			201,383		160,159		17,476		(2,696	)
PT. Bayan Resources TBK			1,043,143		901,952		461,349		(30,014	)
S-Power Co., Ltd.			935,870		664,523		632,073		5,336
Pioneer Gas Power Limited			310,761		240,833		—		148
Eurasia Energy Holdings			599		1,069		—		—
Xe-PianXe-Namnoy Power Co., Ltd.			506,970		341,261		—		2,760
Busan Solar Co., Ltd.			26,059		21,367		4,267		383
Hadong Mineral Fiber Co., Ltd.			2		21		—		(30	)
Green Biomass Co., Ltd.			10,664		9,343		4,136		(1,323	)
PT. Mutiara Jawa			25,013		29,913		1,943		(7,247	)
Samcheok Eco Materials Co., Ltd.			23,119		735		—		(2,171	)
Noeul Green Energy Co., Ltd.			1,517		44		—		(446	)
Naepo Green Energy Co., Ltd.			108,167		1,184		3,126		(5,274	)
Goseong Green Energy Co., Ltd.			95,323		3,248		—		(4,312	)
Gangneung Eco Power Co., Ltd.			81,459		9,163		—		(3,610	)
Shin Pyeongtaek Power Co., Ltd.			25,875		29,190		—		(2,595	)
Heang Bok Do Si Photovoltaic Power Co., Ltd.			3,128		2,452		490		81
DS POWER Co., Ltd.			641,257		525,524		33,542		(5,759	)

F-98

		2015
Investees		Total assets		Total liabilities		Sales		Profit (loss) for the period
		In millions of won
Dongducheon Dream Power Co., Ltd.	￦		1,668,235		1,397,026		1,003,346		(10,307	)
KS Solar Co., Ltd.			29,745		26,469		4,667		278
Yeongwol Energy Station Co., Ltd.			179,852		166,953		12,068		1,831
Jinbhuvish Power Generation Pvt. Ltd.			75,429		19,199		—		(805	)
SE Green Energy Co., Ltd.			7,484		—		—		(103	)
Daegu Photovoltaic Co., Ltd.			21,039		14,535		3,977		1,051
Jeongam Wind Power Co., Ltd.			2,053		299		—		(621	)
Korea Power Engineering Service Co., Ltd.			9,194		2,968		25,925		2,296
Busan Green Energy Co., Ltd.			50,093		53		—		(180	)
Jungbu Bio Energy Co., Ltd.			5,192		400		—		(508	)
Korea Electric Vehicle Charging Service			9,577		4,412		—		(482	)
Ulleungdo Natural Energy Co., Ltd.			27,113		2,262		—		(1,948	)
Korea Nuclear Partners Co., Ltd.			1,002		6		—		(4	)
<Joint ventures>
KEPCO-Uhde Inc.			17,535		111		—		(765	)
Eco Biomass Energy Sdn. Bhd.			—		—		—		—
Datang Chaoyang Renewable Power Co., Ltd.			150,157		81,056		16,335		(373	)
Shuweihat Asia Power Investment B.V.			41,969		17		—		8,232
Shuweihat Asia Operation & Maintenance Company			885		—		2,318		1,666
Waterbury Lake Uranium L.P.			51,302		4		—		—
ASM-BG Investicii AD			83,766		43,359		12,328		2,833
RES Technology AD			73,261		45,684		7,539		(566	)
KV Holdings, Inc.			5,025		—		—		186
KEPCO SPC Power Corporation			449,553		172,261		175,008		59,610
Canada Korea Uranium Limited Partnership			305		124		—		(19	)
KEPCO Energy Resource Nigeria Limited			380,282		416,959		—		(16,309	)
Gansu Datang Yumen Wind Power Co., Ltd.			98,298		58,030		7,280		(4,507	)
Datang Chifeng Renewable Power Co., Ltd.			882,914		454,731		103,860		21,900
Datang KEPCO Chaoyang Renewable Power Co., Ltd.			65,110		38,661		7,880		1,216
Rabigh Electricity Company			2,644,825		2,297,194		293,184		53,384
Rabigh Operation & Maintenance Company			18,186		9,222		22,203		2,144
Jamaica Public Service Company Limited			1,086,244		657,962		859,728		3,305
KW Nuclear Components Co., Ltd.			36,065		24,777		16,217		7,687
Busan Shinho Solar Power Co., Ltd.			51,617		36,903		7,565		1,471
GS Donghae Electric Power Co., Ltd.			1,675,986		1,086,534		—		(2,823	)
Global Trade Of Power System Co., Ltd.			1,547		78		4,849		287
Expressway Solar-light Power Generation Co., Ltd.			21,154		13,913		2,981		443
KODE NOVUS I LLC			64,453		110,030		3,421		(59,389	)
KODE NOVUS II LLC			22,500		45,306		1,868		(39,345	)
Daejung Offshore Wind Power Co., Ltd.			6,795		78		—		(606	)
Amman Asia Electric Power Company			875,590		645,998		46,940		41,880
KAPES, Inc. (formerly, KEPCO-ALSTOM Power Electronics Systems, Inc.)			50,152		41,326		18,849		(611	)
Dangjin Eco Power Co., Ltd.			136,982		945		—		(1,035	)
Honam Wind Power Co., Ltd.			41,527		28,100		5,944		1,266

F-99

		2015
Investees		Total assets		Total liabilities		Sales		Profit (loss) for the period
		In millions of won
Nepal Water & Energy Development Company Private Limited	￦		42,644		11,136		—		(647	)
Chun-cheon Energy Co., Ltd.			149,025		42,094		—		(2,389	)
Yeonggwangbaeksu Wind Power Co., Ltd.			104,045		86,257		4,974		(1,956	)
Nghi Son 2 Power Ltd.			771		234		—		(1,111	)
Kelar S.A			375,136		405,618		—		(3,140	)
PT. Tanjung Power Indonesia			37,948		36,185		16,476		(276	)
Incheon New Power Co., Ltd.			10,078		8,306		3,318		301
Seokmun Energy Co., Ltd.			184,051		184,759		—		(552	)

		2016
Investees		Total assets		Total liabilities		Sales		Profit (loss) for the period
		In millions of won
<Associates>
Korea Gas Corporation	￦		39,927,836		30,541,350		21,108,116		(673,558	)
Korea Electric Power Industrial Development Co., Ltd.			144,346		73,742		304,067		17,187
YTN Co., Ltd.			304,536		126,324		130,690		2,051
Cheongna Energy Co., Ltd.			469,843		447,216		46,484		(16,127	)
Gangwon Wind Power Co., Ltd.			102,550		15,753		22,774		8,133
Hyundai Green Power Co., Ltd.			1,151,975		751,981		469,547		38,743
Korea Power Exchange			255,533		32,295		101,222		15,087
AMEC Partners Korea Ltd.			1,216		32		103		(25	)
Hyundai Energy Co., Ltd.			505,979		499,205		61,813		(45,800	)
Ecollite Co., Ltd.			2,157		336		—		(105	)
Taebaek Wind Power Co., Ltd.			43,162		24,162		5,741		(2,796	)
Taeback Guinemi Wind Power Co., Ltd. (formerly, Muju Wind Power Co., Ltd.)			12,523		1		—		(106	)
Pyeongchang Wind Power Co., Ltd.			75,440		61,909		3,997		(45	)
Daeryun Power Co., Ltd.			793,283		644,930		249,558		(32,291	)
Changjuk Wind Power Co., Ltd.			37,878		15,162		5,782		1,739
KNH Solar Co., Ltd.			25,878		18,199		4,006		638
SPC Power Corporation			191,562		42,042		73,674		42,617
Gemeng International Energy Co., Ltd.			5,822,879		3,821,905		1,233,972		66,370
PT. Cirebon Electric Power			988,975		637,491		265,813		114,653
KNOC Nigerian East Oil Co., Ltd.			272,964		358,211		—		(7,051	)
KNOC Nigerian West Oil Co., Ltd.			165,396		243,713		—		(6,562	)
PT Wampu Electric Power			222,004		171,595		19,260		7,550
PT. Bayan Resources TBK			945,436		845,963		593,441		402
S-Power Co., Ltd.			886,841		629,992		453,606		(14,885	)
Pioneer Gas Power Limited			345,791		276,978		14,353		396
Eurasia Energy Holdings			618		1,103		—		—
Xe-PianXe-Namnoy Power Co., Ltd.			772,699		543,472		—		6,458
Hadong Mineral Fiber Co., Ltd.			—		20		—		—
Green Biomass Co., Ltd.			9,336		9,001		2,892		(972	)
PT. Mutiara Jawa			28,104		34,671		7,175		(1,361	)
Samcheok Eco Materials Co., Ltd.			24,143		254		—		(1,945	)
Noeul Green Energy Co., Ltd.			115,062		110,866		203		(1,155	)
Naepo Green Energy Co., Ltd.			104,029		2,276		4,912		(5,230	)

F-100

		2016
Investees		Total assets		Total liabilities		Sales		Profit (loss) for the period
		In millions of won
Goseong Green Energy Co., Ltd.	￦		356,546		110,753		—		(5,489	)
Gangneung Eco Power Co., Ltd.			176,805		6,503		—		(3,494	)
Shin Pyeongtaek Power Co., Ltd.			54,174		60,518		—		(3,291	)
Heang Bok Do Si Photovoltaic Power Co., Ltd.			2,937		2,297		427		(47	)
DS POWER Co., Ltd.			726,699		618,793		276,324		(10,031	)
Dongducheon Dream Power Co., Ltd.			1,670,945		1,427,773		946,379		(27,936	)
KS Solar Co., Ltd.			27,213		24,035		4,152		(79	)
Jinbhuvish Power Generation Pvt. Ltd.			70,273		14,513		—		(950	)
SE Green Energy Co., Ltd.			7,381		—		—		(103	)
Daegu Photovoltaic Co., Ltd.			18,909		13,047		3,317		739
Jeongam Wind Power Co., Ltd.			13,199		3,199		—		(1,496	)
Korea Power Engineering Service Co., Ltd.			13,401		3,713		27,394		3,463
Busan Green Energy Co., Ltd.			147,843		100,247		—		(2,444	)
Jungbu Bio Energy Co., Ltd.			11,340		12,037		—		(5,489	)
Korea Electric Vehicle Charging Service			10,545		6,604		5,177		(1,225	)
Ulleungdo Natural Energy Co., Ltd.			24,836		1,738		—		(1,730	)
Korea Nuclear Partners Co., Ltd.			1,363		507		372		(140	)
Tamra Offshore Wind Power Co., Ltd.			127,880		101,900		983		(6,307	)
Korea Electric Power Corporation Fund			51,970		128		3		(647	)
Energy Infra Asset Management Co., Ltd.			2,779		160		32		(381	)
Daegu clean Energy Co., Ltd.			500		—		—		—
YaksuESS Co., Ltd			6,474		5,801		—		(48	)
Nepal Water & Energy Development Company Private Limited			43,788		10,477		—		(703	)
<Joint ventures>
KEPCO-Uhde Inc.			624		33		—		(16,855	)
Eco Biomass Energy Sdn. Bhd.			—		—		—		—
Datang Chaoyang Renewable Power Co., Ltd.			142,684		72,086		18,628		3,462
Shuweihat Asia Power Investment B.V.			282		4		—		12,380
Shuweihat Asia Operation & Maintenance Company			1,016		13		2,388		1,723
Waterbury Lake Uranium L.P.			56,181		47		—		—
ASM-BG Investicii AD			79,898		36,921		12,604		3,105
RES Technology AD			68,553		41,389		7,798		(139	)
KV Holdings, Inc.			5,245		1		—		1,072
KEPCO SPC Power Corporation			448,069		121,783		165,046		63,689
Canada Korea Uranium Limited Partnership			285		144		—		(59	)
Gansu Datang Yumen Wind Power Co., Ltd.			89,517		57,464		4,263		(6,815	)
Datang Chifeng Renewable Power Co., Ltd.			813,804		397,344		99,795		19,042
Datang KEPCO Chaoyang Renewable Power Co., Ltd.			62,600		35,493		8,742		2,505
Rabigh Electricity Company			2,691,654		2,258,772		278,431		37,791
Rabigh Operation & Maintenance Company			25,032		13,965		25,607		4,870
Jamaica Public Service Company Limited			1,291,008		659,296		827,298		25,324
KW Nuclear Components Co., Ltd.			26,417		11,990		26,481		9,452
Busan Shinho Solar Power Co., Ltd.			47,789		32,533		6,770		1,247
GS Donghae Electric Power Co., Ltd.			1,952,297		1,346,568		19,851		16,396
Global Trade Of Power System Co., Ltd.			1,661		18		2,667		205

F-101

		2016
Investees		Total assets		Total liabilities		Sales		Profit (loss) for the period
		In millions of won
Expressway Solar-light Power Generation Co., Ltd.	￦		20,790		12,710		3,395		960
KODE NOVUS I LLC			14,286		104,252		2,362		(50,151	)
KODE NOVUS II LLC			3,236		50,267		810		(22,582	)
Daejung Offshore Wind Power Co., Ltd.			6,076		34		—		(675	)
Amman Asia Electric Power Company			881,164		624,590		13,631		29,684
KAPES, Inc. (formerly, KEPCO-ALSTOM Power Electronics Systems, Inc.)			145,576		136,247		31,852		456
Dangjin Eco Power Co., Ltd.			149,926		1,001		—		(2,023	)
Honam Wind Power Co., Ltd.			41,614		26,375		6,776		2,171
Chun-cheon Energy Co., Ltd.			548,306		379,113		—		(3,684	)
Yeonggwangbaeksu Wind Power Co., Ltd.			99,773		81,881		11,208		(26	)
Nghi Son 2 Power Ltd.			757		302		—		(1,481	)
Kelar S.A			617,803		712,124		—		(4,109	)
PT. Tanjung Power Indonesia			203,051		197,491		122,583		3,821
Incheon New Power Co., Ltd.			7,902		5,961		2,985		168
Seokmun Energy Co., Ltd.			235,905		234,556		—		(543	)
Daehan Wind Power PSC			750		714		—		(523	)
Barakah One Company			17,117,338		17,116,680		—		—
Nawah Energy Company			1,645		—		—		—
MOMENTUM			2,749		2,547		2,886		194
Daegu Green Power Co., Ltd.			636,438		547,017		265,621		(3,981	)

(5) Financial information of associates and joint ventures reconciled to the Company’s investments in consolidated financial statements as of December 31, 2015 and 2016 are as follows:

		2015
Investees		Net assets			Percentage of ownership (*)			Share in net assets			Investment differential		Intercompany transaction			Others			Book value
		In millions of won
<Associates>
Daegu Green Power Co., Ltd.	￦		167,621			47.80	%		80,123			144		—			—			80,267
Korea Gas Corporation			10,056,944			21.57	%		2,169,283			—		—			(66,470	)		2,102,813
Korea Electric Power Industrial Development Co., Ltd.			65,495			29.00	%		18,994			—		—			—			18,994
YTN Co., Ltd.			179,238			21.43	%		38,411			—		(43	)		(3	)		38,365
Cheongna Energy Co., Ltd.			38,852			43.90	%		17,056			2,584		(150	)		—			19,490
Gangwon Wind Power Co., Ltd.			85,606			15.00	%		12,841			—		—			49			12,890
Hyundai Green Power Co., Ltd.			391,945			29.00	%		113,664			—		—			—			113,664
Korea Power Exchange			208,735			100.00	%		208,735			—		—			—			208,735
AMEC Partners Korea Ltd.			1,209			19.00	%		230			—		—			—			230
Hyundai Energy Co., Ltd.			52,569			46.30	%		24,340			—		(1,120	)		(16,230	)		6,990
Ecollite Co., Ltd.			1,926			36.10	%		695			—		—			(695	)		—
Taebaek Wind Power Co., Ltd.			21,797			25.00	%		5,449			—		(493	)		—			4,956
Taeback Guinemi Wind Power Co., Ltd. (formerly, Muju Wind Power Co., Ltd.)			10,349			25.00	%		2,587			—		—			—			2,587
Pyeongchang Wind Power Co., Ltd.			13,606			25.00	%		3,402			—		—			—			3,402
Daeryun Power Co., Ltd.			180,648			19.45	%		35,136			1,014		—			6			36,156
JinanJangsu Wind Power Co., Ltd.			306			25.00	%		77			—		—			—			77
Changjuk Wind Power Co., Ltd.			22,391			30.00	%		6,717			—		(574	)		—			6,143
KNH Solar Co., Ltd.			7,149			27.00	%		1,930			—		(6	)		—			1,924
SPC Power Corporation			152,717			38.00	%		58,033			—		—			—			58,033
Gemeng International Energy Co., Ltd.			2,015,833			34.00	%		685,383			—		—			43,013			728,396
PT. Cirebon Electric Power			220,271			27.50	%		60,574			—		—			—			60,574
KNOC Nigerian East Oil Co., Ltd.			(73,328	)		14.63	%		(10,728	)		—		—			10,728			—
KNOC Nigerian West Oil Co., Ltd.			(69,236	)		14.63	%		(10,129	)		—		—			10,129			—
Dolphin Property Limited			299			15.00	%		45			—		—			16			61
PT Wampu Electric Power			41,224			46.00	%		18,963			—		—			—			18,963
PT. Bayan Resources TBK			141,191			20.00	%		28,238			498,089		—			(1,261	)		525,066

F-102

		2015
Investees		Net assets			Percentage of ownership (*)			Share in net assets			Investment differential			Intercompany transaction			Others			Book value
		In millions of won
S-Power Co., Ltd.	￦		271,347			49.00	%		132,960			—			(2,052	)		—			130,908
Pioneer Gas Power Limited			69,928			40.00	%		27,971			23,147			—			69			51,187
Eurasia Energy Holdings			(470	)		40.00	%		(188	)		—			—			188			—
Xe-PianXe-Namnoy Power Co., Ltd.			165,709			25.00	%		41,427			(8,796	)		(479	)		(289	)		31,863
Busan Solar Co., Ltd.			4,692			19.80	%		929			—			(4	)		—			925
Hadong Mineral Fiber Co., Ltd.			(19	)		25.00	%		(5	)		—			—			5			—
Green Biomass Co., Ltd.			1,321			14.00	%		185			—			—			(185	)		—
PT. Mutiara Jawa			(4,900	)		29.00	%		(1,421	)		70			—			1,351			—
Samcheok Eco Materials Co., Ltd.			22,384			2.67	%		598			—			—			(598	)		—
Noeul Green Energy Co., Ltd.			1,473			20.00	%		295			—			—			—			295
Naepo Green Energy Co., Ltd.			106,983			25.00	%		26,746			—			—			—			26,746
Goseong Green Energy Co., Ltd.			92,075			2.90	%		2,670			—			—			—			2,670
Gangneung Eco Power Co., Ltd.			72,296			3.72	%		2,689			—			—			(1	)		2,688
Shin Pyeongtaek Power Co., Ltd.			(3,315	)		40.00	%		(1,326	)		—			(1,995	)		3,321			—
Heang Bok Do Si Photovoltaic Power Co., Ltd.			676			28.00	%		189			—			—			—			189
DS POWER Co., Ltd.			115,733			14.44	%		16,712			—			(5,940	)		188			10,960
Dongducheon Dream Power Co., Ltd.			271,209			33.61	%		91,153			—			5,398			(40,884	)		55,667
KS Solar Co., Ltd.			3,276			19.00	%		622			—			(4	)		—			618
Yeongwol Energy Station Co., Ltd.			12,899			10.00	%		1,290			—			—			—			1,290
Jinbhuvish Power Generation Pvt. Ltd.			56,230			5.16	%		2,901			5,450			—			(1	)		8,350
SE Green Energy Co., Ltd.			7,484			47.76	%		3,575			—			—			—			3,575
Daegu Photovoltaic Co., Ltd.			6,504			29.00	%		1,886			—			—			—			1,886
Jeongam Wind Power Co., Ltd.			1,754			40.00	%		702			—			—			—			702
Korea Power Engineering Service Co., Ltd.			6,226			29.00	%		1,805			—			—			—			1,805
Busan Green Energy Co., Ltd.			50,040			29.00	%		14,512			—			—			—			14,512
Jungbu Bio Energy Co., Ltd.			4,792			18.87	%		904			—			—			—			904
Korea Electric Vehicle Charging Service			5,165			28.00	%		1,446			—			—			—			1,446
Ulleungdo Natural Energy Co., Ltd.			24,851			29.85	%		7,418			—			—			(1	)		7,417
Korea Nuclear Partners Co., Ltd.			996			29.00	%		289			—			—			—			289
<Joint ventures>
KEPCO-Uhde Inc.			17,424			50.85	%		8,860			—			—			(311	)		8,549
Eco Biomass Energy Sdn. Bhd.			—			61.53	%		—			—			—			—			—
Datang Chaoyang Renewable Power Co., Ltd.			69,101			40.00	%		27,640			—			—			—			27,640
Shuweihat Asia Power Investment B.V.			41,952			49.00	%		20,556			—			—			(82	)		20,474
Shuweihat Asia Operation & Maintenance Company			885			55.00	%		487			—			—			(1	)		486
Waterbury Lake Uranium L.P.			51,298			40.00	%		20,519			—			—			(220	)		20,299
ASM-BG Investicii AD			40,407			50.00	%		20,203			—			—			—			20,203
RES Technology AD			27,577			50.00	%		13,789			—			—			—			13,789
KV Holdings, Inc.			5,025			40.00	%		2,010			—			—			—			2,010
KEPCO SPC Power Corporation			277,292			75.20	%		208,524			—			—			—			208,524
Canada Korea Uranium Limited Partnership			181			12.50	%		23			—			—			(23	)		—
KEPCO Energy Resource Nigeria Limited			(36,677	)		30.00	%		(11,003	)		—			—			11,003			—
Gansu Datang Yumen Wind Power Co., Ltd.			40,268			40.00	%		16,107			—			—			—			16,107
Datang Chifeng Renewable Power Co., Ltd.			428,183			40.00	%		171,273			—			—			(49	)		171,224
Datang KEPCO Chaoyang Renewable Power Co., Ltd.			26,449			40.00	%		10,580			—			—			—			10,580
Rabigh Electricity Company			347,631			40.00	%		139,052			—			(79,646	)		(38	)		59,368
Rabigh Operation & Maintenance Company			8,964			40.00	%		3,586			—			—			—			3,586
Jamaica Public Service Company Limited			428,282			40.00	%		171,313			(72,370	)		—			142,975			241,918
KW Nuclear Components Co., Ltd.			11,288			45.00	%		5,080			90			—			(185	)		4,985
Busan Shinho Solar Power Co., Ltd.			14,714			25.00	%		3,678			—			—			—			3,678
GS Donghae Electric Power Co., Ltd.			589,452			34.00	%		200,414			—			—			(35	)		200,379
Global Trade Of Power System Co., Ltd.			1,469			29.00	%		426			—			—			—			426
Expressway Solar-light Power Generation Co., Ltd.			7,241			29.00	%		2,100			—			—			—			2,100
KODE NOVUS I LLC			(45,577	)		50.00	%		(22,789	)		4,732			—			18,057			—

F-103

		2015
Investees		Net assets			Percentage of ownership (*)			Share in net assets			Investment differential		Intercompany transaction		Others			Book value
		In millions of won
KODE NOVUS II LLC	￦		(22,806	)		49.00	%		(11,175	)		—		—		11,175			—
Daejung Offshore Wind Power Co., Ltd.			6,717			49.90	%		3,352			—		—		—			3,352
Amman Asia Electric Power Company			229,592			60.00	%		137,755			—		—		(87	)		137,668
KAPES, Inc. (formerly, KEPCO-ALSTOM Power Electronics Systems, Inc.)			8,826			51.00	%		4,501			—		—		—			4,501
Dangjin Eco Power Co., Ltd.			136,037			34.00	%		46,253			2,696		—		(668	)		48,281
Honam Wind Power Co., Ltd.			13,427			29.00	%		3,894			32		—		—			3,926
Nepal Water & Energy Development Company Private Limited			31,508			52.77	%		16,627			972		—		166			17,765
Chun-cheon Energy Co., Ltd.			106,931			29.90	%		31,972			3		—		1			31,976
Yeonggwangbaeksu Wind Power Co., Ltd.			17,788			15.00	%		2,668			—		—		—			2,668
Nghi Son 2 Power Ltd.			537			50.00	%		268			—		—		1			269
Kelar S.A			(30,482	)		65.00	%		(19,814	)		2,424		—		17,390			—
PT. Tanjung Power Indonesia			1,763			35.00	%		617			—		—		—			617
Incheon New Power Co., Ltd.			1,772			29.00	%		514			—		—		—			514
Seokmun Energy Co., Ltd.			(708	)		29.00	%		(205	)		—		—		205			—

(*) The percentage of ownership shown above is after considering the treasury stocks and others.

		2016
Investees		Net assets			Percentage of ownership (*)			Share in net assets			Investment differential			Intercompany transaction			Others			Book value
		In millions of won
<Associates>
Korea Gas Corporation	￦		9,386,486			21.57	%		2,024,665			—			—			(90,788	)		1,933,877
Korea Electric Power Industrial Development Co., Ltd.			70,604			29.00	%		20,475			—			—			—			20,475
YTN Co., Ltd.			178,212			21.43	%		38,191			—			(30	)		(5	)		38,156
Cheongna Energy Co., Ltd.			22,627			43.90	%		9,933			2,584			(144	)		—			12,373
Gangwon Wind Power Co., Ltd.			86,797			15.00	%		13,020			—			—			49			13,069
Hyundai Green Power Co., Ltd.			399,994			29.00	%		115,998			—			—			—			115,998
Korea Power Exchange			223,238			100.00	%		223,238			—			—			—			223,238
AMEC Partners Korea Ltd.			1,184			19.00	%		225			—			—			—			225
Hyundai Energy Co., Ltd.			6,774			46.30	%		3,136			—			(1,079	)		(1,026	)		1,031
Ecollite Co., Ltd.			1,821			36.10	%		657			—			—			(657	)		—
Taebaek Wind Power Co., Ltd.			19,000			25.00	%		4,750			—			—			—			4,750
Taeback Guinemi Wind Power Co., Ltd. (formerly, Muju Wind Power Co., Ltd.)			12,522			25.00	%		3,131			—			—			—			3,131
Pyeongchang Wind Power Co., Ltd.			13,531			25.00	%		3,383			—			—			—			3,383
Daeryun Power Co., Ltd.			148,353			19.45	%		28,855			1,014			—			4			29,873
Changjuk Wind Power Co., Ltd.			22,716			30.00	%		6,815			—			—			115			6,930
KNH Solar Co., Ltd.			7,679			27.00	%		2,073			—			—			—			2,073
SPC Power Corporation			149,520			38.00	%		56,818			—			—			—			56,818
Gemeng International Energy Co., Ltd.			2,000,974			34.00	%		680,331			—			—			(266	)		680,065
PT. Cirebon Electric Power			351,484			27.50	%		96,658			—			—			—			96,658
KNOC Nigerian East Oil Co., Ltd.			(85,247	)		14.63	%		(12,472	)		—			—			12,472			—
KNOC Nigerian West Oil Co., Ltd.			(78,317	)		14.63	%		(11,458	)		—			—			11,458			—
PT Wampu Electric Power			50,409			46.00	%		23,188			—			—			—			23,188
PT. Bayan Resources TBK			99,473			20.00	%		19,895			482,109			—			(99,337	)		402,667
S-Power Co., Ltd.			256,849			49.00	%		125,856			—			(1,944	)		—			123,912
Pioneer Gas Power Limited			68,813			40.00	%		27,525			23,147			—			68			50,740
Eurasia Energy Holdings			(485	)		40.00	%		(194	)		—			—			194			—
Xe-PianXe-Namnoy Power Co., Ltd.			229,227			25.00	%		57,307			(4,802	)		(672	)		(289	)		51,544
Hadong Mineral Fiber Co., Ltd.			(20	)		25.00	%		(5	)		—			—			5			—
Green Biomass Co., Ltd.			335			14.00	%		47			—			—			—			47
PT. Mutiara Jawa			(6,567	)		29.00	%		(1,904	)		70			—			1,834			—
Samcheok Eco Materials Co., Ltd.			23,889			2.35	%		561			—			—			(561	)		—
Noeul Green Energy Co., Ltd.			4,196			29.00	%		1,217			—			—			—			1,217
Naepo Green Energy Co., Ltd.			101,753			25.00	%		25,438			—			—			—			25,438
Goseong Green Energy Co., Ltd.			245,793			1.12	%		2,742			—			(79	)		—			2,663
Gangneung Eco Power Co., Ltd.			170,302			1.61	%		2,744			—			(98	)		—			2,646

F-104

		2016
Investees		Net assets			Percentage of ownership (*)			Share in net assets			Investment differential			Intercompany transaction			Others			Book value
		In millions of won
Shin Pyeongtaek Power Co., Ltd.	￦		(6,344	)		40.00	%		(2,538	)		—			(3,380	)		5,918			—
Heang Bok Do Si Photovoltaic Power Co., Ltd.			640			28.00	%		179			—			—			2			181
DS POWER Co., Ltd.			107,906			14.44	%		15,582			—			(7,302	)		(1,090	)		7,190
Dongducheon Dream Power Co., Ltd.			243,172			33.61	%		81,730			—			(4,768	)		(30,086	)		46,876
KS Solar Co., Ltd.			3,178			19.00	%		604			—			—			—			604
Jinbhuvish Power Generation Pvt. Ltd.			55,760			5.16	%		2,877			—			—			(2,877	)		—
SE Green Energy Co., Ltd.			7,381			47.76	%		3,525			—			—			—			3,525
Daegu Photovoltaic Co., Ltd.			5,862			29.00	%		1,700			—			—			—			1,700
Jeongam Wind Power Co., Ltd.			10,000			40.00	%		4,000			—			—			—			4,000
Korea Power Engineering Service Co., Ltd.			9,688			29.00	%		2,810			—			—			—			2,810
Busan Green Energy Co., Ltd.			47,596			29.00	%		13,803			—			—			—			13,803
Jungbu Bio Energy Co., Ltd.			(697	)		18.87	%		(132	)		—			—			132			—
Korea Electric Vehicle Charging Service			3,941			28.00	%		1,103			—			—			—			1,103
Ulleungdo Natural Energy Co., Ltd.			23,098			29.85	%		6,895			—			—			(1	)		6,894
Korea Nuclear Partners Co., Ltd.			856			29.00	%		248			—			—			—			248
Tamra Offshore Wind Power Co., Ltd.			25,980			27.00	%		7,015			—			—			—			7,015
Korea Electric Power Corporation Fund			51,842			98.09	%		50,852			—			—			4			50,856
Energy Infra Asset Management Co., Ltd.			2,619			9.90	%		259			—			—			—			259
Daegu clean Energy Co., Ltd.			500			28.00	%		140			—			—			—			140
YaksuESS Co., Ltd			673			29.00	%		195			—			—			1			196
Nepal Water & Energy Development Company Private Limited			33,311			52.77	%		17,578			972			—			117			18,667
<Joint ventures>
KEPCO-Uhde Inc.			591			50.85	%		301			—			—			—			301
Eco Biomass Energy Sdn. Bhd.			—			61.53	%		—			—			—			—			—
Datang Chaoyang Renewable Power Co., Ltd.			70,598			40.00	%		28,239			—			—			—			28,239
Shuweihat Asia Power Investment B.V.			278			49.00	%		136			—			—			(136	)		—
Shuweihat Asia Operation & Maintenance Company			1,003			55.00	%		552			—			—			(102	)		450
Waterbury Lake Uranium L.P.			56,134			36.97	%		20,753			—			—			561			21,314
ASM-BG Investicii AD			42,977			50.00	%		21,489			—			—			(1	)		21,488
RES Technology AD			27,164			50.00	%		13,582			—			—			—			13,582
KV Holdings, Inc.			5,244			40.00	%		2,098			—			—			—			2,098
KEPCO SPC Power Corporation			326,286			75.20	%		245,367			—			—			—			245,367
Canada Korea Uranium Limited Partnership			141			12.50	%		18			—			—			(18	)		—
Gansu Datang Yumen Wind Power Co., Ltd.			32,053			40.00	%		12,821			—			—			—			12,821
Datang Chifeng Renewable Power Co., Ltd.			416,460			40.00	%		166,584			—			—			(49	)		166,535
Datang KEPCO Chaoyang Renewable Power Co., Ltd.			27,107			40.00	%		10,843			—			—			—			10,843
Rabigh Electricity Company			432,882			40.00	%		173,153			—			(75,311	)		(40	)		97,802
Rabigh Operation & Maintenance Company			11,067			40.00	%		4,427			—			—			—			4,427
Jamaica Public Service Company Limited			631,712			40.00	%		252,685			(80,161	)		—			76,929			249,453
KW Nuclear Components Co., Ltd.			14,427			45.00	%		6,492			90			—			551			7,133
Busan Shinho Solar Power Co., Ltd.			15,256			25.00	%		3,814			—			—			—			3,814
GS Donghae Electric Power Co., Ltd.			605,729			34.00	%		205,948			—			—			—			205,948
Global Trade Of Power System Co., Ltd.			1,643			29.00	%		476			—			—			1			477
Expressway Solar-light Power Generation Co., Ltd.			8,080			29.00	%		2,343			—			—			—			2,343
KODE NOVUS I LLC			(89,966	)		50.00	%		(44,983	)		4,732			—			40,251			—
KODE NOVUS II LLC			(47,031	)		50.00	%		(23,516	)		—			—			23,516			—
Daejung Offshore Wind Power Co., Ltd.			6,042			49.90	%		3,015			—			—			—			3,015

F-105

		2016
Investees		Net assets			Percentage of ownership (*)			Share in net assets			Investment differential		Intercompany transaction		Others			Book value
		In millions of won
Amman Asia Electric Power Company	￦		256,574			60.00	%		153,944			—		—		(87	)		153,857
KAPES, Inc. (formerly, KEPCO-ALSTOM Power Electronics Systems, Inc.)			9,329			51.00	%		4,758			—		—		—			4,758
Dangjin Eco Power Co., Ltd.			148,925			34.00	%		50,635			2,618		—		—			53,253
Honam Wind Power Co., Ltd.			15,239			29.00	%		4,419			32		—		—			4,451
Chun-cheon Energy Co., Ltd.			169,193			29.90	%		50,589			3		—		—			50,592
Yeonggwangbaeksu Wind Power Co., Ltd.			17,892			15.00	%		2,684			5		—		—			2,689
Nghi Son 2 Power Ltd.			455			50.00	%		228			—		—		1			229
Kelar S.A			(94,321	)		65.00	%		(61,309	)		2,424		—		58,885			—
PT. Tanjung Power Indonesia			5,560			35.00	%		1,946			—		—		—			1,946
Incheon New Power Co., Ltd.			1,941			29.00	%		563			—		—		—			563
Seokmun Energy Co., Ltd.			1,349			29.00	%		391			—		—		—			391
Daehan Wind Power PSC			36			50.00	%		18			—		—		(2	)		16
Barakah One Company			658			18.00	%		118			—		—		(2	)		116
Nawah Energy Company			1,645			18.00	%		296			—		—		(6	)		290
MOMENTUM			202			33.33	%		67			—		—		—			67
Daegu Green Power Co., Ltd.			89,421			29.00	%		25,932			84		—		21,512			47,528

(*) The percentage of ownership shown above is after considering the treasury stocks and others.

(6) As of December 31, 2015 and 2016, unrecognized equity interest in investments in associates and joint ventures whose book value has been reduced to zero due to accumulated losses are as follows:

		2015					2016
		Unrecognized equity interest			Accumulated unrecognized equity interest		Unrecognized equity interest			Accumulated unrecognized equity interest
		In millions of won
Green Biomass Co., Ltd.	￦		(125	)		—		—			—
Shin Pyeongtaek Power Co., Ltd.			1,038			1,326		1,211			2,537
Chun-cheon Energy Co., Ltd.			(8	)		—		—			—
Seokmun Energy Co., Ltd.			152			205		(205	)		—
Kelar S.A			17,389			17,389		43,920			61,309
Hadong Mineral Fiber Co., Ltd.			5			5		—			5
PT. Mutiara Jawa			1,351			1,351		554			1,905
Eurasia Energy Holdings			188			188		6			194
KODE NOVUS I LLC			22,789			22,789		22,194			44,983
KODE NOVUS II LLC			11,175			11,175		12,340			23,515
Jungbu Bio Energy Co., Ltd.			—			—		132			132

(7) As of December 31, 2016, shareholders’ agreements on investments in associates and joint ventures that may cause future economic resource or cash outflows are as follows:

(i) Gemeng International Energy Co., Ltd.

Gemeng International Energy Co., Ltd., issued put options on 8% of its shares to its financial investors, KEPCO Woori Sprott PEF (NPSCo-Pa PEF). If the investment fund is not collected until the maturity date (December 25, 2023, two years extension is possible), PEF can exercise the option at strike price which is the same as a principal investment price (including operating fees ratio of below 1% per annum), and also, the Company provided a performance guarantee on this agreement.

(ii) Hyundai Energy Co., Ltd.

The Company had placed guarantees for a fixed return on the investment to NH Power II Co., Ltd. and National Agricultural Cooperative Federation (“NACF”) and had obtained the rights to acquire the investment securities in return preferentially. In addition, NH Power II Co., Ltd. and NACF have a right, which can be exercised for 30 days starting from 2 months to 1 month prior to 17 years after the termination date of the contract to sell their shares to the Company.

F-106

(iii) Taebaek Wind Power Co., Ltd.

In casenon-controlling shareholders decide to dispose of their shares in Taebaek Wind Power Co., Ltd. after the warrant period of defect repair for wind power generator has expired, the Company acquires those shares at fair value. The acquisition is to be made after the conditions of the acquisition are discussed among the parties involved, with consideration of various factors such as financial status and business situation.

(iv) Pyeongchang Wind Power Co., Ltd.

In casenon-controlling shareholders decide to dispose of their shares in Pyeongchang Wind Power Co., Ltd. after commercial operation of the power plant has started, the Company acquires those shares at fair value. The acquisition is to be made after the conditions of the acquisition are discussed among the parties involved, with the careful consideration of various factors such as financial status and business situation.

(v) Jeongam Wind Power Co., Ltd.

In casenon-controlling shareholders decide to dispose of their shares in Jeongam Wind Power Co., Ltd. after the construction of the power plant has been completed, the Company is obligated to acquire those shares at fair value.

(vi) Daejung Offshore Wind Power Co., Ltd.

In case Samsung Heavy Industries Co., Ltd., aco-participant of the joint venture agreement, decides to dispose of its shares in Daejung Offshore Wind Power Co., Ltd., the Company is obligated to acquire those shares after evaluating the economic feasibility of the facilities installed by Samsung Heavy Industries Co., Ltd.

(vii) DS Power Co., Ltd.

The Company has a right to sell all shares and bonds of DS POWER Co., Ltd. to Daesung Industrial Co., Ltd. and Daesung Industrial Co., Ltd. or an authoritativeperson appointed by Daesung Industrial Co., Ltd.

(viii) Samcheok Eco Materials Co., Ltd.

The Company has the rights to purchase the stocks should preferred stockholders elect to sell their stocks on the expected sell date (3 years from preferred stock payment date) and is required to guarantee the promised yield when preferred stockholders sell their stocks.

(ix) Hyundai Green Power Co., Ltd.

As of December 31, 2016, Hyundai Green Power Co., Ltd., an associate of the Company, which engages in the byproduct gas power generating business, entered into a project financing agreement with a limit of ￦919.2 billion with Korea Development Bank and others. At a certain period in the future, the Company has an appraisal right against the financial investors (Korea Development Bank and others) and also has an obligation to sell its shares when claimed by the financial investors. At a certain period in the future, the Company has an appraisal right against Hyundai Steel Company and a third party designated by Hyundai Steel Company (collectively, “Hyundai Steel Company”), the operating investor of Hyundai Green Power Co., Ltd., according to the conditions of the agreement and also has an obligation to sell its shares when claimed by Hyundai Steel Company.

F-107

(8) Significant restrictions on its abilities to associates or joint ventures are as follows:

Company	Nature and extent of any significant restrictions
KNOC Nigerian East Oil Co., Ltd., KNOC Nigerian West Oil Co., Ltd.	The Company has stopped its operation in Nigeria due to an ongoing litigation and payment or retrieval of investments, loans and advances are restricted until the legal dispute is resolved.
Daeryun Power Co., Ltd.	Principals on subordinated loans or dividends can only be paid when all conditions of the loan agreement are satisfied or prior written consent of financial institutions is obtained.
Changjuk Wind Power Co., Ltd.	Principals on subordinated loans or dividends can only be paid when all conditions of the loan agreement are satisfied or prior written consent of financial institutions is obtained.
Taebaek Wind Power Co., Ltd.	Financial institutions can reject or defer an approval with regard to the request for fund executions on subordinated loans of shareholders in order to pay senior loans based on the loan agreement.
Pyeongchang Wind Power Co., Ltd.	Principals on subordinated loans or dividends can only be paid when all conditions of the loan agreement are satisfied or prior written consent of financial institutions is obtained.
Daegu Green Power Co., Ltd.	Principals on subordinated loans or dividends can only be paid when all conditions of the loan agreement are satisfied or prior written consent of financial institutions is obtained. Shares cannot be wholly or partially transferred without prior written consent of financial institutions is obtained.
KS Solar Co., Ltd.	Dividends can only be paid when all conditions of a loan agreement are satisfied.
KNH Solar Co., Ltd.	Principal and interest, dividends to shareholders cannot be paid without written consent of financial institutions.
DS Power Co., Ltd.	Shares cannot be wholly or partially transferred, except as permitted by the agreement.

F-108

18. Property, Plant and Equipment

(1) Property, plant and equipment as of December 31, 2015 and 2016 are as follows:

	2015
	Acquisition cost		Government grants			Accumulated depreciation			Accumulated impairment losses(*)			Book value
	In millions of won
Land	￦	12,396,460		(3,147	)		—			—			12,393,313
Buildings		14,936,722		(63,932	)		(5,259,436	)		(854	)		9,612,500
Structures		58,251,296		(193,119	)		(17,991,950	)		(1,184	)		40,065,043
Machinery		57,143,211		(108,935	)		(20,242,232	)		(36,230	)		36,755,814
Ships		4,930		—			(4,144	)		—			786
Vehicles		227,733		(29	)		(167,261	)		—			60,443
Equipment		1,134,376		(1,026	)		(823,805	)		—			309,545
Tools		836,131		(691	)		(675,501	)		—			159,939
Construction-in- progress		35,305,133		(139,898	)		—			(38,107	)		35,127,128
Finance lease assets		2,389,985		—			(1,878,476	)		—			511,509
Asset retirement costs		6,888,547		—			(2,782,460	)		—			4,106,087
Others		9,438,381		—			(7,179,137	)		—			2,259,244
	￦	198,952,905		(510,777	)		(57,004,402	)		(76,375	)		141,361,351

(*) The Company separately recognizes impairment loss on each asset, reflecting various factors such as physical impairment and others during the replacement.

	2016
	Acquisition cost		Government grants			Accumulated depreciation			Accumulated impairment losses(*)			Book value
	In millions of won
Land	￦	12,969,741		(3,204	)		—			—			12,966,537
Buildings		17,722,326		(61,188	)		(5,936,849	)		(853	)		11,723,436
Structures		63,291,437		(197,641	)		(19,959,839	)		(1,183	)		43,132,774
Machinery		67,769,168		(111,064	)		(24,344,832	)		(2,391	)		43,310,881
Ships		4,175		—			(3,625	)		—			550
Vehicles		247,751		(107	)		(176,781	)		—			70,863
Equipment		1,270,660		(732	)		(894,265	)		—			375,663
Tools		921,115		(430	)		(742,083	)		—			178,602
Construction-in- progress		27,334,368		(135,807	)		—			(38,108	)		27,160,453
Finance lease assets		2,390,779		—			(1,984,426	)		—			406,353
Asset retirement costs		7,129,771		—			(3,064,359	)		—			4,065,412
Others		10,361,294		—			(8,009,762	)		—			2,351,532
	￦	211,412,585		(510,173	)		(65,116,821	)		(42,535	)		145,743,056

(*) The Company separately recognizes impairment loss on each asset, reflecting various factors such as physical impairment and others during the replacement.

F-109

(2) Changes in property, plant and equipment for the years ended December 31, 2015 and 2016 are as follows:

		2015
		Beginning balance			Acquisition			Disposal			Depreciation			Impairment(*1)			Others(*2)			Ending balance
		In millions of won
Land	￦		12,238,488			9,370			(192,496	)		—			—			341,098			12,396,460
(Government grants)			(3,103	)		—			—			—			—			(44	)		(3,147	)
Buildings			8,979,023			12,466			(42,889	)		(633,770	)		—			1,361,602			9,676,432
(Government grants)			(67,700	)		—			—			5,064			—			(1,296	)		(63,932	)
Structures			38,654,777			1,787			(181,914	)		(2,120,749	)		—			3,904,261			40,258,162
(Government grants)			(196,871	)		—			1,816			9,178			—			(7,242	)		(193,119	)
Machinery			35,460,708			430,524			(250,915	)		(3,880,076	)		(1,205	)		5,105,713			36,864,749
(Government grants)			(108,750	)		—			1,101			11,133			—			(12,419	)		(108,935	)
Ships			1,085			—			—			(299	)		—			—			786
Vehicles			50,576			5,449			(27	)		(22,175	)		—			26,649			60,472
(Government grants)			(76	)		—			1			47			—			(1	)		(29	)
Equipment			211,647			56,004			(230	)		(103,889	)		—			147,039			310,571
(Government grants)			(1,002	)		—			—			469			—			(493	)		(1,026	)
Tools			152,777			25,940			(90	)		(67,482	)		—			49,485			160,630
(Government grants)			(862	)		—			—			268			—			(97	)		(691	)
Construction-in-progress			32,379,512			13,508,590			(13,658	)		—			(29,139	)		(10,578,279	)		35,267,026
(Government grants)			(123,938	)		(27,239	)		—			—			—			11,279			(139,898	)
Finance lease assets			612,395			1,560			(3,959	)		(110,162	)		—			11,675			511,509
Asset retirement costs			5,354,427			—			—			(551,461	)		—			(696,879	)		4,106,087
Others			2,219,386			25,436			(98	)		(804,545	)		—			819,065			2,259,244
	￦		135,812,499			14,049,887			(683,358	)		(8,268,449	)		(30,344	)		481,116			141,361,351

(*1) Korea South-East Power Co., Ltd. and Korea East-West Power Co., Ltd, 100% owned subsidiaries, have determined that there is an impairment indicator and performed an impairment test over the individual assets. As a result, the Company recognized the amount of the carrying amount in excess of its recoverable amount as impairment loss in the consolidated statements of comprehensive income.

(*2) ‘Others’ include ￦23,273 million of land and buildings that were reclassified to assets held for sale (note 42) comprising ￦2,907 million of land and ￦20,366 million of buildings.

F-110

		2016
		Beginning balance			Acquisition			Disposal			Depreciation			Impairment		Others(*1)			Ending balance
		In millions of won
Land	￦		12,396,460			13,973			(52,569	)		—			—		611,877			12,969,741
(Government grants)			(3,147	)		—			14			—			—		(71	)		(3,204	)
Buildings			9,676,432			—			(9,020	)		(676,866	)		—		2,794,078			11,784,624
(Government grants)			(63,932	)		—			731			5,299			—		(3,286	)		(61,188	)
Structures			40,258,162			455			(524,310	)		(2,233,333	)		—		5,829,441			43,330,415
(Government grants)			(193,119	)		—			2,597			9,491			—		(16,610	)		(197,641	)
Machinery			36,864,749			193,017			(243,757	)		(4,353,596	)		—		10,961,532			43,421,945
(Government grants)			(108,935	)		(33	)		1,210			12,272			—		(15,578	)		(111,064	)
Ships			786			—			—			(281	)		—		45			550
Vehicles			60,472			2,493			(34	)		(27,615	)		—		35,654			70,970
(Government grants)			(29	)		(58	)		—			25			—		(45	)		(107	)
Equipment			310,571			67,134			(323	)		(128,084	)		—		127,097			376,395
(Government grants)			(1,026	)		—			—			452			—		(158	)		(732	)
Tools			160,630			27,856			(327	)		(69,842	)		—		60,715			179,032
(Government grants)			(691	)		—			—			295			—		(34	)		(430	)
Construction-in-progress			35,267,026			11,752,352			(94,443	)		—			—		(19,628,675	)		27,296,260
(Government grants)			(139,898	)		(28,434	)		—			—			—		32,525			(135,807	)
Finance lease assets			511,509			34			(31	)		(96,254	)		—		(8,905	)		406,353
Asset retirement costs			4,106,087			—			—			(509,310	)		—		468,635			4,065,412
Others			2,259,244			—			(9	)		(813,248	)		—		905,545			2,351,532
	￦		141,361,351			12,028,789			(920,271	)		(8,880,595	)		—		2,153,782			145,743,056

(*1) ‘Others’ include loaded nuclear fuel related to raw materials and asset retirement costs.

19. Investment Properties

(1) Investment properties as of December 31, 2015 and 2016 are as follows:

		2015
		Acquisition cost		Government grants			Accumulated depreciation			Book value
		In millions of won
Land	￦		253,960		—			—			253,960
Buildings			27,655		(13	)		(11,692	)		15,950
	￦		281,615		(13	)		(11,692	)		269,910

		2016
		Acquisition cost		Government grants			Accumulated depreciation			Book value
		In millions of won
Land	￦		336,421		—			—			336,421
Buildings			29,168		(64	)		(11,845	)		17,259
	￦		365,589		(64	)		(11,845	)		353,680

(2) Changes in investment properties for the years ended December 31, 2015 and 2016 are as follows:

		2015
		Beginning balance			Depreciation			Others			Ending balance
		In millions of won
Land	￦		301,483			—			(47,523	)		253,960
Buildings			15,791			(669	)		841			15,963
(Government grants)			(10	)		—			(3	)		(13	)
	￦		317,264			(669	)		(46,685	)		269,910

F-111

		2016
		Beginning balance			Depreciation			Others			Ending balance
		In millions of won
Land	￦		253,960			—			82,461			336,421
Buildings			15,963			(679	)		2,039			17,323
(Government grants)			(13	)		1			(52	)		(64	)
	￦		269,910			(678	)		84,448			353,680

(3) Income and expenses related to investment properties for the years ended December 31, 2015 and 2016 are as follows:

		2015			2016
		In millions of won
Rental income	￦		10,931			9,460
Operating and maintenance expenses related to rental income			(669	)		(678	)
	￦		10,262			8,782

(4) Fair value of investment properties as of December 31, 2015 and 2016 are as follows:

		2015				2016
		Book value		Fair value		Book value		Fair value
		In millions of won
Land	￦		253,960		284,423		336,421		374,042
Buildings			15,950		18,263		17,259		20,708
	￦		269,910		302,686		353,680		394,750

The fair values of the investment properties as of the reporting date were determined in consideration of the fluctuation on the publicly announced individual land price after the IFRS transition date (January 1, 2010).

(5) All of the Company’s investment property is held under freehold interests.

20. Construction Services Contracts

(1) Changes in total contract amount in which revenue is not yet recognized for the years ended December 31, 2014, 2015 and 2016 are as follows:

		2014
		Beginning balance		Increase and decrease(*)		Recognized as revenue			Ending balance
		In millions of won
Nuclear power plant construction in UAE and others	￦		19,333,416		712,843		(2,965,185	)		17,081,074

(*) For the year ended December 31, 2014, the increased balance of contracts from new orders and other is ￦831,159 million and the decreased balance of contracts due to changes in scope of construction work is ￦118,316 million.

F-112

		2015
		Beginning balance		Increase and decrease(*)			Recognized as revenue			Ending balance
		In millions of won
Nuclear power plant construction in UAE and others	￦		17,081,074		(1,011,031	)		(3,761,204	)		12,308,839

(*) For the year ended December 31, 2015, the increased balance of contracts from new orders and other is ￦412,617 million and the decreased balance of contracts due to changes in scope of construction work is ￦1,423,648 million.

		2016
		Beginning balance		Increase and decrease(*)			Recognized as revenue			Ending balance
		In millions of won
Nuclear power plant construction in UAE and others	￦		12,308,839		(1,045,094	)		(4,026,857	)		7,236,888

(*) For the year ended December 31, 2016, the increased balance of contracts from new orders and other is ￦718,118 million and the decreased balance of contracts due to changes in scope of construction work is ￦1,763,212 million.

(2) Accumulated earned revenue, expense and others related to the Company’s construction contracts as of December 31, 2015 and 2016 are as follows:

		2015
		Accumulated earned revenue		Accumulated expense		Accumulated profit		Unearned advance receipts
		In millions of won
Nuclear power plant construction in UAE and others	￦		12,224,934		11,573,516		651,418		—

		2016
		Accumulated earned revenue		Accumulated expense		Accumulated profit		Unearned advance receipts
		In millions of won
Nuclear power plant construction in UAE and others	￦		15,314,737		14,396,890		917,847		—

(3) Gross amount due from customers recognized as assets and due to customers recognized as liabilities for contract work as of December 31, 2015 and 2016 are as follows:

		2015				2016
		Assets(*1)		Liabilities(*2)		Assets(*1)		Liabilities(*2)
		In millions of won
Nuclear power plant construction in UAE and others	￦		55,317		893,992		44,930		651,985

(*1) Included in trade and other receivables, net, in the consolidated statements of financial position.

(*2) Included innon-financial liabilities in the consolidated statements of financial position.

F-113

21. Intangible Assets other than Goodwill

(1) Intangible assets as of December 31, 2015 and 2016 are as follows:

		2015
		Acquisition cost		Government grants			Accumulated amortization			Accumulated impairment losses			Book value
		In millions of won
Software	￦		389,220		(699	)		(331,334	)		—			57,187
Licenses and franchises			3,398		—			(3,398	)		—			—
Copyrights, patents rights and other industrial rights			34,178		—			(12,303	)		—			21,875
Mining rights			508,392		—			(8,855	)		—			499,537
Development expenditures			751,784		(6,835	)		(699,977	)		—			44,972
Intangible assets under development			94,886		(10,483	)		—			—			84,403
Usage rights of donated assets and other			375,275		(32	)		(326,684	)		—			48,559
Leasehold rights			19,112		—			(18,367	)		—			745
Greenhouse gas emissions rights			805		—			—			—			805
Others			189,941		(1	)		(80,067	)		(12,124	)		97,749
	￦		2,366,991		(18,050	)		(1,480,985	)		(12,124	)		855,832

		2016
		Acquisition cost		Government grants			Accumulated amortization			Accumulated impairment losses			Book value
		In millions of won
Software	￦		458,382		(595	)		(365,161	)		—			92,626
Licenses and franchises			3,398		—			(3,398	)		—			—
Copyrights, patents rights and other industrial rights			35,756		—			(15,675	)		—			20,081
Mining rights			549,371		—			(10,511	)		—			538,860
Development expenditures			785,966		(5,152	)		(723,561	)		—			57,253
Intangible assets under development			119,474		(11,090	)		—			(3,941	)		104,443
Usage rights of donated assets and other			426,346		(21	)		(342,244	)		—			84,081
Leasehold rights			23,350		—			(18,718	)		—			4,632
Greenhouse gas emissions rights			6,283		—			—			—			6,283
Others			173,213		—			(88,527	)		(12,124	)		72,562
	￦		2,581,539		(16,858	)		(1,567,795	)		(16,065	)		980,821

F-114

(2) Changes in intangible assets for as of December 31, 2015 and 2016 are as follows:

		2015
		Beginning balance			Acquisition			Disposal			Amortization			Impairment			Others			Ending balance
		In millions of won.
Software	￦		52,556			10,477			(2	)		(29,795	)		187			24,463			57,886
(Government grants)			(488	)		—			—			177			—			(388	)		(699	)
Licenses and franchises			54			—			—			(54	)		—			—			—
Copyrights, patents rights and other industrial rights			22,677			129			(2	)		(2,866	)		—			1,937			21,875
Mining rights			504,214			23,151			—			(228	)		—			(27,600	)		499,537
Development expenditures			55,857			8,096			(5	)		(24,862	)		—			12,721			51,807
(Government grants)			(8,183	)		—			—			2,937			—			(1,589	)		(6,835	)
Intangible assets under development			74,909			40,300			—			—			(22	)		(20,301	)		94,886
(Government grants)			(10,692	)		(1,884	)		—			—			—			2,093			(10,483	)
Usage rights of donated assets and other			57,687			—			—			(9,096	)		—			—			48,591
(Government grants)			(43	)		—			—			11			—			—			(32	)
Leasehold rights			779			—			—			(34	)		—			—			745
Greenhouse gas emissions rights			—			805			—			—			—			—			805
Others			71,734			6,872			(443	)		(8,456	)		88			27,955			97,750
(Government grants)			(1	)		—			—			—			—			—			(1	)
	￦		821,060			87,946			(452	)		(72,266	)		253			19,291			855,832

		2016
		Beginning balance			Acquisition			Disposal			Amortization			Impairment			Others			Ending balance
		In millions of won
Software	￦		57,886			18,267			—			(32,378	)		—			49,446			93,221
(Government grants)			(699	)		—			—			249			—			(145	)		(595	)
Licenses and franchises
Copyrights, patents rights and other industrial rights			21,875			85			(39	)		(2,697	)		—			857			20,081
Mining rights			499,537			26,311			—			(899	)		—			13,911			538,860
Development expenditures			51,807			212			—			(21,993	)		—			32,379			62,405
(Government grants)			(6,835	)		—			—			2,771			—			(1,088	)		(5,152	)
Intangible assets under development			94,886			66,588			—			—			(3,945	)		(41,996	)		115,533
(Government grants)			(10,483	)		(1,597	)		—			—			—			990			(11,090	)
Usage rights of donated assets and other			48,591			—			—			(15,513	)		—			51,024			84,102
(Government grants)			(32	)		—			—			11			—			—			(21	)
Leasehold rights			745			—			—			(351	)		—			4,238			4,632
Greenhouse gas emissions rights			805			6,283			—			—			—			(805	)		6,283
Others			97,750			8,273			(550	)		(8,916	)		3			(23,998	)		72,562
(Government grants)			(1	)		—			—			1			—			—			—
	￦		855,832			124,422			(589	)		(79,715	)		(3,942	)		84,813			980,821

F-115

(3) Significant specific intangible assets as of December 31, 2015 and 2016 are as follows:

2015
Type	Description	Currency	Amount		Remaining useful years
	In millions of won and thousands of Australian dollars
Software	ERP system and others	KRW		1,293	2 months ~ 2 years and 11 months
Copyrights, patents rights and other industrial rights	Smart technology verification and standard design project conducting right	KRW		6,750	6 years and 9 months
Mining rights	Mining right of Bylong mine	AUD		401,225	—   (*)
Development expenditures	KOSPO Evolutionary Efficient & Powerful System(KEEPS)	KRW		2,104	1 year and 6 months
Development expenditures	Development of maintenance system for utility plant	KRW		1,084	1 year and 11 months
Intangible assets under development	Contributions to ARP NRC DC	KRW		29,148	—
Intangible assets under development	CHF testing for best representative of HIPER/X2-Gen Fuel and development of best explanatory CHF correlation	KRW		9,871	—
Usage rights of donated assets	Songdo international business district(sector 1, 3) sharing charge	KRW		2,793	1 year and 10 months
Usage rights of donated assets	Dangjin power plant load facility usage right	KRW		33,055	5 years and 3 months
Others	Shingwangju electricity supply facility usage right	KRW		2,297	3 years and 5 months
Others	Sillim electricity supply facility usage right	KRW		2,642	5 years and 11 months

(*) Mining rights are amortized using theunits-of-production method and the amortization has not commenced yet.

F-116

2016
Type	Description	Currency	Amount		Remaining useful years
	In millions of won and thousands of Australian dollars
Software	ERP system and others	KRW		506	11 months ~ 1 year and 11 months
	SCADA O/S (POWERON RELIANCE)	KRW		4,206	3 years and 1 month
Copyrights, patents rights and other industrial rights	Smart technology verification and standard design project conducting right	KRW		5,750	5 years and 9 months
Mining rights	Mining right of Bylong mine	AUD		401,225	—  (*)
Development expenditures	Development of maintenance system for utility plant	KRW		518	11 months
Intangible assets under development	Contributions to ARP NRC DC	KRW		41,190	—
Usage rights of donated assets	Sejong Haengbogdosi sharing charge	KRW		44,502	9 years and 11 months
	Dangjin power plant load facility usage right	KRW		26,759	4 years and 3 months
Others	Sillim electricity supply facility usage right	KRW		2,196	4 years and 11 months

(*) Mining rights are amortized using theunits-of-production method and the amortization has not commenced yet.

(4) For the years ended December 31, 2015 and 2016, the Company recognized research and development expenses of￦611,220 million and￦705,504 million, respectively.

22. Trade and Other Payables

Trade and other payables as of December 31, 2015 and 2016 are as follows:

		2015				2016
		Current		Non-current		Current		Non-current
		In millions of won
Trade payables	￦		1,957,647		—		2,610,373		—
Other trade payables			1,379,035		3,048,299		1,498,582		3,033,780
Accrued expenses			1,082,880		2,373		1,152,933		2,161
Leasehold deposits received			2,451		—		1,426		1,008
Other deposits received			195,237		105,105		197,711		93,751
Finance lease liabilities			116,885		542,509		121,176		420,003
Dividends payable			1,562		—		3,204		—
Others(*)			—��		20,149		6		7,472
	￦		4,735,697		3,718,435		5,585,411		3,558,175

(*) Details of others as of December 31, 2015 and 2016 are as follows:

		2015				2016
		Current		Non-current		Current		Non-current
		In millions of won
Advance received from local governments	￦		—		20,149		—		7,472
Others			—		—		6		—
	￦		—		20,149		6		7,472

F-117

23. Borrowings and Debt Securities

(1) Borrowings and debt securities as of December 31, 2015 and 2016 are as follows:

		2015			2016
		In millions of won
Current liabilities
Short-term borrowings	￦		603,673			805,523
Current portion of long-term borrowings			541,307			310,977
Current portion of debt securities			6,704,602			7,825,310
Less : Current portion of discount on long-term borrowings			(953	)		(979	)
Less : Current portion of discount on debt securities			(1,676	)		(1,753	)
			7,846,953			8,939,078
Non-current liabilities
Long-term borrowings			1,951,119			1,799,750
Debt securities			49,077,131			43,012,960
Less : Discount on long-term borrowings			(18,860	)		(25,859	)
Less : Discount on debt securities			(103,067	)		(86,880	)
Add: Premium on debt securities			223			156
			50,906,546			44,700,127
	￦		58,753,499			53,639,205

(2) Repayment schedule of borrowings and debt securities as of December 31, 2015 and 2016 are as follows:

2015
Type		Borrowings		Debt Securities
		In millions of won
Less than 1 year	￦		1,144,980		6,704,602
1 ~ 5 years			860,351		27,725,651
Over 5 years			1,090,768		21,351,480
	￦		3,096,099		55,781,733

2016
Type		Borrowings		Debt Securities
		In millions of won
Less than 1 year	￦		1,116,500		7,825,310
1 ~ 5 years			295,162		24,462,410
Over 5 years			1,504,588		18,550,550
	￦		2,916,250		50,838,270

F-118

(3) Short-term borrowings as of December 31, 2015 and 2016 are as follows:

2015
Type	Creditor	Interest rate (%)		Maturity		Foreign currency			Local currency
	In millions of won and thousands of U.S. dollars
Local short-term borrowings	Woori Investment Bank and others		1.80~2.46		2016.01.04~ 2016.09.13		—	￦		559,530
Foreign short-term borrowings	ING and others		6.50		2016.12.03		USD 2,163			2,535
Foreign short-term borrowings	Citi Bank and others		3M Libor+0.35		2016.03.22		USD 12,265			14,375
Local bank overdraft	Woori Bank		Standard overdraft rate+1.12		2016.02.25		—			27,233
								￦		603,673

2016
Type	Creditor	Interest rate (%)		Maturity		Foreign currency			Local currency
	In millions of won and thousands of foreign currencies
Local short-term borrowings	Woori Investment Bank and others		1.54~2.51		2017.01.25~ 2017.09.13		—	￦		436,800
Foreign short-term borrowings	SCNT and others		1.58~6.50		2017.03.30~ 2017.12.03		USD 35,086			42,401
Foreign short-term borrowings	Export-import Bank of Korea		3M Libor+0.54~0.63		2017.05.17~ 2017.12.18		AUD 311,174			271,360
Local bank overdraft	Nonghyup Bank		2.45		2017.01.05		—			37,000
Local bank overdraft	Woori Bank		Standard overdraft rate+1.12		2017.02.25		—			17,962
								￦		805,523

F-119

(4) Long-term borrowings as of December 31, 2015 and 2016 are as follows:

2015
Type		Interest rate (%)	Maturity	Foreign currency		Local currency
		In millions of won and thousands of foreign currencies
Local long-term borrowings
Korea Development Bank	Others	0.50	2018~2044		—	￦	6,418
	Facility	2.67~4.60	2023~2028		—		52,437
	Facility	3yr KTBrate-1.25	2027		—		9,000
	Facility	1yr KoFC bond rate +0.31	2018		—		200,000
	Operating funds	2.75	2018		—		12,000
KEB Hana Bank	Commercial Paper	3M CD+0.03~0.54	2016~2017		—		500,000
	Facility	3yr KTBrate-1.25	2021~2028		—		10,363
	Facility	4.60	2028		—		18,411
	Energy rationalization	3yr KTBrate-1.25	2019		—		650
	Energy rationalization	3.20~3.70	2021~2022		—		3,835
Korea Industrial Bank	PF Refinancing	CD+1.25	2030		—		22,500
	Others	3yr KTBrate-1.25	2016		—		4,000
Export-Import Bank of Korea	Project loans	2.00	2026		—		30,935
Korea Resources Corporation	Development of power resources	3yr KTBrate-2.25	2022~2027		—		44,674
	Facility	3yr KTBrate-2.25	2023~2024		—		4,400
	Project loans	—	2022~2027		—		8,677
	Others	3yr KTBrate-2.25	2024~2025		—		13,057
Shinhan Bank and others	Collateral borrowing	2.22	2017		—		30,000
	Facility	3yrAA- CB rate+1.10	2028		—		27,617
	Operating funds	2.70~3.35	2017~2018		—		25,000
Kookmin Bank	Facility	MOR+0.62~0.79	2017~2023		—		25,300
Others	Facility	4.60~5.80	2025~2028		—		144,359
	Facility	3yrAA- CB rate+1.10	2028		—		18,411
	PF Refinancing	4.10	2030		—		62,500
	Others	—	2020~2036		—		45,847
	Others	—	2028		—		7,250
							1,327,641
Foreign long-term borrowings
Korea National Oil Corporation	Project loans	—	2021~2023		USD 8,744		10,248
Export-Import Bank of Korea and others	Direct loan and others	3M Libor+2.75~ 3.70	2027		JOD 188,580		312,104
	Commercial loan and others	3M Libor+1.50~ 2.50	2030~2033		USD 312,601		366,368
	PF Loan	6M Libor+2.50~ 2.70	2032		USD 64,389		75,464
SCNT and others	Shareholder’s loan	6.50~8.00	2023		USD 34,924		40,931
	Shareholder’s loan	8.00	2031		JOD 7,128		11,797

F-120

2015
Type		Interest rate (%)	Maturity	Foreign currency		Local currency
		In millions of won and thousands of foreign currencies
PT PJB and others	Shareholder’s loan	12.75	2017		IDR 22,346,550		1,899
HSBC and others	Syndicated loan	3M Libor+0.30~ 0.50	2017~2019		USD 31,774		37,239
IFC and others	Others	6M Libor+5.00	2031		PKR 5,891,200		65,805
Others	Others	3M Libor+0.65	2017		USD 199,269		233,543
	Others	—	2019		USD 8,010		9,387
							1,164,785
							2,492,426
Less : Discount of long-term borrowings							(19,813	)
Less : Current portion of long-term borrowings							(541,307	)
Add : Current portion of discount of long-term borrowings							953
						￦	1,932,259

2016
Type		Interest rate (%)	Maturity	Foreign currency		Local currency
		In millions of won and thousands of foreign currencies
Local long-term borrowings
Korea Development Bank	Others	0.50	2018~2044		—	￦	5,663
	Facility	2.45~4.60	2023~2028		—		61,835
	Facility	1yr KoFC bond rate+ 0.31	2018		—		125,000
	Operating funds	2.75	2018		—		12,000
KEB Hana Bank	Commercial Paper	3M CD+0.14	2017		—		100,000
	Facility	4.60	2028		—		16,851
	Facility	3yr KTBrate-1.25	2017~2028		—		9,655
Korea Industrial Bank	PF Refinancing	CD+1.25	2030		—		22,500
Export-Import Bank of Korea	Project loans	1.50	2026		—		30,935
Korea Resources Corporation	Development of power resources	3yr KTB rate-2.25	2022~2025		—		14,039
	Facility	3yr KTB rate-2.25	2017~2024		—		3,842
	Project loans	—	2022~2025		—		3,733
	Others	KTB rate-2.25	2024~2025		—		12,131
Shinhan Bank	Collateral borrowing	2.22	2017		—		30,000
	Facility	CB rate+1.10	2028		—		25,276
	Operating funds	2.70~2.86	2017~2018		—		25,000
	Others	4.10	2035		—		55,000
	Others	3yr KTB rate+1.10	2035		—		55,000
Kookmin Bank	Facility	MOR+0.62 ~ 0.79	2017~2023		—		45,000
Others	Facility	1.75~4.60	2026~2029		—		146,472
	Facility	CB rate+1.10 ~1.20	2022~2028		—		34,951
	PF Refinancing	4.10	2030		—		62,500
	Others	8.00	2036		—		102,347
	Others	—	2028		—		7,250
							1,006,980

F-121

2016
Type		Interest rate (%)	Maturity	Foreign currency		Local currency
		In millions of won and thousands of foreign currencies
Foreign long-term borrowings
Korea National Oil Corporation	Project loans	—	2021~2023		USD 8,744		10,567
Export-Import Bank of Korea and others	Direct loan and others	3M Libor+2.75~ 3.70	2027		JOD 178,892		305,332
	Commercial loan and others	3M Libor+1.50~ 2.50	2030~2033		USD 299,859		362,379
	PF Loan	6M Libor+2.50~ 2.70	2032		USD 119,647		144,594
SCNT and others	Shareholder’s loan	6.50~8.00	2023		USD 40,618		49,086
	Shareholder’s loan	8.00	2031		JOD 7,128		12,166
PT PJB	Shareholder’s loan	12.75	2019		IDR 16,705,505		1,500
Samsung Life Insurance and others	Syndicated Loan	3.10	2032		JPY 1,758,000		18,227
Woori Bank and others	Syndicated Loan	JPY 6M Libor+2.10	2032		JPY 1,172,000		12,151
SMBC and others	Equity Bridge Loan	1M Libor+0.90	2019		USD 37,978		45,897
IFC and others	Others	6M Libor+5.00	2031		PKR 11,706,160		134,972
Others	Others	—	2019		USD 5,691		6,876
							1,103,747
							2,110,727
Less : Discount of long-term borrowings							(26,838	)
Less : Current portion of long-term borrowings							(310,977	)
Add : Current portion of discount on long-term borrowings							979
						￦	1,773,891

(5) Local debt securities as of December 31, 2015 and 2016 are as follows:

	Issue date		Maturity		Interest rate (%)		2015			2016
	In millions of won
Electricity Bonds(*1)		2009.12.03~ 2014.08.27		2017.01.05~ 2033.08.06	2.73~5.51	￦		22,960,000			19,860,000
Electricity Bonds		2012.07.10~ 2013.06.25		2017.07.10~ 2018.06.25	3M CD+0.31~0.32			910,000			310,000
Corporate Bonds(*2)		2009.05.04~ 2016.12.02		2017.01.17~ 2040.12.10	1.36~5.84			20,710,010			19,552,708
								44,580,010			39,722,708
Less : Discount on local debt securities								(40,228	)		(34,667	)
Less : Current portion of local debt securities								(5,730,000	)		(5,650,010	)
Add : Current portion of discount on local debt securities								1,187			728
						￦		38,810,969			34,038,759

(*1) Electricity Bonds 885 (￦40,000 million) can be redeemed every April 28 after three years from its issue date, April 28, 2014.

(*2) Corporate Bonds of HeeMang Sunlight Power Co., Ltd (￦2,697 million) can be redeemed every March 31 after five years from its issue date, March 31, 2016.

F-122

(6) Foreign debt securities as of December 31, 2015 and 2016 are as follows:

	2015
Type	Issue date		Maturity		Interest rate (%)	Foreign currency			Local currency
	In millions of won and thousands of foreign currencies
FY-96		1996.04.01~ 1996.12.06		2026.12.06~ 2096.04.01	6.00~8.37		USD 249,136	￦		291,990
FY-97		1997.01.31~ 1997.08.04		2027.02.01~ 2027.08.01	6.75~7.00		USD 314,717			368,848
FY-04		2004.04.23		2034.04.23	5.13		USD 286,920			336,270
FY-06		2006.03.14~ 2006.09.29		2016.03.14~ 2016.09.29	5.50~6.00		USD 650,000			761,800
FY-08		2008.11.27		2018.11.27	4.19		JPY 20,000,000			194,401
FY-11		2011.07.13~ 2011.07.29		2017.01.30~ 2021.07.13	3.63~4.75		USD 800,000			937,600
FY-12		2012.05.10~ 2012.09.19		2017.05.10~ 2022.09.19	2.50~3.13		USD 1,750,000			2,051,000
FY-13		2013.02.05~ 2013.11.27		2018.02.05~ 2018.11.27	1.88~2.88		USD 1,900,000			2,226,800
FY-13		2013.09.26~ 2013.10.23		2019.03.26~ 2019.04.23	1.50~1.63		CHF 400,000			474,156
FY-13		2013.09.25		2020.09.25	5.75		AUD 325,000			277,258
FY-13		2013.02.20~ 2013.07.25		2018.02.20~ 2018.07.25	3M Libor+0.84~1.50		USD 500,000			586,000
FY-14		2014.02.11~ 2014.12.02		2019.02.11~ 2029.07.30	2.38~3.57		USD 1,500,000			1,758,000
FY-14		2014.01.28~ 2014.07.31		2017.01.28~ 2017.07.31	3M Libor+0.55~1.05		USD 500,000			586,000
FY-15		2015.06.15		2025.06.15	3.25		USD 300,000			351,600
										11,201,723
Less : Discount on foreign debt securities										(64,515	)
Add : Premium on foreign debt securities										223
Less : Current portion of foreign debt securities										(974,602	)
Add : Current portion of discount on foreign debt securities										489
								￦		10,163,318

F-123

	2016
Type	Issue date		Maturity		Interest rate (%)	Foreign currency			Local currency
	In millions of won and thousands of foreign currencies
FY-96		1996.04.01~ 1996.12.06		2026.12.06~ 2096.04.01	6.00~8.37		USD 249,068	￦		300,999
FY-97		1997.01.31~ 1997.08.04		2027.02.01~ 2027.08.01	6.75~7.00		USD 314,717			380,335
FY-04		2004.04.23		2034.04.23	5.13		USD 286,920			346,743
FY-08		2008.11.27		2018.11.27	4.19		JPY 20,000,000			207,362
FY-11		2011.07.13~ 2011.07.29		2017.01.30~ 2021.07.13	3.63~4.75		USD 800,000			966,800
FY-12		2012.05.10~ 2012.09.19		2017.05.10~ 2022.09.19	2.50~3.13		USD 1,750,000			2,114,875
FY-13		2013.02.05~ 2013.11.27		2018.02.05~ 2018.11.27	1.88~2.88		USD 1,900,000			2,296,150
FY-13		2013.09.26~ 2013.10.23		2019.03.26~ 2019.04.23	1.50~1.63		CHF 400,000			472,532
FY-13		2013.09.25		2020.09.25	5.75		AUD 325,000			283,416
FY-13		2013.02.20~ 2013.07.25		2018.02.20~ 2018.07.25	3M Libor+0.84~1.50		USD 500,000			604,250
FY-14		2014.02.11~ 2014.12.02		2019.02.11~ 2029.07.30	2.38~3.57		USD 1,500,000			1,812,750
FY-14		2014.01.28~ 2014.07.31		2017.01.28~ 2017.07.31	3M Libor+0.55~1.05		USD 500,000			604,250
FY-15		2015.06.15		2025.06.15	3.25		USD 300,000			362,550
FY-16		2016.01.21		2021.07.21	2.50		USD 300,000			362,550
										11,115,562
Less : Discount on foreign debt securities										(53,966	)
Add : Premium on foreign debt securities										156
Less : Current portion of foreign debt securities										(2,175,300	)
Add : Current portion of discount on foreign debt securities										1,025
								￦		8,887,477

24. Finance Lease Liabilities

(1) Lease contracts

The Company enters into power purchase agreements (“PPA”) with GS EPS and three other providers. The Company recognizes these PPAs as finance leases; under the PPAs, there is no transfer of ownership or bargain purchase option of the plants at the end of the agreement, however, the present value of the future minimum power purchase payments equals substantially all of the plants’ respective fair values over a twenty-year period which makes up the major part of the respective plants’ economic life.

F-124

(2) Finance lease liabilities as of December 31, 2015 and 2016 are as follows and are included in current andnon-current trade and other payables, net, in the consolidated statements of financial position:

		2015				2016
		Minimum lease payments		Present value of minimum lease payments		Minimum lease payments		Present value of minimum lease payments
		In millions of won
Less than 1 year	￦		182,072		116,885		175,512		121,176
1 ~ 5 years			525,465		393,957		404,029		306,282
More than 5 years			206,323		148,552		152,247		113,721
	￦		913,860		659,394		731,788		541,179

(3) Current andnon-current portion of financial lease liabilities as of December 31, 2015 and 2016 are as follows:

		2015		2016
		In millions of won
Current finance lease liabilities	￦		116,885		121,176
Non-current finance lease liabilities			542,509		420,003
	￦		659,394		541,179

(4) Lease payments recognized as an expense from a lessee position for the years ended December 31, 2015 and 2016 are as follows:

		2015			2016
		In millions of won
Minimum lease payment	￦		194,960			177,585
Contingent rent payment			(17,682	)		(20,956	)

(5) The Company does not have any irrevocable operating lease contracts as of December 31, 2015 and 2016.

25. Employment Benefits

(1) Employment benefit obligations as of December 31, 2015 and 2016 are as follows:

		2015		2016
		In millions of won
Net defined benefit obligations	￦		1,495,782		1,678,470
Other long-term employee benefit obligations			7,325		7,788
	￦		1,503,107		1,686,258

(2) Principal assumptions on actuarial valuation as of December 31, 2015 and 2016 are as follows:

	2015		2016
Discount rate		2.39%~2.58%		2.45%~2.64%
Future salary and benefit levels		5.43%		5.23%
Weighted average duration		13.21 years		13.34 years

F-125

(3) Details of expense relating to defined benefit plans for the years ended December 31, 2015 and 2016 are as follows:

		2015			2016
		In millions of won
Current service cost	￦		315,811			378,930
Interest cost			63,808			67,104
Expected return on plan assets			(22,557	)		(23,612	)
Loss from settlement			(641	)		(706	)
	￦		356,421			421,716

Expenses as described above are recognized in those items below in the financial statements.

		2015		2016
		In millions of won
Cost of sales	￦		262,760		312,391
Selling and administrative expenses			51,932		61,362
Others(Construction-in-progress and others)			41,729		47,963
	￦		356,421		421,716

In addition, for the years ended December 31, 2015 and 2016, employee benefit obligations expenses of ￦57,940 million and ￦62,435 million, respectively, are recognized as cost of sales, and ￦9,971 million and ￦11,450 million, respectively, are recognized as selling and administrative expenses, and ￦14,195 million and ￦14,024 million, respectively, are recognized asconstruction-in-progress and others, related to the Company’s defined contribution plans.

(4) Details of defined benefit obligations as of December 31, 2015 and 2016 are as follows:

		2015			2016
		In millions of won
Present value of defined benefit obligation from funded plans	￦		2,426,414			2,867,377
Fair value of plan assets			(930,632	)		(1,188,907	)
			1,495,782			1,678,470
Present value of defined benefit obligation from unfunded plans			—			—
Net liabilities incurred from defined benefit plans	￦		1,495,782			1,678,470

(5) Changes in the present value of defined benefit obligations for the years ended December 31, 2015 and 2016 are as follows:

		2015			2016
		In millions of won
Beginning balance	￦		1,992,447			2,426,414
Current service cost			315,811			378,930
Interest cost(*)			63,808			67,104
Remeasurement component			122,825			120,993
Loss from settlement			(641	)		(707	)
Actual payments			(67,291	)		(125,233	)
Others			(545	)		(124	)
Ending balance	￦		2,426,414			2,867,377

(*) Corporate bond (AAA rated) yield atyear-end is applied to the interest cost on employee benefit obligations.

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(6) Changes in the fair value of plan assets for the years ended December 31, 2015 and 2016 are as follows:

		2015			2016
		In millions of won
Beginning balance	￦		724,250			930,632
Expected return			22,557			23,612
Remeasurement component			(5,924	)		(5,706	)
Contributions by the employers			214,449			312,125
Actual payments			(24,191	)		(71,756	)
Others			(509	)		—
Ending balance	￦		930,632			1,188,907

In addition, loss on accumulated remeasurement component amounting to ￦202,878 million and ￦222,997 million has been recognized as other comprehensive income or loss for the years ended December 31, 2015 and 2016, respectively.

(7) Details of the fair value of plan assets as of December 31, 2015 and 2016 are as follows:

		2015		2016
		In millions of won
Equity instruments	￦		12,791		86,054
Debt instruments			243,372		383,654
Bank deposit			129,350		305,670
Others			545,119		413,529
	￦		930,632		1,188,907

For the years ended December 31, 2015 and 2016, actual returns on plan assets amounted to ￦16,633 million and ￦17,906 million, respectively.

(8) Remeasurement component recognized in other comprehensive income (loss) for the years ended December 31, 2015 and 2016 are as follows:

		2015			2016
		In millions of won
Actuarial gain (loss) from changes in financial assumptions	￦		140,411			(27,792	)
Experience adjustments			(17,586	)		148,785
Expected return			5,924			5,706
	￦		128,749			126,699

Remeasurement component recognized as other comprehensive income or loss is recorded in retained earnings.

F-127

26. Provisions

(1) Provisions as of December 31, 2015 and 2016 are as follows:

		2015				2016
		Current		Non-current		Current		Non-current
		In millions of won
Employment benefits	￦
Provisions for employment benefits			718,365		—		810,607		—
Litigation
Litigation provisions			57,737		110,228		79,359		118,878
Decommissioning cost
Nuclear plants			—		9,684,286		—		10,195,928
Spent fuel			—		1,375,185		—		1,374,225
Waste			—		1,502,140		2,566		1,476,936
PCBs			—		182,400		—		191,744
Other recovery provisions			—		862		—		507
Others
Power plant regional support program			129,655		—		152,851		—
Transmission regional support program			228,785		—		282,608		—
Provisions for tax			—		136		106		136
Provisions for financial guarantee			1,839		2,449		458		29,207
Provisions for RPS			363,178		—		417,404		—
Provisions for greenhouse gas emissions obligations			78,829		—		249,644		—
Others			788		7,068		4,385		39,590
	￦		1,579,176		12,864,754		1,999,988		13,427,151

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(2) Changes in provisions for the years ended December 31, 2015 and 2016 are as follows:

		2015
		Beginning balance		Increase in provision		Payment			Reversal			Others(*)			Ending balance
		In millions of won
Employment benefits
Provisions for employment benefits	￦		707,310		727,079		(715,850	)		(174	)		—			718,365
Litigation
Litigation provisions			200,289		111,301		(85,819	)		(58,306	)		500			167,965
Decommissioning cost
Nuclear plants			10,331,270		650,218		(622	)		(1,296,580	)		—			9,684,286
Spent fuel			1,298,749		568,190		(491,754	)		—			—			1,375,185
Waste			1,604,241		58,294		(160,699	)		—			304			1,502,140
PCBs			199,518		10,359		(27,477	)		—			—			182,400
Other recovery provisions			828		34		—			—			—			862
Others
Power plant regional support program			120,093		37,569		(37,648	)		—			9,641			129,655
Transmission regional support program			—		393,460		(164,675	)		—			—			228,785
Provisions for tax			649		—		—			(513	)		—			136
Provisions for financial guarantee			3,695		3,528		—			(2,936	)		1			4,288
Provisions for RPS			329,562		259,964		(165,259	)		(61,089	)		—			363,178
Provisions for greenhouse gas emissions obligations			—		78,829		—			—			—			78,829
Others			6,992		1,410		(590	)		44			—			7,856
	￦		14,803,196		2,900,235		(1,850,393	)		(1,419,554	)		10,446			14,443,930
		2016
		Beginning balance		Increase in provision		Payment			Reversal			Others(*)			Ending balance
		In millions of won
Employment benefits
Provisions for employment benefits	￦		718,365		1,047,342		(947,982	)		(7,108	)		(10	)		810,607
Litigation
Litigation provisions			167,965		124,931		(294,403	)		(20,736	)		220,480			198,237
Decommissioning cost
Nuclear plants			9,684,286		513,383		(1,741	)		—			—			10,195,928
Spent fuel			1,375,185		469,982		(470,942	)		—			—			1,374,225
Waste			1,502,140		49,092		(71,998	)		—			268			1,479,502
PCBs			182,400		30,675		(21,331	)		—			—			191,744
Other recovery provisions			862		—		—			(20	)		(335	)		507
Others
Power plant regional support program			129,655		50,252		(41,540	)		—			14,484			152,851
Transmission regional support program			228,785		253,664		(199,841	)		—			—			282,608
Provisions for tax			136		125		—			—			(19	)		242
Provisions for financial guarantee			4,288		29,741		—			(4,298	)		(66	)		29,665
Provisions for RPS			363,178		420,154		(309,975	)		(55,953	)		—			417,404
Provisions for greenhouse gas emissions obligations			78,829		298,618		(116,336	)		(11,467	)		—			249,644
Others			7,856		37,491		(2,699	)		(9	)		1,336			43,975
	￦		14,443,930		3,325,450		(2,478,788	)		(99,591	)		236,138			15,427,139

(*) ‘Others’ primarily include the amount recognized as addition to construction-in-progress.

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27. Government Grants

(1) Government grants as of December 31, 2015 and 2016 are as follows:

		2015			2016
		In millions of won
Land	￦		(3,147	)		(3,204	)
Buildings			(63,932	)		(61,188	)
Structures			(193,119	)		(197,641	)
Machinery			(108,935	)		(111,064	)
Vehicles			(29	)		(107	)
Equipment			(1,026	)		(732	)
Tools			(691	)		(430	)
Construction-in-progress			(139,898	)		(135,807	)
Investment properties			(13	)		(64	)
Software			(699	)		(595	)
Development expenditures			(6,835	)		(5,152	)
Intangible assets under development			(10,483	)		(11,090	)
Usage rights of donated assets and other			(32	)		(21	)
Others			(1	)		—
	￦		(528,840	)		(527,095	)

(2) Changes in government grants for the years ended December 31, 2015 and 2016 are as follows:

		2015
		Beginning balance			Receipt			Acquisition		Offset the items of depreciation expense and others		Disposal		Others			Ending balance
		In millions of won
Cash	￦		—			(52,696	)		—		—		—		52,696			—
Land			(3,103	)		—			—		—		—		(44	)		(3,147	)
Buildings			(67,700	)		—			—		5,064		—		(1,296	)		(63,932	)
Structures			(196,871	)		—			—		9,178		1,816		(7,242	)		(193,119	)
Machinery			(108,750	)		—			—		11,133		1,101		(12,419	)		(108,935	)
Vehicles			(76	)		—			—		47		1		(1	)		(29	)
Equipment			(1,002	)		—			—		469		—		(493	)		(1,026	)
Tools			(862	)		—			—		268		—		(97	)		(691	)
Construction-in-progress			(123,938	)		—			11,279		—		—		(27,239	)		(139,898	)
Investment properties			(10	)		—			—		—		—		(3	)		(13	)
Software			(488	)		—			—		177		—		(388	)		(699	)
Development expenditures			(8,183	)		—			—		2,937		—		(1,589	)		(6,835	)
Intangible assets under development			(10,692	)		—			2,093		—		—		(1,884	)		(10,483	)
Usage rights of donated assets and other			(43	)		—			—		11		—		—			(32	)
Others			(1	)		—			—		—		—		—			(1	)
	￦		(521,719	)		(52,696	)		13,372		29,284		2,918		1			(528,840	)

F-130

		2016
		Beginning balance			Receipt			Acquisition		Offset the items of depreciation expense and others		Disposal		Others			Ending balance
		In millions of won
Cash	￦		—			(32,878	)		—		—		—		32,878			—
Land			(3,147	)		—			—		—		14		(71	)		(3,204	)
Buildings			(63,932	)		—			—		5,299		731		(3,286	)		(61,188	)
Structures			(193,119	)		—			—		9,491		2,597		(16,610	)		(197,641	)
Machinery			(108,935	)		—			—		12,272		1,210		(15,611	)		(111,064	)
Vehicles			(29	)		—			—		25		—		(103	)		(107	)
Equipment			(1,026	)		—			—		452		—		(158	)		(732	)
Tools			(691	)		—			—		295		—		(34	)		(430	)
Construction-in-progress			(139,898	)		—			32,525		—		—		(28,434	)		(135,807	)
Investment properties			(13	)		—			—		1		—		(52	)		(64	)
Software			(699	)		—			—		249		—		(145	)		(595	)
Development expenditures			(6,835	)		—			—		2,771		—		(1,088	)		(5,152	)
Intangible assets under development			(10,483	)		—			991		—		—		(1,598	)		(11,090	)
Usage rights of donated assets and other			(32	)		—			—		11		—		—			(21	)
Others			(1	)		—			—		1		—		—			—
	￦		(528,840	)		(32,878	)		33,516		30,867		4,552		(34,312	)		(527,095	)

28. Deferred Revenues

Deferred revenue related to the Company’s construction contracts as of December 31, 2015 and 2016 are as follows which included in current andnon-currentnon-financial liabilities in the consolidated statements of financial position:

		2015			2016
		In millions of won
Beginning balance	￦		6,850,016			7,165,297
Increase during the current year / period			691,276			1,087,765
Recognized as revenue during the current year / period			(375,995	)		(427,297	)
Ending balance	￦		7,165,297			7,825,765

29. Non-financial Liabilities

Non-financial liabilities as of December 31, 2015 and 2016 are as follows:

		2015				2016
		Current		Non-current		Current		Non-current
		In millions of won
Advance received	￦		5,017,735		215,096		4,498,739		148,404
Unearned revenue			21,810		63,850		26,084		41,936
Deferred revenue			372,157		6,793,140		445,018		7,380,747
Withholdings			146,258		6,731		263,263		10,781
Others			762,751		13,435		1,135,106		9,737
	￦		6,320,711		7,092,252		6,368,210		7,591,605

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30. Contributed Capital

(1) Details of shares issued as of December 31, 2015 and 2016 are as follows:

	2015
	Shares authorized		Shares issued			Par value per share		Owned by government(*)		Owned by others		Total
	In millions of won except share information
Common shares		1,200,000,000		641,964,077	￦		5,000		1,640,385		1,569,435		3,209,820

(*) Korea Development Bank’s ownership of ￦1,056,176 million is included.

	2016
	Shares authorized		Shares issued			Par value per share		Owned by government(*)		Owned by others		Total
	In millions of won except share information
Common shares		1,200,000,000		641,964,077	￦		5,000		1,640,385		1,569,435		3,209,820

(*) Korea Development Bank’s ownership of ￦1,056,176 million is included.

(2) Details in number of outstanding capital stock for the years ended December 31, 2015 and 2016 are as follows.

	2015		2016
	Number of shares
Beginning balance		641,964,077		641,964,077
Ending balance		641,964,077		641,964,077

(3) Details of share premium as of December 31, 2015 and 2016 are as follows:

		2015		2016
		In millions of won
Share premium	￦		843,758		843,758

31. Retained Earnings and Dividends Paid

(1) Details of retained earnings as of December 31, 2015 and 2016 are as follows:

		2015		2016
		In millions of won
Legal reserve(*)	￦		1,604,910		1,604,910
Voluntary reserves			23,720,167		31,847,275
Retained earnings before appropriations			22,862,164		19,721,686
Retained earnings	￦		48,187,241		53,173,871

(*) The KEPCO Act requires KEPCO to appropriate a legal reserve equal to at least 20 percent of net income for each accounting period until the reserve equals 50 percent of KEPCO’s common stock. The legal reserve is not available for cash dividends; however, this reserve may be credited topaid-in capital or offset against accumulated deficit by the resolution of the shareholders.

F-132

(2) Details of voluntary reserves as of December 31, 2015 and 2016 are as follows:

		2015		2016
		In millions of won
Reserve for investment on social overhead capital	￦		5,277,449		5,277,449
Reserve for research and human development(*)			330,000		330,000
Reserve for business expansion			17,902,718		26,029,826
Reserve for equalizing dividends			210,000		210,000
	￦		23,720,167		31,847,275

(*) The reserve for research and human development is appropriated by KEPCO to use as qualified tax credits to reduce corporate tax liabilities. The reserve is available for cash dividends for a certain period as defined by the Tax Incentive Control Law of Korea.

(3) Changes in retained earnings for the years ended December 31, 2015 and 2016 are as follows:

		2015			2016
		In millions of won
Beginning balance	￦		35,303,647			48,187,241
Net profit for the period attributed to owner of the Company			13,289,127			7,048,581
Changes in equity method retained earnings			(280	)		(2,532	)
Remeasurements of defined benefit liability, net of tax			(84,271	)		(69,330	)
Dividend paid			(320,982	)		(1,990,089	)
Ending balance	￦		48,187,241			53,173,871

(4) Dividends paid for the years ended December 31, 2015 and 2016 are as follows:

	2015
In millions of won	Number of shares issued		Number of treasury stocks		Number of shares eligible for dividends			Dividends paid per share		Dividends paid
								(In won)
Common shares		641,964,077		—		641,964,077	￦		500		320,982

	2016
In millions of won	Number of shares issued		Number of treasury stocks		Number of shares eligible for dividends			Dividends paid per share		Dividends paid
								(In won)
Common shares		641,964,077		—		641,964,077	￦		3,100		1,990,089

(5) Changes in retained earnings of investments in associates and joint ventures for the years ended December 31, 2015 and 2016 are as follows:

	2015			2016
	In millions of won
Beginning balance	￦	(2,131	)		(2,411	)
Changes		(280	)		(2,532	)
Ending balance	￦	(2,411	)		(4,943	)

F-133

(6) Changes in remeasurement components for the years ended December 31, 2015 and 2016 are as follows:

		2015			2016
		In millions of won
Beginning balance	￦		(116,705	)		(202,878	)
Changes			(127,184	)		(119,316	)
Income tax effect			42,913			49,986
Transfer to reserve for business expansion			(1,902	)		49,211
Ending balance	￦		(202,878	)		(222,997	)

32. Statement of Appropriation of Retained Earnings

For the year ended December 31, 2015, the Company’s retained earnings were appropriated on March 22, 2016. For the year ended December 31, 2016, the Company’s retained earnings were appropriated on March 21, 2017. Statements of appropriation of retained earnings of KEPCO, the controlling company, for the years ended December 31, 2015 and 2016 are as follows:

			2015			2016
			In millions of won except for dividends per share
I.       Retained earnings before appropriations
Unappropriated retained earnings carried over from prior years		￦		—			—
Net income				10,165,653			4,261,986
Remeasurements of the defined benefit plan				(48,457	)		(4,328	)
				10,117,196			4,257,658
II.     Transfer from voluntary reserves				—			—
III.    Subtotal (I+II)				10,117,196			4,257,658
IV.   Appropriations of retained earnings				(10,117,196	)		(4,257,658	)
Legal reserve				—			—
Dividends (government, individual)
(Amount of dividends per share (%) :	Current year—￦1,980 (40%) Prior year—￦3,100 (62%)			(1,990,089	)		(1,271,089	)
Reserve for business expansion				(8,127,107	)		(2,986,569	)
V.     Unappropriated retained earnings to be carried over forward to subsequent year				—			—

33. Hybrid Bonds

Bond-type hybrid securities classified as equity(non-controlling interest) as of December 31, 2016 and 2015 are as follows:

Issuer	Hybrid bond		Issued date		Maturity		Yield (%)			Amount
	In millions of won
Korea Western Power Co., Ltd.		1st bond-type hybrid bond		2012.10.18		2042.10.18		5yr government bond rate+1.20	￦		100,000
Korea South-East Power Co., Ltd.		1st bond-type hybrid bond		2012.12.07		2042.12.06		4.38			170,000
Korea South-East Power Co., Ltd.		2nd bond-type hybrid bond		2012.12.07		2042.12.06		4.44			230,000
Expense of issuance											(1,340	)
									￦		498,660

F-134

Although these instruments have contractual maturity dates, the contractual agreements allow these subsidiaries to indefinitely extend the maturity dates and defer the payment of interest without modification to the other terms of the instruments. When the Company decides to not pay dividends on ordinary shares, they are not required to pay interest on the hybrid bonds.

Substantially, as these instruments have no contractual obligation to pay principal and interest, these instruments have been classified as equity(non-controlling interest) in the Company’s consolidated financial statements.

34. Other Components of Equity

(1) Other components of equity of the parent as of December 31, 2015 and 2016 are as follows:

		2015			2016
		In millions of won
Other capital surplus	￦		1,197,388			1,235,146
Accumulated other comprehensive loss			(98,713	)		(33,875	)
Other equity			13,294,973			13,294,973
	￦		14,393,648			14,496,244

(2) Changes in other capital surplus for the years ended December 31, 2015 and 2016 are as follows:

		2015								2016
		Gains on disposal of Treasury stocks		Others			Subtotal			Gains on disposal of treasury stocks		Others		Subtotal
		In millions of won
Beginning balance	￦		387,524		763,878			1,151,402			387,524		809,864		1,197,388
Disposal of subsidiary			—		58,310			58,310			—		36,008		36,008
Change in consolidation scope			—		(716	)		(716	)		—		—		—
Issuance of share capital of subsidiary			—		2,536			2,536			—		1,750		1,750
Income tax effect			—		(14,144	)		(14,144	)		—		—		—
Ending balance	￦		387,524		809,864			1,197,388			387,524		847,622		1,235,146

F-135

(3) Changes in accumulated other comprehensive income (loss) for the years ended December 31, 2015 and 2016 are as follows:

		2015
		Available-for-sale financial asset valuation  reserve			Shares in other comprehensive income of investments in associates and joint  ventures		Reserve for overseas operations translation credit			Reserve for gain (loss) on valuation of derivatives			Total
		In millions of won
Beginning balance	￦		(34,649	)		186,897		(255,641	)		(98,876	)		(202,269	)
Changes in the unrealized fair value ofavailable-for-sale financial assets, net of tax			9,744			—		—			—			9,744
Shares in other comprehensive income of associates and joint ventures, net of tax			—			89,476		—			—			89,476
Foreign currency translation of foreign operations, net of tax			—			—		1,179			—			1,179
Net change in the unrealized fair value of derivatives using cash flow hedge accounting, net of tax			—			—		—			3,157			3,157
Ending balance	￦		(24,905	)		276,373		(254,462	)		(95,719	)		(98,713	)

		2016
		Available-for-sale financial asset valuation  reserve			Shares in other comprehensive Income (loss) of investments in associates and joint  ventures			Reserve for overseas operations translation credit			Reserve for gain (loss) on valuation of derivatives			Total
		In millions of won
Beginning balance	￦		(24,905	)		276,373			(254,462	)		(95,719	)		(98,713	)
Changes in the unrealized fair value ofavailable-for-sale financial assets, net of tax			61,275			—			—			—			61,275
Shares in other comprehensive loss of associates and joint ventures, net of tax			—			(54,918	)		—			—			(54,918	)
Foreign currency translation of foreign operations, net of tax			—			—			31,406			—			31,406
Net change in the unrealized fair value of derivatives using cash flow hedge accounting, net of tax			—			—			—			27,075			27,075
Ending balance	￦		36,370			221,455			(223,056	)		(68,644	)		(33,875	)

(4) Details of other equity for the years ended December 31, 2015 and 2016 are as follows:

		2015			2016
		In millions of won
Statutory revaluation reserve	￦		13,295,098			13,295,098
Changes in other equity			(125	)		(125	)
	￦		13,294,973			13,294,973

F-136

35. Sales

Details of sales for the years ended December 31, 2014, 2015 and 2016 are as follows:

		2014				2015				2016
		Domestic		Overseas		Domestic		Overseas		Domestic		Overseas
		In millions of won
Sales of goods	￦		53,408,869		297,959		53,961,463		405,573		54,982,095		397,392
Electricity			52,625,226		—		53,229,470		—		54,304,529		—
Heat supply			258,492		—		204,987		—		181,597		—
Others			525,151		297,959		527,006		405,573		495,969		397,392
Sales of service			222,973		228,040		209,189		244,298		195,697		161,046
Sales of construction services			262,035		2,703,150		180,424		3,580,780		132,219		3,894,638
	￦		53,893,877		3,229,149		54,351,076		4,230,651		55,310,011		4,453,076

36. Selling and Administrative Expenses

(1) Selling and administrative expenses for the years ended December 31, 2014, 2015 and 2016 are as follows:

		2014		2015		2016
		In millions of won
Salaries	￦		556,808		655,432		734,930
Retirement benefit expense			12,418		61,903		72,812
Welfare and benefit expense			89,804		119,866		162,243
Insurance expense			10,619		10,636		11,513
Depreciation			69,182		102,867		169,431
Amortization of intangible assets			40,260		40,465		35,171
Bad debt expense			39,018		290		38,719
Commission			550,335		562,171		605,879
Advertising expense			27,236		30,085		34,658
Training expense			5,664		4,988		6,314
Vehicle maintenance expense			12,015		10,529		10,390
Publishing expense			3,109		3,124		3,643
Business development expense			3,053		3,338		3,477
Rent expense			34,914		44,905		40,020
Telecommunication expense			21,586		22,678		25,448
Transportation expense			1,907		753		596
Taxes and dues			42,894		55,970		46,531
Expendable supplies expense			6,009		7,272		6,834
Water, light and heating expense			9,758		9,558		9,720
Repairs and maintenance expense			40,397		74,330		75,122
Ordinary development expense			154,244		178,472		188,063
Travel expense			13,025		14,388		16,115
Clothing expense			7,577		5,751		8,273
Survey and analysis expense			526		590		666
Membership fee			798		1,040		1,132
Others			171,210		131,860		331,532
	￦		1,924,366		2,153,261		2,639,232

F-137

(2) Other selling and administrative expenses for the years ended December 31, 2014, 2015 and 2016 are as follows:

		2014		2015		2016
		In millions of won
Accommodation development expenses	￦		22,530		28,134		186,896
Miscellaneous wages			30,397		43,109		31,907
Litigation and filing expenses			9,222		10,670		12,328
Compensation for damages			46,946		9,032		60,341
Outsourcing expenses			1,377		2,865		3,530
Reward expenses			2,094		2,472		3,267
Overseas market development expenses			—		1,541		2,177
Others			58,644		34,037		31,086
	￦		171,210		131,860		331,532

37. Other Income and Expense

(1) Other income for the years ended December 31, 2014, 2015 and 2016 are as follows:

		2014		2015		2016
		In millions of won
Reversal of other provisions	￦		5,271		6,355		22,034
Reversal of allowance for doubtful accounts			241		413		5,489
Gains on government grants			—		204		111
Gains on assets contributed			2,418		9,004		12,254
Gains on liabilities exempted			858		2,588		1,959
Compensation and reparations revenue			156,019		166,355		114,530
Gains on electricity infrastructure development fund			18,888		—		—
Revenue from research contracts			9,615		5,342		13,143
Revenue related to transfer of assets from customers			351,857		375,995		427,297
Rental income			182,511		196,406		211,580
Others			26,508		45,552		31,787
	￦		754,186		808,214		840,184

(2) Details of others of other income for the years ended December 31, 2014, 2015 and 2016 are as follows:

		2014		2015		2016
		In millions of won
Refund of claim for rectification	￦		9,996		7,623		8,722
Adjustment of research project			4,003		4,090		4,148
Maintenance expenses on lease building			1,282		324		354
Training expenses			2,916		4,774		4,478
Deposit redemption			2,235		430		991
Reversal of expenses on litigation			521		219		893
Revenue on royalty fee			897		2,739		2,486
Reimbursement of insurance fee			310		11,797		—
Gains on guarantee contracts			—		4,523		2,796
Others			4,348		9,033		6,919
	￦		26,508		45,552		31,787

F-138

(3) Other expense for the years ended December 31, 2014, 2015 and 2016 are as follows:

		2014		2015		2016
		In millions of won
Compensation and indemnification expense	￦		—		16,959		—
Accretion expenses of other provisions			1,052		4,575		4,556
Depreciation expenses on investment properties			821		669		678
Depreciation expenses on idle assets			6,658		6,698		6,639
Other bad debt expense			15,981		18,473		4,585
Donations			37,889		34,134		114,094
Others			25,819		27,340		58,072
	￦		88,220		108,848		188,624

(4) Details of others of other expense for the years ended December 31, 2014, 2015 and 2016 are as follows:

		2014		2015		2016
		In millions of won
Operating expenses related to the idle assets	￦		985		779		459
Research grants			617		1,392		1,461
Supporting expenses on farming and fishing village			14,211		14,626		15,201
Operating expenses on fitness center			1,928		2,912		2,706
Expenses on adjustment of research and development grants			—		709		—
Forfeit of taxes and dues			—		1,105		4,582
Expenses on R&D supporting			1,956		146		690
Movement expense			2,262		3,191		—
Others			3,860		2,480		32,973
	￦		25,819		27,340		58,072

F-139

38. Other Gains (Losses)

(1) Composition of other gains (losses) for the years ended December 31, 2014, 2015 and 2016 are as follows:

		2014			2015			2016
		In millions of won
Other gains
Gains on disposal of property plant, and equipment	￦		85,775			8,637,508			74,035
Gains on disposal of intangible assets			4			32			—
Reversal of impairment loss on intangible assets			18			275			3
Gains on foreign currency translation			5,152			13,784			15,311
Gains on foreign currency transaction			56,368			61,007			55,377
Gains on insurance proceeds			3,046			30			—
Others			194,888			162,128			187,792
Other losses
Losses on disposal of property plant and equipment			(50,152	)		(73,073	)		(42,715	)
Losses on disposal of intangible assets			(18	)		(16	)		(158	)
Impairment loss on property, plant and equipment			(38,107	)		(30,344	)		—
Impairment loss on intangible assets			(42	)		(22	)		(3,945	)
Losses on foreign currency translation			(12,663	)		(15,097	)		(23,835	)
Losses on foreign currency transaction			(53,252	)		(75,615	)		(72,058	)
Others			(83,621	)		(69,824	)		(119,309	)
	￦		107,396			8,610,773			70,498

(2) Details of others of other gains for the years ended December 31, 2014, 2015 and 2016 are as follows:

		2014		2015		2016
		In millions of won
Gains on disposal of inventories	￦		12,127		10,758		9,494
Gains on valuation of inventories			2,756		7		2
Gains on proxy collection of TV license fee			37,433		38,529		38,991
Gains on compensation of impaired electric poles			2,319		—		3,650
Gains on compensation for infringement on contract			7,824		7,414		3,040
Gains on harbor facilities dues			5,935		5,943		2,957
Gains on technical fees			1,121		1,258		1,271
Reversal of occupation development training fees			1,850		1,878		1,756
Gains on disposal of waste			2,467		2,880		4,222
Gains on insurance			2,748		11,865		3,786
Gains on litigation			1,954		600		—
Gains on tax rebate			2,388		1,661		5,226
Gains on other commission			8,672		2,177		4,639
Gains on research tasks			28,599		1,446		10
Gains on settlement and others			—		2,803		2,188
Gains on sales of greenhouse gas emissions rights			—		52		46
Others			76,695		72,857		106,514
	￦		194,888		162,128		187,792

F-140

(3) Details of others of other losses for the years ended December 31, 2014, 2015 and 2016 are as follows:

		2014		2015		2016
		In millions of won
Losses on valuation of inventories	￦		3,231		1,318		2,683
Losses on disposal of inventories			1,996		13,469		3,092
Losses due to disaster			2,404		263		1,522
Losses on rounding adjustment of electric charge surtax			1,236		1,251		1,260
Losses on adjustments of levies			5,091		13,928		1,184
Losses onwrite-off			4,297		—		—
Forfeit of taxes and dues			6,825		190		4,582
Commission and others			139		—		—
Losses on litigation			22,999		488		2,581
Others			35,403		38,917		102,405
	￦		83,621		69,824		119,309

39. Finance Income

(1) Finance income for the years ended December 31, 2014, 2015 and 2016 are as follows:

		2014		2015		2016
		In millions of won
Interest income	￦		191,456		241,585		241,778
Dividends income			14,193		14,069		9,446
Gains on disposal of financial assets			98,065		4		1,482
Gains on valuation of derivatives			312,347		610,582		293,830
Gains on transaction of derivatives			52,618		151,851		45,549
Gains on foreign currency translation			121,177		127,372		161,905
Gains on foreign currency transaction			95,418		37,377		37,553
Other finance income			16		148		—
	￦		885,290		1,182,988		791,543

(2) Interest income included in finance income for the years ended December 31, 2014, 2015 and 2016 are as follows:

		2014		2015		2016
		In millions of won
Cash and cash equivalents	￦		56,384		54,687		61,380
Available-for-sale financial assets			382		29		—
Held-to-maturity investments			89		99		97
Loans and receivables			29,507		28,586		25,106
Short-term financial instrument			5,199		46,921		45,763
Long-term financial instrument			215		10,492		7,195
Other financial assets			—		—		—
Trade and other receivables			99,680		100,771		102,237
	￦		191,456		241,585		241,778

F-141

40. Finance Expenses

(1) Finance expenses for the years ended December 31, 2014, 2015 and 2016 are as follows:

		2014		2015		2016
		In millions of won
Interest expense	￦		2,351,624		2,015,684		1,752,868
Losses on sale of financial assets			2,700		3,008		9
Impairment ofavailable-for-sale financial assets			79,618		84,370		86,703
Losses on valuation of derivatives			102,091		17,051		5,762
Losses on transaction of derivatives			119,635		37,262		101,987
Losses on foreign currency translation			465,326		743,283		406,849
Losses on foreign currency transaction			18,827		113,723		57,889
Losses on repayment of financial liabilities			199		33		23,000
Other			18		1,043		2,020
	￦		3,140,038		3,015,457		2,437,087

(2) Interest expense included in finance expenses for the years ended December 31, 2014, 2015 and 2016 are as follows:

		2014			2015			2016
		In millions of won
Trade and other payables	￦		98,407			84,527			68,375
Short-term borrowings			27,038			14,627			6,969
Long-term borrowings			167,781			103,503			91,584
Debt securities			2,306,330			2,177,855			1,922,900
Other financial liabilities			588,535			538,680			482,428
			3,188,091			2,919,192			2,572,256
Less: Capitalized borrowing costs			(836,467	)		(903,508	)		(819,388	)
	￦		2,351,624			2,015,684			1,752,868

Capitalization rates for the years ended December 31, 2014, 2015 and 2016 are 3.28% ~ 4.35%, 2.36% ~ 4.25% and 2.29% ~ 4.16%, respectively.

41. Income Taxes

(1) Income tax expense for the years ended December 31, 2014, 2015 and 2016 are as follows:

		2014			2015			2016
		In millions of won
Current income tax expense
Payment of income tax	￦		897,129			2,682,779			2,689,640
Adjustment in respect of prior years due to change in estimate			(29,823	)		(23,248	)		231,113
Current income tax directly recognized in equity			9,137			37,768			30,059
			876,443			2,697,299			2,950,812
Deferred income tax expense
Generation and realization of temporary differences			248,796			48,878			509,762
Changes of unrecognized tax losses, tax credit and temporary differences for prior periods			(26,067	)		71,999			(86,845	)
Changes in deferred tax on tax losses carryforwards			345,887			2,374,237			—
Tax credit carryforwards			(14,720	)		47,000			(8,588	)
			553,896			2,542,114			414,329
Income tax expense	￦		1,430,339			5,239,413			3,365,141

F-142

(2) Reconciliation between actual income tax expense and amount computed by applying the statutory tax rate of 24.2% to income before income taxes for the years ended December 31, 2014, 2015 and 2016 are as follows:

		2014			2015			2016
		In millions of won
Income before income tax	￦		4,229,306			18,655,786			10,513,468
Income tax expense computed at applicable tax rate of 24.2%			1,023,492			4,514,700			2,544,259
Adjustments
Effect of applying gradual tax rate			(1,503	)		(4,147	)		(5,082	)
Effect ofnon-taxable revenue			(50,728	)		(8,047	)		(29,554	)
Effect ofnon-deductible expenses			43,152			17,734			22,258
Effects of tax credits and deduction			(75,804	)		(103,435	)		(194,731	)
Recognition (reversal) of unrecognized deferred tax asset, net			(26,067	)		71,999			(86,845	)
Deferred income tax related to investments in subsidiaries and associates			516,557			784,793			862,956
Others, net			31,063			(10,936	)		20,767
			436,670			747,961			589,769
Adjustment in respect of prior years due to change in estimate			(29,823	)		(23,248	)		231,113
Income tax expense	￦		1,430,339			5,239,413			3,365,141
Effective tax rate			34	%		28	%		32	%

(3) Income tax directly adjusted to shareholders’ equity (except for accumulated other comprehensive income (loss)) for the years ended December 31, 2014, 2015 and 2016 are as follows:

		2014			2015			2016
		In millions of won
Dividends of hybrid securities	￦		5,256			5,253			5,253
Gain on disposal of investments in subsidiaries			(75,958	)		(14,144	)		(7,006	)
Gain on disposal of treasury stocks			(26,976	)		—			—
	￦		(97,678)			(8,891	)		(1,753	)

(4) Income tax recognized as other comprehensive income (loss) for the years ended December 31, 2014, 2015 and 2016 are as follows:

		2014			2015			2016
		In millions of won
Income tax recognized as other comprehensive income (loss)
Gain (loss) on valuation ofavailable-for-sale financial assets	￦		26,149			(6,315	)		(8,143	)
Net change in the unrealized fair value of derivatives using cash flow hedge accounting, net of tax			51,504			7,253			(18,335	)
Remeasurements of defined benefit obligations			60,270			42,913			49,986
Investments in associates			(16,813	)		13,648			7,731
Others			(14,295	)		(10,840	)		573
	￦		106,815			46,659			31,812

F-143

(5) Changes in deferred income tax assets (liabilities) recognized in the statements of financial position for the years ended December 31, 2015 and 2016 are as follows:

		2015
		Beginning balance			Amounts recognized in profit or loss			Amount recognized in other comprehensive income (loss)			Amounts recognized directly in equity			Ending balance
		In millions of won
Deferred income tax on temporary differences
Employee benefits	￦		352,934			11,495			42,913			—			407,342
Cash flow hedge			51,354			(87,620	)		7,253			—			(29,013	)
Investments in associates or subsidiaries			(5,769,627	)		(669,035	)		2,808			(14,144	)		(6,449,998	)
Property, plant and equipment			(5,979,863	)		484,077			—			—			(5,495,786	)
Finance lease			(197,097	)		(75,333	)		—			—			(272,430	)
Intangible assets			12,309			(2,889	)		—			—			9,420
Financial assets at fair value through profit or loss			2,840			(2,844	)		—			—			(4	)
Available-for-sale financial assets			(41,836	)		(1,048	)		(6,315	)		—			(49,199	)
Deferred revenue			230,644			(15,283	)		—			—			215,361
Provisions			3,459,775			(87,352	)		—			—			3,372,423
Doubtful receivables			1,356			49			—			—			1,405
Other finance liabilities			23,237			(2,192	)		—			5,253			26,298
Gains or losses on foreign exchange translation			53,794			74,920			—			—			128,714
Allowance for doubtful accounts			15,452			3,524			—			—			18,976
Accrued income			(3,245	)		(7,986	)		—			—			(11,231	)
Special deduction for property, plant and equipment			(194,674	)		327			—			—			(194,347	)
Impairment ofnon-current assets			86,720			(86,720	)		—			—			—
Reserve for research and human development			(35,499	)		14,811			—			—			(20,688	)
Others			460,019			116,566			—			—			576,585
			(7,471,407	)		(332,533	)		46,659			(8,891	)		(7,766,172	)
Deferred income tax on unused tax losses and tax credit
Tax losses			2,176,175			(2,176,178	)		—			—			(3	)
Tax credit			98,286			(71,171	)		—			—			27,115
			2,274,461			(2,247,349	)		—			—			27,112
	￦		(5,196,946	)		(2,579,882	)		46,659			(8,891	)		(7,739,060	)

F-144

		2016
		Beginning balance			Amounts recognized in profit or loss			Amount recognized in other comprehensive income (loss)			Amounts recognized directly in equity			Ending balance
		In millions of won
Deferred income tax on temporary differences
Employee benefits	￦		407,342			36,003			49,986			—			493,331
Cash flow hedge			(29,013	)		(6,235	)		(18,335	)		—			(53,583	)
Investments in associates or subsidiaries			(6,449,998	)		(717,072	)		7,731			(7,006	)		(7,166,345	)
Property, plant and equipment			(5,495,786	)		(31,532	)		—			—			(5,527,318	)
Finance lease			(272,430	)		(73,001	)		—			—			(345,431	)
Intangible assets			9,420			(433	)		—			—			8,987
Financial assets at fair value through profit or loss			(4	)		(58	)		—			—			(62	)
Available-for-sale financial assets			(49,199	)		(11,005	)		(8,143	)		—			(68,347	)
Deferred revenue			215,361			(1,502	)		—			—			213,859
Provisions			3,372,423			210,948			—			—			3,583,371
Doubtful receivables			1,405			1,291			—			—			2,696
Other finance liabilities			26,298			(1,302	)		—			5,253			30,249
Gains or losses on foreign exchange translation			128,714			10,224			—			—			138,938
Allowance for doubtful accounts			18,976			(1,724	)		—			—			17,252
Accrued income			(11,231	)		5,864			—			—			(5,367	)
Special deduction for property, plant and equipment			(194,347	)		38			—			—			(194,309	)
Reserve for research and human development			(20,688	)		7,805			—			—			(12,883	)
Others			576,585			118,712			573			—			695,870
			(7,766,172	)		(452,979	)		31,812			(1,753	)		(8,189,092	)
Deferred income tax on unused tax losses and tax credit
Tax losses			(3	)		3			—			—			—
Tax credit			27,115			8,588			—			—			35,703
			27,112			8,591			—			—			35,703
	￦		(7,739,060	)		(444,388	)		31,812			(1,753	)		(8,153,389	)

(6) Deferred income tax assets (liabilities) recognized in the statements of financial position as of December 31, 2015 and 2016 are as follows:

		2015			2016
		In millions of won
Deferred income tax assets	￦		623,623			795,131
Deferred income tax liabilities			(8,362,683	)		(8,948,520	)
	￦		(7,739,060	)		(8,153,389	)

F-145

(7) Details of deductible temporary differences, tax losses and unused tax credits not recognized in the deferred income tax assets as of December 31, 2015 and 2016 are as follows:

		2015		2016
		In millions of won
Deductible temporary differences	￦		441,704		426,718

42. AssetsHeld-for-Sale

Assetsheld-for-sale as of December 31, 2015 and 2016 are as follows:

		2015		2016
		In millions of won
Land(*1)	￦		2,907		2,907
Building(*1)			20,366		20,366
Investments in associates(*2, 3)			56,374		42,569
	￦		79,647		65,842

(*1) The board of directors of KEPCO Engineering & Construction Company, Inc., a subsidiary of the Company, determined to dispose the office building in Yongin as part of the government’s plan to relocatestate-run companies for balanced national development and moved the head office to Kimchun, Kyungsangbukdo, in 2015. As the Company believes the book value of Yongin office will be recovered by a disposal transaction rather than continuous operation, it reclassified buildings, land and structures as assetsheld-for-sale.

(*2) Korea Western Power Co., Ltd., a subsidiary of the Company, plans to dispose certain portion of its investment in Dongducheon Dream Power Co., Ltd. and reclassified the relevant book value tonon-current assetsheld-for-sale.

(*3) Korea Hydro & Nuclear Power Co., Ltd., a subsidiary of the Company, reclassified its investments in Yeongwol Energy Station Co., Ltd. to assetsheld-for-sale according to the shareholders’ agreement. The reclassified amount is determined as using the lower amount of either the book value or net fair value.

F-146

43. Expenses Classified by Nature

Expenses classified by nature for the years ended December 31, 2014, 2015 and 2016 are as follows:

		2014
		Selling and administrative expenses		Cost of sales		Total
		In millions of won
Raw materials used	￦		—		20,150,934		20,150,934
Salaries			556,808		2,633,641		3,190,449
Retirement benefit expense			12,418		147,843		160,261
Welfare and benefit expense			89,804		313,483		403,287
Insurance expense			10,619		65,322		75,941
Depreciation			69,182		7,720,386		7,789,568
Amortization of intangible assets			40,260		36,153		76,413
Bad debt expense			39,018		—		39,018
Commission			550,335		355,263		905,598
Advertising expense			27,236		7,414		34,650
Training expense			5,664		9,387		15,051
Vehicle maintenance expense			12,015		9,297		21,312
Publishing expense			3,109		3,917		7,026
Business development expense			3,053		3,960		7,013
Rent expense			34,914		98,321		133,235
Telecommunication expense			21,586		70,140		91,726
Transportation expense			1,907		3,638		5,545
Taxes and dues			42,894		250,722		293,616
Expendable supplies expense			6,009		26,279		32,288
Water, light and heating expense			9,758		26,910		36,668
Repairs and maintenance expense			40,397		1,388,975		1,429,372
Ordinary development expense			154,244		391,491		545,735
Travel expense			13,025		46,792		59,817
Clothing expense			7,577		5,039		12,616
Survey and analysis expense			526		2,391		2,917
Membership fee			798		6,047		6,845
Power purchase			—		12,601,686		12,601,686
Others			171,210		3,387,521		3,558,731
	￦		1,924,366		49,762,952		51,687,318

F-147

		2015
		Selling and administrative expenses		Cost of sales		Total
		In millions of won
Raw materials used	￦		—		14,626,933		14,626,933
Salaries			655,432		2,962,476		3,617,908
Retirement benefit expense			61,903		320,700		382,603
Welfare and benefit expense			119,866		426,186		546,052
Insurance expense			10,636		83,910		94,546
Depreciation			102,867		8,158,884		8,261,751
Amortization of intangible assets			40,465		31,801		72,266
Bad debt expense			290		—		290
Commission			562,171		353,703		915,874
Advertising expense			30,085		8,498		38,583
Training expense			4,988		11,186		16,174
Vehicle maintenance expense			10,529		8,323		18,852
Publishing expense			3,124		3,981		7,105
Business development expense			3,338		4,312		7,650
Rent expense			44,905		142,054		186,959
Telecommunication expense			22,678		73,180		95,858
Transportation expense			753		5,336		6,089
Taxes and dues			55,970		397,161		453,131
Expendable supplies expense			7,272		29,874		37,146
Water, light and heating expense			9,558		26,870		36,428
Repairs and maintenance expense			74,330		1,771,760		1,846,090
Ordinary development expense			178,472		432,748		611,220
Travel expense			14,388		52,910		67,298
Clothing expense			5,751		4,135		9,886
Survey and analysis expense			590		3,071		3,661
Membership fee			1,040		6,401		7,441
Power purchase			—		11,428,027		11,428,027
Others			131,860		4,083,309		4,215,169
	￦		2,153,261		45,457,729		47,610,990

F-148

		2016
		Selling and administrative expenses		Cost of sales		Total
		In millions of won
Raw materials used	￦		—		13,470,586		13,470,586
Salaries			734,930		3,425,712		4,160,642
Retirement benefit expense			72,812		374,826		447,638
Welfare and benefit expense			162,243		507,691		669,934
Insurance expense			11,513		79,987		91,500
Depreciation			169,431		8,704,525		8,873,956
Amortization of intangible assets			35,171		44,544		79,715
Bad debt expense			38,719		—		38,719
Commission			605,879		423,179		1,029,058
Advertising expense			34,658		9,693		44,351
Training expense			6,314		13,347		19,661
Vehicle maintenance expense			10,390		7,016		17,406
Publishing expense			3,643		4,615		8,258
Business development expense			3,477		4,836		8,313
Rent expense			40,020		133,670		173,690
Telecommunication expense			25,448		75,925		101,373
Transportation expense			596		5,153		5,749
Taxes and dues			46,531		464,962		511,493
Expendable supplies expense			6,834		34,668		41,502
Water, light and heating expense			9,720		25,820		35,540
Repairs and maintenance expense			75,122		1,896,656		1,971,778
Ordinary development expense			188,063		517,441		705,504
Travel expense			16,115		63,611		79,726
Clothing expense			8,273		5,363		13,636
Survey and analysis expense			666		3,209		3,875
Membership fee			1,132		8,714		9,846
Power purchase			—		10,755,739		10,755,739
Others			331,532		4,488,065		4,819,597
	￦		2,639,232		45,549,553		48,188,785

44. Earnings Per Share

(1) Basic earnings per share for the years ended December 31, 2014, 2015 and 2016 are as follows:

Type		2014		2015		2016
		In won
Basic earnings per share	￦		4,290		20,701		10,980

(2) Diluted earnings per share for the years ended December 31, 2014, 2015 and 2016 are as follows:

Type		2014		2015		2016
		In won
Diluted earnings per share	￦		4,290		20,701		10,980

F-149

(3) Basic earnings per share

Net profit for the period and weighted average number of common shares used in the calculation of basic earnings per share for the years ended December 31, 2014, 2015 and 2016 are as follows:

Type		2014		2015		2016
		In millions of won except number of shares
Controlling interest in net profit	￦		2,686,873		13,289,127		7,048,581
Profit used in the calculation of total basic earnings per share			2,686,873		13,289,127		7,048,581
Weighted average number of common shares			626,353,314		641,964,077		641,964,077

(4) Diluted earnings per share

Diluted earnings per share is calculated by applying adjusted weighted average number of common shares under the assumption that all dilutive potential common shares are converted to common shares.

Earnings used in the calculation of total diluted earnings per share for the years ended December 31, 2014, 2015 and 2016 are as follows:

Type		2014		2015		2016
		In millions of won
Profit used in the calculation of total diluted earnings per share	￦		2,686,873		13,289,127		7,048,581

Weighted average common shares used in calculating diluted earnings per share are adjusted from weighted average common shares used in calculating basic earnings per share. Detailed information of the adjustment for the years ended December 31, 2014, 2015 and 2016 are as follows:

Type	2014		2015		2016
	In number of shares
Weighted average number of common shares		626,353,314		641,964,077		641,964,077
Diluted weighted average number of shares		626,353,314		641,964,077		641,964,077

(5) There are no potential dilutive instruments and diluted earnings per share are same as basic earnings per share for the years ended December 31, 2014, 2015 and 2016.

45. Risk Management

(1) Capital risk management

The Company manages its capital to ensure that entities in the Company will be able to continue while maximizing the return to shareholder through the optimization of the debt and equity balance. The capital structure of the Company consists of net debt (offset by cash and cash equivalents) and equity. The Company’s overall capital risk management strategy remains unchanged from that of the prior year.

Details of the Company’s capital management accounts as of December 31, 2015 and 2016 are as follows:

		2015			2016
		In millions of won
Total borrowings and debt securities	￦		58,753,499			53,639,205
Cash and cash equivalents			3,783,065			3,051,353
Net borrowings and debt securities			54,970,434			50,587,852
Total shareholder’s equity			67,942,475			73,050,545
Debt to equity ratio			80.91	%		69.25	%

F-150

(2) Financial risk management

The Company is exposed to various risks related to its financial instruments, such as, market risk (currency risk, interest rate risk, price risk), credit risk. The Company monitors and manages the financial risks relating to the operations of the Company through internal risk reports which analyze exposures by degree and magnitude of risks. The Company uses derivative financial instruments to hedge certain risk exposures. The Company’s overall financial risk management strategy remains unchanged from that of the prior year.

(i) Credit risk

Credit risk is the risk of finance loss to the Company if a customer or counterparty to a financial instrument fails to meet its contractual obligations, and arises primarily from the sales activities, securities and derivatives. In addition, credit risk exposure may exist within financial guarantees and unused line of credits. As these financial institutions the Company makes transactions with are reputable financial institutions, the credit risk from them are considered limited. The Company decides credit transaction limits based on evaluation of client’s credit, through information obtained from the credit bureau and disclosed financial position at committing contracts.

① Credit risk management

Electricity sales, the main operations of the Company are the necessity for daily life and industrial activities of Korean nationals, and have importance as one of the national key industries. The Company dominates the domestic market supplying electricity to customers. The Company is not exposed to credit risk as customers of the Company are from various industries and areas. The Company uses publicly available information and its own internal data related to trade receivables, to rate its major customers and to measure the credit risk that a counter party will default on a contractual obligation. For the incurred but not recognized loss, it is measured considering overdue period.

② Impairment and allowance account

In accordance with the Company policies, individual material financial assets are assessed on a regular basis, trade receivables that are assessed not to be impaired individually are, in addition, assessed for impairment on a collective basis. Value of the acquired collateral (including the confirmation of feasibility) and estimated collectable amounts are included in this assessment.

Allowance for bad debts assessed on a collective basis are recognized for (i) the Company of assets which individually are not material and (ii) incurred but not recognized losses that are assessed using statistical methods, judgment and past experience.

Book values of the financial assets represent the maximum exposed amounts of the credit risk. Details of the Company’s level of maximum exposure to credit risk as of December 31, 2015 and 2016 are as follows:

		2015		2016
		In millions of won
Cash and cash equivalents	￦		3,783,065		3,051,353
Derivative assets (trading)			255,008		367,477
Available-for-sale financial assets			584,479		1,014,732
Held-to-maturity investments			3,623		3,244
Loans and receivables			735,057		834,207
Long-term/short-term financial instruments			5,890,866		2,695,926
Derivative assets (using hedge accounting)			362,142		413,897
Trade and other receivables			9,271,967		9,692,391
Financial guarantee contracts(*)			271,010		1,396,152

(*) Maximum exposure associated with the financial guarantee contracts is the maximum amounts of the obligation.

F-151

As of the reporting date, there are no financial assets andnon-financial assets that were acquired through the exercise of the right of collateralized assets and reinforcement of credit arrangement.

(ii) Market risk

Market risk is the risk that the Company’s fair values of the financial instruments or future cash flows are affected by the changes in the market. Market risk consists of interest rate risk, currency risk and other price risk.

(iii) Sensitivity analysis

Significant assets and liabilities with uncertainties in underlying assumptions

① Defined benefit obligation

A sensitivity analysis of defined benefit obligation assuming a 1% increase and decrease movements in the actuarial valuation assumptions as of December 31, 2015 and 2016 are as follows:

			2015						2016
Type	Accounts		1% Increase			1% Decrease			1% Increase			1% Decrease
	In millions of won
Future salary increases	Increase (decrease) in defined benefit obligation	￦		293,205			(271,758	)		344,874			(304,685	)
Discount rate	Increase (decrease) in defined benefit obligation			(267,648	)		315,870			(305,031	)		371,689

Changes of employee benefits assuming a 1% increase and decrease movements in discount rate on plan asset for the years ended December 31, 2015 and 2016 are ￦7,265 million and ￦9,096 million, respectively.

② Provisions

Changes in provisions due to movements in underlying assumptions as of December 31, 2015 and 2016 are as follows:

Type	Accounts	2015			2016
PCBs	Inflation rate		2.65	%		1.29	%
	Discount rate		3.21	%		2.77	%
Nuclear plants	Inflation rate		1.40	%		1.40	%
	Discount rate		3.55	%		3.55	%
Spent fuel	Inflation rate		2.93	%		2.93	%
	Discount rate		4.49	%		4.49	%

F-152

A sensitivity analysis of provisions assuming a 0.1% increase and decrease movements in the underlying assumptions as of December 31, 2015 and 2016 are as follows:

			2015						2016
Type	Accounts		0.1% Increase			0.1% Decrease			0.1% Increase			0.1% Decrease
	In millions of won
Discount rate	PCBs	￦		(875	)		881			(817	)		822
	Nuclear plants			(201,318	)		206,720			(209,277	)		215,139
	Spent fuel			(52,390	)		54,425			(52,353	)		54,387
Inflation rate	PCBs			885			(881	)		834			(830	)
	Nuclear plants			220,720			(215,086	)		240,115			(233,553	)
	Spent fuel			55,212			(53,219	)		55,173			(53,182	)

Management judgment effected by uncertainties in underlying assumptions

① Foreign currency risk

The Company undertakes transactions denominated in foreign currencies; consequently, exposures to exchange rate fluctuations arise. The carrying amounts of the Company’s foreign currency denominated monetary assets and monetary liabilities as of December 31, 2015 and 2016 are as follows:

	Assets				Liabilities
Type	2015		2016		2015		2016
	In thousands of foreign currencies
AED		1,481		7,479		1,705		1,534
AUD		158		187		595,284		632,613
BDT		43,332		49,110		889		833
BWP		301		4,296		—		3,222
CAD		—		—		858		—
CHF		—		—		400,029		400,308
CNY		—		—		26,140		—
EUR		6,141		17,585		33,552		14,111
GBP		—		3		99		110
IDR		—		52,568		—		—
INR		972,175		1,059,092		206,159		161,631
JOD		2,972		1,746		—		5
JPY		1,425,163		520,746		20,325,211		20,442,504
KZT		47,177		12,157		—		—
MGA		2,768,360		3,408,579		151,729		150,430
MXN		7,704		—		—		—
PHP		489,309		415,818		77,337		136,700
PKR		211,212		274,090		12,928		5,051
SAR		1,083		1,149		—		—
TWD		—		—		30		—
USD		1,260,094		1,319,524		9,331,854		9,445,567
UYU		—		1,307		—		586
ZAR		238		386		—		75

A sensitivity analysis on the Company’s income for the period assuming a 10% increase and decrease in currency exchange rates as of December 31, 2015 and 2016 are as follows:

		2015					2016
Type		10% Increase			10% Decrease		10% Increase			10% Decrease
		In millions of won
Increase (decrease) of income before income tax	￦		(1,063,285	)		1,063,285		(1,101,372	)		1,101,372
Increase (decrease) of shareholder’s equity(*)			(1,063,285	)		1,063,285		(1,101,372	)		1,101,372

(*) The effect on the shareholders’ equity excluding the impact of income taxes.

F-153

The sensitivity analysis above is conducted for monetary assets and liabilities denominated in foreign currencies other than functional currency, without consideration of hedge effect of related derivatives, as of December 31, 2015 and 2016.

To manage its foreign currency risk related to foreign currency denominated receivables and payables, the Company has a policy to enter into currency forward agreements. In addition, to manage its foreign currency risk related to foreign currency denominated expected sales transactions and purchase transactions, the Company enters into cross-currency swap agreements.

② Interest rate risk

The Company is exposed to interest rate risk due to its borrowing with floating interest rates. A 1% increase or decrease is used when reporting interest rate risk internally to key management personnel and represents management’s assessment of the reasonably possible change in interest rates.

The Company’s borrowings and debt securities with floating interest rates as of December 31, 2015 and 2016 are as follows:

Type		2015		2016
		In millions of won
Short-term borrowings	￦		41,608		289,322
Long-term borrowings			1,977,745		1,459,969
Debt securities			2,082,000		1,518,500
	￦		4,101,353		3,267,791

A sensitivity analysis on the Company’s long-term borrowings and debt securities assuming a 1% increase and decrease in interest rates, without consideration of hedge effect of related derivatives for the years ended December 31, 2015 and 2016 are as follows:

		2015					2016
Type		1% Increase			1% Decrease		1% Increase			1% Decrease
		In millions of won
Increase (decrease) of profit before income tax	￦		(41,014	)		41,014		(32,678	)		32,678
Increase (decrease) of shareholder’s equity(*)			(41,014	)		41,014		(32,678	)		32,678

(*) The effect on the shareholders’ equity excluding the impact of income taxes.

To manage its interest rate risks, the Company enters into certain interest swap agreements or maintains an appropriate mix of fixed and floating rate borrowings.

③ Electricity rates risk

The Company is exposed to electricity rates risk due to the rate regulation of the government which considers the effect of electricity rate on the national economy.

A sensitivity analysis on the Company’s income for the period assuming a 1% increase and decrease in price of electricity for the years ended December 31, 2015 and 2016 are as follows:

		2015					2016
Type		1% Increase		1% Decrease			1% Increase		1% Decrease
		In millions of won
Increase (decrease) of profit before income tax	￦		532,295		(532,295	)		543,045		(543,045	)
Increase (decrease) of shareholder’s equity(*)			532,295		(532,295	)		543,045		(543,045	)

(*) The effect on the shareholders’ equity excluding the impact of income taxes.

F-154

(iv) Liquidity risk

The Company has established an appropriate liquidity risk management framework for the management of the Company’s short, medium and long-term funding and liquidity management requirements. The Company manages liquidity risk by continuously monitoring forecasted and actual cash flows, and by matching the maturity profiles of financial assets and liabilities.

In addition, the Company has established credit lines on its trade financing and bank overdrafts, and through payment guarantees it has received, it maintains an adequate credit (borrowing) line. In addition, the Company has the ability to utilize excess cash or long-term borrowings for major construction investments.

The following table shows the details of maturities ofnon-derivative financial liabilities as of December 31, 2015 and 2016. This table, based on the undiscounted cash flows of thenon-derivative financial liabilities, has been completed based on the respective liabilities’ earliest maturity date.

		2015
Type		Less than 1 year		1~2 Years		2~5 Years		More than 5 years		Total
		In millions of won
Borrowings and debt securities	￦		9,862,441		11,252,946		23,642,523		28,566,566		73,324,476
Finance lease liabilities			182,072		175,512		349,953		206,323		913,860
Trade and other payables			4,618,812		314,361		617,120		2,244,445		7,794,738
Financial guarantee contracts(*)			168,885		62,116		40,009		—		271,010
	￦		14,832,210		11,804,935		24,649,605		31,017,334		82,304,084

		2016
Type		Less than 1 year		1~2 Years		2~5 Years		More than 5 years		Total
		In millions of won
Borrowings and debt securities	￦		10,613,185		9,786,209		19,353,498		24,461,835		64,214,727
Finance lease liabilities			175,512		174,534		229,495		152,247		731,788
Trade and other payables			5,464,234		307,222		660,426		2,170,525		8,602,407
Financial guarantee contracts(*)			249,200		40,617		865,842		240,493		1,396,152
	￦		16,502,131		10,308,582		21,109,261		27,025,100		74,945,074

(*) This represents the total guarantee amounts associated with the financial guarantee contracts. Financial guarantee liabilities which are recognized as of December 31, 2015 and 2016 are ￦4,288 million and ￦29,665 million, respectively.

The expected maturities fornon-derivative financial assets as of December 31, 2015 and 2016 in detail are as follows:

		2015
Type		Less than 1 year		1~5 Years		More than 5 years		Other(*)		Total
		In millions of won
Cash and cash equivalents	￦		3,783,065		—		—		—		3,783,065
Available-for-sale financial assets			—		—		—		584,479		584,479
Held-to-maturity investments			381		3,242		—		—		3,623
Loans and receivables			106,013		268,820		397,976		11,330		784,139
Long-term/short-term financial instruments			5,132,829		5,000		752,703		334		5,890,866
Trade and other receivables			7,476,745		765,979		958,968		79,202		9,280,894
	￦		16,499,033		1,043,041		2,109,647		675,345		20,327,066

F-155

		2016
Type		Less than 1 year		1~5 Years		More than 5 years		Other(*)		Total
		In millions of won
Cash and cash equivalents	￦		3,051,353		—		—		—		3,051,353
Available-for-sale financial assets			—		—		—		1,014,732		1,014,732
Held-to-maturity investments			114		3,126		4		—		3,244
Loans and receivables			198,133		233,564		439,666		5,591		876,954
Long-term/short-term financial instruments			2,281,460		200,001		214,122		343		2,695,926
Trade and other receivables			7,790,953		915,679		919,901		74,199		9,700,732
	￦		13,322,013		1,352,370		1,573,693		1,094,865		17,342,941

(*) The maturities cannot be presently determined.

Derivative liabilities classified by maturity periods which from reporting date to maturity date of contract as of December 31, 2015 and 2016 are as follows:

		2015
Type		Less than 1 year			1~2 Years			2~5 Years			More than 5 years			Total
		In millions of won
Gross settlement
—Trading	￦		(9,552	)		(4,627	)		(47,971	)		—			(62,150	)
—Hedging			1,260			2,032			(44,233	)		(62,534	)		(103,475	)
	￦		(8,292	)		(2,595	)		(92,204	)		(62,534	)		(165,625	)

		2016
Type		Less than 1 year			1~2 Years			2~5 Years			More than 5 years			Total
		In millions of won
Gross settlement
—Trading	￦		(3,081	)		(24,044	)		—			(2,799	)		(29,924	)
—Hedging			(2,645	)		(2,645	)		(56,484	)		(56,575	)		(118,349	)
	￦		(5,726	)		(26,689	)		(56,484	)		(59,374	)		(148,273	)

(3) Fair value risk

The fair value of the Company’s actively-traded financial instruments (i.e. short-term financial assets held for trading,available-for-sale financial assets, etc.) is based on the traded market-price as of the reporting period end. The fair value of the Company’s financial assets is the amount which the asset could be exchanged for or the amount a liability could be settled for.

The fair values of financial instruments where no active market exists or where quoted prices are not otherwise available are determined by using valuation techniques. Valuation techniques include using recent arm’s length market transactions between knowledgeable, willing parties, if available, reference to the current fair value of another instrument that is substantially the same, discounted cash flow analysis and option pricing models. If there is a valuation technique commonly used by market participants to price the instrument and that technique has been demonstrated to provide reliable estimates of prices obtained in actual market transactions, the Company uses that technique.

F-156

For trade receivables and payables, the Company considers the carrying value net of impairment as fair value. While for disclosure purposes, the fair value of financial liabilities is estimated by discounting a financial instruments with similar contractual cash flows based on the effective interest method.

(i) Fair value and book value of financial assets and liabilities as of December 31, 2015 and 2016 are as follows:

		2015				2016
Type		Book value		Fair value		Book value		Fair value
		In millions of won
Assets recognized at fair value
Available-for-sale financial assets(*1)	￦		584,479		584,479		1,014,732		1,014,732
Derivative assets (trading)			255,008		255,008		367,477		367,477
Derivative assets (using hedge accounting)			362,142		362,142		413,897		413,897
Long-term financial instruments			758,037		758,037		414,466		414,466
Short-term financial instruments			5,132,829		5,132,829		2,281,460		2,281,460
			7,092,495		7,092,495		4,492,032		4,492,032
Assets carried at amortized cost
Held-to-maturity investments			3,623		3,623		3,244		3,244
Loans and receivables			735,057		735,057		834,207		834,207
Trade and other receivables			9,271,967		9,271,967		9,692,391		9,692,391
Cash and cash equivalents			3,783,065		3,783,065		3,051,353		3,051,353
			13,793,712		13,793,712		13,581,195		13,581,195
Liabilities recognized at fair value
Derivative liabilities (trading)			49,011		49,011		21,529		21,529
Derivative liabilities (using hedge accounting)			117,499		117,499		117,157		117,157
			166,510		166,510		138,686		138,686
Liabilities carried at amortized cost
Secured borrowings			641,363		641,363		744,565		744,565
Unsecured bond			55,677,213		59,619,941		50,749,793		54,455,659
Finance lease liabilities			659,394		659,394		541,179		541,179
Unsecured borrowings			2,407,690		2,427,847		2,089,885		2,099,574
Trade and other payables(*2)			7,794,738		7,794,738		8,602,407		8,602,407
Bank overdraft			27,233		27,233		54,962		54,962
	￦		67,207,631		71,170,516		62,782,791		66,498,346

(*1) Book values of equity securities held by the Company that were measured at cost as of December 31, 2015 and 2016 are ￦207,508 million and ￦138,557 million, respectively, as a quoted market price does not exist in an active market and its fair value cannot be measured reliably.

(*2) Excludes finance lease liabilities.

(ii) Interest rates used for determining fair value

The interest rates used to discount estimated cash flows, when applicable, are based on the government yield curve at the reporting date plus an adequate credit spread.

F-157

The discount rate used for calculating fair value as of December 31, 2015 and 2016 are as follows:

Type	2015		2016
Derivatives		0.28% ~ 4.16%		0.02% ~ 4.16%
Borrowings and debt securities		0.15% ~ 5.80%		0.02% ~ 4.38%
Finance lease		9.00% ~ 10.83%		9.00% ~ 10.83%

(iii) Fair value hierarchy

The following table provides an analysis of financial instruments that are measured subsequent to initial recognition at fair value, classified as Level 1, 2 or 3, based on the degree to which the fair value is observable.

Level 1: Unadjusted quoted prices in active markets for identical assets or liabilities;

Level 2: Inputs other than quoted prices that are observable for the asset or liability either directly or indirectly; and

Level 3: Inputs that are not based on observable market data.

Fair values of financial instruments by hierarchy level as of December 31, 2015 and 2016 are as follows:

		2015
Type		Level 1		Level 2		Level 3		Total
		In millions of won
Financial assets at fair value
Available-for-sale financial assets	￦		196,579		—		180,390		376,969
Derivative assets			—		617,150		—		617,150
			196,579		617,150		180,390		994,119
Financial liabilities at fair value
Derivative liabilities			—		166,510		—		166,510

		2016
Type		Level 1		Level 2		Level 3		Total
		In millions of won
Financial assets at fair value
Available-for-sale financial assets	￦		268,171		437,015		269,461		974,647
Derivative assets			—		770,851		10,523		781,374
			268,171		1,207,866		279,984		1,756,021
Financial liabilities at fair value
Derivative liabilities			—		138,686		—		138,686

The fair value ofavailable-for-sale financial assets publicly traded is measured at the closing bid price quoted at the end of the reporting period. Meanwhile, the fair value of unquotedavailable-for-sale financial assets is calculated using the valuation results from an external pricing service in which weighted average borrowing rates of interest of evaluated companies are used as a discount rate. The fair value of derivatives is measured using valuation model which is determined at the present value of estimated future cash flows discounted at current market interest rate.

F-158

Changes of financial assets and liabilities which are classified as level 3 for the years ended December 31, 2015 and 2016 are as follows:

		2015
		Beginning balance		Acquisition		Reclassified category		Valuation		Disposal		Foreign currency translation		Ending balance
		In millions of won
Financial assets at fair value
Available-for-sale financial assets
Unlisted securities	￦		168,627		—		—		11,763		—		—		180,390

		2016
		Beginning balance		Acquisition		Reclassified category		Valuation			Disposal		Foreign currency translation		Ending balance
		In millions of won
Financial assets at fair value
Available-for-sale financial assets
Unlisted securities	￦		180,390		—		98,472		(9,401	)		—		—		269,461

46. Service Concession Arrangements

(1) Gas Complex Thermal Power Plant at Ilijan, Philippines (BOT)

(i) Significant terms and concession period of the arrangement

The Company has entered into a contract with National Power Corporation (the “NPC”), based in the Republic of the Philippines whereby the Company can collect the electricity rates which are composed of fixed costs and variable costs during the concession period after building, rehabilitating, and operating the power plant.

(ii) Rights and classification of the arrangement

The Company has the rights to use and own the power plant during the concession period from 2002 to 2022. At the end of the concession period, the Company has an obligation to transfer its ownership of the power plant to NPC.

(iii) The Company’s expected future collections of service concession arrangements as of December 31, 2016 are as follows:

Type		Amounts
		In millions of won
Less than 1 year	￦		126,233
1 ~ 2 years			126,233
2 ~ 3 years			126,233
Over 3 years			305,062
	￦		683,761

(2) Hydroelectric Power Generation at Semangka, Indonesia (BOT)

(i) Significant terms and concession period of the arrangement

The Company has entered into a contract with PT. Perusahaan Listrik Negara (the “PLN”) whereby the Company provides electricity generated and charge tariff rates designed to recover capital cost, fixed

F-159

O&M cost, water usage cost, variable O&M cost and special facilities cost during the concession period after building, rehabilitating, and operating the power plant for approximately 30 years (2017~2047) subsequent to the completion of plant construction.

(ii) Rights and classification of the arrangement

The Company has the rights to use and own the power plant during the concession period from 2017 to 2047. At the end of the concession period, PNL has an option to take over the ownership of the power plant from the Company.

(iii) The Company’s expected future collections of service concession arrangements as of December 31, 2016 are as follows:

Type		Amounts
		In millions of won
Less than 1 year	￦		9,210
1 ~ 2 years			30,739
2 ~ 3 years			30,051
Over 3 years			683,233
	￦		753,233

(iv) Accumulated contract costs and profits related to the Company’s contract in process as of December 31, 2016 were ￦113,362 million and ￦7,133 million, respectively. There are no amount due from customers and advance receipts in progress.

47. Related Parties

(1) Related parties of the Company as of December 31, 2016 are as follows:

Type	Related party
Parent	Republic of Korea government
Subsidiaries (87 subsidiaries)	Korea Hydro & Nuclear Power Co., Ltd., Korea South-East Power Co., Ltd., Korea Midland Power Co., Ltd., Korea Western Power Co., Ltd., Korea Southern Power Co., Ltd., Korea East-West Power Co., Ltd., KEPCO Engineering & Construction Company, Inc., KEPCO Plant Service & Engineering Co., Ltd., KEPCO Nuclear Fuel Co., Ltd., KEPCO KDN Co., Ltd., Garolim Tidal Power Plant Co., Ltd., Gyeonggi Green Energy Co., Ltd., Korea Offshore Wind Power Co., Ltd., KOSEP Material Co., Ltd., KEPCO International HongKong Ltd., KEPCO International Philippines Inc., KEPCO Philippines Corporation, KEPCO Ilijan Corporation, KEPCO Gansu International Ltd., KEPCO Philippines Holdings Inc., KEPCO Lebanon SARL, KEPCO Neimenggu International Ltd., KEPCO Australia Pty., Ltd., KEPCO Shanxi International Ltd., KOMIPO Global Pte Ltd., KOSEP Australia Pty., Ltd., KOMIPO Australia Pty., Ltd., KOWEPO Australia Pty., Ltd., KOMIPO Global Pte Ltd., KOSPO Australia Pty., Ltd., KEPCO Canada Energy Ltd., KEPCO Netherlands B.V., KOREA Imouraren Uranium Investment Corp., KEPCO Middle East Holding Company, Qatrana Electric Power Company, Korea Electric Power Nigeria Ltd., KOWEPO International Corporation, KOSPO Jordan LLC, Korea Waterbury Uranium Limited Partnership, PT. Cirebon Power Service, EWP America Inc., KHNP Canada Energy, Ltd., KEPCO Bylong Australia

F-160

Pty., Ltd., KNF Canada Energy Limited, KEPCO Holdings de Mexico, KST Electric Power Company, KEPCO Energy Service Company, KEPCO Netherlands S3 B.V., PT. KOMIPO Pembangkitan Jawa Bali, PT KEPCO Resource Indonesia, EWP Barbados 1 SRL, PT. Tanggamus Electric Power, KOMIPO America Inc., KOSEP USA, INC., PT. EWP Indonesia, KEPCO Netherlands J3 B.V., Global One Pioneer B.V., Global Energy Pioneer B.V., Mira Power Limited, EWP Philippines Corporation, KEPCO Singapore Holdings Pte., Ltd., KOWEPO India Private Limited, KEPCO KPS Philippines Corp., KOSPO Chile SpA, PT. KOWEPO Sumsel Operation And Maintenance Services, Commerce and Industry Energy Co., Ltd., Gyeongju Wind Power Co., Ltd., California Power Holdings, LLC, DG Fairhaven Power, LLC, DG Whitefield, LLC, EWP Renewable Co., EWPRC Biomass Holdings, LLC, Springfield Power, LLC, HeeMang Sunlight Power Co., Ltd., Fujeij Wind Power Company, KOSPO Youngnam Power Co., Ltd., Global One Carbon Private Equity Investment Trust 2., Chitose Solar Power Plant LLC., Solar School Plant Co., Ltd., KEPCO Energy Solution Co. Ltd., KOSPO Power Services Limitada, KOEN Bylong Pty., Ltd., KOWEPO Bylong Pty., Ltd., KOSPO Bylong Pty., Ltd., EWP Bylong Pty., Ltd., KOWEPO Lao International, KOMIPO Bylong Pty Ltd., Energy New Industry Specialized Investment Private Investment Trust

Associates (57 associates)

Dongducheon Dream Power Co., Ltd., Korea Gas Corporation, SE Green Energy Co., Ltd., Daegu Photovoltaic Co., Ltd., Jeongam Wind Power Co., Ltd., Korea Power Engineering Service Co., Ltd., Yeongwol Energy Station Co., Ltd., KS Solar Co., Ltd., Heang Bok Do Si Photovoltaic Power Co., Ltd., Korea Electric Power Industrial Development Co., Ltd., DS POWER Co., Ltd., Goseong Green Energy Co., Ltd., Gangneung Eco Power Co., Ltd., Shin Pyeongtaek Power Co., Ltd., Naepo Green Energy Co., Ltd., Noeul Green Energy Co., Ltd., YTN Co., Ltd., Cheongna Energy Co., Ltd., Samcheok Eco Materials Co., Ltd., Gangwon Wind Power Co., Ltd., Hyundai Green Power Co., Ltd., Korea Power Exchange, AMEC Partners Korea Ltd., Hyundai Energy Co., Ltd., Ecollite Co., Ltd., Taebaek Wind Power Co., Ltd., Taeback Guinemi Wind Power Co., Ltd. (formerly, Muju Wind Power Co., Ltd.), Pyeongchang Wind Power Co., Ltd., Daeryun Power Co., Ltd., Changjuk Wind Power Co., Ltd., KNH Solar Co., Ltd.,S-Power Co., Ltd., Hadong Mineral Fiber Co., Ltd., Green Biomass Co., Ltd., SPC Power Corporation, Gemeng International Energy Co., Ltd., PT. Cirebon Electric Power, KNOC Nigerian East Oil Co., Ltd., KNOC Nigerian West Oil Co., Ltd., PT Wampu Electric Power, PT. Bayan Resources TBK, Nepal Water & Energy Development Company Private Limited, Pioneer Gas Power Limited, Eurasia Energy Holdings,Xe-PianXe-Namnoy Power Co., Ltd., PT. Mutiara Jawa, Jinbhuvish Power Generation Pvt. Ltd., Busan Green Energy Co., Ltd., Jungbu Bio Energy Co., Ltd., Korea Electric Vehicle Charge Service, Ulleungdo Natural Energy Co., Ltd., Korea Nuclear Partners Co., Ltd., Tamra Offshore Wind Power Co., Ltd., Korea Electric Power Corporation Fund, Energy Infra Asset Management Co., Ltd., Daegu clean Energy Co., Ltd., YaksuESS Co.,Ltd

F-161

Joint ventures (41 joint ventures)

Daegu Green Power Co., Ltd., KEPCO SPC Power Corporation, Daejung Offshore Wind Power Co., Ltd., KAPES, Inc. (formerly, KEPCO-ALSTOM Power Electronics Systems, Inc.), Dangjin Eco Power Co., Ltd., Honam Wind Power Co., Ltd., Seokmun Energy Co., Ltd., Incheon New Power Co., Ltd., Chun-cheon Energy Co., Ltd., Yeonggwangbaeksu Wind Power Co., Ltd., KW Nuclear Components Co., Ltd., KEPCO-Uhde Inc., GS Donghae Electric Power Co., Ltd., Busan Shinho Solar Power Co., Ltd., Global Trade Of Power System Co., Ltd., Expressway Solar-light Power Generation Co., Ltd., Gansu Datang Yumen Wind Power Company Ltd., Datang Chifeng Renewable Power Co., Ltd., Rabigh Electricity Company, Eco Biomass Energy Sdn. Bhd., Rabigh Operation & Maintenance Company, Datang KEPCO Chaoyang Renewable Power Co., Ltd., Shuweihat Asia Power Investment B.V., Shuweihat Asia Operation & Maintenance Company, Waterbury Lake Uranium L.P.,ASM-BG Investicii AD, RES Technology AD, Jamaica Public Service Company Limited, KV Holdings, Inc., Datang Chaoyang Renewable Power Co., Ltd., KODE NOVUS I LLC, KODE NOVUS II LLC, Amman Asia Electric Power Company, Kelar S.A, PT. Tanjung Power Indonesia, Nghi Son 2 Power Ltd., Canada Korea Uranium Limited Partnership, Daehan Wind Power PSC, MOMENTUM, Barakah One Company, Nawah Energy Company

Others

Korea Development Bank

(2) Transactions between the Company and its subsidiaries are eliminated during the consolidation and are notdisclosed in notes.

(3) Related party transactions for the years ended December 31, 2014, 2015 and 2016 are as follows:

<Sales and Others>

				Sales and others
Company name	Transaction type			2014		2015		2016
				In millions of won
<Associates>
Daegu Green Power Co., Ltd.		Electricity sales	￦		1,320		1,055		—
Dongducheon Dream Power Co., Ltd.		Electricity sales			12,446		14,811		15,221
Korea Gas Corporation		Electricity sales			82,117		90,480		89,030
Gumi-ochang Photovoltaic Power Co., Ltd.		Electricity sales			14		—		—
Chungbuk Photovoltaic Power Co., Ltd		Electricity sales			6		—		—
Cheonan Photovoltaic Power Co., Ltd.		Electricity sales			2		—		—
Jeongam Wind Power Co., Ltd.		Electricity sales			8		8		6
Korea Power Engineering Service Co., Ltd.		Service			1,239		1,743		1,455
Golden Route J Solar Power Co., Ltd.		Electricity sales			1		—		—
Yeongwol Energy Station Co., Ltd.		Service			3,676		814		858
KOSCON Photovoltaic Co., Ltd.		Electricity sales			5		—		—
Yeonan Photovoltaic Co., Ltd.		Electricity sales			4		—		—
Q1 Solar Co., Ltd.		Electricity sales			13		—		—
Best Solar Energy Co., Ltd.		Electricity sales			16		—		—
Seokcheon Solar Power Co., Ltd.		Electricity sales			54		—		—
D Solar Energy Co., Ltd.		Electricity sales			8		—		—
KS Solar Co., Ltd.		Electricity sales			15		21		20
Hyundai Asan Solar Power Co., Ltd.		Electricity sales			8		—		—
Heang Bok Do Si Photovoltaic Power Co., Ltd.		Rental income and others			1		1		2
Jeonnam Solar Co., Ltd.		Electricity sales			16		—		—

F-162

			Sales and others
Company name	Transaction type		2014		2015		2016
			In millions of won
Korea Electric Power Industrial Development Co., Ltd.	Service	￦		15,852		12,361		10,723
DS POWER Co., Ltd.	Service			152,025		106,183		35,133
Goseong Green Energy Co., Ltd.	Electricity sales			4,004		9,306		9,195
Gangneung Eco Power Co., Ltd.	Service			6,446		9,761		5,223
Shin Pyeongtaek Power Co., Ltd.	Electricity sales			174		11,344		3,579
Naepo Green Energy Co., Ltd.	Electricity sales			8		66		104
Noeul Green Energy Co., Ltd.	Electricity sales			—		45		177
Samcheok Eco Materials Co., Ltd.	Electricity sales			—		—		64
YTN Co., Ltd.	Electricity sales			7,446		1,753		1,785
Busan Green Energy Co., Ltd.	Service			—		1		133
Jungbu Bio Energy Co., Ltd.	Electricity sales			—		—		6
Korea Electric Vehicle Charge Service	Electricity sales			—		2		89
Ulleungdo Natural Energy Co., Ltd.	Service			—		229		691
Tamra Offshore Wind Power Co., Ltd.,	Electricity sales			—		—		12
Cheongna Energy Co., Ltd.	Service			14,153		21,081		6,831
Gangwon Wind Power Co., Ltd.	Electricity sales			2,152		1,046		1,273
Hyundai Green Power Co., Ltd.	Electricity sales and design service			14,943		15,401		14,835
Korea Power Exchange	Service			16,300		4,272		7,141
Hyundai Energy Co., Ltd.	Service			58,566		25,402		24,719
Taebaek Wind Power Co., Ltd.	Service			1,653		872		796
Pyeongchang Wind Power Co., Ltd.	Design service			120		72		497
Daeryun Power Co., Ltd.	Electricity sales			1,611		1,731		1,516
Changjuk Wind Power Co., Ltd.	Electricity sales			1,848		754		863
KNH Solar Co., Ltd.	Electricity sales			17		17		17
S-Power Co., Ltd.	Service and electricity sales			7,564		7,278		5,994
Busan Solar Co., Ltd.	Electricity sales			17		16		8
Green Biomass Co., Ltd.	Electricity sales			—		51		2
SPC Power Corporation	Dividend income			—		1,433		8,346
PT. Bayan Resources TBK	Service			—		164		160
Gemeng International Energy Co., Ltd.	Dividend income			6,905		37,163		16,476
Dolphin Property Limited	Dividend income			—		—		35
E-POWER S.A.	Dividend income			1,456		—		—
Nepal Water & Energy Development Company Private Limited	Service			—		—		375
Pioneer Gas Power Limited	Service			214		274		164
Xe-PianXe-Namnoy Power Co., Ltd.	Service			1,333		584		773
<Joint ventures>
Daegu Green Power Co., Ltd.	Electricity sales			—		—		768
KEPCO SPC Power Corporation	Service			17,243		29,572		10,344
Daejung Offshore Wind Power Co., Ltd.	Electricity sales			—		1		1
KAPES, Inc. (formerly, KEPCO-ALSTOM Power Electronics Systems, Inc.)	Commission			1,129		1,315		1,176
Dangjin Eco Power Co., Ltd.	Technical fee			352		334		1,787
Honam Wind Power Co., Ltd.	Electricity sales			73		65		169
Seokmun Energy Co., Ltd.	Technical fee			1,910		2,395		1,627
Incheon New Power Co., Ltd.	Construction revenue			6,637		388		524
KW Nuclear Components Co., Ltd.	Service			2,307		1,948		3,327
Chun-cheon Energy Co., Ltd.	Technical fee			—		2,201		3,079

F-163

			Sales and others
Company name	Transaction type		2014		2015		2016
			In millions of won
Yeonggwangbaeksu Wind Power Co., Ltd.	Electricity sales	￦		—		927		1,591
KEPCO-Uhde Inc.	Service			—		—		6
GS Donghae Electric Power Co., Ltd.	Electricity sales			4,053		5,614		12,994
Busan Shinho Solar Power Co., Ltd.	Electricity sales			24		24		210
Yeongam Wind Power Co., Ltd.	Electricity sales			47		—		—
Global Trade Of Power System Co., Ltd.	Electricity sales			39		—		—
Datang Chifeng Renewable Power Co., Ltd.	Interest income			10,849		9,702		8,216
Rabigh Electricity Company	Interest income			38,954		565		699
Rabigh Operation & Maintenance Company	Service			2,822		1,780		2,395
Datang Chaoyang Renewable Power Co., Ltd.	Dividend income			740		—		—
Shuweihat Asia Power Investment B.V.	Dividend income			—		—		2,957
Shuweihat Asia Operation & Maintenance Company	Service			869		1,006		1,179
ASM-BG Investicii AD	Service			—		—		322
Jamaica Public Service Company Limited	Service			2,865		3,077		1,905
KV Holdings, Inc.	Dividend income			—		—		302
Datang KEPCO Chaoyang Renewable Power Co., Ltd.	Dividend income			788		—		440
Amman Asia Electric Power Company	Service			26,838		48,968		21,915
Kelar S.A	Service			2,041		6,229		1,702
Barakah One Company	Service			—		—		25,244
<Others>
Korea Development Bank	Electricity sales			1,141		4,039		3,102
	Interest income			—		2,402		3,164

<Purchase and Others>

			Purchase and others
Company name	Transaction type		2014		2015		2016
			In millions of won
<Associates>
Daegu Green Power Co., Ltd.	Electricity purchase	￦		—		318,221		—
Korea Gas Corporation	Purchase of power generation fuel			10,134,526		4,598,763		3,633,198
Dongducheon Dream Power Co., Ltd.	Electricity purchase			—		1,003,346		946,463
Gumi-ochang Photovoltaic Power Co., Ltd.	REC purchase			1,789		—		—
Chungbuk Photovoltaic Power Co., Ltd.	REC purchase			575		—		—
Cheonan Photovoltaic Power Co., Ltd.	REC purchase			435		—		—
Daegu Photovoltaic Co., Ltd.	REC purchase			3,552		3,978		3,243
Korea Power Engineering Service Co., Ltd.	Service			2,320		3,241		723
Golden Route J Solar Power Co., Ltd.	REC purchase			518		—		—
Yeongwol Energy Station Co., Ltd.	REC purchase			8,640		16,408		14,875
KOSCON Photovoltaic Co., Ltd.	REC purchase			243		—		—
Yeonan Photovoltaic Co., Ltd.	REC purchase			635		—		—
Q1 Solar Co., Ltd.	REC purchase			2,501		—		—
Best Solar Energy Co., Ltd.	REC purchase			4,882		—		—
Seokcheon Solar Power Co., Ltd.	REC purchase			1,193		—		—
D Solar Energy Co., Ltd.	REC purchase			1,163		—		—
Daeryun Power Co., Ltd.	Electricity purchase			—		274,379		244,023
Ulleungdo Natural Energy Co., Ltd.	Electricity purchase			—		—		60
KS Solar Co., Ltd.	REC purchase			3,496		6,211		4,080
Hyundai Asan Solar Power Co., Ltd.	REC purchase			606		—		—

F-164

			Purchase and others
Company name	Transaction type		2014		2015		2016
			In millions of won
Heang Bok Do Si Photovoltaic Power Co., Ltd.	Rental fee and others	￦		119		479		410
Korea Electric Power Industrial Development Co., Ltd.	Electricity metering service fee			240,416		273,057		250,057
YTN Co., Ltd.	Advertisement fee			410		440		554
Cheongna Energy Co., Ltd.	Service			—		—		73
Gangwon Wind Power Co., Ltd.	Electricity purchase			28,836		21,946		22,780
Hyundai Green Power Co., Ltd.	Electricity purchase			477,642		486,443		469,547
Korea Power Exchange	Trading Fees			74,861		79,283		91,433
Hyundai Energy Co., Ltd.	Electricity purchase			2,961		1,684		1,313
Taebaek Wind Power Co., Ltd.	REC purchase			10,362		6,626		5,741
Pyeongchang Wind Power Co., Ltd.	Service			—		—		1,594
Changjuk Wind Power Co., Ltd.	Electricity purchase			15,549		6,472		5,786
KNH Solar Co., Ltd.	Electricity purchase			4,914		4,598		4,006
S-Power Co., Ltd.	Service			105,107		614,658		437,206
Busan Solar Co., Ltd.	Electricity purchase			4,910		4,055		1,079
Green Biomass Co., Ltd.	Woodchip purchase			1,690		3,782		2,232
<Joint ventures>
Daegu Green Power Co., Ltd.	Electricity purchase			—		—		263,797
KAPES, Inc. (formerly, KEPCO-ALSTOM Power Electronics Systems, Inc.)	Service			383		47,130		140,555
Honam Wind Power Co., Ltd.	Electricity purchase			5,304		5,944		6,776
Yeonggwangbaeksu Wind Power Co., Ltd.	Electricity purchase			—		4,974		11,208
GS Donghae Electric Power Co., Ltd.	Service			—		—		903
Busan Shinho Solar Power Co., Ltd.	REC purchase			8,115		7,565		6,770
Yeongam Wind Power Co., Ltd.	REC purchase			7,080		—		—
Global Trade Of Power System Co., Ltd.	Service			79		192		882
Expressway Solar-light Power Co., Ltd.	Electricity purchase			3,205		3,451		2,942
Jamaica Public Service Company Limited	Service			96		106		127
Amman Asia Electric Power Company	Service			—		125		—
<Others>
Korea Development Bank	Interest expense			60,631		21,719		8,231
	Dividend paid			17,294		96,087		654,829

(4) Receivables and payables arising from related party transactions as of December 31, 2015 and 2016 are as follows:

			Receivables				Payables
Company name	Type		2015		2016		2015		2016
			In millions of won
<Associates>
Dongducheon Dream Power Co., Ltd.	Trade receivables	￦		1,206		1,073		—		—
	Trade payables			—		—		100,396		93,493
Korea Gas Corporation	Trade receivables			7,931		8,739		—		—
	Non-trade receivables and others			255		78		—		—
	Trade payables			—		—		302,752		399,563
	Non-trade payables and others			—		—		—		9,090
Daegu Photovoltaic Co., Ltd.	Trade payables			—		—		—		56
Jeongam Wind Power Co., Ltd.	Non-trade payables and others			—		—		1		4

F-165

			Receivables				Payables
Company name	Type		2015		2016		2015		2016
			In millions of won
Yeongwol Energy Station Co., Ltd.	Trade receivables	￦		7,063		7,064		—		—
	Trade payables			—		—		229		229
KS Solar Co., Ltd.	Trade receivables			2		2		—		—
	Trade payables			—		—		68		53
	Non-trade payables and others			—		—		281		—
Korea Electric Power Industrial Development Co., Ltd.	Trade receivables			469		362		—		—
	Non-trade receivables and others			27		47		—		—
	Non-trade payables and others			—		—		27,569		18,628
DS Power Co., Ltd.	Trade receivables			260		1,775		—		—
	Non-trade payables and others			—		—		135		—
Goseong Green Energy Co., Ltd.	Non-trade payables and others			—		—		3,900		3,900
Gangneung Eco Power Co., Ltd.	Trade receivables			1		1		—		—
	Non-trade receivables and others			1,701		2,137		—		—
Shin Pyeongtaek Power Co., Ltd.	Non-trade receivables and others			272		215		—		—
Naepo Green Energy Co., Ltd.	Trade receivables			9		14		—		—
Noeul Green Energy Co., Ltd.	Trade receivables			—		18		—		—
Samcheok Eco Materials Co., Ltd.	Trade receivables			—		21		—		—
YTN Co., Ltd.	Trade receivables			93		165		—		—
	Non-trade payables and others			—		—		154		132
Busan Green Energy Co., Ltd.	Trade receivables			—		9		—		—
Korea Electric Vehicle Charge Service	Trade receivables			—		12		—		—
Ulleungdo Natural Energy Co., Ltd.	Non-trade receivables and others			—		111		—		—
Cheongna Energy Co., Ltd.	Trade receivables			157		165		—		—
	Non-trade receivables and others			375		—		—		—
	Non-trade payables and others			—		—		—		82
Gangwon Wind Power Co., Ltd.	Trade receivables			12		8		—		—
	Trade payables			—		—		1,753		2,031
Hyundai Green Power Co., Ltd.	Trade receivables			962		569		—		—
	Trade payables			—		—		36,079		31,507
Korea Power Exchange	Trade receivables			1,452		1,066		—		—
	Non-trade receivables and others			112		53		—		—
	Trade payables			—		—		3,529		—
	Non-trade payables and others			—		—		1,529		1,235
Hyundai Energy Co., Ltd.	Trade receivables			44,510		72		—		—
	Non-trade receivables and others			—		68,798		—		—
	Trade payables			—		—		178		86
	Non-trade payables and others			—		—		8,030		—
Ecollite Co., Ltd.	Non-trade receivables and others			210		210		—		—

F-166

			Receivables				Payables
Company name	Type		2015		2016		2015		2016
			In millions of won
Taebaek Wind Power Co., Ltd.	Non-trade receivables and others	￦		147		112		—		—
	Trade payables			—		—		349		386
	Non-trade payables and others			—		—		—		304
Pyeongchang Wind Power Co., Ltd.	Trade receivables			—		4		—		—
	Non-trade receivables and others			170		—		—		—
	Non-trade payables and others			—		—		—		255
Daeryun Power Co., Ltd.	Trade receivables			117		140		—		—
	Trade payables			—		—		27,374		21,646
Changjuk Wind Power Co., Ltd.	Non-trade receivables and others			153		100		—		—
	Trade payables			—		—		—		358
	Non-trade payables and others			—		—		330		334
KNH Solar Co., Ltd.	Trade receivables			2		1		—		—
	Non-trade payables and others			—		—		—		204
S-Power Co., Ltd.	Trade receivables			121		142		—		—
	Non-trade receivables and others			—		393		—		—
	Trade payables			—		—		54,141		51,844
Green Biomass Co., Ltd.	Non-trade receivables and others			109		—		—		—
	Non-trade payables and others			—		—		152		113
Nepal Water & Energy Development Company Private Limited	Non-trade receivables and others			—		889		—		—
Pioneer Gas Power Limited	Non-trade receivables and others			26		82		—		—
Xe-PianXe-Namnoy Power Co., Ltd.	Non-trade receivables and others			—		58		—		—
<Joint ventures>
Daegu Green Power Co., Ltd.	Trade receivables			95		52		—		—
	Non-trade receivables and others			—		1		—		—
	Trade payables			—		—		22,200		27,400
KEPCO SPC Power Corporation	Non-trade receivables and others			252		2,349		—		—
KAPES, Inc. (formerly, KEPCO-ALSTOM Power Electronics Systems, Inc.)	Non-trade receivables and others			251		235		—		—
	Non-trade payables and others			—		—		61		11,992
Dangjin Eco Power Co., Ltd.	Non-trade receivables and others			300		833		—		—
Honam Wind Power Co., Ltd.	Trade payables			—		—		342		424
	Non-trade payables and others			—		—		2,124		3,082
Seokmun Energy Co., Ltd.	Trade receivables			—		114		—		—
	Non-trade receivables and others			2,086		160		—		—
Incheon New Power Co., Ltd.	Trade receivables			128		128		—		—
Chun-cheon Energy Co., Ltd.	Non-trade receivables and others			112		255		—		—
Yeonggwangbaeksu Wind Power Co., Ltd.	Trade receivables			7		6		—		—
	Non-trade receivables and others			136		145		—		—
	Trade payables			—		—		627		761
	Non-trade payables and others			—		—		2,000		1,362

F-167

			Receivables				Payables
Company name	Type		2015		2016		2015		2016
			In millions of won
KEPCO-Uhde Inc.	Non-trade payables and others	￦		—		—		—		4
GS Donghae Electric Power Co., Ltd.	Trade receivables			970		775		—		—
	Non-trade receivables and others			1,216		1,497		—		—
	Non-trade payables and others			—		—		—		993
Busan Shinho Solar Power Co., Ltd.	Trade receivables			2		3		—		—
	Trade payables			—		—		272		129
	Non-trade payables and others			—		—		970		670
Datang Chifeng Renewable Power Co., Ltd.	Non-trade receivables and others			368		210		—		—
Rabigh Operation & Maintenance Company	Trade receivables			—		2,275		—		—
	Non-trade receivables and others			1,780		—		—		—
ASM-BG Investicii AD	Non-trade receivables and others			—		64		—		—
Jamaica Public Service Company Limited	Trade receivables			1,193		615		—		—
	Non-trade receivables and others			581		—		—		—
Amman Asia Electric Power Company	Trade receivables			739		2,509		—		—
<Others>
Korea Development Bank	Accrued interest income			212		672		—		—
	Non-trade receivables and others			45,623		217,481		—		—
	Non-trade payables and others			—		—		493		408
	Derivatives			3,777		25,306		2,313		3,278

F-168

(5) Loans and others arising from related party transactions as of December 31, 2015 and 2016 are as follows:

Type	Company name		Beginning balance			Loans			Collection			Others			Ending balance
			In millions of won
Associates	KNOC Nigerian East Oil Co., Ltd.,	￦		28,296			129			—			857			29,282
	KNOC Nigerian West Oil Co., Ltd.
	(Allowance for doubtful accounts)			(17,755	)		—			—			(436	)		(18,191	)
Associates	PT. Cirebon Electric Power			40,979			2,976			(17,838	)		616			26,733
Associates	PT. Mutiara Jawa			450			—			(450	)		—			—
Associates	Xe-PianXe-Namnoy Power Co., Ltd.			1,413			—			—			—			1,413
Associates	PT Wampu Electric Power			—			13,465			—			557			14,022
Associates	Jungbu Bio Energy Co., Ltd.			—			9,000			—			396			9,396
Associates	Hyundai Energy Co., Ltd.			—			2,465			—			—			2,465
Joint ventures	KEPCO SPC Power Corporation			29,651			—			(2,669	)		813			27,795
Joint ventures	Datang Chifeng Renewable Power Co., Ltd.			23,775			—			(7,847	)		416			16,344
Joint ventures	Jamaica Public Service Company Limited			2,345			—			(2,322	)		(23	)		—
Joint ventures	Rabigh Electricity Company			45,552			—			(42,594	)		(317	)		2,641
Joint ventures	KODE NOVUS II LLC			—			1,360			—			3,172			4,532
	(Allowance for doubtful accounts)			—			(4,352	)		—			(180	)		(4,532	)
	Daehan Wind Power PSC			—			683			—			—			683
		￦		154,706			25,726			(73,720	)		5,871			112,583

(6) Borrowings arising from related party transactions as of December 31, 2015 and 2016 are as follows:

Related parties	Type		Beginning balance		Borrowings		Repayment			Others			Ending balance
			In millions of won
Korea Development	Facility	￦		261,437		33,958		(87,402	)		—			207,993
Bank	Others			6,418		—		(755	)		—			5,663
	Operating funds			12,000		25,000		—			—			37,000
	Syndicated Loan					6,344		—			(269	)		6,075

F-169

(7) Guarantees provided to associates or joint ventures as of December 31, 2016 are as follows:

Primary guarantor	Secondary guarantor	Type of guarantees	Credit limit		Guarantee
In millions of won and thousands of foreign currencies
Korea Electric Power Corporation	KEPCO SPC Power Corporation	Debt guarantees		USD 71,192	SMBC, Export-Import Bank of Korea and ADB
Korea Electric Power Corporation	Shuweihat Asia Operation & Maintenance Company	Performance guarantees		USD 11,000	SAPCO
Korea Electric Power Corporation	KNOC Nigerian East Oil Co., Ltd. and KNOC Nigerian West Oil Co., Ltd.	Performance guarantees		USD 34,650	Korea National Oil Corporation (Nigerian government)
Korea Electric Power Corporation	Rabigh Operation & Maintenance Company	Performance guarantees and others		USD 1,387	RABEC
Korea Electric Power Corporation	Nghi Son 2 Power Ltd.	Bidding guarantees		USD 10,000	SMBC Ho Chi Minh
Korea Electric Power Corporation	Barakah One Company	Debt guarantees		USD 900,000	Export-Import Bank of Korea and others
		Performance guarantees and others		USD 3,404,275
Korea Western Power Co., Ltd.	Cheongna Energy Co., Ltd.	Collateralized money invested		KRW 27,211	KEB Hana Bank and others
		Guarantees for supplemental funding and others (*1)		—
Korea Western Power Co., Ltd.	Xe-PianXe-Namnoy Power Co., Ltd.	Payment guarantees for business reserve		USD 2,500	Krung Thai Bank
		Collateralized money invested		USD 43,276
		Impounding bonus guarantees		USD 5,000	SK E&C
Korea Western Power Co., Ltd.	Rabigh Operation & Maintenance Company	Performance guarantees and others		SAR 5,600	Saudi Arabia British Bank
Korea Western Power Co., Ltd.	Daegu Photovoltaic Co., Ltd.	Collateralized money invested		KRW 1,230	IBK
Korea Western Power Co., Ltd.	Dongducheon Dream Power Co., Ltd.	Collateralized money invested		KRW 111,134	Kookmin Bank and others
Korea Western Power Co., Ltd.	PT. Mutiara Jawa	Collateralized money invested		USD 2,610	Woori Bank
Korea Western Power Co., Ltd.	Heang Bok Do Si Photovoltaic Power Co., Ltd.	Collateralized money invested		KRW 194	Nonghyup Bank
Korea Western Power Co., Ltd.	Shin Pyeongtaek Power Co., Ltd.	Collateralized money invested		KRW 40	Kookmin Bank

F-170

Primary guarantor	Secondary guarantor	Type of guarantees	Credit limit		Guarantee
In millions of won and thousands of foreign currencies
Korea East-West Power Co., Ltd.	Busan Shinho Solar Power Co., Ltd.	Collateralized money invested		KRW 2,100	Heungkuk Life Insurance Co., Ltd. and others
Korea East-West Power Co., Ltd.	Seokmun Energy Co., Ltd.	Collateralized money invested		KRW 580	KEB Hana Bank and others
		Guarantees for supplemental funding(*1)		KRW 15,370
Korea East-West Power Co., Ltd.	Chun-cheon Energy Co., Ltd.	Collateralized money invested		KRW 52,700	Kookmin Bank and others
		Guarantees for supplemental funding(*1)		KRW 60,270
Korea East-West Power Co., Ltd.	Honam Wind Power Co., Ltd.	Collateralized money invested		KRW 3,480	Shinhan Bank
Korea East-West Power Co., Ltd.	GS Donghae Electric Power Co., Ltd.	Collateralized money invested		KRW 204,000	Korea Development Bank and others
Korea East-West Power Co., Ltd.	Yeonggwangbaeksu Wind Power Co., Ltd.	Collateralized money invested		KRW 3,000	Hyundai Marine & Fire Insurance Co., Ltd. and others
Korea East-West Power Co., Ltd.	PT. Tanjung Power Indonesia	Debt guarantees		USD 49,221	The Bank of Tokyo-Mitsubishi
Korea Southern Power Co., Ltd.	KNH Solar Co., Ltd.	Collateralized money invested Performance guarantees and guarantees for supplemental funding and others(*1)		KRW 1,296 —	Shinhan Bank and Kyobo Life Insurance Co., Ltd.
Korea Southern Power Co., Ltd.	Daeryun Power Co., Ltd.	Collateralized money invested Guarantees for supplemental funding and others(*1)		KRW 25,477 —	Korea Development Bank and others
Korea Southern Power Co., Ltd.	Changjuk Wind Power Co., Ltd.	Collateralized money invested Guarantees for supplemental funding(*1)		KRW 3,801 —	Shinhan Bank and Woori Bank
Korea Southern Power Co., Ltd.	Daegu Green Power Co., Ltd.	Collateralized money invested		KRW 46,226	Shinhan Bank
Korea Southern Power Co., Ltd.	KS Solar Co., Ltd.	Collateralized money invested		KRW 637	Shinhan Capital Co., Ltd.
Korea Southern Power Co., Ltd.	Kelar S.A	Performance guarantees		USD 50,700	KEB Hana Bank, SMBC, Mizuho Bank, BTMU, Natixis
		Debt guarantees		USD 132,600	BANCO SANTANDER-CHILE, SMBC, Mizuho Bank

F-171

Primary guarantor	Secondary guarantor	Type of guarantees	Credit limit		Guarantee
In millions of won and thousands of foreign currencies
Korea Southern Power Co., Ltd.	DS Power Co., Ltd.	Collateralized money invested Guarantees for supplemental funding and others(*1)		KRW 2,900 —	Korea Development Bank and others
Korea Southern Power Co., Ltd.	Pyeongchang Wind Power Co., Ltd.	Collateralized money invested Performance guarantees and guarantees for supplemental funding and others(*1)		KRW 3,875 —	Woori Bank and Shinhan Bank
Korea Southern Power Co., Ltd.	Taebaek Wind Power Co., Ltd.	Guarantees for supplemental funding and others(*1)		—	Shinhan Bank
KEPCO Engineering & Construction Company, Inc.	DS Power Co., Ltd.	Collateralized money invested		KRW 15,000	Korea Development Bank and others
Korea Midland Power Co., Ltd.	Hyundai Green Power Co., Ltd.	Collateralized money invested Guarantees for supplemental funding and others(*1)		KRW 87,003 —	Korea Development Bank and others
Korea Midland Power Co., Ltd.	PT. Cirebon Electric Power	Debt guarantees		USD 9,653	Mizuho Bank
Korea Midland Power Co., Ltd.	PT Wampu Electric Power	Debt guarantees		USD 5,367	SMBC
Korea Midland Power Co., Ltd.	Gangwon Wind Power Co., Ltd.	Collateralized money invested		KRW 7,409	IBK and others
Korea South-East Power Co., Ltd.	Hyundai Energy Co., Ltd.	Collateralized money invested		KRW 47,067	Korea Development Bank and others
		Performance guarantees and guarantees for supplemental funding and others(*1)		KRW 78,600
Korea South-East Power Co., Ltd.	RES Technology AD	Collateralized money invested Debt guarantees		KRW 15,595 EUR 4,271	Korea Development Bank and others
Korea South-East Power Co., Ltd.	ASM-BG Investicii AD	Collateralized money invested Debt guarantees		KRW 16,101 EUR 4,175	Korea Development Bank and others
Korea South-East Power Co., Ltd.	Express Solar-light Power Generation Co., Ltd.	Guarantees for supplemental funding and others (*1, 2)		KRW 2,500	Woori Bank
Korea South-East Power Co., Ltd.	S-Power Co., Ltd.	Collateralized money invested		KRW 132,300	Korea Development Bank and others
KOSEP USA, INC.	KODE NOVUS II LLC	Guarantees for supplemental funding and others(*1)		USD 3,750	Korea Development Bank
KOSEP USA, INC.	KODE NOVUS I LLC	Guarantees for supplemental funding and others(*1)		—	Export-Import Bank of Korea and others
Korea Hydro & Nuclear Power Co., Ltd.	Yeongwol Energy Station Co., Ltd.	Collateralized money invested		KRW 1,400	Meritz Fire & Marine Insurance Co., Ltd.

F-172

Primary guarantor	Secondary guarantor	Type of guarantees	Credit limit		Guarantee
In millions of won and thousands of foreign currencies
Korea Hydro & Nuclear Power Co., Ltd.	Noeul Green Energy Co., Ltd.,	Collateralized money invested		KRW 1,740	KEB Hana Bank and others
Korea Hydro & Nuclear Power Co., Ltd.	Busan Green Energy Co., Ltd.	Collateralized money invested		KRW 14,564	Shinhan Bank and others
KEPCO Plant Service & Engineering Co., Ltd.	Incheon New Power Co., Ltd.	Collateralized money invested		KRW 6,800	Shinhan Bank
		Guarantees for supplemental funding and others(*1)		—

(*1) The Company guarantees to provide supplemental funding for business with respect to excessive business expenses or insufficient repayment of borrowings.

(*2) The Company has granted the right to Hana Financial Investment Co., Ltd., as an agent for the creditors to Express Solar-light Power Generation Co., Ltd. (“ESPG”), to the effect that in the event of acceleration of ESPG’s payment obligations under certain borrowings to such creditors, Hana Financial may demand the Company to dispose of shares in ESPG held by the Company and apply the resulting proceeds to repayment of ESPG’s obligations.

(8) As of December 31, 2016, there is no financial guarantee contract provided by related parties.

(9) Derivatives transactions with related parties as of December 31, 2016 are as follows:

(i) Currency Swap

Counterparty	Contract year			Contract Amount				Contract interest rate per annum							Contract exchange rate
				Pay		Receive		Pay(%)			Receive(%)
	In millions of won and thousands of U.S. dollars
Korea Development Bank		2016~2019	￦		105,260		USD 100,000		2.48	%		2.38	%	￦		1,052.60
		2015~2025			111,190		USD 100,000		2.62	%		3.25	%			1,111.90
		2016~2021			121,000		USD 100,000		2.15	%		2.50	%			1,210.00

(ii) Interest Rate Swap

Counterparty	Contract year		Contract amount		Contract interest rate per annum
					Pay (%)			Receive (%)
	In millions of won
Korea Development Bank(*)		2014~2029		40,000		3M CD – 0.03	%		4.65	%

(*) The contract is an interest rate swap hedging on Electricity Bonds 885, and the banks would notify the Company of the early termination every year on the early termination notification date (every year on April 28, from 2017 until 2028). The contract will be terminated if the early termination is notified.

F-173

(10) Salaries and other compensations to the key members of management of the Company for the years ended December 31, 2014, 2015 and 2016 are as follows:

Type		2014			2015		2016
		In millions of won
Salaries	￦		993	��		1,271		1,463
Employee benefits			44			59		33
	￦		1,037			1,330		1,496

48. Non-Cash Transactions

Significantnon-cash investing and financing transactions for the years ended December 31, 2014, 2015 and 2016 are as follows:

Transactions		2014		2015		2016
		In millions of won
Transfer fromconstruction-in-progress to other assets	￦		9,465,204		10,491,054		19,971,599
Recognition of asset retirement cost and related provision for decommissioning costs			282,396		699,673		470,941
Transfer from provision for disposal of spent nuclear fuel to accrued expenses			377,697		491,755		283,675

49. Commitments for Expenditure

(1) The agreements for acquisition of property, plant and equipment as of December 31, 2015 and 2016 are as follows:

		2015				2016
Contracts		Amounts		Balance		Amounts		Balance
		In millions of won
Purchase of cable (PVC, 1C, 2500SQ) 103,374M and others (Bukdangjin-Shintangjung)	￦		—		—		42,500		42,500
Purchase of GIS (800KV 8000A 50KA) 10CB – SinjungbuS/S			—		—		63,730		63,730
Purchase of GIS (362KV 6300A 63KA) 26CB – SingosungS/S			—		—		36,950		19,897
Purchase of GIS (362KV 6300A 63KA) 27CB – KwangyangS/S			—		—		37,476		27,760
Purchase of GIS (362KV 6300A 63KA) and 1 other 18CB – BukbusanS/S			—		—		34,000		20,766
Purchase of cable (TRCNCE-W/AL,1C,400SQ)			—		—		71,986		50,593
Purchase of cable (TRCNCE-W,600MM2, 13, 2KV)			50,581		50,581		50,581		—
Purchase of transformer (765/345/23kV 666.7MVA, 2TANK) 6 units – ShinjungbuS/S			—		—		37,500		37,500
Purchase of Ground Switch(44-D-A125, 600AX4)			43,624		42,912		43,624		—
Purchase of Concrete Poles (10M, 350KGF)			—		—		129,175		105,905
Purchase of Concrete Poles (10M, 350KGF)			106,037		74,549		106,037		—
Purchase of switch (25.8kV Eco)			—		—		40,226		28,072
Purchase of cable (PVC,1C,2000SQ)			—		—		50,256		50,256
Construction of New Kori units (#3,4)			6,856,150		214,678		6,856,150		—
Construction of New Kori units (#5,6)			8,625,387		7,899,368		8,625,387		7,286,503
Construction of New Hanwool units (#1,2)			7,982,343		2,578,707		7,982,342		1,157,700
Construction of New Hanwool units (#3,4)			8,261,817		8,238,651		8,261,818		8,170,896

F-174

		2015				2016
Contracts		Amounts		Balance		Amounts		Balance
		In millions of won
Construction of Yeosu Thermal Power units (#1)	￦		489,440		30,853		174,291		1,139
Other 31 contracts			199,846		140,563		430,204		222,555
Purchase of main machine for construction of Seoul Combined units (#1,2)			360,500		328,210		360,500		300,663
Construction of Seoul Combined units (#1,2)			227,000		182,630		225,205		129,589
Electricity construction of New Boryeong units (#1,2)			245,357		36,893		354,740		26,878
Purchase of smoke eliminating machine for construction of New Boryeong units (#1,2)			118,058		8,775		121,093		2,023
Purchase of coal handling machine for construction of New Boryeong units (#1,2)			146,353		25,266		146,353		3,543
Service of designing New Boryeong units (#1,2)			126,038		32,910		126,038		24,333
Purchase of main machine for construction of New Boryeong units (#1,2)			851,132		137,744		851,132		10,746
Construction of New Boryeong units (#1,2)			246,964		10,859		288,438		17,828
Purchase of factory process piping of New Boryeong units (#1,2)			37,294		11		37,294		—
Purchase of processing plant of New Boryeong units (#1,2)			33,269		9,116		34,490		—
Construction of port facilities for New Boryeong units (#1,2)			78,166		—		78,166		—
Purchase of generator for Wonju RDF combined & heat power plant			52,877		—		52,877		—
Purchase of main machine for Heang Bok Do Si combined & heat power plant			337,283		—		337,283		—
Purchase of coal handling machine for construction of Taean (#9,10) and IGCC units (conditional contract for installation)			146,634		9,943		192,945		38,218
Purchase of furnace for construction of Taean units (#9,10)			546,637		66,271		584,148		46,059
Service of designing Taean units (#9,10)			107,516		26,437		109,700		18,981
Purchase of desulfurization machine for construction of Taean units (#9,10)			91,592		6,175		92,086		1,017
Purchase of turbine generator for construction of Taean units (#9,10)			426,139		103,146		228,794		6,788
Purchase of gas plant machine for construction of Taean IGCC units			457,423		4,541		457,991		—
Purchase of combined generating machine for construction of Taean IGCC units			204,514		25,808		208,972		2,102
Purchase of oxygen plant for construction of Taean IGCC units			97,804		4,252		98,979		221
Service of designing Taean IGCC plant units			44,374		5,520		44,802		3,342
Construction of Samcheok units (#1,2)			384,716		27,018		457,943		15,851
Purchase of furnace for construction of Samcheok units (#1,2)			1,091,303		115,896		1,091,303		51,594
Purchase of coal handling machine for construction of Samcheok units (#1,2)			290,417		23,795		303,273		155
Service of designing Samcheok units (#1,2)			112,949		42,631		114,047		36,510
Service of designing Dangjin units (#9,10)			109,340		16,261		122,426		6,125
Construction of yard for Andong natural gas power plant			40,960		2,528		41,961		2,600
Purchase of main equipment			152,286		138,057		152,286		39,248

F-175

(2) As of December 31, 2016, details of contracts for inventory purchase commitment are as follows:

The Company imports all of its uranium ore concentrates from sources outside Korea (including the United States, United Kingdom, Kazakhstan, France, Russia, South Africa, Canada and Australia) which are paid for with currencies other than Won, primarily in U.S. dollars. In order to ensure stable supply, the Company entered into long-term and medium-term contracts with various suppliers, and supplements such supplies with purchases of fuels on spot markets. The long-term and medium-term contract periods vary among contractors and the stages of fuel manufacturing process. Contract prices for processing of uranium are generally based on market prices. Contract periods for ore concentrates, conversion, enrichment and design and fabrication are as follows:

Type	Periods		Contracted amounts
Concentrate		2016 ~ 2030		34,719 Ton U3O8
Transformed		2016 ~ 2022		18,738 Ton U
Enrichment		2016 ~ 2029		34,879 Ton SWU
Molded		2016 ~ 2022		1,852 Ton U

50. Contingencies and Commitments

(1) Ongoing litigations related with contingent liabilities and assets as of December 31, 2015 and 2016 are as follows:

	2015				2016
	Number of cases		Claim amount		Number of cases		Claim amount
	In millions of won
As the defendant		750	￦	1,052,301		675	￦	636,433
As the plaintiff		202		580,987		193		489,605

As of December 31, 2016, in addition to the litigations mentioned above, there are ongoing litigations of Korea Hydro & Nuclear Power Co., Ltd. (“KHNP”), a subsidiary of KEPCO, against KEPCO Engineering & Construction Company, Inc., a subsidiary of KEPCO, as aco-defendant (one case amounting to ￦62,744 million) and KEPCO Plant Service & Engineering Co., Ltd., a subsidiary of KEPCO, as aco-defendant (two cases amounting to ￦201 million).

A national litigation agency filed a lawsuit against NSSC regarding NSSC’s approval to continue operation of Wolsong Unit 1 nuclear power plant and it is ongoing as of December 31, 2016.

The Company is the defendant against a number of claims. The followings are potentially significant claims pertaining to the Company.

① Hyundai Engineering & Construction Co., Ltd.(“Hyundai E&C”), SK Engineering & Construction Co., Ltd. and GS Engineering & Construction Co., Ltd. filed a lawsuit for increase in contract bill (formerly, amounted to ￦1,000 million) against KHNP in September 2013, in relation to the design changes on the plant construction of New Hanwool 1 & 2. Hyundai Engineering & Construction Co., Ltd. and two other companies increased the contract bill to ￦133,426 million in October 2014 and ￦204,040 million in November 2015, respectively, and submitted an application to demand extra contract payments due to the design changes. KHNP has paid ￦217,624 million of the claim amounts in full upon the first ruling in November 2016 and recognized the amount as addition toconstruction-in-progress accordingly. KHNP has made an appeal against the first ruling and the lawsuit is currently ongoing.

② In December 2013, the Supreme Court of Korea ruled that regular bonuses also fall under the category of ordinary wages on the condition that those bonuses are paid regularly and uniformly. Also, the Supreme Court ruled that employees are entitled to retroactively demand certain wages based on the new ordinary wages that include regular bonuses as additional wages. However, the request may be limited to the extent of the principle of good faith.

F-176

The Company believes that the possibility of economic outflow is probable on the ongoing and the expected lawsuit. For this reason, the Company recognized ￦178,572 million of other provision in relation to the lawsuit.

Except these significant claims, there are seven arbitration cases pertaining to the Company as of December 31, 2016 and the significant arbitration cases are as follows:

① KEPCO and KEPCO KDN Co., Ltd., a subsidiary of KEPCO, have been accused of breach of contract in relation to ERP software, which is provided by SAP Korea Ltd. The litigation was filed in the International Chamber of Commerce International Court of Arbitration but the Company has not recognized any provision because the probability of economic benefit outflow is remote and the related amount cannot be reliably estimated.

② Hyundai Samsung Joint Venture (HSJV), one of the subcontractors of the Company, filed an arbitration against the Company at the London Court of International Arbitration (LCIA) in 2016 due to disagreements in UAE nuclear power plant construction project, but the Company has not recognized any losses because the probability of economic benefit outflow is remote and the related amount cannot be reasonably estimated.

③ Hyundai E&C, GS Engineering & Construction Corp., and Hansol SeenTec Co., Ltd. filed on arbitration against the Company to the Korea Commercial Arbitration Board in relation to the request for additional construction costs but the Company has not recognized any provision because the probability of economic benefit outflow is remote and the related amount cannot be reliably estimated.

④ Halla Corporation filed on arbitration against the Company to the Korea Commercial Arbitration Board in relation to the request for additional construction costs but the Company has not recognized any losses because the probability of economic benefit outflow is remote and the related amount cannot be reasonably estimated.

(2) Guarantees of borrowings provided to other companies as of December 31, 2015 and 2016 are as follows:

① In order to secure its status as a shareholder of Navanakorn Electric Co., Ltd., the Company has signed a fund supplement contract. According to the contract, in case Navanakorn Electric Co., Ltd. does not have sufficient funds for its operation or repayment of borrowings, the Company bears a payment obligation in proportion to its ownership.

② The Company has outstanding borrowings with a limit of USD 275,600 thousand from its creditors such as International Finance Corporation. Regarding the borrowing contract, the Company has guaranteed capital contribution of USD 69,808 thousand and additional contribution up to USD 19,000 thousand for contingencies, if any. Moreover, for one of the electricity purchasers, Central Power Purchasing Agency Guarantee Ltd., the Company has provided performance guarantee up to USD 2,110 thousand, in case of construction delay or insufficient contract volume after commencement of the construction.

③ The Company has provided PT. Perusahaan Listrik Negara performance guarantee up to USD 917 thousand in proportion to its ownership in the electricity purchase contract with PT. Cirebon Energi Prasarana in relation to the second electric power generation business in Cirebon, Indonesia. Also, in relation to the business, the Company has provided Limited Notice To Proceed 2 (“LNTP 2”) Offshore performance payment guarantee amounting to USD 2,784 thousand to Hyundai Engineering Co. Ltd., Toshiba Corporation and MHPS, and LNTP 2 Onshore performance payment guarantee amounting to USD 380 thousand to Hyundai E&C and Toshiba Asia Pacific Indonesia (TAPI) based on the interest owned by the Company to progress the construction.

④ The Company has provided the Export-Import Bank of Korea and SMBC guarantee of mutual investment of USD 401 thousand, which is equivalent to the ownership interest of PT Mega Power Mandiri, in order to guarantee the expenses related to hydroelectric power business of PT Wampu Electric Power, an associate of the Company.

F-177

⑤ The Company has provided the Export-Import Bank of Korea, BNP Paribas and ING Bank guarantee of mutual investment of USD 2,684 thousand, which is equivalent to the ownership interest of PT BS Energy and PT Nusantara Hydro Alam, in order to guarantee the expenses related to hydroelectric power business of Tanggamus, Indonesia.

(3) Credit lines provided by financial institutions as of December 31, 2016 are as follows:

Commitments	Financial institutions	Currency	Limited amount		Exercised amount
		In millions of won and thousands of foreign currencies
Commitments on bank-overdraft	Nonghyup Bank and others	KRW		1,635,000		54,962
Commitments on bank-daylight overdraft	Nonghyup Bank	KRW		280,000		—
Limit amount available for CP	Shinhan Bank and others	KRW		700,000		—
Limit amount available for card	KEB Hana Bank and others	KRW		46,323		3,102
	Banco de Oro	PHP		5,000		5,000
Loan limit	Kookmin Bank and others	KRW		1,132,282		718,617
	BNP Paribas and others	USD		1,954,150		127,395
Certification of payment on L/C	Shinhan Bank (*)	KRW		19,721		19,721
	Woori Bank and others	USD		881,380		227,315
Certification of performance guarantee on contract	Kookmin Bank and others	EUR		21,291		21,291
	KEB Hana Bank	INR		236,443		185,077
	Seoul Guarantee Insurance and others	KRW		93,781		93,781
	Bank of Kathmandu	NPR		32,633		32,633
	KEB Hana Bank and others	USD		634,223		579,844
Certification of bidding	SMBC and others	USD		18,660		18,660
Advance payment bond, Warranty bond, Retention bond and others	Bank of Kathmandu	NPR		7,176		7,176
	KEB Hana Bank	SAR		95,756		91,097
	HSBC and others	USD		3,615,443		523,114
Others	Export-Import Bank of Korea	EUR		1,400		—
	KEB Hana Bank	INR		157,830		157,830
	KEB Hana Bank	JPY		756,669		756,669
	Nonghyup Bank and others	KRW		277,336		7,257
	KEB Hana Bank	SAR		2,240		—
	KEB Hana Bank and others	USD		1,111,636		561,443
Inclusive credit	Shinhan Bank	INR		47,489		47,489
	KEB Hana Bank	KRW		258,000		143,840
	HSBC and others	USD		302,510		2,510
	KEB Hana Bank	USD		30,000		7,730
		INR				256,582
		BRL				426
Trade finance	BNP Paribas and others	USD		750,000		—

F-178

(*) The Company was provided with a guarantee of ￦198 million from Daewoo Engineering & Construction Co. Ltd. for some of its commitments.

(4) As of December 31, 2016, the blank check and assets provided as collaterals or pledges to financial institutions by the Company are follows:

Guarantor	Guarantee	Type of guarantee	Currency	Amount		Description
	In millions of won and thousands of foreign currencies
Korea East-West Power Co., Ltd.	Korea Development Bank and others	Shareholdings of Gyeongju Wind Power Co., Ltd.	KRW		15,958	Collateral for borrowings
Korea Midland Power Co.,Ltd.	IBK and others	Shareholdings of Commerce and Industry Energy Co., Ltd.	KRW		13,605	Collateral for borrowings
Korea Southern Power Co., Ltd.	Shinhan Bank and others	Shareholdings of KOSPO Youngnam Power Co., Ltd.	KRW		40,000	Collateral for borrowings
Korea South-East Power Co., Ltd.	International Finance Corporation and others	Shareholdings of Mira Power Limited	KRW		38,206	Collateral for borrowings
Korea Hydro & Nuclear Power Co., Ltd.	Korea Development Bank and others	Shareholdings of Gyeonggi Green Energy Co., Ltd.	KRW		47,000	Collateral for borrowings
Gyeonggi Green Energy Co., Ltd.	Korea Development Bank and others	Factory estate and others	KRW		327,080	Collateral for borrowings(*)
Commerce and Industry Energy Co., Ltd.	IBK and others	Land, buildings, structures and machinery and others Cash and cash equivalents	KRW KRW		110,500 9,051	Collateral for borrowings
Gyeongju Wind Power Co., Ltd.	SK Securities Co., Ltd. and others	Property, plant and equipment and others	KRW		31,962	Collateral for borrowings
		Existing or expected trade receivables	KRW		3,431
		Cash and cash equivalents	KRW		716
KOSPO Youngnam Power Co., Ltd.	Shinhan Bank and others	Bank deposit and insurance claim	KRW		396,120	Collateral for borrowings
Qatrana Electric Power Company	The Islamic Development Bank and others	Finance Lease receivable and property, plant and equipment and others	JOD		188,580	Collateral for borrowings
KST Electric Power Company	Scotiabank Inverlat, S.A	Finance Lease receivable and others	USD		332,850	Collateral for borrowings

(*) The Company was provided with shares of Gyeonggi Green Energy Co., Ltd., one of its subsidiaries, from the investors as collateral related to long-term borrowings. Additionally, pledge for shares, pledge for transfer of rights of long-term borrowings, pledge for insurance claims and other pledges were established.

F-179

The Company has ￦1,197 million of project loans from Korea Resource Corporation as of December 31, 2016. The Company has provided a blank check as repayment guarantee.

(5) The Company temporarily suspended operations of the Gangneung hydroelectric generating plant, with a carrying amount of ￦94,886 million as of December 31, 2016, to improve the quality of water used in generating electricity. The expenses related to the suspension of operations of ￦459 million and depreciation on the utility plant of ￦6,639 million are recorded to other expenses for the year ended December 31, 2016.

(6) Due to the Korean government’s announcement of suspension of operation in the Gaeseong Industrial District, it is uncertain if the Company can exercise the property rights for the Company’s facility in the Gaeseong Industrial District as of December 31, 2016. The book value of facility is ￦19,820 million and the amount of trade receivables related to the companies residing in Gaeseong industrial complex is ￦3,172 million. The Company has entered into an insurance agreement covering up to ￦7,000 million with the Export-Import Bank of Korea related to Gaeseong industrial complex. The ultimate outcome of this event cannot be reasonably estimated.

51. Subsequent Events

(1) Subsequent to December 31, 2016, Korea Western Power Co., Ltd., a subsidiary of the Company, issuednon-guaranteed bonds and additional foreign currency short-term borrowings for funding facilities and operations as follows:

Company Name	Type	Issued date		Maturity		Maturity				Amounts
	In millions of won and thousands of foreign currencies
Korea Western Power Co., Ltd.	Short-term borrowings		2017.01.11		2017.07.10		1.62	%			USD 13,618
	Corporate bonds#33-1		2017.02.22		2022.02.22		2.04	%	￦		70,000
	Corporate bonds#33-2		2017.02.22		2027.02.22		2.34	%			130,000

(2) On January 19, 2017, Marubeni Korea Corporation filed on arbitration against the Company to the Korean Commercial Arbitration Board in relation to the refund of ￦4,050 million paid by Marubeni Korea Corporation to the Company as a penalty payment for the delayed delivery of Pyeongtaek 2 compound main equipment. The Company was notified on February 14, 2017 and is planning to appoint an arbitrator to proceed with arbitration. The management of the Company anticipates that the result of the arbitration will not have a significant impact on the Company’s business or financial position.

(3) Ordinary wage lawsuit

As of December 31, 2016, a total of eight lawsuits filed at the Busan High Court and others against KHNP in relation to the ordinary wages were ongoing. Two of these lawsuits filed to the Seoul Central District Court were ruled on February 3, 2017 with a partial favor to the plaintiff. The Company believes the ruling did not have any significant impact on the provisions recorded at December 31, 2016.

(4) Result of Wolsong Unit 1 lawsuit

On February 7, 2017, regarding the lawsuit against NSSC by a group of plaintiffs as disclosed in note 2.(4).(ii), the Seoul Administrative Court ruled to annul the NSSC’s permission for life extension of the operational period of Wolsong Unit 1 nuclear power plant. On February 14, 2017, NSSC appealed against the first judgment. KHNP, a subsidiary of the Company, is continuing to operate Wolsong Unit 1 nuclear power plant based on the judgment of NSSC that the approval of NSSC is valid, and believes that Wolsong Unit 1 nuclear power plant will be operating until 2022. Meanwhile, the Joint Action for a Nuclear-free Society submitted a suspension of execution of permission to operate Wolsong Unit 1 nuclear power plant to the Seoul Administrative Court. On February 14, 2017, KHNP participated in the appeal against a suspension of execution of permission to operate Wolsong Unit 1 nuclear power plant as a third party and a stakeholder.

F-180

INDEX OF EXHIBITS

1.1	Articles of Incorporation, as last amended on November 11, 2016 (in English)
2.1	Form of Deposit Agreement*
8.1	List of Subsidiaries
12.1	Certifications of our Chief Executive Officer required by Rule13a-14(a) of the Exchange Act (Certifications under Section 302 of the Sarbanes-Oxley Act of 2002)
12.2	Certifications of our Chief Financial Officer required by Rule13a-14(a) of the Exchange Act (Certifications under Section 302 of the Sarbanes-Oxley Act of 2002)
13.1	Certifications of our Chief Executive Officer required by Rule13a-14(b) and Section 1350 of Chapter 63 of the United States Code (18 U.S.C. 1350) (Certifications under Section 906 of the Sarbanes-Oxley Act of 2002)
13.2	Certifications of our Chief Financial Officer required by Rule13a-14(b) and Section 1350 of Chapter 63 of the United States Code (18 U.S.C. 1350) (Certifications under Section 906 of the Sarbanes-Oxley Act of 2002)
15.1	The Korea Electric Power Corporation Act, as amended on May 21, 2014 (in English)**
15.2	Enforcement Decree of the Korea Electric Power Corporation Act, as amended on August 31, 2016 (in English)
15.3	The Act on the Management of Public Institutions, as amended on March 22, 2016 (in English)
15.4	Enforcement Decree of the Act on the Management of Public Institutions, as amended on September 22, 2016 (in English)

* Incorporated by reference to the Registrant’s Registration Statement on FormF-6 with respect to the ADSs, registered under RegistrationNo. 333-196703.

** Incorporated by reference to the Registrant’s annual report on Form20-F (No.001-13372) previously filed on April 30, 2015.

E-1