Companhia Paranaense de Energia - COPEL (ELP) 20-F 19 Apr 21 2020 FY Annual report (foreign) Financial data

Cover

Cover	12 Months Ended
	Dec. 31, 2020shares
Cover [Abstract]
Entity Registrant Name	ENERGY CO OF PARANA
Entity Central Index Key	0001041792
Document Type	20-F
Document Period End Date	Dec. 31, 2020
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Emerging Growth Company	false
Entity Shell Company	false
Document Transition Report	false
Document Shell Company Report	false
Document Annual Report	true
Entity Interactive Data Current	No
Entity Incorporation, State or Country Code	D5
Document Accounting Standard	International Financial Reporting Standards
Entity Common Stock, Shares Outstanding	1,450,310,800
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2020
Auditor Attestation Flag	true

Consolidated Statements of Fina

Consolidated Statements of Financial Position - BRL (R$) R$ in Thousands	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
CURRENT ASSETS
Cash and cash equivalents	R$ 3222768	R$ 2941727
Bonds and securities	1,465	3,112
Collaterals and escrow accounts	197
Trade accounts receivable	3,768,242	3,120,168
Dividends receivable	67,066
CRC transferred to the Parana State Government	287,789
Sectorial financial assets	173,465	355,570
Accounts receivable - concessions	4,515
Contract assets	285,682
Other current receivables	514,185	426,865
Inventories	162,791
Income tax and social contribution receivable	86,410
Other current recoverable taxes	1,565,323	205,060
Prepaid expenses	36,987	33,563
Before assets held for sale	10,176,885
Assets held for sale	1,230,546
TOTAL CURRENT ASSETS	11,407,431
Long Term Assets
Bonds and securities	299,065	278,969
Other temporary investments	22,385
Collaterals and escrow accounts	133,521
Trade accounts receivable	51,438	62,399
CRC transferred to the Parana State Government	1,104,835
Judicial deposits	486,746	504,190
Sectorial financial assets	173,465	118,419
Accounts receivable - concessions	1,897,825
Contract assets	5,207,115
Other noncurrent receivables	845,460	661,759
Income tax and social contribution receivable	137,778
Deferred income tax and social contribution	1,191,104	1,011,866	R$ 1007061
Other noncurrent recoverable taxes	4,539,498
Prepaid expenses	44	132
Total long term asset	16,090,279
Investments	2,729,517
Property, plant and equipment	9,495,460	10,592,103
Intangible assets	6,929,456	6,332,611
Right-of-use asset	132,521
Total non current asset	35,377,233
TOTAL ASSETS	46,784,664
CURRENT LIABILITIES
Payroll, social charges and accruals	684,046	337,044
Accounts payable to suppliers	2,291,307	1,685,280
Income tax and social contribution payable	681,831
Other taxes due	490,608	501,068
Loans and financing	717,677	255,521
Debentures	1,881,411
Dividend payable	991,887
Post-employment benefits	69,231
Sectorial charges payable	33,712	28,508
Research and development and Energy efficiency	380,186	375,395
Accounts payable related to concession	88,951	73,032
Sectorial financial liabilities	188,709
Lease liability	41,193
Other accounts payable	235,400	149,407
PIS and Cofins to be refunded to consumers	121,838
Before liabilities associated with assets held for sale	8,897,987
Liabilities associated with assets held for sale	756,405
TOTAL CURRENT LIABILITIES	9,654,392
NONCURRENT LIABILITIES
Accounts payable to suppliers	145,145	187,913
Deferred income tax and social contribution	484,338	293,666	157,420
Other taxes due	622,483	662,114
Loans and financing	2,470,854	2,886,862
Debentures	4,876,070
Post-employment benefits	1,424,383	1,128,932
Research and development and Energy efficiency	284,825	282,776
Accounts payable related to concession	642,913
Sectorial financial liabilities		102,284
Lease liability	97,168
Other accounts payable	469,886	349,462
PIS and Cofins to be refunded to consumers	3,805,985
Provisions for legal claims	1,555,704
TOTAL NONCURRENT LIABILITIES	16,879,754
Attributable to controlling shareholders
Capital	10,800,000	10,800,000
Equity valuation adjustments	353,349	591,927	785,610
Legal reserve	1,209,458
Profit retention reserve	6,088,855
Additional dividends proposed from the non-capitalized earning reserve	1,507,449
TOTAL EQUITY	19,959,111
EQUITY - Attributable to non-controlling interests
EQUITY - Attributable to controlling shareholders	291,407	345,798	303,289
TOTAL EQUITY AFTER NON-CONTROLLING INTERESTS	20,250,518	17,598,212	16,336,214
TOTAL LIABILITIES & EQUITY	R$ 46784664
Restated [Member]
CURRENT ASSETS
Cash and cash equivalents		2,941,727	1,948,409
Bonds and securities		3,112	124,862
Collaterals and escrow accounts		147	203
Trade accounts receivable		3,120,168	2,944,091
Dividends receivable		70,092	76,672
CRC transferred to the Parana State Government		219,236	190,876
Sectorial financial assets		355,570	421,184
Accounts receivable - concessions		4,545	4,180
Contract assets		161,740	134,016
Other current receivables		426,865	363,250
Inventories		130,442	116,285
Income tax and social contribution receivable		236,929	152,157
Other current recoverable taxes		205,060	160,842
Prepaid expenses		33,563	40,819
Before assets held for sale		7,909,196	6,677,846
Assets held for sale
TOTAL CURRENT ASSETS		7,909,196	6,677,846
Long Term Assets
Bonds and securities		278,969	219,434
Other temporary investments		27,734	19,511
Collaterals and escrow accounts		98,433	89,555
Trade accounts receivable		62,399	162,915
CRC transferred to the Parana State Government		1,131,449	1,254,166
Judicial deposits		504,190	528,290
Sectorial financial assets		118,419	257,635
Accounts receivable - concessions		1,873,824	1,792,685
Contract assets		4,628,913	4,053,040
Other noncurrent receivables		661,759	228,894
Income tax and social contribution receivable		142,532	166,384
Deferred income tax and social contribution		1,011,866	1,007,061
Other noncurrent recoverable taxes		322,011	231,400
Prepaid expenses		132	3,290
Total long term asset		10,862,630	10,014,260
Investments		2,523,179	2,368,234
Property, plant and equipment		10,592,103	10,840,663
Intangible assets		6,332,611	6,029,097
Right-of-use asset		92,831	118,022
Total non current asset		30,403,354	29,370,276
TOTAL ASSETS		38,312,550	36,048,122
CURRENT LIABILITIES
Payroll, social charges and accruals		337,044	284,179
Accounts payable to suppliers		1,685,280	1,419,243
Income tax and social contribution payable		60,132	197,949
Other taxes due		501,068	451,433
Loans and financing		255,521	1,113,047
Debentures		1,164,301	2,184,881
Dividend payable		616,356	375,675
Post-employment benefits		66,004	58,478
Sectorial charges payable		28,508	79,872
Research and development and Energy efficiency		375,395	270,429
Accounts payable related to concession		73,032	67,858
Sectorial financial liabilities
Lease liability		33,573	27,956
Other accounts payable		149,407	192,070
PIS and Cofins to be refunded to consumers
Before liabilities associated with assets held for sale		5,345,621	6,723,070
Liabilities associated with assets held for sale
TOTAL CURRENT LIABILITIES		5,345,621	6,723,070
NONCURRENT LIABILITIES
Accounts payable to suppliers		187,913	49,956
Deferred income tax and social contribution		293,666	157,420
Other taxes due		662,114	796,732
Loans and financing		2,886,862	2,934,260
Debentures		7,265,409	5,333,250
Post-employment benefits		1,128,932	910,285
Research and development and Energy efficiency		282,776	322,306
Accounts payable related to concession		539,555	516,305
Sectorial financial liabilities		102,284	96,531
Lease liability		63,031	90,066
Other accounts payable		349,462	116,954
PIS and Cofins to be refunded to consumers
Provisions for legal claims		1,606,713	1,664,773
TOTAL NONCURRENT LIABILITIES		15,368,717	12,988,838
Attributable to controlling shareholders
Capital		10,800,000	7,910,000
Equity valuation adjustments		591,927	785,610
Legal reserve		1,014,248	914,751
Profit retention reserve		4,846,239	6,422,564
Additional dividends proposed from the non-capitalized earning reserve
TOTAL EQUITY		17,252,414	16,032,925
EQUITY - Attributable to non-controlling interests
EQUITY - Attributable to controlling shareholders		345,798	303,289
TOTAL EQUITY AFTER NON-CONTROLLING INTERESTS		17,598,212	16,336,214
TOTAL LIABILITIES & EQUITY		R$ 38312550	R$ 36048122

Consolidated Statements of Inco

Consolidated Statements of Income - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disclosure of classes of share capital [line items]
NET OPERATING REVENUE	R$ 18633249
OPERATING COSTS	(13,347,822)
GROSS PROFIT	5,285,427
Operational expenses / income
Selling expenses	(159,825)
General and administrative expenses	(809,408)
Other operational income (expenses)	(256,475)
Equity in earnings of investees	193,547
Total operational expenses / income	(1,032,161)
PROFIT BEFORE FINANCIAL RESULTS AND TAXES	4,253,266
Financial results
Financial income	1,839,668
Financial expenses	(973,397)
Total financial results	866,271
OPERATING PROFIT	5,119,537
INCOME TAX AND SOCIAL CONTRIBUTION
Current	(1,260,469)
Deferred	(24,896)
TOTAL INCOME TAX AND SOCIAL CONTRIBUTION	(1,285,365)
NET INCOME FROM CONTINUING OPERATIONS	3,834,172
DISCONTINUED OPERATIONS
Net income (loss) from discontinued operations	75,578
NET INCOME	3,909,750
Attributed to shareholders of the parent company arising from continuing operations	3,823,981
Attributed to shareholders of the parent company due to discontinued operations	80,221
Attributed to non-controlling shareholders resulting from continuing operations	R$ 5548
Common shares [member]
BASIC AND DILUTED EARNING PER SHARE ATTRIBUTED TO CONTROLLING SHAREHOLDERS - CONTINUING OPERATIONS - Expressed in Brazilian Reais
Shares	R$ 1.33430
BASIC AND DILUTED EARNING PER SHARE ATTRIBUTED TO CONTROLLING SHAREHOLDERS - Expressed in Brazilian Reais
Shares	1.36229
Class "A" preferred [member]
BASIC AND DILUTED EARNING PER SHARE ATTRIBUTED TO CONTROLLING SHAREHOLDERS - CONTINUING OPERATIONS - Expressed in Brazilian Reais
Shares	1.76982
BASIC AND DILUTED EARNING PER SHARE ATTRIBUTED TO CONTROLLING SHAREHOLDERS - Expressed in Brazilian Reais
Shares	1.80062
Class "B" Preferred Stock [member]
BASIC AND DILUTED EARNING PER SHARE ATTRIBUTED TO CONTROLLING SHAREHOLDERS - CONTINUING OPERATIONS - Expressed in Brazilian Reais
Shares	1.46773
BASIC AND DILUTED EARNING PER SHARE ATTRIBUTED TO CONTROLLING SHAREHOLDERS - Expressed in Brazilian Reais
Shares	R$ 1.49852
Restated [Member]
Disclosure of classes of share capital [line items]
NET OPERATING REVENUE		R$ 15869245	R$ 14550464
OPERATING COSTS		(11,464,148)	(11,372,908)
GROSS PROFIT		4,405,097	3,177,556
Operational expenses / income
Selling expenses		(175,772)	(105,414)
General and administrative expenses		(711,289)	(706,844)
Other operational income (expenses)		(322,506)	(250,004)
Equity in earnings of investees		106,757	135,888
Total operational expenses / income		(1,102,810)	(926,374)
PROFIT BEFORE FINANCIAL RESULTS AND TAXES		3,302,287	2,251,182
Financial results
Financial income		729,506	797,107
Financial expenses		(1,184,870)	(1,210,252)
Total financial results		(455,364)	(413,145)
OPERATING PROFIT		2,846,923	1,838,037
INCOME TAX AND SOCIAL CONTRIBUTION
Current		(416,687)	(522,550)
Deferred		(258,974)	51,384
TOTAL INCOME TAX AND SOCIAL CONTRIBUTION		(675,661)	(471,166)
NET INCOME FROM CONTINUING OPERATIONS		2,171,262	1,366,871
DISCONTINUED OPERATIONS
Net income (loss) from discontinued operations		(108,393)	77,133
NET INCOME		2,062,869	1,444,004
Attributed to shareholders of the parent company arising from continuing operations		2,078,267	1,308,901
Attributed to shareholders of the parent company due to discontinued operations		(88,321)	98,162
Attributed to non-controlling shareholders resulting from continuing operations		R$ 72923	R$ 36941
Restated [Member] | Common shares [member]
BASIC AND DILUTED EARNING PER SHARE ATTRIBUTED TO CONTROLLING SHAREHOLDERS - CONTINUING OPERATIONS - Expressed in Brazilian Reais
Shares		R$ 0.72523	R$ 0.45683
BASIC AND DILUTED EARNING PER SHARE ATTRIBUTED TO CONTROLLING SHAREHOLDERS - Expressed in Brazilian Reais
Shares		0.69440	0.49109
Restated [Member] | Class "A" preferred [member]
BASIC AND DILUTED EARNING PER SHARE ATTRIBUTED TO CONTROLLING SHAREHOLDERS - CONTINUING OPERATIONS - Expressed in Brazilian Reais
Shares		0.89086	0.50251
BASIC AND DILUTED EARNING PER SHARE ATTRIBUTED TO CONTROLLING SHAREHOLDERS - Expressed in Brazilian Reais
Shares		0.85790	0.54020
Restated [Member] | Class "B" Preferred Stock [member]
BASIC AND DILUTED EARNING PER SHARE ATTRIBUTED TO CONTROLLING SHAREHOLDERS - CONTINUING OPERATIONS - Expressed in Brazilian Reais
Shares		0.79778	0.50251
BASIC AND DILUTED EARNING PER SHARE ATTRIBUTED TO CONTROLLING SHAREHOLDERS - Expressed in Brazilian Reais
Shares		R$ 0.76388	R$ 0.54020

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
NET INCOME	R$ 3909750
Gain (losses) on actuarial liabilities
Post employment benefits	(271,345)
Taxes on other comprehensive income	92,190
Total other comprehensive income, net of taxes	(179,155)
TOTAL COMPREHENSIVE INCOME	3,730,595	R$ 1939685	R$ 1405644
Attributable to controlling shareholders - continuing operations	3,645,033
Attributable to controlling shareholders - discontinued operations	80,221
Attributed to non-controlling shareholders - continuing operations	R$ 5341
Restated [Member]
NET INCOME		2,062,869	1,444,004
Gain (losses) on actuarial liabilities
Post employment benefits		(186,628)	(58,354)
Taxes on other comprehensive income		63,444	19,994
Total other comprehensive income, net of taxes		(123,184)	(38,360)
TOTAL COMPREHENSIVE INCOME		1,939,685	1,405,644
Attributable to controlling shareholders - continuing operations		1,950,810	1,270,387
Attributable to controlling shareholders - discontinued operations		(88,321)	98,162
Attributed to non-controlling shareholders - continuing operations		R$ 77196	R$ 37095

Consolidated Statements of Chan

Consolidated Statements of Changes in Equity - BRL (R$) R$ in Thousands	Capital [member]	Deemed cost [member]	Other comprehensive income [member]	Legal reserves [member]	Profit retention reserve [member]	Additional dividends proposed from the non-capitalized earning reserve [member]	Accumulated profit [member]	Shareholders equity [member]	Attributable to non - controlling interests [member]	Total
Balance, beginning at Dec. 31, 2017	R$ 7910000	R$ 873306	R$ 17904	R$ 844398	R$ 5397310			R$ 15042918	R$ 302661	R$ 15345579
Changes in equity
Net income (loss)							1,407,063	1,407,063	36,941
Other comprehensive income: actuarial gain (losses), net of taxes			(38,514)					(38,514)	154	(38,360)
Realization - gain on financial assets, net of taxes										0
Total comprehensive income			(38,514)				1,407,063	1,368,549	37,095	1,405,644
Realization - deemed cost, net of taxes		(67,086)					67,086
Allocation proposed to GSM: Legal reserve				70,353			(70,353)
Allocation proposed to GSM: Interest on own capital							(280,000)	(280,000)		(280,000)
Allocation proposed to GSM: Dividends							(98,542)	(98,542)	(36,467)	(135,009)
Allocation proposed to GSM: Profit retention reserve					1,025,254		(1,025,254)
Balance, ending at Dec. 31, 2018	7,910,000	806,220	(20,610)	914,751	6,422,564			16,032,925	303,289	16,336,214
Changes in equity
Net income (loss)							1,989,946	1,989,946	72,923
Other comprehensive income: actuarial gain (losses), net of taxes			(122,583)					(122,583)	(601)	(123,184)
Other comprehensive income: Gain (loss) with interest variation in Subsidiary			(4,874)					(4,874)	4,874
Realization - gain on financial assets, net of taxes										0
Total comprehensive income			(127,457)				1,989,946	1,862,489	77,196	1,939,685
Realization - deemed cost, net of taxes		(66,226)					66,226
Deliberation of additional dividends proposed									(3,335)	(3,335)
Dividends									(7,838)	(7,838)
Capital increase	2,890,000				(2,890,000)
Allocation proposed to GSM: Legal reserve				99,497			(99,497)
Allocation proposed to GSM: Interest on own capital							(643,000)	(643,000)		(643,000)
Allocation proposed to GSM: Dividends									(23,514)	(23,514)
Allocation proposed to GSM: Profit retention reserve					1,313,675		(1,313,675)
Balance, ending at Dec. 31, 2019	10,800,000	739,994	(148,067)	1,014,248	4,846,239			17,252,414	345,798	17,598,212
Changes in equity
Net income (loss)							3,904,202	3,904,202	5,548	3,909,750
Other comprehensive income: actuarial gain (losses), net of taxes			(178,948)					(178,948)	(207)	(179,155)
Total comprehensive income			(178,948)				3,904,202	3,725,254	5,341	3,730,595
Realization - deemed cost, net of taxes		(59,630)					59,630
Deliberation of additional dividends proposed									(51,799)	(51,799)
Capital increase
Allocation proposed to GSM: Legal reserve				195,210			(195,210)
Allocation proposed to GSM: Interest on own capital							(807,500)	(807,500)		(807,500)
Allocation proposed to GSM: Additional dividends proposed from the non-capitalized earning reserve					(1,507,449)	R$ 1507449
Allocation proposed to GSM: Dividends							(211,057)	(211,057)	(7,933)	(218,990)
Allocation proposed to GSM: Profit retention reserve					2,750,065		R$ 2750065
Balance, ending at Dec. 31, 2020	R$ 10800000	R$ 680364	R$ 327015	R$ 1209458	R$ 6088855	R$ 1507449		R$ 19959111	R$ 291407	R$ 20250518

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
CASH FLOWS FROM OPERATIONAL ACTIVITIES
Net income from continuing operations	R$ 3834172
Net income (loss) from discontinued operations	75,578
NET INCOME	3,909,750
Adjustments to reconcile net income for the period with cash
Unrealized monetary and cambial variation and debt charges - net	456,456
Interest - bonus from the grant of concession agreements under the quota system	(94,307)
Remuneration of transmission concession contracts	(777,670)
Recovery of PIS / Pasep and Cofins on ICMS	(1,755,112)
Income tax and social contribution	1,260,469
Deferred income tax and social contribution	24,896
Equity in earnings of investees	(193,547)
Appropriation of acturial calculation of post-employment benefits	94,349
Appropriation of pension and healthcare contributions	130,129
Creation for research and development and energy efficiency programs	148,019
Recognition of fair value of assets related to concession compensation	(57,341)
Sectorial financial assets and liabilities result	(746,052)
Depreciation and amortization	1,009,912
Net operating estimated losses, provisions and reversals	237,294
Result of business combination carried out with asset swap - gain
Realization of added value in business combinations	(722)
Result of disposal of investment
Fair value in energy purchase and sale operations in the active market	(137,463)
Derivatives fair value	(24,511)
Loss on disposal of accounts receivable related to concession	144
Loss on disposal of contract assets	35,590
Loss on disposal of property, plant and equipment	5,195
Loss on disposal of intangible assets	52,811
Result of write-offs of use rights of assets and liabilities of leases - net	(314)
Total of adjustments to reconcile net income with cash generated from operating activities	3,577,975
Decrease (increase) in assets
Trade accounts receivable	(175,049)
Dividends and interest on own capital received	53,952
CRC transferred to the Government of the State of Parana	300,025
Judicial deposits	16,729
Sectorial financial assets	979,642
Other receivables	(13,898)
Inventories	(40,035)
Income tax and social contribution	123,582
Other current taxes recoverable	74,125
Prepaid expenses	(3,473)
Related parties
Total decrease (increase) in assets	1,315,600
Increase (decrease) in liabilities
Payroll, social charges and accruals	347,002
Related parties
Suppliers	292,108
Other taxes	(79,053)
Post-employment benefits	(197,143)
Sectorial charges due	5,204
Research and development and energy efficiency	(153,729)
Payable related to the concession	(74,931)
Other accounts payable	117,610
Provisions for legal claims	(167,316)
Total increase (decrease) in liabilities	89,752
CASH GENERATED FROM OPERATING ACTIVITIES	4,983,327
Income tax and social contribution paid	(636,420)
Loans and financing - interest due and paid	(183,391)
Debentures - interest due and paid	(386,281)
Charges for lease liabilities paid	(6,679)
NET CASH GENERATED BY OPERATING ACTIVITIES FROM CONTINUING OPERATIONS	3,770,556
NET CASH GENERATED BY OPERATING ACTIVITIES FROM DISCONTINUED OPERATIONS	170,288
NET CASH GENERATED FROM OPERATING ACTIVITIES	3,940,844
CASH FLOWS FROM INVESTMENT ACTIVITIES
Financial investments	(48,238)
Additions to contract assets	(1,349,688)
Customers contributions - contract assets	112,689
Additions in investments	(72,439)
Capital reduction of investees	228
Additions to property, plant and equipment	(226,325)
Additions to intangible assets	(10,225)
NET CASH USED BY INVESTMENT ACTIVITIES FROM CONTINUING OPERATIONS	(1,593,998)
NET CASH USED BY INVESTMENT ACTIVITIES FROM DISCONTINUED OPERATIONS	(73,573)
NET CASH (USED IN) GENERATED FROM INVESTING ACTIVITIES	(1,667,571)
CASH FLOWS FROM FINANCING ACTIVITIES
Loans and financing obtained from third parties	263,000
Payments of principal - loans and financing	(248,863)
Payments of principal - debentures	(1,036,490)
Amortization of principal of lease liabilities	(46,365)
Dividends and interest on own capital paid	(626,357)
NET CASH (USED) GENERATED BY FINANCING ACTIVITIES FROM CONTINUING OPERATIONS	(1,695,075)
NET CASH (USED) GENERATED BY FINANCING ACTIVITIES FROM DISCONTINUED OPERATIONS	(20,038)
NET CASH GENERATED FROM FINANCING ACTIVITIES	(1,715,113)
TOTAL EFFECTS ON CASH AND CASH EQUIVALENTS	558,160
Cash and cash equivalents at the beginning of the period	2,941,727
Cash and cash equivalents at the end of the period	3,222,768
Cash and cash equivalents from discontinued operations	277,119
CHANGE IN CASH AND CASH EQUIVALENTS	R$ 558160
Restated [Member]
CASH FLOWS FROM OPERATIONAL ACTIVITIES
Net income from continuing operations		R$ 2171262	R$ 1366871
Net income (loss) from discontinued operations		(108,393)	77,133
NET INCOME		2,062,869	1,444,004
Adjustments to reconcile net income for the period with cash
Unrealized monetary and cambial variation and debt charges - net		760,727	723,951
Interest - bonus from the grant of concession agreements under the quota system		(91,404)	(85,986)
Remuneration of transmission concession contracts		(501,566)	(351,544)
Recovery of PIS / Pasep and Cofins on ICMS		(105,184)
Income tax and social contribution		416,687	522,550
Deferred income tax and social contribution		258,972	(51,657)
Equity in earnings of investees		(106,757)	(135,888)
Appropriation of acturial calculation of post-employment benefits		99,578	97,900
Appropriation of pension and healthcare contributions		138,974	151,215
Creation for research and development and energy efficiency programs		130,678	125,369
Recognition of fair value of assets related to concession compensation		(36,646)	(47,499)
Sectorial financial assets and liabilities result		(25,057)	(985,344)
Depreciation and amortization		950,726	696,933
Net operating estimated losses, provisions and reversals		260,051	281,104
Result of business combination carried out with asset swap - gain		1,414	3,769
Realization of added value in business combinations		1,536
Result of disposal of investment			(8,174)
Fair value in energy purchase and sale operations in the active market		(204,876)	(3,786)
Derivatives fair value
Loss on disposal of accounts receivable related to concession		146	1,536
Loss on disposal of contract assets		7,949	9,762
Loss on disposal of property, plant and equipment		15,287	22,293
Loss on disposal of intangible assets		26,368	28,421
Result of write-offs of use rights of assets and liabilities of leases - net		(31)
Total of adjustments to reconcile net income with cash generated from operating activities		4,060,441	2,438,929
Decrease (increase) in assets
Trade accounts receivable		243,617	193,466
Dividends and interest on own capital received		36,732	50,858
CRC transferred to the Government of the State of Parana		278,586	260,117
Judicial deposits		45,482	89,527
Sectorial financial assets		277,265	482,974
Other receivables		(59,793)	21,556
Inventories		(13,662)	(5,281)
Income tax and social contribution		(37,226)	360,714
Other current taxes recoverable		(20,350)	(67,902)
Prepaid expenses		10,450	8,560
Related parties		(602)
Total decrease (increase) in assets		760,499	1,394,589
Increase (decrease) in liabilities
Payroll, social charges and accruals		52,792	(29,845)
Related parties			(59)
Suppliers		263,346	(575,722)
Other taxes		(132,423)	75,351
Post-employment benefits		(199,007)	(204,809)
Sectorial charges due		(51,442)	(70,507)
Research and development and energy efficiency		(91,306)	(91,015)
Payable related to the concession		(70,569)	(64,365)
Other accounts payable		(51,095)	103,198
Provisions for legal claims		(366,066)	(143,864)
Total increase (decrease) in liabilities		(645,770)	(1,001,637)
CASH GENERATED FROM OPERATING ACTIVITIES		4,175,170	2,831,881
Income tax and social contribution paid		(560,692)	(411,037)
Loans and financing - interest due and paid		(325,677)	(288,577)
Debentures - interest due and paid		(664,247)	(475,547)
Charges for lease liabilities paid		(8,356)
NET CASH GENERATED BY OPERATING ACTIVITIES FROM CONTINUING OPERATIONS		2,616,198	1,656,720
NET CASH GENERATED BY OPERATING ACTIVITIES FROM DISCONTINUED OPERATIONS		328,808	114,251
NET CASH GENERATED FROM OPERATING ACTIVITIES		2,945,006	1,770,971
CASH FLOWS FROM INVESTMENT ACTIVITIES
Financial investments		45,170	(75,804)
Receipt of loans and financing granted to related parties			117,645
Additions to contract assets		(1,042,093)	(792,835)
Customers contributions - contract assets		104,067	106,764
Acquisitions of subsidiaries - effect on cash		(123,794)	7,998
Additions in investments		(133,874)	(51,557)
Capital reduction of investees		35,035	35,280
Additions to property, plant and equipment		(367,883)	(1,208,953)
Customers contributions - property, plant and equipment			12
Additions to intangible assets		(4,711)	(7,161)
NET CASH USED BY INVESTMENT ACTIVITIES FROM CONTINUING OPERATIONS		(1,488,083)	(1,868,611)
NET CASH USED BY INVESTMENT ACTIVITIES FROM DISCONTINUED OPERATIONS		(175,568)	(280,542)
NET CASH (USED IN) GENERATED FROM INVESTING ACTIVITIES		(1,663,651)	(2,149,153)
CASH FLOWS FROM FINANCING ACTIVITIES
Loans and financing obtained from third parties		796,296	1,314,766
Issue of Debentures		2,755,028	2,890,283
Payments of principal - loans and financing		(1,655,065)	(1,120,340)
Payments of principal - debentures		(1,977,125)	(1,491,667)
Amortization of principal of lease liabilities		(27,490)
Dividends and interest on own capital paid		(380,421)	(300,722)
NET CASH (USED) GENERATED BY FINANCING ACTIVITIES FROM CONTINUING OPERATIONS		(488,777)	1,292,320
NET CASH (USED) GENERATED BY FINANCING ACTIVITIES FROM DISCONTINUED OPERATIONS		200,740	(5,804)
NET CASH GENERATED FROM FINANCING ACTIVITIES		(288,037)	1,286,516
TOTAL EFFECTS ON CASH AND CASH EQUIVALENTS		993,318	908,334
Cash and cash equivalents at the beginning of the period		1,948,409	1,040,075
Cash and cash equivalents at the end of the period		2,515,179	1,929,201
Cash and cash equivalents from discontinued operations		426,548	19,208
CHANGE IN CASH AND CASH EQUIVALENTS		R$ 993318	R$ 908334

1 Operations

1 Operations	12 Months Ended
	Dec. 31, 2020
Operations [Abstract]
Operations	1 Operations Companhia Paranaense de Energia (Copel or Company), with its head office located at Rua Coronel Dulcídio, 800, Curitiba - State of Paraná, is a publicly-held mixed capital company controlled by the State of Paraná and its shares are traded at Corporate Governance Level 1 of the Special Listing Segments of B3 S.A. - Brasil, Bolsa Balcão Stock Exchange and also on the New York Stock Exchange (NYSE) and on the Madrid Stock Exchange, in the Latin American segment (Latibex). The core activities of Copel, which are regulated by the Brazilian Electricity Regulatory Agency (ANEEL), linked to the Brazilian Ministry of Mines and Energy (MME), are to carry out research, study, planning, and asset building activities related to the generation, transformation, distribution and trading of energy in any of its forms, primarily electricity. Furthermore, Copel participates in consortiums and in private sector and mixed-capital companies for the purpose of engaging in activities, primarily in the fields of energy, telecommunications and natural gas. a) Coronavirus pandemic (Covid-19) and its impacts Coronavirus is a family of viruses was discovered in 2019 after cases registered in China and causes the disease called Covid-19, which has clinical symptoms ranging from asymptomatic infections to severe respiratory conditions. On February 26, 2020 the first case of infection was identified in Brazil, in the city of São Paulo and on March 11, 2020, who attributed the status of pandemic to coronavirus, in view of the spread of contamination throughout the world. In Brazil, federal, state and municipal governments have implemented several measures to deal with the public health emergency. In the state of Paraná, measures included social isolation and restrictions on the operation of non-essential activities as means to slow the spread of the disease. These measures were relaxed from September 2020 with the reduction of social isolation and the increase in economic activity; however, in mid-February and early March 2021 the stricter restrictions returned due to the worsening of the pandemic. As of March 2020, Copel's Management issued rules that aim to ensure compliance with the measures to contain the spread of the disease in the Company and minimize its impacts and potential impacts on the administrative, operations and economic-financial areas. Accordingly, Copel established a Contingency Commission, whose objective is to monitor and mitigate the impacts and consequences in the main activities of the Company, The 4 pillars defined are: (i) safety of personnel, (ii) continuity of essential activities, (iii) monitoring of the guidelines and requirements of regulatory bodies, and (iv) preservation of adequate financial conditions to withstand the crisis. Among the main initiatives implemented by the Company, there are actions to prevent and mitigate the effects of contagion in the workplace, such as: adoption of home office in areas where it is possible to adopt this format, travel restrictions, meetings by video conference, daily monitoring of the health and well-being of employees and contingency protocols in order to fully maintain the operations of the electric power, telecommunications and piped gas infrastructure, preserving the health of its professionals, their safe access to locations, an environment that preserves distance between individuals, hygiene and access to personal protective equipment. Likewise, Copel has adopted several activities in favor of its customers, maintaining the reliability and availability of its plants, the transmission and distribution systems of electric power and gas and telecommunications, so that they can remain connected and take advantage of Company services in this critical moment of pandemic and social distancing. Copel and its employees go to great lengths to ensure that their customers and family members have healthy and safe in their homes, maintaining all the services that contribute to providing comfort and connectivity for everyone. Effects from coronavirus (Covid-19) on the financial statements The drop in growth and the downturn in certain business segments, resulting from the suspension of certain businesses and activities caused by the coronavirus outbreak, have been affecting performance of the Brazilian economy, with effects on Copel's operations, mainly due to the reduction in electric energy demand in the regulated market, which was affected more intensely in the industrial and commercial consumption classes, which registered a decrease of 12.6% and 11.8% in the year, respectively, in relation to the previous year. However, the residential class registered a growth of 5.5% in the year, mainly influenced by measures of social isolation. On April 8, 2020, valid until August 5, 2020, Provisional Measure 950 was enacted by the Federal Government, which provides for temporary emergency measures for the energy sector due to the declared state of public calamity, establishing an exemption in energy tariffs, funded by the energy sector charge called Energy Development Account - CDE, for low-income consumers with consumption of up to 220 kWh/month, for a period of three months, and providing funds through a credit operation aimed at providing financial relief to energy distributors. On the same date, Aneel published Normative Act 986, authorizing the Electric Energy Trading Chamber - CCEE during 2020, to pass on to the sector agents, with consumption characteristics, the surplus funds available in the reserve fund for future burden relief, with the objective of strengthening the sector's liquidity during the virus pandemic. On April 8, 2020 and May 13, 2020, the Company obtained access to funds amounting to R$ 84,881 and R$ 8,666, respectively, which were recorded as sector financial liabilities. On May 18, 2020, Decree 10,350 was enacted, which provided for the creation of the Covid Account, intended for the electric sector to deal with the state of public calamity recognized by Legislative Decree 6, of March 20, 2020, and which regulated the Provisional Measure 950 valid until August 5, 2020. On June 23, 2020, Aneel issued Resolution 885, which provides for the Covid Account, financial operations, the use of the CDE for these purposes and the corresponding procedures. These measures are intended to balance cash of energy distribution companies and prevent the effects from default and reduced energy consumption during the coronavirus pandemic from affecting the entire sector, as well as easing tariff pressure on consumers, in 2020, due to the windfall costs arisen in the context of the Covid-19 pandemic. Copel has filed the Statement of Acceptance of the Provisions of Decree 10,350/2020. The total amount requested was R$ 869,516, and on June 25, 2020, had already expressed its position about the advance of R$ 536,359 referring to the recognized CVA, which was part of its annual tariff adjustment. The total amount requested was fully received on July 31, 2020. It should be noted that the provisional measure did not reach energy contracts entered into in the free market. To reduce the impact on revenue from this market and to avoid future legal disputes, Copel renegociated with its customers, with difficulty in fulfilling contracts, proposing payments in installments and postponing maturity of energy bills. In relation to the captive distribution market, Copel has been posting decrease in revenue, mainly in the commercial and industrial classes, which reduced consumption by 11.8% and 12.6%, respectively, reflecting the fall in economic activities, mainly when stricter restrictions are implemented in an attempt to reduce the level of contagion among the population. On the other hand, there has been an increase in revenue in the residential class, due to the social distancing measures, and in the rural class, reflecting the good performance of agribusiness in the Paraná state. With regard to collection, the Company has been in contact with its main customers and has made the collection policy more flexible during the pandemic period, as such, there has been an increase in number of payments in installments. Due to the measures applied by Aneel in the context of Covid-19, the Company has not suspended energy supply to residential customers and to essential services and activities until July 31, 2020. In this respect, with the health crisis there has been an increase of R$ 35,800 in estimated expected credit losses recorded by Copel DIS no 1st semester de 2020, due to the increase in consumers’ default, coupled with the drop in collection and the stoppage of several commercial and industrial activities resulting from the social distancing measures, this reducing Copel DIS's financial and economic results. With the 3.1% drop in consumption of the captive energy market for the year, due to the pandemic scenario, the Company estimates over-contracting of 105.5% of electricity in 2020 at Copel DIS. However, as described in Note 35.2.9, the Company understands that this overcontracting will be considered involuntary. Copel has been monitoring energy load projections and has not seen any signs of significant retraction in the beginning of 2021, which may occur if restrictions have a long-term impact on non-essential industrial and commercial activities. Another point for attention are the possible impacts on the implementation schedule of energy generation and transmission projects, or even on the availability of existing assets resulting from local actions that prevent access to facilities or problems with suppliers in the sector, also affected by the downturn. Management, diligently, continues to monitor the deadlines for construction works in progress and has maintained continuous communication with the concession regulator regarding any delays that may occur until the normalization of commercial activities in the overall market. The Company's construction in progress to date have not had any significant delays. With the objective of mitigating the impacts and consequences on its main activities, Copel has been continuously monitoring its contracts, liquidity in the energy market and the short-term energy price, as well as the negotiations with the Regulatory Body of the Brazilian energy sector for the implementation of guidelines ensuring maintenance of economic and financial sustainability of the entire chain of energy generation, transmission, sale and distribution. In this scenario, for the purposes of preparing and disclosing the financial statements for the year ended December 31, 2020, the Company's management evaluated its estimates in order to identify the possible impacts of Covid-19 on the Company's business, as follows: a.1) Expected credit losses A potentially relevant risk in the emergence of Covid-19 is related to customer default. In this scenario, the Company maintains regular contact with its main customers, adding flexibility to the collection policy during the pandemic period and increasing the level of digitalization in the relationship with Copel. The Company's accounts receivable position as of December 30, 2020, as well as the estimates of expected credit losses reflect in a timely manner the best analysis by Management at this time on the quality and recoverability of this financial asset. Although the loss indicator has not significantly deteriorated, the Company may face pressure on this indicator if the pandemic lasts longer and stricter restrictions on social distancing are implemented as an attempt to reduce the level of transmission among the population. In 2020, Copel’s expected credit loss estimates were more impacted in the first half-year, mainly due to regulatory restrictions that prevented, until July 31, 2020, cuts in the supply of energy to defaulting customers, as well as the greater restriction in social isolation in that period. In the second half of 2020, the loss estimates were less impacted due to the easing of social isolation that led to a resumption of economic activity, the continuity of cuts in the supply of energy and the renegotiation with defaulting customers. On March 26, 2021, Aneel Resolution No. 928 was issued, which prevents the suspension of energy supply to low-income consumers and some other groups of consumers, with no material impact for the Company, given that these consumers are already covered by the State Law No. 20,187 / 2020, which also deals with the prohibition on cutting the power supply. Despite the worsening of the pandemic at the beginning of 2021, Copel resumed collection actions with defaulting consumers and created special conditions for payment of debts, giving conditions to consumers affected by the restrictions of social distance, necessary to prevent the spread of the virus, in keeping up with their obligations to the Company. a.2) Impairment of non-financial assets - impairment The assumptions for all non-financial assets were assessed individually and the conclusion is that the net carrying amount of the assets is recoverable. The assumptions in connection with the Company's material non-financial assets were assessed individually and Management concluded that it is necessary to adjust the amount of impairment for some assets, as shown in Note 17. Despite the hydrological scenario in southern Brazil in 2020 benefiting the dispatch of the thermoelectric plant, the most significant impairment adjustment occurred at UEG Araucária, in view of the more gradual expectation of a resumption of energy demand, which affected its long term cash flow estimates, which makes the plant's consumption assumptions occur in a shorter period than the previous projections. For the other projects, there was an impairment reversal, as presented in Note 17.5. In relation to the projections, the main assumptions applied in the preparation of cash flow models did not have a significant impact in the short term, given that most of the energy is already contracted and the amount of energy exposed to Settlement Price of the Differences (PLD) is not significant. In the medium term, there was impact on the prices negotiated in the free market on the portion of non-contracted energy, but with no significant impact for the Company. Finally, in the long term, the main assumptions used to calculate the impairment (future energy prices and Generation Scaling Factor - GSF levels) did not change significantly, accordingly evidencing the recoverability of assets . a.3) Recovery of deferred tax assets The Company has a balance of R$ 1,191,104 related to deferred tax assets on income tax and social contribution losses and temporary differences recorded at December 31, 2020. The Company assessed its estimates of expected future taxable income and did not identify the need for a provision for loss. a.4) Fair value of future energy purchase and sale operations The effects of pandemic on the mark-to-market of electric power purchase and sale agreements occurred mainly in the variation of short-term future prices due to more favorable hydrology and load reduction. In the long-term, future electric power prices did not change significantly. Therefore, at this time, the effects of the pandemic did not have a significant impact on the fair value of the Company's future energy purchase and sale operations. a.5) Fair value of other assets and liabilities At the present time, the effects of the pandemic did not have a significant impact on the fair value of the Company's assets and liabilities, mainly on assets originating from concession agreements that are made in the long-term and are contractually guaranteed to receive residual balance at the end of the concession and/ or right to receive cash during the concession. Accordingly, considering that there were no changes in long-term estimates and assumptions, and that the Company's assets are essential and indicate continuity of operations and cash flows in the medium and long term, up to the present date, despite the fact that the pandemic effects remain uncertain, its effects did not have a significant impact on the fair value of the Company's assets and liabilities. a.6) Post-employment benefits The Company's management has constantly monitored the fair value of the actuarial asset of the post-employment benefit plans due to the instability of the interest rate, which is determined based on market data. Although to the economic instability in this pandemic period, the fair value of the plan assets didn’t fall at December 31, 2020 in relation to the fair value at December 31, 2019. Therefore, the pension plan did not generate additional obligations due to the existence of a surplus, as for the actuarial liabilities of the assistance plan, an increase was recognized in an amount sufficient to cover the actuarial deficit in view of the current assessment, as shown in Note 23. a.7) Liquidity The Company has met its expected liquidity ratios and Management believes the financial situation and working capital are within its sufficient requirements. At December 31, 2020, the Company's consolidated net working capital totals R$ 1,753,039 (R$ 2,563,575, at December 31, 2019) with a balance of cash and cash equivalents of R$ 3,222,768, compared to the balance of R$ 2,941,727 at December 31, 2019. The Company has been monitoring its financial liquidity, considering the possibility of raising funds and the prospect of cash retention, already implemented and under preparation, and taking necessary actions in our operations such as cost reduction and postponement of investments with the objective of guaranteeing compliance with financial obligations in due time. a.8) Other assets The Company has not identified any changes in circumstances that indicate impairment of other assets. It should be noted that the Company records changes in sectorial financial assets and liabilities, updated up to the date of the tariff adjustment/review when, the Granting Authority ratifies the transfer on the tariff base and the Company transfers it to the consumer during the next annual cycle, which at Copel occurs as of June 24 of each year. With the emergency measures for the electric power sector provided for in Provisional Act No. 950 dated April 8, 2020 and in Decree 10,350 of May 18, 2020, Management understands that realization of sector financial assets and liabilities recorded as at December 31, 2020 is sustained. On July 31, 2020, Copel DIS had already had access to the total amount of funds requested from the Covid Account. In view of all of the above, it should be noted that there was no significant or material impact on the Company's business that could change the measurement of its assets and liabilities presented in the financial statements at December 31, 2020, and until the date of this publication. However, considering that, like all companies, Copel is exposed to risks arising from any legal and market restrictions that may be imposed, it is not possible to ensure that there will be no impact on operations or that the result will not be affected by the future consequences of the pandemic. b) Renegotiation of the Hydrological Risk (Generation Scaling Factor-GSF) On September 9, 2020, Law No. 14,052 was published, which amended Law No. 13,203/2015, establishing new conditions for renegotiating the hydrological risk related to the portion of the costs incurred with the GSF, assumed by the holders of the hydroelectric plants participating in the Energy Reallocation Mechanism (MRE) since 2012, with the worsening of the water crisis. The purpose of the legal amendment was to compensate the owners of the hydroelectric power plants participating in the MRE for non-hydrological risks caused: (i) for generation projects called structuring, related to the anticipation of the physical guarantee, (ii) for the restrictions on the start-up of transmission facilities necessary for the flow of the generation of structuring and (iii) for generation outside the order of merit and import. Said compensation will be occur upon the extension of the grant, limited to seven years, calculated based on the values of the standards applied by Aneel. On December 1, 2020, Aneel Normative Resolution No. 895 was issued, which establishes the methodology for calculating the compensation and the procedures for renegotiating the hydrological risk. To be eligible for the compensation provided for in Law No. 14,052, holders of hydroelectric power plants participating in the MRE must: (i) abandon any lawsuits whose purpose is the exemption or mitigation of hydrological risks related to the MRE, (ii) waive any allegation and/or new actions in relation to the exemption or mitigation of the hydrological risks related to the MRE, (iii) not having renegotiated the hydrological risk. In the renegotiation of the hydrological risk, Management will exercise its judgment in the development and application of the accounting policy, as provided for in IAS 8 - Accounting Policies, Changes in Accounting Estimates and Errors, using the precepts of IAS 38 by analogy, in order to deal with it is essentially an intangible asset related to the concession right resulting from compensation for costs incurred in previous years. Additionally, considering also by analogy of the referred IAS 38, the asset to be constituted , in case of renegotiation of the non-hydrological risk, will be recognized at fair value, considering the best estimate of the Company, based on the parameters determined by Aneel's regulation, considering the expected future flows in this new concession period, as well as the compensation values calculated by the Electric Energy Trading Chamber (CCEE). The amount will be transformed by Aneel in extending the term of concession. The compensation to hydroelectric generators, which will occur through the extension of the concession period for concessions of generation, will be recognized, in case of renegotiation, as intangible asset in exchange for the compensation of electricity costs. On March 2, 2021, CCEE released the calculations of the renegotiation of the hydrological risk and the results, which total R$ 1,366,343 for the 15 eligible plants of the Company, to be sent to Aneel and submitted for approval analysis. As of the date of publication of these Financial Statements, the Company has not yet adhered to the renegotiation of the hydrological risk, as the Management awaits the approval by Aneel of the approximately 510 days of average extension of the concession of its plants to assess the possible adherence to the terms of the renegotiation, and waiver of future questioning or lawsuits in relation to the hydrological risks at issue. 1.1 Copel’s equity interests Copel has direct and indirect interests in subsidiaries (1.1.1), joint ventures (1.1.2), associates (1.1.3) and joint operations (1.1.4). 1.1.1 Subsidiaries Headquarters Main activity Interest Subsidiaries % Investor Copel Geração e Transmissão S.A. (Copel GeT) Curitiba/PR Production and transmission of electricity 100.0 Copel Copel Distribuição S.A. (Copel DIS) Curitiba/PR Distribution and marketing of electricity 100.0 Copel Copel Telecomunicações S.A. (Copel TEL) (Note 40) Curitiba/PR Telecommunication and communication 100.0 Copel Copel Serviços S.A. (Copel SER) (a) Curitiba/PR Production of electricity 100.0 Copel Copel Comercialização S.A. (Copel COM) Curitiba/PR Commercialization of electricity 100.0 Copel Companhia Paranaense de Gás - Compagás Curitiba/PR Distribution of pipeline gas 51.0 Copel Elejor - Centrais Elétricas do Rio Jordão S.A. Curitiba/PR Production of electricity 70.0 Copel UEG Araucária Ltda. (UEGA) Curitiba/PR Production of electricity from natural gas 20.3 Copel 60.9 Copel GeT São Bento Energia, Investimentos e Participações S.A. (São Bento) Curitiba/PR Control and management of interests 100.0 Copel GeT Nova Asa Branca I Energias Renováveis S.A. S. Miguel do Gostoso/RN Production of electricity from wind sources 100.0 Copel GeT Nova Asa Branca II Energias Renováveis S.A. Parazinho/RN Production of electricity from wind sources 100.0 Copel GeT Nova Asa Branca III Energias Renováveis S.A. Parazinho/RN Production of electricity from wind sources 100.0 Copel GeT Nova Eurus IV Energias Renováveis S.A. Touros/RN Production of electricity from wind sources 100.0 Copel GeT Santa Maria Energias Renováveis S.A. Maracanaú/CE Production of electricity from wind sources 100.0 Copel GeT Santa Helena Energias Renováveis S.A. Maracanaú/CE Production of electricity from wind sources 100.0 Copel GeT Ventos de Santo Uriel S.A. João Câmara/RN Production of electricity from wind sources 100.0 Copel GeT Cutia Empreendimentos Eólicos S.A. (Cutia) Curitiba/PR Control and management of interests 100.0 Copel GeT Costa Oeste Transmissora de Energia S.A. Curitiba/PR Transmission of electricity 100.0 Copel GeT Marumbi Transmissora de Energia S.A. Curitiba/PR Transmission of electricity 100.0 Copel GeT Uirapuru Transmissora de Energia S.A Curitiba/PR Transmission of electricity 100.0 Copel GeT Bela Vista Geração de Energia S.A. (b) Curitiba/PR Production of electricity 100.0 Copel GeT F.D.A. Geração de Energia Elétrica S.A. (FDA) Curitiba/PR Production of electricity 100.0 Copel GeT Jandaíra I Energias Renováveis S.A. (b) (c) Curitiba/PR Production of electricity from wind sources 100.0 Copel GeT Jandaíra II Energias Renováveis S.A. (b) (c) Curitiba/PR Production of electricity from wind sources 100.0 Copel GeT Jandaíra III Energias Renováveis S.A. (b) (c) Curitiba/PR Production of electricity from wind sources 100.0 Copel GeT Jandaíra IV Energias Renováveis S.A. (b) (c) Curitiba/PR Production of electricity from wind sources 100.0 Copel GeT GE Olho D’Água S.A. São Bento do Norte/RN Production of electricity from wind sources 100.0 São Bento GE Boa Vista S.A. São Bento do Norte/RN Production of electricity from wind sources 100.0 São Bento GE Farol S.A. São Bento do Norte/RN Production of electricity from wind sources 100.0 São Bento GE São Bento do Norte S.A. São Bento do Norte/RN Production of electricity from wind sources 100.0 São Bento Central Geradora Eólica São Bento do Norte I S.A. São Bento do Norte/RN Production of electricity from wind sources 100.0 Cutia Central Geradora Eólica São Bento do Norte II S.A. São Bento do Norte/RN Production of electricity from wind sources 100.0 Cutia Central Geradora Eólica São Bento do Norte III S.A. São Bento do Norte/RN Production of electricity from wind sources 100.0 Cutia Central Geradora Eólica São Miguel I S.A. São Bento do Norte/RN Production of electricity from wind sources 100.0 Cutia Central Geradora Eólica São Miguel II S.A. São Bento do Norte/RN Production of electricity from wind sources 100.0 Cutia Central Geradora Eólica São Miguel III S.A. São Bento do Norte/RN Production of electricity from wind sources 100.0 Cutia Usina de Energia Eólica Guajiru S.A. São Bento do Norte/RN Production of electricity from wind sources 100.0 Cutia Usina de Energia Eólica Jangada S.A. São Bento do Norte/RN Production of electricity from wind sources 100.0 Cutia Usina de Energia Eólica Potiguar S.A. São Bento do Norte/RN Production of electricity from wind sources 100.0 Cutia Usina de Energia Eólica Cutia S.A. São Bento do Norte/RN Production of electricity from wind sources 100.0 Cutia Usina de Energia Eólica Maria Helena S.A. São Bento do Norte/RN Production of electricity from wind sources 100.0 Cutia Usina de Energia Eólica Esperança do Nordeste S.A. São Bento do Norte/RN Production of electricity from wind sources 100.0 Cutia Usina de Energia Eólica Paraíso dos Ventos do Nordeste S.A. São Bento do Norte/RN Production of electricity from wind sources 100.0 Cutia (a) In October 2020 there was a change in the bylaws of Copel Renováveis ​​S.A. which included the change of the corporate name to Copel Serviços S.A. (b) Pre-operating stage. (c) SPEs established with a 99.99% interest in Copel GeT and 0.1% in Cutia. The transfer of all shares to Copel GeT is in progress. Commercialization Contracts in the Regulated Environment - CCEARs. UEG Araucária On November 10, 2020, at the Meeting of Shareholders, the reduction of the share capital of UEG Araucária Ltda., through the absorption of accumulated losses, as well as the transformation of the corporate type of UEGA, from limited company to public limited company was aprroved. 1.1.2 Joint Ventures Joint ventures Headquarters Main activity Interest % Investor Voltalia São Miguel do Gostoso I Participações S.A. São Paulo/SP Interests in companies 49.0 Copel Solar Paraná GD Participções S.A. Curitiba/PR Interests in companies 49.0 Copel Paraná Gás Exploração e Produção S.A. (a) Curitiba/PR Extraction of oil and natural gas 30.0 Copel Caiuá Transmissora de Energia S.A. Rio de Janeiro/RJ Transmission of electricity 49.0 Copel GeT Integração Maranhense Transmissora de Energia S.A. Rio de Janeiro/RJ Transmission of electricity 49.0 Copel GeT Matrinchã Transmissora de Energia (TP NORTE) S.A. Rio de Janeiro/RJ Transmission of electricity 49.0 Copel GeT Guaraciaba Transmissora de Energia (TP SUL) S.A. Rio de Janeiro/RJ Transmission of electricity 49.0 Copel GeT Paranaíba Transmissora de Energia S.A. Rio de Janeiro/RJ Transmission of electricity 24.5 Copel GeT Mata de Santa Genebra Transmissão S.A. (b) Jundiaí/SP Transmission of electricity 50.1 Copel GeT Cantareira Transmissora de Energia S.A. Rio de Janeiro/RJ Transmission of electricity 49.0 Copel GeT (a) Project with halted activities due to a Public Civil Action pending judgment by Federal Court. An arbitration proceeding will be started to decide about relief ofcontractual obligations with no burden for bidders, with consequent return of signing up bonus, refund of incurred costs with collateral and relief of collateral provided. (b) On November 11, 2020, the last asset of the project entered into commercial operation, so that the transmission line is 100% operational. Solar Paraná GD Participações S.A. – in pre-operating phase In May 2020, Copel acquired a 49% interest in Solar Paraná GD Participações S.A., which is a holding company of six Special Purpose Entities (SPE), operating in the distributed generation sector: Pharma Solar II, Pharma Solar III, Pharma Solar IV, Bandeirantes Solar I, Bandeirantes Solar II, and Bandeirantes Solar III. In the acquisition process, the fair values of the net assets acquired were identified and Copel recorded a bargain purchase in profit or loss for the year, as shown in the table below: Fair value on net assets acquired 1,106 Percentage of interest transferred 49% Fair value on net assets acquired by Copel 542 Transferred consideration amount 294 Bargain purchase (negative goodwill) 248 On March 1, 2021, commercial operation began with 3 MWp (megawatt-peak, photovoltaic power unit) out of a total of 5.36 MWp of installed power, enough to already serve the energy consumption of approximately 2,500 homes. 1.1.3 Associates Associated companies Headquarters Main activity Interest % Investor Dona Francisca Energética S.A. Agudo/RS Production of electricity 23.0303 Copel Foz do Chopim Energética Ltda. Curitiba/PR Production of electricity 35.77 Copel GeT Carbocampel S.A. Figueira/PR Coal exploration 49.0 Copel Sercomtel S.A. Telecomunicações On August 18, 2020, the auction for the sale of the shares of Sercomtel S.A. Telecomunicações was successfully held. In October 2020, the Share Purchase and Sale Agreement (CCVA) was signed by Copel and the buyer, Bordeaux Fundo de Investimento em Participações Multiestratégia. On October 27, 2020, and December 7, 2020 the Administrative Council for Economic Defense ( Conselho Administrativo de Defesa Econômica Agência Nacional de Telecomunicações On December 23, 2020, Copel received the amount of R$ 1,536 for the sale of the asset and this amount was fully recorded as a gain in 2020 profit considering that Copel's investment was reduced to zero due to the tests of recovery of this asset. Dominó Holdings Ltda. On December 10, 2020, in common and reciprocal agreement, the partners Copel Comercialização S.A. and Andrade Gutierrez Participações S.A. signed a Company Dissolution Term to dissolve the commercial company incorporated under the corporate name of Dominó Holdings Ltda. At Copel Comercialização S.A., the investment balance adjusted this date, amounting to R$ 153, was fully transferred to “Other receivables”. 1.1.4 Joint Operations (consortiums) Joint operations - Consortiums Consortium members Interest (%) Consórcio Energético Cruzeiro do Sul (Note 17.4) Copel GeT 51.0 Eletrosul Centrais Elétricas S.A. 49.0 Consórcio Empreendedor Baixo Iguaçu (Note 17.4) Copel GeT 30.0 Geração Céu Azul S.A (subsidiary of Neo

2 Concessions and Authorization

2 Concessions and Authorizations	12 Months Ended
	Dec. 31, 2020
Concessions And Authorizations [Abstract]
Concessions and Authorizations	2 Concessions and Authorizations 2.1 Concession contracts or authorizations obtained by Copel Copel Interest % Maturity Concession agreement / authorization of the equity Copel DIS Contract 046/1999, extended by 5th addendum to the contract 100 07.07.2045 Copel TEL (Note 40) Authorization term 54/2003 - Anatel/SVP/PVST 100 Indeterminate Authorization term 305/2012 - Anatel/SVP/PVST 100 Indeterminate Elejor Contract 125/2001 - HPP Fundão and Santa Clara 70 05.28.2037 Authorization - SHP Fundão I and SHP Santa Clara I - 753/2002 and 757/2002 70 12.19.2032 Dona Francisca Energética Contract 188/1998 - HPP Dona Francisca 23 08.28.2033 UEG Araucária Authorization 351/1999 - TPP Araucária (60.9% Copel GET) 20.3 12.23.2029 Compagás (2.1.1) Concession gas distribution contract 51 01.20.2019 Paraná Gás (1.1.2 - a) PART-T-300_R12 4861-.0000.99/2014-00 - ANP 30 05.15.2045 Usina de Energia Eólica São João S.A. (a) MME Ordinance 173 /2012 - WPP São João 49 03.26.2047 Usina de Energia Eólica Carnaúba S.A. (a) MME Ordinance 204 /2012 - WPP Carnaúbas 49 04.09.2047 Usina de Energia Eólica Reduto S.A. (a) MME Ordinance 230 /2012 - WPP Reduto 49 04.16.2047 Usina de Energia Eólica Santo Cristo S.A. (a) MME Ordinance 233/2012 - WPP Santo Cristo 49 04.18.2047 (a) Subsidiaries of Voltalia São Miguel do Gostoso I Participações S.A. Hydroelectric Power Plant - HPP Small Hydroelectric Plant - SHP Thermal Power Plant - TPP Wind Power Plant - WPP 2.1.1 Compagás Compagás is a party to a concession agreement entered into with the Concession Grantor, the State of Paraná, which determines the date of July 6, 2024 as the concession's expiration date. On December 7, 2017, the State of Paraná published Complementary Law 205, introducing a new interpretation to the end of the concession, understanding that expiration occurred on January 20, 2019. There was an understanding among the shareholders that the law could be challenged and Compagás filed a lawsuit, considering the unconstitutionality of the Law. Provisional protection was granted to Compagás recognizing the validity of the maturity clause provided for in the contract. In view of the above, however, there was no consensus between Copel's and Compagás' understanding of which document should be used for accounting recognition, so that Copel considered the Supplementary Law as a document for accounting purposes while the Compagás maintained its accounting records considering the expiration date provided for in the concession contract. On December 1, 2020, Supplementary Law No. 227 was issued, revoking article 15 of Supplementary Law No. 205/17, which determined the expiration of the concession for the exploitation of gas services channeled by Compagás on January 20, 2019. Therefore, Copel reassessed the balances of Compagás' financial assets and intangible assets within its consolidated balance sheet, so that, as of December 2020, the balance of the financial assets, to be received for the indemnity provided for in the concession contract, is the same balance recorded in the balance sheet of its investee and the difference generated by the practice adjustment made since December 2017, recorded in intangible assets, will be amortized until the end of the concession. The impacts recorded are as follows: 12.31.2020 Compagás balances Adjustments Copel balances STATEMENTS OF FINANCIAL POSITION Noncurrent assets Accounts receivable related to the concession 189,416 - 189,416 Intangible assets 102,627 29,739 132,366 STATEMENTS OF INCOME Net operating revenue Fair value of assets from the indemnity for the concession 34,591 (22,437) 12,154 Operating Costs Amortization (29,442) 199 (29,243) 12.31.2019 Compagás balances Adjustments Copel balances STATEMENTS OF FINANCIAL POSITION Noncurrent assets Accounts receivable related to the concession 144,813 179,572 324,385 Intangible assets 127,598 (127,598) - STATEMENTS OF INCOME Net operating revenue Fair value of assets from the indemnity for the concession 9,181 1,234 10,415 Operating Costs Amortization (28,854) 400 (28,454) 12.31.2018 Compagás balances Adjustments Copel balances STATEMENTS OF FINANCIAL POSITION Noncurrent assets Accounts receivable related to the concession 148,720 199,257 347,977 Intangible assets 152,538 (148,919) 3,619 STATEMENTS OF INCOME Net operating revenue Fair value of assets from the indemnity for the concession 9,184 3,009 12,193 Operating Costs Amortization (29,012) 6,253 (22,759) 2.2 Concession contracts or authorizations obtained by Copel Get and its investees Copel GeT Interest % Maturity ONEROUS CONCESSION BY THE USE OF PUBLIC PROPERTY - UBP Generation Concession 001/2007 - HPP Gov. Jayme Canet Júnior (Mauá) 51 07.02.2042 Generation concession 001/2011 - HPP Colíder 100 01.17.2046 Ordinance 133/2011 - SHP Cavernoso II 100 02.28.2046 Generation Concession 002/2012 - HPP Baixo Iguaçu 30 10.30.2049 Generation Concession 007/2013 HPP Apucaraninha 100 10.12.2025 HPP Chaminé 100 08.16.2026 HPP Derivação do Rio Jordão 100 11.15.2029 HPP Cavernoso 100 01.07.2031 PUBLIC SERVICE CONCESSIONS Generation concession 045/1999 TPP Figueira (Note 35.2.6) 100 03.27.2019 HPP São Jorge (Note 35.2.6) 100 12.05.2024 HPP Gov. Ney Aminthas de Barros Braga (Segredo) 100 11.16.2029 HPP Gov. José Richa (Salto Caxias) 100 05.05.2030 Generation concession 001/2020 UHE Guaricana 100 08.16.2026 Authorization 278/1999 - WPP Palmas 100 09.29.2029 Dispatch 182/2002 - Hydroeletric Generating Plant - HGP Melissa, HGP Pitangui and HGP Salto do Vau (only register with ANEEL) 100 - Generation concession 003/2016 - HPP Gov. Pedro Viriato Parigot de Souza (GPS) 100 01.05.2046 HPP Marumbi - Power generating plant registration: CGH. PH. PR. 001501-6.02 100 - Authorization Aneel 5,373/2015 - HGP Chopim I (only register with ANEEL) 100 - Concession agreement / authorization of the equity UEG Araucária Authorization 351/1999 - TPP Araucária (20,3% - Copel) 60.9 12.23.2029 Nova Asa Branca I MME Ordinance 267/2011 - WPP Asa Branca I 100 04.25.2046 Nova Asa Branca II MME Ordinance 333/2011 - WPP Asa Branca II 100 05.31.2046 Nova Asa Branca III MME Ordinance 334/2011 - WPP Asa Branca III 100 05.31.2046 Nova Eurus IV MME Ordinance 273/2011 -WPP Eurus IV 100 04.27.2046 Santa Maria MME Ordinance 274/2012 - WPP SM 100 05.08.2047 Santa Helena MME Ordinance 207/2012 - WPP Santa Helena 100 04.09.2047 Ventos de Santo Uriel MME Ordinance 201/2012 - WPP Santo Uriel 100 04.09.2047 GE Boa Vista MME Ordinance 276 /2011 - WPP Dreen Boa Vista 100 04.28.2046 GE Farol MME Ordinance 263 /2011 - WPP Farol 100 04.20.2046 GE Olho D’Água MME Ordinance 343 /2011 - WPP Dreen Olho D'Água 100 06.01.2046 GE São Bento do Norte MME Ordinance 310 /2011 - WPP Dreen São Bento do Norte 100 05.19.2046 Esperança do Nordeste MME Ordinance 183/2015 - WPP Esperança do Nordeste 100 05.11.2050 Paraíso dos Ventos do Nordeste MME Ordinance 182/2015 - WPP Paraíso dos Ventos do Nordeste 100 05.11.2050 Usina de Energia Eólica Jangada Resolution 3,257/2011 - WPP GE Jangada 100 01.05.2042 Maria Helena Resolution 3,259/2011 - WPP GE Maria Helena 100 01.05.2042 Usina de Energia Eólica Potiguar MME Ordinance 179/2015 - WPP Potiguar 100 05.11.2050 Usina de Energia Eólica Guajiru Resolution 3,256/2011 - WPP Dreen Guajiru 100 01.05.2042 Usina de Energia Eólica Cutia Resolution 3,258/2011 - WPP Dreen Cutia 100 01.05.2042 São Bento do Norte I Ordinance 349/2015 - WPP São Bento do Norte I 100 08.04.2050 São Bento do Norte II Ordinance 348/2015 - WPP São Bento do Norte II 100 08.04.2050 São Bento do Norte III Ordinance 347/2015 - WPP São Bento do Norte III 100 08.04.2050 São Miguel I Ordinance 352/2015 - WPP São Miguel I 100 08.04.2050 São MigueI lI Ordinance 351/2015 - WPP São Miguel II 100 08.04.2050 São Miguel III Ordinance 350/2015 - WPP São Miguel III 100 08.04.2050 Foz do Chopim Authorization 114/2000 - SHP Arturo Andreoli 35.77 04.24.2030 SHP Bela Vista (a) Resolution 913/2017 - transfer of title under Resolution 7,802/2019 100 01.02.2041 F.D.A. Geração de Energia Elétrica Generation concession contract 002/2020 100 09.17.2023 Jandaíra I Energias Renováveis (a) Ordinance 140/2020 - WPP Jandaíra I 100 04.02.2055 Jandaíra II Energias Renováveis (a) Ordinance 141/2020 - WPP Jandaíra II 100 04.02.2055 Jandaíra III Energias Renováveis (a) Ordinance 142/2020 - WPP Jandaíra III 100 04.02.2055 Jandaíra IV Energias Renováveis (a) Ordinance 139/2020 - WPP Jandaíra IV 100 04.02.2055 (a) Building under construction. Copel GeT Interest % Maturity Next tariff review Transmission lines and substations concession agreements Contract 060/2001 - Transmission facilities (sundry Transmission lines and Substations) - Extended by the 3rd addendum 100 01.01.2043 2023 Contract 075/2001 - Transmission line 230 kV Bateias - Jaguariaíva 100 08.17.2031 (b) Contract 006/2008 - Transmission line 230 kV Bateias - Pilarzinho 100 03.17.2038 2023 Contract 027/2009 - Transmission line 525 kV Foz do Iguaçu - Cascavel Oeste 100 11.19.2039 2025 Contract 010/2010 - Transmission line 500 kV Araraquara II - Taubaté 100 10.06.2040 2021 Contract 015/2010 - Substation Cerquilho III 230/138 kV 100 10.06.2040 2021 Contract 022/2012 - Transmission line 230 kV Londrina - Figueira and Transmission line 230 kV Foz do Chopim - Salto Osório 100 08.27.2042 2023 Contract 002/2013 - Transmission line 230 kV Assis - Paraguaçu Paulista II e Substation Paraguaçu Paulista II 230 kV 100 02.25.2043 2023 Contract 005/2014 - Transmission line 230 kV Bateias - Curitiba Norte e Substation Curitiba Norte 230/138 kV 100 01.29.2044 2024 Contract 021/2014 - Transmission line 230 kV Foz do Chopim - Realeza e Substation Realeza 230/138 kV 100 09.05.2044 2025 Contract 022/2014 - Transmission line 500 kV Assis - Londrina 100 09.05.2044 2025 Contract 006/2016 - Transmission line 525 kV Curitiba Leste - Blumenau (a) 100 04.07.2046 2021 Contract 006/2016 - Transmission line 230 kV Baixo Iguaçu - Realeza Contract 006/2016 - Transmission line 230 kV Curitiba Centro - Uberaba Contract 006/2016 - Substation Medianeira 230/138 kV Contract 006/2016 - Substation Curitiba Centro 230/138 kV Contract 006/2016 - Substation Andirá Leste 230/138 kV Concession agreement / authorization of the equity Costa Oeste Transmissora Contract 001/2012: 100 01.12.2042 2022 Transmission line 230 kV Cascavel Oeste - Umuarama Substation Umuarama 230/138 kV Caiuá Transmissora Contract 007/2012: 49 05.10.2042 2022 Transmission line 230 kV Umuarama - Guaíra Transmission line 230 kV Cascavel Oeste - Cascavel Norte Substation Santa Quitéria 230/138/13,8 kV Substation Cascavel Norte 230/138/13,8 kV Marumbi Transmissora Contract 008/2012: 100 05.10.2042 2022 Transmission line 525 kV Curitiba - Curitiba Leste Substation Curitiba Leste 525/230 kV Integração Maranhense Contract 011/2012: Transmission line 500 Kv Açailândia - Miranda II 49 05.10.2042 2022 Matrinchã Transmissora Contract 012/2012: 49 05.10.2042 2022 Transmission line 500 kV Paranaíta - Cláudia Transmission line 500 kV Cláudia - Paranatinga Transmission line 500 kV Paranatinga - Ribeirãozinho Substation Paranaíta 500 kV Substation Cláudia 500 kV Substation Paranatinga 500 kV Guaraciaba Transmissora Contract 013/2012: 49 05.10.2042 2022 Transmission line 500 kV Ribeirãozinho - Rio Verde Norte Transmission line 500 kV Rio Verde Norte - Marimbondo II Substation Marimbondo II 500 kV Paranaíba Transmissora Contract 007/2013: 24.5 05.02.2043 2023 Transmission line 500 kV Barreiras II - Rio das Éguas Transmission line 500 kV Rio das Éguas - Luziânia Transmission line 500 kV Luziânia - Pirapora 2 Mata de Santa Genebra Contract 001/2014: 50.1 05.14.2044 2024 Transmission line 500 kV Itatiba - Bateias Transmission line 500 kV Araraquara 2 - Itatiba Transmission line 500 kV Araraquara 2 - Fernão Dias Substation Santa Bárbara D ́Oeste 440 kV Substation Itatiba 500 kV Substation Fernão Dias 500/440 kV (a) Cantareira Transmissora Contract 019/2014: Transmission line Estreito - Fernão Dias 49 09.05.2044 2025 Uirapuru Transmissora Contract 002/2005: Transmission line 525 kV Ivaiporã - Londrina 100 03.04.2035 (b) (a) Beginning of commercial operation on April 1, 2021 (b) Do not undergo tariff review and RAP reduces to 50% in the 16th year During 2019, three important enterprises started their commercial operations: - UHE Colíder: - UHE Baixo Iguaçu: - Cutia and Bento Miguel Wind Complexes: As of December 31, 2020, the main projects under construction are still in progress.

3 Basis of Preparation

3 Basis of Preparation	12 Months Ended
	Dec. 31, 2020
Basis Of Preparation [Abstract]
Basis of Preparation	3 Basis of Preparation 3.1 Statements of compliance The consolidated financial statements have been prepared in accordance with International Financial Reporting Standards (IFRS), issued by the International Accounting Standards Board – IASB. The Company's Management believes that all the relevant information used in its management is evidenced in the consolidated financial statements, and that it corresponds to that used by Management in administering the Company. The issuance of these consolidated financial statements was approved by Management on April 19,2021. 3.2 Functional and presentation currency The financial statements are presented in Brazilian Reais, which is the functional and presentation currency of the Company. Balances herein have been rounded to the nearest thousand, unless otherwise indicated. 3.3 Basis of measurement The financial statements were prepared based on the historical cost, except for certain financial instruments and investments measured at fair value, as described in the respective accounting policies and notes. 3.4 Use of estimates and judgments In the preparation of these financial statements, Management used judgments, estimates and assumptions that affect the application of accounting policies and the reported amounts of assets, liabilities, income and expenses of the Company. Actual results may differ from those estimates. Estimates and assumptions are reviewed on a continuous basis. Changes in estimates are recognized prospectively. 3.4.1 Judgments Information about judgment referring to the adoption of accounting policies which significantly impacts the amounts recognized in the consolidated financial statements, except those involving estimates, is included in the following notes: · Note 4.1 - Basis of consolidation and · Note 4.2 - Financial instruments 3.4.2 Uncertainties over assumptions and estimates Information on uncertainties related to assumptions and estimates that pose a chance of resulting in a material change within the next financial year is included in the following notes: · Notes 4.3 and 9 - Sectorial financial assets and liabilities; · Notes 4.4 and 10 - Accounts receivable related to the concession · Notes 4.5 and 11 - Contract assets; · Notes 4.8 and 17 - Property, plant and equipment; · Notes 4.9 and 18 - Intangible assets; · Notes 4.10.1 and 7.3 - Expected credit losses · Notes 4.10.2, 17.5 and 17.6 - Impairment of assets; · Notes 4.11 and 29 - Provisions for litigation and contingent liabilities; · Note 4.12 - Revenue recognition; · Note 4.14 - Power purchase and sale transactions in the Spot Market (Electric Energy Trading Chamber – CCEE); · Note 4.15 - Derivative financial instruments; · Note 4.16 and 13.1- Deferred income tax and social contribution; and · Note 4.17 and 23 - Post-employment benefits. 3.5 Management’s judgment on going concern Management has concluded that there are no material uncertainties that cast doubt on the Company's ability to continue as a going concern. No events or conditions were identified that, individually or in the aggregate, may raise significant doubts on its ability to continue as a going concern. The main bases of judgment used for such conclusion are: (i) main activities resulting from long-term concessions; (ii) robust equity; (iii) strong operating cash generation, including financial capacity to settle commitments entered into with financial institutions; (iv) historical profitability; and (v) fulfillment of the objectives and targets set forth in the Company's Strategic Planning, which is approved by Management, monitored and reviewed periodically, seeking the continuity of its activities. 3.6 Restatement of comparative balances 3.6.1 Reclassification of the assets of the Existing System Basic Network - RBSE After the initial adoption in 2018 of IFRS 15 and IFRS 9, the Brazilian Securities and Exchange Commission (CVM) published on December 1, 2020 complementary interpretive guidance on the adoption of these standards to be observed in the preparation of the Financial Statements of the Electricity Transmitting Companies for the Financial Statements at December 31, 2020. With regard to the treatment of the assets of the Existing System Basic Network (RBSE), Technical Note No. 336/2016 of Aneel regulated the calculation method for calculating the cost of capital and calculating the Annual Permitted Revenue (RAP) regarding the value of the installations of the RBSE assets and determined payment amounts and terms for the concessionaires. The RAP calculation was divided into two components: economic, referring to the cost of capital of non-depreciated assets in July 2017, and financial, referring to the unpaid cost of capital between January 2013 and June 2017, with annual payment for an 8-year term. Copel's interpretation, when implementing Technical Pronouncements IFRS 15 and IFRS 9, was to classify the financial portion as a financial asset at amortized cost by understanding, at the time, that: Aneel separated the receipt flows with specific contractual terms, that assets are maintained in the business model to receive contractual cash flow; and that the application of the Variable Portion (PV) would not significantly change the economic nature of the financial portion. However, CVM's understanding, presented in Circular Letter/CVM/SNC/ SEP/No. 04/2020, is that there is the same category of RBSE asset, subject to the same regulation and the same tariff and regulation mechanism, in a way that the entire transmission infrastructure should be classified as a contract asset. Accordingly, at December 31, 2020, Copel reclassified the balances of RBSE assets that were recorded in line item Accounts receivable linked to concession to Contract assets. Additionally, the balances of these line items, in the Balance Sheets as of December 31, 2019 and January 1, 2019, are being restated to reflect the reclassification, for comparative purposes, with no effect on the total current assets and non-current assets, in the statements of income, comprehensive income and cash flows of previous years. The reclassification also had no impact the covenants of borrowing and debenture agreements. The following tables show the effects only between the asset line items: 12.31.2019 As previously stated Adjustments Restated STATEMENT OF FINANCIAL POSITION ASSETS 38,312,550 - 38,312,550 CURRENT ASSETS 7,909,196 - 7,909,196 Accounts receivable - concessions 58,842 (54,297) 4,545 Contract assets 107,443 54,297 161,740 NONCURRENT ASSETS 30,403,354 - 30,403,354 Accounts receivable - concessions 2,558,796 (684,972) 1,873,824 Contract assets 3,943,941 684,972 4,628,913 01.01.2019 As previously stated (a) Adjustments Restated STATEMENT OF FINANCIAL POSITION ASSETS 36,048,122 - 36,048,122 CURRENT ASSETS 6,677,846 - 6,677,846 Accounts receivable - concessions 53,177 (48,997) 4,180 Contract assets 85,019 48,997 134,016 NONCURRENT ASSETS 29,370,276 - 29,370,276 Accounts receivable - concessions 2,497,514 (704,829) 1,792,685 Contract assets 3,348,211 704,829 4,053,040 (a) The balance considers the adjustments of 01.01.2019 resulting from the initial application of IFRS 16, as shown in Note 4.16 of the Consolidated Financial Statements of December 31, 2019. 3.6.2 Discontinued operation As result of the divestment process of Copel Telecomunicações S.A., described in Note 40, the balances of the Consolidated Statements of Income, Consolidated Statements of Comprehensive Income and Consolidated Statements of Cash Flows are being restated for comparison purposes, according to paragraph 34 of IFRS 5, as follows: 12.31.2019 As previously stated Discontinued operations Restated STATEMENTS OF INCOME NET OPERATING REVENUE 16,244,274 (375,029) 15,869,245 Operating costs (11,760,176) 296,028 (11,464,148) GROSS PROFIT 4,484,098 (79,001) 4,405,097 Selling expenses (207,059) 31,287 (175,772) General and administrative expenses (734,300) 23,011 (711,289) Other operational income (expenses) (458,815) 136,309 (322,506) Equity in earnings of investees 106,757 - 106,757 Profit before financial results and taxes 3,190,681 111,606 3,302,287 Financial results (488,486) 33,122 (455,364) Operating profit 2,702,195 144,728 2,846,923 Income tax and social contribution (639,326) (36,335) (675,661) Net income for the period - continuing operations 2,062,869 108,393 2,171,262 Result of discontinued operations - (108,393) (108,393) Net income 2,062,869 - 2,062,869 Attributed to controlling shareholders 1,989,946 - 1,989,946 Attributed to non-controlling interest 72,923 - 72,923 STATEMENTS OF COMPREHENSIVE INCOME Total comprehensive income, net of taxes (123,184) - (123,184) Total comprehensive income 1,939,685 - 1,939,685 Attributed to controlling shareholders 1,862,489 - 1,862,489 Attributed to non-controlling interest 77,196 - 77,196 STATEMENTS OF CASH FLOWS Cash flow from opertional activities 2,945,006 - 2,945,006 Net income 2,062,869 - 2,062,869 Profit adjustments 2,416,665 (419,093) 1,997,572 Changes in assets and liabilities 75,908 38,821 114,729 Taxes and charges paid (1,610,436) 51,464 (1,558,972) Result of discontinued operations - 328,808 328,808 Cash flow from investment activities (1,663,651) - (1,663,651) Property, plant and equipment and intangible assets (548,162) 175,568 (372,594) Other activities (1,115,489) - (1,115,489) Discontinued operations - (175,568) (175,568) Cash flow from financing activities (288,037) - (288,037) Issue of Loans and Debentures 3,761,324 (210,000) 3,551,324 Loan, debentures and lease payments (3,668,940) 9,260 (3,659,680) Other activities (380,421) - (380,421) Discontinued operations - 200,740 200,740 Total effects on cash and cash equivalents 993,318 - 993,318 12.31.2018 As previously stated Discontinued operations Restated STATEMENTS OF INCOME NET OPERATING REVENUE 14,934,780 (384,316) 14,550,464 Operating costs (11,501,688) 128,780 (11,372,908) GROSS PROFIT 3,433,092 (255,536) 3,177,556 Selling expenses (148,709) 43,295 (105,414) General and administrative expenses (723,534) 16,690 (706,844) Other operational income (expenses) (302,690) 52,686 (250,004) Equity in earnings of investees 135,888 - 135,888 Profit before financial results and taxes 2,394,047 (142,865) 2,251,182 Financial results (438,050) 24,905 (413,145) Operating profit 1,955,997 (117,960) 1,838,037 Income tax and social contribution (511,993) 40,827 (471,166) Net income for the period - continuing operations 1,444,004 (77,133) 1,366,871 Result of discontinued operations - 77,133 77,133 Net income 1,444,004 - 1,444,004 Attributed to controlling shareholders 1,407,063 - 1,407,063 Attributed to non-controlling interest 36,941 - 36,941 STATEMENTS OF COMPREHENSIVE INCOME Total comprehensive income, net of taxes (38,360) - (38,360) Total comprehensive income 1,405,644 - 1,405,644 Attributed to controlling shareholders 1,368,549 - 1,368,549 Attributed to non-controlling interest 37,095 - 37,095 STATEMENTS OF CASH FLOWS Cash flow from opertional activities 1,770,971 - 1,770,971 Net income 1,444,004 - 1,444,004 Profit adjustments 1,204,142 (209,217) 994,925 Changes in assets and liabilities 381,474 11,478 392,952 Taxes and charges paid (1,258,649) 83,488 (1,175,161) Result of discontinued operations - 114,251 114,251 Cash flow from investment activities (2,149,153) - (2,149,153) Property, plant and equipment and intangible assets (1,496,644) 280,542 (1,216,102) Other activities (652,509) - (652,509) Discontinued operations - (280,542) (280,542) Cash flow from financing activities 1,286,516 - 1,286,516 Issue of Loans and Debentures 4,205,049 - 4,205,049 Loan and debentures payments (2,617,811) 5,804 (2,612,007) Other activities (300,722) - (300,722) Discontinued operations - (5,804) (5,804) Total effects on cash and cash equivalents 908,334 - 908,334 3.6.3 Earnings and dividends per share On March 11, 2021, the General Meeting approved the submission of the proposal for comprehensive amendment and consolidation of the Company's bylaws, including, among other changes, the share split of the Company, in the proportion of one share for ten shares, so that, for every one share issued by the Company, nine new shares of the same class and type will be credited. Considering IAS 33, these Financial Statements present the values of basic and diluted net profit per share and dividends per share for 2019 and 2018 adjusted, considering the new number of shares, after the split. The table shows the values of earnings per share presented in the Financial Statements as of December 31, 2019 and 2018 and the values that are being restated, equivalent to the value already disclosed divided by 10: 12.31.2019 As previously stated Restated Basic and diluted net earning per share attributed to controlling shareholders Common shares 6.94344 0.69440 Class "A" Preferred shares 9.11525 0.85790 Class "B" Preferred shares 7.63812 0.76388 Gross value of dividends per share Common shares 2.24235 0.22423 Class "A" Preferred shares 3.94657 0.39466 Class "B" Preferred shares 2.46692 0.24669 12.31.2018 As previously stated Restated Basic and diluted net earning per share attributed to controlling shareholders Common shares 4.91091 0.49109 Class "A" Preferred shares 5.40201 0.54020 Class "B" Preferred shares 5.40201 0.54020 Gross value of dividends per share Common shares 1.31950 0.13195 Class "A" Preferred shares 2.89050 0.28905 Class "B" Preferred shares 1.45151 0.14515

4 Significant Accounting Polici

4 Significant Accounting Policies	12 Months Ended
	Dec. 31, 2020
Significant Accounting Policies [Abstract]
Significant Accounting Policies	4 Significant Accounting Policies 4.1 Basis of consolidation 4.1.1 Calculation of equity in earnings of investees Investments in joint ventures and associate are recognized in the consolidated financial statements based on the equity method. Under this method, investments are initially recorded at cost and their carrying amount is increased or decreased by the recognition of the investor's interest in profit, loss and other comprehensive income generated by investees after acquisition. This method must be discontinued from the date the investment ceases to qualify as a jointly controlled or associated company. Payment of dividends decreases the carrying value of investments When required, for calculation of equity in earnings of investees, the investees' financial statements are adjusted to align their policies with the Company's accounting policies 4.1.2 Subsidiaries The subsidiaries are entities to which the Company is exposed to or has a right over the variable returns arising from its involvement with them and has the ability to affect those returns exerting its power over the entities. The financial statements of the subsidiaries are included in the consolidated financial statements as from the date they start to be controlled by the Company until the date such control ceases. The balances of the subsidiaries’ assets and liabilities, and profit or loss, are consolidated and transactions between consolidated companies are eliminated. The balances of transactions between continuing operations and discontinued operations are also fully eliminated in the consolidated balance sheet. 4.1.3 Noncontrolling interests Noncontrolling interests are presented in equity, separately from the equity attributable to the Company's shareholders. Profits, losses and other comprehensive income are also allocated separately from the ones allocated to the Company's shareholders, even if this procedure results in negative noncontrolling interest balance. 4.1.4 Joint ventures and associates Joint ventures are entities over which the Company, subject to an agreement, has the ability to affect returns exerting its power in conjunction with other parties, irrespective of the percentage of interest in the voting capital. Associates are entities over which the Company exerts significant influence regarding financial and operational decisions, without control. When the share in losses of a joint venture or associate equals or exceeds the accounting balance of the investor’s equity interest in the investee, the investor should discontinue the recognition of its share in future losses. Additional losses will be considered, and a liability will be recognized, only if the investor incurs legal or constructive obligations, or performs payments on behalf of the investee. Should the investee subsequently post profits, the investor should resume the recognition of its interest in these profits only subsequent to the point at which the portion to which it is entitled to in these subsequent profits equals its share in unrecognized losses. 4.1.5 Joint operations (consortiums) Joint operation is a joint business according to which parties that jointly control the business have rights on assets and obligations regarding liabilities related to the business. Joint operations are recorded in proportion to the share of interest held in their assets, liabilities and profit or loss. 4.1.6 Business combination The acquisition analysis is done on a case-by-case basis to determine whether the transaction represents a business combination or an asset purchase. Transactions between companies under common control do not constitute a business combination. Assets and liabilities acquired in a business combination are accounted for using the acquisition method and are recognized at their fair value at the acquisition date. The excess of the acquisition cost over the fair value of the net assets acquired (identifiable assets acquired, net of assumed liabilities) is recognized as goodwill in intangible assets. When the amount generated is negative, the bargain purchase gain is recognized directly in profit or loss. The amount paid that refers specifically to the concession right acquired in a business combination where the acquired entity is a concession operator, whose right to the concession has a known and defined term, is not characterized as goodwill. In acquisitions of interests in affiliates and in joint ventures, although they do not constitute a business combination, the net assets acquired are also recognized at fair value. Goodwill is presented in the investment. 4.2 Financial Instruments Financial instruments are recognized immediately on the trade date, that is, when the obligation or right arises. They are initially recorded at fair value, unless it is a trade receivable without a significant financing component, plus, for an item not measured at fair value through profit or loss, any directly attributable transaction costs. An accounts receivable from customers without a significant component of financing is initially measured at the price of the transaction. Fair values ​​are determined based on market prices for financial instruments with active market, and by the present value method of expected cash flows, for those that have no quotation available in the market. The Company does not have financial instruments measured at fair value through other comprehensive income. The Company operates with derivative financial instruments as described in Note 4.15. Financial assets are not reclassified subsequent to initial recognition, unless the Company changes the business model for the management of financial assets, in which case all affected financial assets are reclassified on the first day of the reporting period subsequent to the change in business model. The Company's financial instruments are classified and measured as described below. 4.2.1 Financial assets recorded at fair value through profit or loss Financial assets recorded at fair value through profit or loss include assets classified as held for trading, financial assets designated upon initial recognition as at fair value through profit or loss or financial assets required to be measured at fair value. Financial assets are classified as held for trading if they are acquired for the purpose of being sold or repurchased in the near term. Financial assets with cash flows that are not solely payments of principal and interest are classified and measured at fair value through profit or loss, irrespective of the business model. After initial recognition, transaction costs and attributable interest expenses, when incurred, are recognized through profit or loss. 4.2.2 Financial assets measured at amortized cost These are so classified and measured when: (i) the financial asset is maintained within a business model whose objective is to maintain financial assets in order to receive contractual cash flows; and (ii) the contractual terms of the financial asset give rise, on specified dates, to cash flows that exclusively comprise payments of principal and interest on the principal amount outstanding. 4.2.3 Financial liabilities measured at amortized cost Financial liabilities are measured at amortized cost using the effective interest method. This method is also used to allocate interest expense of these liabilities for the period. The effective interest rate is the rate that discounts estimated future cash flows (including fees paid or received that form an integral part of the effective interest rate, transaction costs and other premiums or discounts) over the expected life of the financial liability or, when appropriate, over a shorter period, for the initial recognition of the net carrying amount. 4.2.4 Financial liabilities measured at fair value through Profit or Loss These are liabilities designated upon initial recognition as at fair value through profit or loss and those classified as held for trading. Financial liabilities designated fair value through profit or loss are stated at fair value with the respective gains or losses in fair value recognized in the statement of income. Net gains or losses recognized in profit or loss include the interest paid on the financial liability. 4.2.5 Derecognition of financial assets and liabilities The Company derecognizes a financial asset when the contractual rights to the cash flows from the financial asset expire, or it transfers the rights to receive the contractual cash flows in a transaction in which substantially all of the risks and rewards of ownership of the financial asset are transferred or in which the Company neither transfers nor retains substantially all of the risks and rewards of ownership and it does not retain control of the financial asset. The Company derecognizes financial liabilities only when its obligations are discharged, cancelled or settled. The difference between the carrying amount of the derecognized financial liability and the corresponding disbursement made, or to be made, is recorded to profit or loss. 4.3 Net sectorial financial assets and liabilities According to the amendment to the concession agreement of distribution companies, the Company records changes in sectorial financial assets and liabilities, until the next tariff adjustment/review process, when the Concession Grantor approves the transfer as components of the power tariff and thus, it passes the adjustment on to consumers in the next tariff cycle, which occurs on June 24 of each year. The balances of the net sectorial financial assets and liabilities comprise: a) Parcel A Variation Compensation Account - CVA, which records the variation between estimated and actual energy purchase and transmission costs and sector charges, and b) financial items, which correspond to energy over-contracting, neutrality of charges and other rights and obligations included in the tariff. After approval of the Annual Tariff Adjustment and Periodic Tariff Review, the new tariff applied for the tariff year provides for the collection or return of the constituted assets and liabilities. In the event of termination of the concession for any reason, the residual values of Part A items and other financial components not recovered or returned through tariff are incorporated in the calculation of compensation or deducted from unamortized assets indemnity values, thus protecting rights or obligations of the distribution company to the Concession Grantor. 4.4 Accounts receivable related to the concession Refer to financial assets of the concessions with unconditional right to receive cash by the Company, guaranteed by the Concession Grantor by contractual clause and specific legislation. 4.4.1 Power distribution service concession The concession agreement for electricity distribution provides that the users of the public service remunerate part of the investments made by the concessionaire and the Concession Grantor at the end of the concession indemnifies the other party. This model provides for the recognition of financial assets, contract assets in the construction period and intangible assets. The portion recognized as financial asset refers to the indemnity set forth in the public power distribution service concession agreements, which the Company understands as an unconditional right to cash payments from the Concession Grantor upon expiration of the concession. This indemnification aims to reimburse the Company for investments made in infrastructure, without recovery, through the tariff. The cash flows related to these assets are determined taking into account the Regulatory Compensation Basis (Base de Remuneração Regulatória or BRR), defined by the Concession Grantor, and the fair value is recorded based on the replacement cost methodology of the assets included in the distribution infrastructure linked to the concession. 4.4.2 Piped gas distribution service concession Gas concession agreement follows the bifurcated model, whereby part of the investments made by the concession operator is paid by users of the public service and the other part is indemnified by the Concession Grantor, the State of Paraná, at the end of the concession. This model provides for recognition of a financial asset, a contract asset in the construction period and an intangible asset. The amount recognized as a financial asset is the amount that will be indemnified by the Concession Grantor corresponding to the investments made in the last ten years prior to the end of the concession as foreseen in the agreement and that, according to Management, assures the unconditional right to receive cash at the end of the concession. The indemnity assumption is based on the replacement cost of the concession assets. 4.4.3 Bonus for the grant of quota system generation concession agreement The quota system generation concession agreement provides for the payment of a bonus for the grant to the Concession Grantor, pursuant to paragraph 7 of article 8 of Law 12,783/2013. This bonus is recognized as a financial asset because it represents an unconditional right to receive cash, guaranteed by the Concession Grantor during the term of the concession and without risk of demand. The remuneration of this financial asset is based on the Weighted Average Cost of Capital - WACC defined by the National Energy Policy Council (CNPE) in Resolution 2/2015, which is being presented in the statement of income as operating revenue in accordance with the Company's business model. 4.4.4 Concession of power generation The Company has operated and operates concession agreements for power generation that contain indemnification clauses for the infrastructure not depreciated, amortized and/or received during the concession term. After maturity, the residual balance of the assets is transferred to Accounts receivable related to the concession. At the end of each reporting period, Management evaluates the recoverability of the asset, remeasuring its cash flow based on its best estimate. 4.5 Contract assets Represented by the construction in progress or in service of the infrastructure delegated by the Concession Grantor, conditional upon the receipt of revenue not only by the passage of time, but after fulfilling the performance obligation to maintain and operate the infrastructure. 4.5.1 Power distribution service concession Represents the concessionaire's contractual right related to the works under construction to meet the needs of the concession, accounted for at cost plus financial charges, when applicable. When the assets are put into operation, the assets are transferred to the intangible asset, in the amount equivalent to what will be remunerated by the user through payment of the fee for the use of the services, or to the accounts receivable associated to the concession, in the amount equivalent to the residual portion of the assets not amortized, which will be reverted to the Concession Grantor through indemnification at the end of the concession. 4.5.2 Power gas distribution service concession Construction in progress for the distribution of piped gas which will be transferred to intangible assets upon their entry in operation and to the extent that the right (authorization) is received to charge the users of the public service. The amount that will not be amortized within the term of the concession is presented in financial assets, indemnified at the end of the concession by the Concession Grantor according to contractual definition. 4.5.3 Power transmission concession Represents the balance of public electricity transmission contracts signed with the Concession Grantor to build, operate and maintain the high voltage lines and substations of the generation centers up to the distribution points. During the term of the concession agreement, the Company receives, subject to its performance, a remuneration denominated Annual Revenue Allowance (RAP) that remunerates the investments made in the construction of the infrastructure and covers also, the costs of operation and maintenance incurred. After the beginning of the commercial operation and insofar as the operation and maintenance service - O&M is provided, the portion of RAP referring to O&M revenue is recognized in profit or loss at fair value, on a monthly basis, and billed together with the revenue part recognized in the construction phase, referring to the remuneration of the built-up assets. This amount billed after complying with the O&M performance is reclassified to the financial asset under Customers until its effective receipt. The Company estimates its revenue in the construction phase at fair value based on the budgeted cost of the work and used by management as a parameter for bidding on the concession auction. Fair value revenue comprises the budgeted cost for the entire construction period plus the construction margin, which represents sufficient profit to cover the costs of managing and monitoring the work. The remuneration rate of each concession is determined by the projection of the expected cost, of the profit margin on the cost in the construction phase and also of the projection of the RAP to be received in the operational stage, already net of the variable consideration estimate (PV) and the RAP part of the O&M performance. This fair value valuation technique using the income approach discounts cash flow for the entire concession period, determining at initial recognition the implied rate that zeroes the flow over time. This remuneration rate is fixed at the initial period and does not change during the performance of the contract and represents the market rate in effect at the time under the conditions of the negotiation between parties. The assets arising from the construction of the transmission infrastructure are formed by the recognition of construction revenue, according to the percentage of completion of the construction (Note 4.13), and by their financial remuneration (Note 4.12.2). The Company recognizes gains and losses due to efficiency or inefficiency in the construction of the infrastructure and due to periodic tariff review (RTP), when incurred, directly in the statement of income for the year. Upon expiration of the concession, any uncollected amounts related to the construction of infrastructure shall be received directly from the Concession Grantor, as an unconditional right to cash reimbursement pursuant to the concession agreement, as compensation for investments made and not recovered through tariffs (RAP). The assets that compose the Existing System Basic Network - RBSE include one economic tariff component, referring to the cost of capital of the assets not depreciated in July 2017, and one financial tariff component, resulting from the right for the Annual Permitted Revenue (RAP) of the Concession Agreement No. 060/2001, not received in the period from January 2013 to June 2017, plus monetary adjustment and remuneration interest. 4.6 Accounts payable related to the concession These refer to the amounts set forth in the concession agreement in connection with the right to explore hydraulic power generation potential (onerous concession), whose agreement is signed as Use of Public Property (Uso do Bem Público or UBP) agreements. The obligation is recognized on the date of signature of the concession agreement corresponding to the present value of future cash payments for the concession. The liability is then remeasured using the effective interest rate and reduced by contractual payments. 4.7 Inventories (including property, plant and equipment and contract assets) Materials and supplies in inventory, classified under current assets, and those assigned for investments, classified under property, plant and equipment, and contract assets, have been recorded at their average acquisition cost. Recorded amounts do not exceed their net realizable value. 4.8 Property, Plant and Equipment The property, plant and equipment related to the public service concession agreement are depreciated according to the straight-line method based on annual rates set forth and reviewed periodically by ANEEL, which are used and accepted by the market as representative of the economic useful lives of the assets related to concession's infrastructure. Property, plant and equipment related to contracts for the use of public property under the independent electricity producer scheme are depreciated based on annual rates established by ANEEL limited to the concession period. All other property, plant and equipment are depreciated using the straight-line method based on estimates of their useful lives, which is reviewed annually and adjusted if necessary. Costs directly attributable to construction works as well as interest and financial charges on borrowings from third parties during construction are recorded under property, plant and equipment in progress, if it is probable that they will result in future economic benefits for the Company. 4.9 Intangible Assets These comprise software acquired from third parties and software developed in-house and are measured at acquisition cost and amortized over five years, besides Intangible assets from Concession Agreements below. 4.9.1 Onerous concession of electric power generation Corresponds to acquisition of exploration rights on hydropower potential whose onerous concession contract is signed as Use of Public Property - UBP. During construction work, this asset is recognized at the present value of future cash disbursements during the Concession Agreement term. When commercial operation starts, the amount starts to be amortized over the concession period. 4.9.2 Hydrological risk renegotiation (Generation Scaling Factor - GSF) Asset consisting of the renegotiation of the hydrological risk under the terms of Law No. 13,203/2015 and subsequent changes, arising from the amounts recovered from the cost with the adjustment of the Energy Reallocation Mechanism - MRE (GSF). The amount was transformed by ANEEL into an extension of the concession period, which is amortized on a straight-line basis until the end of the new concession period, according to note 14.1. 4.9.3 Power distribution service concession This comprises the right to control infrastructure, built or acquired as part of the electric energy public service concession, and the right to charge fees to the users of the public service. Intangible assets are recorded at their fair acquisition and construction value, less accumulated amortization and impairment losses, when applicable. The amortization of intangible assets reflects the pattern in which it is expected that future economic benefits will flow to the Company during the concession period. During the infrastructure construction phase costs are classified as contract assets (Note 4.5). 4.9.4 Piped gas distribution service concession Intangible assets for piped gas distribution services, which correspond to the right to charge users for the gas supply. This intangible asset was initially recognized at acquisition or construction cost, plus interest and other capitalized finance charges. This asset is amortized using the straight-line basis over its estimated useful life, considering the economic benefits generated by intangible assets. During the infrastructure construction phase, costs are classified as contract assets (Note 4.5). 4.9.5 Intangible assets acquired separately Intangible assets with a finite useful life, acquired separately, are recorded at cost, less accumulated amortization and accumulated impairment losses. Amortization is recognized using the straight-line method based on the estimated useful lives of the corresponding assets. The estimated useful lives and the 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. 4.9.6 Derecognition of intangible assets An intangible asset is derecognized when no future economic benefits are expected from use or disposal. Gains or losses arising from disposal of an intangible asset are recognized in profit or loss, measured as the difference between net disposal proceeds and the carrying amount of the asset. 4.10 Impairment of assets Assets are assessed to detect evidence of impairment. 4.10.1 Financial assets Provisions for losses on financial assets are based on assumptions about default risk, existing market conditions and future estimates at the end of each year. The Company applies the simplified approach of IFRS 9 to the measurement of expected credit losses for the entire existence of financial assets that do not have significant financing components, by considering a provision for expected loss over a useful life for all trade accounts receivable. To measure expected credit losses, trade accounts receivable is grouped based on shared credit risk characteristics, numbers of days late, in the amount considered enough to cover losses on the realization of these assets, based on specific criteria of the payment history, collection actions carried out for the credit recovery and relevance of the amount due in the receivables portfolio. 4.10.2 Non-financial assets Assets under formation arising from onerous concession and concession rights and/or authorization to generate electricity are classified as intangible assets. Impairment is tested along with the other assets of that cash-generating unit. Whenever there is a loss resulting from situations where an asset’s carrying value exceeds its recoverable value, defined as the higher of the asset’s value in use or its net selling price, this loss is recognized in profit or loss for the year. For impairment testing purposes, assets are grouped at the lowest levels for which there are separately identifiable cash flows (Cash Generating Units - CGU). The amount of the impairment of non-financial assets is reviewed at the reporting date. In case of reversal of impairment losses which had been recorded in prior years, this reversal is recognized in current year's profit or loss. The Impairment of contract assets in their construction phase are tested immediately, mainly considering the use of the effective interest rate fixed at the beginning of the project and carried to the end of the concession cash flow. After the beginning of the commercial operation, the portion of revenue recognized is tested for impairment in the accounts receivable from customers. For the receivable part conditioned to fulfill the performance obligation to maintain and operate the infrastructure, the Company has no history and no expectation of losses, since amount are subject to guarantee structures, via shared apportionment of eventual default losses among the other members of the national interconnected system managed by the “Operador Nacional do Sistema” (ONS) and by jurisdiction of the sector. 4.11 Provisions Provisions are recognized when: i) the Company has a present obligation (legal, formalized or non-formalized) resulting from a past event, ii) it is probable (i.e., more likely than not) that an outflow of resources embodying economic benefits will be required to settle the obligation, and iii) a reliable estimate can be made of the amount to settle the obligation. The estimates of outcomes and financial impacts are determined by the Company, which requires use of judgment by Management, supplemented by the experience of similar past transactions and, in some cases, by independent expert reports. Environmental liabilities are recognized as the Company assumes formal obligations before regulatory agencies or becomes aware of potential risks related to environmental issues, which may lead to cash disbursements that are deemed probable and that may be estimated. During the project implementation phase, the accrued amounts are included in property, plant and equipment (generation), construction cost (transmission) or contract assets (distribution). At the start of operations, all costs included in the Operating License, whose programs will be executed during the concession and the respective disbursement has not yet occurred, are measured and adjusted to present value according to the estimated cash flow of disbursements and recorded as environmental provisions matched against the assets related to the project, being adjusted periodically. Once the project enters commercial operation, all costs or expenses incurred with environmental programs related to the project’s operation and maintenance licenses are analyzed according to their nature and included in profit or loss for the period. 4.12 Revenue recognition 4.12.1 Revenue from contracts with customers Revenue is measured based on the consideration that the Company expects to receive in a contract with the customer, net of any variable consideration. The Company recognizes revenues when it transfers control of the product or service to the customer and when it is probable to receive the consideration considering the client's ability and intention to pay the consideration when due. The Company's operating revenue comes mainly from the electricity supply and from the electric network availability. The revenue from electricity supply is recognized monthly based on the data for billing that are determined by the average MW of contracted electricity and declared with the CCEE. When the information is not available, the Company estimates the revenue considering the contracts’ rules, the price estimate and the volume provided. For wind power generation companies subject to minimum generation amounts, the Company understands that it is subject to variable consideration, and for this reason, includes a provision for non-performance based on the annual generation estimates, reducing revenue. Revenue from electric power supply and network availability is recognized monthly based on measured and effectively billed energy. In addition, the Company records unbilled revenue, calculated from the period between the last billing and the end of each month, by estimate based on the last measurement taken. In the concession contract for the public electricity distribution service, non-performance compensations are provided for quality indicators that, when incurred, reduce electricity availability revenue. 4.12.2 Interest income Interest income is recognized when it is probable that future economic benefits will flow to the Company and its amount can be reliably measured. Interest income is recognized on a straight-line basis and based on time and the effective interest rate on outstanding principal amounts. The effective interest rate is the one that discounts the estimated future cash receipts calculated during the estimated life of the financial asset in relation to initial net carrying amount of that asset. Regarding the contract assets of the power transmission concession, financial compensation revenue is recognized using the implicit remuneration rate established at the beginning of each project, which is presented in the statement of income as operating income in accordance with the Company's business model. 4.13 Construction revenues and costs Revenue related to construction services for infrastructure in the power transmission and distribution services, and gas distribution, are recognized over time based on the stage of completion of the work. Related costs are recognized in the statement of income as construction cost. Given that Copel DIS and Compagás outsource the construction of distribution infrastructure to unrelated parties through works carried out in the short term, the construction margin to the power and gas distribution activities result in no significant amounts, resulting in the non-recognition of such margin. The construction margin adopted for the transmission activity for the years 2020, 2019 and 2018 was 1.65%, and results from a calculation methodology which considers the respective business risk. 4.14 Power purchase and sale transactions in the Spot Market (Electric Energy Trading Chamber - CCEE Power purchase and sale transactions in CCEE are recorded on the accrual basis of accounting, based on data released by CCEE, which are calculated by the product of the Differences settlement prices - PLD multiplied by the energy surplus declared with CCEE, or, when such information is not available in a timely manner, by an estimate prepared by Management. 4.15 Derivative Financial Instruments 4.15.1 Power purchase and sale transactions The Company negotiates energy purchase and sale agreements and part of its contracts are designated and classified as derivative financial instruments measured at fair value through profit or loss. Unrealized net gains or losses arising from the mark-to-market of these

5 Cash and Cash Equivalents

5 Cash and Cash Equivalents	12 Months Ended
	Dec. 31, 2020
Cash and cash equivalents [abstract]
Cash and Cash Equivalents	5 Cash and Cash Equivalents 12.31.2020 12.31.2019 Cash and bank accounts 228,711 263,188 Financial investments with immediate liquidity 2,994,057 2,678,539 3,222,768 2,941,727 These comprise cash on hand, deposits with banks and short-term highly liquid investments, which can be redeemed in cash within 90 days from the investment date. Temporary short-term investments are recorded at cost at the reporting date, plus earnings accrued. Cash and cash equivalents are subject to an insignificant risk of change in value. Financial investments of the Company refer to Bank Deposit Certificates - CDBs and Repurchase Agreements, which are the sale of a security with the commitment of the seller (Bank) to repurchase it, and of the purchaser to resell it in the future. Investments have post-fixed interest rates between 85% and 101.5% of Interbank Deposit Certificate (“ CDI”) interest

6 Bonds and Securities

6 Bonds and Securities	12 Months Ended
	Dec. 31, 2020
Bonds And Securities [Abstract]
Bonds and Securities	6 Bonds and Securities The Company hold securities that yield variable interest rates. The term of these securities ranges from 4 to 51 months from the end of the reporting period. Category Index 12.31.2020 12.31.2019 Quotas in Funds (a) CDI 237,141 225,804 Bank Deposit Certificates - CDB 90% to 101% of CDI 62,638 50,216 Financial Treasury Bonds - LFT Selic 751 733 Committed Operation 96.5% of CDI - 3,632 National Treasury Bills- LTN CDI - 1,696 300,530 282,081 Current 1,465 3,112 Noncurrent 299,065 278,969 Interbank Deposit Certificate - CDI Interest rate equivalent to the reference rate of the Special System for Settlement and Custody - Selic (a) These are fixed income funds in the Parent Company and reserve accounts intended to comply with contracts with BNDES, in other companies.

7 Trade Accounts Receivable

7 Trade Accounts Receivable	12 Months Ended
	Dec. 31, 2020
Trade and other receivables [abstract]
Trade Accounts Receivable	7 Trade Accounts Receivable Balances Overdue Overdue for Total Total falling due up to 90 days more than 12.31.2020 12.31.2019 Customers Residential 388,190 211,050 40,184 639,424 579,715 Industrial 213,229 21,048 78,025 312,302 298,719 Commercial 255,691 51,502 28,246 335,439 363,986 Rural 87,666 21,676 309 109,651 103,271 Public Entities 32,687 1,646 3,037 37,370 55,847 Public lighting 42,319 4,296 - 46,615 38,523 Public service 40,856 658 298 41,812 44,983 Unbilled - captives 583,209 - - 583,209 516,203 Energy installments plan - captives (7.1) 206,170 20,011 65,666 291,847 204,192 Low income subsidy - Eletrobras 13,783 - - 13,783 12,174 Free consumers 161,273 1,613 900 163,786 132,756 Other receivables 62,362 23,105 82,803 168,270 148,375 2,087,435 356,605 299,468 2,743,508 2,498,744 Concessionaires, Permission holder and Trading Companies Bilateral contracts 265,432 - - 265,432 191,463 Regulated contracts 162,290 1,792 6,869 170,951 159,492 CCEE (7.2) 533,223 16 119,665 652,904 315,712 Energy suplies 960,945 1,808 126,534 1,089,287 666,667 Charges from using transmission grid 271,008 1,396 9,104 281,508 215,582 . Telecommunications - - - - 67,304 Gas distribution 56,862 1,342 12,724 70,928 111,026 Expected credit losses (7.3) (7,610) (11,964) (345,977) (365,551) (376,756) 3,368,640 349,187 101,853 3,819,680 3,182,567 Current 3,768,242 3,120,168 Noncurrent 51,438 62,399 7.1 Energy installments plan The trade accounts receivable renegotiated are discounted to present value as of December 31, 2020, taking into consideration the future value, the maturity dates, the dates of settlement and the discount rate ranging from 0.49% to 2.89% p.m. 7.2 Electricity Trading Chamber - CCEE Balance receivable deriving from the positive position in the monthly settlement of the spot market centralized by CCEE. Amounts are received in the second month following the recognition of revenue or offset against future settlements when the result is negative for the subsidiary. Of the total presented, R$119,665 refer to the controversial portion resulting from the effects of the injunction for exclusion of responsibility of Colíder HPP. As a result of unforeseeable circumstances and force majeure, the power plant had its commercial start-up delayed, which was initially scheduled for January 2015. The Company is contesting in court, filing a request for exclusion of liability so that the mandatory supply of energy contracted by the plant, in the period in delay, is postponed. Expected credit losses were recorded in the same amount as the receivable balance, as presented in Note 7.3 . Copel GeT filed an administrative request for the exclusion of liability at ANEEL, which was denied, and subsequently, at 12.18.2017, it filed an ordinary lawsuit with request for advance protection with the Court, requesting the reversal of the agency's decision. On April 6, 2018, the Federal Court of the 1st Region fully granted the preliminary injunction applied for in the interlocutory appeal to suspend the enforcement of any burden or penalty to Copel as a result of noncompliance with the deadlines originally provided for in the Concession Agreement until a final unappelable ruling is rendered. The main action is pending judgment on merits. The contracted energy of the plant is 125 MW mean. For overdue periods the contract was fulfilled as described below: - From January 2015 to May 2016, with suspension of energy delivery by operation because of the injunction obtained by Management; - In June 2016, with partial reduction through a bilateral agreement and suspended remaining balance due to the court injunction; - From July 2016 to December 2018, with reduction of all supply contracts of the CCEARs - Energy Trading Agreement in the Regulated Environment, through a bilateral agreement and participation in the New Energy and Decrease Clearing Facility ("Mecanismo de Compensação de Sobras e Déficits de Energia Nova - MCSD-EN"); and - From January to March 2019, the firmed contracts in the regulated environment became effective again, however, energy supply continued suspended, in light of the injunction obtained. As of March 9, 2019, the plant started commercial production of its first generating unit. Due to the fact it is awaiting a decision on the merits of the lawsuit, in the period in delay of the plant, the Company recognized in the income for the years revenue limited to the financial covenants of the agreement and the regulatory rules, as well as the cost of energy to cover the contractual guarantee. 7.3 Expected credit losses Balance as of Additions / Reversal Balance as of Additions / Reversal Reclassi- Balance as of January 1, 2019 (Reversals) of write offs December 31, 2019 (Reversals) of write offs fication (a) December 31, 2020 Customers Residential 21,722 71,794 (51,692) 41,824 65,937 (60,365) - 47,396 Industrial 87,197 33,772 (23,015) 97,954 22,487 (31,575) - 88,866 Commercial 69,717 27,866 (26,658) 70,925 29,092 (31,294) - 68,723 Rural 3,810 1,499 (1,920) 3,389 4,788 (4,240) - 3,937 Public Entities 4,874 435 (419) 4,890 9 (1,815) - 3,084 Public lighting 120 (117) - 3 20 (15) - 8 Public service 199 145 (79) 265 124 (246) - 143 Unbilled 1,502 (322) - 1,180 409 - - 1,589 Adjustment to present value (2,883) 1,442 - (1,441) 791 - - (650) 186,258 136,514 (103,783) 218,989 123,657 (129,550) - 213,096 Concessionaires, Permission holder and Trading Companies CCEE (7.2) 119,665 - - 119,665 - - - 119,665 Concessionaries and permission holder 9,474 11,608 (657) 20,425 392 (284) - 20,533 129,139 11,608 (657) 140,090 392 (284) - 140,198 Telecommunications 3,879 13,292 (12,022) 5,149 3,609 (6,260) (2,498) - Gas distribution 12,112 1,063 (647) 12,528 238 (509) - 12,257 331,388 162,477 (117,109) 376,756 127,896 (136,603) (2,498) 365,551 (a) Reclassification to Assets classified as held for sale (Note 40).

8 CRC Transferred to the Parana

8 CRC Transferred to the Parana State Government	12 Months Ended
	Dec. 31, 2020
CRC Transferred To Parana State Government [Abstract]
CRC Transferred to the Parana State Government	8 CRC Transferred to the Paraná State Government The Company's Management and the Paraná State Government formalized on October 31, 2017 the fifth amendment to the agreement for renegotiation of the Account for Compensation of Income and Losses - CRC. The State of Paraná complied with the agreed terms and made the payments of the monthly interest until December 2017. With the end of the grace period, the State of Paraná has complied with the payments under the agreed terms, remaining 64 monthly installments to be paid. The contract balance is updated by the IGP-DI variation and interest of 6.65% p.a. 8.1 Changes in CRC Balance as of Monetary Balance as of Monetary Balance as of January 1, 2019 Interest variations Amortizations December 31, 2019 Interest variations Amortizations December 31, 2020 1,445,042 87,710 96,519 (278,586) 1,350,685 80,788 261,176 (300,025) 1,392,624 Current 219,236 287,789 Noncurrent 1,131,449 1,104,835 8.2 Maturity of noncurrent installments 2022 306,928 2023 327,341 2024 349,111 2025 121,455 1,104,835

9 Net Sectorial Financial Asset

9 Net Sectorial Financial Assets and Liabilities	12 Months Ended
	Dec. 31, 2020
Net Sectorial Financial Assets And Liabilities [Abstract]
Net Sectorial Financial Assets and Liabilities	9 Net Sectorial Financial Assets and Liabilities 9.1 Compositions of net sectorial financial assets and liabilities balances per tariff cycle 12.31.2020 12.31.2019 Current Noncurrent Current Noncurrent Sectorial financial assets - Electricity rate adjustment recoverable 2019 Portion A Electricity purchased for resale - CVA Energ - - 235,192 - Electricity purchased for resale - Itaipu - - 342,647 - Transport of energy using the transmission system - basic grid - - (47,214) - Transport of energy purchased from Itaipu - - 9,937 - System Service Charges - ESS - - (160,277) - Energy Development Account - CDE - - 98,722 - Proinfa - - 8,528 - Neutrality - - 29,690 - Overcontracting - - (116,673) - Hydrological risk - - (119,416) - Tariff refunds - - (43,538) - Other - - (448) - - - 237,150 - Sectorial financial assets - Electricity rate adjustment recoverable 2020 Portion A Electricity purchased for resale - CVA Energ - - 15,298 15,298 Electricity purchased for resale - Itaipu - - 225,340 225,340 Transport of energy using the transmission system - basic grid - - 30,126 30,126 Transport of energy purchased from Itaipu - - 7,227 7,227 System Service Charges - ESS - - (52,336) (52,336) Energy Development Account - CDE - - 27,103 27,103 Proinfa - - (30) (30) Neutrality - - 9,408 9,408 Offset of energy surplus/deficit under CCEAR bilateral contracts - - 20,096 20,096 Overcontracting - - (25,725) (25,725) Hydrological risk - - (113,872) (113,872) Tariff refunds - - (24,215) (24,216) - - 118,420 118,419 Sectorial financial assets - Electricity rate adjustment recoverable 2021 Portion A Electricity purchased for resale - CVA Energ (54,864) (54,864) - - Electricity purchased for resale - Itaipu 231,588 231,588 - - Transport of energy using the transmission system - basic grid 88,137 88,137 - - Transport of energy purchased from Itaipu 9,766 9,766 - - System Service Charges - ESS 11,266 11,266 - - Energy Development Account - CDE (903) (903) - - Proinfa (89) (89) - - Neutrality 27,923 27,923 - - Overcontracting 78,836 78,836 - - Hydrological risk (143,147) (143,147) - - Tariff refunds (76,144) (76,144) - - Other 1,096 1,096 - - 173,465 173,465 - - 173,465 173,465 355,570 118,419 12.31.2020 12.31.2019 Current Noncurrent Current Noncurrent Sectorial financial liabilities - Electricity rate adjustment recoverable 2020 Portion A Electricity purchased for resale - CVA Energ 9,675 - - - ESS (3,401) - - - CDE (66) - - - Proinfa 33 - - - Transport of energy using the transmission system - basic grid 603 - - - Transport of energy purchased from Itaipu 214 - - - Offset of energy surplus/deficit under CCEAR bilateral contracts 36,395 - - - Hydrological risk (187,817) - - - Tariff refunds (41,381) - - - Overcontracting (26,995) - - - Neutrality 21,419 - - - Other 2,612 - - - (188,709) - - - Sectorial financial liabilities - Tariff Review 2021 Financial components Tariff refunds - - - (102,284) - - - (102,284) (188,709) - - (102,284) 9.2 Changes in net sectorial financial assets and liabilities Balance as of Operating revenues Financial results Write-offs Covid Account Rate Balance as of 1-Jan-20 Constitution Amortization Updating flags 31-Dec-20 Portion A Electricity purchased for resale - Itaipu 793,327 893,581 (354,300) 28,197 (897,629) - 463,176 Electricity purchased for resale - CVA Energ 265,788 (242,246) (253,482) 1,076 164,804 (35,993) (100,053) Transport of energy using the transmission system - basic grid 13,038 265,030 48,154 1,715 (151,060) - 176,877 Transport of energy purchased from Itaipu 24,391 31,762 (10,503) 801 (26,705) - 19,746 ESS (264,949) (72,032) 169,396 (8,854) 249,724 (54,154) 19,131 CDE 152,928 56,608 (102,027) 5,065 (114,446) - (1,872) Proinfa 8,468 (21,615) (8,856) (181) 22,039 - (145) Other financial components Neutrality 48,506 95,870 (52,843) 187 (14,455) - 77,265 Offset of energy surplus/deficit under CCEAR bilateral contracts 40,192 75,917 (79,714) - - - 36,395 Hydrological risk (347,160) (444,291) 322,432 (5,092) - - (474,111) Tariff refunds (194,253) (83,514) 88,269 (4,171) - - (193,669) Overcontracting (168,123) 274,051 145,853 663 (101,788) (19,979) 130,677 Others (448) 6,927 (2,375) 700 - - 4,804 371,705 836,048 (89,996) 20,106 (869,516) (110,126) 158,221 Current assets 355,570 173,465 Noncurrent assets 118,419 173,465 Current liabilities - (188,709) Noncurrent liabilities (102,284) - The balance of Covid Account was received in full on July 31, 2020, as described in Note 1, item “a”. Balance as of Operating revenues Financial results Rate Balance as of January 1, 2019 Constitution Amortization Updating flags December 31, 2019 Portion A Electricity purchased for resale - Itaipu 886,243 533,057 (670,501) 44,528 - 793,327 Electricity purchased for resale - CVA Energ 626,891 358,200 (546,801) 29,909 (202,411) 265,788 Transport of energy using the transmission system - basic grid (30,514) 22,917 23,688 (3,053) - 13,038 Transport of energy purchased from Itaipu 23,250 19,531 (19,692) 1,302 - 24,391 ESS (481,972) (188,280) 427,177 (21,874) - (264,949) CDE 159,084 110,752 (127,190) 10,282 - 152,928 Proinfa 2,989 17,396 (12,636) 719 - 8,468 Other financial components Neutrality 123,028 (1,122) (74,698) 1,298 - 48,506 Offset of energy surplus/deficit under CCEAR bilateral contracts 5,237 80,385 (45,430) - - 40,192 CVA Angra III Adjustment 6,272 - (6,272) - - - Hydrological risk (319,033) (324,504) 304,197 (7,820) - (347,160) Tariff refunds (180,963) (89,327) 83,900 (7,863) - (194,253) Overcontracting (238,416) (22,166) 173,087 (5,774) (74,854) (168,123) Others 192 (905) 294 (29) - (448) 582,288 515,934 (490,877) 41,625 (277,265) 371,705 Current assets 421,184 355,570 Noncurrent assets 257,635 118,419 Noncurrent liabilities (96,531) (102,284)

10 Accounts Receivables - Conce

10 Accounts Receivables - Concessions	12 Months Ended
	Dec. 31, 2020
Accounts Receivable Concessions
Accounts Receivables - Concessions	10 Accounts Receivables - Concessions Restated Restated 12.31.2020 12.31.2019 01.01.2019 Power distribution service concession (10.1) 960,518 836,818 783,023 Piped gas distribution service concession (10.2) 189,416 324,385 322,259 Bonus from the grant of concession agreements under the quota system (10.3) 671,204 647,984 625,772 Generation concession agreements (10.4) 81,202 69,182 65,811 1,902,340 1,878,369 1,796,865 Current 4,515 4,545 4,180 Noncurrent 1,897,825 1,873,824 1,792,685 10.1 Power distribution service concession Balance as of January 1, 2019 783,023 Transfers from contract assets (Note 11.1) 28,987 Transfers from investments 348 Transfers to other receivables (assets held for disposal) (1,578) Fair value recognition 26,231 Incorporations (75) Loss on disposal (118) Balance as of December 31, 2019 836,818 Transfers from contract assets (Note 11.1) 86,154 Transfers to intangible assets (Note 18.1) (99) Transfers to other receivables (assets held for disposal) (7,428) Fair value recognition 45,187 Loss on disposal (114) Balance as of December 31, 2020 960,518 The distribution concession agreement amount is measured at fair value and its collection is assured by the Concession Grantor through an indemnity upon the return of these assets at the end of the concession period. 10.2 Piped gas distribution service concession Balance as of January 1, 2019 322,259 Transfers from contract assets (Note 11.2) 16,574 Transfers to intangible assets (Note 18.3) (24,835) Fair value recognition 10,415 Loss on disposal (28) Balance as of December 31, 2019 324,385 Transfers from contract assets (Note 11.2) 7,390 Transfers to intangible assets (Note 18.3) (154,483) Fair value recognition 12,154 Loss on disposal (30) Balance as of December 31, 2020 189,416 10.3 Bonus from the grant of concession agreements under the quota system Balance as of January 1, 2019 625,772 Transfers to electricity grid use charges - customers (69,192) Interest (Note 31) 91,404 Balance as of December 31, 2019 647,984 Transfers to electricity grid use charges - customers (71,087) Interest (Note 31) 94,307 Balance as of December 31, 2020 671,204 On January 5, 2016, Copel GeT entered into a 30-year concession agreement of HPP GPS, in accordance with Law No. 12,783/2013, with payment of the Bonus from the Grant - BO to the Concession Grantor, amounting to R$ 574,827, as per ANEEL Invitation to Bid 12/2015. The electric energy in 2016 was fully sold to the Regulated Contracting Environment - ACR under the Assured Power Quota System - CGF or “quota regime” and, as from 2017 to the end of the concession, in the proportion of 70% of the power in the ACR and 30% in the free environment - ACL. The amount of the bonus for the grant was recognized as a financial asset due to the Copel GeT’s unconditional right to receive the amount paid with inflation adjustment based on IPCA and interest during the concession period. 10.4 Power generation concession contract Balance as of January 1, 2019 65,811 Gain on remeasurement of the cash flow 426 Reversal of impairment (Note 32.4) 2,945 Balance as of December 31, 2019 69,182 Gain on remeasurement of the cash flow 1,518 Reversal of impairment (Note 32.4) 10,502 Balance as of December 31, 2020 81,202 Residual balance refers to the electricity generation assets of HPP GPS and HPP Mourão I. Copel GeT depreciated the plants until 2015, the expiration date of the concessions, and the remaining balances were reclassified to accounts receivable linked to the concession. Although the Granting Authority has not yet disclosed the form of payment of remuneration of the assets, Management's expectation about indemnification for these assets indicates the recoverability of the recorded balance, based on the remuneration methodology established by ANEEL. Copel GeT timely manifested to ANEEL its interest in receiving the indemnifiable amount. Formalization of proof of realization of the respective investments to ANEEL occurred on December 17, 2015. To prepare the information, the new replacement value methodology was used, as defined by ANEEL Normative Resolution No. 596/2013.

11 Contract Assets

11 Contract Assets	12 Months Ended
	Dec. 31, 2020
Contract assets [abstract]
Contract Assets	11 Contract assets Restated Restated 12.31.2020 12.31.2019 01.01.2019 Power distribution service concession (11.1) 1,114,961 844,284 640,500 Piped gas distribution service concession (11.2) 27,254 26,734 25,718 Power transmission concession (11.3) 4,350,582 3,919,635 3,520,838 5,492,797 4,790,653 4,187,056 Current 285,682 161,740 134,016 Noncurrent 5,207,115 4,628,913 4,053,040 11.1 Power distribution service concession contract Assets Special liabilities Total Balance as of January 1, 2019 664,755 (24,255) 640,500 Acquisitions 1,021,644 - 1,021,644 Customers contributions - (104,067) (104,067) Provision for legal claims added to the cost of the works 1,823 - 1,823 Transfers to intangible assets (Note 18.1) (771,844) 93,164 (678,680) Transfers to accounts receivable - concessions (Note 10.1) (33,075) 4,088 (28,987) Loss on disposal (7,949) - (7,949) Balance as of December 31, 2019 875,354 (31,070) 844,284 Acquisitions 1,391,267 - 1,391,267 Customers contributions - (112,689) (112,689) Provision for legal claims added to the cost of the works 1,522 - 1,522 Transfers to intangible assets (Note 18.1) (1,016,482) 105,116 (911,366) Transfers to accounts receivable - concessions (Note 10.1) (94,978) 8,824 (86,154) Loss on disposal (11,903) - (11,903) Balance as of December 31, 2020 1,144,780 (29,819) 1,114,961 Balance referring to the concessionaire's contractual right related to construction in progress to meet the needs of the concession. The costs of borrowings, financing and debentures capitalized in the year ended in December 31, 2020 totaled R$9,537, at average rate of 0.38% p.a. (R$ 6,838, at average rate of 0.28% p.a. in December 31, 2019, and R$ 5,435, at average rate of 0.26% p.a. in December 31, 2018). 11.2 Piped gas distribution service concession contract Balance as of January 1, 2019 25,718 Acquisitions 17,590 Transfers from/to accounts receivable - concessions (Note 10.2) (16,574) Balance as of December 31, 2019 26,734 Acquisitions 15,187 Transfers to intangible assets (Note 18.3) (7,277) Transfers to accounts receivable - concessions (Note 10.2) (7,390) Balance as of December 31, 2020 27,254 11.3 Transmission service concession contract Concession assets RBSE assets Total Balance as of January 1, 2019 2,166,757 1,354,081 3,520,838 Business combinations efects 117,942 - 117,942 Realization of gains/losses in business combinations 282 - 282 Transfers to electricity grid use charges - customers (176,724) (214,336) (391,060) Transfers to property, plant and equipment (3,353) - (3,353) Transfer of judicial deposits and litigation (313) - (313) Remuneration 280,630 177,961 458,591 Construction revenue 175,219 - 175,219 Construction income 2,892 - 2,892 Efficiency gain (11.3.1) 38,597 - 38,597 Balance as of December 31, 2019 2,601,929 1,317,706 3,919,635 Realization of gains/losses in business combinations 722 - 722 Transfers to electricity grid use charges - customers (312,120) (266,027) (578,147) Transfers to property, plant and equipment (613) - (613) Transfers from litigations (576) - (576) Remuneration 489,438 291,669 781,107 Construction revenue 255,578 - 255,578 Construction income 4,217 - 4,217 Loss from inefficiency (11.3.1) (7,654) - (7,654) Write-offs (23,687) - (23,687) Balance as of December 31, 2020 3,007,234 1,343,348 4,350,582 On June 30, 2020, Aneel published Homologatory Resolution 2,715, in which it ratified the result of the periodic review of the RAP of contract No. 060/2001 and on July 14, 2020 it issued Homologatory Resolution 2,725, which establishes the RAP for making available the facilities under the responsibility of the Company. In the process of the first tariff review of contract No. 060/2001, referring to the tariff cycles of 2018/2023 and which takes place every five years, operating costs, the cost of capital (WACC) and the remuneration base were reassessed, which resulted in a 10.16% RAP repositioning rate in relation to the previous cycle. Additionally, in relation to RBSE assets, Ratifying Resolution No. 2,715 set the tariff repositioning and included the “remuneration” in the portion of RAP, which had previously been provisionally excluded due to a judicial decision now overturned. Such amounts will be received from the fourth tariff cycle started in July 2020 until June 2025, including the addition of amounts not timely received due to the provisional effects of the injunction, which will be added in the next three RAP cycles beginning in July 2020 until June 2023. The impact of the tariff review on RBSE assets totaled R$ 122,027, recorded in 2020 operating revenue. 11.3.1 Gain (loss) due to efficiency or inefficiency in the implementation and operation of transmission infrastructure In the construction and operation of the transmission infrastructure, possible positive or negative impacts are expected due to delays and additional costs due to environmental issues, variation in costs, mainly with cables and structures when indexed to foreign currency, additional easement costs and land negotiations, potential earthworks for unforeseen events, early maturity of commercial transactions and RAP revision/readjustment according to the regulatory standards and contractual provisions. Changes in the original project that affect its profitability are recognized directly in the statement of income when incurred, except for the part of RAP related to the operation and maintenance performance of the assets that is recognized as the services are performed. 11.3.2 Assumptions adopted for the calculation of contract assets Concession assets RBSE assets Construction income 1.65% N/A Operating and maintenance margin 1.65% N/A Remuneration rate (a) 9,58% p.y. 9,54% p.y. Contract correction index IPCA (b) IPCA Annual RAP, according to Homologatory Resolution 415,455 279,406 Construction cost incurred up to 12.31.2020 of works in progress Contract 006/2016 - TL 525 kV Curitiba Leste - Blumenau 238,233 N/A (a)Average rate of contracts (b) Contract 075/2001 - LT 230 kV Bateias - Jaguariaíva, from Copel GET, and contract 002/2005 - LT 525 kV Ivaiporã - Londrina, from Uirapuru, are adjusted by the IGPM.

12 Other Receivables

12 Other Receivables	12 Months Ended
	Dec. 31, 2020
Other Receivables [Abstract]
Other Receivables	12 Other Receivables 12.31.2020 12.31.2019 Fair value in the purchase and sale of power (Note 35.2.12) 689,531 460,635 Services in progress (a) 260,348 228,593 Credits on purchases of gas (12.1) 120,515 142,941 CDE Transfer (12.2) 60,433 61,898 Advance payments to suppliers (b) 36,609 24,073 Advance payments to employees 17,785 20,427 Derivatives fair value - forward contract (Note 35.2.3 - b) 23,308 - Decommissioning in progress 36,855 21,238 Advance for severance estate 14,484 15,597 Tariff flag - CCRTB 7,194 19,545 Insurance entities - 24,574 Other receivables 92,583 69,103 1,359,645 1,088,624 Current 514,185 426,865 Noncurrent 845,460 661,759 CCRTB - Centralizing account of Tariff Flag Resources. (a) This item refers to services currently in progress within the Company, most of which are related to the Research and Development and Energy Efficiency programs, which upon conclusion are offset against the respective liability recorded for this purpose. (b) Advances to suppliers provided on contractual clauses. 12.1 Credits on purchases of gas - Compagás This balance refers to the gas acquisition of contracted and guaranteed volumes, higher than those actually withdrawn and used, and contains a future compensation clause. Compagás has the right to use and offset this gas over the term of the contract up to one year after the closure, currently established in December 2023. According to the contractual provisions and consumption perspectives, derived from the review of the projects and scenarios for the next years, Compagás estimates to fully offset the contracted volumes in the course of its operation. Contracts with Petrobras provide for the right to assign this asset. 12.2 CDE Transfer Balance in December 31, 2020 to be transferred by the CDE referring to tariff discounts on the tariffs applicable to users defined in accordance with article 13, item VII, of Law 10,438/2002 and Decree 7,891/2013. The amount transferred to Copel DIS for the period from June 2019 to May 2020, in accordance with Resolution 2,402/2018, was R$ 51,200 per month. As from June 2020, this amount was changed to R$ 47,005 per month, by Resolution 2,704, dated June 23, 2020, which approved the result of the last Annual Tariff Adjustment.

13 Taxes

13 Taxes	12 Months Ended
	Dec. 31, 2020
Taxes [Abstract]
Taxes	13 Taxes 13.1 Deferred income tax and social contribution Business Recognized Recognized Balance as of Recognized combination comprehensive Balance as of Recognized Reclassi- comprehensive Balance as of January 1, 2019 in income effect income December 31, 2019 in income fication (a) income December 31, 2020 Noncurrent assets Provisions for legal claims 573,177 (62,662) 6,237 - 516,752 (6,072) - - 510,680 Post-employment benefits 328,685 13,285 - 63,444 405,414 9,433 - 92,190 507,037 Impairment of assets 328,011 57,456 - - 385,467 (63,827) - - 321,640 Research and development and energy efficiency programs 154,491 10,840 - - 165,331 (12,833) - - 152,498 Expected credit losses 114,010 17,811 - - 131,821 (2,868) - - 128,953 Tax losses and negative tax basis 71,140 27,102 - - 98,242 144,493 - - 242,735 Social security contributions - injunction on judicial deposit 67,010 4,190 - - 71,200 3,340 - - 74,540 Provisons by performance andprofit sharing 30,548 21,567 - - 52,115 109,622 - - 161,737 Amortization - concession 53,339 5,005 - - 58,344 (11,135) - - 47,209 Concession contracts 23,606 (1,253) - - 22,353 (1,292) - - 21,061 Provision for energy purchases 155,570 (137,531) - - 18,039 - - - 18,039 (-) Reclassification (a) - (1,771) (81,971) - (83,742) Others 147,771 (4,512) - - 143,259 22,634 - - 165,893 2,047,358 (48,702) 6,237 63,444 2,068,337 189,724 (81,971) 92,190 2,268,280 (-) Noncurrent liabilities Concession contracts 613,658 99,199 (1,026) - 711,831 188,674 - - 900,505 Deemed cost 415,325 (34,116) - - 381,209 (30,718) - - 350,491 Derivative financial instruments 5,030 65,915 - - 70,945 46,737 - - 117,682 Escrow deposits monetary variation 64,167 (3,022) - - 61,145 1,981 - - 63,126 Accelerated depreciation 32,682 17,640 - - 50,322 25,633 - - 75,955 Transaction cost on borrowings and debentures 31,127 981 - - 32,108 (7,539) - - 24,569 (-) Reclassification (a) - 478 (3,243) - (2,765) Others 35,728 6,849 - - 42,577 (10,626) - - 31,951 1,197,717 153,446 (1,026) - 1,350,137 214,620 (3,243) - 1,561,514 Net 849,641 (202,148) 7,263 63,444 718,200 (24,896) (78,728) 92,190 706,766 Assets presented in the Statement of Financial Position 1,007,061 1,011,866 1,191,104 (-) Liabilities presented in the Statement of Financial Position (157,420) (293,666) (484,338) 13.1.1 Projection for realization of deferred income tax and social contribution: The projection of deferred tax credits realization recorded in noncurrent assets and liabilities is based on the realization period of each item of deferred assets and liabilities and tax losses, also based on projections of future results. These projections were evaluated by the Supervisory Board and approved by the Board of Directors on March 17, 2021. The criteria used for the realization of each item are related to the predictability of realization of the main value that gave rise to the temporary difference. When the expectation of realization of the item is difficult to predict, mainly because it is not under the control of the Company, such as provisions for litigation, the Company adopts history of realization to project its future realization. The realization of the amounts of income tax and social contribution losses follow the potential compensation considering future profits and the limit defined by the legislation. Following are the items that were the basis for the setup of the main credits, as well as their form of realization: - Provisions for post-employment benefits: realized as the payments are made to the Copel Foundation or reversed according to new actuarial estimates; - Provisions for legal claims: realized according to court decisions or by the reversal when the possible risk of the shares is reviewed; - Impairment of assets: realized through the amortization and/or depreciation of the impaired asset; - Provision for purchase of energy and charges of the main distribution and transmission grid: realized upon the effective obligation of the amounts provisioned or by the reversal of the provision; - Provisions for R&D and PEE: realized through the expenses incurred in the projects carried out; - Deemed cost: realized through the amortization and/or depreciation of the valued asset; - Amounts related to the concession agreement: realized over the term of the agreement; - Amounts related to tax losses and negative tax basis: recovered by offsetting against future taxable income; - Other amounts: realized when they meet the deductibility criteria provided for in tax legislation, or upon reversal of the recorded amounts. The projected realization of the deferred taxes is shown below: Assets Liabilities 2021 618,750 (108,316) 2022 223,243 (94,626) 2023 117,380 (110,243) 2024 80,174 (121,232) 2025 80,408 (92,592) 2026 to 2028 179,810 (257,513) 2029 to 2030 968,515 (776,992) 2,268,280 (1,561,514) 13.1.2 Unrecognized tax credits As of December 31, 2020, UEG Araucária did not recognize income tax and social contribution credits on income tax and social contribution tax losses in the amount of R$ 131,655 (R$ 34,567, as of December 31, 2019) for not having, at that moment, reasonable assurance of generation of future taxable profits sufficient to allow the utilization of these tax credits. 13.2 Other taxes recoverable and other tax obligations 12.31.2020 12.31.2019 Current assets Recoverable ICMS (VAT) 89,942 103,977 Recoverable PIS/Pasep and Cofins taxes (13.2.1) 1,474,119 98,942 Other recoverable taxes 1,262 2,141 1,565,323 205,060 Noncurrent assets Recoverable ICMS (VAT) 84,376 74,568 Recoverable PIS/Pasep and Cofins taxes (13.2.1) 4,421,403 213,667 Other recoverable taxes 33,719 33,776 4,539,498 322,011 Current liabilities ICMS (VAT) payable 201,138 179,662 PIS/Pasep and Cofins payable 179,133 125,197 IRRF on JSCP 43,950 117,807 Special Tax Regularization Program - Pert 50,565 49,310 Ordinary financing of taxes with the federal tax authorities - 18,063 Other taxes 15,822 11,029 490,608 501,068 Noncurrent liabilities Social security contributions - injunction on judicial deposit 209,145 209,747 Special Tax Regularization Program - Pert 408,738 447,897 Other taxes 4,600 4,470 622,483 662,114 13.2.1 Pis/Pasep and Cofins credit on ICMS On August 12, 2009, Copel DIS filed for writ of mandamus No. 5032406-35.2013.404.7000 with the 3rd Federal Court of Curitiba applying for the granting of an order to stop including ICMS in the PIS and COFINS tax base, as well as to authorize it to proceed with the administrative offsetting of the amounts collected more than due for such social contributions in the last five years. On June 16, 2020, a final unappealable ruling was handed down by the 2nd Panel of the Federal Regional Court of the 4th Region recognizing Copel DIS's right to exclude from the PIS and COFINS tax base the full amount of ICMS included in the energy supply and distribution invoices. The ruling also recognized that the limitation period, in this case, is of five years and that, therefore, Copel has the right to recover the amounts that have been paid during the five years preceding the filing of the writ of mandamus until the date of the final unappealable ruling. Considering the final and unappealable ruling , with a favorable decision for the company, the entry of economic benefits became probable and, thereafter, the asset became realizable. In view of these, Copel DIS recognized the updated tax credit in assets, which will be recovered using the following expedients: by offsetting against taxes payable within the 5-year statute of limitations period, and, if necessary, by receiving securities issued in connection with Federal Government debts (“precatórios”). Additionally, with the assistance of the opinion of its legal counsel, the Company concluded to record the liability to be refunded to consumers for the last 10 years of the credit, as from the date of the unappealable ruling, considering the current legislation, the statute of limitations period defined in the civil code and the jurisprudence of the courts. The refund of PIS and Cofins credits to consumers awaits the conclusion of discussions with Aneel regarding compensation mechanisms and criteria, based on the effective compensation of tax credits, which currently are under analysis by the Federal Revenue of Brazil On February 9, 2021, Aneel held a public consultation aimed at discussing how to return tax credits to consumers, as described in Note 29.2. Aneel's proposal, which is being discussed, provides for the return of the amounts through a rebate in the next tariff adjustments, within a period of up to five years. Aneel did not comment on the statutory period for returning credit to the consumer. Also, in relation to the potential future impacts of the adjustment of the effects, to be judged by the STF under RE No. 574,706/PR, the understanding of the Company, based on the opinion of its legal advisors, is that it is highly likely that the final decisions to the benefit of the taxpayers be maintained. The table below shows the impacts of these records on Copel's balance sheet and statement of income: 12.31.2020 Tax credit - principal 3,620,118 Tax credit - monetary update 2,035,636 Effect on assets 5,655,754 Pis and Cofins to be refunded to consumers (3,805,985) Tax liabilities - Pis/Pasep and Cofins payable on financial income (94,657) Income tax and social contribution (596,738) Effect on liabilities (4,497,380) EFFECT ON BALANCE SHEET 1,158,374 Net operating revenue 810,563 Financial income, net of pis and cofins 944,549 Income tax and social contribution (596,738) EFFECT ON THE INCOME STATEMENT 1,158,374 The amounts of Pis and Cofins of Copel DIS for the months of March to June 2020, which have not yet been paid when the action was concluded were remeasured with the effects from the court decision and reclassified to the liability account to be refunded to consumers.The table below shows, therefore, the total balance to be returned to consumers recorded in balance sheet: Pis and Cofins to be refunded to consumers 12.31.2020 Calculated until February 2020 3,805,985 Calculated from March to June 2020 121,838 3,927,823 Current 121,838 Noncurrent 3,805,985 The balance also contains the final and unappealable decision of the lawsuit records in which Compagás discussed the exclusion of ICMS from the PIS/Pasep and Cofins calculation basis. Due to this favorable ruling, Compagás recorded, on September 2019, the credit right of R$ 107,453 under Other Taxes Recoverable with corresponding entry of R$ 100,931 in operating revenue and R$ 6,522 in financial income. Part of these credits has already been recovered in 2020, so that the adjusted balance at December 31, 2020 is R$ 83,716. 13.2.2 Pis and Cofins under suspended enforceability On May 15, 2020, Copel Telecomunicações S.A. obtained a preliminary injunction favorable to the Company, suspending enforceability of a portion of Pis and Cofins, recognizing that ICMS should not be included in the tax base of these contributions. Accordingly, the Company has been suspending the payment of this complementary amount and provisioning the amounts until a final decision on the merits of the action is rendered. The balances of this liability, in the amount of R$2,965, are recorded in the Liabilities line associated with assets classified as held for sale. 13.3 Reconciliation of provision for income tax (IRPJ) and social contribution (CSLL) Restated Restated 12.31.2020 12.31.2019 12.31.2018 Income before IRPJ and CSLL 5,119,537 2,846,923 1,838,037 IRPJ and CSLL (34%) (1,740,643) (967,954) (624,933) Tax effects on: Equity in income 65,806 36,297 36,555 Interest on own capital 276,808 222,848 90,440 Dividends 243 192 497 Non deductible expenses (17,133) (15,274) (26,291) Tax incentives 28,572 17,804 13,860 Unrecognized income and social contribution tax loss carry-forwards (39,421) (48,892) (5,645) Difference between the calculation bases of deemed profit and taxable profit 121,242 72,175 (19,680) Others 19,161 7,143 17,486 Current IRPJ and CSLL (1,260,469) (416,687) (522,550) Deferred IRPJ and CSLL (24,896) (258,974) 51,384 Effective rate - % 25.1% 23.7% 25.6%

14 Prepaid Expenses

14 Prepaid Expenses	12 Months Ended
	Dec. 31, 2020
Prepaid Expenses [Abstract]
Prepaid Expenses	14 Prepaid Expenses 12.31.2020 12.31.2019 Program for incentive to alternative energy sources - Proinfa 22,408 18,504 Insurance premiums 14,453 11,693 Risk premium - GSF renegotiation (14.1) - 3,180 Others 170 318 37,031 33,695 Current 36,987 33,563 Noncurrent 44 132 14.1 Hydrological risk renegotiation (GSF) In accordance with Hydrological Risk Renegotiation Term and previously mentioned regulations, the companies acquired the right to partially recover the cost with MRE (GSF) in 2015, in the amount of R$ 33.55 per average MW of electricity for SP100 product class, based on the risk premium contracted by them (Note 4.9.2). The amounts originally recognized on the renegotiation of the hydrological risk were as follows: Power Plant Physical guarantee (Average MW) Eligible amount of energy (Average MW) Amortization period Grant extension period (intangible asset) Asset value to recover as renegotiation of GSF Value of prepaid expenses to amortize with future risk premium Value of intangible assets amortization over the concession period Mauá 100,827 97,391 01.01.2016 to 06.30.2020 not applicable 28,623 28,623 - Foz do Areia 576,000 226,705 01.01.2016 to 12.31.2016 05.24.2023 to 09.17.2023 66,628 17,222 49,406 Santa Clara and Fundão 135,400 134,323 01.01.2016 to 04.22.2019 10.25.2036 to 05.28.2037 39,369 30,326 9,043 458,419 134,620 76,171 58,449 A breakdown of these items as at December 31, 2020 and 2019 is presented below: Balance as of Balance as of Balance as of January 1, 2019 Amortization Transfers December 31, 2019 Amortization December 31, 2020 Risk premium - current asset 9,394 (9,394) 3,180 3,180 (3,180) - Risk premium - noncurrent asset 3,180 - (3,180) - - - Intangible 38,707 (7,040) - 31,667 (7,039) 24,628 51,281 (16,434) - 34,847 (10,219) 24,628 Risk premium to be amortized - prepaid expenses 12,574 3,180 - Grant extension period - intangible 38,707 31,667 24,628

15 Judicial Deposits

15 Judicial Deposits	12 Months Ended
	Dec. 31, 2020
Judicial Deposits [Abstract]
Judicial Deposits	15 Judicial Deposits 12.31.2020 12.31.2019 Taxes claims 346,659 351,402 Labor claims 72,263 85,187 Civil Civil 57,006 53,260 Easements 7,156 5,076 Customers 3,479 1,897 67,641 60,233 . Others 183 7,368 486,746 504,190

16 Investments

16 Investments	12 Months Ended
	Dec. 31, 2020
Investments Abstract
Investments	16 Investments 16.1 Changes in investments Balance as of Investment/ Capital Amorti- Dividends Other Balance as of January 1, 2020 Equity AFAC decrease zation and JSCP (a) December 31, 2020 Joint Ventures (16.3) Voltalia São Miguel do Gostoso I 110,099 (2,378) - - - - - 107,721 Voltalia São Miguel do Gostoso - direito de autorização 10,038 - - - (367) - - 9,671 Caiuá 78,312 (8,964) 26,014 - - - - 95,362 Integração Maranhense 138,716 13,672 - - - (3,807) - 148,581 Matrinchã 711,527 25,644 - - - (2,668) - 734,503 Guaraciaba 337,077 25,528 - - - (1,435) - 361,170 Paranaíba 173,973 29,708 - - - - - 203,681 Mata de Santa Genebra 573,357 48,594 39,479 - - - - 661,430 Cantareira 338,268 42,666 - - - (21,248) - 359,686 Solar Paraná - (115) 6,946 - - - - 6,831 2,471,367 174,355 72,439 - (367) (29,158) - 2,688,636 Associates Dona Francisca Energética (16.4) 28,423 9,674 - - - (9,950) - 28,147 Foz do Chopim Energética (16.4) 12,175 9,629 - - - (11,818) - 9,986 Dominó Holdings 246 (93) - - - - (153) - Other 10,155 (18) - (228) - - (7,969) 1,940 50,999 19,192 - (228) - (21,768) (8,122) 40,073 Investment property 813 - - - (5) - - 808 2,523,179 193,547 72,439 (228) (372) (50,926) (8,122) 2,729,517 (a) R$ 7,969 of Impairment of Estação Osasco Desenvolvimento Imobiliário SA, an associate of UEG Araucária, and R$ 153 of liquidation of Dominó. Investment/ Balance as of Advance for future Capital Amorti- Dividends Balance as of January 1, 2019 Equity capital increase decrease zation and JSCP Transfers December 31, 2019 Joint Ventures (16.3) Voltalia São Miguel do Gostoso I 110,568 (3,409) 2,940 - - - - 110,099 Voltalia São Miguel do Gostoso - direito de autorização 10,405 - - - (367) - - 10,038 Caiuá 74,639 4,800 - - - (1,127) - 78,312 Integração Maranhense 129,684 11,316 - - - (2,284) - 138,716 Matrinchã 673,216 48,634 - - - (10,323) - 711,527 Guaraciaba 356,941 18,312 - (34,300) - (3,876) - 337,077 Paranaíba 160,584 16,375 - - - (2,986) - 173,973 Mata de Santa Genebra 484,262 (41,716) 130,811 - - - - 573,357 Cantareira 317,523 28,031 - - - (7,286) - 338,268 2,317,822 82,343 133,751 (34,300) (367) (27,882) - 2,471,367 Associates Dona Francisca Energética (16.4) 29,144 9,853 - - - (10,574) - 28,423 Foz do Chopim Energética (16.4) 8,227 13,924 - - - (9,976) - 12,175 Dominó Holdings 2,442 (280) - (735) - (1,181) - 246 Other 9,115 917 123 - - - - 10,155 48,928 24,414 123 (735) - (21,731) - 50,999 Investment property 1,342 - - - (5) - (524) 813 Advance for future capital future capital increase 142 - 133,597 - - - (133,739) - 2,368,234 106,757 267,471 (35,035) (372) (49,613) (134,263) 2,523,179 16.2 Subsidiaries with non-controlling interests 16.2.1 Summarized financial information Compagás Elejor UEG Araucária 12.31.2020 12.31.2019 12.31.2018 12.31.2020 12.31.2019 12.31.2018 12.31.2020 12.31.2019 12.31.2018 ASSETS 749,434 904,993 675,286 705,233 625,154 652,175 554,079 421,533 436,137 Current assets 245,028 313,896 204,725 165,150 80,079 80,990 392,775 80,788 33,573 Noncurrent assets 504,406 591,097 470,561 540,083 545,075 571,185 161,304 340,745 402,564 LIABILITIES 749,434 904,993 675,286 705,233 625,154 652,175 554,079 421,533 436,137 Current liabilities 173,144 236,190 133,769 95,465 85,647 124,880 309,265 91,066 42,185 Noncurrent liabilities 81,230 110,475 106,900 596,278 496,648 473,318 6,603 14,727 23,290 Equity 495,060 558,328 434,617 13,490 42,859 53,977 238,211 315,740 370,662 STATEMENT OF INCOME Operating revenues 535,206 866,884 588,532 194,849 218,421 293,942 589,909 52,216 524 Operating costs and expenses (452,495) (662,306) (515,594) (67,323) (86,237) (89,931) (647,516) (131,596) (94,970) Financial results (764) 43,186 (2,411) (172,049) (92,728) (89,301) 203 832 2,275 Equity in earnings of investees - - - - - - - 916 - Income tax and social contribution (22,967) (74,791) (10,909) 15,154 (13,331) (38,379) (19,920) (22,703) 16,316 Net income (loss) 58,980 172,973 59,618 (29,369) 26,125 76,331 (77,324) (100,335) (75,855) Other comprehensive income (343) (1,277) 187 - - - (205) 132 - Total comprehensive income 58,637 171,696 59,805 (29,369) 26,125 76,331 (77,529) (100,203) (75,855) STATEMENTS OF CASH FLOWS Cash flows from operational activities 101,708 54,760 66,017 22,097 51,839 127,108 23,491 (57,585) (26,980) Cash flows from investment activities (17,120) (17,531) (15,961) (208) (314) (2,659) 1,317 (1,945) (2,768) Cash flows from financing activities (115,625) 14,312 (43,980) (8,151) (56,533) (119,468) 32,879 45,133 - TOTAL EFFECTS ON CASH AND CASH EQUIVALENTS (31,037) 51,541 6,076 13,738 (5,008) 4,981 57,687 (14,397) (29,748) Cash and cash equivalents at the beginning of the year 141,696 90,155 84,079 37,878 42,886 37,905 7,119 21,516 51,264 Cash and cash equivalents at the end of the year 110,659 141,696 90,155 51,616 37,878 42,886 64,806 7,119 21,516 CHANGE IN CASH AND CASH EQUIVALENTS (31,037) 51,541 6,076 13,738 (5,008) 4,981 57,687 (14,397) (29,748) The loss recorded at Elejor is due to the monetary update on Accounts payable linked to the concession, which increased significantly as a result of the IGPM increase, as shown in Note 26. 16.2.2 Changes in equity attributable to non-controlling shareholders Participation in capital stock Compagás Elejor UEG Araucária 18,8% Total Balance as of January 1, 2018 194,901 18,518 89,242 302,661 Net income (loss) 29,213 22,899 (15,171) 36,941 Other comprehensive income 91 - 63 154 Dividends (11,243) (25,224) - (36,467) Balance as of December 31, 2018 212,962 16,193 74,134 303,289 Net income (loss) 84,758 7,838 (19,673) 72,923 Other comprehensive income (626) - 25 (601) Additional dividends proposed - (3,335) - (3,335) Dividends (23,514) (7,838) - (31,352) Gain with interest variation in Subsidiary - - 4,874 4,874 Balance as of December 31, 2019 273,580 12,858 59,360 345,798 Net income (loss) 28,898 (8,812) (14,538) 5,548 Other comprehensive income (168) - (39) (207) Additional dividends proposed (51,799) - - (51,799) Dividends (7,933) - - (7,933) Balance as of December 31, 2020 242,578 4,046 44,783 291,407 16.3 Summarized information on the main joint ventures Voltalia Caiuá Integração Maranhense Matrinchã Guaraciaba Paranaíba Mata de Santa Genebra Cantareira Balance as of December 31, 2020 ASSETS 222,038 267,425 475,734 2,357,028 1,269,378 1,687,613 2,712,737 1,567,577 Current assets 3,623 31,048 59,709 261,168 165,063 179,229 340,382 165,816 Cash and cash equivalents 3,579 6,871 12,696 46,198 25,565 20,820 61,171 34,435 Other current assets 44 24,177 47,013 214,970 139,498 158,409 279,211 131,381 Noncurrent assets 218,415 236,377 416,025 2,095,860 1,104,315 1,508,384 2,372,355 1,401,761 . LIABILITIES 222,038 267,425 475,734 2,357,028 1,269,378 1,687,613 2,712,737 1,567,577 Current liabilities 2,199 18,995 51,926 192,512 86,163 78,981 158,350 63,206 Financial liabilities - 7,392 13,180 80,141 28,741 62,143 104,308 41,314 Other current liabilities 2,199 11,603 38,746 112,371 57,422 16,838 54,042 21,892 Noncurrent liabilities - 53,816 120,579 665,528 446,133 777,279 1,234,165 770,317 Financial liabilities - 42,864 65,624 612,413 446,801 545,200 1,215,988 489,784 Other noncurrent liabilities - 10,952 54,955 53,115 (668) 232,079 18,177 280,533 Equity 219,839 194,614 303,229 1,498,988 737,082 831,353 1,320,222 734,054 . STATEMENT OF INCOME Net operating income - 17,927 31,418 328,171 109,978 478,147 364,070 196,039 Operating costs and expenses (66) (34,584) 11,706 (160,795) (8,317) (18,801) (125,569) (23,533) Financial results 32 (3,389) (5,229) (71,164) (38,883) (48,184) (91,947) (40,630) Equity in income of subsidiaries (4,893) - - - - - - - Income tax and social contribution - 1,752 (9,991) (30,178) (22,084) (125,646) (49,560) (44,805) Net income (loss) (4,927) (18,294) 27,904 66,034 40,694 285,516 96,994 87,071 Other comprehensive income - - - - - - - - Total comprehensive income (4,927) (18,294) 27,904 66,034 40,694 285,516 96,994 87,071 Investment interest - % 49.0 49.0 49.0 49.0 49.0 24.5 50.1 49.0 Investment book value 107,721 95,362 148,581 734,503 361,170 203,681 661,430 359,686 Voltalia Caiuá Integração Maranhense Matrinchã Guaraciaba Paranaíba Mata de Santa Genebra Cantareira Balance as of December 31, 2019 ASSETS 226,898 271,409 486,305 2,295,925 1,318,517 1,625,008 2,482,326 1,496,577 Current assets 3,664 30,472 59,466 301,722 150,875 178,558 268,381 182,971 Cash and cash equivalents 1,494 3,968 6,570 85,293 44,805 20,338 48,395 60,252 Other current assets 2,170 26,504 52,896 216,429 106,070 158,220 219,986 122,719 Noncurrent assets 223,234 240,937 426,839 1,994,203 1,167,642 1,446,450 2,213,945 1,313,606 . LIABILITIES 226,898 271,409 486,305 2,295,925 1,318,517 1,625,008 2,482,326 1,496,577 Current liabilities 2,206 28,892 77,116 166,430 84,863 104,065 129,810 72,907 Financial liabilities - 7,584 13,468 82,665 33,102 60,399 93,643 48,619 Other current liabilities 2,206 21,308 63,648 83,765 51,761 43,666 36,167 24,288 Noncurrent liabilities - 82,699 126,095 677,398 545,742 810,847 1,208,089 733,326 Financial liabilities - 49,958 78,350 624,779 461,353 580,451 1,208,089 507,775 Other noncurrent liabilities - 32,741 47,745 52,619 84,389 230,396 - 225,551 Equity 224,692 159,818 283,094 1,452,097 687,912 710,096 1,144,427 690,344 . STATEMENT OF INCOME Net operating income - 25,180 44,264 250,188 111,912 198,573 357,522 138,259 Operating costs and expenses (111) (5,481) (5,672) (70,886) (29,067) (30,560) (384,228) (5,360) Financial results 146 (4,557) (6,594) (59,794) (42,548) (54,154) (99,186) (46,190) Equity in income of subsidiaries (7,080) - - - - - - - Income tax and social contribution (5) (5,348) (8,904) (33,103) (2,926) (47,024) 42,627 (29,498) Net income (loss) (7,050) 9,794 23,094 86,405 37,371 66,835 (83,265) 57,211 Other comprehensive income - - - - - - - - Total comprehensive income (7,050) 9,794 23,094 86,405 37,371 66,835 (83,265) 57,211 Investment interest - % 49.0 49.0 49.0 49.0 49.0 24.5 50.1 49.0 Investment book value 110,099 78,312 138,716 711,527 337,077 173,973 573,357 338,268 Voltalia Caiuá Integração Maranhense Matrinchã Guaraciaba Paranaíba Mata de Santa Genebra Cantareira Balance as of December 31, 2018 ASSETS 227,867 261,951 465,801 2,199,434 1,295,670 1,574,846 2,365,160 1,443,693 Current assets 2,344 26,471 47,347 326,557 229,693 165,072 202,253 161,328 Cash and cash equivalents 205 1,128 1 116,634 136,191 13,931 19,568 301 Other current assets 2,139 25,343 47,346 209,923 93,502 151,141 182,685 161,027 Noncurrent assets 225,523 235,480 418,454 1,872,877 1,065,977 1,409,774 2,162,907 1,282,365 . LIABILITIES 227,867 261,951 465,801 2,199,434 1,295,670 1,574,846 2,365,160 1,443,693 Current liabilities 2,216 24,955 73,856 137,627 79,701 104,599 124,606 60,964 Financial liabilities - 7,615 13,228 70,192 27,950 55,968 33,964 46,329 Other current liabilities 2,216 17,340 60,628 67,435 51,751 48,631 90,642 14,635 Noncurrent liabilities - 84,672 127,284 687,897 487,520 814,798 1,273,962 734,724 Financial liabilities - 57,028 91,342 683,316 482,125 612,854 934,650 532,179 Other noncurrent liabilities - 27,644 35,942 4,581 5,395 201,944 339,312 202,545 Equity 225,651 152,324 264,661 1,373,910 728,449 655,449 966,592 648,005 . STATEMENT OF INCOME Net operating income - 25,129 42,379 272,103 181,665 (14,331) 514,591 195,441 Operating costs and expenses (103) (4,785) (7,732) (47,771) (27,273) (23,244) (462,839) (60,529) Financial results (170) (5,017) (7,817) (61,910) (35,036) (57,977) (59,507) (58,402) Equity in income of subsidiaries (7,815) - - - - - - - Income tax and social contribution - (5,053) (7,974) (59,544) (47,273) 28,163 2,685 (26,379) Net income (loss) (8,088) 10,274 18,856 102,878 72,083 (67,389) (5,070) 50,131 Other comprehensive income - - - - - - - - Total comprehensive income (8,088) 10,274 18,856 102,878 72,083 (67,389) (5,070) 50,131 Investment interest - % 49.0 49.0 49.0 49.0 49.0 24.5 50.1 49.0 Investment book value 110,568 74,639 129,684 673,216 356,941 160,584 484,262 317,523 As of December 31, 2020, Copel's share of commitments assumed relating to its joint ventures is equivalent to R$ 632 (R$ 5,936 as of December 31, 2019 and R$ 81,263 as of December 31, 2018 ) and of contingent liabilities is equivalent to R$ 227,467 (R$ 89,688 as of December 31, 2019 and R$ 40,324 as of December 31, 2018). The loss assessed at Caiuá in 2020 is mainly due to the recording of a provision for contingencies, in the amount of R$ 28,891, resulting from an arbitration proceeding in which the controversial amount of economic and financial rebalancing of the construction contract is discussed. 16.4 Summarized information of the main associates Dona Francisca Foz do Chopim 12.31.2020 12.31.2019 12.31.2018 12.31.2020 12.31.2019 12.31.2018 ASSETS 128,798 130,883 134,141 62,635 61,635 106,736 Current assets 14,562 13,406 12,493 33,378 31,054 73,786 Noncurrent assets 114,236 117,477 121,648 29,257 30,581 32,950 . LIABILITIES 128,798 130,883 134,141 62,635 61,635 106,736 Current liabilities 4,452 4,344 4,231 34,723 2,354 57,603 Noncurrent liabilities 2,119 3,118 3,361 - 25,243 26,133 Equity 122,227 123,421 126,549 27,912 34,038 23,000 . STATEMENT OF INCOME Net operating income 70,314 70,717 70,716 55,740 56,929 46,479 Operating costs and expenses (26,171) (25,957) (25,268) (21,260) (16,278) (2,020) Financial income (expense) 208 475 366 (5,527) 621 (638) Income tax and social contribution (2,343) (2,454) (2,446) (2,035) (2,346) (6,880) Net income 42,008 42,781 43,368 26,918 38,926 36,941 Other comprehensive income - - - - - - Total comprehensive income 42,008 42,781 43,368 26,918 38,926 36,941 Investment interest - % 23.0303 23.0303 23.0303 35.77 35.77 35.77 Investment book value 28,147 28,423 29,144 9,986 12,175 8,227 29144 8227 As of December 31, 2020, Copel's interest in the contingent liabilities of its associates is equivalent to R$ 1,428 (R$ 78,793 as of December 31, 2019 and R$ 61,341 as of December 31, 2018).

17 Property, Plant and Equipmen

17 Property, Plant and Equipment	12 Months Ended
	Dec. 31, 2020
Property, plant and equipment [abstract]
Property, Plant and Equipment	17 Property, Plant and Equipment The Company records assets used in administrative and commercial facilities for generation of electric power and telecommunication services in property, plant and equipment account. Investments in electric power transmission and distribution and in piped gas distribution are recorded in contract assets, financial assets and/or intangible assets accounts as per IAS 38, IFRS 15 and IFRIC 12. (Notes 4.4, 4.5 and 4.9). Upon initial adoption of IFRS, property, plant and equipment were measured at fair value with recognition of their deemed cost. Under the regulation relating to the concession of public electric energy services, the assets and facilities used mostly in the generation of power are attached to these services and cannot be withdrawn, sold, assigned, or mortgaged without the prior written consent of the regulatory agency. ANEEL Resolution No. 691/2015, however, regulates the release of assets from the concessions of the Public Electric Power Service, granting prior authorization to release the property and other fixed assets not usable by the concession when they are destined for sale, and also determining that the sales proceeds less respective charges be deposited in a restricted bank account to be invested in the concession. 17.1 Property, plant and equipment by asset class Accumulated Accumulated Cost depreciation 12.31.2020 Cost depreciation 12.31.2019 In service Reservoirs, dams and aqueducts 8,081,989 (4,600,598) 3,481,391 8,082,238 (4,405,546) 3,676,692 Machinery and equipment 7,644,171 (2,619,939) 5,024,232 8,875,458 (2,871,568) 6,003,890 Buildings 1,968,591 (1,096,016) 872,575 1,962,033 (1,054,009) 908,024 Land 490,177 (38,269) 451,908 490,071 (27,651) 462,420 Vehicles and aircraft 44,617 (42,725) 1,892 47,960 (44,876) 3,084 Furniture and tools 22,314 (15,498) 6,816 22,415 (14,466) 7,949 (-) Impairment (17.5) (925,521) - (925,521) (961,177) - (961,177) (-) Impairment (17.6) (27,928) - (27,928) (81,322) - (81,322) (-) Special Obligations (332) 81 (251) (78) 35 (43) 17,298,078 (8,412,964) 8,885,114 18,437,598 (8,418,081) 10,019,517 In progress Cost 734,507 - 734,507 700,172 - 700,172 (-) Impairment (17.5) (120,308) - (120,308) (122,261) - (122,261) (-) Impairment (17.6) (3,853) - (3,853) (5,325) - (5,325) 610,346 - 610,346 572,586 - 572,586 17,908,424 (8,412,964) 9,495,460 19,010,184 (8,418,081) 10,592,103 17.2 Changes in property, plant and equipment Balance as of Additions / Loss on Balance as of January 1, 2020 Depreciation disposal Transfers December 31, 2020 In service Reservoirs, dams and aqueducts 3,676,692 - (195,062) - (239) 3,481,391 Machinery and equipment 6,003,890 - (431,088) (86,550) 160,968 5,647,220 Buildings 908,024 - (42,593) (83) 7,227 872,575 Land 462,420 - (10,617) (2) 107 451,908 Vehicles and aircraft 3,084 - (1,171) (123) 102 1,892 Furniture and tools 7,949 - (1,559) (238) 664 6,816 (-) Impairment (17.5) (961,177) 35,656 - - - (925,521) (-) Impairment (17.6) (81,322) 53,394 - - - (27,928) (-) Special Obligations (43) - 46 - (254) (251) (-) Reclassification (a) - - - - (622,988) (622,988) 10,019,517 89,050 (682,044) (86,996) (454,413) 8,885,114 In progress Cost 700,172 273,823 - (8,126) (170,053) 795,816 (-) Impairment (17.5) (122,261) 1,953 - - - (120,308) (-) Impairment (17.6) (5,325) 1,472 - - - (3,853) (-) Reclassification (a) - - - - (61,309) (61,309) 572,586 277,248 - (8,126) (231,362) 610,346 10,592,103 366,298 (682,044) (95,122) (685,775) 9,495,460 (a) Reclassification to Assets classified as held for sale (Note 40). Balance as of Additions / Loss on Balance as of January 1, 2019 Depreciation disposal Transfers December 31, 2019 In service Reservoirs, dams and aqueducts 2,426,474 - (188,334) (42) 1,438,594 3,676,692 Machinery and equipment 2,974,142 - (409,571) (141,902) 3,581,221 6,003,890 Buildings 479,207 - (52,330) - 481,147 908,024 Land 357,102 - (9,466) (463) 115,247 462,420 Vehicles and aircraft 5,766 - (3,482) (128) 928 3,084 Furniture and tools 9,415 - (2,007) (9) 550 7,949 (-) Impairment (3,489) 61,112 - - (1,100,122) (1,042,499) (-) Special Obligations (41) - 8 - (10) (43) 6,248,576 61,112 (665,182) (142,544) 4,517,555 10,019,517 In progress Cost 5,789,780 551,162 - (15,540) (5,625,230) 700,172 (-) Impairment (1,197,693) (30,015) - - 1,100,122 (127,586) 4,592,087 521,147 - (15,540) (4,525,108) 572,586 10,840,663 582,259 (665,182) (158,084) (7,553) 10,592,103 Due to the startup of HPP Colíder, HPP Baixo Iguaçu and Cutia and Bento Miguel Wind Complexes in 2019, the assets and impairment recorded for these projects were transferred from assets in progress to assets in service. 17.3 Costs of loans, financing and debentures capitalized The costs of loans and financing and debentures capitalized in fixed assets during the year ended in December 31, 2020 of R$ 1,046, at an average rate of 0.04% p.a. (R$ 4,295, at an average rate of 0.11% p.a. in December 31, 2019, and R$ 4,229, at an average rate of 0.11% p.a. in December 31, 2018). 17.4 Joint operations - consortiums The amounts recorded under property, plant and equipment referring to the share of interest of Copel GeT in consortiums are shown below: Joint operations Share Copel GeT (%) Annual average depreciation 12.31.2020 12.31.2019 HPP Gov. Jayme Canet Júnior (Mauá) - Consórcio Energético Cruzeiro do Sul 51.0 In service 859,917 859,917 (-) Accumulated depreciation 3.43 (235,454) (206,000) In progress 24,827 16,789 649,290 670,706 HPP Baixo Iguaçu 30.0 In service 691,833 692,593 (-) Accumulated depreciation 3.29 (41,803) (19,038) In progress 50,114 49,240 700,144 722,795 1,349,434 1,393,501 17.5 Impairment of generation segment assets Cash-generating units of the generation segment were tested for impairment based on previous evidence of impairment, assumptions representing the best estimates of the Company's management, the methodology provided for in Technical Pronouncement IAS 36 and measurement of value in use. The calculation of the value in use was based on discounted operating cash flows over the time of concessions, maintaining the Company’s current commercial conditions. The rate used to discount the cash flows was set considering the WACC (Weighted Average Cost of Capital) methodology and CAPM (Capital Asset Pricing Model) methodology for the generation business, considering usual market parameters. Internal references such as the budget approved by the Company, historical or past data, updating of the timeframe of work and amount of investments for projects in course support the design of key assumptions by Company Management. In the same framework, external references such as level of consumption of electric power and the availability of water resources support the key information about estimated cash flows. In particular, 2020 proved to be an atypical year in terms of growth of the economic activity in the country, as well as in the world, due to the Covid-19 pandemic and, consequently, due to measures to contain it, which directly had an impact on trade, industry and services. A number of assumptions used by Company Management when determining future cash flows can be affected by uncertain events, which, in turn, may give rise to variation in results. Changes in the political and economic model, for example, may lead to upward trend when projecting country risk-rating, increasing the discount rates used in tests. The tests considered the following key assumptions: · Growth compatible with historical data and perspective for the Brazilian economy growth; · Updating specific after-tax discount rates for the segment tested, obtained through the methodology usually applied by the market, taking into consideration the weighted average cost of capital; · Projected revenue in accordance with the agreements in force and future market expectations, without any expectation for renewal of concession/authorization; and · Expenses broken into cash generating units, projected in view of the budget approved by the Company. The Company considered all its generation projects as independent cash generating units. The projects with impairment balances recorded at December 31, 2020 are the following: Property, Plant and Equipment Value in use Cost Depreciation Impairment HPP Colíder 2,477,374 (167,432) (683,193) 1,626,749 UEGA 701,736 (441,827) (138,777) 121,132 Consórcio Tapajós (a) 14,464 - (14,464) - Power plants in Paraná 984,823 (85,790) (209,395) 689,638 4,178,397 (695,049) (1,045,829) 2,437,519 (a) Project under development The table below shows the changes in the impairment for the years: Balance as of Impairment Transfer Balance as of Impairment Balance as of January 1, 2019 December 31, 2019 December 31, 2020 In service UHE Colíder - (45,547) (731,747) (777,294) 94,101 (683,193) Wind power complex Cutia - 114,144 (168,248) (54,104) 54,104 - Wind power complex Bento Miguel - 87,370 (87,370) - - - UEGA - - - - (138,777) (138,777) Power plants in Paraná (3,489) (13,534) (112,756) (129,779) 26,228 (103,551) (3,489) 142,433 (1,100,121) (961,177) 35,656 (925,521) In progress HPP Colíder (731,265) (482) 731,747 - - - Wind power complex Cutia (167,875) (373) 168,248 - - - Wind power complex Bento Miguel (84,621) (2,749) 87,370 - - - Consórcio Tapajós (14,464) - - (14,464) - (14,464) Power plants in Paraná (199,468) (21,085) 112,756 (107,797) 1,953 (105,844) (1,197,693) (24,689) 1,100,121 (122,261) 1,953 (120,308) (1,201,182) 117,744 - (1,083,438) 37,609 (1,045,829) 17.5.1 UHE Colíder In December 2020, the calculation of value in use took into account the Company's assumptions and budgets and the update of the discount rate after taxes in constant currency of 5,70% p.a. (in 2019, 5.45% p.a.), which derives from the WACC methodology for the electricity generation segment. Depreciating since its entry into commercial operation in March 2019, the reduction in the balance of net assets enabled partial reversal of the balance provisioned for losses. 17.5.2 Cutia Complex and Bento Miguel Complex In December 2020, the calculation of value in use took into account the Company's assumptions and budgets and the update of the discount rate after taxes in constant currency of 7.08% p.a. (in 2019, 7.24% p.a.) which derives from the WACC methodology for the electric power generation segment, adjusted for the specific taxation condition of each project. Due to the revision of the discount rate, operating costs and future investments, the entire balance provisioned for losses was reversed. 17.5.3 UEG Araucária In December 2020, the calculation of the value in use considered: i) the Company's assumptions and budgets; ii) assumptions for generation, delivery and variable costs; and iii) adjustment of discount rate after taxes in constant currency by 7.87% p.a. (in 2019, 7.76 p.a.), which derive from the WACC methodology for the electric power generation segment, plus additional risk associated with the variation in revenue. By reviewing the assumptions, the budget and the discount rate, the provision for losses was recognized. 17.5.4 Plants in the Paraná state Figueira Thermoelectric Plant Other plants: 17.5.5 Cash-generating units that have suffered no impairment Plants that have suffered no impairment have recoverable amount higher than the carrying amount of property, plant and equipment. The following table shows the percentage by which the recoverable amount (“RA”) exceeds the carrying amount (“CA”) of fixed assets. In addition, the Company carried out a sensitivity analysis, increasing the discount rate shown below by 5% and 10% to assess the risk of impairment of each plant. Unidade geradora de caixa Discount VR/VC-1 VR/VC-1 Impairment Risk rate VR/VC-1 (5% Variation) (10% Variation) Wind power Assets São Bento Complex (a) 7.08% 56.04% 51.92% 47.97% - Brisa I Complex(b) 7.08% 46.29% 42.44% 38.76% - Brisa II Complex(c) 7.08% 50.09% 45.45% 41.03% - Bento Miguel Complex (d) 7.08% 5.79% 2.35% -0.91% 7,254 Hydric Assets Foz do Areia 5.70% 153.23% 152.06% 150.91% - Segredo 5.70% 189.54% 185.33% 181.21% - Caxias 5.70% 138.68% 134.97% 131.33% - Guaricana 5.70% 27.44% 26.28% 25.14% - Chaminé 5.70% 68.26% 66.71% 65.17% - Apucaraninha 5.70% 38.39% 37.10% 35.82% - Chopim I 5.70% 158.47% 152.77% 147.25% - Mauá 5.70% 88.81% 84.52% 80.38% - Cavernoso 5.70% 754.19% 740.28% 726.70% - Cavernoso II 5.70% 13.53% 10.72% 8.01% - Bela Vista 5.70% 44.01% 38.29% 32.89% - Elejor 5.00% 67.71% 65.01% 59.54% - (a) Contemplates the GE Boa Vista, GE Farol, GE Olho D’Água e GE São Bento do Norte wind farms. (b) Contemplates theNova Asa Branca I, Nova Asa Branca II, Nova Asa Branca III e Nova Eurus IV wind farms. (c) Contemplates theSanta Maria, Santa Helena e Ventos de Santo Uriel wind farms. (d) Contemplates São Bento do Norte I, São Bento do Norte II, São Bento do Norte III, São Miguel I, São Miguel II andGE São Miguel III wind farms. 17.6 Property, Plant and Equipment of Copel Telecomunicações The Company's Management continuously monitors the business environment of the telecommunications segment, paying particular attention to factors such as the increased competitiveness of the sector, the high degree of investment required to maintain its customer base and the expected return from this segment. The reversal of impairment in the period occurred due to depreciation, write-offs and recovery of provisioned equipment, referring to assets for which estimated losses were recorded. However, both the reversal of impairment and the write-offs are shown within the line of net income from discontinued operations, as a result of the divestment process of Copel Telecomunicações and the reclassifications carried out in compliance with accounting standards, as described in Note 40. 17.7 New plants under construction 17.7.1 SHPP Bela Vista With estimated investment of R$ 220,000, this small hydroelectric power plant (SHPP), with installed capacity of 29.81 MW and physical guarantee of 18.4 MW mean, will be built on the Chopim River, in the municipalities of São João and Verê, located in the southwest region of the state of Paraná. The participation in the A-6 auction held on August 31, 2018 led to sale of 14.7 MW mean in regulated contracts at the original price of R$ 195.70/MWh. The energy sale contracts provide for beginning of energy supply on January 1, 2024, with a 30-year term and annual adjustment by reference to IPCA variation. The works started in August 2019, and the three-generating units are expected to start operating in the first half of 2021. 17.7.2 Jandaíra Wind Complex With estimated investment of R$ 411,610 this wind farm, with installed capacity of 90.1 MW and physical guarantee of 47.6 MW mean, will be built in the municipalities of Pedra Preta and Jandaíra, in the state of Rio Grande do Norte. The participation in the new power generation auction A-6, held on October 18, 2019, led to sale of 14.4 MW mean in regulated contracts at the original price of R$ 98.00/MWh. The energy sale contracts provided for beginning of energy supply on January 1, 2025, with a 20-year term and annual adjustment by reference to IPCA variation. In all, 26 wind turbines will be installed, divided into four wind farms, and a substation and a 16 km transmission line will also be built next to the farms to drain the electricity to be generated for the National Interconnected System (SIN). With all the necessary licenses in place, civil works began in the first week of January 2021, and the wind farm is expected to start operating between May 2022 and July 2022, on a phased basis, by wind turbine. 17.8 Depreciation rates Depreciation rates Depreciation rates (%) 12.31.2020 12.31.2019 12.31.2018 Average generation segment rates (Note 17.8.1) General equipment 6.26 6.33 6.25 Machinery and equipment 3.39 3.67 3.56 Generations 3.73 3.38 3.34 Reservoirs, dams and ducts 2.68 2.50 2.21 Hydraulic turbines 2.93 2.89 2.60 Gas and steam turbines 2.00 2.00 2.00 Water cooling and treatment 4.00 4.00 4.00 Gas conditioner 4.00 4.00 4.00 Wind power plant unit 4.94 5.49 3.71 Average rates for central government assets Buildings 3.35 3.35 3.35 Machinery and office equipment 6.25 6.25 6.25 Furniture and fixtures 6.25 6.25 6.25 Vehicles 14.29 14.29 14.29 Telecommunications segment rates Infrastructure backbone 3% to 5% 3% to 5% 3% to 5% Infrastructure last mile 17% and 25% 17% and 25% 3% to 17% Other infrastructure equipment 7% to 20% 7% to 20% 7% to 20% 17.8.1 Assets with depreciation rates limited to the concession term The assets of the original project of the Mauá, Colíder, Baixo Iguaçu, Cavernoso II and SHPP Bela Vista plants, of Copel GeT, and of the Santa Clara and Fundão plants, of Elejor, are considered by the Granting Authority, without full guarantee of indemnification for their residual value at the end of the concession term. This interpretation is based on the Concessions Law No. 8,987/1995 and Decree No. 2,003/1996, which regulate the generation of electricity by independent generators. Accordingly, from the entry into operation of these assets, including land, depreciation is recognized at the highest rate among that determined by ANEEL or the rate calculated based on the concession period. As provided for in the concession contracts, subsequent investments not foreseen in the original project, as long as approved by the Granting Authority and not yet amortized, will be indemnified at the end of the concession period and depreciated at the rates established by ANEEL, as from the date of their entry in operation.

18 Intangible assets

18 Intangible assets	12 Months Ended
	Dec. 31, 2020
Disclosure of detailed information about intangible assets [abstract]
Intangible assets	18 Intangible assets 12.31.2020 12.31.2019 Concession agreement - distribution of electricity (18.1) 6,203,387 5,703,686 Generation concession agreements/ authorization (18.2) 553,840 582,671 Concession agreement - piped gas distribution (18.3) 132,366 - Others (18.4) 39,863 46,254 6,929,456 6,332,611 18.1 Power distribution service concession . Intangible asset Special liabilities in service in service Total Balance as of January 1, 2019 8,212,792 (2,822,729) 5,390,063 Incorporations (Note 10.1) 2,625 (2,550) 75 Transfers from contract assets (Note 11.1) 771,844 (93,164) 678,680 Transfers to investments (7) - (7) Transfers to other receivables (1,520) - (1,520) Amortization of quotas - concession (a) (461,370) 134,864 (326,506) Amortization of quotas - PIS/Pasep and Cofins credits (10,740) - (10,740) Loss on disposal (26,359) - (26,359) Balance as of December 31, 2019 8,487,265 (2,783,579) 5,703,686 Transfers from accounts receivable - concessions (Note 10.1) 99 - 99 Transfers from contract assets (Note 11.1) 1,016,482 (105,116) 911,366 Transfers to other receivables (1,372) - (1,372) Amortization of quotas - concession (a) (485,677) 138,596 (347,081) Amortization of quotas - PIS/Pasep and Cofins credits (10,655) - (10,655) Loss on disposal (52,656) - (52,656) Balance as of December 31, 2020 8,953,486 (2,750,099) 6,203,387 (a) Amortization during the concession as of the start of commercial operations of the enterprises or based on the useful life of the assets, of the two the shortest. The balance refers to the portion of infrastructure that will be used during concession, net of special obligations. The Special Obligations represent the resources related to the financial participation of consumers, the Federal, State and Municipal Governments, destined to investments in projects related to the concession, and are not onerous liabilities or shareholder credits. 18.2 Generation concession agreements . Concession contract (a) Concession and in service in progress authorization rights Total Balance as of January 1, 2019 226,411 - 367,441 593,852 Business combination effects - - 20,113 20,113 Amortization of quotas - concession and authorization (b) (16,944) - (14,350) (31,294) Balance as of December 31, 2019 209,467 - 373,204 582,671 ANEEL grant - use of public property - 3,682 - 3,682 Amortization of quotas - concession and authorization (b) (17,527) - (14,986) (32,513) Capitalizations for intangible in service 3,682 (3,682) - - Balance as of December 31, 2020 195,622 - 358,218 553,840 (a) Includes the balances of use of public asset and hydrological risk renegotiation (b) Amortization during the concession/authorization as of the start of commercial operations of the enterprises. 18.3 Piped gas distribution service concession . Total Balance as of January 1, 2019 3,619 Transfers from accounts receivable - concessions (Note 10.2) 24,835 Amortization of quotas - concession (28,454) Balance as of December 31, 2019 - Transfers from contract assets (Note 11.2) 7,277 Transfers from accounts receivable - concessions (Note 10.2) 154,483 Amortization of quotas - concession (29,243) Loss on disposal (151) Balance as of December 31, 2020 132,366 18.4 Other intangible assets . in service in progress Total Balance as of January 1, 2019 25,630 15,933 41,563 Acquisitions - 5,032 5,032 Transfers from property, plant and equipment (1,471) 10,217 8,746 Capitalizations for intangible in service 16,118 (16,118) - Amortization of quotas (a) (8,646) - (8,646) Amortization of quotas - PIS/Pasep and Cofins credits (11) - (11) Loss on disposal - (430) (430) Balance as of December 31, 2019 31,620 14,634 46,254 Acquisitions 128 10,863 10,991 Transfers from property, plant and equipment 229 2,932 3,161 Capitalizations for intangible in service 7,136 (7,136) - Amortization of quotas (a) (11,584) - (11,584) Amortization of quotas - PIS/Pasep and Cofins credits (13) - (13) Loss on disposal - (4) (4) (-) Reclassification (b) (8,307) (635) (8,942) Balance as of December 31, 2020 19,209 20,654 39,863 (a) Annual amortization rate: 20%. (b) Reclassification to Assets classified as held for sale (Note 40).

19 Payroll, Social Charges and

19 Payroll, Social Charges and Accruals	12 Months Ended
	Dec. 31, 2020
Payroll Social Charges And Accruals [Abstract]
Payroll, Social Charges and Accruals	19 Payroll, Social Charges and Accruals 12.31.2020 12.31.2019 Social security liabilities Taxes and social contribution 42,748 47,022 Social security charges on paid vacation and 13th salary 29,742 29,182 72,490 76,204 Labor liabilities Payroll, net - 3,330 Vacation and 13th salary 100,175 98,648 Provisons by performance andprofit sharing 483,110 156,040 Voluntary retirement program 28,071 2,820 Other liabilities 200 2 611,556 260,840 684,046 337,044

20 Accounts Payable to Supplier

20 Accounts Payable to Suppliers	12 Months Ended
	Dec. 31, 2020
Accounts Payable To Suppliers [Abstract]
Accounts Payable to Suppliers	20 Accounts Payable to Suppliers 12.31.2020 12.31.2019 Energy supplies 1,393,899 1,085,777 Materials and supplies 671,458 520,647 Natural gas for resale 38,574 79,174 Charges for use of grid system 332,521 187,595 2,436,452 1,873,193 Current 2,291,307 1,685,280 Noncurrent 145,145 187,913

21 Loans and Financing

21 Loans and Financing	12 Months Ended
	Dec. 31, 2020
Loans And Financing [Abstract]
Loans and Financing	21 Loans and Financing Contractual Effective 12.31.2020 12.31.2019 Issue Number of Final Payment financial interest Contract Contracts Company Allocation Guarantees Date installment maturity of charges charges p.y. rate p.y. amount FOREIGN CURRENCY National Treasury Department (STN - Secretaria do Tesouro Nacional ) Par Bond Copel Debt negotiation Guarantees deposited(21.1). 05.20.1998 1 04.11.2024 Half-yearly 6.0% + 0.20% 6.0% + 0.20% 17,315 82,933 64,325 Discount Bond 05.20.1998 1 04.11.2024 Half-yearly 2.8125% + 0,20% 2.8125% + 0,20% 12,082 57,404 44,658 Total foreign currency 140,337 108,983 LOCAL CURRENCY Banco do Brasil CCB 306.401.381 (a) Copel HOL Working Capital Credit assigment 12.19.2019 5 03.25.2022 Quarterly 120.00% of DI 126.99% of DI 640,005 640,177 640,530 NCI 306.401.445 Copel HOL 02.24.2017 2 02.15.2020 Half-yearly 124.5% of DI 136.15% of DI 77,000 - 39,446 640,177 679,976 Eletrobras 983/95 National Program for Watering - Proni. Own revenue; issue of promissory notes and commercial duplicates. 12.22.1994 80 11.15.2020 Quarterly 8.0% 8.0% 11 - 26 984/95 12.22.1994 80 11.15.2020 Quarterly 8.0% 8.0% 14 - 11 985/95 12.22.1994 80 08.15.2021 Quarterly 8.0% 8.0% 61 - 11 206/07 Rural Electricity Program - Luz para Todos . 03.03.2008 120 08.30.2020 Monthly 5.0%+ 1.0% 5.05% 109,642 - 5,953 273/09 02.18.2010 120 12.30.2022 Monthly 5.0%+ 1.0% 5.0%+ 1.0% 63,944 - 4,933 - 10,934 Caixa Econômica Federal 415.855-22/14 Copel DIS Rural Electricity Program - Luz para Todos . Own revenue; issue of promissory notes and commercial duplicates. 03.31.2015 120 12.08.2026 Monthly 6.0% 6.0% 16,984 11,496 13,410 3153-352 Acquisition of machinery, equipment and IT and automation equipment. Assignment of trade notes receivable. 11.01.2016 36 12.15.2021 Monthly 5.5 % above TJLP 5.5 % above TJLP 1,156 165 331 11,661 13,741 Finep 21120105-00 Copel Tel BEL project - ultra wide band intranet service (Ultra Wide Band - UWB). Lock of proceeds received in current account. 07.17.2012 81 10.15.2020 Monthly 4.0% 4.39% - - 2,626 21120105-00 07.17.2012 81 10.15.2020 Monthly 3.5% + TR 3.88% + TR - - 2,219 - 4,845 Banco do Brasil - BNDES Transfer 21/02000-0 Copel GeT Implementation of Mauá HPP. Revenue from energy sales from the plant. 04.16.2009 179 01.15.2028 Monthly 2.13% above TJLP 2.13% above TJLP 169,500 83,936 95,807 83,936 95,807 (a) On March 25, 2021, the debt was renegotiated, with the final maturity date being changed to March 25, 2023 and the amount of financial charges to 135% of the DI p.y. Contractual Effective 12.31.2020 12.31.2019 Issue Number of Final Payment financial interest Contract Contracts Company Allocation Guarantees Date installment maturity of charges charges p.y. rate p.y. amount BNDES 820989.1 Copel GeT Implementation of Mauá HPP. Revenue from energy sales from the plant. 03.17.2009 179 01.15.2028 Monthly 1.63% above TJLP 1.63% above TJLP 169,500 83,935 95,807 1120952.1 Implementation of transmission line between Foz do Iguaçu and Cascavel Oeste substations. Assignment of receivables; revenue from energy transmission services. 12.16.2011 168 04.15.2026 Monthly 1.82% and 1.42% above TJLP 1.82% and 1.42% above TJLP 44,723 17,756 21,090 1220768.1 Implementation of Cavernoso II SHP. Revenue from energy sales from the plant. 09.28.2012 192 07.15.2029 Monthly 1.36% above TJLP 1.36% above TJLP 73,122 41,405 46,240 13211061 Implementation of Colíder HPP. Assignment of receivables 12.04.2013 192 10.15.2031 Monthly 0% and 1.49% above TJLP 6.43% and 7.68% 1,041,155 748,083 817,329 13210331 Implementation of Cerquilho III substation. 12.03.2013 168 08.15.2028 Monthly 1.49% and 1.89% above TJLP 1.49% and 1.89% above TJLP 17,644 10,069 11,385 15206041 Implementation of transmission line Assis - Paraguaçu Paulista II. 12.28.2015 168 06.15.2030 Monthly 2.42% above TJLP 9.04% 34,265 20,280 22,419 15205921 Implementation of transmission lines Londrina - Figueira and Salto Osório - Foz do Chopim. 12.28.2015 168 12.15.2029 Monthly 2.32% above TJLP 8.93% 21,584 12,171 13,526 18205101 Implementation of Baixo Iguaçu HPP. 11.22.2018 192 06.15.2035 Monthly 1.94% above TJLP 8.5% 194,000 184,087 196,827 19207901- A+B+E+F+G+H Implementation of transmission facilities for the line: substation Medianeira; substation Curitiba Centro and Curitiba Uberaba and substation Andirá Leste. 06.03.2020 279 12.15.2043 Monthly IPCA + 4.8165% IPCA + 4.8570% 206,882 158,351 - 19207901- C+D+I+J Implementation of transmission facilities for the line: transmission line Curitiba Leste - Blumenal and Baixo Iguaçu - Realeza. 06.03.2020 267 12.15.2043 Monthly IPCA + 4.8165% IPCA + 4.8570% 225,230 110,699 - 14205611-A Copel DIS Preservation of business, improvements, operating support and general investments in the expansion and consolidation of projects and social investment programs of companies (ISE). Surety of Copel; assignment of revenues and indemnity rights under the concession. 12.15.2014 72 01.15.2021 Monthly 2.09% above TJLP 8.37% 41,583 585 7,611 14205611-B 12.15.2014 6 02.15.2021 Annual 2.09 above TR BNDES 2.09 above TR BNDES 17,821 4,329 8,288 14205611-C 12.15.2014 113 06.15.2024 Monthly 6.0% 6.0% 78,921 27,434 35,267 14205611-D 12.15.2014 57 02.15.2021 Monthly TJLP TJLP 750 2 11 14.2.1271.1 Santa Maria Construction and implementation of wind generating plants. Surety of Copel; pledge of shares; assignment of receivables and revenues. 06.01.2015 192 08.15.2031 Monthly 1.66% above TJLP 8.26% 71,676 41,665 45,582 14.2.1272.1 Santa Helena 06.01.2015 192 08.15.2031 Monthly 1.66% above TJLP 8.26% 82,973 45,208 49,458 11211521 GE Farol Pledge of shares; assignment of receivables from energy sales from the project; assignment of machinery and equipment. 03.19.2012 192 06.15.2030 Monthly 2.34% above TJLP 2.34% above TJLP 54,100 37,470 41,388 11211531 GE Boa Vista 03.19.2012 192 06.15.2030 Monthly 2.34% above TJLP 2.34% above TJLP 40,050 27,701 30,598 11211541 GE S.B. do Norte 03.19.2012 192 06.15.2030 Monthly 2.34% above TJLP 2.34% above TJLP 90,900 62,824 69,394 11211551 GE Olho D'Água 03.19.2012 192 06.15.2030 Monthly 2.34% above TJLP 2.34% above TJLP 97,000 67,096 74,112 18204611 Cutia Pledge of shares; assignment of receivables. 10.25.2018 192 07.15.2035 Monthly 2.04% above TJLP 8.37% 619,405 588,169 611,457 13212221 - A Costa Oeste Implementation of transmission line between Cascavel Oeste and Umuarama Sul substations and implementation of Umuarama Sul substation. Assignment of receivables; 100% of pledged shares. 12.03.2013 168 11.30.2028 Monthly 1.95% + TJLP 1.95% + TJLP 27,634 17,046 19,203 13212221 - B 12.03.2013 106 09.30.2023 Monthly 3.5% 3.5% 9,086 2,194 2,992 14205851 - A Marumbi Implementation of transmission line between Curitiba and Curitiba Leste and implementation of Curitiba Leste substation. 07.08.2014 168 06.30.2029 Monthly 2.00% + TJLP 2.00% + TJLP 33,460 22,029 24,627 14205851 - B 07.08.2014 106 04.30.2024 Monthly 6.0% 6.0% 21,577 7,550 9,813 2,338,138 2,254,424 Total local currency 3,073,912 3,059,727 Gross debt 3,214,249 3,168,710 (-) Transaction cost (25,718) (26,327) Net debt 3,188,531 3,142,383 Current 717,677 255,521 Noncurrent 2,470,854 2,886,862 DI - Interbank Deposit Rate IPCA - Inflation Index ( Índice Nacional de Preços ao Consumidor Amplo, in Portuguese) TJLP - Long-term interest rate TR - Referential Rate 21.1 Collateral and Escrow deposits– STN Constitution of guarantees, in the form of a cash guarantee, Par Bond, in the amount of R$ 78,764 (R$ 57,968 at December 31, 2019), and Discount Bond, in the amount of R$ 54,757 (R$ 40,465 at December 31, 2019) intended to the repayment of the amount of principal related to the STN contracts, upon maturity on April 11, 2024. The amounts are adjusted by applying the weighted average of the percentage changes of the Zero Coupon Bond prices of the United States of America Treasury, by the percentage share of each series of the instrument in the portfolio of collateral for repayment of principal, constituted pursuant to the Brazilian Financing Plan of 1992. 21.2 Breakdown of loans and financing by currency and index 12.31.2020 % 12.31.2019 % Foreign currency - change in currencies in the period (%) U.S. Dollar 28.93 140,337 4.40 108,983 3.47 140,337 4.40 108,983 3.47 Local currency - indexes at period end (%) TJLP 4.55 2,090,340 65.58 2,271,187 72.30 CDI 1.90 638,431 20.02 676,720 21.54 TR 0.00 - - 2,202 0.07 IPCA 4.52 270,749 8.49 8,288 0.26 Without indexer (annual fixed rate) - 48,674 1.51 75,003 2.36 3,048,194 95.60 3,033,400 96.53 3,188,531 100.00 3,142,383 100.00 21.3 Maturity of noncurrent installments 12.31.2020 Gross debt (-) Transaction cost Net debt 2022 328,538 (2,054) 326,484 2023 202,249 (1,732) 200,517 2024 337,272 (1,738) 335,534 2025 195,764 (1,735) 194,029 2026 195,846 (1,738) 194,108 After 2026 1,233,752 (13,570) 1,220,182 2,493,421 (22,567) 2,470,854 21.4 Changes in loans and financing Foreign currency Local currency Total Balance as of January 1, 2019 104,751 3,942,556 4,047,307 Funding - 796,296 796,296 Charges 5,599 268,950 274,549 Monetary and exchange variations 4,170 6,907 11,077 Amortization - principal - (1,660,869) (1,660,869) Payment - charges (5,537) (320,440) (325,977) Balance as of December 31, 2019 108,983 3,033,400 3,142,383 Funding - 263,000 263,000 Charges 6,928 176,337 183,265 Monetary and exchange variations 31,189 5,869 37,058 Amortization - principal - (253,700) (253,700) Payment - charges (6,763) (176,712) (183,475) Balance as of December 31, 2020 140,337 3,048,194 3,188,531 (a) Reclassification to Assets classified as held for sale (Note 40). 21.5 Covenants The Company signed loans and financing agreements containing covenants that require economic and financial ratios to be maintained within pre-determined parameters, requiring annual fulfillment and other conditions to be complied with, such as not changing the Company's interest in the capital stock of subsidiaries that would represent change of control without prior consent. Failing to fulfill these conditions may lead to accelerated debt repayment and/or fines. At December 31, 2020, all financial indicators measured annually and agreed commitments have been fully met. The financial covenants contained in the agreements are presented below: Company Contract Annual financial index Limit Copel GeT BNDES Finem No. 820989.1 - Mauá EBITDA / Net financial results ≥ 1,3 Banco do Brasil No. 21/02000-0 - Mauá Copel DIS BNDES Finem No. 14205611 Financial indebtedness / adjusted EBITIDA ≤ 4,0 Santa Maria BNDES Finem No. 14212711 Debt service coverage ratio ≥ 1,3 Santa Helena BNDES Finem No. 14212721 São Bento Energia, Investimento e Participações BNDES Assignment Agreement Debt service coverage ratio ≥ 1,3 GE Boa Vista S.A. BNDES Finem No. 11211531 GE Farol S.A. BNDES Finem No. 11211521 GE Olho D´Água S.A. BNDES Finem No. 11211551 GE São Bento do Norte S.A. BNDES Finem No. 11211541 Cutia BNDES Finem No. 18204611 Debt service coverage ratio (a) ≥ 1,2 Costa Oeste BNDES Finem No. 13212221 Debt service coverage ratio ≥ 1,3 Marumbi BNDES Finem No. 14205851 Debt service coverage ratio ≥ 1,3 Financing for businesses - Finem (a) financial ratio calculated based on the amounts of the consolidated financial statements of Cutia Empreendimentos Eólicos S.A.

22 Debentures

22 Debentures	12 Months Ended
	Dec. 31, 2020
Debentures [Abstract]
Debentures	22 Debentures Contractual Effective 12.31.2020 12.31.2019 Issue Number of Final Payment financial interest Contract Company Issue Characteristics Allocation Guarantees Date installment maturity of charges charges p.y. rate p.y. amount Copel 7 th (a) Working capital or used to make investments in the issuer. Personal guarantee 01.19.2018 2 01.19.2021 Half-yearly 119.0% of DI 125.18% of DI 600,000 303,101 617,378 8 th Payment of the 6 th 06.14.2019 1 06.14.2022 Half-yearly 106.0% of DI 110.93% of DI 500,000 500,475 500,906 Copel GeT 1 st (a) Working capital or used to make investments in the issuer. Personal guarantee 05.15.2015 3 05.15.2020 Annual 113.0% of DI 114.29% of DI 1,000,000 - 346,906 3 rd 10.20.2017 3 10.20.2022 Half-yearly 126.0% ofDI 131.21% of DI 1,000,000 669,811 1,011,691 4 th Full early redemption of the 4 th st nd 07.23.2018 3 07.23.2023 Half-yearly 126.0% ofDI 133.77% of DI 1,000,000 1,010,625 1,030,054 5 th (b) Reimbursement of expenses related to the construction of the Transmission Lines Araraquara II - Taubaté, Assis - Londrina and Foz do Chopim. 09.25.2018 5 09.15.2025 Half-yearly IPCA + 7.6475% IPCA+ 8.3295% 290,000 322,110 308,464 6 th st (c) Full early redemption of the 5 th nd nd 07.15.2019 2 07.15.2024 Half-yearly 109.0% of DI 111.25% of DI 800,000 807,793 818,406 6 th nd Reimbursement of expenses related to the Colíder HPP and Baixo Iguaçu HPP projects 07.15.2019 1 07.15.2025 Half-yearly IPCA + 3.90% IPCA+ 4.46% 200,000 215,265 205,677 Copel DIS 3 rd (a) Working capital or used to make investments in the issuer. Personal guarantee 10.20.2017 2 10.20.2022 Half-yearly 126.0% of DI 130.85% of DI 500,000 502,358 505,846 4 th Working capital and payment of the 1 st nd 09.27.2018 3 09.27.2023 Half-yearly DI + spread 2.70% CDI + 3.96% 1,000,000 1,011,796 1,019,626 5 th st (c) Investment for expansion, renovation or improvement and reimbursement of expenses of the Issuer's electricity distribution network linked to concession contract No. 46/1999 of ANEEL. 11.15.2019 3 11.15.2027 Half-yearly IPCA + 4.20% IPCA+ 4.61% 500,000 529,349 506,180 5 th nd Reinforcement of working capital and recomposition of cash by the final amortization of the 2nd issue of debentures. 11.15.2019 2 11.15.2022 Half-yearly DI + spread 1.45% CDI + 1.65% 350,000 351,479 351,914 Copel CTE 1 st (a) Deployment, expansion and modernization of the telecommunication network. Personal guarantee 10.15.2015 5 10.15.2024 Half-yearly IPCA +7.9633% IPCA+ 8.1073% 160,000 - 195,429 2 nd 07.15.2017 1 07.15.2022 Half-yearly IPCA + 5.4329% IPCA+ 6.1036% 220,000 - 246,355 3 rd Investments in the issuer. 05.15.2019 3 05.15.2024 Half-yearly 117.0% of DI 119.58% of DI 210,000 - 211,348 Brisa Potiguar 2 nd st (d) Implementation of wind generating plants. Real and personal guarantee and pledge of Copel GeT shares. 03.24.2016 192 07.15.2032 Monthly TJLP + 2.02% TJLP + 2.02% 147,575 109,677 119,171 2 nd nd 03.24.2016 192 07.15.2032 Monthly IPCA + 9.87% IPCA+ 10.92% 153,258 130,449 135,657 Cutia 1 st (b) Construction and implementation of wind generating plants. Personal guarantee 03.20.2019 26 12.15.2031 Half-yearly IPCA +5.8813% IPCA+ 6.83% 360,000 353,166 352,829 Compagás 2 nd (e) Fund investment plan of the issuer. Floating 04.15.2016 54 12.15.2021 Quarterly TJLP + 2.17% TJLP + 2.17% 33,620 3,000 6,001 0 SELIC + 2.17% SELIC + 2.17% - 2,890 5,782 3 rd (f) Issuer's investment plan fund. Real 12.17.2019 18 06.28.2021 Monthly DI + spread 0.88 5.68% 43,000 14,475 44,746 Gross debt 6,837,819 8,540,366 (-) Transaction cost (80,338) (110,656) Net debt 6,757,481 8,429,710 Current 1,881,411 1,164,301 Noncurrent 4,876,070 7,265,409 (a) Simple debentures, single series, not convertible into shares, unsecured, for public distribution with restricted placement efforts, according to CVM No. 476. Guarantor: Copel. Trustee: Pentágono S.A. DTVM. (b) Simple debentures, single series, not convertible into shares, with security interest and additional personal guarantee, for public distribution with restricted efforts, pursuant to CVM Instruction No. 476. Guarantor: Copel. Trustee: Pentágono S.A. DTVM. (c) Simple debentures, two series, not convertible into shares, unsecured, for public distribution with restricted placement efforts, according to CVM No. 476. Guarantor: Copel. Trustee: Pentágono S.A. DTVM. (d) Simple debentures, two series, not convertible into shares, issued privately. Companies: Nova Asa Branca I, Nova Asa Branca II, Nova Asa Branca III, Nova Eurus e Ventos de Santo Uriel. Guarantor: Copel. They have no trustee. (e) Simple registered debentures, single series, with private issue and exclusive placement by BNDESPAR. Guarantor: Compagás. Trustee: BNDES Participações S.A. BNDESPAR. (f) Simple and registered debentures, with a single series, in private issue, with public distribution of restricted efforts. Guarantor: Compagás. Trustee: Simplific Pavarini DTVM Ltda. 22.1 Maturity of noncurrent installments 12.31.2020 Gross debt (-) Transaction cost Net debt 2022 2,035,503 (18,969) 2,016,534 2023 1,173,340 (12,064) 1,161,276 2024 504,759 (6,982) 497,777 2025 499,422 (5,298) 494,124 2026 234,477 (3,756) 230,721 After 2026 488,057 (12,419) 475,638 4,935,558 (59,488) 4,876,070 22.2 Changes in debentures Total Balance as of January 1, 2019 7,518,131 Funding 2,965,028 Charges and monetary variations 623,795 Amortization - principal (1,977,125) Payment - charges (700,119) Balance as of December 31, 2019 8,429,710 Charges and monetary variations 453,951 Amortization - principal (1,046,295) Payment - charges (422,295) Reclassification (a) (657,590) Balance as of December 31, 2020 6,757,481 (a) Reclassification to Assets classified as held for sale (Note 40). 22.3 Covenants Copel issued debentures containing covenants that require the maintenance of certain economic and financial ratios within pre-determined parameters, requiring annual fulfillment and other conditions to be complied with, such as not changing the Company's interest in the capital stock that would represent change of control without prior consent from the debenture holders; not paying out dividends or interest on capital if it is in arrears in relation to honoring any of its financial obligations or not maintaining the financial ratios as determined without prior written consent of the debenture holders. Failing to fulfill these conditions may lead to accelerated redemption of debentures and regulatory penalties. At December 31, 2020, all financial indicators measured annually and agreed commitments were fully met, except the subsidiary Ventos de Santo Uriel, which did not meet the Debt Service Coverage Ratio (ICSD) of 1.3. However, the Company preventively requested and received, at December 31, 2020, according to a letter from BNDES, with reference AE/DEENE2 No. 186/2020, the commitment of the banking institution not to declare the early maturity of the debenture deed, based on the performance of this ratio in 2020. The financial covenants contained in the agreements are presented as follows: Company Contract Annual financial index Limit Copel 7 th Consolidated net debt / Consolidated EBITDA ≤ 3,5 8 th Copel GeT 3 rd 4 th 5 th 6 th Copel DIS 3rd issue of Debentures 4th issue of Debentures 5 th Copel TEL 1 st 2 nd 3 rd Compagás 2 nd Net debt / EBTIDA ≤ 3,5 General Indebtedness ≤ 0,7 3rd issue of Debentures Net debt / EBTIDA ≤ 3,5 Nova Asa Branca I Debt service coverage ratio ≥ 1,3 Nova Asa Branca II Nova Asa Branca III 2 nd Nova Eurus IV Ventos de Santo Uriel Cutia 1 st Debt service coverage ratio (a) ≥ 1,2 (a) financial ratio calculated based on the amounts of the consolidated financial statements of Cutia Empreendimentos Eólicos S.A.

23 Post-employment Benefits

23 Post-employment Benefits	12 Months Ended
	Dec. 31, 2020
Post-employment Benefits
Post-employment Benefits	23 Post-employment Benefits The Company sponsors private retirement and pension plans (Unified Plan and Plan III) and Healthcare Plan for medical and dental care ("ProSaúde II" and "ProSaúde III" Plans) for their active employees and their legal dependents. The lifetime sponsorship of the Healthcare Plan for retirees, pensioners and legal dependents is only applied to "Prosaúde II" plan participants. Fundação Copel de Previdência e Assistência is the entity that manages these plans. On March 17, 2021, the Board of Directors approved the signing of assistance agreements for maintaining the Prosaúde II and Prosaúde III plans, managed by Fundação Copel. 23.1 Pension plan The Unified Plan is a Defined Benefit plan - BD in which the income is predetermined, according to each individual's salary. This plan is closed for new participants since 1998. The Plan III is a Variable Contribution plan - CV, being the only plan available for new participants. 23.2 Healthcare Plan The Company allocate resources for the coverage of healthcare expenses incurred by their employees and their dependents, within rules, limits and conditions set in "ProSaúde II" and "ProSaúde III" Plans' regulations. Coverage includes periodic medical exams in both plans and is extended to all retirees and pensioners for life only in the "ProSaúde II" plan. 23.3 Balance sheet and statement of income Amounts recognized in liabilities, under Post-employment benefits, are summarized below: 12.31.2020 12.31.2019 Pension plans 1,124 1,537 Healthcare plans 1,492,490 1,193,399 1,493,614 1,194,936 Current 69,231 66,004 Noncurrent 1,424,383 1,128,932 The increase in the balance is due to the actuarial assessment of the future benefits of the Health Plan II due to the increase in the projected medical costs, impact of the discount rate and inflation, as well as an increase in the Aging Factor between the retirement age and the last range of participants above 80 years old. Amounts recognized in the statement of income are shown below: 12.31.2020 12.31.2019 12.31.2018 Employees Pension plans 57,977 60,754 67,457 Healthcare plan - post employment 94,349 99,577 97,866 Healthcare plan - active employees 75,192 76,454 76,702 227,518 236,785 242,025 Management Pension plans 977 1,450 1,598 Healthcare plan 139 91 127 1,116 1,541 1,725 228,634 238,326 243,750 23.4 Changes in post-employment benefits Balance as of January 1, 2019 968,763 Appropriation of actuarial calculation 99,578 Appropriation of pension and healthcare contributions 138,974 Adjustment related to actuarial gains (loss) 186,628 Amortizations (199,007) Balance as of December 31, 2019 1,194,936 Appropriation of actuarial calculation 94,349 Appropriation of pension and healthcare contributions 130,129 Adjustment related to actuarial gains 271,343 Amortizations (197,143) Balance as of December 31, 2020 1,493,614 23.5 Actuarial valuation in accordance with IAS 19 23.5.1 Actuarial assumptions The actuarial assumptions used to determine the amounts of liabilities and costs for 2020 and 2019 are shown below: 2020 2019 Real Nominal Real Nominal Economic Inflation p.y. - 4.00% - 2.90% Expected rate of discount/return p.y. Unified Plan - Defined Benefit 2.85% 6.96% 3.05% 6.04% Unified Plan - Balance 3.20% 7.33% 3.20% 6.19% Plan III 3.40% 7.54% 3.20% 6.19% Assistance Plan 3.20% 7.33% 3.30% 6.30% Salary growth Unified Plan p.y. 0.00% 4.00% 1.00% 3.93% Plan III p.y. 1.00% 5.04% 1.00% 3.93% Demographic Mortality Table AT - 2000 AT - 2000 Mortality table of individuals with permanent disability WINKLEVOSS WINKLEVOSS Table of new disability benef it vested TASA 1927 TASA 1927 23.5.2 Number of participants and beneficiaries Social Security Plans Unified Plan Plan III Assistance Plan 12.31.2020 12.31.2019 12.31.2020 12.31.2019 12.31.2020 12.31.2019 Number of active participants 22 27 7,401 7,647 6,546 6,963 Number of Inactive participants 4,274 4,337 4,633 4,324 9,032 8,433 Number of dependent people - - - - 21,716 22,183 Total 4,296 4,364 12,034 11,971 37,294 37,579 23.5.3 Life expectancy after the average age of participants - Annuity Table AT-2000 (in years) Unified Plan Plan III As of 12.31.2020 Retired participants 12.38 23.16 Pensioner participants 14.07 24.98 As of 12.31.2019 Retired participants 13.13 25.84 Pensioner participants 8.40 25.84 The average age of inactive participants of the healthcare and pension plans of the Company is 68.1 and 67.2 years, respectively. 23.5.4 Actuarial evaluation Based on the revision of the assumptions, the amounts of the Unified Plan and Plan III as of December 31, 2020 totaled surplus of R$ 807,444 and R$ 285,057, respectively and surplus of R$ 908,294 and R$ 91,218, respectively as of December 31, 2019. Applicable ruling legislation does not allow any significant reduction in contributions or refunds to the Company based on the current surplus of these plans. For this reason, the Company did not record assets in its balance sheet as of December 31, 2020, reflecting any right to reduce contributions, refund of surplus or other amounts. Unified Plan Assistance 12.31.2020 12.31.2019 Total liabilities or partially covered 6,760,824 3,344,723 1,714,638 11,820,185 11,074,608 Fair value of the plan assets (7,568,268) (3,629,780) (222,148) (11,420,196) (10,880,721) Plan coverage status (807,444) (285,057) 1,492,490 399,989 193,887 Unrecognized asset 807,444 285,057 - 1,092,501 999,512 - - 1,492,490 1,492,490 1,193,399 The Company adjusted their assistance liabilities through the actuarial report issued on December 31, 2020, as presented in the Statements of Comprehensive Income. 23.5.5 Changes in actuarial liabilities Unified Plan Plan III Assistance Plan Present value of net actuarial obligations as of January 1, 2018 5,352,894 1,734,568 1,035,957 Cost of services 589 9,604 11,633 Cost of interest 533,201 195,991 102,916 Benefits paid (414,256) (133,281) (7) Actuarial (gain) losses 442,336 338,779 (9,894) Present value of net actuarial obligations as of December 31, 2018 5,914,764 2,145,661 1,140,605 Cost of services 560 4,098 14,306 Cost of interest 477,732 128,075 106,004 Benefits paid (435,454) (174,427) (30) Actuarial (gain) losses 680,860 943,129 128,725 Present value of net actuarial obligations as of December 31, 2019 6,638,462 3,046,536 1,389,610 Cost of services 578 2,018 20,854 Cost of interest 405,371 183,866 85,561 Benefits paid (456,151) (203,342) (74) Actuarial (gain) losses 172,564 315,645 218,687 Present value of net actuarial obligations as of December 31, 2020 6,760,824 3,344,723 1,714,638 23.5.6 Changes in actuarial assets Unified Plan Plan III Assistance Plan Fair value of the Plan's assets as of January 1, 2018 5,834,572 1,821,055 170,923 Return estimated for assets 593,572 230,703 16,579 Contributions and distributions 24,011 9,184 - Benefits paid (414,256) (133,281) - Actuarial gain (losses) 252,942 250,575 (14,511) Fair value of the Plan's assets as of December 31, 2018 6,290,841 2,178,236 172,991 Return estimated for assets 685,685 337,476 51,541 Contributions and distributions 23,851 4,185 - Benefits paid (435,454) (174,427) - Actuarial gain (losses) 981,833 792,284 (28,321) Fair value of the Plan's assets as of December 31, 2019 7,546,756 3,137,754 196,211 Return estimated for assets 607,252 224,591 16,474 Contributions and distributions 23,919 136,708 - Benefits paid (456,151) (203,341) - Actuarial gain (losses) (153,508) 334,068 9,463 Fair value of the Plan's assets as of December 31, 2020 7,568,268 3,629,780 222,148 23.5.7 Estimated costs The estimated net periodic plan costs (gains) for 2021 for each plan are shown below: Unified Plan Plan III Assistance Plan Cost of current service 388 4,010 7,368 Estimated cost of interest 481,656 246,255 125,133 Expected return on plan assets (530,144) (245,291) (15,994) Expected employee contributions (136) (2,003) - Costs (income or loss) (48,236) 2,971 116,507 23.5.8 Sensitivity Analysis The following tables set out a sensitivity analysis, which shows the effect of a one percent increase or decrease in the assumed care costs, in the aggregate of the cost of service and cost of interest components and the accumulated post-employment benefit obligation. Projected scenarios Increase by 1% Decrease in 1% Sensitivity of long-term interest rate Impacts on the obligations of the pension (514,571) 521,397 Impacts on the obligations of healthcare program (130,084) 138,601 Sensitivity of growth rate of the medical costs Impacts on the obligations of healthcare program 116,165 (112,757) Impact on cost of service for the following financial year of healthcare program 492 (478) Sensitivity of the service cost Impacts on the obligations of the pension 29 (30) Impacts on the obligations of healthcare program 572 (586) 23.5.9 Benefits payable The estimated benefits to be paid by the Company in the next five years and the total benefits for the following fiscal years are shown below: Unified Plan Plan III Assistance Plan Total 2021 589,819 179,251 89,842 858,912 2022 572,875 173,696 92,409 838,980 2023 555,705 167,961 91,572 815,238 2024 538,812 162,277 89,509 790,598 2025 522,208 156,810 87,372 766,390 2026 a 2050 5,119,047 2,119,296 1,010,411 8,248,754 23.5.10 Asset allocation and investment strategy The asset allocation for the Company pension and healthcare plans at the end of 2020 and the allocation goal for 2021, by asset category, are shown below: Goal for 2021 (*) 2020 Fixed income 69.6% 70.4% Variable income 7.2% 9.1% Loans 1.6% 1.6% Real estate 5.8% 7.2% Investment structuring 10.5% 8.9% Investments abroad 5.3% 2.8% 100.0% 100.0% (*) Target based on the total investment of each plan. In addition, information on the allocation of assets of pension plans sponsored by the Company: Unified Plan Plan III target (%)(*) minimum (%) target (%) minimum (%) Fixed income 86.5% 55.0% 51.0% 23.0% Variable income 5.0% 1.0% 14.0% 8.0% Loans 0.5% 0.0% 3.0% 1.0% Real estate 5.0% 1.0% 10.0% 0.0% Investment structuring 3.0% 0.0% 16.0% 0.0% Investments abroad 0.0% 0.0% 6.0% 0.0% (*) Target 2020. Management of Fundação Copel decided to keep a more conservative approach investing in variable income in relation to the allowed legal limit, which is 70%. 23.5.11 Additional information The Company made contributions to Plan III (variable contribution plan) for all active employees at December 31, 2020 and 2019, in the amounts of R$ 67,515 and R$70,564, respectively.

24 Sectorial Charges Payable

24 Sectorial Charges Payable	12 Months Ended
	Dec. 31, 2020
Sectorial Charges Due [Abstract]
Sectorial Charges Due	24 Sectorial Charges Payable 12.31.2020 12.31.2019 Energy Development Account - CDE 5,700 4,104 Global Reversal Reserve - RGR 12,446 12,068 Tariff flags 15,566 12,336 33,712 28,508

25 Research and Development and

25 Research and Development and Energy Efficiency	12 Months Ended
	Dec. 31, 2020
Research And Development And Energy Efficiency [Abstract]
Research and Development and Energy Efficiency	25 Research and Development and Energy Efficiency In accordance with Law No. 9,991/2000 and supplementary regulations, concession operators and licensees of electric power generation and transmission are required to allocate annually the percentage of 1% of their net operating regulatory revenue to research and development of the electricity sector activities, and the electric power distribution concession operators must segregate this same percentage into the research and development and energy efficiency programs of the electricity sector. Provisional Measure No. 998 of September 2020, converted into Law No. 14120, on March 1, 2020, amends Law No. 9,991/2000 and provides for the allocation of unused resources from Research and Development (R&D) and Energy Efficiency (PEE) to the Energy Development Account (CDE), aiming at low tariffs until 2025, as a measure to mitigate the economic impacts arising from the Covid-19 pandemic. The regulation of the referred rule is in Aneel Public Consultation. 25.1 Balances recognized for investment in Research and Development (R&D) activities and the Energy Efficiency Program (EEP) Amounts payable, before any related prepayments Amounts payable to regulatory agencies Other amounts payable Balance as of Balance as of 12.31.2020 12.31.2019 Research and Development - R&D FNDCT - 8,085 - 8,085 4,046 MME - 4,041 - 4,041 2,023 R&D 221,977 - 110,769 332,746 341,658 221,977 12,126 110,769 344,872 347,727 Energy efficiency program- EEP Procel - 5,855 - 5,855 16,410 EEP 36,756 - 277,528 314,284 294,034 36,756 5,855 277,528 320,139 310,444 258,733 17,981 388,297 665,011 658,171 Circulante 380,186 375,395 Não circulante 284,825 282,776 National Fund for Scientific and Technological Development - FNDCT National Program of Electricity Conservation - Procel 25.2 Changes in R&D and EEP balances FNDCT MME R&D Procel EEP Total Balance as of January 1, 2019 4,725 2,361 327,626 15,792 242,231 592,735 Business combination effects 20 10 1,464 - - 1,494 Additions 32,311 16,155 32,312 9,333 37,321 127,432 Performance agreement - - - - 3,246 3,246 Interest rate (Note 33) - - 10,627 51 13,892 24,570 Transfers - - - (3,123) 3,123 - Payments (33,010) (16,503) - (5,643) 990 (54,166) Concluded projects - - (30,371) - (6,769) (37,140) Balance as of December 31, 2019 4,046 2,023 341,658 16,410 294,034 658,171 Additions 37,427 18,716 37,426 10,181 40,724 144,474 Performance agreement - - - - 3,545 3,545 Interest rate (Note 33) - - 4,253 1,469 6,828 12,550 Transfers - - - (616) 616 - Payments (33,388) (16,698) - (21,589) - (71,675) Concluded projects - - (50,591) - (31,463) (82,054) Balance as of December 31, 2020 8,085 4,041 332,746 5,855 314,284 665,011

26 Accounts Payable Related to

26 Accounts Payable Related to Concessions	12 Months Ended
	Dec. 31, 2020
Accounts Payable Related To Concessions [Abstract]
Accounts Payable Related to Concessions	26 Accounts Payable Related to Concessions Discount Annual Company Grant Signature Closing rate Adjustment 12.31.2020 12.31.2019 HPP Mauá Copel GeT 06.29.2007 07.03.2007 07.2042 5.65% p.y. IPCA 17,213 16,890 HPP Colider Copel GeT 12.29.2010 01.17.2011 01.2046 7.74% p.y. IPCA 25,075 24,353 HPP Baixo Iguaçu Copel GeT 07.19.2012 08.20.2012 01.2047 7.74% p.y. IPCA 7,841 7,588 HPP Guaricana Copel GeT 03.03.2020 03.03.2020 03.2025 7.74% p.y. IPCA 3,299 - HPP Fundão e HPP Santa Clara Elejor 10.23.2001 10.25.2001 10.2036 11.00% p.y. IGPM 678,436 563,756 731,864 612,587 Current 88,951 73,032 Noncurrent 642,913 539,555 Discount rate applied to calculate present value Real and net discount rate, compatible with the estimated long-term rate, not being linked to the expectation of return from the project. Payment to the federal government Monthly installments equivalent to 1/12 of the annual payment restated, as defined in the concession agreement. 26.1 Changes in accounts payable related to concessions Balance as of January 1, 2019 584,163 Adjust to present value (668) Monetary variations 99,661 Payments (70,569) Balance as of December 31, 2019 612,587 Additions 3,682 Adjust to present value (1,112) Monetary variations 191,638 Payments (74,931) Balance as of December 31, 2020 731,864 26.2 Nominal value and present value of accounts payable related to concession Nominal value Present value 2021 87,432 88,951 2022 87,432 78,757 2023 87,432 71,101 2024 87,432 64,195 After 2024 1,155,565 428,860 1,505,293 731,864

27 Right-of-use asset and lease

27 Right-of-use asset and lease liability	12 Months Ended
	Dec. 31, 2020
Right of Use Asset And Lease Liability [Abstract]
Right-of-use asset and lease liability	27 Right-of-use asset and lease liability With the adoption of IFRS 16, the Company recognized right-of-use asset and lease liability as follows: 27.1 Right-of-use asset Balance as of Additions Remeasurement adjustment Loss on Reclassi- Balance as of January 1, 2020 Amortization disposal fication (a) December 31, 2020 Real estate 40,155 5,319 75 (18,433) (2,551) (1,181) 23,384 Vehicles 46,400 79,455 1,331 (28,176) - (8,694) 90,316 Equipment 6,276 18,797 - (4,880) - (1,372) 18,821 92,831 103,571 1,406 (51,489) (2,551) (11,247) 132,521 (a) Reclassification to Assets classified as held for sale (Note 40). Initial adoption on Additions Remeasurement adjustment Loss on Balance as of January 1, 2019 Amortization disposal 31-Dec-19 Real estate 57,461 2,484 914 (17,705) (2,999) 40,155 Vehicles 57,564 2,295 2,970 (15,205) (1,224) 46,400 Equipment 2,997 4,574 - (1,295) - 6,276 118,022 9,353 3,884 (34,205) (4,223) 92,831 27.2 Lease liability 27.2.1 Changes in lease liability Initial adoption on January 1, 2019 118,022 Additions 9,353 Remeasurement adjustment 3,884 Charges 9,675 Amortization - principal (30,946) Payment - charges (9,130) Baixas (4,254) Balance as of December 31, 2019 96,604 Additions 103,571 Remeasurement adjustment 1,406 Charges 10,528 Amortization - principal (51,761) Payment - charges (7,577) Write-offs (2,670) Reclassification (a) (11,740) Balance as of December 31, 2020 138,361 Current 41,193 Noncurrent 97,168 (a) Reclassification to Assets classified as held for sale (Note 40). The Company defines the discount rate based on the interest rate applied to the last debentures fundraising, disregarding subsidized or incentivized funding. 27.2.2 Maturity of noncurrent installments 2022 41,948 2023 27,625 2024 19,656 2025 8,953 2026 51 After 2026 889 Undiscounted amounts 99,122 Embedded interest (1,954) Lease liabilities balance 97,168 27.2.3 Potential right to Pis/Cofins recoverable The table below shows the potential right to Pis/Cofins recoverable for Pis/Cofins computed in lease consideration payable in the foreseen periods. Cash Flows Nominal value Present value Lease consideration 156,287 138,361 Potencial Pis/Cofins 12,498 11,333 27.3 Impact of forecast inflation on discounted cash flows In accordance with IFRS 16, in measuring and remeasuring lease liabilities and right-of-use assets, the Company used the discounted cash flow method without considering forecast future inflation, according to the prohibition imposed by the standard. However, given the current reality of long-term interest rates in the Brazilian economic environment, the table below shows the comparative balances between the information recorded in accordance with IFRS 16 and the amount that would be recorded considering forecast inflation: Balance in accordance with IFRS 16 Inflation projected balance % Lease liabilities 138,361 155,015 12.04% Right to use assets 132,521 144,842 9.30% Financial expense 9,510 10,716 12.68% Amortization expense 45,090 48,883 8.41% 27.4 Commitments from leases and rentals For leases of low value assets, such as computers, printers and furniture, short-term leases, as well as for leases of land for development of wind power generation projects, whose payment is made based on variable remuneration, the amounts are recognized in the statement of income as operating costs and/or expenses (Note 32.6). The balance of commitments from leases and rentals is shown below: Less than Over 1 year 1 to 5 years 5 years 12.31.2020 Commitments from leases and rents 7,328 31,843 164,149 203,320

28 Other Accounts Payable

28 Other Accounts Payable	12 Months Ended
	Dec. 31, 2020
Other Accounts Payable [Abstract]
Other Accounts Payable	28 Other Accounts Payable 12.31.2020 12.31.2019 Fair value in the purchase and sale of power (Note 35.2.12) 343,406 251,973 Generation deviation - wind projects (Note 35.2.11) 94,089 - Public lighting rate collected 48,188 38,805 Customers 44,508 43,024 Obligations to customers in gas sales operations (a) 29,508 39,665 Aneel Order No. 084/2017 provision 29,174 26,008 Pledges in guarantee 16,409 9,257 Investment acquisition 14,169 13,294 Financial offset for the use of water resources 9,799 12,535 Reimbursements to customer contributions 4,893 4,887 Derivatives fair value - forward contract (Note 35.2.3 - b) - 1,203 Other liabilities 71,143 58,218 705,286 498,869 Current 235,400 149,407 Noncurrent 469,886 349,462 (a) Refers to amounts paid for the purchase of contracted gas volumes not yet taken by customers.

29 Provisions for Legal Claims

29 Provisions for Legal Claims and Contingent Liabilities	12 Months Ended
	Dec. 31, 2020
Provisions For Legal Claims And Contingent Liabilities [Abstract]
Provisions for Legal Claims and Contingent Liabilities	29 Provisions for Legal Claims and Contingent Liabilities The Company are responsible for several legal and administrative proceedings before different courts. Based on assessments made by the Company's legal counsel, Management makes provisions for legal claims in which the losses are rated probable, when the criteria for recognition of provisioning described in Note 4.11 of these financial statements are met. The Company's management believes it is impracticable to provide information regarding the timing of any cash outflows related to the lawsuits for which the Company are responsible on the date of preparation of the financial statements, in view of the unpredictability and dynamics of the Brazilian judicial, tax and regulatory systems, and that the final resolution depends on the conclusions of the lawsuits. For this reason, this information is not provided. 29.1 Change in provision for legal claims Income Provision Construction Transfers/ Balances as of Balances as of for litigations cost Additions Others December 31, January 1, 2020 Additions Reversals Additions (Rev.) to assets Discharges (a) 2020 Tax Cofins 104,284 2,864 - - - - - 107,148 Others 71,506 47,949 (49,381) - - (244) (3,105) 66,725 175,790 50,813 (49,381) - - (244) (3,105) 173,873 Labors 673,062 102,315 (4,297) - - (145,228) (29,604) 596,248 Employee benefits 86,297 11,439 (43,524) - - (783) (1,028) 52,401 Civil Civil and administrative claims 336,962 94,500 (20,581) - - (22,452) (534) 387,895 Easements 127,010 286 (543) (13,748) 667 (2,119) - 111,553 Expropriations and property 118,757 4,634 (1,217) 6,673 5,202 (161) - 133,888 Customers 4,956 299 (1,275) - - (7) - 3,973 Environmental 4,071 3,108 (5) - - - - 7,174 591,756 102,827 (23,621) (7,075) 5,869 (24,739) (534) 644,483 Regulatory 79,808 10,955 (1,033) - - (1,031) - 88,699 1,606,713 278,349 (121,856) (7,075) 5,869 (172,025) (34,271) 1,555,704 (a) Reclassification mainly to Liabilities associated with assets classified as held for sale (Note 40). Income Balances as of Provision for litigations Construction cost Additions Transfers/ Balances as of January 1, 2019 Additions Reversals Additions/(Rev.) to assets Discharges Others December 31, 2019 Tax Cofins 102,603 4,307 (2,626) - - - - 104,284 Others 54,494 4,841 (14,258) - - (1,258) 27,687 71,506 157,097 9,148 (16,884) - - (1,258) 27,687 175,790 Labors 612,782 194,550 (23) - - (134,247) - 673,062 Employee benefits 85,199 27,426 (18,747) - - (7,581) - 86,297 Civil Civil and administrative claims 492,934 101,438 (36,271) - - (221,139) - 336,962 Easements 118,147 711 (3,470) 12,456 1,012 (1,891) 45 127,010 Expropriations and property 116,401 2,844 (4,501) (2,935) 7,109 (161) - 118,757 Customers 5,209 390 (643) - - - - 4,956 Environmental 3,531 1,332 (566) - - (226) - 4,071 736,222 106,715 (45,451) 9,521 8,121 (223,417) 45 591,756 Regulatory 73,473 7,926 (546) - - (1,045) - 79,808 1,664,773 345,765 (81,651) 9,521 8,121 (367,548) 27,732 1,606,713 29.2 Details of provisions for legal claims and contingent liabilities The table below shows the details of the provisions for registered litigation and, in addition, the amounts of contingent liabilities that are present obligations arising from past events for which no provisions are recognized because it is not probable that an outflow of resources embodying economic benefits will be required to settle the obligation. Provisions Contingent liabilities Extent Description 12.31.2020 12.31.2019 12.31.2020 12.31.2019 Tax Cofins Requirement of the Federal Revenue Service for the period from August 1995 to December 1996, due to the termination of a judicial decision that has recognized the Company's exemption from Cofins. 107,148 104,284 6,554 6,415 INSS Tax requirements related to the social security contribution. 29,405 30,744 100,165 117,018 Federal taxes Administrative requirements and questions from the Federal Revenue of Brazil. - - 84,027 105,800 ICMS Copel Distribution received tax deficiency notice 6.587.156-4 from the State of Paraná for allegedly failing to pay ICMS (VAT) tax on the 'metered demand' highlighted in the electricity bills issued to a major consumer between May 2011 and December 2013. - - 97,404 87,657 IPTU Tax Requirement on Urban Territorial Property on properties affected by the public electricity service. - - 98,459 87,006 ISS City halls tax requirement as ISS on construction services provided by third parties. - - 73,094 65,443 Others Taxes, fees and other federal, state and municipal taxes in which the Company discusses the levy or not, as well as its bases and amounts for payment 37,320 40,762 116,920 159,207 173,873 175,790 576,623 628,546 Labors Charging of overtime, hazardous work, transfer surcharge, equalization / salary adjustment, among others, by employees and former employees of Copel; collection of indemnity installments and others, by ex-employees of contractors and outsourced companies (subsidiary responsibility). 596,248 673,062 345,080 419,917 Employee benefits Labor claims filed by former retired employees against Fundação Copel, which will consequently cause repercussions for the Company and its wholly-owned subsidiaries, to the extent that additional contributions are required. 52,401 86,297 9,210 21,338 Regulatory Dispatch Aneel nº 288/2002 Legal actions against Aneel Dispatch No. 288/2002 involving the companies Companhia Estadual de Energia Elétrica - CEEE and Dona Francisca Energética S.A. 70,188 57,000 - - ESBR ESBR filed Ordinary Lawsuit No. 10426-71.2013.4.01.4100 against ANEEL in the Federal Court of Rondônia, whose ruling: (i) acknowledged the exclusion of liability for the 535-day schedule overrun in the construction of the Jirau Hydropower Station; (ii) declares any obligations, penalties and costs imposed on ESBR as a result of the schedule overrun to be unenforceable, and (iii) annuls ANEEL Resolution 1,732/2013, which had recognized a schedule overrun of only 52 days. An appeal has been brought by ANEEL, pending judgment by the Federal Court of the 1st Region. The practical consequence of the ruling was, at the time it exempted ESBR, to expose the distributors with whom it entered into power trading contracts (CCEARs) to the Short-Term Market and to the high value of the Settlement Price of the Differences (Preço de Liquidação das Diferenças - PLD, in Portuguese) in the period, including Copel DIS. This occurred because the rules for the sale of electricity require that all energy consumed should have a corresponding contractual coverage. If the lawsuits are judged unfavorably against Copel, the amount will be classified as Sectorial Financial - - 942,640 1,034,593 Colíder Discussion on the value of the Tariff for use of the transmission system - TUST and monetary adjustment on energy values ​​referring to the exclusion of liability period. - - 216,353 98,723 Others Aneel's notifications about possible breaches of regulatory standards 18,511 22,808 - 8,104 88,699 79,808 1,158,993 1,141,420 Provisions Contingent liabilities Extent Description 12.31.2020 12.31.2019 12.31.2020 12.31.2019 Civil Tobacco growers Actions whose main cause is the lack of electricity causing loss of production. 50,330 48,977 41,258 34,792 Department of Roads and Roadworks The Department of Roads and Roadworks (Departamento de Estradas e Rodagens - DER, in Portuguese) - issued a tax assessment notice to Copel Distribuição which, in turn, filed a lawsuit challenging DER's Charge for Use or Occupancy of Highway Domain Range, since the Company understands that this charge is unconstitutional because it has a confiscatory nature. - - 95,669 85,277 Arbitration Discussion by arbitration under secrecy and confidentiality, in the discovery phase, with no decision having been handed down to date. 125,719 119,579 510,543 485,607 PIS / COFINS credit on ICMS Referring to estimated contingent liability, as per Management’s judgment and the opinion of its legal counsel, regarding the adventitious filing of claims by consumers in connection with the recognized tax credit, as detailed in Note 13.2.1, referring to the period infringing the tax neutrality rule, between the 11th and the 16th years, of a total of 16 years considered in the action. On February 9, 2021, Aneel opened Public Consultation 005/2021 to obtain subsidies until March 29, 2020, in order to improve the proposal to return these tax credits to consumers. Aneel's technical areas prepared a technical note to the aforementioned Public Consultation, delimiting its scope for economic and financial analysis, but without discussing the legal aspects brought up in the scope of Grant 005/2020 and that permeate the theme. The Company and its legal advisors evaluated the documents made available at Public Consultation 005/2021 and are working on preparing their contributions in order to solidify their understanding and safeguard their rights. - - 1,755,112 - Civil and administrative law Other actions involving billing, supposed irregular procedures, administrative contracts and contractual fines, indemnity for accidents with the electric power network and accident with vehicles. 133,560 139,893 282,794 300,061 Indemnification to third parties (civil) Actions for indemnity for resulting from damages caused during the construction of power plants 82,146 28,513 38,127 26,104 Easements Discussion between the amount determined by Copel for payment and the amount claimed by the property owner and/or when when the owner's documentation supporting title to the property may not be registered (when probate proceedings are still in progress, properties have no registry number with the land registry, etc.), intervention in third-party adverse possession, either as a confronter, or in case of a property where there are areas of easement of passage, in order to preserve the limits and boundaries of expropriated areas. 110,652 127,010 26,001 24,635 Expropriations and property Discussion between the amount assessed by Copel for payment and the amount claimed by the owner, and / or when the owner's documentation does not present conditions for registration (inventories in progress, properties without registration, among others); actions for repossession of real estate owned by the concessionaire; intervention in the adverse possession of third parties, as a confrontant, in order to preserve the limits and confrontations of the expropriated areas. 86,207 80,079 138,341 120,760 Indemnification to third parties (expropriations) Expropriation lawsuit for construction of electric substation and expropriation of property flooded of power plant. 44,775 38,678 45,196 36,807 Consumers Lawsuits seeking compensation for damages caused in household appliances, industrial and commercial machines, lawsuits claiming damages for pain and suffering caused by service interruption and lawsuits filed by industrial consumers, challenging the lawfulness of the increase in electricity prices while Plano Cruzado (anti-inflation economic plan) was in effect and claiming reimbursement for the amounts paid by the Company. 3,920 4,956 3,768 - Environmental Public civil and class actions whose purpose is to obstruct the progress of environmental licensing for new projects or to recover permanent preservation areas located around the hydroelectric power plant dams unlawfully used by private individuals. If the outcome of the lawsuits is unfavorable to the Company, Management estimates only the cost to prepare new environmental studies and to recover the areas owned by Copel GeT. They also include the Commitment Agreements (Termos de Ajuste de Conduta - TAC, in Portuguese), which refer to the commitments agreed-upon and approved between the Company and the relevant bodies, for noncompliance with any condition provided for by the Installation and Operating Licenses. 7,174 4,071 180,068 159,885 644,483 591,756 3,116,877 1,273,928 1,555,704 1,606,713 5,206,783 3,485,149

30 Equity

30 Equity	12 Months Ended
	Dec. 31, 2020
EQUITY
Equity	30 Equity 30.1 Capital Capital consists of common and preferred shares. Each common share entitles its holder to one vote in the general shareholders’ meetings. Preferred shares do not have voting rights and have two classes “A” and “B”. According to Article 17 and following paragraphs of Federal Law No. 6,404/76, dividends paid to preferred shares must be at least 10% higher than those paid to common shares. Class “A” preferred shares have priority in the reimbursement of capital and in the distribution of minimum dividends of 10% p.a. (non-cumulative), calculated based on the capital represented by this class of shares. Class “B” preferred shares have priority in the reimbursement of capital and the right to the distribution of dividends, calculated as 25% of adjusted profit or loss for the year, pursuant to the corporate legislation and to the Company’s by-laws, calculated proportionately to the capital represented by the shares of this class. Dividends for Class “B” have priority only over the common shares and are only paid out of the remaining profits payment of priority dividends of class “A” shares. On March 11, 2021, the General Meeting approved the submission of the proposal for comprehensive amendment and consolidation of the Company's bylaws, including, among other changes, the share split of the Company, in the proportion of one share for ten shares, so that, for every one share issued by the Company, nine new shares of the same class and type will be credited. At December 31, 2020, paid-in capital is R$ 10,800,000 (R$ 10,800,000 as at December 31, 2019). It includes shares (with no par value) and the main shareholders are presented below, already considering the adjusted number of shares after the split approved by Management: Number of shares in units Shareholders Common Class "A” Preferred Class “B” preferred Total in share % in share % in share % in share % State of Paraná 850,285,980 58.63 - - - - 850,285,980 31.07 BNDES 382,987,750 26.41 - - 272,820,060 21.26 655,807,810 23.96 Eletrobras 15,307,740 1.06 - - - - 15,307,740 0.56 Free float: B3 197,200,880 13.59 767,830 23.50 774,780,030 60.40 972,748,740 35.56 NYSE 1,163,450 0.08 - - 233,148,470 18.17 234,311,920 8.56 Latibex - - - - 1,721,110 0.13 1,721,110 0.06 City Halls 1,783,930 0.12 93,260 2.85 34,710 - 1,911,900 0.07 Other shareholders 1,581,070 0.11 2,406,430 73.65 471,050 0.04 4,458,550 0.16 1,450,310,800 100.00 3,267,520 100.00 1,282,975,430 100.00 2,736,553,750 100.00 30.2 Equity valuation adjustments Fair values of fixed assets – deemed costs – were recognized on the first-time adoption of IFRS. The line item “Equity value adjustments” was the balancing item of this adjustment, net of deferred income tax and social contribution. The realization of such adjustments is recorded in the retained earnings line item, to the extent of the depreciation or possible disposal of the measured fixed assets. Adjustments arising from the changes in fair value involving financial assets, as well as actuarial gains and losses, are also recorded in this line item. Balance as of January 1, 2019 785,610 Actuarial liabilities Post employment benefits (186,628) Taxes on adjustments 63,444 Realization of equity evaluation adjustment Deemed cost of fixed assets (100,342) Taxes on adjustments 34,116 Attributed to non-controlling interest (4,273) Balance as of December 31, 2019 591,927 Adjusts to actuarial liabilities Post employment benefits (271,345) Taxes on adjustments 92,190 Realization of equity evaluation adjustment Deemed cost of fixed assets (90,347) Taxes on adjustments 30,717 Attributed to non-controlling interest 207 Balance as of December 31, 2020 353,349 30.3 Legal reserve and profit retention reserve The amount of 5% of profit for the year is allocated to the legal reserve, before any other allocation, limited to 20% of capital. The profit retention reserve is earmarked for covering the Company's investment program, according to Article 196 of Law No. 6,404/1976. It is funded by retaining the remaining profit or loss after setting up the legal reserve, interest on capital and dividends proposed. 30.4 Proposed dividend distribution Parent Company Restated Restated 12.31.2020 12.31.2019 12.31.2018 Calculation of minimum mandatory dividend (25%) Net income for the year 3,904,202 1,989,946 1,407,063 Legal Reserve (5%) (195,210) (99,497) (70,353) Realization of equity evaluation adjustment 59,630 66,226 67,086 Calculation basis for minimum mandatory dividends 3,768,622 1,956,675 1,403,796 (1) Minimum mandatory dividend 942,156 489,169 350,949 (2) Interest on own capital - gross value 807,500 643,000 280,000 Tax on interest on own capital (76,401) (56,584) (27,593) (3) Interest on own capital, net 731,099 586,416 252,407 (4)Complement to reach the mandatory minimum 211,057 - 98,542 (5) Proposed additional dividend from non-capitalized earnings reserve (30.4.1) 1,507,449 - - (6) Total proposed distribution, net 2,435,463 586,416 350,949 (7) Total proposed distribution 2,526,006 643,000 378,542 Gross value of dividends per share: Ordinary shares 0.88128 0.22423 0.13195 Class “A” preferred shares 1.27172 0.39466 0.28905 Class “B” preferred shares 0.96941 0.24669 0.14515 Gross value of dividends per class of shares: Ordinary shares 1,278,126 325,210 191,369 Class “A” preferred shares 4,155 1,291 950 Class “B” preferred shares 1,243,725 316,499 186,223 The gross value per share presented were calculated based on the new number of shares, after the share split approved at the General Meeting, as described in Note 30.1. In accordance with the legal and statutory provisions in effect, the basis for calculating mandatory dividends is obtained from net income, less the quota allocated to the legal reserve. However, Management decided to add to the calculation basis the realization of the equity valuation adjustments, which is dealt with in IAS 16, 40 and IFRS 1, in order to void the effect of the increase in depreciation expense arising from the adoption accounting standards, as well as IAS 16 - Property, Plant and Equipment. This procedure reflects the Company's shareholder remuneration policy, which will be practiced during the realization of the entire reserve for equity valuation adjustments. 30.4.1 Additional proposed dividend from non-capitalized revenue reserve Considering that Copel has profit retention reserves corresponding to the allocation of prior-year profits that have not yet been capitalized, that a relevant portion of the profit for 2020 has not yet been realized financially (reflecting the final and unappealable decision for the lawsuit that recognized the right of Copel DIS to exclude from the PIS and COFINS calculation basis the full amount of ICMS separately stated in the sales invoices) and, finally, the need to allocate part of the profit for 2020 to the investment program expected for 2021, the payment of the proposed additional dividend will be made with a balance of profit reserves from previous non-capitalized periods. 30.5 Earnings per share – basic and diluted Parent Company Continuing Discontinued Continuing Discontinued Restated Continuing Discontinued Restated operations operations 12.31.2020 operations operations 12.31.2019 operations operations 12.31.2018 Basic and diluted numerator Basic and diluted earnings allocated by classes of shares, allocated to controlling shareholders: Common shares 1,935,144 40,607 1,975,751 1,051,809 (44,707) 1,007,102 662,546 49,688 712,234 Class “A” preferred shares 5,783 100 5,883 2,920 (111) 2,809 1,652 124 1,776 Class “B” preferred shares 1,883,054 39,514 1,922,568 1,023,538 (43,503) 980,035 644,703 48,350 693,053 3,823,981 80,221 3,904,202 2,078,267 (88,321) 1,989,946 1,308,901 98,162 1,407,063 Basic and diluted denominator Weighted average of shares (in thousands): Common shares 1,450,310,800 1,450,310,800 1,450,310,800 1,450,310,800 1,450,310,800 1,450,310,800 1,450,310,800 1,450,310,800 1,450,310,800 Class “A” preferred shares 3,268,067 3,268,067 3,268,067 3,273,682 3,273,682 3,273,682 3,286,270 3,286,270 3,286,270 Class “B” preferred shares 1,282,974,883 1,282,974,883 1,282,974,883 1,282,969,268 1,282,969,268 1,282,969,268 1,282,956,680 1,282,956,680 1,282,956,680 2,736,553,750 2,736,553,750 2,736,553,750 2,736,553,750 2,736,553,750 2,736,553,750 2,736,553,750 2,736,553,750 2,736,553,750 Basic and diluted earnings per share attributable to controlling shareholders Common shares 1.33430 0.02800 1.36229 0.72523 (0.03083) 0.69440 0.45683 0.03426 0.49109 Class “A” preferred shares 1.76982 0.03080 1.80062 0.89086 (0.03391) 0.85790 0.50251 0.03769 0.54020 Class “B” preferred shares 1.46773 0.03080 1.49852 0.79778 (0.03391) 0.76388 0.50251 0.03769 0.54020 The results presented were calculated based on the new number of shares, after the share split approved at the General Meeting, as described in Note 30.1.

31 Net Operating Revenue

31 Net Operating Revenue	12 Months Ended
	Dec. 31, 2020
Net Operating Revenue [Abstract]
Net Operating Revenue	31 Net Operating Revenue Net revenues Gross PIS/Pasep Sectorial Service tax Restated Restated revenues and Cofins ICMS (VAT) charges (ISSQN) 12.31.2020 12.31.2019 12.31.2018 Electricity sales to final customers 9,524,897 (737,647) (1,960,998) (173,428) - 6,652,824 6,426,016 5,548,584 Electricity sales to distributors 4,330,982 (467,817) (21,637) (61,698) - 3,779,830 2,865,866 2,765,916 Use of the main distribution and transmission grid 8,780,612 (667,419) (2,118,380) (1,622,217) - 4,372,596 4,138,771 3,469,060 Construction income 1,414,067 - - - - 1,414,067 1,132,884 1,097,313 Fair value of assets from the indemnity for the concession 57,341 - - - - 57,341 36,646 47,499 Distribution of piped gas 679,304 (60,774) (115,640) - (235) 502,655 843,183 557,186 Sectorial financial assets and liabilities result 746,052 (69,113) - - - 676,939 18,631 893,688 Other operating revenue 406,539 (35,771) (65) - (4,269) 366,434 407,248 171,218 Recovery of Pis/Pasep and Cofins on ICMS - 810,563 - - - 810,563 - - 25,939,794 (1,227,978) (4,216,720) (1,857,343) (4,504) 18,633,249 15,869,245 14,550,464 31.1 Revenue by type and/or class of customers Restated Restated 12.31.2020 12.31.2019 12.31.2018 Electricity sales to final customers 9,524,897 10,481,794 10,104,045 Residential 3,098,969 3,336,432 3,175,290 Industrial 970,638 1,276,105 1,419,240 Trade, services and other activities 1,701,260 2,179,510 2,136,087 Rural 613,419 631,527 572,361 Public entities 195,259 279,495 262,705 Public lighting 233,558 274,250 278,645 Public service 290,482 332,414 316,307 Free consumers 1,729,603 1,431,274 1,179,314 Donations and grants 691,709 740,787 764,096 Electricity sales to distributors 4,330,982 3,301,336 3,136,244 Bilateral contracts 2,386,929 1,998,617 2,002,077 Regulated contracts 916,377 854,239 385,157 Electric Energy Trade Chamber - CCEE 933,369 357,076 663,024 Interest (Note 10.3) 94,307 91,404 85,986 Use of the main distribution and transmission grid 8,780,612 8,270,996 6,867,274 Residential 2,788,725 2,585,892 2,222,621 Industrial 1,273,320 1,280,168 1,110,089 Trade, services and other activities 1,628,098 1,713,632 1,407,156 Rural 548,682 467,044 362,778 Public entities 180,814 217,027 185,383 Public lighting 205,904 206,492 184,530 Public service 195,597 174,414 141,556 Free consumers 1,164,020 1,052,535 795,105 Concessionaires and generators 61,720 62,414 80,329 Operating and maintenance income - O&M and interest income 733,732 511,378 377,727 Construction income 1,414,067 1,132,884 1,097,313 Power distribution service concession 1,154,488 904,023 741,855 Power gas distribution service concession 7,438 12,153 13,478 Power transmission concession(a) 252,141 216,708 341,980 Fair value of assets from the indemnity for the concession 57,341 36,646 47,499 Distribution of piped gas 679,304 1,003,790 753,222 Sectorial financial assets and liabilities result 746,052 25,057 985,344 Other operating revenue 406,539 438,876 199,788 Leasing and rent (31.2) 176,452 141,315 130,007 Fair value in the purchase and sale of power in the active market 137,463 204,876 - Income from rendering of services 44,182 51,780 39,705 Other income 48,442 40,905 30,076 GROSS OPERATING REVENUE 25,939,794 24,691,379 23,190,729 (-) Pis/Pasep and Cofins (2,038,541) (2,243,383) (2,094,148) Recovery of Pis/Pasep and Cofins on ICMS (Note 13.2.1) 810,563 105,184 - (-) ICMS (VAT) (4,216,720) (4,518,791) (4,085,153) (-) Service tax (ISSQN) (4,504) (3,333) (3,402) (-) Regulatory charges (31.3) (1,857,343) (2,161,811) (2,457,562) NET OPERATING REVENUE 18,633,249 15,869,245 14,550,464 (a) The balance contains the amount of construction revenue, the construction margin and the efficiency gain or loss as detailed in Note 11.3 31.2 Leases and rentals 31.2.1 Revenue from leases and rentals Restated Restated 12.31.2020 12.31.2019 12.31.2018 Equipment and framework 175,673 140,053 128,734 Facilities sharing 415 1,046 1,003 Real estate 364 216 270 176,452 141,315 130,007 31.2.2 Receivables from leases Less than Over Total 1 year 1 to 5 years 5 years 12.31.2020 Facilities sharing 1,410 5,640 19,462 26,512 31.3 Regulatory charges 12.31.2020 12.31.2019 12.31.2018 Energy Development Account - "CDE " - Power distribution service concession (31.3.1) 1,530,998 1,654,157 1,840,283 Other charges - rate flags 81,159 280,286 423,098 Research and development and energy efficiency - R&D and EEP 144,474 127,432 123,306 Global Reversion Reserve - RGR quota 62,057 63,918 48,512 Energy Development Account - "CDE "- Power transmission concession 27,315 25,271 12,211 Inspection fee 11,340 10,747 10,152 1,857,343 2,161,811 2,457,562 31.3.1 Energy Development Account - CDE - power distribution concession The CDE was created by Law 10,438/2002, amended by Law 12,783/2013 and, in order to meet its objectives, it has among its sources of funds, quotas paid by agents that negotiate energy with end consumers, at a charge included in the tariffs. Currently, the Company makes payments for the “CDE USO” charge, intended to cover the CDE's objectives set forth by law. The annual quotas for each distributor are defined by ANEEL through resolutions enacted by it. The balance is as follows: Resolutions Period 12.31.2020 CDE USO Resolution No. 2,664/2019 January to December 1,531,713 (-) Preliminary injunctions January to December (715) 1,530,998 Resolutions Period 12.31.2019 CDE USO Resolution No. 2,510/2018 January to June 1,269,498 (-) Preliminary injunctions January to June (3,346) 1,266,152 CONTA ACR Resolution No.2,231/2017 January to February 98,725 Resolution No.2,521/2019 March to August 296,174 Return - Order No. 2,755 / 2019 (46,722) 348,177 CDE ENERGIA Resolution No. 2,510/2018 January to March 41,431 (-) Preliminary injunctions January to March (1,603) 39,828 1,654,157 Resolutions Period 12.31.2018 CDE USO Resolution No. 2,368/2018 January to August 594,972 Resolution No. 2,446/2018 September to December 445,075 (-) Preliminary injunctions January to December (2) 1,040,045 CONTA ACR Resolution No.2,231/2017 January to December 557,981 557,981 CDE ENERGIA Resolution No. 2,202/2017 January to May 100,692 Resolution No. 2,358/2017 June to December 145,007 (-) Preliminary injunctions January to December (3,442) 242,257 1,840,283 Injunctions As a result of preliminary decisions in favor of the Brazilian Association of Large Industrial Energy Consumers and Free Consumers - Abrace, the National Association of Energy Consumers - Anace and other consumers, which are challenging in court the tariff components of CDE Uso and CDE Energia quotas, ANEEL ratified the tariff calculation, deducting these charges of these consumers' tariffs, while the injunctions granted remained effective. 31.4 Copel DIS anual tariff adjustment ANEEL approved the result of Copel DIS's Annual Tariff Adjustment through Homologatory Resolution No. 2,704, dated June 23, 2020, authorizing average adjustment of 0.41 (3.41% in 2019) applied to consumers and whose application occurred in full to tariffs as from June 24, 2020. The tariff recomposition includes: 0.79% resulting from the update of Parcel B (operating costs, depreciation and remuneration); 7.82% related to the updating of Parcel A (energy, transmission, charges and sunk revenue); 1.81% related to the inclusion of financial components; and -10,01% that reflect the withdrawal of financial components from the previous tariff process. There was a reduction for the categories of customers: residential, 0.95%; commerce and services at low voltage, of 0.83%; and for public lighting, 0.93%. High voltage customers had an average increase of 1.13%. This readjustment already considers the impacts of Covid Account, according to Decree 10,350/2020 and Aneel Normative Resolution 885/2020, in the amount of R$ 536,359, whose funds were received on July 31, 2020.

32 Operating Costs and Expenses

32 Operating Costs and Expenses	12 Months Ended
	Dec. 31, 2020
VR/VC-1
Operating Costs and Expenses	32 Operating Costs and Expense General and Other Operational Selling administrative operating costs expenses expenses expenses, net 12.31.2020 Electricity purchased for resale (32.1) (6,829,530) - - - (6,829,530) Charge of the main distribution and transmission grid (1,525,567) - - - (1,525,567) Personnel and management (32.2) (1,143,323) (12,567) (446,005) - (1,601,895) Pension and healthcare plans (Note 23.3) (161,257) (1,615) (65,762) - (228,634) Materials and supplies (65,357) (95) (7,228) - (72,680) Materials and supplies for power electricity (404,496) - - - (404,496) Natural gas and supplies for gas business (354,701) - - - (354,701) Third-party services (32.3) (406,109) (4,913) (147,019) - (558,041) Depreciation and amortization (945,595) - (48,963) (15,355) (1,009,913) Credit losses, provisions and reversals(32.4) 40,143 (128,466) - (148,971) (237,294) Construction cost (32.5) (1,417,504) - - - (1,417,504) Other operating costs and expenses, net (32.6) (134,526) (12,169) (94,431) (92,149) (333,275) (13,347,822) (159,825) (809,408) (256,475) (14,573,530) General and Other Operational Selling administrative operating Restated costs expenses expenses expenses, net 12.31.2019 Electricity purchased for resale (32.1) (6,105,274) - - - (6,105,274) Charge of the main distribution and transmission grid (1,249,275) - - - (1,249,275) Personnel and management (32.2) (945,312) (13,937) (366,133) - (1,325,382) Pension and healthcare plans (Note 23.3) (169,476) (1,914) (66,936) - (238,326) Materials and supplies (74,071) (253) (5,873) - (80,197) Materials and supplies for power electricity (49,352) - - - (49,352) Natural gas and supplies for gas business (585,233) - - - (585,233) Third-party services (32.3) (371,835) (7,711) (146,462) - (526,008) Depreciation and amortization (892,813) (3) (43,190) (14,720) (950,726) Credit losses, provisions and reversals(32.4) 120,689 (140,348) - (240,392) (260,051) Construction cost (32.5) (1,091,396) - - - (1,091,396) Other operating costs and expenses, net (32.6) (50,800) (11,606) (82,695) (67,394) (212,495) (11,464,148) (175,772) (711,289) (322,506) (12,673,715) General and Other Operational Selling administrative operating Restated costs expenses expenses expenses, net 12.31.2018 Electricity purchased for resale (32.1) (6,361,178) - - - (6,361,178) Charge of the main distribution and transmission grid (1,176,780) - - - (1,176,780) Personnel and management (32.2) (978,878) (18,460) (360,447) - (1,357,785) Pension and healthcare plans (Note 23.3) (176,102) (2,447) (65,201) - (243,750) Materials and supplies (67,494) (613) (11,887) - (79,994) Materials and supplies for power electricity (19,729) - - - (19,729) Natural gas and supplies for gas business (412,618) - - - (412,618) Third-party services (32.3) (325,091) (7,607) (148,403) - (481,101) Depreciation and amortization (657,445) (5) (25,268) (13,574) (696,292) Credit losses, provisions and reversals(32.4) 18,920 (69,187) - (230,837) (281,104) Construction cost (32.5) (1,052,208) - - - (1,052,208) Other operating costs and expenses, net (32.6) (164,305) (7,095) (95,638) (5,593) (272,631) (11,372,908) (105,414) (706,844) (250,004) (12,435,170) 32.1 Electricity purchased for resale 12.31.2020 12.31.2019 12.31.2018 Purchase of Energy in the Regulated Environment - CCEAR 3,107,956 2,880,115 2,599,345 Itaipu Binacional 1,766,058 1,316,524 1,850,021 Electric Energy Trade Chamber - CCEE 1,176,798 1,405,497 1,272,177 Bilateral contracts 1,087,439 754,070 928,741 Program for incentive to alternative energy sources - Proinfa 221,406 268,063 228,295 Micro and mini generators and repurchase of customers 161,324 52,871 12,373 (-) PIS/Pasep/Cofins taxes on electricity purchased for resale (691,451) (571,866) (529,774) 6,829,530 6,105,274 6,361,178 32.2 Personnel and management 12.31.2020 12.31.2019 12.31.2018 Personnel Salaries and management fees 696,837 746,415 794,966 Social charges on payroll 227,485 241,025 261,459 Meal and education allowance 107,052 113,021 113,177 Voluntary retirement program 66,905 43,517 69,289 1,098,279 1,143,978 1,238,891 Management Salaries and management fees 18,465 19,867 21,422 Social charges on payroll 3,233 5,745 5,695 Other expenses 237 248 251 21,935 25,860 27,368 Provisions for performance and profit sharing of employees and administrators 481,681 155,544 91,526 1,601,895 1,325,382 1,357,785 32.3 Third party services Restated Restated 12.31.2020 12.31.2019 12.31.2018 Maintenance of electrical system 206,688 164,510 144,163 Maintenance of facilities 97,889 102,295 88,186 Consumer service 54,713 35,548 15,470 Meter reading and bill delivery 48,895 45,515 43,968 Communication, processing and transmission of data 42,244 51,919 47,954 Consulting and audit 41,043 20,456 40,694 Other services 66,569 105,765 100,666 558,041 526,008 481,101 32.4 Credit losses, provisions and reversals Restated Restated 12.31.2020 12.31.2019 12.31.2018 Provision for litigations (a) 150,269 243,848 206,792 Impairment of assets Power generation concession contract (Note 10.5) (10,502) (2,945) (4,758) Property, plant and equipment - generation segment (Note 17.5) (37,609) (117,744) (14,162) Expected credit losses (Trade accounts and Other receivables) 128,466 140,348 83,453 Tax credits estimated losses (1,298) (3,456) 9,779 Provision for losses on equity interests (Note 16.1) 7,968 - - 237,294 260,051 281,104 a) The main variations in provisions for litigations occurred due to the review of the assessment of the Company's legal advisors, mainly in labor claims and civil action for compensation to third parties. The details of the actions are shown in Note 29. 32.5 Construction costs 12.31.2020 12.31.2019 12.31.2018 Materials and supplies 781,807 548,336 507,899 Third party services 460,952 395,607 400,680 Personnel 140,108 125,777 124,469 Others 34,637 21,676 19,160 1,417,504 1,091,396 1,052,208 32.6 Other operating costs and expenses, net Restated Restated 12.31.2020 12.31.2019 12.31.2018 Financial offset for the use of water resources 63,841 103,737 105,310 Collection charge 49,903 51,156 44,682 Net losses in the decommissioning and disposal of assets 44,020 38,151 70,640 Compensation 38,423 63,628 31,045 Taxes 37,847 28,651 78,323 Donations, contributions, grants, tax incentives (a) 22,136 12,829 12,314 Leasing and rent 9,705 8,536 34,226 Advertising and publicity Associação das Emissoras de Radiodifusão do Paraná - AERP 11,455 10,862 10,753 Publicity 9,598 7,206 6,127 Talento Olímpico Paranaense - TOP 4,750 4,719 4,537 Sponsorship 1,126 2,460 2,685 Other net income, costs and expenses (b) 40,471 (119,440) (128,011) 333,275 212,495 272,631 (a) The balance includes the Company's social investments in education, culture, health, sports, among others, including incentive donations used as a tax benefit. (b) The 2019 balance includes R$ 97,664 of water rate reversal (TCFRH).

33 Financial Results

33 Financial Results	12 Months Ended
	Dec. 31, 2020
Financial Result [Abstract]
Financial Results	33 Financial Results Restated Restated 12.31.2020 12.31.2019 12.31.2018 Financial income Recognition of tax credit (Note 13.2.1) 944,549 38,434 55,096 Interest and monetary variation of CRC transfer (Note 8.1) 341,964 192,724 214,627 Arrears charges on bills 271,966 215,522 210,466 Return on financial investments 80,704 119,622 98,424 Exchange variation on loan collateral 35,089 - - Derivatives fair value - forward contract (Note 35.2.3 - b) 24,511 - - Remuneration of net sectorial assets and liabilities (Note 9.2) 20,168 47,378 43,966 Monetary variation over the Itaipu power purchase 42,729 26,332 24,658 Monetary variation and adjust to present value of accounts payable related to the concession (Note 26.1) 2,322 1,462 1,047 Other financial income 75,666 88,032 148,823 1,839,668 729,506 797,107 ( - ) Financial expenses Monetary and exchange variation and debt charges 607,569 853,880 829,728 Monetary variation and adjust to present value of accounts payable related to the concession (Note 26.1) 192,848 100,455 94,319 Monetary variation over the Itaipu power purchase 75,478 29,547 50,203 Interest on R&D and EEP (Note 25.2) 12,550 24,570 25,407 Remuneration of net sectorial assets and liabilities (Note 9.2) 62 5,753 23,747 Interest and monetary variation of CRC transfer (Note 8.1) - 8,495 25,830 PIS/Pasep/Cofins taxes on interest on capital 27,748 71,549 13,636 Other financial expenses 57,142 90,621 147,382 973,397 1,184,870 1,210,252 Net 866,271 (455,364) (413,145)

34 Operating Segments

34 Operating Segments	12 Months Ended
	Dec. 31, 2020
Disclosure of operating segments [abstract]
Operating Segments	34 Operating Segments Operating segments are business activities that generate revenues and incur expenses, whose operating results are regularly reviewed by the executive boards of the Company and subsidiaries and by key strategic decision-makers responsible for allocating funds and assessing performance. 34.1 Products and services from which the reportable segments have their revenues generated The Company operates in reportable segments identified by Management, through the chief officers of each business area, taking into consideration the regulatory environments, the strategic business units and the different products and services. These segments are managed separately, since each business and each company require different technologies and strategies. Until December 31, 2020, all sales have been to customers within the Brazilian territory, in addition, all noncurrent assets are also located in the national territory. The Company did not identify any customer who individually accounts for more than 10% of their total net revenue until December 31, 2020. The Company evaluates the performance of each segment, based on information derived from the accounting records. The accounting policies of the operating segments are the same as those described in Note 4 of these financial statements. 34.2 Company’s reportable segments The reportable segments of the Company, in accordance with IFRS 8, are: Power generation and transmission (GET) (GER) (TRA) Power distribution (DIS) - Telecommunications (TEL) GAS Power sale (COM) Holding Company (HOL) 34.3 Assets by reportable segment ASSETS Electric Energy TEL GAS HOL Reclassi- Intersegment operations Total 12.31.2020 GET DIS COM TOTAL ASSETS 20,945,910 20,407,088 1,053,099 1,565,593 749,434 4,733,847 (1,230,546) (1,439,761) 46,784,664 CURRENT ASSETS 3,137,219 6,198,414 390,695 666,654 245,028 2,543,995 (380,954) (1,393,620) 11,407,431 NON-CURRENT ASSETS 17,808,691 14,208,674 662,404 898,939 504,406 2,189,852 (849,592) (46,141) 35,377,233 Long term assets 5,561,545 7,915,662 660,229 136,527 358,719 2,007,064 (110,834) (438,633) 16,090,279 Investments 2,574,402 808 - - - 154,307 - - 2,729,517 Property, plant and equipment 9,420,859 - 224 734,172 - 24,500 (716,924) 32,629 9,495,460 Intangible assets 223,222 6,203,387 1,833 16,993 132,366 2,379 (10,587) 359,863 6,929,456 Right-of-use asset 28,663 88,817 118 11,247 13,321 1,602 (11,247) - 132,521 ASSETS Electric Energy TEL GAS HOL Intersegment operations Total 12.31.2019 GET DIS COM TOTAL ASSETS 19,457,551 13,434,522 690,372 1,527,098 904,993 3,183,677 (885,662) 38,312,550 CURRENT ASSETS 2,039,443 4,631,991 229,630 528,754 313,896 1,127,469 (961,987) 7,909,196 NON-CURRENT ASSETS 17,418,108 8,802,531 460,742 998,344 591,097 2,056,208 76,325 30,403,354 Long term assets 5,054,560 3,051,058 460,312 137,770 576,190 1,879,619 (296,879) 10,862,630 Investments 2,371,374 813 247 - - 150,746 - 2,523,179 Property, plant and equipment 9,735,093 - 53 833,974 - 22,983 - 10,592,103 Intangible assets 233,973 5,703,686 123 19,844 - 1,781 373,204 6,332,611 Right-of-use asset 23,108 46,974 7 6,756 14,907 1,079 - 92,831 34.4 Statement of income by reportable segment STATEMENT OF INCOME Electric Energy TEL GAS HOL Reclassi- Intersegment operations Total GET 12.31.2020 GER TRA DIS COM NET OPERATING REVENUES 4,030,979 1,186,215 12,363,459 2,420,657 386,634 535,206 - (355,843) (1,934,058) 18,633,249 Net operating revenues - third-parties 2,599,807 875,240 12,312,047 2,323,825 355,845 522,328 - (355,843) - 18,633,249 Net operating revenues - between segments 1,431,172 310,975 51,412 96,832 30,789 12,878 - - (1,934,058) - OPERATING COSTS AND EXPENSES (2,348,409) (536,968) (10,674,981) (2,262,053) (363,673) (452,495) (107,059) 203,779 1,968,329 (14,573,530) Energy purchased for resale (260,650) - (5,856,372) (2,239,388) - - - - 1,526,880 (6,829,530) Charges for use of the main transmission grid (489,921) - (1,370,814) - - - - - 335,168 (1,525,567) Personnel and management (277,905) (168,828) (994,037) (15,007) (82,817) (35,998) (27,303) - - (1,601,895) Pension and healthcare plans (38,196) (23,972) (146,422) (1,493) (11,207) (4,663) (2,681) - - (228,634) Materials and supplies (9,695) (3,466) (58,196) (28) (1,364) (580) (715) 1,364 - (72,680) Raw materials and supplies for generation (415,405) - - - - - - - 10,909 (404,496) Natural gas and supplies for gas business - - - - - (354,701) - - - (354,701) Third party services (118,562) (24,863) (405,854) (1,493) (66,426) (11,633) (32,025) 66,426 36,389 (558,041) Depreciation and amortization (583,958) (11,812) (374,851) (75) (147,190) (31,452) (2,345) 107,497 34,273 (1,009,913) Provision (reversal) for litigations (53,216) (24,529) (55,118) (62) 336 (85) (17,259) (336) - (150,269) Impairment of assets 48,111 - - - 54,945 - - (54,945) - 48,111 Other estimated losses, provisions and reversals (5,930) (4,149) (123,980) (839) (18,088) (238) - 18,088 - (135,136) Construction cost - (255,578) (1,154,488) - - (7,438) - - - (1,417,504) Other operating costs and expenses, net (143,082) (19,771) (134,849) (3,668) (91,862) (5,707) (24,731) 65,685 24,710 (333,275) EQUITY IN EARNINGS OF INVESTEES 9,629 176,848 - (93) - - 7,163 - - 193,547 PROFIT (LOSS) BEFORE FINANCIAL INCOME AND TAX 1,692,199 826,095 1,688,478 158,511 22,961 82,711 (99,896) (152,064) 34,271 4,253,266 Financial income 121,129 21,977 1,334,983 11,469 24,968 13,599 340,404 (24,939) (3,922) 1,839,668 Financial expenses (408,795) (97,417) (291,002) (96) (58,317) (14,363) (165,647) 58,317 3,923 (973,397) OPERATING PROFIT (LOSS) 1,404,533 750,655 2,732,459 169,884 (10,388) 81,947 74,861 (118,686) 34,272 5,119,537 Income tax and social contribution (337,564) (149,962) (878,278) (57,947) 2,357 (22,967) 125,293 43,108 (9,405) (1,285,365) NET INCOME(LOSS) FROM CONTINUING OPERATIONS 1,066,969 600,693 1,854,181 111,937 (8,031) 58,980 200,154 (75,578) 24,867 3,834,172 Result of discontinued operations - - - - - - - 75,578 - 75,578 NET INCOME (LOSS) 1,066,969 600,693 1,854,181 111,937 (8,031) 58,980 200,154 - 24,867 3,909,750 STATEMENT OF INCOME Electric Energy TEL GAS HOL Reclassi- Intersegment operations Total Restated GET 12.31.2019 GER TRA DIS COM NET OPERATING REVENUES 3,368,375 871,510 10,401,301 1,810,901 418,030 866,884 - (375,028) (1,492,727) 15,869,246 Net operating revenues - third-parties 2,233,367 643,596 10,352,690 1,773,765 375,030 865,826 - (375,028) - 15,869,246 Net operating revenues - between segments 1,135,008 227,914 48,611 37,136 43,000 1,058 - - (1,492,727) - OPERATING COSTS AND EXPENSES (1,659,225) (479,538) (9,579,915) (1,608,245) (604,616) (662,306) (59,232) 486,633 1,492,727 (12,673,717) Energy purchased for resale (262,288) - (5,424,207) (1,590,272) - - - - 1,171,493 (6,105,274) Charges for use of the main transmission grid (451,107) - (1,044,135) - - - - - 245,967 (1,249,275) Personnel and management (217,792) (139,662) (822,772) (13,041) (73,890) (36,932) (21,293) - - (1,325,382) Pension and healthcare plans (37,955) (25,027) (155,784) (1,481) (11,384) (4,122) (2,573) - - (238,326) Materials and supplies (10,987) (3,766) (64,419) (15) (1,955) (217) (793) 1,955 - (80,197) Raw materials and supplies for generation (50,388) - - - - - - - 1,036 (49,352) Natural gas and supplies for gas business - - - - - (585,233) - - - (585,233) Third party services (108,309) (38,092) (397,390) (1,718) (87,113) (12,971) (16,734) 87,113 49,206 (526,008) Depreciation and amortization (551,576) (12,987) (343,597) (44) (152,863) (30,480) (2,289) 143,108 - (950,728) Provision (reversal) for litigations (45,212) (24,398) (164,705) (156) (14,072) (292) (9,086) 14,072 - (243,849) Impairment of assets 117,648 - - - - - 3,041 - - 120,689 Other estimated losses, provisions and reversals 43,207 (41,350) (137,680) (4) (100,691) (1,063) (2) 100,691 - (136,892) Construction cost - (175,220) (904,023) - - (12,153) - - - (1,091,396) Other operating costs and expenses, net (84,466) (19,036) (121,203) (1,514) (162,648) 21,157 (9,503) 139,694 25,025 (212,494) EQUITY IN EARNINGS OF INVESTEES 14,840 85,752 - (280) - - 6,445 - - 106,757 PROFIT (LOSS) BEFORE FINANCIAL INCOME AND TAX 1,723,990 477,724 821,386 202,376 (186,586) 204,578 (52,787) 111,605 - 3,302,286 Financial income 80,632 20,637 355,152 3,004 20,760 53,625 217,057 (20,735) (626) 729,506 Financial expenses (457,528) (138,947) (273,909) (220) (53,857) (10,439) (304,453) 53,857 626 (1,184,870) OPERATING PROFIT (LOSS) 1,347,094 359,414 902,629 205,160 (219,683) 247,764 (140,183) 144,727 - 2,846,922 Income tax and social contribution (289,831) (54,695) (201,236) (69,854) 68,644 (74,791) (17,563) (36,334) - (675,660) NET INCOME(LOSS) FROM CONTINUING OPERATIONS 1,057,263 304,719 701,393 135,306 (151,039) 172,973 (157,746) 108,393 - 2,171,262 Result of discontinued operations - - - - - - - (108,393) - (108,393) NET INCOME (LOSS) 1,057,263 304,719 701,393 135,306 (151,039) 172,973 (157,746) - - 2,062,869 STATEMENT OF INCOME Electric Energy TEL GAS HOL Reclassi- Intersegment operations Total Restated GET 12.31.2018 GER TRA DIS COM NET OPERATING REVENUES 3,007,565 904,826 9,972,442 1,341,162 421,408 588,532 - (384,316) (1,301,155) 14,550,464 Net operating revenues - third-parties 2,116,875 680,567 9,932,267 1,341,162 364,741 582,895 - (384,316) (83,727) 14,550,464 Net operating revenues - between segments 890,690 224,259 40,175 - 56,667 5,637 - - (1,217,428) - OPERATING COSTS AND EXPENSES (1,619,431) (561,850) (9,474,473) (1,354,578) (369,201) (515,594) (57,993) 241,451 1,276,499 (12,435,170) Energy purchased for resale (417,918) - (5,577,719) (1,338,473) - - - - 972,932 (6,361,178) Charges for use of the main transmission grid (408,347) - (1,012,062) - - - - - 243,629 (1,176,780) Personnel and management (214,855) (147,139) (837,728) (13,734) (92,472) (34,896) (16,961) - - (1,357,785) Pension and healthcare plans (36,379) (25,884) (159,842) (1,507) (13,892) (3,881) (2,365) - - (243,750) Materials and supplies (11,637) (5,054) (60,379) (65) (1,763) (2,110) (749) 1,763 - (79,994) Raw materials and supplies for generation (25,367) - - - - - - - 5,638 (19,729) Natural gas and supplies for gas business - - - - - (412,618) - - - (412,618) Third party services (119,668) (33,489) (339,399) (1,700) (91,127) (17,034) (32,311) 91,127 62,500 (481,101) Depreciation and amortization (353,916) (11,386) (301,581) (16) (58,209) (22,759) (1,312) 52,887 - (696,292) Provision (reversal) for litigations 18,059 7,879 (222,057) 9 (12,844) (154) (10,528) 12,844 - (206,792) Impairment of assets 22,312 - - - - - 1,648 - (5,040) 18,920 Other estimated losses, provisions and reversals 55,457 (49,486) (77,985) (935) (12,749) (6,017) (14,266) 12,749 - (93,232) Construction cost - (277,259) (741,855) - - (13,478) - - (19,616) (1,052,208) Other operating costs and expenses, net (127,172) (20,032) (143,866) 1,843 (86,145) (2,647) 18,851 70,081 16,456 (272,631) EQUITY IN EARNINGS OF INVESTEES 5,514 123,676 - (15) - - 6,713 - - 135,888 PROFIT (LOSS) BEFORE FINANCIAL INCOME AND TAX 1,393,648 466,652 497,969 (13,431) 52,207 72,938 (51,280) (142,865) (24,656) 2,251,182 Financial income 119,196 29,163 335,377 6,065 16,808 29,454 305,344 (16,808) (27,492) 797,107 Financial expenses (517,832) (136,455) (308,319) (104) (41,713) (31,865) (243,169) 41,713 27,492 (1,210,252) OPERATING PROFIT (LOSS) 995,012 359,360 525,027 (7,470) 27,302 70,527 10,895 (117,960) (24,656) 1,838,037 Income tax and social contribution (327,598) (75,361) (148,244) 2,632 (2,853) (10,909) 41,957 40,827 8,383 (471,166) NET INCOME (LOSS) FROM CONTINUING OPERATIONS 667,414 283,999 376,783 (4,838) 24,449 59,618 52,852 (77,133) (16,273) 1,366,871 Result of discontinued operations - - - - - - - 77,133 - 77,133 NET INCOME (LOSS) 667,414 283,999 376,783 (4,838) 24,449 59,618 52,852 - (16,273) 1,444,004 34.5 Additions to noncurrent assets by reportable segment Electric Energy TEL GAS HOL Total 12.31.2020 GET DIS COM Contract assets - 1,278,578 - - 15,187 - 1,293,765 Property, plant and equipment 236,914 - 203 127,381 - 1,800 366,298 Intangible assets 7,397 - 1,741 808 - 1,045 10,991 Right-of-use asset 19,231 72,421 135 10,135 623 1,026 103,571 Electric Energy TEL GAS HOL Total 12.31.2019 GET DIS COM Contract assets - 917,577 - - 17,590 - 935,167 Property, plant and equipment 522,744 - 14 59,216 - 285 582,259 Intangible assets 4,272 - 3 486 - 271 5,032 Right-of-use asset 33,461 66,621 8 9,950 16,933 402 127,375 IFRS 16 Initial adoption 32,919 60,494 - 9,868 14,356 385 118,022 Additions for the period 542 6,127 8 82 2,577 17 9,353 Electric Energy TEL GAS HOL Total 12.31.2018 GET DIS COM Contract assets - 797,832 - - 15,618 - 813,450 Property, plant and equipment 1,160,967 - 4 308,242 - 267 1,469,480 Intangible assets 6,351 - - 1,235 - 3 7,589

35 Financial Instruments

35 Financial Instruments	12 Months Ended
	Dec. 31, 2020
Financial Instruments [Abstract]
Financial Instruments	35 Financial Instruments 35.1 Categories and determination of fair value of financial instruments 12.31.2020 12.31.2019 Restated Note Level Book value Fair value Book value Fair value Financial assets Fair value through profit or loss Cash and cash equivalents (a) 5 1 3,222,768 3,222,768 2,941,727 2,941,727 Bonds and securities (b) 6 1 751 751 2,429 2,429 Bonds and securities (b) 6 2 299,779 299,779 279,652 279,652 Accounts receivable - distribution concession (c) 10.1 and 10.2 3 1,149,934 1,149,934 1,161,203 1,161,203 Accounts receivable - generation concession (d) 10.4 3 81,202 81,202 69,182 69,182 Derivatives fair value - forward contracts (e) 12 3 23,308 23,308 - - Fair value in the purchase and sale of power (e) 12 3 689,531 689,531 460,635 460,635 Other temporary investments (f) 1 14,910 14,910 15,566 15,566 Other temporary investments (f) 2 7,475 7,475 12,168 12,168 5,489,658 5,489,658 4,942,562 4,942,562 Amortized cost Collaterals and escrow accounts (a) 197 197 147 147 Collateral and escrow deposits - STN (g) 21.1 133,521 113,477 98,433 94,671 Trade accounts receivable (a) 7 3,819,680 3,819,680 3,182,567 3,182,567 CRC Transferred to the Paraná State Government (h) 8 1,392,624 1,496,016 1,350,685 1,488,456 Sectorial financial assets (a) 9 346,930 346,930 473,989 473,989 Accounts receivable - concessions - bonus from the grant (i) 10.3 671,204 763,070 647,984 738,483 6,364,156 6,539,370 5,753,805 5,978,313 Total financial assets 11,853,814 12,029,028 10,696,367 10,920,875 Financial liabilities Fair value through profit or loss Fair value in the purchase and sale of power (e) 28 3 343,406 343,406 251,973 251,973 Derivatives fair value - forward contracts (e) 28 3 - - 1,203 1,203 343,406 343,406 253,176 253,176 Amortized cost Sectorial financial liabilities (a) 9 188,709 188,709 102,284 102,284 Ordinary financing of taxes with the federal tax authorities (g) 13.2 - - 18,063 18,001 Special Tax Regularization Program - Pert (g) 13.2 459,303 377,375 497,207 439,519 PIS and Cofins to be refunded to consumers (a) 13.2.1 3,927,823 3,927,823 - - Accounts payable to suppliers (a) 20 2,436,452 2,436,452 1,873,193 1,873,193 Loans and financing (g) 21 3,214,249 2,956,696 3,168,710 3,110,104 Debentures (j) 22 6,837,819 6,837,819 8,540,366 8,540,366 Accounts payable related to concession (k) 26 731,864 811,329 612,587 690,326 17,796,219 17,536,203 14,812,410 14,773,793 Total financial liabilities 18,139,625 17,879,609 15,065,586 15,026,969 Different levels are defined as follows: Level 1 : Obtained from quoted prices (not adjusted) in active markets for identical assets and liabilities; Level 2: obtained through other variables in addition to quoted prices included in Level 1, which are observable for the assets or liabilities; Level 3: obtained through assessment techniques which include variables for the assets or liabilities, which however are not based on observable market data. Determining fair values a) Equivalent to their respective carrying values due to their nature and terms of realization. b) Fair value is calculated based on information made c) The criteria are disclosed in Note 4.4 to the financial statements. d) The fair values of generation assets approximate their carrying amounts, according to Note 4.4 of these Financial Statements. e) The fair values of assets and liabilities are equivalent to their carrying amounts according to Note 4.15 of these Financial Statements. f) Investments in other companies, stated at fair value, which is calculated according to the price quotations published in an active market, for assets classified as level 1 and determined in view of the comparative assessment model for assets classified as level 2. g) The cost of the last borrowing taken out by the Company is used as Spread h) The Company based its calculation on the comparison with a long-term and post-fixed National Treasury Bond (NTN-B) maturing on August 15, 2026, which yields approximately 3.09% p.a. plus the IPCA inflation index. i) Receivables related to the concession agreement for providing electricity generation services under quota arrangements, having their fair value calculated by expected cash inflows, discounted at the rate j) Calculated from the Unit Price quotation (PU) for December 31, 2020, obtained from the Brazilian Association of Financial and Capital Markets (ANBIMA), net of unamortized financial cost. k) Actual net discount rate of 8.64% p.a., in line with the Company's estimated rate for long-term projects. 35.2 Financial risk management The Company's business activities are exposed to the following risks arising from financial instruments: 35.2.1 Credit risk Credit risk is the risk of the Company incurring losses due to a customer or counterparty in a financial instrument, resulting from failure in complying with their contractual obligations. Exposure to credit risk 12.31.2020 12.31.2019 Cash and cash equivalents (a) 3,222,768 2,941,727 Bonds and securities (a) 300,530 282,081 Pledges and restricted deposits linked (a) 133,718 98,580 Trade accounts receivable (b) 3,819,680 3,182,567 CRC Transferred to the Paraná State Government (c) 1,392,624 1,350,685 Sectorial financial assets (d) 346,930 473,989 Accounts receivable - distribution concession (e) 1,149,934 1,161,203 Accounts receivable - concessions - Bonus from the grant (f) 671,204 647,984 Accounts receivable - generation concessions (g) 81,202 69,182 Other temporary investments (h) 22,385 27,734 11,140,975 10,235,732 a) The Company manages the credit risk of its assets in accordance with the Management’s policy of investing virtually all of its funds in federal banking institutions. As a result of legal and/or regulatory requirements, in exceptional circumstances the Company may invest funds in prime private banks. b) The risk arises from the possibility that the Company might incur losses resulting from difficulties to receive its billings to customers. This risk is directly related to internal and external factors to Copel. To mitigate this type of risk, the Company manages its accounts receivable, detecting the classes of consumers most likely to default, implementing specific collection policies and suspending the supply and/or recording of energy and the provision of service, as established in contract and regulatory standards. c) Management believes this credit risk is low because repayments are secured by resources from dividends. d) Management considers the risk of this credit to be reduced, since the agreements signed guarantee the unconditional right to receive cash at the end of the concession to be paid by the Concession Grantor, corresponding to the costs not recovered through the tariff. e) Management considers the risk of this credit to be reduced, since the agreements signed guarantee the unconditional right to receive cash at the end of the concession to be paid by the Concession Grantor, referring to investments in infrastructure not recovered through the tariff. f) Management considers the risk of such credit to be low, as the contract for the sale of energy by quotas guarantees the receipt of an Annual Generation Revenue - RAG, which includes the annual amortization of this amount during the concession term. g) For the generation concession assets, ANEEL published Normative Resolution 596/2013, which deals with the definition of criteria for calculating the New replacement value (Valor novo de reposição – VNR), for the purposes of indemnification. Management's expectation of indemnification for these assets supports recoverability of the balances recorded. h) This risk arises from the possibility that the Company might incur losses resulting from the volatility on the stock market. This type of risk involves external factors and has been managed through periodic assessment of the variations occurred in the market. 35.2.2 Liquidity risk The Company's liquidity risk consists of the possibility of having insufficient funds, cash or other financial assets, to settle obligations on their scheduled maturity dates. The Company manages liquidity risk relying on a set of methodologies, procedures and instruments applied to secure ongoing control over financial processes to ensure proper management of risks. Investments are financed by incurring medium and long-term debt with financial institutions and capital markets. Short, medium and long-term business projections are made and submitted to Management bodies for evaluation. The budget for the next fiscal year is annually approved. Medium and long-term business projections cover monthly periods over the next five years. Short-term projections consider daily periods covering only the next 90 days. The Company permanently monitors the volume of funds to be settled by controlling cash flows to reduce funding costs, the risk involved in the renewal of loan agreements and compliance with the financial investment policy, while concurrently keeping minimum cash levels. The following table shows the expected undiscounted settlement amounts in each time range. Projections were based on financial indicators linked to the related financial instruments and forecast according to average market expectations as disclosed in the Central Bank of Brazil's Focus Report, which provides the average expectations of market analysts for these indicators for the current year and for the next 3 years. As from 2024, 2023 indicators are repeated on an unaltered basis throughout the forecast period. Less than 1 to 3 3 months 1 to 5 Over Interest (a) 1 month months to 1 year years 5 years Total 12.31.2020 Loans and financing Note 21 29,274 197,056 669,153 1,570,564 1,868,504 4,334,551 Debentures Note 22 335,121 47,686 1,723,107 4,953,679 1,020,581 8,080,174 Accounts payable related Rate of return + to concession IGP-M and IPCA 7,220 14,444 68,504 429,573 1,570,984 2,090,725 Accounts payable to suppliers - 2,034,872 309,329 26,248 66,003 - 2,436,452 PIS and Cofins to be refunded to consumers - - - 121,838 3,805,985 - 3,927,823 Special Tax Regularization Program - Pert Selic 4,220 8,456 38,426 225,206 270,982 547,290 Sectorial financial liabilities Selic 15,752 31,585 143,906 - - 191,243 2,426,459 608,556 2,791,182 11,051,010 4,731,051 21,608,258 (a) Effective interest rate - weighted average. As disclosed in Notes 21.5 and 22.3, the Company have loans and financing agreements and debentures with covenants that if breached may have their payment accelerated. 35.2.3 Market risk Market risk is the risk that the fair value or the future cash flows of a financial instrument shall oscillate due to changes in market prices, such as currency rates, interest rates and stock price. The purpose of managing this risk is to control exposures within acceptable limits, while optimizing return. a) Foreign currency risk (US Dollar) This risk comprises the possibility of losses due to fluctuations in foreign exchange rates, which may reduce assets or increase liabilities denominated in foreign currencies. The Company's foreign currency indebtedness is not significant, and it is not exposed to foreign exchange derivatives. The Company monitors all relevant foreign exchange rates. The effect of the exchange rate variation resulting from the power purchase agreement with Eletrobras (Itaipu) is transferred to customers in Copel DIS's next tariff adjustment. The exchange rate risk posed by the purchase of gas arises from the possibility of Compagás reporting losses on the fluctuations in foreign exchange rates, increasing the amount in Reais of the accounts payable related to the gas acquired from Petrobras. This risk is mitigated by the monitoring and transfer of the price fluctuation through tariff, when possible. The Company monitors these fluctuations on an ongoing basis. Sensitivity analysis of foreign currency risk The Company has developed a sensitivity analysis in order to measure the impact of the devaluation of the US dollar on its loans and financing subject to currency risk. The valuation of the financial instruments considers the possible effects on profit and loss and equity of the risks evaluated by the Company's Management on the reporting date for the financial instruments, as recommended by IFRS 7 - Financial Instruments: Disclosure. Based on the equity position and the notional value of the financial instruments held as of December 31, 2020, it is estimated that these effects will approximate the amounts stated in the above table in the column for the forecast probable scenario, since the assumptions used by the Company are similar to those previously described. The baseline scenario takes into account the existing balances on the date of these financial statements and the probable scenario assumes a variation in the foreign exchange rate - prevailing at the end of the period (R$/US$ 5.15) based on the median market expectation for 2021 according to the Focus Report issued by the Central Bank of Brazil. Additionally, the Company continues to monitor scenarios 1 and 2, which consider a deterioration of 25% and 50%, respectively, in the main risk factor of the financial instrument in relation to the level used in the probable scenario, as a result of extraordinary events that may affect the economic scenario. . Baseline Projected scenarios - Dec.2020 Foreign exchange risk Risk 12.31.2020 Probable Scenario 1 Scenario 2 . Financial assets Collaterals and escrow accounts - STN USD depreciation 133,521 (1,200) (34,280) (67,360) . 133,521 (1,200) (34,280) (67,360) Financial liabilities Loans and financing - STN USD appreciation (140,337) 1,261 (33,508) (68,277) Suppliers Eletrobras (Itaipu) USD appreciation (288,640) 2,594 (68,918) (140,429) Acquisition of gas USD appreciation (38,574) 347 (9,210) (18,767) (467,551) 4,202 (111,636) (227,473) b) Foreign exchange risk - euro This risk arises from the possibility of loss due to fluctuations in exchange rates affecting fair value of Non-Deliverable Forward (NDF) transactions. These derivatives were contracted considering that in the supply contracts for wind turbines of companies in the Jandaíra wind complex, controlled by Copel GeT, disbursement installments in Euro are foreseen. Sporadic gains and losses are recognized in the Company's statement of income. Based on the notional amount of 15,5 million euros outstanding as of December 30, 2020, the fair value was estimated by the difference between the amounts contracted under the respective terms and the forward currency quotations (B3 reference rates), discounted to present value at the fixed rate as of the same date. The active balance, recorded as of December 30, 2020, is shown in Note 12. The liability balance, as of December 31, 2019, is presented in Note 28. Sensitivity analysis of operations with derivative financial instruments The Company developed a sensitivity analysis in order to measure the impact from exposure to fluctuation in exchange rate to Euro (€). For the base scenario, the accounting balances recorded on the date of these financial statements were considered and for the probable scenario, the balances updated with the future currency quotations (B3 reference rates on February 26, 2021) were considered and adjusted to present value by the pre-tax rate at same date. Additionally, the Company continues to monitor scenarios 1 and 2, which consider the 25% and 50% rise or fall in future quotes applied on the probable scenario, as a result of extraordinary events that may affect the economic scenario. Exchange Baseline Projected scenarios rate variation 12.31.2020 Probable Scenario 1 Scenario 2 Gains (losses) on operations with derivative financial instruments Increase 23,308 29,230 56,504 83,186 Decrease 23,308 29,230 3,140 (23,541) c) Interest rate and monetary variation risk This risk comprises the possibility of losses due to fluctuations in interest rates or other indicators, which may reduce financial income or financial expenses or increase the financial expenses related to the assets and liabilities raised in the market. The Company has not entered into derivative contracts to cover this risk but has been continuously monitoring interest rates and market indexes in order to observe any need for contracting. Sensitivity analysis of interest rate and monetary variation risk The Company has developed a sensitivity analysis in order to measure the impact of variable interest rates and monetary variations on its financial assets and liabilities subject to these risks. The valuation of the financial instruments considers the possible effects on profit and loss and equity of the risks evaluated by the Company's Management on the reporting date for the financial instruments, as recommended by IFRS 7 - Financial Instruments: Disclosure. Based on the equity position and the notional value of the financial instruments held as of December 31, 2020, it is estimated that these effects will approximate the amounts stated in the above table in the column for the forecast probable scenario, since the assumptions used by the Company are similar to those previously described. The baseline scenario takes into account the existing balances in each account as of December 31, 2019 2020 on the date of these financial statements and the probable scenario assumes balances reflecting varying indicators CDI/Selic – 4.00%, IPCA – 3.98%, IGP-DI – 6.85%, IGP-M - 8,98% and TJLP – 4.98%, estimated as market average projections for 2021 according to the Focus Report issued by the Central Bank of Brazil, except TJLP that considers the Company's internal projection. Additionally, the Company continues to monitor scenarios 1 and 2, which consider a deterioration of 25% and 50%, respectively, in the main risk factor of the financial instrument in relation to the level used in the probable scenario, as a result of extraordinary events that may affect the economic scenario. . Baseline Projected scenarios - Dec.2020 Interest rate risk and monetary variation Risk 12.31.2020 Probable Scenario 1 Scenario 2 Financial assets Bonds and securities Low CDI/SELIC 300,530 12,023 9,014 6,011 Collaterals and escrow accounts Low CDI/SELIC 197 8 6 4 CRC Transferred to the Paraná State Government Low IGP-DI 1,392,624 95,395 71,546 47,697 Sectorial financial assets Low Selic 346,930 13,877 10,408 6,939 Accounts receivable - concessions Low IPCA 1,821,138 72,481 54,361 36,241 Accounts receivable - generation concessions Undefined (a) 81,202 - - - 3,942,621 193,784 145,335 96,892 Financial liabilities Loans and financing Banco do Brasil High CDI (640,177) (25,607) (32,009) (38,411) BNDES High TJLP (2,027,581) (100,974) (126,217) (151,460) BNDES High IPCA (273,379) (10,880) (13,601) (16,321) Banco do Brasil - BNDES Transfer High TJLP (83,936) (4,180) (5,225) (6,270) Caixa Econômica Federal High TJLP (165) (8) (10) (12) Other No risk (48,674) - - - Debentures High CDI/SELIC (5,174,803) (206,992) (258,740) (310,488) Debentures High IPCA (1,550,339) (61,703) (77,129) (92,555) Debentures High TJLP (112,677) (5,611) (7,014) (8,417) Sectorial financial liabilities High Selic (188,709) (7,548) (9,435) (11,323) Special Tax Regularization Program - Pert High Selic (459,303) (18,372) (22,965) (27,558) Accounts payable related to concession High IGP-M (678,436) (60,924) (76,154) (91,385) Accounts payable related to concession High IPCA (53,428) (2,126) (2,658) (3,190) . (11,291,607) (504,925) (631,157) (757,390) (a) Risk assessment still requires ruling by the Granting Authority. 35.2.4 Electricity shortage risk Approximately 64% of installed capacity in Brazil currently comes from hydroelectric generation, as informed by the Generation Information Bank of ANEEL, which makes Brazil and the geographic region in which we operate subject to unpredictable hydrological conditions, due to non-cyclical deviations of mean precipitation. Unsatisfactory hydrological conditions may cause, among other things, the implementation of comprehensive programs of electricity savings, such as rationalization or even a mandatory reduction of consumption, which is the case of rationing. Since 2014, the reservoirs of the Southeast/Midwest, North and Northeast Brazilian regions have been subject to adverse climate situations, leading agencies responsible for this industry to adopt water resources optimization measures to guarantee fully meeting electricity demand. In the first quarter of 2020, the reservoirs in the Northeast and North recovered their levels, which practically reduces the risk of rationing in these subsystems to zero. As the system is interconnected, the South and Southeast/Midwest subsystems, despite being at lower storage levels, results in having a low risk of energy shortage since they can make use of the energy stored in the other two subsystems. The Electric Sector Monitoring Committee (CMSE) has maintained the energy deficit risk indicators within the safety margin in short-term projections. The same position is adopted by ONS regarding the risk of deficit in the medium term, as stated in the 2020-2024 Energy Operation Plan - PEN 2020. Although dam storage levels are not ideal, from the standpoint of regulatory agencies, when combined with other variables, such as a slower consumption growth, they are sufficient to keep the risk of deficit within the safety margin established by the National Energy Policy Council (Conselho Nacional de Política Energética - CNPE, in Portuguese) (maximum risk of 5%) in all subsystems. 35.2.5 Risk of GSF impacts The Energy Reallocation Mechanism (Mecanismo de Realocação de Energia - MRE, in Portuguese) is a system of redistribution of electric power The contracts need to have an energy physical guarantee basis. This is done, especially, through the allocation of power generated received from the MRE or purchase. The GSF is the ratio of the entire hydroelectric generation of the MRE participants to the GF sum of all the MRE plants. Basically, the GSF is used to calculate how much each plant will receive from generation to back up its GF. Thus, knowing the GSF of a given month the company will be able to know if it will need to back up its contracts through purchases. Whenever GSF multiplied by GF is less than the sum of contracts, the company will need to buy the difference in the spot market. However, whenever GSF multiplied by GF is greater than the total contracts, the company will receive the difference to the PLD. The low inflows that have been recorded since 2014, as well as problems with delays in the expansion of the transmission system have resulted in low GSF values, resulting in heavy losses for the companies holding MRE participating hydroelectric projects. For plants with contracts in the Free Contracting Environment - ACL, the main way to manage the low GSF risk is not to compromise the entire GF with contracts, approach currently adopted by the Company. For the contracts in the ACR, Law 13,203/2015 allowed the generators to contract insurance for electricity demand (load), by means of payment of a risk premium. Copel adopted this approach to protect contracts related to energy generated by the Mauá, Santa Clara, Fundão, Baixo Iguaçu and Colíder Thermoelectric Plants and Cavernoso II Small HPP. For the distribution segment, the effects of the GSF are perceived in the costs associated with quotas of Itaipu, of Angra and the plants whose concessions were renewed in accordance with Law 12,783/2013, as well as in the costs of the contracts for power availability with thermoelectric plants. This is a financial risk, since there is guarantee of neutrality of expenses with energy purchases through a tariff transfer. 35.2.6 Risk of non-renewal of concessions - generation and transmission The extension of energy generation and transmission concessions, achieved by Law No. 9,074/1995, is regulated by Law No. 12,783/2013, which was amended by Law No. 14,052 of September 8, 2020, regarding the deadline for requesting an extension of concessions. According to the new law, the concession operator should request extension of concession at least 36 months before the final contract date or after granting of concessions to hydroelectric power generation and electric power transmission and distribution plants, and of up to 24 months for thermoelectric plants. The Concession Grantor may advance effects of extension by up to 60 months counted as of contract or grant date and may also define initial tariff or revenue, which includes the definition of the tariff or initial revenues for the generation and transmission ventures (RAG - Annual Generation Revenue and RAP - Permitted Annual Revenue, respectively). Concessions for hydroelectric power generation and electric power transmission may be extended, at the discretion of the granting authority, only once, for a period of up to 30 years. Thermoelectric power generation concessions have an extension term limited to 20 years. In 2019, Decree No. 10,135/2019 was published, which regulated the granting of concession contracts in the electricity sector associated with privatization through sale of control by holder of a public service concession for electricity generation, having as one of the conditioning factors the alteration of the exploration regime to Independent Power Producer (IPP). According to the Decree, the manifestation of sale of the concession must take place within up to 42 months from the date of the related formal agreement, and any sale must take place within up to 18 months from the concession end date. If sale of control of the venture does not occur within the specified period, the plant must be subject to auction by the granting authority and the same concessionaire can participate in the auction, if it meets the qualification conditions. Copel has 2 plants whose concession ends in the next 5 years. For HPP Governador Bento Munhoz da Rocha Netto (HPP GBM) (1,676 MW), whose concession will end in 2023, the Company has not expressed any interest in extending the concession, as internal studies have shown that the extension through early change of the exploration regime would be economically and financially disadvantageous in relation to exploration of the plant under the current regime until concession end. On March 3, 2020, Copel GeT transferred the concession of HPP GBM to subsidiary F.D.A. Geração de Energia Elétrica S.A. with the purpose of, if the studies carried out by Copel GeT point to the advantage of the operation, divesting the control of this concessionaire and, thus, allow a new concession grant for 30 years. With respect to HPP São Jorge, whose concession ends in 2024, Copel did not express interest in the renewal and intends, at the end of the concession, to request ANEEL to convert the granting of concession into granting of registration. Regarding the Figueira HPP concession, expired in March 2019, the Company awaits the conclusion of the related ANEEL and MME procedural steps to execute any amendment to the Concession Agreement. The plant is undergoing a modernization process and will have as direct benefits the improvement in energy efficiency and the reduction of pollutant emissions in the atmosphere, in comparison with the old plant. According to the new law, the Company may express its intention to extend the concession of the Apucaraninha HPP until October 2022, and the Guaricana and Chaminé HPPs until August, 2023. If the Company does not express an interest in the extension of the current regime at its final term, be granted to the Company in the condition of registration, and the other concessions, at their final term, must be returned to the Concession Grantor. Copel GeT does not have any transmission concession ending in the next ten years. 35.2.7 Risk on non-renewal of concessions – distributions of electricity The fifth amendment to Copel DIS's concession contract No. 46/1999 imposes economic and financial efficiency covenants and indicators that consider the duration and frequency of service interruptions (DECi and FECi). Failure to comply with the conditions will result in termination of the concession (clause eighteen, subclause one), with due regard for the provisions of the contract, particularly the right to full defense and adversary system. Indicators and penalties Year Indicator Criteria Penalties Until 2020 Economic - financial efficiency and quality 2 consecutive years or at the Concession termination end of the 5-year period (2020) Quality Indicators 2 consecutive years or Limitation of dividend and interest on equity distribution 3 times in 5 years Economic - financial efficiency in the base year Capital Increase (a) Limitation of dividend and interest on equity distribution Restrictive regime for contracts with related parties From the 6 th Economic - financial efficiency 2 consecutive years Concession termination Quality Indicators 3 consecutive years (a) Within 180 days from the end of each fiscal year, in the totality of the insufficiency that occurs to reach the Minimum Economic and Financial Sustainability Parameter. Targets defined for Copel Distribuição in the first five years after extension of the concession agreement Quality - limits (a) Quality (Performed) Year Economic and Financial Management Realized DECi (b) FECi (b) DECi FECi 2016 13.61 9.24 10.80 7.14 2017 EBITDA ≥ 0 (c) 661,391 12.54 8.74 10.41 6.79 2018 EBITDA (-) QRR ≥ 0 (d) 550,675 11.23 8.24 10,29 6,20 2019 {Net Debt / [EBITDA (-) QRR]} ≤ 1 / (0.8 * SELIC) (e) 822,386 10.12 7.74 9,10 6,00 2020 {Net Debt / [EBITDA (-) QRR]} ≤ 1 / (1.11 * SELIC) (e) 9.83 7.24 7.81 5.55 (a) According to Aneel’s Technical Note No. 0335/2015. (b) DECi - Equivalent Time of Interruption Caused by Internal Source per Consumer Unit; and FECi - Equivalent Frequency of Interruption Caused by Internal Source per Consumer Unit. (c) Regulatory EBTIDA adjusted for non-recurring events (Voluntary retirement program, post-employment benefit, provisions and reversals) according to sub-clause six, of the Fifth Amendment to the Concession Agreement. (d) QRR: Regulatory Reintegration Quota or Regulatory Depreciation Expense. This is the value defined in the most recent Periodical Tariff Review (RTP), plus General Market Price Index (IGPM) variation between the month preceding the RTP and the month preceding the twelve-month period of the economic and financial sustainability measurement. (e) Selic: limited to 12.87% p.y. 35.2.8 Risk of non-extension of the gas distribution concession In the event of termination of the concession at the end of the contractual term, Compagás will be entitled to compensation for investments made in the last 10 years prior to the end of the concession at their depreciated replacement value, according to the contractual clause. 35.2.9 Risk of overcontracting and undercontracting of electricity Under the current regulatory model, the agreement for purchase of electric power by distributors is regulated by Law 10,484/2014 and Decree 5,163/2004, which determine that the purchase of energy must be in the volume necessary to serve 100% of the distributor's market. The difference between the costs remunerated by the tariff and those actually incurred in the power purchases are fully passed on to captive consumers, as long as the distributor presents a contracting level between 100% and 105% of its market. However, if distributors determine contracting levels lower or higher than the regulatory limits, there is the assurance of neutrality if it is identified that such violation derives from extraordinary and unforeseen events that are not manageable by the buyer. In the last years, the distribution segment has been exposed to a general overcontracting scenario, as most companies determined contracting levels higher than 105%. Considering that several factors that have contributed to this situation are extraordinary and unavoidable by the distributors, such as the involuntary allocation of physical guarantee quotas and the broad migration of consumers to the free market and more recently, in 2020, the effects on the market of the governmental measures of social isolation implemented in the fight against the pandemic of the coronavirus Sars-CoV-2 (Covid-19), which caused a significant retraction in the market of distribution concessionaires, ANEEL and MME implemented a series of measures aiming at the mitigation of overcontracting. In relation to the contracting of, the scenarios of supply and demand indicate the occurrence of over contracting 105.8% by Copel DIS. Nevertheless, considering that this situation arises mainly from the migration of consumers to the free market and load reduction by the Covid-19 pandemic, it is considered that the Company maintains the guarantee of neutrality preserved, sin

36 Related Party Transactions

36 Related Party Transactions	12 Months Ended
	Dec. 31, 2020
Related party transactions [abstract]
Related Party Transactions	36 Related Party Transactions Assets Liabilities Revenue Cost / Expense Related parties / Nature of operation 12.31.2020 12.31.2019 12.31.2020 12.31.2019 12.31.2020 12.31.2019 12.31.2018 12.31.2020 12.31.2019 12.31.2018 Controlling shareholder State of Paraná - dividends payable - - 749,338 190,664 - - - - - - CRC Transfer (Note 8) 1,392,624 1,350,685 - - 341,964 184,229 188,797 - - - Luz Fraterna Program (a) 6,682 7,478 - - - - - - - - Tarifa Rural Noturna Program (a) 8,168 7,639 - - - - - - - - Morar Bem Paraná Program (a) 1,057 - - - - - - - - - Employees transferred (b) 87 33 - - - - - - - - Telecommunication services (c) 13,686 16,278 - - 43,248 43,011 41,375 - - - Meteorological System of Paraná - Simepar (c) (d) 2 10 855 705 48 58 54 (8,573) (7,087) (1,559) Entities with significant influence BNDES and BNDESPAR - dividends payable (e) - - 568,315 130,204 - - - - - - Financing (Note 21) - - 2,314,166 2,231,409 - - - (151,850) (175,461) (131,379) Debentures - Compagás (Note 22) - - 5,890 11,783 - - - (1,681) (1,194) (2,625) Debentures - wind farms (Note 22) (f) - - 239,249 253,877 - - - (25,891) (28,240) (30,316) State of Paraná investee Sanepar (c) (g) 223 294 582 311 4,956 4,710 4,200 (6,598) (5,852) (5,227) Use of water withdrawn from plants’ reservoirs - - - - 620 480 - - - - Joint ventures Voltalia São Miguel do Gostoso -mutual - - - - - - 294 - - - Dividends 1,032 1,032 - - - - - - - - Caiuá Transmissora de Energia(c) (h) (i) (j) 261 256 1,401 1,512 3,114 2,792 4,250 (16,267) (14,233) (14,869) Dividends 4,443 4,443 - - - - - - - - Integração Maranhense Transmissora (i) (j) - - 160 161 - - - (2,029) (1,938) (1,797) Dividends 3,806 4,306 - - - - - - - - Matrinchã Transmissora de Energia (i) (j) - - 959 829 - - - (11,259) (10,137) (9,514) Dividends 34,460 31,793 - - - - - - - - Guaraciaba Transmissora de Energia (i) (j) - - 436 383 - - - (5,348) (4,853) (4,475) Dividends 16,281 14,846 - - - - - - - - Paranaíba Transmissora de Energia (i) (j) - - 649 638 - - - (8,141) (6,514) (6,595) Dividends - 5,962 - - - - - - - - Cantareira Transmissora de Energia (i) (j) - - 468 467 - - - (5,912) (5,403) (1,618) Dividends 6,547 7,286 - - - - - - - - Mata de Santa Genebra Transmissão (i) (j) (k) 4,034 2,035 990 10 17,636 16,449 6,600 (7,636) (340) - Associates Dona Francisca Energética S.A. (l) 13 40 1,436 1,436 162 145 - (17,078) (16,905) (16,903) Dividends 97 - - - - - - - - - Foz do Chopim Energética Ltda. (c) (m) 216 209 - - 2,675 2,538 2,668 - - - Sercomtel S.A. Telecomunicações(n) - 4,436 - - 8,299 8,354 8,051 (4) (21) (4) Key management staff Fees and social security charges (Note 32.2) - - - - - - - (21,935) (25,860) (27,368) Pension and healthcare plans (Note 23.3) - - - - - - - (1,116) (1,560) (1,725) Other related parties Fundação Copel(c) 40 9 - - 315 285 299 - - - Administrative property rental - - 1,836 14,662 - - - (1,285) (2,520) (15,396) Pension and healthcare plans (Note 23.3) - - 1,493,614 1,194,936 - - - - - - Lactec (c) (o) 5 4 2,747 1,507 771 746 - (2,702) (2,787) (4,026) Tecpar (c) (p) 11 9 - - 862 81 68 - - - Celepar (c) (q) 4 15 2 21 51 112 85 (50) (5) - a) The Luz Fraterna In March 2018, the amount of R$ 159,274 was settled. The principal interest, fine and monetary restatement totaled R$ 158,849. For these charges on electricity bills for the period of September 2010 to June 2015, a lawsuit was filed against the State of Paraná on November 5, 2018, relating to the payment of invoices pursuant to State Law 14,087/2003. We highlight that despite the negotiations maintained by Management, seeking to settle this debt, uncertainties still exist regarding the realization of this asset and therefore, this asset was not recognized, therefore, in accordance with the current accounting standards. For the tax treatment, as determined by the Federal Revenue of Brazil in the Normative Instruction 1,753/2017, the Company has taxed this revenue. Management further emphasizes that it is making all necessary efforts and taking all necessary measures to preserve the Company's interests. The Tarifa Rural Noturna The Morar Bem Paraná Program was established by Decree 2,845/2011, and is an agreement between the State Government, the Companhia de Habitação do Paraná - Cohapar and Copel, which is managed by Cohapar. Copel's main assignment in this agreement is the construction of electricity distribution networks and service entrances for consumer units of housing estates. b) Reimbursement of wages and social charges for employees transferred to the Paraná State Government. Balances presented are net of expected credit loss. c) Revenue of Copel TEL from telecommunications services and lease of equipment and infrastructure. The balances presented are net of expected credit losses. d) The Sistema Meteorológico do Paraná - Simepar is a supplementary unit of the Independent Social Service Paraná Technology, linked to the State Department of Science, Technology and Higher Education. Simepar has contracts with Copel for services of weather forecast, meteorological reports, ampacity analysis, mapping and analyses of winds and atmospheric discharges. e) BNDES is the parent company of BNDES Participações S.A. - BNDESPAR, which owns Copel shares (Note 30.1). On December 22, 2018, the shareholder agreement between the State of Paraná and BNDESPAR, signed on December 22, 1998, was ended. f) BNDES and BNDESPAR acquired all the debentures issued by the subsidiaries Nova Asa Branca I, Nova Asa Branca II, Nova Asa Branca III, Nova Eurus IV and Ventos de Santo Uriel. g) Basic sanitation provided by Sanepar. h) Operation and maintenance services agreement provided by Copel GeT, maturing on May 9, 2021. Transmission System Connection Agreement - CCT executed by Copel DIS, expiring by the end of the concession agreement of the distribution or transmission company, whichever takes place first. i) Charges for use of the transmission system due by Copel GeT, UEG Araucária and wind farms. j) Copel DIS maintains a Contract for the Use of Transmission System (Cust) with ONS and power transmission concession operators whose subject matter is the contracting of Transmission System Use Amount (Must). Contracting is permanent and is regulated by ANEEL Normative Resolution 666/2015. Amounts are defined for four subsequent years, with annual reviews. k) Agreements entered by Copel GeT: for operation and maintenance services, maturing on February 1, 2023, rendering of owner's engineering services, advisory and consulting services, expired on November 2020, and facility sharing, maturing on January 1, 2043. l) Connection to the transmission system contracts entered by Copel GeT, Costa Oeste and Marumbi, maturing on August 17, 2031 until July 21, 2048. Power purchase and sale agreement made by Copel GeT, maturing on March 31, 2025 . m) Contracts entered into by Copel GeT: for operation and maintenance, maturing on May 23, 2025, and connection to the transmission system, maturing on January 1, 2043. n) The balances include the amount of income and expense for telecommunications services, resulting from contracts between Sercomtel S.A. Telecomunicações and Copel TEL, as well as revenue from a pole-sharing contract between Sercomtel S.A. Telecomunicações and Copel DIS. In December 2020, Sercomtel was sold, as detailed in Note 1.1.3, and, since then, it is no longer a related party to the Company. o) The Institute of Technology for Development (Lactec) is a Public Interest Civil Society Organization (OSCIP), in which Copel is an associate. Lactec has service and R&D contracts with Copel GeT, UEGA and Copel DIS, which are subject to prior or later control and approval by ANEEL. Copel COM provides services and sells energy to the institute. p) Energy sale agreement signed between Copel COM and the Paraná Institute of Technology (Tecpar), a public company of the State Government that supports innovation and economic and social development in Paraná and Brazil. q) Service agreements entered into with the Paraná Information Technology Company (Celepar), a mixed capital company that is part of the indirect administration of the State Government. The relevant transactions with related parties are shown above. Transactions arising from operations in a regulated environment are billed according to the criteria and definitions established by the regulatory agents and other transactions are recorded according to the market prices practiced by the Company. Copel's direct and indirect subsidiaries have short and long-term energy purchase and sale agreements entered into with each other, carried out in accordance with the criteria and definitions of the regulated environment. Both the balances of the transactions existing on December 31, 2020 and the balances of the commitments are eliminated between themselves when preparing the consolidated Financial Statements of the Company. Additionally, Copel COM has energy sale contracts signed with the State Legislature of the State of Paraná, Tecpar and Lactec, which total R$ 9,232 in sales commitments. 36.1 Guarantees awarded to related parties Sureties and guarantees granted by Copel to its subsidiaries for financing and debentures are informed in Notes 21 and 22. Copel provided financial guarantees, in the form of corporate guarantee letter, for power purchase and transport agreements made by Copel GeT and its subsidiaries, in the total amount of R$ 4,307 (R$ 4,005 at December 31, 2019) and made by Copel Mercado Livre, in the amount of R$ 112,069 (R$ 21,846 at December 31, 2019). Sureties and guarantees granted by Copel and Copel GeT for financing, debentures and insurance contracts of joint ventures are shown below: Date Final Amount Balance Interest Amount Company Operation issued maturity approved 12.31.2020 % guarantees (1) Caiuá Transmissora (a) Financing 12.23.2013 02.15.2029 84,600 50,256 49.0 5,956 (2) Guaraciaba Transmissora Financing 09.28.2016 01.15.2031 440,000 351,596 49.0 172,282 (3) Guaraciaba Transmissora Debentures 07.15.2018 12.15.2030 118,000 123,946 49.0 60,734 (4) Mata de Santa Genebra Financing 11.30.2017 07.15.2033 1,018,500 1,112,282 50.1 557,253 (5) Mata de Santa Genebra Debentures 04.15.2019 11.15.2030 210,000 208,014 50.1 104,215 (6) Cantareira Transmissora de Energia (a) Financing 12.28.2016 09.15.2032 426,834 431,366 49.0 28,175 (7) Cantareira Transmissora de Energia Debentures 01.09.2018 08.15.2032 100,000 99,732 49.0 48,869 977,484 (a) Guarantee awarded of fixed amount pursuant to the contractual provisions and formal requirements of the financial institution Financial institution (fund provider): BNDES: (1) (2) (4) (6) Allocation: Investment program Guarantees: provided by Copel GeT: (1); provided by Copel: (2) (3) (4) (5) (6) (7). Operation guarantee: pledge of shares held by Copel Get in the ventures. Performance bond Final Amount % endorsement Amount Company maturity Insured Copel GeT endorsement Matrinchã Transmissora 02.15.2029 90,000 49.0 44,100 Mata de Santa Genebra 02.28.2022 78,300 50.1 39,228 83,328

37 Commitments

37 Commitments	12 Months Ended
	Dec. 31, 2020
Commitments [Abstract]
Commitments	37 Commitments The main commitments related to long-term contracts not yet incurred, and therefore not recognized in the financial statements, are as follows: 12.31.2020 12.31.2019 Energy purchase and transportation contracts 132,879,053 137,279,155 Additions to property, plant and equipment Construction of transmission lines and substations 12,062 115,732 Construction of Jandaíra wind farm complex 330,257 - Construction of SHP Bela Vista 23,717 111,481 Telecommunications works 132,430 90,769 Acquisition of assets for electricity distribution 978,189 428,441 Gas purchase contracts 655,422 859,211

38 Insurance

38 Insurance	12 Months Ended
	Dec. 31, 2020
Provision for legal claims added to the cost of the works
Insurance	38 Insurance Details by peril type and effective date of the main insurance policies can be seen below: End Insured Policy of term amount Operational risks - HPP Baixo Iguaçu 05.30.2021 2,250,207 Operational risks - HPP Colíder 11.10.2021 2,166,984 Operational risks - Cutia and Bento Miguel 03.29.2022 2,016,287 Nominated Risks 08.24.2021 2,005,408 Operational risks - Brisa Potiguar 06.27.2021 914,610 Operational risks - UEG Araucária (a) 05.31.2021 882,035 Fire - owned and rented facilities 08.24.2021 800,636 Operational risks - HPP Governador Jayme Canet Junior 11.23.2021 799,290 Operational risks - Elejor 03.11.2022 763,007 Operational risks - São Bento 06.27.2021 571,848 (a)The values of the insured of operating risks - UEG Araucária have been translated from USD into BRL, with the current rate R$5.1967 as of December 31, 2020. In addition to the insurance policies listed above, the Company take out other insurance policies with lower values, such as: Directors and Officers liability (D&O), general civil liability, court award payment guarantee, sundry perils, national and international transportation, life, aircraft and vehicles. The guarantee insurance taken out by the subsidiaries, joint ventures and associates have Copel and/or Copel GeT as guarantor, within the limits of their share of interest in each project.

39 Additional information to th

39 Additional information to the Statement of Cash Flows	12 Months Ended
	Dec. 31, 2020
Additional Information To Statement Of Cash Flows [Abstract]
Additional information to the Statement of Cash Flows	39 Additional information to the Statement of Cash Flows 39.1 Transactions not involving cash Among the transactions carried out in the line item Contract assets, specified in Notes 11.1 and 11.2, the acquisitions totaled R$ 1,406,454 (1,039,234 on December 31, 2019 and R$ 813,450 on December 31, 2018). Of this amount, R$ 104,834 (R$ 48,068 on December 31, 2019 and R$ 50,927 on December 31, 2018) represent the amount of purchases made in installments and not settled through the end of the reporting period. According to information in Note 17.2, Property, plant and equipment acquisitions totaled R$ 273,823 (R$ 551,162 on December 31, 2019 and R$ 1,455,318 on December 31, 2018). Of this amount, R$ 21,773 (R$ 52,446 on December 31, 2019 and R$ 71,454 on December 31, 2018) represent the amount of purchases made in installments and not settled through the end of the reporting period. As described in note 27.1, the additions and remeasurement adjustment occurred in right-of-use assets totaled R$ 104,977 (R$ 13,237 on December 31, 2019), which were recognized matched against lease liabilities. In December 2018, there was acquisition in installments of the studies and projects denominated PCH Bela Vista and UHE Salto Grande, for the amount of R$ 19,461, with the company Foz do Chopim Energética Ltda., such liability being recorded in accounts payable to suppliers. In 2019, this acquisition was settled through a matching of accounts with the dividend’s receivable from that supplier, which is part of the Company's consolidated investments as associate. The mentioned transactions did not involve cash and, for this reason, are not being presented in the statement of cash flows.

40.Assets held for sale and dis

40.Assets held for sale and discontinued operations.	12 Months Ended
	Dec. 31, 2020
Assets Held For Sale And Discontinued Operations Abstract
Assets held for sale and discontinued operations	40 Assets held for sale and discontinued operations On July 15, 2020, through Relevant Event 07/2020, Copel communicated the approval of the divestment of 100% of the interest in Copel Telecomunicações by the Board of Directors. On this occasion, the beginning of the external phase was also approved, which included: (i) the opening of a Virtual Data-Room (“VDR”) with detailed information on the divestment; (ii) sending Paraná State Court of Auditors - TCE-PR the complete file for analysis; and (iii) the scheduling and holding of a virtual public hearing on the divestment, to be operated jointly with B3 SA - Brasil, Bolsa, Balcão. On September 16, 2020, Relevant Event 10/2020 announced that the Company's Board of Directors authorized the publication of the Copel Telecomunicações Divestment Auction Notice with the minimum divestment price of R$ 1,401,090 for Equity Value. On this date, Management understood that the criteria determined by IFRS 5 were met to classify the asset as held for sale and for the disclosure of a discontinued operation. On November 9, 2020, there was a public auction session related to the sale of 100% of the shares issued by Copel Telecomunicações owned by the Company. The Bordeaux Investment Fund in Multi-Strategic Participations was declared the winner of the event, after presenting the highest offer, in the amount of R$ 2,395,000, representing a goodwill of 70.94% in relation to the minimum bid amount. On January 14, 2021, the Share Purchase and Sale Agreement (CCVA) was signed with Bordeaux Participações S.A., a company belonging to Bordeaux Fundo de Investimento em Participações Multiestratégia, the winner of the auction. As disclosed in Material Fact 02/21, the conclusion of the disposal transaction is subject to compliance with the conditions defined in the Bid Notice and in the CCVA, which include, among others, the approvals of the Administrative Council for Economic Defense ( Conselho Administrativo de Defesa Econômica CADE) and the National Telecommunications Agency Agência Nacional de Telecomunicações Anatel), We highlight that during the studies for the sale of Copel Telecomunicações some assets were considered strategic for Copel Distribuição, Copel Geração e Transmissão, wholly owned subsidiaries of Copel, and some other administrative assets that will be maintained within Copel itself or other subsidiaries. In addition, in the divestment process, Management defined that all employees registered with Copel Telecom will be reallocated to other Copel subsidiaries. In view of these definitions, both the balances of assets that will be maintained in the Company and the total obligations with employees and managers, including post-employment benefit obligations and associated deferred taxes, were not reclassified to the asset accounts and associated liabilities were classified as held for sale. The balances of other assets and liabilities that were reclassified, which are presented in a specific line in the balance sheet are presented below. In compliance with the accounting standard, balances are measured at book values, since they are less than fair values fewer selling expenses. Assets classified as held for sale Cash and cash equivalents 277,119 Trade accounts receivable 60,543 Inventories 6,741 Current recoverable taxes and Deferred taxes 124,262 Escrow accounts 16,086 Property, plant and equipment 716,924 Intangible assets 10,587 Right-of-use asset 11,247 Other receivables 7,037 1,230,546 Liabilities associated with assets classified as held for sale Accounts payable to suppliers 16,916 Taxes due 35,426 Debentures 657,590 Lease liability 11,740 Provisions for legal claims 33,147 Other accounts payable 1,586 756,405 Reclassified assets and liabilities are part of the telecommunications segment which, with the divestment of Copel Telecomunicações, will be discontinued at Copel. In addition, the total of R$ 74,437 related to Copel Telecomunicações contingent liabilities (not recorded in the balance sheet) was disregarded in Note 29.2. Therefore, the revenues, costs and expenses as well as the cash flow movement resulting from these reclassified assets and liabilities were presented in separate lines, as a discontinued operation, both in the Income Statement and in the Cash Flow Statement. It should also be noted that as of October 1, 2020, the depreciation and amortization of assets that will be sold ceased, after their reclassification to current assets, in the line item Assets held for sale, in compliance with what determines item 25 of IFRS 5. The amounts from discontinued operations are presented in the following tables: Statements of Income from discontinued operations 12.31.2020 12.31.2019 12.31.2018 Net Operating Revenue 355,843 375,028 384,316 Operating Costs (100,684) (296,028) (128,780) Gross Profit 255,159 79,000 255,536 Selling expenses (31,244) (31,286) (43,295) General and administrative expenses (21,333) (23,010) (16,691) Other operational income (expenses) (50,518) (136,310) (52,686) (103,095) (190,606) (112,672) Profit (Loss) before financial results and taxes 152,064 (111,606) 142,864 Financial results (33,378) (33,122) (24,905) Operating Profit (Loss) 118,686 (144,728) 117,959 Income tax and social contribution (43,108) 36,335 (40,826) Net income (Loss) 75,578 (108,393) 77,133 Statements of Cash Flows from discontinued operations 12.31.2020 12.31.2019 12.31.2018 Net income 75,578 (108,393) 77,133 Adjustments to reconcile net income 282,914 419,093 209,218 Changes in assets and liabilities (16,958) (38,821) (11,478) Taxes and charges paid (73,050) (51,464) (83,488) Cash flows from operational activities 268,484 220,415 191,385 Additions to property, plant and equipment and intangible assets (73,573) (175,569) (280,542) Cash flows from investment activities (73,573) (175,569) (280,542) Issue of Debentures - 210,000 - Payment of loans and financing and lease (20,038) (9,260) (5,804) Cash flows from financing activities (20,038) 200,740 (5,804) Changes in cash and cash equivalents 174,873 245,586 (94,961)

41 Subsequent events

41 Subsequent events	12 Months Ended
	Dec. 31, 2020
Subsequent Events
Subsequent events	41 Subsequent events 41.1 Lease agreement with Fundação Copel de Previdência e Assistência Social On February 22, 2021, Fundação Copel de Previdência e Assistência Social and Copel signed a new lease agreement, by Copel, for the property located at Rua José Izidoro Biazetto, 158, for a period of 20 years. The objective of the agreement is to lease the property and make investment in improvements to adapt it to the new needs of the Company. The initial value of the agreement is R$ 9,540 per year and the total estimated value for the term of the agreement is R$ 224,513. The agreement will be of corporate nature and its costs apportioned between the following companies: Companhia Paranaense de Energia - Copel, Copel Geração e Transmissão S.A., Copel Distribuição S.A., Copel Telecomunicações S.A, Copel Comercialização S.A., and Copel Serviços S.A. The validity and effectiveness of the contract, for all legal effects, will be subject to prior approval of Aneel, under the terms of Normative Resolution 699/2016. 41.2 Cyber attack In January 2021, Copel became aware that it was exposed to a cyber incident in its information technology (“IT”) environment that interrupted some systems and partially affected the Company's administrative operations. Copel involved leading experts, including external experts, in cybersecurity and general IT controls, launched a comprehensive containment and remediation effort, informed the competent authorities and initiated a forensic investigation. In the first weeks of February 2021, Copel had reestablished all of its administrative systems and resumed operations in all of its businesses. The cyber incident did not have a significant impact on the revenue performance of the Company's business for the year ended December 31, 2020, despite having resulted in a slight delay in billings in the first days of February 2021 resulting from the preventive measures to identify the scope of the incident. The incremental expense incurred as a result of the cyber incident was not material, and no provision was identified to be recognized at December 31, 2020. On February 1, 2021, understanding better the event that occurred, Copel issued Notice to the Market 07/21 informing that part of its systems were temporarily unavailable, except for the operating systems, which provide energy supply and telecommunication services, which continued to operate without interruption. Copel performed extensive procedures to validate the accuracy and integrity of the information and no access to the computing environment that concentrates the Company's ERP and billing systems, as well as folders and/or files with the presence of sensitive personal data, was identified, so there is no indication that the accuracy and completeness of the financial information has been affected as a result of the incident. 41.3 Additional proposed dividend from non-capitalized revenue reserve On March 11, 2021, the General Meeting approved the revision of the Company's Articles of Incorporation, which includes, among other changes, the possibility for the Board of Directors to decide on the distribution of interim dividends, interim dividends or interest on capital based on retained earnings, in the revenue reserves and in the profit for the current year, recorded in the semi-annual or quarterly interim financial statements, provided that in conformity with the dividend policy and without prejudice to the subsequent ratification of the General Meeting. On March 17, 2021, the Board of Directors approved the management's proposal for the payment of interim dividends based on the profit retention reserve, as pointed out in Note 30.4.1. 41.4 Amendment to the Articles of Incorporation On March 11, 2021, the General Meeting approved the amendment to the Company's Articles of Incorporation, as per Notice to the Market 08/21. In addition to the change already mentioned in Note 41.3 above, the amendment also included other changes that represent advances in corporate governance and, among them, the approval of the Company's Units program, which includes the share split described in Note 30.1.

42 Condensed individual financi

42 Condensed individual financial information of Companhia Paranaense de Energia - Copel	12 Months Ended
	Dec. 31, 2020
Condensed Unconsolidated Financial Information Of Companhia Paranaense De Energia - Copel [Abstract]
Condensed individual financial information of Companhia Paranaense de Energia - Copel	42 Condensed individual financial information of Companhia Paranaense de Energia - Copel In order to attend Rule 12-04 of Regulation S-X of the Securities and Exchange Commission (the “SEC”), Management has incorporated the condensed individual financial information of Companhia Paranaense de Energia - Copel in these financial statements, as part of the Form 20-F. These information were prepared considering the same accounting policies as described in Note 3 and 4 to Company’s consolidated financial statements . (a) Condensed statements of financial position as of December 31, 2020 and 2019 ASSETS 12.31.2020 12.31.2019 Current assets Cash and cash equivalents 42,700 25,304 Bonds and securities 90 90 Dividends receivables 1,290,114 760,719 CRC transferred to the State Government of Paraná 287,789 219,236 Other current receivables 1,025 1,068 Income tax and social contribution 12,171 5,876 Prepaid expenses 150 95 Receivable from related parties 40,298 6,039 1,674,337 1,018,427 Assets classified as held for sale 758,742 - 2,433,079 1,018,427 Noncurrent assets Other temporary investments 22,385 27,734 CRC transferred to the State Government of Paraná 1,104,835 1,131,449 Judicial deposits 125,738 124,219 Other current receivables 7,443 7,444 Income Tax and Social Contribution 117,682 123,951 Deferred tax assets 282,132 154,364 Other noncurrent recoverable taxes 88,331 87,597 Receivables from related parties 140,337 108,983 1,888,883 1,765,741 Investments 18,807,102 17,286,220 Property, Plant and Equipment, net 2,725 1,143 Intangible Assets 2,041 1,321 Right-of-use asset 962 271 20,701,713 19,054,696 Total assets 23,134,792 20,073,123 LIABILITIES 12.31.2020 12.31.2019 Current liabilities Payroll, social charges and accruals 16,759 8,437 Related parties 283,650 696 Suppliers 3,184 3,956 Income tax and social contribution - 1,811 Other taxes payable 952 120 Loans and financing 512,086 39,628 Debentures 301,972 315,008 Dividends payable 944,274 588,563 Post employment benefits 226 378 Lease liability 279 158 Other accounts payable 567 116 2,063,949 958,871 Noncurrent liabilities Related parties 5,851 145 Other taxes due 2,978 2,817 Loans and financing 266,682 746,075 Debentures 499,317 797,713 Post employment benefits 9,929 8,658 Lease liability 707 125 Other accounts payable 1,936 1,434 Provisions for legal claims 324,332 304,871 1,111,732 1,861,838 Equity Share capital 10,800,000 10,800,000 Equity valuation adjustments 353,349 591,927 Legal reserves 1,209,458 1,014,248 Retained earnings 6,088,855 4,846,239 Additional dividend from non-capitalized earnings reserve 1,507,449 - 19,959,111 17,252,414 Total liabilities and equity 23,134,792 20,073,123 (b) Condensed statements of income for the years ended December 31, 2020, 2019 and 2018 Restated Restated 12.31.2020 12.31.2019 12.31.2018 Operating revenues (expenses) General and administrative expenses (79,762) (59,907) (67,292) Other revenues (expenses), net (24,423) 1,244 11,696 Result of equity in investees 3,551,254 2,177,629 1,258,213 3,447,069 2,118,966 1,202,617 Operating income before financial results 3,447,069 2,118,966 1,202,617 Financial income (expenses) Financial revenues 335,485 209,679 301,729 Financial expenses (86,076) (235,033) (238,355) 249,409 (25,354) 63,374 Operating income 3,696,478 2,093,612 1,265,991 Income tax and social contribution Income tax and social contribution - (21,195) (2,083) Deferred income tax and social contribution 127,503 5,850 44,993 127,503 (15,345) 42,910 Net income from continuing operations 3,823,981 2,078,267 1,308,901 Discontinued operations Net income (loss) from discontinued operations 80,221 (88,321) 98,162 Net income 3,904,202 1,989,946 1,407,063 Basic and diluted net earning per share attributed to controlling shareholders - continuing operations - expressed in Brazilian Reais Common shares 1.33430 0.72523 0.45683 Class A preferred shares 1.76982 0.89086 0.50251 Class B preferred shares 1.46773 0.79778 0.50251 Basic and diluted net earning per share attributed to controlling shareholders - expressed in Brazilian Reais Common shares 1.36229 0.69440 0.49109 Class A preferred shares 1.80062 0.85790 0.54020 Class B preferred shares 1.49852 0.76388 0.54020 As described in Note 30.1, on March 11, 2021, the General Meeting approved the share split of the Company, in the proportion of one share for ten shares, so that, for every one share issued by the Company, nine new shares of the same class and type will be credited. The values of basic and diluted net profit per share in the table above already consider the new number of shares, after the split. (c) Condensed statement of comprehensive income for the years ended December 31, 2020, 2019 e 2018 12.31.2020 12.31.2019 12.31.2018 NET INCOME 3,904,202 1,989,946 1,407,063 Other comprehensive income Items that will never be reclassified to profit or loss Gain (losses) on actuarial liabilities Post employment benefits (779) (3,371) (408) Post employment benefits - equity (178,434) (120,358) (38,245) Taxes on other comprehensive income 265 1,146 139 Items that are or maybe reclassified to profit or loss Subsidiary loss with interest variation - (4,874) - Total comprehensive income, net of taxes (178,948) (127,457) (38,514) TOTAL COMPREHENSIVE INCOME 3,725,254 1,862,489 1,368,549 (d) Condensed statements of cash flows for the years ended December 31, 2020, 2019 and 2018 12.31.2020 12.31.2019 12.31.2018 Net cash generated from operating activities 761,050 688,443 653,230 Cash flow from investing activities Financial investments 5,349 115,376 (124,254) Loans and financing granted to related parties (40,000) (24,410) (192,445) Receipt of loans and financing granted to related parties 7,015 24,512 560,877 Additions in investments (68,127) (271,968) (608,934) Capital reduction of investees. 228 - 45,000 Additions to property, plant and equipment (1,800) (285) (267) Additions to intangible (1,045) (271) (3) Net cash used in investing activities (98,380) (157,046) (320,026) Cash flow from financing activities Issue of Debentures - 500,000 600,000 Issue of loans with related parties 280,000 48,000 - Amortization of principal - loans and financing (38,500) (115,500) (77,000) Amortization of principal - debentures (300,000) (853,400) (333,300) Amortization of loans obtained from related parties - (48,000) - Amortization of principal - Lease liabilities (329) (141) - Dividends and interest on capital paid (586,445) (352,055) (264,734) Net cash used in financing activities (645,274) (821,096) (75,034) Total effects on cash and cash equivalents 17,396 (289,699) 258,170 Cash and cash equivalents at the beginning of the period 25,304 315,003 56,833 Cash and cash equivalents at the end of the period 42,700 25,304 315,003 Change in cash and cash equivalents 17,396 (289,699) 258,170 During the years ended December 31, 2020, 2019 and 2018, we received R$710,798 (of which R$661,639 by consolidated subsidiaries and R$49,159 of unconsolidated investees), R$777,651 (of which R$650.830 by consolidated subsidiaries and R$126,821 of unconsolidated investees), and R$609,219 (of which R$588,540 by consolidated subsidiaries and R$20,679 of unconsolidated investees), respectively, from dividends and interest on own capital paid by our investees. Additional individual information related to Companhia Paranaense de Energia - Copel are presented above : · Related Parties 12.31.2020 12.31.2019 Assets Copel Distribuição (a) 140,337 108,983 UEG Araucária - mutual 33,572 - Investees and Subsidiaries - Structure sharing 6,726 6,039 180,635 115,022 Liabilities Copel CTE - mutual 282,817 - Investees and Subsidiaries - Structure sharing 833 696 Elejor advance 5,851 145 289,501 841 (a) Copel DIS - Financing transferred - STN Copel transferred loans and financing to its wholly-owned subsidiaries at the time of its establishment in 2001. However, since the contracts for the transfers to the subsidiaries were not subject to formalization with the financial institutions, these commitments are also recorded in the Parent company. The balance with Copel DIS refers to the National Treasury Department - STN financing, transferred with the same levy of charges assumed by the Company (Note 21) and shown as obligations for loans and financing at Copel DIS. · Investments 12.31.2020 12.31.2019 Copel Geração e Transmissão 10,732,734 9,749,705 Copel Distribuição 7,212,915 6,012,246 Copel Telecomunicações 757,799 710,128 Copel TEL - Reclassification (a) (758,742) - Copel Energia 356,922 243,123 Compagas 252,481 284,747 UEG Araucária 48,355 64,094 Other investments 50,328 71,431 18,652,792 17,135,474 (a)Reclassification to Assets classified as held for sale. The information regarding joint ventures, associates and other investments are presented in note 16.1 – Changes in investments. · Dividends receivable 12.31.2020 12.31.2019 Investees and subsidiaries Copel Geração e Transmissão 769,108 464,450 Copel Distribuição 440,368 266,050 Copel Comercialização 29,803 88 Compagas 43,164 22,531 UEG Araucária 6,143 6,143 Joint Ventures and Associates Voltália 1,032 1,032 Dona Francisca 97 - Other investments 399 425 1,290,114 760,719 · Provisions for Legal Claims 12.31.2020 12.31.2019 Regulatory 21,373 17,357 Labor 2,466 1,957 Civil 163,940 150,529 Tax Claim 136,553 135,028 324,332 304,871 · Restriction of transfer of funds from subsidiaries - The subsidiaries described below qualify as either concessionaires of public services or independent power producers. As such, any transfer of funds to the respective parent company, in the form of loans or advances, requires approval by Aneel. This regulatory restriction does not apply to cash dividends determined in accordance with the Brazilian Corporate Law. As of December 31, 2020, total restricted subsidiaries net assets amount to R$ 18,197,350 composed as follows: 12.31.2020 12.31.2019 Copel Geração e Transmissão S.A. 10,732,735 9,749,705 Copel Distribuição S.A. 7,212,914 6,012,244 UEG Araucária Ltda. 238,211 315,740 Centrais Elétricas Rio Jordão - Elejor 13,490 42,859 18,197,350 16,120,548 The following table shows the expected undiscounted settlement values ​​of the Copel liabilities, in each time range: Interest (a) Less than 1 to 3 months 3 months to 1 year 1 to 5 years Over Total 12.31.2020 Loans and financing Note 21 - 131,547 400,876 279,030 - 811,453 Debentures Note 22 303,640 - 15,199 511,799 - 830,638 Suppliers - 3,183 1 - - - 3,184 306,823 131,548 416,075 790,829 - 1,645,275 (a) Effective interest rate - weighted average.

4 Significant Accounting Poli_2

4 Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2020
Significant Accounting Policies [Abstract]
Basis of consolidation	4.1 Basis of consolidation 4.1.1 Calculation of equity in earnings of investees Investments in joint ventures and associate are recognized in the consolidated financial statements based on the equity method. Under this method, investments are initially recorded at cost and their carrying amount is increased or decreased by the recognition of the investor's interest in profit, loss and other comprehensive income generated by investees after acquisition. This method must be discontinued from the date the investment ceases to qualify as a jointly controlled or associated company. Payment of dividends decreases the carrying value of investments . When required, for calculation of equity in earnings of investees, the investees' financial statements are adjusted to align their policies with the Company's accounting policies . 4.1.2 Subsidiaries The subsidiaries are entities to which the Company is exposed to or has a right over the variable returns arising from its involvement with them and has the ability to affect those returns exerting its power over the entities. The financial statements of the subsidiaries are included in the consolidated financial statements as from the date they start to be controlled by the Company until the date such control ceases. The balances of the subsidiaries’ assets and liabilities, and profit or loss, are consolidated and transactions between consolidated companies are eliminated. The balances of transactions between continuing operations and discontinued operations are also fully eliminated in the consolidated balance sheet. 4.1.3 Noncontrolling interests Noncontrolling interests are presented in equity, separately from the equity attributable to the Company's shareholders. Profits, losses and other comprehensive income are also allocated separately from the ones allocated to the Company's shareholders, even if this procedure results in negative noncontrolling interest balance. 4.1.4 Joint ventures and associates Joint ventures are entities over which the Company, subject to an agreement, has the ability to affect returns exerting its power in conjunction with other parties, irrespective of the percentage of interest in the voting capital. Associates are entities over which the Company exerts significant influence regarding financial and operational decisions, without control. When the share in losses of a joint venture or associate equals or exceeds the accounting balance of the investor’s equity interest in the investee, the investor should discontinue the recognition of its share in future losses. Additional losses will be considered, and a liability will be recognized, only if the investor incurs legal or constructive obligations, or performs payments on behalf of the investee. Should the investee subsequently post profits, the investor should resume the recognition of its interest in these profits only subsequent to the point at which the portion to which it is entitled to in these subsequent profits equals its share in unrecognized losses 4.1.5 Joint operations (consortiums) Joint operation is a joint business according to which parties that jointly control the business have rights on assets and obligations regarding liabilities related to the business. Joint operations are recorded in proportion to the share of interest held in their assets, liabilities and profit or loss. 4.1.6 Business combination The acquisition analysis is done on a case-by-case basis to determine whether the transaction represents a business combination or an asset purchase. Transactions between companies under common control do not constitute a business combination. Assets and liabilities acquired in a business combination are accounted for using the acquisition method and are recognized at their fair value at the acquisition date. The excess of the acquisition cost over the fair value of the net assets acquired (identifiable assets acquired, net of assumed liabilities) is recognized as goodwill in intangible assets. When the amount generated is negative, the bargain purchase gain is recognized directly in profit or loss. The amount paid that refers specifically to the concession right acquired in a business combination where the acquired entity is a concession operator, whose right to the concession has a known and defined term, is not characterized as goodwill. In acquisitions of interests in affiliates and in joint ventures, although they do not constitute a business combination, the net assets acquired are also recognized at fair value. Goodwill is presented in the investment.
Financial Instruments	4.2 Financial Instruments Financial instruments are recognized immediately on the trade date, that is, when the obligation or right arises. They are initially recorded at fair value, unless it is a trade receivable without a significant financing component, plus, for an item not measured at fair value through profit or loss, any directly attributable transaction costs. An accounts receivable from customers without a significant component of financing is initially measured at the price of the transaction. Fair values ​​are determined based on market prices for financial instruments with active market, and by the present value method of expected cash flows, for those that have no quotation available in the market. The Company does not have financial instruments measured at fair value through other comprehensive income. The Company operates with derivative financial instruments as described in Note 4.15. Financial assets are not reclassified subsequent to initial recognition, unless the Company changes the business model for the management of financial assets, in which case all affected financial assets are reclassified on the first day of the reporting period subsequent to the change in business model. The Company's financial instruments are classified and measured as described below. 4.2.1 Financial assets recorded at fair value through profit or loss Financial assets recorded at fair value through profit or loss include assets classified as held for trading, financial assets designated upon initial recognition as at fair value through profit or loss or financial assets required to be measured at fair value. Financial assets are classified as held for trading if they are acquired for the purpose of being sold or repurchased in the near term. Financial assets with cash flows that are not solely payments of principal and interest are classified and measured at fair value through profit or loss, irrespective of the business model. After initial recognition, transaction costs and attributable interest expenses, when incurred, are recognized through profit or loss. 4.2.2 Financial assets measured at amortized cost These are so classified and measured when: (i) the financial asset is maintained within a business model whose objective is to maintain financial assets in order to receive contractual cash flows; and (ii) the contractual terms of the financial asset give rise, on specified dates, to cash flows that exclusively comprise payments of principal and interest on the principal amount outstanding. 4.2.3 Financial liabilities measured at amortized cost Financial liabilities are measured at amortized cost using the effective interest method. This method is also used to allocate interest expense of these liabilities for the period. The effective interest rate is the rate that discounts estimated future cash flows (including fees paid or received that form an integral part of the effective interest rate, transaction costs and other premiums or discounts) over the expected life of the financial liability or, when appropriate, over a shorter period, for the initial recognition of the net carrying amount. 4.2.4 Financial liabilities measured at fair value through Profit or Loss These are liabilities designated upon initial recognition as at fair value through profit or loss and those classified as held for trading. Financial liabilities designated fair value through profit or loss are stated at fair value with the respective gains or losses in fair value recognized in the statement of income. Net gains or losses recognized in profit or loss include the interest paid on the financial liability. 4.2.5 Derecognition of financial assets and liabilities The Company derecognizes a financial asset when the contractual rights to the cash flows from the financial asset expire, or it transfers the rights to receive the contractual cash flows in a transaction in which substantially all of the risks and rewards of ownership of the financial asset are transferred or in which the Company neither transfers nor retains substantially all of the risks and rewards of ownership and it does not retain control of the financial asset. The Company derecognizes financial liabilities only when its obligations are discharged, cancelled or settled. The difference between the carrying amount of the derecognized financial liability and the corresponding disbursement made, or to be made, is recorded to profit or loss.
Net sectorial financial assets and liabilities	4.3 Net sectorial financial assets and liabilities According to the amendment to the concession agreement of distribution companies, the Company records changes in sectorial financial assets and liabilities, until the next tariff adjustment/review process, when the Concession Grantor approves the transfer as components of the power tariff and thus, it passes the adjustment on to consumers in the next tariff cycle, which occurs on June 24 of each year. The balances of the net sectorial financial assets and liabilities comprise: a) Parcel A Variation Compensation Account - CVA, which records the variation between estimated and actual energy purchase and transmission costs and sector charges, and b) financial items, which correspond to energy over-contracting, neutrality of charges and other rights and obligations included in the tariff. After approval of the Annual Tariff Adjustment and Periodic Tariff Review, the new tariff applied for the tariff year provides for the collection or return of the constituted assets and liabilities. In the event of termination of the concession for any reason, the residual values of Part A items and other financial components not recovered or returned through tariff are incorporated in the calculation of compensation or deducted from unamortized assets indemnity values, thus protecting rights or obligations of the distribution company to the Concession Grantor.
Accounts receivable related to the concession	4.4 Accounts receivable related to the concession Refer to financial assets of the concessions with unconditional right to receive cash by the Company, guaranteed by the Concession Grantor by contractual clause and specific legislation. 4.4.1 Power distribution service concession The concession agreement for electricity distribution provides that the users of the public service remunerate part of the investments made by the concessionaire and the Concession Grantor at the end of the concession indemnifies the other party. This model provides for the recognition of financial assets, contract assets in the construction period and intangible assets. The portion recognized as financial asset refers to the indemnity set forth in the public power distribution service concession agreements, which the Company understands as an unconditional right to cash payments from the Concession Grantor upon expiration of the concession. This indemnification aims to reimburse the Company for investments made in infrastructure, without recovery, through the tariff. The cash flows related to these assets are determined taking into account the Regulatory Compensation Basis (Base de Remuneração Regulatória or BRR), defined by the Concession Grantor, and the fair value is recorded based on the replacement cost methodology of the assets included in the distribution infrastructure linked to the concession. 4.4.2 Piped gas distribution service concession Gas concession agreement follows the bifurcated model, whereby part of the investments made by the concession operator is paid by users of the public service and the other part is indemnified by the Concession Grantor, the State of Paraná, at the end of the concession. This model provides for recognition of a financial asset, a contract asset in the construction period and an intangible asset. The amount recognized as a financial asset is the amount that will be indemnified by the Concession Grantor corresponding to the investments made in the last ten years prior to the end of the concession as foreseen in the agreement and that, according to Management, assures the unconditional right to receive cash at the end of the concession. The indemnity assumption is based on the replacement cost of the concession assets. 4.4.3 Bonus for the grant of quota system generation concession agreement The quota system generation concession agreement provides for the payment of a bonus for the grant to the Concession Grantor, pursuant to paragraph 7 of article 8 of Law 12,783/2013. This bonus is recognized as a financial asset because it represents an unconditional right to receive cash, guaranteed by the Concession Grantor during the term of the concession and without risk of demand. The remuneration of this financial asset is based on the Weighted Average Cost of Capital - WACC defined by the National Energy Policy Council (CNPE) in Resolution 2/2015, which is being presented in the statement of income as operating revenue in accordance with the Company's business model. 4.4.4 Concession of power generation The Company has operated and operates concession agreements for power generation that contain indemnification clauses for the infrastructure not depreciated, amortized and/or received during the concession term. After maturity, the residual balance of the assets is transferred to Accounts receivable related to the concession. At the end of each reporting period, Management evaluates the recoverability of the asset, remeasuring its cash flow based on its best estimate.
Contract assets	4.5 Contract assets Represented by the construction in progress or in service of the infrastructure delegated by the Concession Grantor, conditional upon the receipt of revenue not only by the passage of time, but after fulfilling the performance obligation to maintain and operate the infrastructure. 4.5.1 Power distribution service concession Represents the concessionaire's contractual right related to the works under construction to meet the needs of the concession, accounted for at cost plus financial charges, when applicable. When the assets are put into operation, the assets are transferred to the intangible asset, in the amount equivalent to what will be remunerated by the user through payment of the fee for the use of the services, or to the accounts receivable associated to the concession, in the amount equivalent to the residual portion of the assets not amortized, which will be reverted to the Concession Grantor through indemnification at the end of the concession. 4.5.2 Power gas distribution service concession Construction in progress for the distribution of piped gas which will be transferred to intangible assets upon their entry in operation and to the extent that the right (authorization) is received to charge the users of the public service. The amount that will not be amortized within the term of the concession is presented in financial assets, indemnified at the end of the concession by the Concession Grantor according to contractual definition. 4.5.3 Power transmission concession Represents the balance of public electricity transmission contracts signed with the Concession Grantor to build, operate and maintain the high voltage lines and substations of the generation centers up to the distribution points. During the term of the concession agreement, the Company receives, subject to its performance, a remuneration denominated Annual Revenue Allowance (RAP) that remunerates the investments made in the construction of the infrastructure and covers also, the costs of operation and maintenance incurred. After the beginning of the commercial operation and insofar as the operation and maintenance service - O&M is provided, the portion of RAP referring to O&M revenue is recognized in profit or loss at fair value, on a monthly basis, and billed together with the revenue part recognized in the construction phase, referring to the remuneration of the built-up assets. This amount billed after complying with the O&M performance is reclassified to the financial asset under Customers until its effective receipt. The Company estimates its revenue in the construction phase at fair value based on the budgeted cost of the work and used by management as a parameter for bidding on the concession auction. Fair value revenue comprises the budgeted cost for the entire construction period plus the construction margin, which represents sufficient profit to cover the costs of managing and monitoring the work. The remuneration rate of each concession is determined by the projection of the expected cost, of the profit margin on the cost in the construction phase and also of the projection of the RAP to be received in the operational stage, already net of the variable consideration estimate (PV) and the RAP part of the O&M performance. This fair value valuation technique using the income approach discounts cash flow for the entire concession period, determining at initial recognition the implied rate that zeroes the flow over time. This remuneration rate is fixed at the initial period and does not change during the performance of the contract and represents the market rate in effect at the time under the conditions of the negotiation between parties. The assets arising from the construction of the transmission infrastructure are formed by the recognition of construction revenue, according to the percentage of completion of the construction (Note 4.13), and by their financial remuneration (Note 4.12.2). The Company recognizes gains and losses due to efficiency or inefficiency in the construction of the infrastructure and due to periodic tariff review (RTP), when incurred, directly in the statement of income for the year. Upon expiration of the concession, any uncollected amounts related to the construction of infrastructure shall be received directly from the Concession Grantor, as an unconditional right to cash reimbursement pursuant to the concession agreement, as compensation for investments made and not recovered through tariffs (RAP). The assets that compose the Existing System Basic Network - RBSE include one economic tariff component, referring to the cost of capital of the assets not depreciated in July 2017, and one financial tariff component, resulting from the right for the Annual Permitted Revenue (RAP) of the Concession Agreement No. 060/2001, not received in the period from January 2013 to June 2017, plus monetary adjustment and remuneration interest.
Accounts payable related to the concession	4.6 Accounts payable related to the concession These refer to the amounts set forth in the concession agreement in connection with the right to explore hydraulic power generation potential (onerous concession), whose agreement is signed as Use of Public Property (Uso do Bem Público or UBP) agreements. The obligation is recognized on the date of signature of the concession agreement corresponding to the present value of future cash payments for the concession. The liability is then remeasured using the effective interest rate and reduced by contractual payments.
Inventories (including property, plant and equipment and contract assets)	4.7 Inventories (including property, plant and equipment and contract assets) Materials and supplies in inventory, classified under current assets, and those assigned for investments, classified under property, plant and equipment, and contract assets, have been recorded at their average acquisition cost. Recorded amounts do not exceed their net realizable value.
Property, Plant and Equipment	4.8 Property, Plant and Equipment The property, plant and equipment related to the public service concession agreement are depreciated according to the straight-line method based on annual rates set forth and reviewed periodically by ANEEL, which are used and accepted by the market as representative of the economic useful lives of the assets related to concession's infrastructure. Property, plant and equipment related to contracts for the use of public property under the independent electricity producer scheme are depreciated based on annual rates established by ANEEL limited to the concession period. All other property, plant and equipment are depreciated using the straight-line method based on estimates of their useful lives, which is reviewed annually and adjusted if necessary. Costs directly attributable to construction works as well as interest and financial charges on borrowings from third parties during construction are recorded under property, plant and equipment in progress, if it is probable that they will result in future economic benefits for the Company.
Intangible Assets	4.9 Intangible Assets These comprise software acquired from third parties and software developed in-house and are measured at acquisition cost and amortized over five years, besides Intangible assets from Concession Agreements below. 4.9.1 Onerous concession of electric power generation Corresponds to acquisition of exploration rights on hydropower potential whose onerous concession contract is signed as Use of Public Property - UBP. During construction work, this asset is recognized at the present value of future cash disbursements during the Concession Agreement term. When commercial operation starts, the amount starts to be amortized over the concession period. 4.9.2 Hydrological risk renegotiation (Generation Scaling Factor - GSF) Asset consisting of the renegotiation of the hydrological risk under the terms of Law No. 13,203/2015 and subsequent changes, arising from the amounts recovered from the cost with the adjustment of the Energy Reallocation Mechanism - MRE (GSF). The amount was transformed by ANEEL into an extension of the concession period, which is amortized on a straight-line basis until the end of the new concession period, according to note 14.1. 4.9.3 Power distribution service concession This comprises the right to control infrastructure, built or acquired as part of the electric energy public service concession, and the right to charge fees to the users of the public service. Intangible assets are recorded at their fair acquisition and construction value, less accumulated amortization and impairment losses, when applicable. The amortization of intangible assets reflects the pattern in which it is expected that future economic benefits will flow to the Company during the concession period. During the infrastructure construction phase costs are classified as contract assets (Note 4.5). 4.9.4 Piped gas distribution service concession Intangible assets for piped gas distribution services, which correspond to the right to charge users for the gas supply. This intangible asset was initially recognized at acquisition or construction cost, plus interest and other capitalized finance charges. This asset is amortized using the straight-line basis over its estimated useful life, considering the economic benefits generated by intangible assets. During the infrastructure construction phase, costs are classified as contract assets (Note 4.5). 4.9.5 Intangible assets acquired separately Intangible assets with a finite useful life, acquired separately, are recorded at cost, less accumulated amortization and accumulated impairment losses. Amortization is recognized using the straight-line method based on the estimated useful lives of the corresponding assets. The estimated useful lives and the 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. 4.9.6 Derecognition of intangible assets An intangible asset is derecognized when no future economic benefits are expected from use or disposal. Gains or losses arising from disposal of an intangible asset are recognized in profit or loss, measured as the difference between net disposal proceeds and the carrying amount of the asset.
Impairment of assets	4.10 Impairment of assets Assets are assessed to detect evidence of impairment. 4.10.1 Financial assets Provisions for losses on financial assets are based on assumptions about default risk, existing market conditions and future estimates at the end of each year. The Company applies the simplified approach of IFRS 9 to the measurement of expected credit losses for the entire existence of financial assets that do not have significant financing components, by considering a provision for expected loss over a useful life for all trade accounts receivable. To measure expected credit losses, trade accounts receivable is grouped based on shared credit risk characteristics, numbers of days late, in the amount considered enough to cover losses on the realization of these assets, based on specific criteria of the payment history, collection actions carried out for the credit recovery and relevance of the amount due in the receivables portfolio. 4.10.2 Non-financial assets Assets under formation arising from onerous concession and concession rights and/or authorization to generate electricity are classified as intangible assets. Impairment is tested along with the other assets of that cash-generating unit. Whenever there is a loss resulting from situations where an asset’s carrying value exceeds its recoverable value, defined as the higher of the asset’s value in use or its net selling price, this loss is recognized in profit or loss for the year. For impairment testing purposes, assets are grouped at the lowest levels for which there are separately identifiable cash flows (Cash Generating Units - CGU). The amount of the impairment of non-financial assets is reviewed at the reporting date. In case of reversal of impairment losses which had been recorded in prior years, this reversal is recognized in current year's profit or loss. The Impairment of contract assets in their construction phase are tested immediately, mainly considering the use of the effective interest rate fixed at the beginning of the project and carried to the end of the concession cash flow. After the beginning of the commercial operation, the portion of revenue recognized is tested for impairment in the accounts receivable from customers. For the receivable part conditioned to fulfill the performance obligation to maintain and operate the infrastructure, the Company has no history and no expectation of losses, since amount are subject to guarantee structures, via shared apportionment of eventual default losses among the other members of the national interconnected system managed by the “Operador Nacional do Sistema” (ONS) and by jurisdiction of the sector.
Provisions	4.11 Provisions Provisions are recognized when: i) the Company has a present obligation (legal, formalized or non-formalized) resulting from a past event, ii) it is probable (i.e., more likely than not) that an outflow of resources embodying economic benefits will be required to settle the obligation, and iii) a reliable estimate can be made of the amount to settle the obligation. The estimates of outcomes and financial impacts are determined by the Company, which requires use of judgment by Management, supplemented by the experience of similar past transactions and, in some cases, by independent expert reports. Environmental liabilities are recognized as the Company assumes formal obligations before regulatory agencies or becomes aware of potential risks related to environmental issues, which may lead to cash disbursements that are deemed probable and that may be estimated. During the project implementation phase, the accrued amounts are included in property, plant and equipment (generation), construction cost (transmission) or contract assets (distribution). At the start of operations, all costs included in the Operating License, whose programs will be executed during the concession and the respective disbursement has not yet occurred, are measured and adjusted to present value according to the estimated cash flow of disbursements and recorded as environmental provisions matched against the assets related to the project, being adjusted periodically. Once the project enters commercial operation, all costs or expenses incurred with environmental programs related to the project’s operation and maintenance licenses are analyzed according to their nature and included in profit or loss for the period.
Revenue recognition	4.12 Revenue recognition 4.12.1 Revenue from contracts with customers Revenue is measured based on the consideration that the Company expects to receive in a contract with the customer, net of any variable consideration. The Company recognizes revenues when it transfers control of the product or service to the customer and when it is probable to receive the consideration considering the client's ability and intention to pay the consideration when due. The Company's operating revenue comes mainly from the electricity supply and from the electric network availability. The revenue from electricity supply is recognized monthly based on the data for billing that are determined by the average MW of contracted electricity and declared with the CCEE. When the information is not available, the Company estimates the revenue considering the contracts’ rules, the price estimate and the volume provided. For wind power generation companies subject to minimum generation amounts, the Company understands that it is subject to variable consideration, and for this reason, includes a provision for non-performance based on the annual generation estimates, reducing revenue. Revenue from electric power supply and network availability is recognized monthly based on measured and effectively billed energy. In addition, the Company records unbilled revenue, calculated from the period between the last billing and the end of each month, by estimate based on the last measurement taken. In the concession contract for the public electricity distribution service, non-performance compensations are provided for quality indicators that, when incurred, reduce electricity availability revenue. 4.12.2 Interest income Interest income is recognized when it is probable that future economic benefits will flow to the Company and its amount can be reliably measured. Interest income is recognized on a straight-line basis and based on time and the effective interest rate on outstanding principal amounts. The effective interest rate is the one that discounts the estimated future cash receipts calculated during the estimated life of the financial asset in relation to initial net carrying amount of that asset. Regarding the contract assets of the power transmission concession, financial compensation revenue is recognized using the implicit remuneration rate established at the beginning of each project, which is presented in the statement of income as operating income in accordance with the Company's business model.
Construction revenues and costs	4.13 Construction revenues and costs Revenue related to construction services for infrastructure in the power transmission and distribution services, and gas distribution, are recognized over time based on the stage of completion of the work. Related costs are recognized in the statement of income as construction cost. Given that Copel DIS and Compagás outsource the construction of distribution infrastructure to unrelated parties through works carried out in the short term, the construction margin to the power and gas distribution activities result in no significant amounts, resulting in the non-recognition of such margin. The construction margin adopted for the transmission activity for the years 2020, 2019 and 2018 was 1.65%, and results from a calculation methodology which considers the respective business risk.
Power purchase and sale transactions in the Spot Market (Electric Energy Trading Chamber - CCEE)	4.14 Power purchase and sale transactions in the Spot Market (Electric Energy Trading Chamber - CCEE Power purchase and sale transactions in CCEE are recorded on the accrual basis of accounting, based on data released by CCEE, which are calculated by the product of the Differences settlement prices - PLD multiplied by the energy surplus declared with CCEE, or, when such information is not available in a timely manner, by an estimate prepared by Management.
Derivative Financial Instruments	4.15 Derivative Financial Instruments 4.15.1 Power purchase and sale transactions The Company negotiates energy purchase and sale agreements and part of its contracts are designated and classified as derivative financial instruments measured at fair value through profit or loss. Unrealized net gains or losses arising from the mark-to-market of these contracts (the difference between contractual and market prices) are recognized in the statement of income. 4.15.2 Non-Deliverable Forward (NDF) contracts The Company operates with Non-Deliverable Forward – NDF contracts, which aim exclusively at providing hedge against exchange rate risks associated with cash flows from capital contributions to subsidiaries, when they reflect foreign-currency denominated purchases of projected equipment. They are measured at their fair value, with changes recorded in the statement of income for the year. The fair value is calculated based on the information of each contracted operation and the respective market information on the closing dates of the financial statements.
Taxes	4.16 Taxes 4.16.1 Income Tax and Social Contribution The taxation on profit comprises income tax and social contribution calculated based on the taxable profits (adjusted profit) of each taxable entity at the applicable tax rates according to prevailing legislation, namely, at 15%, plus 10% surtax on the amount exceeding R$ 240 per year, for income tax and at 9% for social contribution. Income tax and social contribution losses can be offset against future taxable profits, considering the limit of 30% of the taxable profit for the period, and can be carried forward indefinitely. 4.16.2 Deferred income tax and social contribution The Company, based on its profitability history and the expectation of generating future taxable profits, based on its internal projections prepared for reasonable periods for its business, sets up a deferred tax asset on temporary differences between the tax bases and on tax losses and negative tax basis. The deferred income tax and social contribution are recognized on temporary differences between the carrying amounts of assets and liabilities in the financial statements and the corresponding tax bases used for tax calculation purposes, to the extent that it is probable that there will be sufficient taxable profits against which the temporary differences can be utilized and the tax losses can be offset. Deferred tax assets and liabilities may be offset if there is a legal right to offset the current tax assets and liabilities and they relate to the same taxing authority. 4.16.3 Other taxes recoverable and other tax obligations Sales and services revenues are subject to value-added tax (Imposto sobre Circulação de Mercadorias e Serviços or ICMS) and service tax (Imposto sobre Serviços or ISS), at the applicable rates, and to the PIS (Social Integration Program) and COFINS (Contribution for Social Security Funding). Credits resulting from non-cumulative PIS and COFINS charges are accounted for as reductions to operating costs in the statement of income. Credits arising from non-cumulative ICMS, PIS and COFINS related to the purchase of assets are presented as reductions to the acquisition cost of these assets. Prepayments or amounts that can be offset are presented in current and non-current assets, according to their expected realization.
Post-employment benefits	4.17 Post-employment benefits The Company and its subsidiaries sponsor pension plans to supplement retirement and pension plans and the Assistance Plan (medical and dental assistance) for their active employees and their legal dependents. The amounts of these actuarial commitments (contributions, costs, liabilities and/or assets) are calculated annually by an independent actuary, with the base date that coincides with the end of the year. The economic and financial assumptions for the purposes of the actuarial valuation are discussed with the independent actuary and approved by the Parent Company’s Management. The assets of the benefit plans are valued at market value (marked-to-market). The value of the net plan liability is recognized at the present value of the actuarial obligation, less the fair value of the plan assets. The adoption of the projected credit unit method adds each year of service as a triggering event for an additional benefit unit, adding up to the calculation of the final obligation. Other actuarial assumptions are used, which take into account biometric and economic tables in addition to historical data from the benefits plans, obtained from the manager of these plans, Fundação Copel de Previdência e Assistência Social. Actuarial gains or losses caused by changes in assumptions and/or actuarial adjustments are recognized in other comprehensive income.
Leases	4.18 Leases Leases are recognized at present value as a right-of-use asset and lease liability and, from the initial registration, the amortization of the asset and interest on the liability are accounted for separately in profit or loss. The Company adopts exemptions from recognition provided for short-term leases (lease term of up to 12 months) and leases of low value assets, so that these contracts are recognized as operating costs and / or operating expenses on a straight-line basis during the term of the contract. In addition, the Company has land lease agreements for the development of wind power generation projects that provide for minimum payment during the study/construction period and payment based on variable remuneration during the period of commercial operation. For contracts that are subject to minimum payment, the Company recognized right-of-use assets and lease liabilities. While for contracts that are in commercial operation, the amounts are recorded in the income statement, in operating costs and / or expenses, when the event or condition is satisfied. To define the interest rate, the cost of the last fundraising carried out via debentures is considered, disregarding incentivized or subsidized funding, considering that this is the way the Company is used to finance cash flow.
Standards applicable to the Company effective January 1, 2020	4.19 Standards applicable to the Company effective January 1, 2020 From January 1, 2020, changes in the following pronouncements are in effect, without significant impacts on the Company's financial statements: (i) IAS 1 Conceptual framework; (ii) Amendment to definition of business in IFRS 3 and amendment to definition of materiality in IAS 1 and IAS 8.
New standards that are not yet in effect	4.20 New standards that are not yet in effect As of the 2021 financial year (i) IAS 37: specification on costs to comply with onerous contract; (ii) IFRS 3: update of the standard, in view of the changes to the Conceptual Framework; (iii) IAS 16: definitions of resources before intended use; (iv) Annual improvements to the 2018–2020 IFRS cycle with changes in pronouncements: IFRS 1 - Initial Adoption of International Accounting Standards; IFRS 9 - Financial Instruments; IFRS 16 - Leases; IAS 41 - Agriculture; (v) Changes in IAS 1: classification of liabilities as current or non-current. (vi) IFRS 17: new pronouncement for insurance contracts, replacing IFRS 4. The Company does not expect significant impacts on the Company's financial statements resulting from these changes in standards.

1 Operations (Tables)

1 Operations (Tables)	12 Months Ended
	Dec. 31, 2020
Operations [Abstract]
Schedule of subsidiaries	1.1.1 Subsidiaries Headquarters Main activity Interest Subsidiaries % Investor Copel Geração e Transmissão S.A. (Copel GeT) Curitiba/PR Production and transmission of electricity 100.0 Copel Copel Distribuição S.A. (Copel DIS) Curitiba/PR Distribution and marketing of electricity 100.0 Copel Copel Telecomunicações S.A. (Copel TEL) (Note 40) Curitiba/PR Telecommunication and communication 100.0 Copel Copel Serviços S.A. (Copel SER) (a) Curitiba/PR Production of electricity 100.0 Copel Copel Comercialização S.A. (Copel COM) Curitiba/PR Commercialization of electricity 100.0 Copel Companhia Paranaense de Gás - Compagás Curitiba/PR Distribution of pipeline gas 51.0 Copel Elejor - Centrais Elétricas do Rio Jordão S.A. Curitiba/PR Production of electricity 70.0 Copel UEG Araucária Ltda. (UEGA) Curitiba/PR Production of electricity from natural gas 20.3 Copel 60.9 Copel GeT São Bento Energia, Investimentos e Participações S.A. (São Bento) Curitiba/PR Control and management of interests 100.0 Copel GeT Nova Asa Branca I Energias Renováveis S.A. S. Miguel do Gostoso/RN Production of electricity from wind sources 100.0 Copel GeT Nova Asa Branca II Energias Renováveis S.A. Parazinho/RN Production of electricity from wind sources 100.0 Copel GeT Nova Asa Branca III Energias Renováveis S.A. Parazinho/RN Production of electricity from wind sources 100.0 Copel GeT Nova Eurus IV Energias Renováveis S.A. Touros/RN Production of electricity from wind sources 100.0 Copel GeT Santa Maria Energias Renováveis S.A. Maracanaú/CE Production of electricity from wind sources 100.0 Copel GeT Santa Helena Energias Renováveis S.A. Maracanaú/CE Production of electricity from wind sources 100.0 Copel GeT Ventos de Santo Uriel S.A. João Câmara/RN Production of electricity from wind sources 100.0 Copel GeT Cutia Empreendimentos Eólicos S.A. (Cutia) Curitiba/PR Control and management of interests 100.0 Copel GeT Costa Oeste Transmissora de Energia S.A. Curitiba/PR Transmission of electricity 100.0 Copel GeT Marumbi Transmissora de Energia S.A. Curitiba/PR Transmission of electricity 100.0 Copel GeT Uirapuru Transmissora de Energia S.A Curitiba/PR Transmission of electricity 100.0 Copel GeT Bela Vista Geração de Energia S.A. (b) Curitiba/PR Production of electricity 100.0 Copel GeT F.D.A. Geração de Energia Elétrica S.A. (FDA) Curitiba/PR Production of electricity 100.0 Copel GeT Jandaíra I Energias Renováveis S.A. (b) (c) Curitiba/PR Production of electricity from wind sources 100.0 Copel GeT Jandaíra II Energias Renováveis S.A. (b) (c) Curitiba/PR Production of electricity from wind sources 100.0 Copel GeT Jandaíra III Energias Renováveis S.A. (b) (c) Curitiba/PR Production of electricity from wind sources 100.0 Copel GeT Jandaíra IV Energias Renováveis S.A. (b) (c) Curitiba/PR Production of electricity from wind sources 100.0 Copel GeT GE Olho D’Água S.A. São Bento do Norte/RN Production of electricity from wind sources 100.0 São Bento GE Boa Vista S.A. São Bento do Norte/RN Production of electricity from wind sources 100.0 São Bento GE Farol S.A. São Bento do Norte/RN Production of electricity from wind sources 100.0 São Bento GE São Bento do Norte S.A. São Bento do Norte/RN Production of electricity from wind sources 100.0 São Bento Central Geradora Eólica São Bento do Norte I S.A. São Bento do Norte/RN Production of electricity from wind sources 100.0 Cutia Central Geradora Eólica São Bento do Norte II S.A. São Bento do Norte/RN Production of electricity from wind sources 100.0 Cutia Central Geradora Eólica São Bento do Norte III S.A. São Bento do Norte/RN Production of electricity from wind sources 100.0 Cutia Central Geradora Eólica São Miguel I S.A. São Bento do Norte/RN Production of electricity from wind sources 100.0 Cutia Central Geradora Eólica São Miguel II S.A. São Bento do Norte/RN Production of electricity from wind sources 100.0 Cutia Central Geradora Eólica São Miguel III S.A. São Bento do Norte/RN Production of electricity from wind sources 100.0 Cutia Usina de Energia Eólica Guajiru S.A. São Bento do Norte/RN Production of electricity from wind sources 100.0 Cutia Usina de Energia Eólica Jangada S.A. São Bento do Norte/RN Production of electricity from wind sources 100.0 Cutia Usina de Energia Eólica Potiguar S.A. São Bento do Norte/RN Production of electricity from wind sources 100.0 Cutia Usina de Energia Eólica Cutia S.A. São Bento do Norte/RN Production of electricity from wind sources 100.0 Cutia Usina de Energia Eólica Maria Helena S.A. São Bento do Norte/RN Production of electricity from wind sources 100.0 Cutia Usina de Energia Eólica Esperança do Nordeste S.A. São Bento do Norte/RN Production of electricity from wind sources 100.0 Cutia Usina de Energia Eólica Paraíso dos Ventos do Nordeste S.A. São Bento do Norte/RN Production of electricity from wind sources 100.0 Cutia (a) IIn October 2020 there was a change in the bylaws of Copel Renováveis ​​S.A. which included the change of the corporate name to Copel Serviços S.A. and also a change in the main activity of the Company. (b) Pre-operating stage. (c) SPEs established with a 99.99% interest in Copel GeT and 0.1% in Cutia. The transfer of all shares to Copel GeT is in progress.
Schedule of joint venture	1.1.2 Joint Ventures Joint ventures Headquarters Main activity Interest % Investor Voltalia São Miguel do Gostoso I Participações S.A. São Paulo/SP Interests in companies 49.0 Copel Solar Paraná GD Participções S.A. Curitiba/PR Interests in companies 49.0 Copel Paraná Gás Exploração e Produção S.A. (a) Curitiba/PR Extraction of oil and natural gas 30.0 Copel Caiuá Transmissora de Energia S.A. Rio de Janeiro/RJ Transmission of electricity 49.0 Copel GeT Integração Maranhense Transmissora de Energia S.A. Rio de Janeiro/RJ Transmission of electricity 49.0 Copel GeT Matrinchã Transmissora de Energia (TP NORTE) S.A. Rio de Janeiro/RJ Transmission of electricity 49.0 Copel GeT Guaraciaba Transmissora de Energia (TP SUL) S.A. Rio de Janeiro/RJ Transmission of electricity 49.0 Copel GeT Paranaíba Transmissora de Energia S.A. Rio de Janeiro/RJ Transmission of electricity 24.5 Copel GeT Mata de Santa Genebra Transmissão S.A. (b) Jundiaí/SP Transmission of electricity 50.1 Copel GeT Cantareira Transmissora de Energia S.A. Rio de Janeiro/RJ Transmission of electricity 49.0 Copel GeT (a) Project with halted activities due to a Public Civil Action pending judgment by Federal Court. An arbitration proceeding will be started to decide about relief ofcontractual obligations with no burden for bidders, with consequent return of signing up bonus, refund of incurred costs with collateral and relief of collateral provided. (b) On November 11, 2020, the last asset of the project entered into commercial operation, so that the transmission line is 100% operational.
Schedule of fair values of the net assets	In the acquisition process, the fair values of the net assets acquired were identified and Copel recorded a bargain purchase in profit or loss for the year, as shown in the table below: Fair value on net assets acquired 1,106 Percentage of interest transferred 49% Fair value on net assets acquired by Copel 542 Transferred consideration amount 294 Bargain purchase (negative goodwill) 248
Schedule of associates	1.1.3 Associates Associated companies Headquarters Main activity Interest % Investor Dona Francisca Energética S.A. Agudo/RS Production of electricity 23.0303 Copel Foz do Chopim Energética Ltda. Curitiba/PR Production of electricity 35.77 Copel GeT Carbocampel S.A. Figueira/PR Coal exploration 49.0 Copel
Schedule of joint operations (consortiums)	1.1.4 Joint Operations (consortiums) Joint operations - Consortiums Consortium members Interest (%) Consórcio Energético Cruzeiro do Sul (Note 17.4) Copel GeT 51.0 Eletrosul Centrais Elétricas S.A. 49.0 Consórcio Empreendedor Baixo Iguaçu (Note 17.4) Copel GeT 30.0 Geração Céu Azul S.A (subsidiary of Neoenergia S.A.) 70.0 Consórcio Copel Energia a Gás Natural (a) Copel 49.0 Shell Brasil Petróleo Ltda. 51.0 Consórcio Paraná IP (b) Copel 49.0 Consórcio BRC 51.0 a) Copel Energia a Gás Natural Consortium With the intention of structuring a strategic natural gas plan for the State of Paraná, aiming to develop viable solutions in the area of ​​natural gas to serve the thermoelectric and non-thermoelectric markets of Paraná, in July 2020 the Copel Energia Natural Gas Consortium was founded, which aims to develop technical, economic-financial and socio-environmental feasibility studies for the project, in addition to preparing basic projects and obtaining a prior environmental license for the projects. b) Consórcio Paraná IP In September 2020, the Paraná IP Consortium was created, with the objective of participating in studies and tenders aimed at obtaining municipal concessions and establishing Public-Private Partnerships with municipalities or consortia of municipalities interested in the modernization of their public lighting systems and in the development of smart cities solutions. However, the Company deepened the prospecting of business opportunities and the analysis of attractiveness to operate in the segment, considering the recent concessions made by municipalities to establish Public-Private Partnerships and the discount levels presented by potential competitors and decided to not prioritize its performance in this service currently.

2 Concessions and Authorizati_2

2 Concessions and Authorizations (Tables)	12 Months Ended
	Dec. 31, 2020
Concessions And Authorizations [Abstract]
Schedule of concessions contracts or authorizations obtained	2.1 Concession contracts or authorizations obtained by Copel Copel Interest % Maturity Concession agreement / authorization of the equity Copel DIS Contract 046/1999, extended by 5th addendum to the contract 100 07.07.2045 Copel TEL (Note 40) Authorization term 54/2003 - Anatel/SVP/PVST 100 Indeterminate Authorization term 305/2012 - Anatel/SVP/PVST 100 Indeterminate Elejor Contract 125/2001 - HPP Fundão and Santa Clara 70 05.28.2037 Authorization - SHP Fundão I and SHP Santa Clara I - 753/2002 and 757/2002 70 12.19.2032 Dona Francisca Energética Contract 188/1998 - HPP Dona Francisca 23 08.28.2033 UEG Araucária Authorization 351/1999 - TPP Araucária (60.9% Copel GET) 20.3 12.23.2029 Compagás (2.1.1) Concession gas distribution contract 51 01.20.2019 Paraná Gás (1.1.2 - a) PART-T-300_R12 4861-.0000.99/2014-00 - ANP 30 05.15.2045 Usina de Energia Eólica São João S.A. (a) MME Ordinance 173 /2012 - WPP São João 49 03.26.2047 Usina de Energia Eólica Carnaúba S.A. (a) MME Ordinance 204 /2012 - WPP Carnaúbas 49 04.09.2047 Usina de Energia Eólica Reduto S.A. (a) MME Ordinance 230 /2012 - WPP Reduto 49 04.16.2047 Usina de Energia Eólica Santo Cristo S.A. (a) MME Ordinance 233/2012 - WPP Santo Cristo 49 04.18.2047 (a) Subsidiaries of Voltalia São Miguel do Gostoso I Participações S.A.
Schedule of impact to financials from accelerating expiry	The impacts recorded are as follows: 12.31.2020 Compagás balances Adjustments Copel balances STATEMENTS OF FINANCIAL POSITION Noncurrent assets Accounts receivable related to the concession 189,416 - 189,416 Intangible assets 102,627 29,739 132,366 STATEMENTS OF INCOME Net operating revenue Fair value of assets from the indemnity for the concession 34,591 (22,437) 12,154 Operating Costs Amortization (29,442) 199 (29,243) 12.31.2019 Compagás balances Adjustments Copel balances STATEMENTS OF FINANCIAL POSITION Noncurrent assets Accounts receivable related to the concession 144,813 179,572 324,385 Intangible assets 127,598 (127,598) - STATEMENTS OF INCOME Net operating revenue Fair value of assets from the indemnity for the concession 9,181 1,234 10,415 Operating Costs Amortization (28,854) 400 (28,454) 12.31.2018 Compagás balances Adjustments Copel balances STATEMENTS OF FINANCIAL POSITION Noncurrent assets Accounts receivable related to the concession 148,720 199,257 347,977 Intangible assets 152,538 (148,919) 3,619 STATEMENTS OF INCOME Net operating revenue Fair value of assets from the indemnity for the concession 9,184 3,009 12,193 Operating Costs Amortization (29,012) 6,253 (22,759)
Schedule of concession contracts or authorizations obtained by copel get and its investees	2.2 Concession contracts or authorizations obtained by Copel Get and its investees Copel GeT Interest % Maturity ONEROUS CONCESSION BY THE USE OF PUBLIC PROPERTY - UBP Generation Concession 001/2007 - HPP Gov. Jayme Canet Júnior (Mauá) 51 07.02.2042 Generation concession 001/2011 - HPP Colíder 100 01.17.2046 Ordinance 133/2011 - SHP Cavernoso II 100 02.28.2046 Generation Concession 002/2012 - HPP Baixo Iguaçu 30 10.30.2049 Generation Concession 007/2013 HPP Apucaraninha 100 10.12.2025 HPP Chaminé 100 08.16.2026 HPP Derivação do Rio Jordão 100 11.15.2029 HPP Cavernoso 100 01.07.2031 PUBLIC SERVICE CONCESSIONS Generation concession 045/1999 TPP Figueira (Note 35.2.6) 100 03.27.2019 HPP São Jorge (Note 35.2.6) 100 12.05.2024 HPP Gov. Ney Aminthas de Barros Braga (Segredo) 100 11.16.2029 HPP Gov. José Richa (Salto Caxias) 100 05.05.2030 Generation concession 001/2020 UHE Guaricana 100 08.16.2026 Authorization 278/1999 - WPP Palmas 100 09.29.2029 Dispatch 182/2002 Hydroeletric Generating Plant - HGP Melissa, HGP Pitangui and HGP Salto do Vau (only register with ANEEL) 100 - Generation concession 003/2016 HPP Gov. Pedro Viriato Parigot de Souza (GPS) 100 01.05.2046 HPP Marumbi Power generating plant registration: CGH. PH. PR. 001501-6.02 100 - Authorization Aneel 5,373/2015 - HGP Chopim I (only register with ANEEL) 100 - Concession agreement / authorization of the equity UEG Araucária Authorization 351/1999 - TPP Araucária (20,3% - Copel) 60.9 12.23.2029 Nova Asa Branca I MME Ordinance 267/2011 - WPP Asa Branca I 100 04.25.2046 Nova Asa Branca II MME Ordinance 333/2011 - WPP Asa Branca II 100 05.31.2046 Nova Asa Branca III MME Ordinance 334/2011 - WPP Asa Branca III 100 05.31.2046 Nova Eurus IV MME Ordinance 273/2011 -WPP Eurus IV 100 04.27.2046 Santa Maria MME Ordinance 274/2012 - WPP SM 100 05.08.2047 Santa Helena MME Ordinance 207/2012 - WPP Santa Helena 100 04.09.2047 Ventos de Santo Uriel MME Ordinance 201/2012 - WPP Santo Uriel 100 04.09.2047 GE Boa Vista MME Ordinance 276 /2011 - WPP Dreen Boa Vista 100 04.28.2046 GE Farol MME Ordinance 263 /2011 - WPP Farol 100 04.20.2046 GE Olho D’Água MME Ordinance 343 /2011 - WPP Dreen Olho D'Água 100 06.01.2046 GE São Bento do Norte MME Ordinance 310 /2011 - WPP Dreen São Bento do Norte 100 05.19.2046 Esperança do Nordeste MME Ordinance 183/2015 - WPP Esperança do Nordeste 100 05.11.2050 Paraíso dos Ventos do Nordeste MME Ordinance 182/2015 - WPP Paraíso dos Ventos do Nordeste 100 05.11.2050 Usina de Energia Eólica Jangada Resolution 3,257/2011 - WPP GE Jangada 100 01.05.2042 Maria Helena Resolution 3,259/2011 - WPP GE Maria Helena 100 01.05.2042 Usina de Energia Eólica Potiguar MME Ordinance 179/2015 - WPP Potiguar 100 05.11.2050 Usina de Energia Eólica Guajiru Resolution 3,256/2011 - WPP Dreen Guajiru 100 01.05.2042 Usina de Energia Eólica Cutia Resolution 3,258/2011 - WPP Dreen Cutia 100 01.05.2042 São Bento do Norte I Ordinance 349/2015 - WPP São Bento do Norte I 100 08.04.2050 São Bento do Norte II Ordinance 348/2015 - WPP São Bento do Norte II 100 08.04.2050 São Bento do Norte III Ordinance 347/2015 - WPP São Bento do Norte III 100 08.04.2050 São Miguel I Ordinance 352/2015 - WPP São Miguel I 100 08.04.2050 São MigueI lI Ordinance 351/2015 - WPP São Miguel II 100 08.04.2050 São Miguel III Ordinance 350/2015 - WPP São Miguel III 100 08.04.2050 Foz do Chopim Authorization 114/2000 - SHP Arturo Andreoli 35.77 04.24.2030 SHP Bela Vista (a) Resolution 913/2017 - transfer of title under Resolution 7,802/2019 100 01.02.2041 F.D.A. Geração de Energia Elétrica Generation concession contract 002/2020 100 09.17.2023 Jandaíra I Energias Renováveis (a) Ordinance 140/2020 - WPP Jandaíra I 100 04.02.2055 Jandaíra II Energias Renováveis (a) Ordinance 141/2020 - WPP Jandaíra II 100 04.02.2055 Jandaíra III Energias Renováveis (a) Ordinance 142/2020 - WPP Jandaíra III 100 04.02.2055 Jandaíra IV Energias Renováveis (a) Ordinance 139/2020 - WPP Jandaíra IV 100 04.02.2055 (a) Building under construction. Copel GeT Interest % Maturity Next tariff review Transmission lines and substations concession agreements Contract 060/2001 - Transmission facilities (sundry Transmission lines and Substations) - Extended by the 3rd addendum 100 01.01.2043 2023 Contract 075/2001 - Transmission line 230 kV Bateias - Jaguariaíva 100 08.17.2031 (b) Contract 006/2008 - Transmission line 230 kV Bateias - Pilarzinho 100 03.17.2038 2023 Contract 027/2009 - Transmission line 525 kV Foz do Iguaçu - Cascavel Oeste 100 11.19.2039 2025 Contract 010/2010 - Transmission line 500 kV Araraquara II - Taubaté 100 10.06.2040 2021 Contract 015/2010 - Substation Cerquilho III 230/138 kV 100 10.06.2040 2021 Contract 022/2012 - Transmission line 230 kV Londrina - Figueira and Transmission line 230 kV Foz do Chopim - Salto Osório 100 08.27.2042 2023 Contract 002/2013 - Transmission line 230 kV Assis - Paraguaçu Paulista II e Substation Paraguaçu Paulista II 230 kV 100 02.25.2043 2023 Contract 005/2014 - Transmission line 230 kV Bateias - Curitiba Norte e Substation Curitiba Norte 230/138 kV 100 01.29.2044 2024 Contract 021/2014 - Transmission line 230 kV Foz do Chopim - Realeza e Substation Realeza 230/138 kV 100 09.05.2044 2025 Contract 022/2014 - Transmission line 500 kV Assis - Londrina 100 09.05.2044 2025 Contract 006/2016 - Transmission line 525 kV Curitiba Leste - Blumenau (a) 100 04.07.2046 2021 Contract 006/2016 - Transmission line 230 kV Baixo Iguaçu - Realeza Contract 006/2016 - Transmission line 230 kV Curitiba Centro - Uberaba Contract 006/2016 - Substation Medianeira 230/138 kV Contract 006/2016 - Substation Curitiba Centro 230/138 kV Contract 006/2016 - Substation Andirá Leste 230/138 kV Concession agreement / authorization of the equity Costa Oeste Transmissora Contract 001/2012: 100 01.12.2042 2022 Transmission line 230 kV Cascavel Oeste - Umuarama Substation Umuarama 230/138 kV Caiuá Transmissora Contract 007/2012: 49 05.10.2042 2022 Transmission line 230 kV Umuarama - Guaíra Transmission line 230 kV Cascavel Oeste - Cascavel Norte Substation Santa Quitéria 230/138/13,8 kV Substation Cascavel Norte 230/138/13,8 kV Marumbi Transmissora Contract 008/2012: 100 05.10.2042 2022 Transmission line 525 kV Curitiba - Curitiba Leste Substation Curitiba Leste 525/230 kV Integração Maranhense Contract 011/2012: Transmission line 500 Kv Açailândia - Miranda II 49 05.10.2042 2022 Matrinchã Transmissora Contract 012/2012: 49 05.10.2042 2022 Transmission line 500 kV Paranaíta - Cláudia Transmission line 500 kV Cláudia - Paranatinga Transmission line 500 kV Paranatinga - Ribeirãozinho Substation Paranaíta 500 kV Substation Cláudia 500 kV Substation Paranatinga 500 kV Guaraciaba Transmissora Contract 013/2012: 49 05.10.2042 2022 Transmission line 500 kV Ribeirãozinho - Rio Verde Norte Transmission line 500 kV Rio Verde Norte - Marimbondo II Substation Marimbondo II 500 kV Paranaíba Transmissora Contract 007/2013: 24.5 05.02.2043 2023 Transmission line 500 kV Barreiras II - Rio das Éguas Transmission line 500 kV Rio das Éguas - Luziânia Transmission line 500 kV Luziânia - Pirapora 2 Mata de Santa Genebra Contract 001/2014: 50.1 05.14.2044 2024 Transmission line 500 kV Itatiba - Bateias Transmission line 500 kV Araraquara 2 - Itatiba Transmission line 500 kV Araraquara 2 - Fernão Dias Substation Santa Bárbara D ́Oeste 440 kV Substation Itatiba 500 kV Substation Fernão Dias 500/440 kV (a) Cantareira Transmissora Contract 019/2014: Transmission line Estreito - Fernão Dias 49 09.05.2044 2025 Uirapuru Transmissora Contract 002/2005: Transmission line 525 kV Ivaiporã - Londrina 100 03.04.2035 (b) (a) Beginning of commercial operation on April 1, 2021 (b) Do not undergo tariff review and RAP reduces to 50% in the 16th year

3 Basis of Preparation (Tables)

3 Basis of Preparation (Tables)	12 Months Ended
	Dec. 31, 2020
Generation concession agreement in service
Schedule of effects only between the asset	The reclassification also had no impact the covenants of borrowing and debenture agreements. The following tables show the effects only between the asset line items: 12.31.2019 As previously stated Adjustments Restated STATEMENT OF FINANCIAL POSITION ASSETS 38,312,550 - 38,312,550 CURRENT ASSETS 7,909,196 - 7,909,196 Accounts receivable - concessions 58,842 (54,297) 4,545 Contract assets 107,443 54,297 161,740 NONCURRENT ASSETS 30,403,354 - 30,403,354 Accounts receivable - concessions 2,558,796 (684,972) 1,873,824 Contract assets 3,943,941 684,972 4,628,913 01.01.2019 As previously stated (a) Adjustments Restated STATEMENT OF FINANCIAL POSITION ASSETS 36,048,122 - 36,048,122 CURRENT ASSETS 6,677,846 - 6,677,846 Accounts receivable - concessions 53,177 (48,997) 4,180 Contract assets 85,019 48,997 134,016 NONCURRENT ASSETS 29,370,276 - 29,370,276 Accounts receivable - concessions 2,497,514 (704,829) 1,792,685 Contract assets 3,348,211 704,829 4,053,040 (a) The balance considers the adjustments of 01.01.2019 resulting from the initial application of IFRS 16, as shown in Note 4.16 of the Consolidated Financial Statements of December 31, 2019.
Schedule of discontinued operation	12.31.2019 As previously stated Discontinued operations Restated STATEMENTS OF INCOME NET OPERATING REVENUE 16,244,274 (375,029) 15,869,245 Operating costs (11,760,176) 296,028 (11,464,148) GROSS PROFIT 4,484,098 (79,001) 4,405,097 Selling expenses (207,059) 31,287 (175,772) General and administrative expenses (734,300) 23,011 (711,289) Other operational income (expenses) (458,815) 136,309 (322,506) Equity in earnings of investees 106,757 - 106,757 Profit before financial results and taxes 3,190,681 111,606 3,302,287 Financial results (488,486) 33,122 (455,364) Operating profit 2,702,195 144,728 2,846,923 Income tax and social contribution (639,326) (36,335) (675,661) Net income for the period - continuing operations 2,062,869 108,393 2,171,262 Result of discontinued operations - (108,393) (108,393) Net income 2,062,869 - 2,062,869 Attributed to controlling shareholders 1,989,946 - 1,989,946 Attributed to non-controlling interest 72,923 - 72,923 STATEMENTS OF COMPREHENSIVE INCOME Total comprehensive income, net of taxes (123,184) - (123,184) Total comprehensive income 1,939,685 - 1,939,685 Attributed to controlling shareholders 1,862,489 - 1,862,489 Attributed to non-controlling interest 77,196 - 77,196 STATEMENTS OF CASH FLOWS Cash flow from opertional activities 2,945,006 - 2,945,006 Net income 2,062,869 - 2,062,869 Profit adjustments 2,416,665 (419,093) 1,997,572 Changes in assets and liabilities 75,908 38,821 114,729 Taxes and charges paid (1,610,436) 51,464 (1,558,972) Result of discontinued operations - 328,808 328,808 Cash flow from investment activities (1,663,651) - (1,663,651) Property, plant and equipment and intangible assets (548,162) 175,568 (372,594) Other activities (1,115,489) - (1,115,489) Discontinued operations - (175,568) (175,568) Cash flow from financing activities (288,037) - (288,037) Issue of Loans and Debentures 3,761,324 (210,000) 3,551,324 Loan, debentures and lease payments (3,668,940) 9,260 (3,659,680) Other activities (380,421) - (380,421) Discontinued operations - 200,740 200,740 Total effects on cash and cash equivalents 993,318 - 993,318 12.31.2018 As previously stated Discontinued operations Restated STATEMENTS OF INCOME NET OPERATING REVENUE 14,934,780 (384,316) 14,550,464 Operating costs (11,501,688) 128,780 (11,372,908) GROSS PROFIT 3,433,092 (255,536) 3,177,556 Selling expenses (148,709) 43,295 (105,414) General and administrative expenses (723,534) 16,690 (706,844) Other operational income (expenses) (302,690) 52,686 (250,004) Equity in earnings of investees 135,888 - 135,888 Profit before financial results and taxes 2,394,047 (142,865) 2,251,182 Financial results (438,050) 24,905 (413,145) Operating profit 1,955,997 (117,960) 1,838,037 Income tax and social contribution (511,993) 40,827 (471,166) Net income for the period - continuing operations 1,444,004 (77,133) 1,366,871 Result of discontinued operations - 77,133 77,133 Net income 1,444,004 - 1,444,004 Attributed to controlling shareholders 1,407,063 - 1,407,063 Attributed to non-controlling interest 36,941 - 36,941 STATEMENTS OF COMPREHENSIVE INCOME Total comprehensive income, net of taxes (38,360) - (38,360) Total comprehensive income 1,405,644 - 1,405,644 Attributed to controlling shareholders 1,368,549 - 1,368,549 Attributed to non-controlling interest 37,095 - 37,095 STATEMENTS OF CASH FLOWS Cash flow from opertional activities 1,770,971 - 1,770,971 Net income 1,444,004 - 1,444,004 Profit adjustments 1,204,142 (209,217) 994,925 Changes in assets and liabilities 381,474 11,478 392,952 Taxes and charges paid (1,258,649) 83,488 (1,175,161) Result of discontinued operations - 114,251 114,251 Cash flow from investment activities (2,149,153) - (2,149,153) Property, plant and equipment and intangible assets (1,496,644) 280,542 (1,216,102) Other activities (652,509) - (652,509) Discontinued operations - (280,542) (280,542) Cash flow from financing activities 1,286,516 - 1,286,516 Issue of Loans and Debentures 4,205,049 - 4,205,049 Loan and debentures payments (2,617,811) 5,804 (2,612,007) Other activities (300,722) - (300,722) Discontinued operations - (5,804) (5,804) Total effects on cash and cash equivalents 908,334 - 908,334
Schedule of earnings per share	The table shows the values of earnings per share presented in the Financial Statements as of December 31, 2019 and 2018 and the values that are being restated, equivalent to the value already disclosed divided by 10: 12.31.2019 As previously stated Restated Basic and diluted net earning per share attributed to controlling shareholders Common shares 6.94344 0.69440 Class "A" Preferred shares 9.11525 0.85790 Class "B" Preferred shares 7.63812 0.76388 Gross value of dividends per share Common shares 2.24235 0.22423 Class "A" Preferred shares 3.94657 0.39466 Class "B" Preferred shares 2.46692 0.24669 12.31.2018 As previously stated Restated Basic and diluted net earning per share attributed to controlling shareholders Common shares 4.91091 0.49109 Class "A" Preferred shares 5.40201 0.54020 Class "B" Preferred shares 5.40201 0.54020 Gross value of dividends per share Common shares 1.31950 0.13195 Class "A" Preferred shares 2.89050 0.28905 Class "B" Preferred shares 1.45151 0.14515

5 Cash and Cash Equivalents (Ta

5 Cash and Cash Equivalents (Tables)	12 Months Ended
	Dec. 31, 2020
Cash and cash equivalents [abstract]
Schedule of cash and cash equivalents	12.31.2020 12.31.2019 Cash and bank accounts 228,711 263,188 Financial investments with immediate liquidity 2,994,057 2,678,539 3,222,768 2,941,727

6 Bonds and Securities (Tables)

6 Bonds and Securities (Tables)	12 Months Ended
	Dec. 31, 2020
Bonds And Securities [Abstract]
Schedule of bonds and securities	The term of these securities ranges from 4 to 51 months from the end of the reporting period. Category Index 12.31.2020 12.31.2019 Quotas in Funds (a) CDI 237,141 225,804 Bank Deposit Certificates - CDB 90% to 101% of CDI 62,638 50,216 Financial Treasury Bonds - LFT Selic 751 733 Committed Operation 96.5% of CDI - 3,632 National Treasury Bills- LTN CDI - 1,696 300,530 282,081 Current 1,465 3,112 Noncurrent 299,065 278,969 (a) These are fixed income funds in the Parent Company and reserve accounts intended to comply with contracts with BNDES, in other companies.

7 Trade Accounts Receivables (T

7 Trade Accounts Receivables (Tables)	12 Months Ended
	Dec. 31, 2020
Trade and other receivables [abstract]
Schedule of trade accounts receivable	Balances Overdue Overdue for Total Total falling due up to 90 days more than 12.31.2020 12.31.2019 Customers Residential 388,190 211,050 40,184 639,424 579,715 Industrial 213,229 21,048 78,025 312,302 298,719 Commercial 255,691 51,502 28,246 335,439 363,986 Rural 87,666 21,676 309 109,651 103,271 Public Entities 32,687 1,646 3,037 37,370 55,847 Public lighting 42,319 4,296 - 46,615 38,523 Public service 40,856 658 298 41,812 44,983 Unbilled - captives 583,209 - - 583,209 516,203 Energy installments plan - captives (7.1) 206,170 20,011 65,666 291,847 204,192 Low income subsidy - Eletrobras 13,783 - - 13,783 12,174 Free consumers 161,273 1,613 900 163,786 132,756 Other receivables 62,362 23,105 82,803 168,270 148,375 2,087,435 356,605 299,468 2,743,508 2,498,744 Concessionaires, Permission holder and Trading Companies Bilateral contracts 265,432 - - 265,432 191,463 Regulated contracts 162,290 1,792 6,869 170,951 159,492 CCEE (7.2) 533,223 16 119,665 652,904 315,712 Energy suplies 960,945 1,808 126,534 1,089,287 666,667 Charges from using transmission grid 271,008 1,396 9,104 281,508 215,582 . Telecommunications - - - - 67,304 Gas distribution 56,862 1,342 12,724 70,928 111,026 Expected credit losses (7.3) (7,610) (11,964) (345,977) (365,551) (376,756) 3,368,640 349,187 101,853 3,819,680 3,182,567 Current 3,768,242 3,120,168 Noncurrent 51,438 62,399
Schedule of allowance for doubtful accounts	Balance as of Additions / Reversal Balance as of Additions / Reversal Reclassi- Balance as of January 1, 2019 (Reversals) of write offs December 31, 2019 (Reversals) of write offs fication (a) December 31, 2020 Customers Residential 21,722 71,794 (51,692) 41,824 65,937 (60,365) - 47,396 Industrial 87,197 33,772 (23,015) 97,954 22,487 (31,575) - 88,866 Commercial 69,717 27,866 (26,658) 70,925 29,092 (31,294) - 68,723 Rural 3,810 1,499 (1,920) 3,389 4,788 (4,240) - 3,937 Public Entities 4,874 435 (419) 4,890 9 (1,815) - 3,084 Public lighting 120 (117) - 3 20 (15) - 8 Public service 199 145 (79) 265 124 (246) - 143 Unbilled 1,502 (322) - 1,180 409 - - 1,589 Adjustment to present value (2,883) 1,442 - (1,441) 791 - - (650) 186,258 136,514 (103,783) 218,989 123,657 (129,550) - 213,096 Concessionaires, Permission holder and Trading Companies CCEE (7.2) 119,665 - - 119,665 - - - 119,665 Concessionaries and permission holder 9,474 11,608 (657) 20,425 392 (284) - 20,533 129,139 11,608 (657) 140,090 392 (284) - 140,198 Telecommunications 3,879 13,292 (12,022) 5,149 3,609 (6,260) (2,498) - Gas distribution 12,112 1,063 (647) 12,528 238 (509) - 12,257 331,388 162,477 (117,109) 376,756 127,896 (136,603) (2,498) 365,551

8 CRC Transferred to the Para_2

8 CRC Transferred to the Parana State Government (Tables)	12 Months Ended
	Dec. 31, 2020
CRC Transferred To Parana State Government [Abstract]
Schedule of changes in CRC	8.1 Changes in CRC Balance as of Monetary Balance as of Monetary Balance as of January 1, 2019 Interest variations Amortizations December 31, 2019 Interest variations Amortizations December 31, 2020 1,445,042 87,710 96,519 (278,586) 1,350,685 80,788 261,176 (300,025) 1,392,624 Current 219,236 287,789 Noncurrent 1,131,449 1,104,835
Schedule of maturity of noncurrent installments	8.2 Maturity of noncurrent installments 2022 306,928 2023 327,341 2024 349,111 2025 121,455 1,104,835

9 Net Sectorial Financial Ass_2

9 Net Sectorial Financial Assets and Liabilities (Tables)	12 Months Ended
	Dec. 31, 2020
Net Sectorial Financial Assets And Liabilities [Abstract]
Schedule of net sectorial financial assets and liabilities	9.1 Compositions of net sectorial financial assets and liabilities balances per tariff cycle 12.31.2020 12.31.2019 Current Noncurrent Current Noncurrent Sectorial financial assets - Electricity rate adjustment recoverable 2019 Portion A Electricity purchased for resale - CVA Energ - - 235,192 - Electricity purchased for resale - Itaipu - - 342,647 - Transport of energy using the transmission system - basic grid - - (47,214) - Transport of energy purchased from Itaipu - - 9,937 - System Service Charges - ESS - - (160,277) - Energy Development Account - CDE - - 98,722 - Proinfa - - 8,528 - Neutrality - - 29,690 - Overcontracting - - (116,673) - Hydrological risk - - (119,416) - Tariff refunds - - (43,538) - Other - - (448) - - - 237,150 - Sectorial financial assets - Electricity rate adjustment recoverable 2020 Portion A Electricity purchased for resale - CVA Energ - - 15,298 15,298 Electricity purchased for resale - Itaipu - - 225,340 225,340 Transport of energy using the transmission system - basic grid - - 30,126 30,126 Transport of energy purchased from Itaipu - - 7,227 7,227 System Service Charges - ESS - - (52,336) (52,336) Energy Development Account - CDE - - 27,103 27,103 Proinfa - - (30) (30) Neutrality - - 9,408 9,408 Offset of energy surplus/deficit under CCEAR bilateral contracts - - 20,096 20,096 Overcontracting - - (25,725) (25,725) Hydrological risk - - (113,872) (113,872) Tariff refunds - - (24,215) (24,216) - - 118,420 118,419 Sectorial financial assets - Electricity rate adjustment recoverable 2021 Portion A Electricity purchased for resale - CVA Energ (54,864) (54,864) - - Electricity purchased for resale - Itaipu 231,588 231,588 - - Transport of energy using the transmission system - basic grid 88,137 88,137 - - Transport of energy purchased from Itaipu 9,766 9,766 - - System Service Charges - ESS 11,266 11,266 - - Energy Development Account - CDE (903) (903) - - Proinfa (89) (89) - - Neutrality 27,923 27,923 - - Overcontracting 78,836 78,836 - - Hydrological risk (143,147) (143,147) - - Tariff refunds (76,144) (76,144) - - Other 1,096 1,096 - - 173,465 173,465 - - 173,465 173,465 355,570 118,419 12.31.2020 12.31.2019 Current Noncurrent Current Noncurrent Sectorial financial liabilities - Electricity rate adjustment recoverable 2020 Portion A Electricity purchased for resale - CVA Energ 9,675 - - - ESS (3,401) - - - CDE (66) - - - Proinfa 33 - - - Transport of energy using the transmission system - basic grid 603 - - - Transport of energy purchased from Itaipu 214 - - - Offset of energy surplus/deficit under CCEAR bilateral contracts 36,395 - - - Hydrological risk (187,817) - - - Tariff refunds (41,381) - - - Overcontracting (26,995) - - - Neutrality 21,419 - - - Other 2,612 - - - (188,709) - - - Sectorial financial liabilities - Tariff Review 2021 Financial components Tariff refunds - - - (102,284) - - - (102,284) (188,709) - - (102,284)
Schedule of changes in net sectorial financial assets and liabilities	9.2 Changes in net sectorial financial assets and liabilities Balance as of Operating revenues Financial results Write-offs Covid Account Rate Balance as of 1-Jan-20 Constitution Amortization Updating flags 31-Dec-20 Portion A Electricity purchased for resale - Itaipu 793,327 893,581 (354,300) 28,197 (897,629) - 463,176 Electricity purchased for resale - CVA Energ 265,788 (242,246) (253,482) 1,076 164,804 (35,993) (100,053) Transport of energy using the transmission system - basic grid 13,038 265,030 48,154 1,715 (151,060) - 176,877 Transport of energy purchased from Itaipu 24,391 31,762 (10,503) 801 (26,705) - 19,746 ESS (264,949) (72,032) 169,396 (8,854) 249,724 (54,154) 19,131 CDE 152,928 56,608 (102,027) 5,065 (114,446) - (1,872) Proinfa 8,468 (21,615) (8,856) (181) 22,039 - (145) Other financial components Neutrality 48,506 95,870 (52,843) 187 (14,455) - 77,265 Offset of energy surplus/deficit under CCEAR bilateral contracts 40,192 75,917 (79,714) - - - 36,395 Hydrological risk (347,160) (444,291) 322,432 (5,092) - - (474,111) Tariff refunds (194,253) (83,514) 88,269 (4,171) - - (193,669) Overcontracting (168,123) 274,051 145,853 663 (101,788) (19,979) 130,677 Others (448) 6,927 (2,375) 700 - - 4,804 371,705 836,048 (89,996) 20,106 (869,516) (110,126) 158,221 Current assets 355,570 173,465 Noncurrent assets 118,419 173,465 Current liabilities - (188,709) Noncurrent liabilities (102,284) - Balance as of Operating revenues Financial results Rate Balance as of January 1, 2019 Constitution Amortization Updating flags December 31, 2019 Portion A Electricity purchased for resale - Itaipu 886,243 533,057 (670,501) 44,528 - 793,327 Electricity purchased for resale - CVA Energ 626,891 358,200 (546,801) 29,909 (202,411) 265,788 Transport of energy using the transmission system - basic grid (30,514) 22,917 23,688 (3,053) - 13,038 Transport of energy purchased from Itaipu 23,250 19,531 (19,692) 1,302 - 24,391 ESS (481,972) (188,280) 427,177 (21,874) - (264,949) CDE 159,084 110,752 (127,190) 10,282 - 152,928 Proinfa 2,989 17,396 (12,636) 719 - 8,468 Other financial components Neutrality 123,028 (1,122) (74,698) 1,298 - 48,506 Offset of energy surplus/deficit under CCEAR bilateral contracts 5,237 80,385 (45,430) - - 40,192 CVA Angra III Adjustment 6,272 - (6,272) - - - Hydrological risk (319,033) (324,504) 304,197 (7,820) - (347,160) Tariff refunds (180,963) (89,327) 83,900 (7,863) - (194,253) Overcontracting (238,416) (22,166) 173,087 (5,774) (74,854) (168,123) Others 192 (905) 294 (29) - (448) 582,288 515,934 (490,877) 41,625 (277,265) 371,705 Current assets 421,184 355,570 Noncurrent assets 257,635 118,419 Noncurrent liabilities (96,531) (102,284)

10 Accounts Receivable Concessi

10 Accounts Receivable Concessions (Tables)	12 Months Ended
	Dec. 31, 2020
Accounts Receivable Concessions
Schedule of accounts receivable related to the concession	Restated Restated 12.31.2020 12.31.2019 01.01.2019 Power distribution service concession (10.1) 960,518 836,818 783,023 Piped gas distribution service concession (10.2) 189,416 324,385 322,259 Bonus from the grant of concession agreements under the quota system (10.3) 671,204 647,984 625,772 Generation concession agreements (10.4) 81,202 69,182 65,811 1,902,340 1,878,369 1,796,865 Current 4,515 4,545 4,180 Noncurrent 1,897,825 1,873,824 1,792,685
Schedule of power distribution service concession	10.1 Power distribution service concession Balance as of January 1, 2019 783,023 Transfers from contract assets (Note 11.1) 28,987 Transfers from investments 348 Transfers to other receivables (assets held for disposal) (1,578) Fair value recognition 26,231 Incorporations (75) Loss on disposal (118) Balance as of December 31, 2019 836,818 Transfers from contract assets (Note 11.1) 86,154 Transfers to intangible assets (Note 18.1) (99) Transfers to other receivables (assets held for disposal) (7,428) Fair value recognition 45,187 Loss on disposal (114) Balance as of December 31, 2020 960,518
Schedule of piped gas distribution service concession	10.2 Piped gas distribution service concession Balance as of January 1, 2019 322,259 Transfers from contract assets (Note 11.2) 16,574 Transfers to intangible assets (Note 18.3) (24,835) Fair value recognition 10,415 Loss on disposal (28) Balance as of December 31, 2019 324,385 Transfers from contract assets (Note 11.2) 7,390 Transfers to intangible assets (Note 18.3) (154,483) Fair value recognition 12,154 Loss on disposal (30) Balance as of December 31, 2020 189,416
Schedule of bonus from the grant of concession agreements under the quota system	10.3 Bonus from the grant of concession agreements under the quota system Balance as of January 1, 2019 625,772 Transfers to electricity grid use charges - customers (69,192) Interest (Note 31) 91,404 Balance as of December 31, 2019 647,984 Transfers to electricity grid use charges - customers (71,087) Interest (Note 31) 94,307 Balance as of December 31, 2020 671,204
Schedule of power generation concession contract	10.4 Power generation concession contract Balance as of January 1, 2019 65,811 Gain on remeasurement of the cash flow 426 Reversal of impairment (Note 32.4) 2,945 Balance as of December 31, 2019 69,182 Gain on remeasurement of the cash flow 1,518 Reversal of impairment (Note 32.4) 10,502 Balance as of December 31, 2020 81,202

11 Contract Assets (Tables)

11 Contract Assets (Tables)	12 Months Ended
	Dec. 31, 2020
Contract assets [abstract]
Schedule of summary of contract assets	Restated Restated 12.31.2020 12.31.2019 01.01.2019 Power distribution service concession (11.1) 1,114,961 844,284 640,500 Piped gas distribution service concession (11.2) 27,254 26,734 25,718 Power transmission concession (11.3) 4,350,582 3,919,635 3,520,838 5,492,797 4,790,653 4,187,056 Current 285,682 161,740 134,016 Noncurrent 5,207,115 4,628,913 4,053,040
Schedule of power distribution service concession contract	11.1 Power distribution service concession contract Assets Special liabilities Total Balance as of January 1, 2019 664,755 (24,255) 640,500 Acquisitions 1,021,644 - 1,021,644 Customers contributions - (104,067) (104,067) Provision for legal claims added to the cost of the works 1,823 - 1,823 Transfers to intangible assets (Note 18.1) (771,844) 93,164 (678,680) Transfers to accounts receivable - concessions (Note 10.1) (33,075) 4,088 (28,987) Loss on disposal (7,949) - (7,949) Balance as of December 31, 2019 875,354 (31,070) 844,284 Acquisitions 1,391,267 - 1,391,267 Customers contributions - (112,689) (112,689) Provision for legal claims added to the cost of the works 1,522 - 1,522 Transfers to intangible assets (Note 18.1) (1,016,482) 105,116 (911,366) Transfers to accounts receivable - concessions (Note 10.1) (94,978) 8,824 (86,154) Loss on disposal (11,903) - (11,903) Balance as of December 31, 2020 1,144,780 (29,819) 1,114,961
Schedule of piped gas distribution service concession contract	11.2 Piped gas distribution service concession contract Balance as of January 1, 2019 25,718 Acquisitions 17,590 Transfers from/to accounts receivable - concessions (Note 10.2) (16,574) Balance as of December 31, 2019 26,734 Acquisitions 15,187 Transfers to intangible assets (Note 18.3) (7,277) Transfers to accounts receivable - concessions (Note 10.2) (7,390) Balance as of December 31, 2020 27,254
Schedule of transmission service concession contract	11.3 Transmission service concession contract Concession assets RBSE assets Total Balance as of January 1, 2019 2,166,757 1,354,081 3,520,838 Business combinations efects 117,942 - 117,942 Realization of gains/losses in business combinations 282 - 282 Transfers to electricity grid use charges - customers (176,724) (214,336) (391,060) Transfers to property, plant and equipment (3,353) - (3,353) Transfer of judicial deposits and litigation (313) - (313) Remuneration 280,630 177,961 458,591 Construction revenue 175,219 - 175,219 Construction income 2,892 - 2,892 Efficiency gain (11.3.1) 38,597 - 38,597 Balance as of December 31, 2019 2,601,929 1,317,706 3,919,635 Realization of gains/losses in business combinations 722 - 722 Transfers to electricity grid use charges - customers (312,120) (266,027) (578,147) Transfers to property, plant and equipment (613) - (613) Transfers from litigations (576) - (576) Remuneration 489,438 291,669 781,107 Construction revenue 255,578 - 255,578 Construction income 4,217 - 4,217 Loss from inefficiency (11.3.1) (7,654) - (7,654) Write-offs (23,687) - (23,687) Balance as of December 31, 2020 3,007,234 1,343,348 4,350,582
Schedule of assumptions adopted for the calculation of contract assets	11.3.2 Assumptions adopted for the calculation of contract assets Concession assets RBSE assets Construction income 1.65% N/A Operating and maintenance margin 1.65% N/A Remuneration rate (a) 9,58% p.y. 9,54% p.y. Contract correction index IPCA (b) IPCA Annual RAP, according to Homologatory Resolution 415,455 279,406 Construction cost incurred up to 12.31.2020 of works in progress Contract 006/2016 - TL 525 kV Curitiba Leste - Blumenau 238,233 N/A (a)Average rate of contracts (b) Contract 075/2001 - LT 230 kV Bateias - Jaguariaíva, from Copel GET, and contract 002/2005 - LT 525 kV Ivaiporã - Londrina, from Uirapuru, are adjusted by the IGPM.

12 Other Receivables (Tables)

12 Other Receivables (Tables)	12 Months Ended
	Dec. 31, 2020
Other Receivables [Abstract]
Schedule of other receivables	12.31.2020 12.31.2019 Fair value in the purchase and sale of power (Note 35.2.12) 689,531 460,635 Services in progress (a) 260,348 228,593 Credits on purchases of gas (12.1) 120,515 142,941 CDE Transfer (12.2) 60,433 61,898 Advance payments to suppliers (b) 36,609 24,073 Advance payments to employees 17,785 20,427 Derivatives fair value - forward contract (Note 35.2.3 - b) 23,308 - Decommissioning in progress 36,855 21,238 Advance for severance estate 14,484 15,597 Tariff flag - CCRTB 7,194 19,545 Insurance entities - 24,574 Other receivables 92,583 69,103 1,359,645 1,088,624 Current 514,185 426,865 Noncurrent 845,460 661,759 (a) This item refers to services currently in progress within the Company, most of which are related to the Research and Development and Energy Efficiency programs, which upon conclusion are offset against the respective liability recorded for this purpose. (b) Advances to suppliers provided on contractual clauses.

13 Taxes (Tables)

13 Taxes (Tables)	12 Months Ended
	Dec. 31, 2020
Taxes [Abstract]
Schedule of deferred income tax and social contribution	13.1 Deferred income tax and social contribution Business Recognized Recognized Balance as of Recognized combination comprehensive Balance as of Recognized Reclassi- comprehensive Balance as of January 1, 2019 in income effect income December 31, 2019 in income fication (a) income December 31, 2020 Noncurrent assets Provisions for legal claims 573,177 (62,662) 6,237 - 516,752 (6,072) - - 510,680 Post-employment benefits 328,685 13,285 - 63,444 405,414 9,433 - 92,190 507,037 Impairment of assets 328,011 57,456 - - 385,467 (63,827) - - 321,640 Research and development and energy efficiency programs 154,491 10,840 - - 165,331 (12,833) - - 152,498 Expected credit losses 114,010 17,811 - - 131,821 (2,868) - - 128,953 Tax losses and negative tax basis 71,140 27,102 - - 98,242 144,493 - - 242,735 Social security contributions - injunction on judicial deposit 67,010 4,190 - - 71,200 3,340 - - 74,540 Provisons by performance andprofit sharing 30,548 21,567 - - 52,115 109,622 - - 161,737 Amortization - concession 53,339 5,005 - - 58,344 (11,135) - - 47,209 Concession contracts 23,606 (1,253) - - 22,353 (1,292) - - 21,061 Provision for energy purchases 155,570 (137,531) - - 18,039 - - - 18,039 (-) Reclassification (a) - (1,771) (81,971) - (83,742) Others 147,771 (4,512) - - 143,259 22,634 - - 165,893 2,047,358 (48,702) 6,237 63,444 2,068,337 189,724 (81,971) 92,190 2,268,280 (-) Noncurrent liabilities Concession contracts 613,658 99,199 (1,026) - 711,831 188,674 - - 900,505 Deemed cost 415,325 (34,116) - - 381,209 (30,718) - - 350,491 Derivative financial instruments 5,030 65,915 - - 70,945 46,737 - - 117,682 Escrow deposits monetary variation 64,167 (3,022) - - 61,145 1,981 - - 63,126 Accelerated depreciation 32,682 17,640 - - 50,322 25,633 - - 75,955 Transaction cost on borrowings and debentures 31,127 981 - - 32,108 (7,539) - - 24,569 (-) Reclassification (a) - 478 (3,243) - (2,765) Others 35,728 6,849 - - 42,577 (10,626) - - 31,951 1,197,717 153,446 (1,026) - 1,350,137 214,620 (3,243) - 1,561,514 Net 849,641 (202,148) 7,263 63,444 718,200 (24,896) (78,728) 92,190 706,766 Assets presented in the Statement of Financial Position 1,007,061 1,011,866 1,191,104 (-) Liabilities presented in the Statement of Financial Position (157,420) (293,666) (484,338)
Schedule of realization of deferred taxes	The projected realization of the deferred taxes is shown below: Assets Liabilities 2021 618,750 (108,316) 2022 223,243 (94,626) 2023 117,380 (110,243) 2024 80,174 (121,232) 2025 80,408 (92,592) 2026 to 2028 179,810 (257,513) 2029 to 2030 968,515 (776,992) 2,268,280 (1,561,514)
Schedule of other taxes recoverable and other tax obligations	13.2 Other taxes recoverable and other tax obligations 12.31.2020 12.31.2019 Current assets Recoverable ICMS (VAT) 89,942 103,977 Recoverable PIS/Pasep and Cofins taxes (13.2.1) 1,474,119 98,942 Other recoverable taxes 1,262 2,141 1,565,323 205,060 Noncurrent assets Recoverable ICMS (VAT) 84,376 74,568 Recoverable PIS/Pasep and Cofins taxes (13.2.1) 4,421,403 213,667 Other recoverable taxes 33,719 33,776 4,539,498 322,011 Current liabilities ICMS (VAT) payable 201,138 179,662 PIS/Pasep and Cofins payable 179,133 125,197 IRRF on JSCP 43,950 117,807 Special Tax Regularization Program - Pert 50,565 49,310 Ordinary financing of taxes with the federal tax authorities - 18,063 Other taxes 15,822 11,029 490,608 501,068 Noncurrent liabilities Social security contributions - injunction on judicial deposit 209,145 209,747 Special Tax Regularization Program - Pert 408,738 447,897 Other taxes 4,600 4,470 622,483 662,114
Schedule of balance sheet and statement of income	The table below shows the impacts of these records on Copel's balance sheet and statement of income: 12.31.2020 Tax credit - principal 3,620,118 Tax credit - monetary update 2,035,636 Effect on assets 5,655,754 Pis and Cofins to be refunded to consumers (3,805,985) Tax liabilities - Pis/Pasep and Cofins payable on financial income (94,657) Income tax and social contribution (596,738) Effect on liabilities (4,497,380) EFFECT ON BALANCE SHEET 1,158,374 Net operating revenue 810,563 Financial income, net of pis and cofins 944,549 Income tax and social contribution (596,738) EFFECT ON THE INCOME STATEMENT 1,158,374
Schedule of pis and cofins to be refunded to consumers	The amounts of Pis and Cofins of Copel DIS for the months of March to June 2020, which have not yet been paid when the action was concluded were remeasured with the effects from the court decision and reclassified to the liability account to be refunded to consumers.The table below shows, therefore, the total balance to be returned to consumers recorded in balance sheet: Pis and Cofins to be refunded to consumers 12.31.2020 Calculated until February 2020 3,805,985 Calculated from March to June 2020 121,838 3,927,823 Current 121,838 Noncurrent 3,805,985
Schedule of reconciliation of provision for income tax (IRPJ) and social contribution (CSLL)	13.3 Reconciliation of provision for income tax (IRPJ) and social contribution (CSLL) Restated Restated 12.31.2020 12.31.2019 12.31.2018 Income before IRPJ and CSLL 5,119,537 2,846,923 1,838,037 IRPJ and CSLL (34%) (1,740,643) (967,954) (624,933) Tax effects on: Equity in income 65,806 36,297 36,555 Interest on own capital 276,808 222,848 90,440 Dividends 243 192 497 Non deductible expenses (17,133) (15,274) (26,291) Tax incentives 28,572 17,804 13,860 Unrecognized income and social contribution tax loss carry-forwards (39,421) (48,892) (5,645) Difference between the calculation bases of deemed profit and taxable profit 121,242 72,175 (19,680) Others 19,161 7,143 17,486 Current IRPJ and CSLL (1,260,469) (416,687) (522,550) Deferred IRPJ and CSLL (24,896) (258,974) 51,384 Effective rate - % 25.1% 23.7% 25.6%

14 Prepaid Expenses (Tables)

14 Prepaid Expenses (Tables)	12 Months Ended
	Dec. 31, 2020
Prepaid Expenses [Abstract]
Schedule of prepaid expenses	12.31.2020 12.31.2019 Program for incentive to alternative energy sources - Proinfa 22,408 18,504 Insurance premiums 14,453 11,693 Risk premium - GSF renegotiation (14.1) - 3,180 Others 170 318 37,031 33,695 Current 36,987 33,563 Noncurrent 44 132
Schedule of recovery of power purchase cost through renegotiation	The amounts originally recognized on the renegotiation of the hydrological risk were as follows: Power Plant Physical guarantee (Average MW) Eligible amount of energy (Average MW) Amortization period Grant extension period (intangible asset) Asset value to recover as renegotiation of GSF Value of prepaid expenses to amortize with future risk premium Value of intangible assets amortization over the concession period Mauá 100,827 97,391 01.01.2016 to 06.30.2020 not applicable 28,623 28,623 - Foz do Areia 576,000 226,705 01.01.2016 to 12.31.2016 05.24.2023 to 09.17.2023 66,628 17,222 49,406 Santa Clara and Fundão 135,400 134,323 01.01.2016 to 04.22.2019 10.25.2036 to 05.28.2037 39,369 30,326 9,043 458,419 134,620 76,171 58,449
Schedule of CCEE liabilities	A breakdown of these items as at December 31, 2020 and 2019 is presented below: Balance as of Balance as of Balance as of January 1, 2019 Amortization Transfers December 31, 2019 Amortization December 31, 2020 Risk premium - current asset 9,394 (9,394) 3,180 3,180 (3,180) - Risk premium - noncurrent asset 3,180 - (3,180) - - - Intangible 38,707 (7,040) - 31,667 (7,039) 24,628 51,281 (16,434) - 34,847 (10,219) 24,628 Risk premium to be amortized - prepaid expenses 12,574 3,180 - Grant extension period - intangible 38,707 31,667 24,628

15 Judicial Deposits (Tables)

15 Judicial Deposits (Tables)	12 Months Ended
	Dec. 31, 2020
Judicial Deposits [Abstract]
Schedule of judicial deposits	12.31.2020 12.31.2019 Taxes claims 346,659 351,402 Labor claims 72,263 85,187 Civil Civil 57,006 53,260 Easements 7,156 5,076 Customers 3,479 1,897 67,641 60,233 . Others 183 7,368 486,746 504,190

16 Investiments (Tables)

16 Investiments (Tables)	12 Months Ended
	Dec. 31, 2020
Investiments
Schedule of changes in investments	16.1 Changes in investments Balance as of Investment/ Capital Amorti- Dividends Other Balance as of January 1, 2020 Equity AFAC decrease zation and JSCP (a) December 31, 2020 Joint Ventures (16.3) Voltalia São Miguel do Gostoso I 110,099 (2,378) - - - - - 107,721 Voltalia São Miguel do Gostoso - direito de autorização 10,038 - - - (367) - - 9,671 Caiuá 78,312 (8,964) 26,014 - - - - 95,362 Integração Maranhense 138,716 13,672 - - - (3,807) - 148,581 Matrinchã 711,527 25,644 - - - (2,668) - 734,503 Guaraciaba 337,077 25,528 - - - (1,435) - 361,170 Paranaíba 173,973 29,708 - - - - - 203,681 Mata de Santa Genebra 573,357 48,594 39,479 - - - - 661,430 Cantareira 338,268 42,666 - - - (21,248) - 359,686 Solar Paraná - (115) 6,946 - - - - 6,831 2,471,367 174,355 72,439 - (367) (29,158) - 2,688,636 Associates Dona Francisca Energética (16.4) 28,423 9,674 - - - (9,950) - 28,147 Foz do Chopim Energética (16.4) 12,175 9,629 - - - (11,818) - 9,986 Dominó Holdings 246 (93) - - - - (153) - Other 10,155 (18) - (228) - - (7,969) 1,940 50,999 19,192 - (228) - (21,768) (8,122) 40,073 Investment property 813 - - - (5) - - 808 2,523,179 193,547 72,439 (228) (372) (50,926) (8,122) 2,729,517 (a) R$ 7,969 of Impairment of Estação Osasco Desenvolvimento Imobiliário SA, an associate of UEG Araucária, and R$ 153 of liquidation of Dominó. Investment/ Balance as of Advance for future Capital Amorti- Dividends Balance as of January 1, 2019 Equity capital increase decrease zation and JSCP Transfers December 31, 2019 Joint Ventures (16.3) Voltalia São Miguel do Gostoso I 110,568 (3,409) 2,940 - - - - 110,099 Voltalia São Miguel do Gostoso - direito de autorização 10,405 - - - (367) - - 10,038 Caiuá 74,639 4,800 - - - (1,127) - 78,312 Integração Maranhense 129,684 11,316 - - - (2,284) - 138,716 Matrinchã 673,216 48,634 - - - (10,323) - 711,527 Guaraciaba 356,941 18,312 - (34,300) - (3,876) - 337,077 Paranaíba 160,584 16,375 - - - (2,986) - 173,973 Mata de Santa Genebra 484,262 (41,716) 130,811 - - - - 573,357 Cantareira 317,523 28,031 - - - (7,286) - 338,268 2,317,822 82,343 133,751 (34,300) (367) (27,882) - 2,471,367 Associates Dona Francisca Energética (16.4) 29,144 9,853 - - - (10,574) - 28,423 Foz do Chopim Energética (16.4) 8,227 13,924 - - - (9,976) - 12,175 Dominó Holdings 2,442 (280) - (735) - (1,181) - 246 Other 9,115 917 123 - - - - 10,155 48,928 24,414 123 (735) - (21,731) - 50,999 Investment property 1,342 - - - (5) - (524) 813 Advance for future capital future capital increase 142 - 133,597 - - - (133,739) - 2,368,234 106,757 267,471 (35,035) (372) (49,613) (134,263) 2,523,179
Schedule of subsidiaries with non-controlling interest summarized financial information	16.2.1 Summarized financial information Compagás Elejor UEG Araucária 12.31.2020 12.31.2019 12.31.2018 12.31.2020 12.31.2019 12.31.2018 12.31.2020 12.31.2019 12.31.2018 ASSETS 749,434 904,993 675,286 705,233 625,154 652,175 554,079 421,533 436,137 Current assets 245,028 313,896 204,725 165,150 80,079 80,990 392,775 80,788 33,573 Noncurrent assets 504,406 591,097 470,561 540,083 545,075 571,185 161,304 340,745 402,564 LIABILITIES 749,434 904,993 675,286 705,233 625,154 652,175 554,079 421,533 436,137 Current liabilities 173,144 236,190 133,769 95,465 85,647 124,880 309,265 91,066 42,185 Noncurrent liabilities 81,230 110,475 106,900 596,278 496,648 473,318 6,603 14,727 23,290 Equity 495,060 558,328 434,617 13,490 42,859 53,977 238,211 315,740 370,662 STATEMENT OF INCOME Operating revenues 535,206 866,884 588,532 194,849 218,421 293,942 589,909 52,216 524 Operating costs and expenses (452,495) (662,306) (515,594) (67,323) (86,237) (89,931) (647,516) (131,596) (94,970) Financial results (764) 43,186 (2,411) (172,049) (92,728) (89,301) 203 832 2,275 Equity in earnings of investees - - - - - - - 916 - Income tax and social contribution (22,967) (74,791) (10,909) 15,154 (13,331) (38,379) (19,920) (22,703) 16,316 Net income (loss) 58,980 172,973 59,618 (29,369) 26,125 76,331 (77,324) (100,335) (75,855) Other comprehensive income (343) (1,277) 187 - - - (205) 132 - Total comprehensive income 58,637 171,696 59,805 (29,369) 26,125 76,331 (77,529) (100,203) (75,855) STATEMENTS OF CASH FLOWS Cash flows from operational activities 101,708 54,760 66,017 22,097 51,839 127,108 23,491 (57,585) (26,980) Cash flows from investment activities (17,120) (17,531) (15,961) (208) (314) (2,659) 1,317 (1,945) (2,768) Cash flows from financing activities (115,625) 14,312 (43,980) (8,151) (56,533) (119,468) 32,879 45,133 - TOTAL EFFECTS ON CASH AND CASH EQUIVALENTS (31,037) 51,541 6,076 13,738 (5,008) 4,981 57,687 (14,397) (29,748) Cash and cash equivalents at the beginning of the year 141,696 90,155 84,079 37,878 42,886 37,905 7,119 21,516 51,264 Cash and cash equivalents at the end of the year 110,659 141,696 90,155 51,616 37,878 42,886 64,806 7,119 21,516 CHANGE IN CASH AND CASH EQUIVALENTS (31,037) 51,541 6,076 13,738 (5,008) 4,981 57,687 (14,397) (29,748)
Schedule of changes in equity attributable to non-controlling shareholders	16.2.2 Changes in equity attributable to non-controlling shareholders Participation in capital stock Compagás Elejor UEG Araucária 18,8% Total Balance as of January 1, 2018 194,901 18,518 89,242 302,661 Net income (loss) 29,213 22,899 (15,171) 36,941 Other comprehensive income 91 - 63 154 Dividends (11,243) (25,224) - (36,467) Balance as of December 31, 2018 212,962 16,193 74,134 303,289 Net income (loss) 84,758 7,838 (19,673) 72,923 Other comprehensive income (626) - 25 (601) Additional dividends proposed - (3,335) - (3,335) Dividends (23,514) (7,838) - (31,352) Gain with interest variation in Subsidiary - - 4,874 4,874 Balance as of December 31, 2019 273,580 12,858 59,360 345,798 Net income (loss) 28,898 (8,812) (14,538) 5,548 Other comprehensive income (168) - (39) (207) Additional dividends proposed (51,799) - - (51,799) Dividends (7,933) - - (7,933) Balance as of December 31, 2020 242,578 4,046 44,783 291,407
Schedule of summarized information on the main jointly controlled subsidiaries	16.3 Summarized information on the main joint ventures Voltalia Caiuá Integração Maranhense Matrinchã Guaraciaba Paranaíba Mata de Santa Genebra Cantareira Balance as of December 31, 2020 ASSETS 222,038 267,425 475,734 2,357,028 1,269,378 1,687,613 2,712,737 1,567,577 Current assets 3,623 31,048 59,709 261,168 165,063 179,229 340,382 165,816 Cash and cash equivalents 3,579 6,871 12,696 46,198 25,565 20,820 61,171 34,435 Other current assets 44 24,177 47,013 214,970 139,498 158,409 279,211 131,381 Noncurrent assets 218,415 236,377 416,025 2,095,860 1,104,315 1,508,384 2,372,355 1,401,761 . LIABILITIES 222,038 267,425 475,734 2,357,028 1,269,378 1,687,613 2,712,737 1,567,577 Current liabilities 2,199 18,995 51,926 192,512 86,163 78,981 158,350 63,206 Financial liabilities - 7,392 13,180 80,141 28,741 62,143 104,308 41,314 Other current liabilities 2,199 11,603 38,746 112,371 57,422 16,838 54,042 21,892 Noncurrent liabilities - 53,816 120,579 665,528 446,133 777,279 1,234,165 770,317 Financial liabilities - 42,864 65,624 612,413 446,801 545,200 1,215,988 489,784 Other noncurrent liabilities - 10,952 54,955 53,115 (668) 232,079 18,177 280,533 Equity 219,839 194,614 303,229 1,498,988 737,082 831,353 1,320,222 734,054 . STATEMENT OF INCOME Net operating income - 17,927 31,418 328,171 109,978 478,147 364,070 196,039 Operating costs and expenses (66) (34,584) 11,706 (160,795) (8,317) (18,801) (125,569) (23,533) Financial results 32 (3,389) (5,229) (71,164) (38,883) (48,184) (91,947) (40,630) Equity in income of subsidiaries (4,893) - - - - - - - Income tax and social contribution - 1,752 (9,991) (30,178) (22,084) (125,646) (49,560) (44,805) Net income (loss) (4,927) (18,294) 27,904 66,034 40,694 285,516 96,994 87,071 Other comprehensive income - - - - - - - - Total comprehensive income (4,927) (18,294) 27,904 66,034 40,694 285,516 96,994 87,071 Investment interest - % 49.0 49.0 49.0 49.0 49.0 24.5 50.1 49.0 Investment book value 107,721 95,362 148,581 734,503 361,170 203,681 661,430 359,686 Voltalia Caiuá Integração Maranhense Matrinchã Guaraciaba Paranaíba Mata de Santa Genebra Cantareira Balance as of December 31, 2019 ASSETS 226,898 271,409 486,305 2,295,925 1,318,517 1,625,008 2,482,326 1,496,577 Current assets 3,664 30,472 59,466 301,722 150,875 178,558 268,381 182,971 Cash and cash equivalents 1,494 3,968 6,570 85,293 44,805 20,338 48,395 60,252 Other current assets 2,170 26,504 52,896 216,429 106,070 158,220 219,986 122,719 Noncurrent assets 223,234 240,937 426,839 1,994,203 1,167,642 1,446,450 2,213,945 1,313,606 . LIABILITIES 226,898 271,409 486,305 2,295,925 1,318,517 1,625,008 2,482,326 1,496,577 Current liabilities 2,206 28,892 77,116 166,430 84,863 104,065 129,810 72,907 Financial liabilities - 7,584 13,468 82,665 33,102 60,399 93,643 48,619 Other current liabilities 2,206 21,308 63,648 83,765 51,761 43,666 36,167 24,288 Noncurrent liabilities - 82,699 126,095 677,398 545,742 810,847 1,208,089 733,326 Financial liabilities - 49,958 78,350 624,779 461,353 580,451 1,208,089 507,775 Other noncurrent liabilities - 32,741 47,745 52,619 84,389 230,396 - 225,551 Equity 224,692 159,818 283,094 1,452,097 687,912 710,096 1,144,427 690,344 . STATEMENT OF INCOME Net operating income - 25,180 44,264 250,188 111,912 198,573 357,522 138,259 Operating costs and expenses (111) (5,481) (5,672) (70,886) (29,067) (30,560) (384,228) (5,360) Financial results 146 (4,557) (6,594) (59,794) (42,548) (54,154) (99,186) (46,190) Equity in income of subsidiaries (7,080) - - - - - - - Income tax and social contribution (5) (5,348) (8,904) (33,103) (2,926) (47,024) 42,627 (29,498) Net income (loss) (7,050) 9,794 23,094 86,405 37,371 66,835 (83,265) 57,211 Other comprehensive income - - - - - - - - Total comprehensive income (7,050) 9,794 23,094 86,405 37,371 66,835 (83,265) 57,211 Investment interest - % 49.0 49.0 49.0 49.0 49.0 24.5 50.1 49.0 Investment book value 110,099 78,312 138,716 711,527 337,077 173,973 573,357 338,268 Voltalia Caiuá Integração Maranhense Matrinchã Guaraciaba Paranaíba Mata de Santa Genebra Cantareira Balance as of December 31, 2018 ASSETS 227,867 261,951 465,801 2,199,434 1,295,670 1,574,846 2,365,160 1,443,693 Current assets 2,344 26,471 47,347 326,557 229,693 165,072 202,253 161,328 Cash and cash equivalents 205 1,128 1 116,634 136,191 13,931 19,568 301 Other current assets 2,139 25,343 47,346 209,923 93,502 151,141 182,685 161,027 Noncurrent assets 225,523 235,480 418,454 1,872,877 1,065,977 1,409,774 2,162,907 1,282,365 . LIABILITIES 227,867 261,951 465,801 2,199,434 1,295,670 1,574,846 2,365,160 1,443,693 Current liabilities 2,216 24,955 73,856 137,627 79,701 104,599 124,606 60,964 Financial liabilities - 7,615 13,228 70,192 27,950 55,968 33,964 46,329 Other current liabilities 2,216 17,340 60,628 67,435 51,751 48,631 90,642 14,635 Noncurrent liabilities - 84,672 127,284 687,897 487,520 814,798 1,273,962 734,724 Financial liabilities - 57,028 91,342 683,316 482,125 612,854 934,650 532,179 Other noncurrent liabilities - 27,644 35,942 4,581 5,395 201,944 339,312 202,545 Equity 225,651 152,324 264,661 1,373,910 728,449 655,449 966,592 648,005 . STATEMENT OF INCOME Net operating income - 25,129 42,379 272,103 181,665 (14,331) 514,591 195,441 Operating costs and expenses (103) (4,785) (7,732) (47,771) (27,273) (23,244) (462,839) (60,529) Financial results (170) (5,017) (7,817) (61,910) (35,036) (57,977) (59,507) (58,402) Equity in income of subsidiaries (7,815) - - - - - - - Income tax and social contribution - (5,053) (7,974) (59,544) (47,273) 28,163 2,685 (26,379) Net income (loss) (8,088) 10,274 18,856 102,878 72,083 (67,389) (5,070) 50,131 Other comprehensive income - - - - - - - - Total comprehensive income (8,088) 10,274 18,856 102,878 72,083 (67,389) (5,070) 50,131 Investment interest - % 49.0 49.0 49.0 49.0 49.0 24.5 50.1 49.0 Investment book value 110,568 74,639 129,684 673,216 356,941 160,584 484,262 317,523
Schedule of summarized information of key subsidiaries	16.4 Summarized information of the main associates Dona Francisca Foz do Chopim 12.31.2020 12.31.2019 12.31.2018 12.31.2020 12.31.2019 12.31.2018 ASSETS 128,798 130,883 134,141 62,635 61,635 106,736 Current assets 14,562 13,406 12,493 33,378 31,054 73,786 Noncurrent assets 114,236 117,477 121,648 29,257 30,581 32,950 . LIABILITIES 128,798 130,883 134,141 62,635 61,635 106,736 Current liabilities 4,452 4,344 4,231 34,723 2,354 57,603 Noncurrent liabilities 2,119 3,118 3,361 - 25,243 26,133 Equity 122,227 123,421 126,549 27,912 34,038 23,000 . STATEMENT OF INCOME Net operating income 70,314 70,717 70,716 55,740 56,929 46,479 Operating costs and expenses (26,171) (25,957) (25,268) (21,260) (16,278) (2,020) Financial income (expense) 208 475 366 (5,527) 621 (638) Income tax and social contribution (2,343) (2,454) (2,446) (2,035) (2,346) (6,880) Net income 42,008 42,781 43,368 26,918 38,926 36,941 Other comprehensive income - - - - - - Total comprehensive income 42,008 42,781 43,368 26,918 38,926 36,941 Investment interest - % 23.0303 23.0303 23.0303 35.77 35.77 35.77 Investment book value 28,147 28,423 29,144 9,986 12,175 8,227

17. Property, Plant and Equipme

17. Property, Plant and Equipment (Tables)	12 Months Ended
	Dec. 31, 2020
Property, plant and equipment [abstract]
Schedule of property plant and equipment	17.1 Property, plant and equipment by asset class Accumulated Accumulated Cost depreciation 12.31.2020 Cost depreciation 12.31.2019 In service Reservoirs, dams and aqueducts 8,081,989 (4,600,598) 3,481,391 8,082,238 (4,405,546) 3,676,692 Machinery and equipment 7,644,171 (2,619,939) 5,024,232 8,875,458 (2,871,568) 6,003,890 Buildings 1,968,591 (1,096,016) 872,575 1,962,033 (1,054,009) 908,024 Land 490,177 (38,269) 451,908 490,071 (27,651) 462,420 Vehicles and aircraft 44,617 (42,725) 1,892 47,960 (44,876) 3,084 Furniture and tools 22,314 (15,498) 6,816 22,415 (14,466) 7,949 (-) Impairment (17.5) (925,521) - (925,521) (961,177) - (961,177) (-) Impairment (17.6) (27,928) - (27,928) (81,322) - (81,322) (-) Special Obligations (332) 81 (251) (78) 35 (43) 17,298,078 (8,412,964) 8,885,114 18,437,598 (8,418,081) 10,019,517 In progress Cost 734,507 - 734,507 700,172 - 700,172 (-) Impairment (17.5) (120,308) - (120,308) (122,261) - (122,261) (-) Impairment (17.6) (3,853) - (3,853) (5,325) - (5,325) 610,346 - 610,346 572,586 - 572,586 17,908,424 (8,412,964) 9,495,460 19,010,184 (8,418,081) 10,592,103
Schedule of changes in property plant and equipment	17.2 Changes in property, plant and equipment Balance as of Additions / Loss on Balance as of January 1, 2020 Depreciation disposal Transfers December 31, 2020 In service Reservoirs, dams and aqueducts 3,676,692 - (195,062) - (239) 3,481,391 Machinery and equipment 6,003,890 - (431,088) (86,550) 160,968 5,647,220 Buildings 908,024 - (42,593) (83) 7,227 872,575 Land 462,420 - (10,617) (2) 107 451,908 Vehicles and aircraft 3,084 - (1,171) (123) 102 1,892 Furniture and tools 7,949 - (1,559) (238) 664 6,816 (-) Impairment (17.5) (961,177) 35,656 - - - (925,521) (-) Impairment (17.6) (81,322) 53,394 - - - (27,928) (-) Special Obligations (43) - 46 - (254) (251) (-) Reclassification (a) - - - - (622,988) (622,988) 10,019,517 89,050 (682,044) (86,996) (454,413) 8,885,114 In progress Cost 700,172 273,823 - (8,126) (170,053) 795,816 (-) Impairment (17.5) (122,261) 1,953 - - - (120,308) (-) Impairment (17.6) (5,325) 1,472 - - - (3,853) (-) Reclassification (a) - - - - (61,309) (61,309) 572,586 277,248 - (8,126) (231,362) 610,346 10,592,103 366,298 (682,044) (95,122) (685,775) 9,495,460 (a) Reclassification to Assets classified as held for sale (Note 40). Balance as of Additions / Loss on Balance as of January 1, 2019 Depreciation disposal Transfers December 31, 2019 In service Reservoirs, dams and aqueducts 2,426,474 - (188,334) (42) 1,438,594 3,676,692 Machinery and equipment 2,974,142 - (409,571) (141,902) 3,581,221 6,003,890 Buildings 479,207 - (52,330) - 481,147 908,024 Land 357,102 - (9,466) (463) 115,247 462,420 Vehicles and aircraft 5,766 - (3,482) (128) 928 3,084 Furniture and tools 9,415 - (2,007) (9) 550 7,949 (-) Impairment (3,489) 61,112 - - (1,100,122) (1,042,499) (-) Special Obligations (41) - 8 - (10) (43) 6,248,576 61,112 (665,182) (142,544) 4,517,555 10,019,517 In progress Cost 5,789,780 551,162 - (15,540) (5,625,230) 700,172 (-) Impairment (1,197,693) (30,015) - - 1,100,122 (127,586) 4,592,087 521,147 - (15,540) (4,525,108) 572,586 10,840,663 582,259 (665,182) (158,084) (7,553) 10,592,103
Schedule of joint operations property plant and equipment	The amounts recorded under property, plant and equipment referring to the share of interest of Copel GeT in consortiums are shown below: Joint operations Share Copel GeT (%) Annual average depreciation 12.31.2020 12.31.2019 HPP Gov. Jayme Canet Júnior (Mauá) - Consórcio Energético Cruzeiro do Sul 51.0 In service 859,917 859,917 (-) Accumulated depreciation 3.43 (235,454) (206,000) In progress 24,827 16,789 649,290 670,706 HPP Baixo Iguaçu 30.0 In service 691,833 692,593 (-) Accumulated depreciation 3.29 (41,803) (19,038) In progress 50,114 49,240 700,144 722,795 1,349,434 1,393,501
Schedule of impairment balances	The projects with impairment balances recorded at December 31, 2020 are the following: Property, Plant and Equipment Value in use Cost Depreciation Impairment HPP Colíder 2,477,374 (167,432) (683,193) 1,626,749 UEGA 701,736 (441,827) (138,777) 121,132 Consórcio Tapajós (a) 14,464 - (14,464) - Power plants in Paraná 984,823 (85,790) (209,395) 689,638 4,178,397 (695,049) (1,045,829) 2,437,519 (a) Project under development
Schedule of impairment of property plant and equipment	The table below shows the changes in the impairment for the years: Balance as of Impairment Transfer Balance as of Impairment Balance as of January 1, 2019 December 31, 2019 December 31, 2020 In service UHE Colíder - (45,547) (731,747) (777,294) 94,101 (683,193) Wind power complex Cutia - 114,144 (168,248) (54,104) 54,104 - Wind power complex Bento Miguel - 87,370 (87,370) - - - UEGA - - - - (138,777) (138,777) Power plants in Paraná (3,489) (13,534) (112,756) (129,779) 26,228 (103,551) (3,489) 142,433 (1,100,121) (961,177) 35,656 (925,521) In progress HPP Colíder (731,265) (482) 731,747 - - - Wind power complex Cutia (167,875) (373) 168,248 - - - Wind power complex Bento Miguel (84,621) (2,749) 87,370 - - - Consórcio Tapajós (14,464) - - (14,464) - (14,464) Power plants in Paraná (199,468) (21,085) 112,756 (107,797) 1,953 (105,844) (1,197,693) (24,689) 1,100,121 (122,261) 1,953 (120,308) (1,201,182) 117,744 - (1,083,438) 37,609 (1,045,829)
Schedule of impairment risk	In addition, the Company carried out a sensitivity analysis, increasing the discount rate shown below by 5% and 10% to assess the risk of impairment of each plant. Unidade geradora de caixa Discount VR/VC-1 VR/VC-1 Impairment Risk rate VR/VC-1 (5% Variation) (10% Variation) Wind power Assets São Bento Complex (a) 7.08% 56.04% 51.92% 47.97% - Brisa I Complex(b) 7.08% 46.29% 42.44% 38.76% - Brisa II Complex(c) 7.08% 50.09% 45.45% 41.03% - Bento Miguel Complex (d) 7.08% 5.79% 2.35% -0.91% 7,254 Hydric Assets Foz do Areia 5.70% 153.23% 152.06% 150.91% - Segredo 5.70% 189.54% 185.33% 181.21% - Caxias 5.70% 138.68% 134.97% 131.33% - Guaricana 5.70% 27.44% 26.28% 25.14% - Chaminé 5.70% 68.26% 66.71% 65.17% - Apucaraninha 5.70% 38.39% 37.10% 35.82% - Chopim I 5.70% 158.47% 152.77% 147.25% - Mauá 5.70% 88.81% 84.52% 80.38% - Cavernoso 5.70% 754.19% 740.28% 726.70% - Cavernoso II 5.70% 13.53% 10.72% 8.01% - Bela Vista 5.70% 44.01% 38.29% 32.89% - Elejor 5.00% 67.71% 65.01% 59.54% - (a) Contemplates the GE Boa Vista, GE Farol, GE Olho D’Água e GE São Bento do Norte wind farms. (b) Contemplates theNova Asa Branca I, Nova Asa Branca II, Nova Asa Branca III e Nova Eurus IV wind farms. (c) Contemplates theSanta Maria, Santa Helena e Ventos de Santo Uriel wind farms. (d) Contemplates São Bento do Norte I, São Bento do Norte II, São Bento do Norte III, São Miguel I, São Miguel II andGE São Miguel III wind farms.
Schedule of average depreciation rates	17.8 Depreciation rates Depreciation rates Depreciation rates (%) 12.31.2020 12.31.2019 12.31.2018 Average generation segment rates (Note 17.8.1) General equipment 6.26 6.33 6.25 Machinery and equipment 3.39 3.67 3.56 Generations 3.73 3.38 3.34 Reservoirs, dams and ducts 2.68 2.50 2.21 Hydraulic turbines 2.93 2.89 2.60 Gas and steam turbines 2.00 2.00 2.00 Water cooling and treatment 4.00 4.00 4.00 Gas conditioner 4.00 4.00 4.00 Wind power plant unit 4.94 5.49 3.71 Average rates for central government assets Buildings 3.35 3.35 3.35 Machinery and office equipment 6.25 6.25 6.25 Furniture and fixtures 6.25 6.25 6.25 Vehicles 14.29 14.29 14.29 Telecommunications segment rates Infrastructure backbone 3% to 5% 3% to 5% 3% to 5% Infrastructure last mile 17% and 25% 17% and 25% 3% to 17% Other infrastructure equipment 7% to 20% 7% to 20% 7% to 20%

18 Intangible Assets (Tables)

18 Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2020
Disclosure of detailed information about intangible assets [abstract]
Schedule of inangible assets	12.31.2020 12.31.2019 Concession agreement - distribution of electricity (18.1) 6,203,387 5,703,686 Generation concession agreements/ authorization (18.2) 553,840 582,671 Concession agreement - piped gas distribution (18.3) 132,366 - Others (18.4) 39,863 46,254 6,929,456 6,332,611
Schedule of changes in intangible assets	18.1 Power distribution service concession . Intangible asset Special liabilities in service in service Total Balance as of January 1, 2019 8,212,792 (2,822,729) 5,390,063 Incorporations (Note 10.1) 2,625 (2,550) 75 Transfers from contract assets (Note 11.1) 771,844 (93,164) 678,680 Transfers to investments (7) - (7) Transfers to other receivables (1,520) - (1,520) Amortization of quotas - concession (a) (461,370) 134,864 (326,506) Amortization of quotas - PIS/Pasep and Cofins credits (10,740) - (10,740) Loss on disposal (26,359) - (26,359) Balance as of December 31, 2019 8,487,265 (2,783,579) 5,703,686 Transfers from accounts receivable - concessions (Note 10.1) 99 - 99 Transfers from contract assets (Note 11.1) 1,016,482 (105,116) 911,366 Transfers to other receivables (1,372) - (1,372) Amortization of quotas - concession (a) (485,677) 138,596 (347,081) Amortization of quotas - PIS/Pasep and Cofins credits (10,655) - (10,655) Loss on disposal (52,656) - (52,656) Balance as of December 31, 2020 8,953,486 (2,750,099) 6,203,387 (a) Amortization during the concession as of the start of commercial operations of the enterprises or based on the useful life of the assets, of the two the shortest.
Schedule of generation concession agreements	18.2 Generation concession agreements . Concession contract (a) Concession and in service in progress authorization rights Total Balance as of January 1, 2019 226,411 - 367,441 593,852 Business combination effects - - 20,113 20,113 Amortization of quotas - concession and authorization (b) (16,944) - (14,350) (31,294) Balance as of December 31, 2019 209,467 - 373,204 582,671 ANEEL grant - use of public property - 3,682 - 3,682 Amortization of quotas - concession and authorization (b) (17,527) - (14,986) (32,513) Capitalizations for intangible in service 3,682 (3,682) - - Balance as of December 31, 2020 195,622 - 358,218 553,840 (a) Includes the balances of use of public asset and hydrological risk renegotiation (b) Amortization during the concession/authorization as of the start of commercial operations of the enterprises.
Schedule of piped gas distribution service concession	18.3 Piped gas distribution service concession . Total Balance as of January 1, 2019 3,619 Transfers from accounts receivable - concessions (Note 10.2) 24,835 Amortization of quotas - concession (28,454) Balance as of December 31, 2019 - Transfers from contract assets (Note 11.2) 7,277 Transfers from accounts receivable - concessions (Note 10.2) 154,483 Amortization of quotas - concession (29,243) Loss on disposal (151) Balance as of December 31, 2020 132,366
Schedule of other intangible assets	18.4 Other intangible assets . in service in progress Total Balance as of January 1, 2019 25,630 15,933 41,563 Acquisitions - 5,032 5,032 Transfers from property, plant and equipment (1,471) 10,217 8,746 Capitalizations for intangible in service 16,118 (16,118) - Amortization of quotas (a) (8,646) - (8,646) Amortization of quotas - PIS/Pasep and Cofins credits (11) - (11) Loss on disposal - (430) (430) Balance as of December 31, 2019 31,620 14,634 46,254 Acquisitions 128 10,863 10,991 Transfers from property, plant and equipment 229 2,932 3,161 Capitalizations for intangible in service 7,136 (7,136) - Amortization of quotas (a) (11,584) - (11,584) Amortization of quotas - PIS/Pasep and Cofins credits (13) - (13) Loss on disposal - (4) (4) (-) Reclassification (b) (8,307) (635) (8,942) Balance as of December 31, 2020 19,209 20,654 39,863 (a) Annual amortization rate: 20%. (b) Reclassification to Assets classified as held for sale (Note 40).

19 Payroll, Social Charges an_2

19 Payroll, Social Charges and Accruals (Tables)	12 Months Ended
	Dec. 31, 2020
Payroll Social Charges And Accruals [Abstract]
Schedule of payroll social charges and accruals	12.31.2020 12.31.2019 Social security liabilities Taxes and social contribution 42,748 47,022 Social security charges on paid vacation and 13th salary 29,742 29,182 72,490 76,204 Labor liabilities Payroll, net - 3,330 Vacation and 13th salary 100,175 98,648 Provisons by performance andprofit sharing 483,110 156,040 Voluntary retirement program 28,071 2,820 Other liabilities 200 2 611,556 260,840 684,046 337,044

20 Accounts payable to suppli_2

20 Accounts payable to suppliers (Tables)	12 Months Ended
	Dec. 31, 2020
Accounts Payable To Suppliers [Abstract]
Schedule of accounts payable to suppliers	12.31.2020 12.31.2019 Energy supplies 1,393,899 1,085,777 Materials and supplies 671,458 520,647 Natural gas for resale 38,574 79,174 Charges for use of grid system 332,521 187,595 2,436,452 1,873,193 Current 2,291,307 1,685,280 Noncurrent 145,145 187,913

21 Loans and Financing (Tables)

21 Loans and Financing (Tables)	12 Months Ended
	Dec. 31, 2020
Loans And Financing [Abstract]
Schedule of borrowings	Contractual Effective 12.31.2020 12.31.2019 Issue Number of Final Payment financial interest Contract Contracts Company Allocation Guarantees Date installment maturity of charges charges p.y. rate p.y. amount FOREIGN CURRENCY National Treasury Department (STN - Secretaria do Tesouro Nacional ) Par Bond Copel Debt negotiation Guarantees deposited(21.1). 05.20.1998 1 04.11.2024 Half-yearly 6.0% + 0.20% 6.0% + 0.20% 17,315 82,933 64,325 Discount Bond 05.20.1998 1 04.11.2024 Half-yearly 2.8125% + 0,20% 2.8125% + 0,20% 12,082 57,404 44,658 Total foreign currency 140,337 108,983 LOCAL CURRENCY Banco do Brasil CCB 306.401.381 (a) Copel HOL Working Capital Credit assigment 12.19.2019 5 03.25.2022 Quarterly 120.00% of DI 126.99% of DI 640,005 640,177 640,530 NCI 306.401.445 Copel HOL 02.24.2017 2 02.15.2020 Half-yearly 124.5% of DI 136.15% of DI 77,000 - 39,446 640,177 679,976 Eletrobras 983/95 National Program for Watering - Proni. Own revenue; issue of promissory notes and commercial duplicates. 12.22.1994 80 11.15.2020 Quarterly 8.0% 8.0% 11 - 26 984/95 12.22.1994 80 11.15.2020 Quarterly 8.0% 8.0% 14 - 11 985/95 12.22.1994 80 08.15.2021 Quarterly 8.0% 8.0% 61 - 11 206/07 Rural Electricity Program - Luz para Todos . 03.03.2008 120 08.30.2020 Monthly 5.0%+ 1.0% 5.05% 109,642 - 5,953 273/09 02.18.2010 120 12.30.2022 Monthly 5.0%+ 1.0% 5.0%+ 1.0% 63,944 - 4,933 - 10,934 Caixa Econômica Federal 415.855-22/14 Copel DIS Rural Electricity Program - Luz para Todos . Own revenue; issue of promissory notes and commercial duplicates. 03.31.2015 120 12.08.2026 Monthly 6.0% 6.0% 16,984 11,496 13,410 3153-352 Acquisition of machinery, equipment and IT and automation equipment. Assignment of trade notes receivable. 11.01.2016 36 12.15.2021 Monthly 5.5 % above TJLP 5.5 % above TJLP 1,156 165 331 11,661 13,741 Finep 21120105-00 Copel Tel BEL project - ultra wide band intranet service (Ultra Wide Band - UWB). Lock of proceeds received in current account. 07.17.2012 81 10.15.2020 Monthly 4.0% 4.39% - - 2,626 21120105-00 07.17.2012 81 10.15.2020 Monthly 3.5% + TR 3.88% + TR - - 2,219 - 4,845 Banco do Brasil - BNDES Transfer 21/02000-0 Copel GeT Implementation of Mauá HPP. Revenue from energy sales from the plant. 04.16.2009 179 01.15.2028 Monthly 2.13% above TJLP 2.13% above TJLP 169,500 83,936 95,807 83,936 95,807 (a) On March 25, 2021, the debt was renegotiated, with the final maturity date being changed to March 25, 2023 and the amount of financial charges to 135% of the DI p.y. Contractual Effective 12.31.2020 12.31.2019 Issue Number of Final Payment financial interest Contract Contracts Company Allocation Guarantees Date installment maturity of charges charges p.y. rate p.y. amount BNDES 820989.1 Copel GeT Implementation of Mauá HPP. Revenue from energy sales from the plant. 03.17.2009 179 01.15.2028 Monthly 1.63% above TJLP 1.63% above TJLP 169,500 83,935 95,807 1120952.1 Implementation of transmission line between Foz do Iguaçu and Cascavel Oeste substations. Assignment of receivables; revenue from energy transmission services. 12.16.2011 168 04.15.2026 Monthly 1.82% and 1.42% above TJLP 1.82% and 1.42% above TJLP 44,723 17,756 21,090 1220768.1 Implementation of Cavernoso II SHP. Revenue from energy sales from the plant. 09.28.2012 192 07.15.2029 Monthly 1.36% above TJLP 1.36% above TJLP 73,122 41,405 46,240 13211061 Implementation of Colíder HPP. Assignment of receivables 12.04.2013 192 10.15.2031 Monthly 0% and 1.49% above TJLP 6.43% and 7.68% 1,041,155 748,083 817,329 13210331 Implementation of Cerquilho III substation. 12.03.2013 168 08.15.2028 Monthly 1.49% and 1.89% above TJLP 1.49% and 1.89% above TJLP 17,644 10,069 11,385 15206041 Implementation of transmission line Assis - Paraguaçu Paulista II. 12.28.2015 168 06.15.2030 Monthly 2.42% above TJLP 9.04% 34,265 20,280 22,419 15205921 Implementation of transmission lines Londrina - Figueira and Salto Osório - Foz do Chopim. 12.28.2015 168 12.15.2029 Monthly 2.32% above TJLP 8.93% 21,584 12,171 13,526 18205101 Implementation of Baixo Iguaçu HPP. 11.22.2018 192 06.15.2035 Monthly 1.94% above TJLP 8.5% 194,000 184,087 196,827 19207901- A+B+E+F+G+H Implementation of transmission facilities for the line: substation Medianeira; substation Curitiba Centro and Curitiba Uberaba and substation Andirá Leste. 06.03.2020 279 12.15.2043 Monthly IPCA + 4.8165% IPCA + 4.8570% 206,882 158,351 - 19207901- C+D+I+J Implementation of transmission facilities for the line: transmission line Curitiba Leste - Blumenal and Baixo Iguaçu - Realeza. 06.03.2020 267 12.15.2043 Monthly IPCA + 4.8165% IPCA + 4.8570% 225,230 110,699 - 14205611-A Copel DIS Preservation of business, improvements, operating support and general investments in the expansion and consolidation of projects and social investment programs of companies (ISE). Surety of Copel; assignment of revenues and indemnity rights under the concession. 12.15.2014 72 01.15.2021 Monthly 2.09% above TJLP 8.37% 41,583 585 7,611 14205611-B 12.15.2014 6 02.15.2021 Annual 2.09 above TR BNDES 2.09 above TR BNDES 17,821 4,329 8,288 14205611-C 12.15.2014 113 06.15.2024 Monthly 6.0% 6.0% 78,921 27,434 35,267 14205611-D 12.15.2014 57 02.15.2021 Monthly TJLP TJLP 750 2 11 14.2.1271.1 Santa Maria Construction and implementation of wind generating plants. Surety of Copel; pledge of shares; assignment of receivables and revenues. 06.01.2015 192 08.15.2031 Monthly 1.66% above TJLP 8.26% 71,676 41,665 45,582 14.2.1272.1 Santa Helena 06.01.2015 192 08.15.2031 Monthly 1.66% above TJLP 8.26% 82,973 45,208 49,458 11211521 GE Farol Pledge of shares; assignment of receivables from energy sales from the project; assignment of machinery and equipment. 03.19.2012 192 06.15.2030 Monthly 2.34% above TJLP 2.34% above TJLP 54,100 37,470 41,388 11211531 GE Boa Vista 03.19.2012 192 06.15.2030 Monthly 2.34% above TJLP 2.34% above TJLP 40,050 27,701 30,598 11211541 GE S.B. do Norte 03.19.2012 192 06.15.2030 Monthly 2.34% above TJLP 2.34% above TJLP 90,900 62,824 69,394 11211551 GE Olho D'Água 03.19.2012 192 06.15.2030 Monthly 2.34% above TJLP 2.34% above TJLP 97,000 67,096 74,112 18204611 Cutia Pledge of shares; assignment of receivables. 10.25.2018 192 07.15.2035 Monthly 2.04% above TJLP 8.37% 619,405 588,169 611,457 13212221 - A Costa Oeste Implementation of transmission line between Cascavel Oeste and Umuarama Sul substations and implementation of Umuarama Sul substation. Assignment of receivables; 100% of pledged shares. 12.03.2013 168 11.30.2028 Monthly 1.95% + TJLP 1.95% + TJLP 27,634 17,046 19,203 13212221 - B 12.03.2013 106 09.30.2023 Monthly 3.5% 3.5% 9,086 2,194 2,992 14205851 - A Marumbi Implementation of transmission line between Curitiba and Curitiba Leste and implementation of Curitiba Leste substation. 07.08.2014 168 06.30.2029 Monthly 2.00% + TJLP 2.00% + TJLP 33,460 22,029 24,627 14205851 - B 07.08.2014 106 04.30.2024 Monthly 6.0% 6.0% 21,577 7,550 9,813 2,338,138 2,254,424 Total local currency 3,073,912 3,059,727 Gross debt 3,214,249 3,168,710 (-) Transaction cost (25,718) (26,327) Net debt 3,188,531 3,142,383 Current 717,677 255,521 Noncurrent 2,470,854 2,886,862
Schedule of borrowings by currency and index	21.2 Breakdown of loans and financing by currency and index 12.31.2020 % 12.31.2019 % Foreign currency - change in currencies in the period (%) U.S. Dollar 28.93 140,337 4.40 108,983 3.47 140,337 4.40 108,983 3.47 Local currency - indexes at period end (%) TJLP 4.55 2,090,340 65.58 2,271,187 72.30 CDI 1.90 638,431 20.02 676,720 21.54 TR 0.00 - - 2,202 0.07 IPCA 4.52 270,749 8.49 8,288 0.26 Without indexer (annual fixed rate) - 48,674 1.51 75,003 2.36 3,048,194 95.60 3,033,400 96.53 3,188,531 100.00 3,142,383 100.00
Schedule of maturity of noncurrent installments	21.3 Maturity of noncurrent installments 12.31.2020 Gross debt (-) Transaction cost Net debt 2022 328,538 (2,054) 326,484 2023 202,249 (1,732) 200,517 2024 337,272 (1,738) 335,534 2025 195,764 (1,735) 194,029 2026 195,846 (1,738) 194,108 After 2026 1,233,752 (13,570) 1,220,182 2,493,421 (22,567) 2,470,854
Schedule of changes in loans and financing	21.4 Changes in loans and financing Foreign currency Local currency Total Balance as of January 1, 2019 104,751 3,942,556 4,047,307 Funding - 796,296 796,296 Charges 5,599 268,950 274,549 Monetary and exchange variations 4,170 6,907 11,077 Amortization - principal - (1,660,869) (1,660,869) Payment - charges (5,537) (320,440) (325,977) Balance as of December 31, 2019 108,983 3,033,400 3,142,383 Funding - 263,000 263,000 Charges 6,928 176,337 183,265 Monetary and exchange variations 31,189 5,869 37,058 Amortization - principal - (253,700) (253,700) Payment - charges (6,763) (176,712) (183,475) Balance as of December 31, 2020 140,337 3,048,194 3,188,531 (a) Reclassification to Assets classified as held for sale (Note 40).
Schedule of financial covenants	The financial covenants contained in the agreements are presented below: Company Contract Annual financial index Limit Copel GeT BNDES Finem No. 820989.1 - Mauá EBITDA / Net financial results ≥ 1,3 Banco do Brasil No. 21/02000-0 - Mauá Copel DIS BNDES Finem No. 14205611 Financial indebtedness / adjusted EBITIDA ≤ 4,0 Santa Maria BNDES Finem No. 14212711 Debt service coverage ratio ≥ 1,3 Santa Helena BNDES Finem No. 14212721 São Bento Energia, Investimento e Participações BNDES Assignment Agreement Debt service coverage ratio ≥ 1,3 GE Boa Vista S.A. BNDES Finem No. 11211531 GE Farol S.A. BNDES Finem No. 11211521 GE Olho D´Água S.A. BNDES Finem No. 11211551 GE São Bento do Norte S.A. BNDES Finem No. 11211541 Cutia BNDES Finem No. 18204611 Debt service coverage ratio (a) ≥ 1,2 Costa Oeste BNDES Finem No. 13212221 Debt service coverage ratio ≥ 1,3 Marumbi BNDES Finem No. 14205851 Debt service coverage ratio ≥ 1,3 Financing for businesses - Finem (a) financial ratio calculated based on the amounts of the consolidated financial statements of Cutia Empreendimentos Eólicos S.A.

22 Debentures (Tables)

22 Debentures (Tables)	12 Months Ended
	Dec. 31, 2020
Debentures [Abstract]
Schedule of debentures	Contractual Effective 12.31.2020 12.31.2019 Issue Number of Final Payment financial interest Contract Company Issue Characteristics Allocation Guarantees Date installment maturity of charges charges p.y. rate p.y. amount Copel 7 th (a) Working capital or used to make investments in the issuer. Personal guarantee 01.19.2018 2 01.19.2021 Half-yearly 119.0% of DI 125.18% of DI 600,000 303,101 617,378 8 th Payment of the 6 th 06.14.2019 1 06.14.2022 Half-yearly 106.0% of DI 110.93% of DI 500,000 500,475 500,906 Copel GeT 1 st (a) Working capital or used to make investments in the issuer. Personal guarantee 05.15.2015 3 05.15.2020 Annual 113.0% of DI 114.29% of DI 1,000,000 - 346,906 3 rd 10.20.2017 3 10.20.2022 Half-yearly 126.0% ofDI 131.21% of DI 1,000,000 669,811 1,011,691 4 th Full early redemption of the 4 th st nd 07.23.2018 3 07.23.2023 Half-yearly 126.0% ofDI 133.77% of DI 1,000,000 1,010,625 1,030,054 5 th (b) Reimbursement of expenses related to the construction of the Transmission Lines Araraquara II - Taubaté, Assis - Londrina and Foz do Chopim. 09.25.2018 5 09.15.2025 Half-yearly IPCA + 7.6475% IPCA+ 8.3295% 290,000 322,110 308,464 6 th st (c) Full early redemption of the 5 th nd nd 07.15.2019 2 07.15.2024 Half-yearly 109.0% of DI 111.25% of DI 800,000 807,793 818,406 6 th nd Reimbursement of expenses related to the Colíder HPP and Baixo Iguaçu HPP projects 07.15.2019 1 07.15.2025 Half-yearly IPCA + 3.90% IPCA+ 4.46% 200,000 215,265 205,677 Copel DIS 3 rd (a) Working capital or used to make investments in the issuer. Personal guarantee 10.20.2017 2 10.20.2022 Half-yearly 126.0% of DI 130.85% of DI 500,000 502,358 505,846 4 th Working capital and payment of the 1 st nd 09.27.2018 3 09.27.2023 Half-yearly DI + spread 2.70% CDI + 3.96% 1,000,000 1,011,796 1,019,626 5 th st (c) Investment for expansion, renovation or improvement and reimbursement of expenses of the Issuer's electricity distribution network linked to concession contract No. 46/1999 of ANEEL. 11.15.2019 3 11.15.2027 Half-yearly IPCA + 4.20% IPCA+ 4.61% 500,000 529,349 506,180 5 th nd Reinforcement of working capital and recomposition of cash by the final amortization of the 2nd issue of debentures. 11.15.2019 2 11.15.2022 Half-yearly DI + spread 1.45% CDI + 1.65% 350,000 351,479 351,914 Copel CTE 1 st (a) Deployment, expansion and modernization of the telecommunication network. Personal guarantee 10.15.2015 5 10.15.2024 Half-yearly IPCA +7.9633% IPCA+ 8.1073% 160,000 - 195,429 2 nd 07.15.2017 1 07.15.2022 Half-yearly IPCA + 5.4329% IPCA+ 6.1036% 220,000 - 246,355 3 rd Investments in the issuer. 05.15.2019 3 05.15.2024 Half-yearly 117.0% of DI 119.58% of DI 210,000 - 211,348 Brisa Potiguar 2 nd st (d) Implementation of wind generating plants. Real and personal guarantee and pledge of Copel GeT shares. 03.24.2016 192 07.15.2032 Monthly TJLP + 2.02% TJLP + 2.02% 147,575 109,677 119,171 2 nd nd 03.24.2016 192 07.15.2032 Monthly IPCA + 9.87% IPCA+ 10.92% 153,258 130,449 135,657 Cutia 1 st (b) Construction and implementation of wind generating plants. Personal guarantee 03.20.2019 26 12.15.2031 Half-yearly IPCA +5.8813% IPCA+ 6.83% 360,000 353,166 352,829 Compagás 2 nd (e) Fund investment plan of the issuer. Floating 04.15.2016 54 12.15.2021 Quarterly TJLP + 2.17% TJLP + 2.17% 33,620 3,000 6,001 0 SELIC + 2.17% SELIC + 2.17% - 2,890 5,782 3 rd (f) Issuer's investment plan fund. Real 12.17.2019 18 06.28.2021 Monthly DI + spread 0.88 5.68% 43,000 14,475 44,746 Gross debt 6,837,819 8,540,366 (-) Transaction cost (80,338) (110,656) Net debt 6,757,481 8,429,710 Current 1,881,411 1,164,301 Noncurrent 4,876,070 7,265,409 (a) Simple debentures, single series, not convertible into shares, unsecured, for public distribution with restricted placement efforts, according to CVM No. 476. Guarantor: Copel. Trustee: Pentágono S.A. DTVM. (b) Simple debentures, single series, not convertible into shares, with security interest and additional personal guarantee, for public distribution with restricted efforts, pursuant to CVM Instruction No. 476. Guarantor: Copel. Trustee: Pentágono S.A. DTVM. (c) Simple debentures, two series, not convertible into shares, unsecured, for public distribution with restricted placement efforts, according to CVM No. 476. Guarantor: Copel. Trustee: Pentágono S.A. DTVM. (d) Simple debentures, two series, not convertible into shares, issued privately. Companies: Nova Asa Branca I, Nova Asa Branca II, Nova Asa Branca III, Nova Eurus e Ventos de Santo Uriel. Guarantor: Copel. They have no trustee. (e) Simple registered debentures, single series, with private issue and exclusive placement by BNDESPAR. Guarantor: Compagás. Trustee: BNDES Participações S.A. BNDESPAR. (f) Simple and registered debentures, with a single series, in private issue, with public distribution of restricted efforts. Guarantor: Compagás. Trustee: Simplific Pavarini DTVM Ltda.
Schedule of maturity of noncurrent installments	22.1 Maturity of noncurrent installments 12.31.2020 Gross debt (-) Transaction cost Net debt 2022 2,035,503 (18,969) 2,016,534 2023 1,173,340 (12,064) 1,161,276 2024 504,759 (6,982) 497,777 2025 499,422 (5,298) 494,124 2026 234,477 (3,756) 230,721 After 2026 488,057 (12,419) 475,638 4,935,558 (59,488) 4,876,070
Schedule of changes in debentures	22.2 Changes in debentures Total Balance as of January 1, 2019 7,518,131 Funding 2,965,028 Charges and monetary variations 623,795 Amortization - principal (1,977,125) Payment - charges (700,119) Balance as of December 31, 2019 8,429,710 Charges and monetary variations 453,951 Amortization - principal (1,046,295) Payment - charges (422,295) Reclassification (a) (657,590) Balance as of December 31, 2020 6,757,481 (a) Reclassification to Assets classified as held for sale (Note 40).
Schedule of financial covenants	The financial covenants contained in the agreements are presented as follows: Company Contract Annual financial index Limit Copel 7 th Consolidated net debt / Consolidated EBITDA ≤ 3,5 8 th Copel GeT 3 rd 4 th 5 th 6 th Copel DIS 3rd issue of Debentures 4th issue of Debentures 5 th Copel TEL 1 st 2 nd 3 rd Compagás 2 nd Net debt / EBTIDA ≤ 3,5 General Indebtedness ≤ 0,7 3rd issue of Debentures Net debt / EBTIDA ≤ 3,5 Nova Asa Branca I Debt service coverage ratio ≥ 1,3 Nova Asa Branca II Nova Asa Branca III 2 nd Nova Eurus IV Ventos de Santo Uriel Cutia 1 st Debt service coverage ratio (a) ≥ 1,2 (a) financial ratio calculated based on the amounts of the consolidated financial statements of Cutia Empreendimentos Eólicos S.A.

23 Post-Employment Benefits (Ta

23 Post-Employment Benefits (Tables)	12 Months Ended
	Dec. 31, 2020
Post-employment Benefits
Schedule of liabilities under post-employment benefits	Amounts recognized in liabilities, under Post-employment benefits, are summarized below: 12.31.2020 12.31.2019 Pension plans 1,124 1,537 Healthcare plans 1,492,490 1,193,399 1,493,614 1,194,936 Current 69,231 66,004 Noncurrent 1,424,383 1,128,932
Schedule of post-employment benefits recognized in the statement of income	Amounts recognized in the statement of income are shown below: 12.31.2020 12.31.2019 12.31.2018 Employees Pension plans 57,977 60,754 67,457 Healthcare plan - post employment 94,349 99,577 97,866 Healthcare plan - active employees 75,192 76,454 76,702 227,518 236,785 242,025 Management Pension plans 977 1,450 1,598 Healthcare plan 139 91 127 1,116 1,541 1,725 228,634 238,326 243,750
Schedule of changes in post-employment benefits	23.4 Changes in post-employment benefits Balance as of January 1, 2019 968,763 Appropriation of actuarial calculation 99,578 Appropriation of pension and healthcare contributions 138,974 Adjustment related to actuarial gains (loss) 186,628 Amortizations (199,007) Balance as of December 31, 2019 1,194,936 Appropriation of actuarial calculation 94,349 Appropriation of pension and healthcare contributions 130,129 Adjustment related to actuarial gains 271,343 Amortizations (197,143) Balance as of December 31, 2020 1,493,614
Schedule of actuarial assumptions	The actuarial assumptions used to determine the amounts of liabilities and costs for 2020 and 2019 are shown below: 2020 2019 Real Nominal Real Nominal Economic Inflation p.y. - 4.00% - 2.90% Expected rate of discount/return p.y. Unified Plan - Defined Benefit 2.85% 6.96% 3.05% 6.04% Unified Plan - Balance 3.20% 7.33% 3.20% 6.19% Plan III 3.40% 7.54% 3.20% 6.19% Assistance Plan 3.20% 7.33% 3.30% 6.30% Salary growth Unified Plan p.y. 0.00% 4.00% 1.00% 3.93% Plan III p.y. 1.00% 5.04% 1.00% 3.93% Demographic Mortality Table AT - 2000 AT - 2000 Mortality table of individuals with permanent disability WINKLEVOSS WINKLEVOSS Table of new disability benef it vested TASA 1927 TASA 1927
Schedule of participants and beneficiaries	23.5.2 Number of participants and beneficiaries Social Security Plans Unified Plan Plan III Assistance Plan 12.31.2020 12.31.2019 12.31.2020 12.31.2019 12.31.2020 12.31.2019 Number of active participants 22 27 7,401 7,647 6,546 6,963 Number of Inactive participants 4,274 4,337 4,633 4,324 9,032 8,433 Number of dependent people - - - - 21,716 22,183 Total 4,296 4,364 12,034 11,971 37,294 37,579
Schedule of life expectancy	23.5.3 Life expectancy after the average age of participants - Annuity Table AT-2000 (in years) Unified Plan Plan III As of 12.31.2020 Retired participants 12.38 23.16 Pensioner participants 14.07 24.98 As of 12.31.2019 Retired participants 13.13 25.84 Pensioner participants 8.40 25.84
Schedule of actuarial evaluation	For this reason, the Company did not record assets in its balance sheet as of December 31, 2020, reflecting any right to reduce contributions, refund of surplus or other amounts. Unified Plan Assistance 12.31.2020 12.31.2019 Total liabilities or partially covered 6,760,824 3,344,723 1,714,638 11,820,185 11,074,608 Fair value of the plan assets (7,568,268) (3,629,780) (222,148) (11,420,196) (10,880,721) Plan coverage status (807,444) (285,057) 1,492,490 399,989 193,887 Unrecognized asset 807,444 285,057 - 1,092,501 999,512 - - 1,492,490 1,492,490 1,193,399
Schedule of changes in actuarial liabilities	23.5.5 Changes in actuarial liabilities Unified Plan Plan III Assistance Plan Present value of net actuarial obligations as of January 1, 2018 5,352,894 1,734,568 1,035,957 Cost of services 589 9,604 11,633 Cost of interest 533,201 195,991 102,916 Benefits paid (414,256) (133,281) (7) Actuarial (gain) losses 442,336 338,779 (9,894) Present value of net actuarial obligations as of December 31, 2018 5,914,764 2,145,661 1,140,605 Cost of services 560 4,098 14,306 Cost of interest 477,732 128,075 106,004 Benefits paid (435,454) (174,427) (30) Actuarial (gain) losses 680,860 943,129 128,725 Present value of net actuarial obligations as of December 31, 2019 6,638,462 3,046,536 1,389,610 Cost of services 578 2,018 20,854 Cost of interest 405,371 183,866 85,561 Benefits paid (456,151) (203,342) (74) Actuarial (gain) losses 172,564 315,645 218,687 Present value of net actuarial obligations as of December 31, 2020 6,760,824 3,344,723 1,714,638
Schedule of changes in actuarial assets	23.5.6 Changes in actuarial assets Unified Plan Plan III Assistance Plan Fair value of the Plan's assets as of January 1, 2018 5,834,572 1,821,055 170,923 Return estimated for assets 593,572 230,703 16,579 Contributions and distributions 24,011 9,184 - Benefits paid (414,256) (133,281) - Actuarial gain (losses) 252,942 250,575 (14,511) Fair value of the Plan's assets as of December 31, 2018 6,290,841 2,178,236 172,991 Return estimated for assets 685,685 337,476 51,541 Contributions and distributions 23,851 4,185 - Benefits paid (435,454) (174,427) - Actuarial gain (losses) 981,833 792,284 (28,321) Fair value of the Plan's assets as of December 31, 2019 7,546,756 3,137,754 196,211 Return estimated for assets 607,252 224,591 16,474 Contributions and distributions 23,919 136,708 - Benefits paid (456,151) (203,341) - Actuarial gain (losses) (153,508) 334,068 9,463 Fair value of the Plan's assets as of December 31, 2020 7,568,268 3,629,780 222,148
Schedule of estimated net periodic plan costs (gains)	The estimated net periodic plan costs (gains) for 2021 for each plan are shown below: Unified Plan Plan III Assistance Plan Cost of current service 388 4,010 7,368 Estimated cost of interest 481,656 246,255 125,133 Expected return on plan assets (530,144) (245,291) (15,994) Expected employee contributions (136) (2,003) - Costs (income or loss) (48,236) 2,971 116,507
Schedule of sensitivity analysis	The following tables set out a sensitivity analysis, which shows the effect of a one percent increase or decrease in the assumed care costs, in the aggregate of the cost of service and cost of interest components and the accumulated post-employment benefit obligation. Projected scenarios Increase by 1% Decrease in 1% Sensitivity of long-term interest rate Impacts on the obligations of the pension (514,571) 521,397 Impacts on the obligations of healthcare program (130,084) 138,601 Sensitivity of growth rate of the medical costs Impacts on the obligations of healthcare program 116,165 (112,757) Impact on cost of service for the following financial year of healthcare program 492 (478) Sensitivity of the service cost Impacts on the obligations of the pension 29 (30) Impacts on the obligations of healthcare program 572 (586)
Schedule of benefits payable	The estimated benefits to be paid by the Company in the next five years and the total benefits for the following fiscal years are shown below: Unified Plan Plan III Assistance Plan Total 2021 589,819 179,251 89,842 858,912 2022 572,875 173,696 92,409 838,980 2023 555,705 167,961 91,572 815,238 2024 538,812 162,277 89,509 790,598 2025 522,208 156,810 87,372 766,390 2026 a 2050 5,119,047 2,119,296 1,010,411 8,248,754
Schedule of asset allocation for pension and healthcare plans	The asset allocation for the Company pension and healthcare plans at the end of 2020 and the allocation goal for 2021, by asset category, are shown below: Goal for 2021 (*) 2020 Fixed income 69.6% 70.4% Variable income 7.2% 9.1% Loans 1.6% 1.6% Real estate 5.8% 7.2% Investment structuring 10.5% 8.9% Investments abroad 5.3% 2.8% 100.0% 100.0% (*) Target based on the total investment of each plan.
Schedule of pension plan assets	In addition, information on the allocation of assets of pension plans sponsored by the Company: Unified Plan Plan III target (%)(*) minimum (%) target (%) minimum (%) Fixed income 86.5% 55.0% 51.0% 23.0% Variable income 5.0% 1.0% 14.0% 8.0% Loans 0.5% 0.0% 3.0% 1.0% Real estate 5.0% 1.0% 10.0% 0.0% Investment structuring 3.0% 0.0% 16.0% 0.0% Investments abroad 0.0% 0.0% 6.0% 0.0% (*) Target 2020.

24 Sectorial Charges Payable (T

24 Sectorial Charges Payable (Tables)	12 Months Ended
	Dec. 31, 2020
Sectorial Charges Due [Abstract]
Schedule of sectorial charges due	12.31.2020 12.31.2019 Energy Development Account - CDE 5,700 4,104 Global Reversal Reserve - RGR 12,446 12,068 Tariff flags 15,566 12,336 33,712 28,508

25 Research and Development a_2

25 Research and Development and Energy Efficiency (Tables)	12 Months Ended
	Dec. 31, 2020
Research And Development And Energy Efficiency [Abstract]
Schedule of investment in research and development and the energy efficiency program	25.1 Balances recognized for investment in Research and Development (R&D) activities and the Energy Efficiency Program (EEP) Amounts payable, before any related prepayments Amounts payable to regulatory agencies Other amounts payable Balance as of Balance as of 12.31.2020 12.31.2019 Research and Development - R&D FNDCT - 8,085 - 8,085 4,046 MME - 4,041 - 4,041 2,023 R&D 221,977 - 110,769 332,746 341,658 221,977 12,126 110,769 344,872 347,727 Energy efficiency program- EEP Procel - 5,855 - 5,855 16,410 EEP 36,756 - 277,528 314,284 294,034 36,756 5,855 277,528 320,139 310,444 258,733 17,981 388,297 665,011 658,171 Circulante 380,186 375,395 Não circulante 284,825 282,776
Schedule of changes in research and development and the energy efficiency program	25.2 Changes in R&D and EEP balances FNDCT MME R&D Procel EEP Total Balance as of January 1, 2019 4,725 2,361 327,626 15,792 242,231 592,735 Business combination effects 20 10 1,464 - - 1,494 Additions 32,311 16,155 32,312 9,333 37,321 127,432 Performance agreement - - - - 3,246 3,246 Interest rate (Note 33) - - 10,627 51 13,892 24,570 Transfers - - - (3,123) 3,123 - Payments (33,010) (16,503) - (5,643) 990 (54,166) Concluded projects - - (30,371) - (6,769) (37,140) Balance as of December 31, 2019 4,046 2,023 341,658 16,410 294,034 658,171 Additions 37,427 18,716 37,426 10,181 40,724 144,474 Performance agreement - - - - 3,545 3,545 Interest rate (Note 33) - - 4,253 1,469 6,828 12,550 Transfers - - - (616) 616 - Payments (33,388) (16,698) - (21,589) - (71,675) Concluded projects - - (50,591) - (31,463) (82,054) Balance as of December 31, 2020 8,085 4,041 332,746 5,855 314,284 665,011

26 Accounts Payable Related t_2

26 Accounts Payable Related to Concessions (Tables)	12 Months Ended
	Dec. 31, 2020
Accounts Payable Related To Concessions [Abstract]
Schedule of concession charges for use of public property	Discount Annual Company Grant Signature Closing rate Adjustment 12.31.2020 12.31.2019 HPP Mauá Copel GeT 06.29.2007 07.03.2007 07.2042 5.65% p.y. IPCA 17,213 16,890 HPP Colider Copel GeT 12.29.2010 01.17.2011 01.2046 7.74% p.y. IPCA 25,075 24,353 HPP Baixo Iguaçu Copel GeT 07.19.2012 08.20.2012 01.2047 7.74% p.y. IPCA 7,841 7,588 HPP Guaricana Copel GeT 03.03.2020 03.03.2020 03.2025 7.74% p.y. IPCA 3,299 - HPP Fundão e HPP Santa Clara Elejor 10.23.2001 10.25.2001 10.2036 11.00% p.y. IGPM 678,436 563,756 731,864 612,587 Current 88,951 73,032 Noncurrent 642,913 539,555
Schedule of changes in accounts payable related to concessions	26.1 Changes in accounts payable related to concessions Balance as of January 1, 2019 584,163 Adjust to present value (668) Monetary variations 99,661 Payments (70,569) Balance as of December 31, 2019 612,587 Additions 3,682 Adjust to present value (1,112) Monetary variations 191,638 Payments (74,931) Balance as of December 31, 2020 731,864
Schedule of nominal and present value of accounts payable related to concessions	26.2 Nominal value and present value of accounts payable related to concession Nominal value Present value 2021 87,432 88,951 2022 87,432 78,757 2023 87,432 71,101 2024 87,432 64,195 After 2024 1,155,565 428,860 1,505,293 731,864

27 Right-of-use asset and lea_2

27 Right-of-use asset and lease liability (Tables)	12 Months Ended
	Dec. 31, 2020
Equity interest investments
Schedule of right of use asset	27.1 Right-of-use asset Balance as of Additions Remeasurement adjustment Loss on Reclassi- Balance as of January 1, 2020 Amortization disposal fication (a) December 31, 2020 Real estate 40,155 5,319 75 (18,433) (2,551) (1,181) 23,384 Vehicles 46,400 79,455 1,331 (28,176) - (8,694) 90,316 Equipment 6,276 18,797 - (4,880) - (1,372) 18,821 92,831 103,571 1,406 (51,489) (2,551) (11,247) 132,521 (a) Reclassification to Assets classified as held for sale (Note 40). Initial adoption on Additions Remeasurement adjustment Loss on Balance as of January 1, 2019 Amortization disposal 31-Dec-19 Real estate 57,461 2,484 914 (17,705) (2,999) 40,155 Vehicles 57,564 2,295 2,970 (15,205) (1,224) 46,400 Equipment 2,997 4,574 - (1,295) - 6,276 118,022 9,353 3,884 (34,205) (4,223) 92,831
Schedule of changes in lease liability	27.2.1 Changes in lease liability Initial adoption on January 1, 2019 118,022 Additions 9,353 Remeasurement adjustment 3,884 Charges 9,675 Amortization - principal (30,946) Payment - charges (9,130) Baixas (4,254) Balance as of December 31, 2019 96,604 Additions 103,571 Remeasurement adjustment 1,406 Charges 10,528 Amortization - principal (51,761) Payment - charges (7,577) Write-offs (2,670) Reclassification (a) (11,740) Balance as of December 31, 2020 138,361 Current 41,193 Noncurrent 97,168 (a) Reclassification to Assets classified as held for sale (Note 40).
Schedule of maturity of noncurrent installments	27.2.2 Maturity of noncurrent installments 2022 41,948 2023 27,625 2024 19,656 2025 8,953 2026 51 After 2026 889 Undiscounted amounts 99,122 Embedded interest (1,954) Lease liabilities balance 97,168
Schedule of potential right to pis/cofins recoverable	The table below shows the potential right to Pis/Cofins recoverable for Pis/Cofins computed in lease consideration payable in the foreseen periods. Cash Flows Nominal value Present value Lease consideration 156,287 138,361 Potencial Pis/Cofins 12,498 11,333
Schedule of impact of forecast inflation on discounted cash flows	However, given the current reality of long-term interest rates in the Brazilian economic environment, the table below shows the comparative balances between the information recorded in accordance with IFRS 16 and the amount that would be recorded considering forecast inflation: Balance in accordance with IFRS 16 Inflation projected balance % Lease liabilities 138,361 155,015 12.04% Right to use assets 132,521 144,842 9.30% Financial expense 9,510 10,716 12.68% Amortization expense 45,090 48,883 8.41%
Schedule of commitments from leases and rentals	The balance of commitments from leases and rentals is shown below: Less than Over 1 year 1 to 5 years 5 years 12.31.2020 Commitments from leases and rents 7,328 31,843 164,149 203,320

28 Other Accounts Payable (Tabl

28 Other Accounts Payable (Tables)	12 Months Ended
	Dec. 31, 2020
Other Accounts Payable [Abstract]
Schedule of other accounts payables	12.31.2020 12.31.2019 Fair value in the purchase and sale of power (Note 35.2.12) 343,406 251,973 Generation deviation - wind projects (Note 35.2.11) 94,089 - Public lighting rate collected 48,188 38,805 Customers 44,508 43,024 Obligations to customers in gas sales operations (a) 29,508 39,665 Aneel Order No. 084/2017 provision 29,174 26,008 Pledges in guarantee 16,409 9,257 Investment acquisition 14,169 13,294 Financial offset for the use of water resources 9,799 12,535 Reimbursements to customer contributions 4,893 4,887 Derivatives fair value - forward contract (Note 35.2.3 - b) - 1,203 Other liabilities 71,143 58,218 705,286 498,869 Current 235,400 149,407 Noncurrent 469,886 349,462 (a) Refers to amounts paid for the purchase of contracted gas volumes not yet taken by customers.

29 Provisions for Legal Claim_2

29 Provisions for Legal Claims and Contingent Liabilities (Tables)	12 Months Ended
	Dec. 31, 2020
Provisions For Legal Claims And Contingent Liabilities [Abstract]
Schedule of changes in provisions for litigation	29.1 Change in provision for legal claims Income Provision Construction Transfers/ Balances as of Balances as of for litigations cost Additions Others December 31, January 1, 2020 Additions Reversals Additions (Rev.) to assets Discharges (a) 2020 Tax Cofins 104,284 2,864 - - - - - 107,148 Others 71,506 47,949 (49,381) - - (244) (3,105) 66,725 175,790 50,813 (49,381) - - (244) (3,105) 173,873 Labors 673,062 102,315 (4,297) - - (145,228) (29,604) 596,248 Employee benefits 86,297 11,439 (43,524) - - (783) (1,028) 52,401 Civil Civil and administrative claims 336,962 94,500 (20,581) - - (22,452) (534) 387,895 Easements 127,010 286 (543) (13,748) 667 (2,119) - 111,553 Expropriations and property 118,757 4,634 (1,217) 6,673 5,202 (161) - 133,888 Customers 4,956 299 (1,275) - - (7) - 3,973 Environmental 4,071 3,108 (5) - - - - 7,174 591,756 102,827 (23,621) (7,075) 5,869 (24,739) (534) 644,483 Regulatory 79,808 10,955 (1,033) - - (1,031) - 88,699 1,606,713 278,349 (121,856) (7,075) 5,869 (172,025) (34,271) 1,555,704 (a) Reclassification mainly to Liabilities associated with assets classified as held for sale (Note 40). Income Balances as of Provision for litigations Construction cost Additions Transfers/ Balances as of January 1, 2019 Additions Reversals Additions/(Rev.) to assets Discharges Others December 31, 2019 Tax Cofins 102,603 4,307 (2,626) - - - - 104,284 Others 54,494 4,841 (14,258) - - (1,258) 27,687 71,506 157,097 9,148 (16,884) - - (1,258) 27,687 175,790 Labors 612,782 194,550 (23) - - (134,247) - 673,062 Employee benefits 85,199 27,426 (18,747) - - (7,581) - 86,297 Civil Civil and administrative claims 492,934 101,438 (36,271) - - (221,139) - 336,962 Easements 118,147 711 (3,470) 12,456 1,012 (1,891) 45 127,010 Expropriations and property 116,401 2,844 (4,501) (2,935) 7,109 (161) - 118,757 Customers 5,209 390 (643) - - - - 4,956 Environmental 3,531 1,332 (566) - - (226) - 4,071 736,222 106,715 (45,451) 9,521 8,121 (223,417) 45 591,756 Regulatory 73,473 7,926 (546) - - (1,045) - 79,808 1,664,773 345,765 (81,651) 9,521 8,121 (367,548) 27,732 1,606,713
Schedule of details of provisions for legal claims and contingent liabilities	The table below shows the details of the provisions for registered litigation and, in addition, the amounts of contingent liabilities that are present obligations arising from past events for which no provisions are recognized because it is not probable that an outflow of resources embodying economic benefits will be required to settle the obligation. Provisions Contingent liabilities Extent Description 12.31.2020 12.31.2019 12.31.2020 12.31.2019 Tax Cofins Requirement of the Federal Revenue Service for the period from August 1995 to December 1996, due to the termination of a judicial decision that has recognized the Company's exemption from Cofins. 107,148 104,284 6,554 6,415 INSS Tax requirements related to the social security contribution. 29,405 30,744 100,165 117,018 Federal taxes Administrative requirements and questions from the Federal Revenue of Brazil. - - 84,027 105,800 ICMS Copel Distribution received tax deficiency notice 6.587.156-4 from the State of Paraná for allegedly failing to pay ICMS (VAT) tax on the 'metered demand' highlighted in the electricity bills issued to a major consumer between May 2011 and December 2013. - - 97,404 87,657 IPTU Tax Requirement on Urban Territorial Property on properties affected by the public electricity service. - - 98,459 87,006 ISS City halls tax requirement as ISS on construction services provided by third parties. - - 73,094 65,443 Others Taxes, fees and other federal, state and municipal taxes in which the Company discusses the levy or not, as well as its bases and amounts for payment 37,320 40,762 116,920 159,207 173,873 175,790 576,623 628,546 Labors Charging of overtime, hazardous work, transfer surcharge, equalization / salary adjustment, among others, by employees and former employees of Copel; collection of indemnity installments and others, by ex-employees of contractors and outsourced companies (subsidiary responsibility). 596,248 673,062 345,080 419,917 Employee benefits Labor claims filed by former retired employees against Fundação Copel, which will consequently cause repercussions for the Company and its wholly-owned subsidiaries, to the extent that additional contributions are required. 52,401 86,297 9,210 21,338 Regulatory Dispatch Aneel nº 288/2002 Legal actions against Aneel Dispatch No. 288/2002 involving the companies Companhia Estadual de Energia Elétrica - CEEE and Dona Francisca Energética S.A. 70,188 57,000 - - ESBR ESBR filed Ordinary Lawsuit No. 10426-71.2013.4.01.4100 against ANEEL in the Federal Court of Rondônia, whose ruling: (i) acknowledged the exclusion of liability for the 535-day schedule overrun in the construction of the Jirau Hydropower Station; (ii) declares any obligations, penalties and costs imposed on ESBR as a result of the schedule overrun to be unenforceable, and (iii) annuls ANEEL Resolution 1,732/2013, which had recognized a schedule overrun of only 52 days. An appeal has been brought by ANEEL, pending judgment by the Federal Court of the 1st Region. The practical consequence of the ruling was, at the time it exempted ESBR, to expose the distributors with whom it entered into power trading contracts (CCEARs) to the Short-Term Market and to the high value of the Settlement Price of the Differences (Preço de Liquidação das Diferenças - PLD, in Portuguese) in the period, including Copel DIS. This occurred because the rules for the sale of electricity require that all energy consumed should have a corresponding contractual coverage. If the lawsuits are judged unfavorably against Copel, the amount will be classified as Sectorial Financial - - 942,640 1,034,593 Colíder Discussion on the value of the Tariff for use of the transmission system - TUST and monetary adjustment on energy values ​​referring to the exclusion of liability period. - - 216,353 98,723 Others Aneel's notifications about possible breaches of regulatory standards 18,511 22,808 - 8,104 88,699 79,808 1,158,993 1,141,420 Provisions Contingent liabilities Extent Description 12.31.2020 12.31.2019 12.31.2020 12.31.2019 Civil Tobacco growers Actions whose main cause is the lack of electricity causing loss of production. 50,330 48,977 41,258 34,792 Department of Roads and Roadworks The Department of Roads and Roadworks (Departamento de Estradas e Rodagens - DER, in Portuguese) - issued a tax assessment notice to Copel Distribuição which, in turn, filed a lawsuit challenging DER's Charge for Use or Occupancy of Highway Domain Range, since the Company understands that this charge is unconstitutional because it has a confiscatory nature. - - 95,669 85,277 Arbitration Discussion by arbitration under secrecy and confidentiality, in the discovery phase, with no decision having been handed down to date. 125,719 119,579 510,543 485,607 PIS / COFINS credit on ICMS Referring to estimated contingent liability, as per Management’s judgment and the opinion of its legal counsel, regarding the adventitious filing of claims by consumers in connection with the recognized tax credit, as detailed in Note 13.2.1, referring to the period infringing the tax neutrality rule, between the 11th and the 16th years, of a total of 16 years considered in the action. On February 9, 2021, Aneel opened Public Consultation 005/2021 to obtain subsidies until March 29, 2020, in order to improve the proposal to return these tax credits to consumers. Aneel's technical areas prepared a technical note to the aforementioned Public Consultation, delimiting its scope for economic and financial analysis, but without discussing the legal aspects brought up in the scope of Grant 005/2020 and that permeate the theme. The Company and its legal advisors evaluated the documents made available at Public Consultation 005/2021 and are working on preparing their contributions in order to solidify their understanding and safeguard their rights. - - 1,755,112 - Civil and administrative law Other actions involving billing, supposed irregular procedures, administrative contracts and contractual fines, indemnity for accidents with the electric power network and accident with vehicles. 133,560 139,893 282,794 300,061 Indemnification to third parties (civil) Actions for indemnity for resulting from damages caused during the construction of power plants 82,146 28,513 38,127 26,104 Easements Discussion between the amount determined by Copel for payment and the amount claimed by the property owner and/or when when the owner's documentation supporting title to the property may not be registered (when probate proceedings are still in progress, properties have no registry number with the land registry, etc.), intervention in third-party adverse possession, either as a confronter, or in case of a property where there are areas of easement of passage, in order to preserve the limits and boundaries of expropriated areas. 110,652 127,010 26,001 24,635 Expropriations and property Discussion between the amount assessed by Copel for payment and the amount claimed by the owner, and / or when the owner's documentation does not present conditions for registration (inventories in progress, properties without registration, among others); actions for repossession of real estate owned by the concessionaire; intervention in the adverse possession of third parties, as a confrontant, in order to preserve the limits and confrontations of the expropriated areas. 86,207 80,079 138,341 120,760 Indemnification to third parties (expropriations) Expropriation lawsuit for construction of electric substation and expropriation of property flooded of power plant. 44,775 38,678 45,196 36,807 Consumers Lawsuits seeking compensation for damages caused in household appliances, industrial and commercial machines, lawsuits claiming damages for pain and suffering caused by service interruption and lawsuits filed by industrial consumers, challenging the lawfulness of the increase in electricity prices while Plano Cruzado (anti-inflation economic plan) was in effect and claiming reimbursement for the amounts paid by the Company. 3,920 4,956 3,768 - Environmental Public civil and class actions whose purpose is to obstruct the progress of environmental licensing for new projects or to recover permanent preservation areas located around the hydroelectric power plant dams unlawfully used by private individuals. If the outcome of the lawsuits is unfavorable to the Company, Management estimates only the cost to prepare new environmental studies and to recover the areas owned by Copel GeT. They also include the Commitment Agreements (Termos de Ajuste de Conduta - TAC, in Portuguese), which refer to the commitments agreed-upon and approved between the Company and the relevant bodies, for noncompliance with any condition provided for by the Installation and Operating Licenses. 7,174 4,071 180,068 159,885 644,483 591,756 3,116,877 1,273,928 1,555,704 1,606,713 5,206,783 3,485,149

30 Equity (Tables)

30 Equity (Tables)	12 Months Ended
	Dec. 31, 2020
EQUITY
Schedule ofclasses of shares and main shareholders	It includes shares (with no par value) and the main shareholders are presented below, already considering the adjusted number of shares after the split approved by Management: Number of shares in units Shareholders Common Class "A” Preferred Class “B” preferred Total in share % in share % in share % in share % State of Paraná 850,285,980 58.63 - - - - 850,285,980 31.07 BNDES 382,987,750 26.41 - - 272,820,060 21.26 655,807,810 23.96 Eletrobras 15,307,740 1.06 - - - - 15,307,740 0.56 Free float: B3 197,200,880 13.59 767,830 23.50 774,780,030 60.40 972,748,740 35.56 NYSE 1,163,450 0.08 - - 233,148,470 18.17 234,311,920 8.56 Latibex - - - - 1,721,110 0.13 1,721,110 0.06 City Halls 1,783,930 0.12 93,260 2.85 34,710 - 1,911,900 0.07 Other shareholders 1,581,070 0.11 2,406,430 73.65 471,050 0.04 4,458,550 0.16 1,450,310,800 100.00 3,267,520 100.00 1,282,975,430 100.00 2,736,553,750 100.00
Schedule ofchanges in equity Value adjustments	Adjustments arising from the changes in fair value involving financial assets, as well as actuarial gains and losses, are also recorded in this line item. Balance as of January 1, 2019 785,610 Actuarial liabilities Post employment benefits (186,628) Taxes on adjustments 63,444 Realization of equity evaluation adjustment Deemed cost of fixed assets (100,342) Taxes on adjustments 34,116 Attributed to non-controlling interest (4,273) Balance as of December 31, 2019 591,927 Adjusts to actuarial liabilities Post employment benefits (271,345) Taxes on adjustments 92,190 Realization of equity evaluation adjustment Deemed cost of fixed assets (90,347) Taxes on adjustments 30,717 Attributed to non-controlling interest 207 Balance as of December 31, 2020 353,349
Schedule of proposed dividend distribution	30.4 Proposed dividend distribution Parent Company Restated Restated 12.31.2020 12.31.2019 12.31.2018 Calculation of minimum mandatory dividend (25%) Net income for the year 3,904,202 1,989,946 1,407,063 Legal Reserve (5%) (195,210) (99,497) (70,353) Realization of equity evaluation adjustment 59,630 66,226 67,086 Calculation basis for minimum mandatory dividends 3,768,622 1,956,675 1,403,796 (1) Minimum mandatory dividend 942,156 489,169 350,949 (2) Interest on own capital - gross value 807,500 643,000 280,000 Tax on interest on own capital (76,401) (56,584) (27,593) (3) Interest on own capital, net 731,099 586,416 252,407 (4)Complement to reach the mandatory minimum 211,057 - 98,542 (5) Proposed additional dividend from non-capitalized earnings reserve (30.4.1) 1,507,449 - - (6) Total proposed distribution, net 2,435,463 586,416 350,949 (7) Total proposed distribution 2,526,006 643,000 378,542 Gross value of dividends per share: Ordinary shares 0.88128 0.22423 0.13195 Class “A” preferred shares 1.27172 0.39466 0.28905 Class “B” preferred shares 0.96941 0.24669 0.14515 Gross value of dividends per class of shares: Ordinary shares 1,278,126 325,210 191,369 Class “A” preferred shares 4,155 1,291 950 Class “B” preferred shares 1,243,725 316,499 186,223
Schedule of earnings per share - basic and diluted	30.5 Earnings per share – basic and diluted Parent Company Continuing Discontinued Continuing Discontinued Restated Continuing Discontinued Restated operations operations 12.31.2020 operations operations 12.31.2019 operations operations 12.31.2018 Basic and diluted numerator Basic and diluted earnings allocated by classes of shares, allocated to controlling shareholders: Common shares 1,935,144 40,607 1,975,751 1,051,809 (44,707) 1,007,102 662,546 49,688 712,234 Class “A” preferred shares 5,783 100 5,883 2,920 (111) 2,809 1,652 124 1,776 Class “B” preferred shares 1,883,054 39,514 1,922,568 1,023,538 (43,503) 980,035 644,703 48,350 693,053 3,823,981 80,221 3,904,202 2,078,267 (88,321) 1,989,946 1,308,901 98,162 1,407,063 Basic and diluted denominator Weighted average of shares (in thousands): Common shares 1,450,310,800 1,450,310,800 1,450,310,800 1,450,310,800 1,450,310,800 1,450,310,800 1,450,310,800 1,450,310,800 1,450,310,800 Class “A” preferred shares 3,268,067 3,268,067 3,268,067 3,273,682 3,273,682 3,273,682 3,286,270 3,286,270 3,286,270 Class “B” preferred shares 1,282,974,883 1,282,974,883 1,282,974,883 1,282,969,268 1,282,969,268 1,282,969,268 1,282,956,680 1,282,956,680 1,282,956,680 2,736,553,750 2,736,553,750 2,736,553,750 2,736,553,750 2,736,553,750 2,736,553,750 2,736,553,750 2,736,553,750 2,736,553,750 Basic and diluted earnings per share attributable to controlling shareholders Common shares 1.33430 0.02800 1.36229 0.72523 (0.03083) 0.69440 0.45683 0.03426 0.49109 Class “A” preferred shares 1.76982 0.03080 1.80062 0.89086 (0.03391) 0.85790 0.50251 0.03769 0.54020 Class “B” preferred shares 1.46773 0.03080 1.49852 0.79778 (0.03391) 0.76388 0.50251 0.03769 0.54020

31 Net Operating Revenue (Table

31 Net Operating Revenue (Tables)	12 Months Ended
	Dec. 31, 2020
Net Operating Revenue [Abstract]
Schedule of net operating revenue	Net revenues Gross PIS/Pasep Sectorial Service tax Restated Restated revenues and Cofins ICMS (VAT) charges (ISSQN) 12.31.2020 12.31.2019 12.31.2018 Electricity sales to final customers 9,524,897 (737,647) (1,960,998) (173,428) - 6,652,824 6,426,016 5,548,584 Electricity sales to distributors 4,330,982 (467,817) (21,637) (61,698) - 3,779,830 2,865,866 2,765,916 Use of the main distribution and transmission grid 8,780,612 (667,419) (2,118,380) (1,622,217) - 4,372,596 4,138,771 3,469,060 Construction income 1,414,067 - - - - 1,414,067 1,132,884 1,097,313 Fair value of assets from the indemnity for the concession 57,341 - - - - 57,341 36,646 47,499 Distribution of piped gas 679,304 (60,774) (115,640) - (235) 502,655 843,183 557,186 Sectorial financial assets and liabilities result 746,052 (69,113) - - - 676,939 18,631 893,688 Other operating revenue 406,539 (35,771) (65) - (4,269) 366,434 407,248 171,218 Recovery of Pis/Pasep and Cofins on ICMS - 810,563 - - - 810,563 - - 25,939,794 (1,227,978) (4,216,720) (1,857,343) (4,504) 18,633,249 15,869,245 14,550,464
Schedule of revenue by type and/or class of customers	31.1 Revenue by type and/or class of customers Restated Restated 12.31.2020 12.31.2019 12.31.2018 Electricity sales to final customers 9,524,897 10,481,794 10,104,045 Residential 3,098,969 3,336,432 3,175,290 Industrial 970,638 1,276,105 1,419,240 Trade, services and other activities 1,701,260 2,179,510 2,136,087 Rural 613,419 631,527 572,361 Public entities 195,259 279,495 262,705 Public lighting 233,558 274,250 278,645 Public service 290,482 332,414 316,307 Free consumers 1,729,603 1,431,274 1,179,314 Donations and grants 691,709 740,787 764,096 Electricity sales to distributors 4,330,982 3,301,336 3,136,244 Bilateral contracts 2,386,929 1,998,617 2,002,077 Regulated contracts 916,377 854,239 385,157 Electric Energy Trade Chamber - CCEE 933,369 357,076 663,024 Interest (Note 10.3) 94,307 91,404 85,986 Use of the main distribution and transmission grid 8,780,612 8,270,996 6,867,274 Residential 2,788,725 2,585,892 2,222,621 Industrial 1,273,320 1,280,168 1,110,089 Trade, services and other activities 1,628,098 1,713,632 1,407,156 Rural 548,682 467,044 362,778 Public entities 180,814 217,027 185,383 Public lighting 205,904 206,492 184,530 Public service 195,597 174,414 141,556 Free consumers 1,164,020 1,052,535 795,105 Concessionaires and generators 61,720 62,414 80,329 Operating and maintenance income - O&M and interest income 733,732 511,378 377,727 Construction income 1,414,067 1,132,884 1,097,313 Power distribution service concession 1,154,488 904,023 741,855 Power gas distribution service concession 7,438 12,153 13,478 Power transmission concession(a) 252,141 216,708 341,980 Fair value of assets from the indemnity for the concession 57,341 36,646 47,499 Distribution of piped gas 679,304 1,003,790 753,222 Sectorial financial assets and liabilities result 746,052 25,057 985,344 Other operating revenue 406,539 438,876 199,788 Leasing and rent (31.2) 176,452 141,315 130,007 Fair value in the purchase and sale of power in the active market 137,463 204,876 - Income from rendering of services 44,182 51,780 39,705 Other income 48,442 40,905 30,076 GROSS OPERATING REVENUE 25,939,794 24,691,379 23,190,729 (-) Pis/Pasep and Cofins (2,038,541) (2,243,383) (2,094,148) Recovery of Pis/Pasep and Cofins on ICMS (Note 13.2.1) 810,563 105,184 - (-) ICMS (VAT) (4,216,720) (4,518,791) (4,085,153) (-) Service tax (ISSQN) (4,504) (3,333) (3,402) (-) Regulatory charges (31.3) (1,857,343) (2,161,811) (2,457,562) NET OPERATING REVENUE 18,633,249 15,869,245 14,550,464 (a) The balance contains the amount of construction revenue, the construction margin and the efficiency gain or loss as detailed in Note 11.3
Schedule of revenues from leases and rentals	31.2.1 Revenue from leases and rentals Restated Restated 12.31.2020 12.31.2019 12.31.2018 Equipment and framework 175,673 140,053 128,734 Facilities sharing 415 1,046 1,003 Real estate 364 216 270 176,452 141,315 130,007
Schedule of receivables from non-cancelable leases	31.2.2 Receivables from leases Less than Over Total 1 year 1 to 5 years 5 years 12.31.2020 Facilities sharing 1,410 5,640 19,462 26,512
Schedule of regulatory charges	31.3 Regulatory charges 12.31.2020 12.31.2019 12.31.2018 Energy Development Account - "CDE " - Power distribution service concession (31.3.1) 1,530,998 1,654,157 1,840,283 Other charges - rate flags 81,159 280,286 423,098 Research and development and energy efficiency - R&D and EEP 144,474 127,432 123,306 Global Reversion Reserve - RGR quota 62,057 63,918 48,512 Energy Development Account - "CDE "- Power transmission concession 27,315 25,271 12,211 Inspection fee 11,340 10,747 10,152 1,857,343 2,161,811 2,457,562
Schedule of energy development account - CDE	The balance is as follows: Resolutions Period 12.31.2020 CDE USO Resolution No. 2,664/2019 January to December 1,531,713 (-) Preliminary injunctions January to December (715) 1,530,998 Resolutions Period 12.31.2019 CDE USO Resolution No. 2,510/2018 January to June 1,269,498 (-) Preliminary injunctions January to June (3,346) 1,266,152 CONTA ACR Resolution No.2,231/2017 January to February 98,725 Resolution No.2,521/2019 March to August 296,174 Return - Order No. 2,755 / 2019 (46,722) 348,177 CDE ENERGIA Resolution No. 2,510/2018 January to March 41,431 (-) Preliminary injunctions January to March (1,603) 39,828 1,654,157 Resolutions Period 12.31.2018 CDE USO Resolution No. 2,368/2018 January to August 594,972 Resolution No. 2,446/2018 September to December 445,075 (-) Preliminary injunctions January to December (2) 1,040,045 CONTA ACR Resolution No.2,231/2017 January to December 557,981 557,981 CDE ENERGIA Resolution No. 2,202/2017 January to May 100,692 Resolution No. 2,358/2017 June to December 145,007 (-) Preliminary injunctions January to December (3,442) 242,257 1,840,283

32 Operating Costs and Expens_2

32 Operating Costs and Expenses (Tables)	12 Months Ended
	Dec. 31, 2020
VR/VC-1
Schedule of operating costs and expenses	General and Other Operational Selling administrative operating costs expenses expenses expenses, net 12.31.2020 Electricity purchased for resale (32.1) (6,829,530) - - - (6,829,530) Charge of the main distribution and transmission grid (1,525,567) - - - (1,525,567) Personnel and management (32.2) (1,143,323) (12,567) (446,005) - (1,601,895) Pension and healthcare plans (Note 23.3) (161,257) (1,615) (65,762) - (228,634) Materials and supplies (65,357) (95) (7,228) - (72,680) Materials and supplies for power electricity (404,496) - - - (404,496) Natural gas and supplies for gas business (354,701) - - - (354,701) Third-party services (32.3) (406,109) (4,913) (147,019) - (558,041) Depreciation and amortization (945,595) - (48,963) (15,355) (1,009,913) Credit losses, provisions and reversals(32.4) 40,143 (128,466) - (148,971) (237,294) Construction cost (32.5) (1,417,504) - - - (1,417,504) Other operating costs and expenses, net (32.6) (134,526) (12,169) (94,431) (92,149) (333,275) (13,347,822) (159,825) (809,408) (256,475) (14,573,530) General and Other Operational Selling administrative operating Restated costs expenses expenses expenses, net 12.31.2019 Electricity purchased for resale (32.1) (6,105,274) - - - (6,105,274) Charge of the main distribution and transmission grid (1,249,275) - - - (1,249,275) Personnel and management (32.2) (945,312) (13,937) (366,133) - (1,325,382) Pension and healthcare plans (Note 23.3) (169,476) (1,914) (66,936) - (238,326) Materials and supplies (74,071) (253) (5,873) - (80,197) Materials and supplies for power electricity (49,352) - - - (49,352) Natural gas and supplies for gas business (585,233) - - - (585,233) Third-party services (32.3) (371,835) (7,711) (146,462) - (526,008) Depreciation and amortization (892,813) (3) (43,190) (14,720) (950,726) Credit losses, provisions and reversals(32.4) 120,689 (140,348) - (240,392) (260,051) Construction cost (32.5) (1,091,396) - - - (1,091,396) Other operating costs and expenses, net (32.6) (50,800) (11,606) (82,695) (67,394) (212,495) (11,464,148) (175,772) (711,289) (322,506) (12,673,715) General and Other Operational Selling administrative operating Restated costs expenses expenses expenses, net 12.31.2018 Electricity purchased for resale (32.1) (6,361,178) - - - (6,361,178) Charge of the main distribution and transmission grid (1,176,780) - - - (1,176,780) Personnel and management (32.2) (978,878) (18,460) (360,447) - (1,357,785) Pension and healthcare plans (Note 23.3) (176,102) (2,447) (65,201) - (243,750) Materials and supplies (67,494) (613) (11,887) - (79,994) Materials and supplies for power electricity (19,729) - - - (19,729) Natural gas and supplies for gas business (412,618) - - - (412,618) Third-party services (32.3) (325,091) (7,607) (148,403) - (481,101) Depreciation and amortization (657,445) (5) (25,268) (13,574) (696,292) Credit losses, provisions and reversals(32.4) 18,920 (69,187) - (230,837) (281,104) Construction cost (32.5) (1,052,208) - - - (1,052,208) Other operating costs and expenses, net (32.6) (164,305) (7,095) (95,638) (5,593) (272,631) (11,372,908) (105,414) (706,844) (250,004) (12,435,170)
Schedule of electricity purchased for resale	32.1 Electricity purchased for resale 12.31.2020 12.31.2019 12.31.2018 Purchase of Energy in the Regulated Environment - CCEAR 3,107,956 2,880,115 2,599,345 Itaipu Binacional 1,766,058 1,316,524 1,850,021 Electric Energy Trade Chamber - CCEE 1,176,798 1,405,497 1,272,177 Bilateral contracts 1,087,439 754,070 928,741 Program for incentive to alternative energy sources - Proinfa 221,406 268,063 228,295 Micro and mini generators and repurchase of customers 161,324 52,871 12,373 (-) PIS/Pasep/Cofins taxes on electricity purchased for resale (691,451) (571,866) (529,774) 6,829,530 6,105,274 6,361,178
Schedule of personnel and management	32.2 Personnel and management 12.31.2020 12.31.2019 12.31.2018 Personnel Salaries and management fees 696,837 746,415 794,966 Social charges on payroll 227,485 241,025 261,459 Meal and education allowance 107,052 113,021 113,177 Voluntary retirement program 66,905 43,517 69,289 1,098,279 1,143,978 1,238,891 Management Salaries and management fees 18,465 19,867 21,422 Social charges on payroll 3,233 5,745 5,695 Other expenses 237 248 251 21,935 25,860 27,368 Provisions for performance and profit sharing of employees and administrators 481,681 155,544 91,526 1,601,895 1,325,382 1,357,785
Schedule of third party services	32.3 Third party services Restated Restated 12.31.2020 12.31.2019 12.31.2018 Maintenance of electrical system 206,688 164,510 144,163 Maintenance of facilities 97,889 102,295 88,186 Consumer service 54,713 35,548 15,470 Meter reading and bill delivery 48,895 45,515 43,968 Communication, processing and transmission of data 42,244 51,919 47,954 Consulting and audit 41,043 20,456 40,694 Other services 66,569 105,765 100,666 558,041 526,008 481,101
Schedule of estimated losses provisions and reversals	32.4 Credit losses, provisions and reversals Restated Restated 12.31.2020 12.31.2019 12.31.2018 Provision for litigations (a) 150,269 243,848 206,792 Impairment of assets Power generation concession contract (Note 10.5) (10,502) (2,945) (4,758) Property, plant and equipment - generation segment (Note 17.5) (37,609) (117,744) (14,162) Expected credit losses (Trade accounts and Other receivables) 128,466 140,348 83,453 Tax credits estimated losses (1,298) (3,456) 9,779 Provision for losses on equity interests (Note 16.1) 7,968 - - 237,294 260,051 281,104
Schedule of construction cost	32.5 Construction costs 12.31.2020 12.31.2019 12.31.2018 Materials and supplies 781,807 548,336 507,899 Third party services 460,952 395,607 400,680 Personnel 140,108 125,777 124,469 Others 34,637 21,676 19,160 1,417,504 1,091,396 1,052,208
Schedule of other operating costs and expenses	32.6 Other operating costs and expenses, net Restated Restated 12.31.2020 12.31.2019 12.31.2018 Financial offset for the use of water resources 63,841 103,737 105,310 Collection charge 49,903 51,156 44,682 Net losses in the decommissioning and disposal of assets 44,020 38,151 70,640 Compensation 38,423 63,628 31,045 Taxes 37,847 28,651 78,323 Donations, contributions, grants, tax incentives (a) 22,136 12,829 12,314 Leasing and rent 9,705 8,536 34,226 Advertising and publicity Associação das Emissoras de Radiodifusão do Paraná - AERP 11,455 10,862 10,753 Publicity 9,598 7,206 6,127 Talento Olímpico Paranaense - TOP 4,750 4,719 4,537 Sponsorship 1,126 2,460 2,685 Other net income, costs and expenses (b) 40,471 (119,440) (128,011) 333,275 212,495 272,631 (a) The balance includes the Company's social investments in education, culture, health, sports, among others, including incentive donations used as a tax benefit. (b) The 2019 balance includes R$ 97,664 of water rate reversal (TCFRH).

33 Financial Results (Tables)

33 Financial Results (Tables)	12 Months Ended
	Dec. 31, 2020
Financial Result [Abstract]
Schedule of financial results	Restated Restated 12.31.2020 12.31.2019 12.31.2018 Financial income Recognition of tax credit (Note 13.2.1) 944,549 38,434 55,096 Interest and monetary variation of CRC transfer (Note 8.1) 341,964 192,724 214,627 Arrears charges on bills 271,966 215,522 210,466 Return on financial investments 80,704 119,622 98,424 Exchange variation on loan collateral 35,089 - - Derivatives fair value - forward contract (Note 35.2.3 - b) 24,511 - - Remuneration of net sectorial assets and liabilities (Note 9.2) 20,168 47,378 43,966 Monetary variation over the Itaipu power purchase 42,729 26,332 24,658 Monetary variation and adjust to present value of accounts payable related to the concession (Note 26.1) 2,322 1,462 1,047 Other financial income 75,666 88,032 148,823 1,839,668 729,506 797,107 ( - ) Financial expenses Monetary and exchange variation and debt charges 607,569 853,880 829,728 Monetary variation and adjust to present value of accounts payable related to the concession (Note 26.1) 192,848 100,455 94,319 Monetary variation over the Itaipu power purchase 75,478 29,547 50,203 Interest on R&D and EEP (Note 25.2) 12,550 24,570 25,407 Remuneration of net sectorial assets and liabilities (Note 9.2) 62 5,753 23,747 Interest and monetary variation of CRC transfer (Note 8.1) - 8,495 25,830 PIS/Pasep/Cofins taxes on interest on capital 27,748 71,549 13,636 Other financial expenses 57,142 90,621 147,382 973,397 1,184,870 1,210,252 Net 866,271 (455,364) (413,145)

34 Operating Segments (Tables)

34 Operating Segments (Tables)	12 Months Ended
	Dec. 31, 2020
Disclosure of operating segments [abstract]
Schedule of assets per reportable segment	34.3 Assets by reportable segment ASSETS Electric Energy TEL GAS HOL Reclassi- Intersegment operations Total 12.31.2020 GET DIS COM TOTAL ASSETS 20,945,910 20,407,088 1,053,099 1,565,593 749,434 4,733,847 (1,230,546) (1,439,761) 46,784,664 CURRENT ASSETS 3,137,219 6,198,414 390,695 666,654 245,028 2,543,995 (380,954) (1,393,620) 11,407,431 NON-CURRENT ASSETS 17,808,691 14,208,674 662,404 898,939 504,406 2,189,852 (849,592) (46,141) 35,377,233 Long term assets 5,561,545 7,915,662 660,229 136,527 358,719 2,007,064 (110,834) (438,633) 16,090,279 Investments 2,574,402 808 - - - 154,307 - - 2,729,517 Property, plant and equipment 9,420,859 - 224 734,172 - 24,500 (716,924) 32,629 9,495,460 Intangible assets 223,222 6,203,387 1,833 16,993 132,366 2,379 (10,587) 359,863 6,929,456 Right-of-use asset 28,663 88,817 118 11,247 13,321 1,602 (11,247) - 132,521 ASSETS Electric Energy TEL GAS HOL Intersegment operations Total 12.31.2019 GET DIS COM TOTAL ASSETS 19,457,551 13,434,522 690,372 1,527,098 904,993 3,183,677 (885,662) 38,312,550 CURRENT ASSETS 2,039,443 4,631,991 229,630 528,754 313,896 1,127,469 (961,987) 7,909,196 NON-CURRENT ASSETS 17,418,108 8,802,531 460,742 998,344 591,097 2,056,208 76,325 30,403,354 Long term assets 5,054,560 3,051,058 460,312 137,770 576,190 1,879,619 (296,879) 10,862,630 Investments 2,371,374 813 247 - - 150,746 - 2,523,179 Property, plant and equipment 9,735,093 - 53 833,974 - 22,983 - 10,592,103 Intangible assets 233,973 5,703,686 123 19,844 - 1,781 373,204 6,332,611 Right-of-use asset 23,108 46,974 7 6,756 14,907 1,079 - 92,831
Schedule of statement of income per reportable segment	34.4 Statement of income by reportable segment STATEMENT OF INCOME Electric Energy TEL GAS HOL Reclassi- Intersegment operations Total GET 12.31.2020 GER TRA DIS COM NET OPERATING REVENUES 4,030,979 1,186,215 12,363,459 2,420,657 386,634 535,206 - (355,843) (1,934,058) 18,633,249 Net operating revenues - third-parties 2,599,807 875,240 12,312,047 2,323,825 355,845 522,328 - (355,843) - 18,633,249 Net operating revenues - between segments 1,431,172 310,975 51,412 96,832 30,789 12,878 - - (1,934,058) - OPERATING COSTS AND EXPENSES (2,348,409) (536,968) (10,674,981) (2,262,053) (363,673) (452,495) (107,059) 203,779 1,968,329 (14,573,530) Energy purchased for resale (260,650) - (5,856,372) (2,239,388) - - - - 1,526,880 (6,829,530) Charges for use of the main transmission grid (489,921) - (1,370,814) - - - - - 335,168 (1,525,567) Personnel and management (277,905) (168,828) (994,037) (15,007) (82,817) (35,998) (27,303) - - (1,601,895) Pension and healthcare plans (38,196) (23,972) (146,422) (1,493) (11,207) (4,663) (2,681) - - (228,634) Materials and supplies (9,695) (3,466) (58,196) (28) (1,364) (580) (715) 1,364 - (72,680) Raw materials and supplies for generation (415,405) - - - - - - - 10,909 (404,496) Natural gas and supplies for gas business - - - - - (354,701) - - - (354,701) Third party services (118,562) (24,863) (405,854) (1,493) (66,426) (11,633) (32,025) 66,426 36,389 (558,041) Depreciation and amortization (583,958) (11,812) (374,851) (75) (147,190) (31,452) (2,345) 107,497 34,273 (1,009,913) Provision (reversal) for litigations (53,216) (24,529) (55,118) (62) 336 (85) (17,259) (336) - (150,269) Impairment of assets 48,111 - - - 54,945 - - (54,945) - 48,111 Other estimated losses, provisions and reversals (5,930) (4,149) (123,980) (839) (18,088) (238) - 18,088 - (135,136) Construction cost - (255,578) (1,154,488) - - (7,438) - - - (1,417,504) Other operating costs and expenses, net (143,082) (19,771) (134,849) (3,668) (91,862) (5,707) (24,731) 65,685 24,710 (333,275) EQUITY IN EARNINGS OF INVESTEES 9,629 176,848 - (93) - - 7,163 - - 193,547 PROFIT (LOSS) BEFORE FINANCIAL INCOME AND TAX 1,692,199 826,095 1,688,478 158,511 22,961 82,711 (99,896) (152,064) 34,271 4,253,266 Financial income 121,129 21,977 1,334,983 11,469 24,968 13,599 340,404 (24,939) (3,922) 1,839,668 Financial expenses (408,795) (97,417) (291,002) (96) (58,317) (14,363) (165,647) 58,317 3,923 (973,397) OPERATING PROFIT (LOSS) 1,404,533 750,655 2,732,459 169,884 (10,388) 81,947 74,861 (118,686) 34,272 5,119,537 Income tax and social contribution (337,564) (149,962) (878,278) (57,947) 2,357 (22,967) 125,293 43,108 (9,405) (1,285,365) NET INCOME(LOSS) FROM CONTINUING OPERATIONS 1,066,969 600,693 1,854,181 111,937 (8,031) 58,980 200,154 (75,578) 24,867 3,834,172 Result of discontinued operations - - - - - - - 75,578 - 75,578 NET INCOME (LOSS) 1,066,969 600,693 1,854,181 111,937 (8,031) 58,980 200,154 - 24,867 3,909,750 STATEMENT OF INCOME Electric Energy TEL GAS HOL Reclassi- Intersegment operations Total Restated GET 12.31.2019 GER TRA DIS COM NET OPERATING REVENUES 3,368,375 871,510 10,401,301 1,810,901 418,030 866,884 - (375,028) (1,492,727) 15,869,246 Net operating revenues - third-parties 2,233,367 643,596 10,352,690 1,773,765 375,030 865,826 - (375,028) - 15,869,246 Net operating revenues - between segments 1,135,008 227,914 48,611 37,136 43,000 1,058 - - (1,492,727) - OPERATING COSTS AND EXPENSES (1,659,225) (479,538) (9,579,915) (1,608,245) (604,616) (662,306) (59,232) 486,633 1,492,727 (12,673,717) Energy purchased for resale (262,288) - (5,424,207) (1,590,272) - - - - 1,171,493 (6,105,274) Charges for use of the main transmission grid (451,107) - (1,044,135) - - - - - 245,967 (1,249,275) Personnel and management (217,792) (139,662) (822,772) (13,041) (73,890) (36,932) (21,293) - - (1,325,382) Pension and healthcare plans (37,955) (25,027) (155,784) (1,481) (11,384) (4,122) (2,573) - - (238,326) Materials and supplies (10,987) (3,766) (64,419) (15) (1,955) (217) (793) 1,955 - (80,197) Raw materials and supplies for generation (50,388) - - - - - - - 1,036 (49,352) Natural gas and supplies for gas business - - - - - (585,233) - - - (585,233) Third party services (108,309) (38,092) (397,390) (1,718) (87,113) (12,971) (16,734) 87,113 49,206 (526,008) Depreciation and amortization (551,576) (12,987) (343,597) (44) (152,863) (30,480) (2,289) 143,108 - (950,728) Provision (reversal) for litigations (45,212) (24,398) (164,705) (156) (14,072) (292) (9,086) 14,072 - (243,849) Impairment of assets 117,648 - - - - - 3,041 - - 120,689 Other estimated losses, provisions and reversals 43,207 (41,350) (137,680) (4) (100,691) (1,063) (2) 100,691 - (136,892) Construction cost - (175,220) (904,023) - - (12,153) - - - (1,091,396) Other operating costs and expenses, net (84,466) (19,036) (121,203) (1,514) (162,648) 21,157 (9,503) 139,694 25,025 (212,494) EQUITY IN EARNINGS OF INVESTEES 14,840 85,752 - (280) - - 6,445 - - 106,757 PROFIT (LOSS) BEFORE FINANCIAL INCOME AND TAX 1,723,990 477,724 821,386 202,376 (186,586) 204,578 (52,787) 111,605 - 3,302,286 Financial income 80,632 20,637 355,152 3,004 20,760 53,625 217,057 (20,735) (626) 729,506 Financial expenses (457,528) (138,947) (273,909) (220) (53,857) (10,439) (304,453) 53,857 626 (1,184,870) OPERATING PROFIT (LOSS) 1,347,094 359,414 902,629 205,160 (219,683) 247,764 (140,183) 144,727 - 2,846,922 Income tax and social contribution (289,831) (54,695) (201,236) (69,854) 68,644 (74,791) (17,563) (36,334) - (675,660) NET INCOME(LOSS) FROM CONTINUING OPERATIONS 1,057,263 304,719 701,393 135,306 (151,039) 172,973 (157,746) 108,393 - 2,171,262 Result of discontinued operations - - - - - - - (108,393) - (108,393) NET INCOME (LOSS) 1,057,263 304,719 701,393 135,306 (151,039) 172,973 (157,746) - - 2,062,869 STATEMENT OF INCOME Electric Energy TEL GAS HOL Reclassi- Intersegment operations Total Restated GET 12.31.2018 GER TRA DIS COM NET OPERATING REVENUES 3,007,565 904,826 9,972,442 1,341,162 421,408 588,532 - (384,316) (1,301,155) 14,550,464 Net operating revenues - third-parties 2,116,875 680,567 9,932,267 1,341,162 364,741 582,895 - (384,316) (83,727) 14,550,464 Net operating revenues - between segments 890,690 224,259 40,175 - 56,667 5,637 - - (1,217,428) - OPERATING COSTS AND EXPENSES (1,619,431) (561,850) (9,474,473) (1,354,578) (369,201) (515,594) (57,993) 241,451 1,276,499 (12,435,170) Energy purchased for resale (417,918) - (5,577,719) (1,338,473) - - - - 972,932 (6,361,178) Charges for use of the main transmission grid (408,347) - (1,012,062) - - - - - 243,629 (1,176,780) Personnel and management (214,855) (147,139) (837,728) (13,734) (92,472) (34,896) (16,961) - - (1,357,785) Pension and healthcare plans (36,379) (25,884) (159,842) (1,507) (13,892) (3,881) (2,365) - - (243,750) Materials and supplies (11,637) (5,054) (60,379) (65) (1,763) (2,110) (749) 1,763 - (79,994) Raw materials and supplies for generation (25,367) - - - - - - - 5,638 (19,729) Natural gas and supplies for gas business - - - - - (412,618) - - - (412,618) Third party services (119,668) (33,489) (339,399) (1,700) (91,127) (17,034) (32,311) 91,127 62,500 (481,101) Depreciation and amortization (353,916) (11,386) (301,581) (16) (58,209) (22,759) (1,312) 52,887 - (696,292) Provision (reversal) for litigations 18,059 7,879 (222,057) 9 (12,844) (154) (10,528) 12,844 - (206,792) Impairment of assets 22,312 - - - - - 1,648 - (5,040) 18,920 Other estimated losses, provisions and reversals 55,457 (49,486) (77,985) (935) (12,749) (6,017) (14,266) 12,749 - (93,232) Construction cost - (277,259) (741,855) - - (13,478) - - (19,616) (1,052,208) Other operating costs and expenses, net (127,172) (20,032) (143,866) 1,843 (86,145) (2,647) 18,851 70,081 16,456 (272,631) EQUITY IN EARNINGS OF INVESTEES 5,514 123,676 - (15) - - 6,713 - - 135,888 PROFIT (LOSS) BEFORE FINANCIAL INCOME AND TAX 1,393,648 466,652 497,969 (13,431) 52,207 72,938 (51,280) (142,865) (24,656) 2,251,182 Financial income 119,196 29,163 335,377 6,065 16,808 29,454 305,344 (16,808) (27,492) 797,107 Financial expenses (517,832) (136,455) (308,319) (104) (41,713) (31,865) (243,169) 41,713 27,492 (1,210,252) OPERATING PROFIT (LOSS) 995,012 359,360 525,027 (7,470) 27,302 70,527 10,895 (117,960) (24,656) 1,838,037 Income tax and social contribution (327,598) (75,361) (148,244) 2,632 (2,853) (10,909) 41,957 40,827 8,383 (471,166) NET INCOME (LOSS) FROM CONTINUING OPERATIONS 667,414 283,999 376,783 (4,838) 24,449 59,618 52,852 (77,133) (16,273) 1,366,871 Result of discontinued operations - - - - - - - 77,133 - 77,133 NET INCOME (LOSS) 667,414 283,999 376,783 (4,838) 24,449 59,618 52,852 - (16,273) 1,444,004
Schedule of additions to noncurrent assets by reportable segment	34.5 Additions to noncurrent assets by reportable segment Electric Energy TEL GAS HOL Total 12.31.2020 GET DIS COM Contract assets - 1,278,578 - - 15,187 - 1,293,765 Property, plant and equipment 236,914 - 203 127,381 - 1,800 366,298 Intangible assets 7,397 - 1,741 808 - 1,045 10,991 Right-of-use asset 19,231 72,421 135 10,135 623 1,026 103,571 Electric Energy TEL GAS HOL Total 12.31.2019 GET DIS COM Contract assets - 917,577 - - 17,590 - 935,167 Property, plant and equipment 522,744 - 14 59,216 - 285 582,259 Intangible assets 4,272 - 3 486 - 271 5,032 Right-of-use asset 33,461 66,621 8 9,950 16,933 402 127,375 IFRS 16 Initial adoption 32,919 60,494 - 9,868 14,356 385 118,022 Additions for the period 542 6,127 8 82 2,577 17 9,353 Electric Energy TEL GAS HOL Total 12.31.2018 GET DIS COM Contract assets - 797,832 - - 15,618 - 813,450 Property, plant and equipment 1,160,967 - 4 308,242 - 267 1,469,480 Intangible assets 6,351 - - 1,235 - 3 7,589

35 Financial Instruments (Table

35 Financial Instruments (Tables)	12 Months Ended
	Dec. 31, 2020
Financial Instruments [Abstract]
Schedule of fair value of financial instruments	35.1 Categories and determination of fair value of financial instruments 12.31.2020 12.31.2019 Restated Note Level Book value Fair value Book value Fair value Financial assets Fair value through profit or loss Cash and cash equivalents (a) 5 1 3,222,768 3,222,768 2,941,727 2,941,727 Bonds and securities (b) 6 1 751 751 2,429 2,429 Bonds and securities (b) 6 2 299,779 299,779 279,652 279,652 Accounts receivable - distribution concession (c) 10.1 and 10.2 3 1,149,934 1,149,934 1,161,203 1,161,203 Accounts receivable - generation concession (d) 10.4 3 81,202 81,202 69,182 69,182 Derivatives fair value - forward contracts (e) 12 3 23,308 23,308 - - Fair value in the purchase and sale of power (e) 12 3 689,531 689,531 460,635 460,635 Other temporary investments (f) 1 14,910 14,910 15,566 15,566 Other temporary investments (f) 2 7,475 7,475 12,168 12,168 5,489,658 5,489,658 4,942,562 4,942,562 Amortized cost Collaterals and escrow accounts (a) 197 197 147 147 Collateral and escrow deposits - STN (g) 21.1 133,521 113,477 98,433 94,671 Trade accounts receivable (a) 7 3,819,680 3,819,680 3,182,567 3,182,567 CRC Transferred to the Paraná State Government (h) 8 1,392,624 1,496,016 1,350,685 1,488,456 Sectorial financial assets (a) 9 346,930 346,930 473,989 473,989 Accounts receivable - concessions - bonus from the grant (i) 10.3 671,204 763,070 647,984 738,483 6,364,156 6,539,370 5,753,805 5,978,313 Total financial assets 11,853,814 12,029,028 10,696,367 10,920,875 Financial liabilities Fair value through profit or loss Fair value in the purchase and sale of power (e) 28 3 343,406 343,406 251,973 251,973 Derivatives fair value - forward contracts (e) 28 3 - - 1,203 1,203 343,406 343,406 253,176 253,176 Amortized cost Sectorial financial liabilities (a) 9 188,709 188,709 102,284 102,284 Ordinary financing of taxes with the federal tax authorities (g) 13.2 - - 18,063 18,001 Special Tax Regularization Program - Pert (g) 13.2 459,303 377,375 497,207 439,519 PIS and Cofins to be refunded to consumers (a) 13.2.1 3,927,823 3,927,823 - - Accounts payable to suppliers (a) 20 2,436,452 2,436,452 1,873,193 1,873,193 Loans and financing (g) 21 3,214,249 2,956,696 3,168,710 3,110,104 Debentures (j) 22 6,837,819 6,837,819 8,540,366 8,540,366 Accounts payable related to concession (k) 26 731,864 811,329 612,587 690,326 17,796,219 17,536,203 14,812,410 14,773,793 Total financial liabilities 18,139,625 17,879,609 15,065,586 15,026,969
Schedule of credit risk	Credit risk is the risk of the Company incurring losses due to a customer or counterparty in a financial instrument, resulting from failure in complying with their contractual obligations. Exposure to credit risk 12.31.2020 12.31.2019 Cash and cash equivalents (a) 3,222,768 2,941,727 Bonds and securities (a) 300,530 282,081 Pledges and restricted deposits linked (a) 133,718 98,580 Trade accounts receivable (b) 3,819,680 3,182,567 CRC Transferred to the Paraná State Government (c) 1,392,624 1,350,685 Sectorial financial assets (d) 346,930 473,989 Accounts receivable - distribution concession (e) 1,149,934 1,161,203 Accounts receivable - concessions - Bonus from the grant (f) 671,204 647,984 Accounts receivable - generation concessions (g) 81,202 69,182 Other temporary investments (h) 22,385 27,734 11,140,975 10,235,732 a) The Company manages the credit risk of its assets in accordance with the Management’s policy of investing virtually all of its funds in federal banking institutions. As a result of legal and/or regulatory requirements, in exceptional circumstances the Company may invest funds in prime private banks. b) The risk arises from the possibility that the Company might incur losses resulting from difficulties to receive its billings to customers. This risk is directly related to internal and external factors to Copel. To mitigate this type of risk, the Company manages its accounts receivable, detecting the classes of consumers most likely to default, implementing specific collection policies and suspending the supply and/or recording of energy and the provision of service, as established in contract and regulatory standards. c) Management believes this credit risk is low because repayments are secured by resources from dividends. d) Management considers the risk of this credit to be reduced, since the agreements signed guarantee the unconditional right to receive cash at the end of the concession to be paid by the Concession Grantor, corresponding to the costs not recovered through the tariff. e) Management considers the risk of this credit to be reduced, since the agreements signed guarantee the unconditional right to receive cash at the end of the concession to be paid by the Concession Grantor, referring to investments in infrastructure not recovered through the tariff. f) Management considers the risk of such credit to be low, as the contract for the sale of energy by quotas guarantees the receipt of an Annual Generation Revenue - RAG, which includes the annual amortization of this amount during the concession term. g) For the generation concession assets, ANEEL published Normative Resolution 596/2013, which deals with the definition of criteria for calculating the New replacement value (Valor novo de reposição – VNR), for the purposes of indemnification. Management's expectation of indemnification for these assets supports recoverability of the balances recorded. h) This risk arises from the possibility that the Company might incur losses resulting from the volatility on the stock market. This type of risk involves external factors and has been managed through periodic assessment of the variations occurred in the market.
Schedule of liquidity risk	As from 2024, 2023 indicators are repeated on an unaltered basis throughout the forecast period. Less than 1 to 3 3 months 1 to 5 Over Interest (a) 1 month months to 1 year years 5 years Total 12.31.2020 Loans and financing Note 21 29,274 197,056 669,153 1,570,564 1,868,504 4,334,551 Debentures Note 22 335,121 47,686 1,723,107 4,953,679 1,020,581 8,080,174 Accounts payable related Rate of return + to concession IGP-M and IPCA 7,220 14,444 68,504 429,573 1,570,984 2,090,725 Accounts payable to suppliers - 2,034,872 309,329 26,248 66,003 - 2,436,452 PIS and Cofins to be refunded to consumers - - - 121,838 3,805,985 - 3,927,823 Special Tax Regularization Program - Pert Selic 4,220 8,456 38,426 225,206 270,982 547,290 Sectorial financial liabilities Selic 15,752 31,585 143,906 - - 191,243 2,426,459 608,556 2,791,182 11,051,010 4,731,051 21,608,258 (a) Effective interest rate - weighted average.
Schedule of sensitivity analysis of foreign currency risk	Additionally, the Company continues to monitor scenarios 1 and 2, which consider a deterioration of 25% and 50%, respectively, in the main risk factor of the financial instrument in relation to the level used in the probable scenario, as a result of extraordinary events that may affect the economic scenario. . Baseline Projected scenarios - Dec.2020 Foreign exchange risk Risk 12.31.2020 Probable Scenario 1 Scenario 2 . Financial assets Collaterals and escrow accounts - STN USD depreciation 133,521 (1,200) (34,280) (67,360) . 133,521 (1,200) (34,280) (67,360) Financial liabilities Loans and financing - STN USD appreciation (140,337) 1,261 (33,508) (68,277) Suppliers Eletrobras (Itaipu) USD appreciation (288,640) 2,594 (68,918) (140,429) Acquisition of gas USD appreciation (38,574) 347 (9,210) (18,767) (467,551) 4,202 (111,636) (227,473)
Schedule of gains (losses) on operations with derivative financial instruments	Additionally, the Company continues to monitor scenarios 1 and 2, which consider the 25% and 50% rise or fall in future quotes applied on the probable scenario, as a result of extraordinary events that may affect the economic scenario. Exchange Baseline Projected scenarios rate variation 12.31.2020 Probable Scenario 1 Scenario 2 Gains (losses) on operations with derivative financial instruments Increase 23,308 29,230 56,504 83,186 Decrease 23,308 29,230 3,140 (23,541)
Schedule of sensitivity analysis of interest rate and monetary variation risk	Additionally, the Company continues to monitor scenarios 1 and 2, which consider a deterioration of 25% and 50%, respectively, in the main risk factor of the financial instrument in relation to the level used in the probable scenario, as a result of extraordinary events that may affect the economic scenario. . Baseline Projected scenarios - Dec.2020 Interest rate risk and monetary variation Risk 12.31.2020 Probable Scenario 1 Scenario 2 Financial assets Bonds and securities Low CDI/SELIC 300,530 12,023 9,014 6,011 Collaterals and escrow accounts Low CDI/SELIC 197 8 6 4 CRC Transferred to the Paraná State Government Low IGP-DI 1,392,624 95,395 71,546 47,697 Sectorial financial assets Low Selic 346,930 13,877 10,408 6,939 Accounts receivable - concessions Low IPCA 1,821,138 72,481 54,361 36,241 Accounts receivable - generation concessions Undefined (a) 81,202 - - - 3,942,621 193,784 145,335 96,892 Financial liabilities Loans and financing Banco do Brasil High CDI (640,177) (25,607) (32,009) (38,411) BNDES High TJLP (2,027,581) (100,974) (126,217) (151,460) BNDES High IPCA (273,379) (10,880) (13,601) (16,321) Banco do Brasil - BNDES Transfer High TJLP (83,936) (4,180) (5,225) (6,270) Caixa Econômica Federal High TJLP (165) (8) (10) (12) Other No risk (48,674) - - - Debentures High CDI/SELIC (5,174,803) (206,992) (258,740) (310,488) Debentures High IPCA (1,550,339) (61,703) (77,129) (92,555) Debentures High TJLP (112,677) (5,611) (7,014) (8,417) Sectorial financial liabilities High Selic (188,709) (7,548) (9,435) (11,323) Special Tax Regularization Program - Pert High Selic (459,303) (18,372) (22,965) (27,558) Accounts payable related to concession High IGP-M (678,436) (60,924) (76,154) (91,385) Accounts payable related to concession High IPCA (53,428) (2,126) (2,658) (3,190) . (11,291,607) (504,925) (631,157) (757,390) (a) Risk assessment still requires ruling by the Granting Authority.
Schedule of indicators and penalties	Indicators and penalties Year Indicator Criteria Penalties Until 2020 Economic - financial efficiency and quality 2 consecutive years or at the Concession termination end of the 5-year period (2020) Quality Indicators 2 consecutive years or Limitation of dividend and interest on equity distribution 3 times in 5 years Economic - financial efficiency in the base year Capital Increase (a) Limitation of dividend and interest on equity distribution Restrictive regime for contracts with related parties From the 6 th Economic - financial efficiency 2 consecutive years Concession termination Quality Indicators 3 consecutive years (a) Within 180 days from the end of each fiscal year, in the totality of the insufficiency that occurs to reach the Minimum Economic and Financial Sustainability Parameter.
Schedule of targets set	Targets defined for Copel Distribuição in the first five years after extension of the concession agreement Quality - limits (a) Quality (Performed) Year Economic and Financial Management Realized DECi (b) FECi (b) DECi FECi 2016 13.61 9.24 10.80 7.14 2017 EBITDA ≥ 0 (c) 661,391 12.54 8.74 10.41 6.79 2018 EBITDA (-) QRR ≥ 0 (d) 550,675 11.23 8.24 10,29 6,20 2019 {Net Debt / [EBITDA (-) QRR]} ≤ 1 / (0.8 * SELIC) (e) 822,386 10.12 7.74 9,10 6,00 2020 {Net Debt / [EBITDA (-) QRR]} ≤ 1 / (1.11 * SELIC) (e) 9.83 7.24 7.81 5.55 (a) According to Aneel’s Technical Note No. 0335/2015. (b) DECi - Equivalent Time of Interruption Caused by Internal Source per Consumer Unit; and FECi - Equivalent Frequency of Interruption Caused by Internal Source per Consumer Unit. (c) Regulatory EBTIDA adjusted for non-recurring events (Voluntary retirement program, post-employment benefit, provisions and reversals) according to sub-clause six, of the Fifth Amendment to the Concession Agreement. (d) QRR: Regulatory Reintegration Quota or Regulatory Depreciation Expense. This is the value defined in the most recent Periodical Tariff Review (RTP), plus General Market Price Index (IGPM) variation between the month preceding the RTP and the month preceding the twelve-month period of the economic and financial sustainability measurement. (e) Selic: limited to 12.87% p.y.
Schedule of deadline for manifestation	The balances referring to these outstanding transactions as of December 31, 2020 are shown below. Assets Liabilities Net Current 51,359 (35,298) 16,061 Noncurrent 638,172 (308,108) 330,064 689,531 (343,406) 346,125
Schedule of sensitivity analysis on the power purchase and sale transactions in the active market	Additionally, the Company continues to monitor scenarios 1 and 2, which consider the 25% and 50% rise or fall applied to future prices considered in the probable scenario, as a result of extraordinary events that may affect the economic scenario. Price Baseline Projected scenarios variation 12.31.2020 Probable Scenario 1 Scenario 2 Unrealized gains (losses) on purchase and sale of energy Increase 346,125 332,741 356,496 380,117 Decrease 346,125 332,741 309,255 285,635
Schedule of capital monitored by index	As of December 31, 2020, the ratio attained is shown below: 12.31.2020 12.31.2019 Loans and financing 3,188,531 3,142,383 Debentures 6,757,481 8,429,710 (-) Cash and cash equivalents (3,222,768) (2,941,727) (-) Bonds and securities (current) (1,465) (3,112) (-) Bonds and securities (noncurrent) - debt contract guarantees (175,901) (121,617) (-) Collaterals and escrow accounts STN (133,521) (98,433) Adjusted net debt 6,412,357 8,407,204 Net income 3,834,172 2,062,869 Equity in earnings of investees (193,547) (106,757) Deferred IRPJ and CSLL 24,896 205,771 Provision for IRPJ and CSLL 1,260,469 433,555 Financial expenses (income), net (866,271) 488,486 Depreciation and amortization 1,009,913 1,093,836 Adjusted ebitda 5,069,632 4,177,760 Adjusted net debt/Adjusted ebitda 1.26 2.01
Schedule of debt to equity ratio	35.3.1 The debt to equity ratio is shown below: Indebtedness 12.31.2020 12.31.2019 Loans and financing 3,214,249 3,168,710 Debentures 6,837,819 8,540,366 (-) Cash and cash equivalents 3,222,768 2,941,727 (-) Bonds and securities 300,530 282,081 Net debt 6,528,770 8,485,268 Equity 20,250,518 17,598,212 Debit to equity ratio 0.32 0.48

36 Related Party Transactions (

36 Related Party Transactions (Tables)	12 Months Ended
	Dec. 31, 2020
Related party transactions [abstract]
Schedule of related party transactions	Assets Liabilities Revenue Cost / Expense Related parties / Nature of operation 12.31.2020 12.31.2019 12.31.2020 12.31.2019 12.31.2020 12.31.2019 12.31.2018 12.31.2020 12.31.2019 12.31.2018 Controlling shareholder State of Paraná - dividends payable - - 749,338 190,664 - - - - - - CRC Transfer (Note 8) 1,392,624 1,350,685 - - 341,964 184,229 188,797 - - - Luz Fraterna Program (a) 6,682 7,478 - - - - - - - - Tarifa Rural Noturna Program (a) 8,168 7,639 - - - - - - - - Morar Bem Paraná Program (a) 1,057 - - - - - - - - - Employees transferred (b) 87 33 - - - - - - - - Telecommunication services (c) 13,686 16,278 - - 43,248 43,011 41,375 - - - Meteorological System of Paraná - Simepar (c) (d) 2 10 855 705 48 58 54 (8,573) (7,087) (1,559) Entities with significant influence BNDES and BNDESPAR - dividends payable (e) - - 568,315 130,204 - - - - - - Financing (Note 21) - - 2,314,166 2,231,409 - - - (151,850) (175,461) (131,379) Debentures - Compagás (Note 22) - - 5,890 11,783 - - - (1,681) (1,194) (2,625) Debentures - wind farms (Note 22) (f) - - 239,249 253,877 - - - (25,891) (28,240) (30,316) State of Paraná investee Sanepar (c) (g) 223 294 582 311 4,956 4,710 4,200 (6,598) (5,852) (5,227) Use of water withdrawn from plants’ reservoirs - - - - 620 480 - - - - Joint ventures Voltalia São Miguel do Gostoso -mutual - - - - - - 294 - - - Dividends 1,032 1,032 - - - - - - - - Caiuá Transmissora de Energia(c) (h) (i) (j) 261 256 1,401 1,512 3,114 2,792 4,250 (16,267) (14,233) (14,869) Dividends 4,443 4,443 - - - - - - - - Integração Maranhense Transmissora (i) (j) - - 160 161 - - - (2,029) (1,938) (1,797) Dividends 3,806 4,306 - - - - - - - - Matrinchã Transmissora de Energia (i) (j) - - 959 829 - - - (11,259) (10,137) (9,514) Dividends 34,460 31,793 - - - - - - - - Guaraciaba Transmissora de Energia (i) (j) - - 436 383 - - - (5,348) (4,853) (4,475) Dividends 16,281 14,846 - - - - - - - - Paranaíba Transmissora de Energia (i) (j) - - 649 638 - - - (8,141) (6,514) (6,595) Dividends - 5,962 - - - - - - - - Cantareira Transmissora de Energia (i) (j) - - 468 467 - - - (5,912) (5,403) (1,618) Dividends 6,547 7,286 - - - - - - - - Mata de Santa Genebra Transmissão (i) (j) (k) 4,034 2,035 990 10 17,636 16,449 6,600 (7,636) (340) - Associates Dona Francisca Energética S.A. (l) 13 40 1,436 1,436 162 145 - (17,078) (16,905) (16,903) Dividends 97 - - - - - - - - - Foz do Chopim Energética Ltda. (c) (m) 216 209 - - 2,675 2,538 2,668 - - - Sercomtel S.A. Telecomunicações(n) - 4,436 - - 8,299 8,354 8,051 (4) (21) (4) Key management staff Fees and social security charges (Note 32.2) - - - - - - - (21,935) (25,860) (27,368) Pension and healthcare plans (Note 23.3) - - - - - - - (1,116) (1,560) (1,725) Other related parties Fundação Copel(c) 40 9 - - 315 285 299 - - - Administrative property rental - - 1,836 14,662 - - - (1,285) (2,520) (15,396) Pension and healthcare plans (Note 23.3) - - 1,493,614 1,194,936 - - - - - - Lactec (c) (o) 5 4 2,747 1,507 771 746 - (2,702) (2,787) (4,026) Tecpar (c) (p) 11 9 - - 862 81 68 - - - Celepar (c) (q) 4 15 2 21 51 112 8 (50) (5) - a) The Luz Fraterna In March 2018, the amount of R$ 159,274 was settled. The principal interest, fine and monetary restatement totaled R$ 158,849. For these charges on electricity bills for the period of September 2010 to June 2015, a lawsuit was filed against the State of Paraná on November 5, 2018, relating to the payment of invoices pursuant to State Law 14,087/2003. We highlight that despite the negotiations maintained by Management, seeking to settle this debt, uncertainties still exist regarding the realization of this asset and therefore, this asset was not recognized, therefore, in accordance with the current accounting standards. For the tax treatment, as determined by the Federal Revenue of Brazil in the Normative Instruction 1,753/2017, the Company has taxed this revenue. Management further emphasizes that it is making all necessary efforts and taking all necessary measures to preserve the Company's interests. The Tarifa Rural Noturna The Morar Bem Paraná Program was established by Decree 2,845/2011, and is an agreement between the State Government, the Companhia de Habitação do Paraná - Cohapar and Copel, which is managed by Cohapar. Copel's main assignment in this agreement is the construction of electricity distribution networks and service entrances for consumer units of housing estates. b) Reimbursement of wages and social charges for employees transferred to the Paraná State Government. Balances presented are net of expected credit loss. c) Revenue of Copel TEL from telecommunications services and lease of equipment and infrastructure. The balances presented are net of expected credit losses. d) The Sistema Meteorológico do Paraná - Simepar is a supplementary unit of the Independent Social Service Paraná Technology, linked to the State Department of Science, Technology and Higher Education. Simepar has contracts with Copel for services of weather forecast, meteorological reports, ampacity analysis, mapping and analyses of winds and atmospheric discharges. e) BNDES is the parent company of BNDES Participações S.A. - BNDESPAR, which owns Copel shares (Note 30.1). On December 22, 2018, the shareholder agreement between the State of Paraná and BNDESPAR, signed on December 22, 1998, was ended. f) BNDES and BNDESPAR acquired all the debentures issued by the subsidiaries Nova Asa Branca I, Nova Asa Branca II, Nova Asa Branca III, Nova Eurus IV and Ventos de Santo Uriel. g) Basic sanitation provided by Sanepar. h) Operation and maintenance services agreement provided by Copel GeT, maturing on May 9, 2021. Transmission System Connection Agreement - CCT executed by Copel DIS, expiring by the end of the concession agreement of the distribution or transmission company, whichever takes place first. i) Charges for use of the transmission system due by Copel GeT, UEG Araucária and wind farms. j) Copel DIS maintains a Contract for the Use of Transmission System (Cust) with ONS and power transmission concession operators whose subject matter is the contracting of Transmission System Use Amount (Must). Contracting is permanent and is regulated by ANEEL Normative Resolution 666/2015. Amounts are defined for four subsequent years, with annual reviews. k) Agreements entered by Copel GeT: for operation and maintenance services, maturing on February 1, 2023, rendering of owner's engineering services, advisory and consulting services, expired on November 2020, and facility sharing, maturing on January 1, 2043. l) Connection to the transmission system contracts entered by Copel GeT, Costa Oeste and Marumbi, maturing on August 17, 2031 until July 21, 2048. Power purchase and sale agreement made by Copel GeT, maturing on March 31, 2025. m) Contracts entered into by Copel GeT: for operation and maintenance, maturing on May 23, 2025, and connection to the transmission system, maturing on January 1, 2043. n) The balances include the amount of income and expense for telecommunications services, resulting from contracts between Sercomtel S.A. Telecomunicações and Copel TEL, as well as revenue from a pole-sharing contract between Sercomtel S.A. Telecomunicações and Copel DIS. In December 2020, Sercomtel was sold, as detailed in Note 1.1.3, and, since then, it is no longer a related party to the Company. o) The Institute of Technology for Development (Lactec) is a Public Interest Civil Society Organization (OSCIP), in which Copel is an associate. Lactec has service and R&D contracts with Copel GeT, UEGA and Copel DIS, which are subject to prior or later control and approval by ANEEL. Copel COM provides services and sells energy to the institute. p) Energy sale agreement signed between Copel COM and the Paraná Institute of Technology (Tecpar), a public company of the State Government that supports innovation and economic and social development in Paraná and Brazil. q) Service agreements entered into with the Paraná Information Technology Company (Celepar), a mixed capital company that is part of the indirect administration of the State Government.
Schedule of sureties and guarantees granted	Sureties and guarantees granted by Copel and Copel GeT for financing, debentures and insurance contracts of joint ventures are shown below: Date Final Amount Balance Interest Amount Company Operation issued maturity approved 12.31.2020 % guarantees (1) Caiuá Transmissora (a) Financing 12.23.2013 02.15.2029 84,600 50,256 49.0 5,956 (2) Guaraciaba Transmissora Financing 09.28.2016 01.15.2031 440,000 351,596 49.0 172,282 (3) Guaraciaba Transmissora Debentures 07.15.2018 12.15.2030 118,000 123,946 49.0 60,734 (4) Mata de Santa Genebra Financing 11.30.2017 07.15.2033 1,018,500 1,112,282 50.1 557,253 (5) Mata de Santa Genebra Debentures 04.15.2019 11.15.2030 210,000 208,014 50.1 104,215 (6) Cantareira Transmissora de Energia (a) Financing 12.28.2016 09.15.2032 426,834 431,366 49.0 28,175 (7) Cantareira Transmissora de Energia Debentures 01.09.2018 08.15.2032 100,000 99,732 49.0 48,869 977,484 (a) Guarantee awarded of fixed amount pursuant to the contractual provisions and formal requirements of the financial institution
Schedule of performance bonds	Performance bond Final Amount % endorsement Amount Company maturity Insured Copel GeT endorsement Matrinchã Transmissora 02.15.2029 90,000 49.0 44,100 Mata de Santa Genebra 02.28.2022 78,300 50.1 39,228 83,328

37 Commitments (Tables)

37 Commitments (Tables)	12 Months Ended
	Dec. 31, 2020
Commitments [Abstract]
Schedule of commitments related to long-term contracts	The main commitments related to long-term contracts not yet incurred, and therefore not recognized in the financial statements, are as follows: 12.31.2020 12.31.2019 Energy purchase and transportation contracts 132,879,053 137,279,155 Additions to property, plant and equipment Construction of transmission lines and substations 12,062 115,732 Construction of Jandaíra wind farm complex 330,257 - Construction of SHP Bela Vista 23,717 111,481 Telecommunications works 132,430 90,769 Acquisition of assets for electricity distribution 978,189 428,441 Gas purchase contracts 655,422 859,211

38 Insurance (Tables)

38 Insurance (Tables)	12 Months Ended
	Dec. 31, 2020
Provision for legal claims added to the cost of the works
Schedule of insurance policies	Details by peril type and effective date of the main insurance policies can be seen below: End Insured Policy of term amount Operational risks - HPP Baixo Iguaçu 05.30.2021 2,250,207 Operational risks - HPP Colíder 11.10.2021 2,166,984 Operational risks - Cutia and Bento Miguel 03.29.2022 2,016,287 Nominated Risks 08.24.2021 2,005,408 Operational risks - Brisa Potiguar 06.27.2021 914,610 Operational risks - UEG Araucária (a) 05.31.2021 882,035 Fire - owned and rented facilities 08.24.2021 800,636 Operational risks - HPP Governador Jayme Canet Junior 11.23.2021 799,290 Operational risks - Elejor 03.11.2022 763,007 Operational risks - São Bento 06.27.2021 571,848 (a)The values of the insured of operating risks - UEG Araucária have been translated from USD into BRL, with the current rate R$5.1967 as of December 31, 2020.

40 Assets held for sale and dis

40 Assets held for sale and discontinued operations (Tables)	12 Months Ended
	Dec. 31, 2020
Assets Held For Sale And Discontinued Operations Tables Abstract
Schedule of assets held for sale and discontinued operations	In compliance with the accounting standard, balances are measured at book values, since they are less than fair values fewer selling expenses. Assets classified as held for sale Cash and cash equivalents 277,119 Trade accounts receivable 60,543 Inventories 6,741 Current recoverable taxes and Deferred taxes 124,262 Escrow accounts 16,086 Property, plant and equipment 716,924 Intangible assets 10,587 Right-of-use asset 11,247 Other receivables 7,037 1,230,546 Liabilities associated with assets classified as held for sale Accounts payable to suppliers 16,916 Taxes due 35,426 Debentures 657,590 Lease liability 11,740 Provisions for legal claims 33,147 Other accounts payable 1,586 756,405
Schedule of statements of income from discontinued operations	The amounts from discontinued operations are presented in the following tables: Statements of Income from discontinued operations 12.31.2020 12.31.2019 12.31.2018 Net Operating Revenue 355,843 375,028 384,316 Operating Costs (100,684) (296,028) (128,780) Gross Profit 255,159 79,000 255,536 Selling expenses (31,244) (31,286) (43,295) General and administrative expenses (21,333) (23,010) (16,691) Other operational income (expenses) (50,518) (136,310) (52,686) (103,095) (190,606) (112,672) Profit (Loss) before financial results and taxes 152,064 (111,606) 142,864 Financial results (33,378) (33,122) (24,905) Operating Profit (Loss) 118,686 (144,728) 117,959 Income tax and social contribution (43,108) 36,335 (40,826) Net income (Loss) 75,578 (108,393) 77,133
Schedule of statements of cash flows from discontinued operations	Statements of Cash Flows from discontinued operations 12.31.2020 12.31.2019 12.31.2018 Net income 75,578 (108,393) 77,133 Adjustments to reconcile net income 282,914 419,093 209,218 Changes in assets and liabilities (16,958) (38,821) (11,478) Taxes and charges paid (73,050) (51,464) (83,488) Cash flows from operational activities 268,484 220,415 191,385 Additions to property, plant and equipment and intangible assets (73,573) (175,569) (280,542) Cash flows from investment activities (73,573) (175,569) (280,542) Issue of Debentures - 210,000 - Payment of loans and financing and lease (20,038) (9,260) (5,804) Cash flows from financing activities (20,038) 200,740 (5,804) Changes in cash and cash equivalents 174,873 245,586 (94,961)

42 Condensed individual finan_2

42 Condensed individual financial information of Companhia Paranaense de Energia - Copel (Tables)	12 Months Ended
	Dec. 31, 2020
Condensed Unconsolidated Financial Information Of Companhia Paranaense De Energia - Copel [Abstract]
Schedule of condensed statements of financial position	(a) Condensed statements of financial position as of December 31, 2020 and 2019 ASSETS 12.31.2020 12.31.2019 Current assets Cash and cash equivalents 42,700 25,304 Bonds and securities 90 90 Dividends receivables 1,290,114 760,719 CRC transferred to the State Government of Paraná 287,789 219,236 Other current receivables 1,025 1,068 Income tax and social contribution 12,171 5,876 Prepaid expenses 150 95 Receivable from related parties 40,298 6,039 1,674,337 1,018,427 Assets classified as held for sale 758,742 - 2,433,079 1,018,427 Noncurrent assets Other temporary investments 22,385 27,734 CRC transferred to the State Government of Paraná 1,104,835 1,131,449 Judicial deposits 125,738 124,219 Other current receivables 7,443 7,444 Income Tax and Social Contribution 117,682 123,951 Deferred tax assets 282,132 154,364 Other noncurrent recoverable taxes 88,331 87,597 Receivables from related parties 140,337 108,983 1,888,883 1,765,741 Investments 18,807,102 17,286,220 Property, Plant and Equipment, net 2,725 1,143 Intangible Assets 2,041 1,321 Right-of-use asset 962 271 20,701,713 19,054,696 Total assets 23,134,792 20,073,123 LIABILITIES 12.31.2020 12.31.2019 Current liabilities Payroll, social charges and accruals 16,759 8,437 Related parties 283,650 696 Suppliers 3,184 3,956 Income tax and social contribution - 1,811 Other taxes payable 952 120 Loans and financing 512,086 39,628 Debentures 301,972 315,008 Dividends payable 944,274 588,563 Post employment benefits 226 378 Lease liability 279 158 Other accounts payable 567 116 2,063,949 958,871 Noncurrent liabilities Related parties 5,851 145 Other taxes due 2,978 2,817 Loans and financing 266,682 746,075 Debentures 499,317 797,713 Post employment benefits 9,929 8,658 Lease liability 707 125 Other accounts payable 1,936 1,434 Provisions for legal claims 324,332 304,871 1,111,732 1,861,838 Equity Share capital 10,800,000 10,800,000 Equity valuation adjustments 353,349 591,927 Legal reserves 1,209,458 1,014,248 Retained earnings 6,088,855 4,846,239 Additional dividend from non-capitalized earnings reserve 1,507,449 - 19,959,111 17,252,414 Total liabilities and equity 23,134,792 20,073,123
Schedule of condensed statements of income	(b) Condensed statements of income for the years ended December 31, 2020, 2019 and 2018 Restated Restated 12.31.2020 12.31.2019 12.31.2018 Operating revenues (expenses) General and administrative expenses (79,762) (59,907) (67,292) Other revenues (expenses), net (24,423) 1,244 11,696 Result of equity in investees 3,551,254 2,177,629 1,258,213 3,447,069 2,118,966 1,202,617 Operating income before financial results 3,447,069 2,118,966 1,202,617 Financial income (expenses) Financial revenues 335,485 209,679 301,729 Financial expenses (86,076) (235,033) (238,355) 249,409 (25,354) 63,374 Operating income 3,696,478 2,093,612 1,265,991 Income tax and social contribution Income tax and social contribution - (21,195) (2,083) Deferred income tax and social contribution 127,503 5,850 44,993 127,503 (15,345) 42,910 Net income from continuing operations 3,823,981 2,078,267 1,308,901 Discontinued operations Net income (loss) from discontinued operations 80,221 (88,321) 98,162 Net income 3,904,202 1,989,946 1,407,063 Basic and diluted net earning per share attributed to controlling shareholders - continuing operations - expressed in Brazilian Reais Common shares 1.33430 0.72523 0.45683 Class A preferred shares 1.76982 0.89086 0.50251 Class B preferred shares 1.46773 0.79778 0.50251 Basic and diluted net earning per share attributed to controlling shareholders - expressed in Brazilian Reais Common shares 1.36229 0.69440 0.49109 Class A preferred shares 1.80062 0.85790 0.54020 Class B preferred shares 1.49852 0.76388 0.54020
Schedule of condensed statements of comprehensive income	(c) Condensed statement of comprehensive income for the years ended December 31, 2020, 2019 e 2018 12.31.2020 12.31.2019 12.31.2018 NET INCOME 3,904,202 1,989,946 1,407,063 Other comprehensive income Items that will never be reclassified to profit or loss Gain (losses) on actuarial liabilities Post employment benefits (779) (3,371) (408) Post employment benefits - equity (178,434) (120,358) (38,245) Taxes on other comprehensive income 265 1,146 139 Items that are or maybe reclassified to profit or loss Subsidiary loss with interest variation - (4,874) - Total comprehensive income, net of taxes (178,948) (127,457) (38,514) TOTAL COMPREHENSIVE INCOME 3,725,254 1,862,489 1,368,549
Schedule of condensed statements of cash flows	(d) Condensed statements of cash flows for the years ended December 31, 2020, 2019 and 2018 12.31.2020 12.31.2019 12.31.2018 Net cash generated from operating activities 761,050 688,443 653,230 Cash flow from investing activities Financial investments 5,349 115,376 (124,254) Loans and financing granted to related parties (40,000) (24,410) (192,445) Receipt of loans and financing granted to related parties 7,015 24,512 560,877 Additions in investments (68,127) (271,968) (608,934) Capital reduction of investees. 228 - 45,000 Additions to property, plant and equipment (1,800) (285) (267) Additions to intangible (1,045) (271) (3) Net cash used in investing activities (98,380) (157,046) (320,026) Cash flow from financing activities Issue of Debentures - 500,000 600,000 Issue of loans with related parties 280,000 48,000 - Amortization of principal - loans and financing (38,500) (115,500) (77,000) Amortization of principal - debentures (300,000) (853,400) (333,300) Amortization of loans obtained from related parties - (48,000) - Amortization of principal - Lease liabilities (329) (141) - Dividends and interest on capital paid (586,445) (352,055) (264,734) Net cash used in financing activities (645,274) (821,096) (75,034) Total effects on cash and cash equivalents 17,396 (289,699) 258,170 Cash and cash equivalents at the beginning of the period 25,304 315,003 56,833 Cash and cash equivalents at the end of the period 42,700 25,304 315,003 Change in cash and cash equivalents 17,396 (289,699) 258,170
Schedule of outstanding balances with related parties	· Related Parties 12.31.2020 12.31.2019 Assets Copel Distribuição (a) 140,337 108,983 UEG Araucária - mutual 33,572 - Investees and Subsidiaries - Structure sharing 6,726 6,039 180,635 115,022 Liabilities Copel CTE - mutual 282,817 - Investees and Subsidiaries - Structure sharing 833 696 Elejor advance 5,851 145 289,501 841 (a) Copel DIS - Financing transferred - STN
Schedule of investments in subsidiaries	Investments 12.31.2020 12.31.2019 Copel Geração e Transmissão 10,732,734 9,749,705 Copel Distribuição 7,212,915 6,012,246 Copel Telecomunicações 757,799 710,128 Copel TEL - Reclassification (a) (758,742) - Copel Energia 356,922 243,123 Compagas 252,481 284,747 UEG Araucária 48,355 64,094 Other investments 50,328 71,431 18,652,792 17,135,474 (a)Reclassification to Assets classified as held for sale.
Schedule of dividends receivable	· Dividends receivable 12.31.2020 12.31.2019 Investees and subsidiaries Copel Geração e Transmissão 769,108 464,450 Copel Distribuição 440,368 266,050 Copel Comercialização 29,803 88 Compagas 43,164 22,531 UEG Araucária 6,143 6,143 Joint Ventures and Associates Voltália 1,032 1,032 Dona Francisca 97 - Other investments 399 425 1,290,114 760,719
Schedule of provisions for risks	· Provisions for Legal Claims 12.31.2020 12.31.2019 Regulatory 21,373 17,357 Labor 2,466 1,957 Civil 163,940 150,529 Tax Claim 136,553 135,028 324,332 304,871
Schedule of restricted subsidiaries net assets	As of December 31, 2020, total restricted subsidiaries net assets amount to R$ 18,197,350 composed as follows: 12.31.2020 12.31.2019 Copel Geração e Transmissão S.A. 10,732,735 9,749,705 Copel Distribuição S.A. 7,212,914 6,012,244 UEG Araucária Ltda. 238,211 315,740 Centrais Elétricas Rio Jordão - Elejor 13,490 42,859 18,197,350 16,120,548
Schedule of expected undiscounted settlement values of the liabilities	The following table shows the expected undiscounted settlement values ​​of the Copel liabilities, in each time range: Interest (a) Less than 1 to 3 months 3 months to 1 year 1 to 5 years Over Total 12.31.2020 Loans and financing Note 21 - 131,547 400,876 279,030 - 811,453 Debentures Note 22 303,640 - 15,199 511,799 - 830,638 Suppliers - 3,183 1 - - - 3,184 306,823 131,548 416,075 790,829 - 1,645,275 (a) Effective interest rate - weighted average.

1 Operations (Details)

1 Operations (Details)	12 Months Ended
	Dec. 31, 2020
Copel geracao e transmissao s.a. [member]
Disclosure of subsidiaries [line items]
Subsidiary name	Copel Geração e Transmissão S.A. (Copel GeT)
Headquarters	Curitiba/PR
Main activity	Production and transmission of electricity
Interest	100.00%
Investor	Copel
Copel Distribuicao S.A. [member]
Disclosure of subsidiaries [line items]
Subsidiary name	Copel Distribuição S.A. (Copel DIS)
Headquarters	Curitiba/PR
Main activity	Distribution and marketing of electricity
Interest	100.00%
Investor	Copel
Copel Telecomunicacoes S.A. [member]
Disclosure of subsidiaries [line items]
Subsidiary name	Copel Telecomunicações S.A. (Copel TEL) (Note 40)
Headquarters	Curitiba/PR
Main activity	Telecommunication and communication
Interest	100.00%
Investor	Copel
Copel Servicos S.A. (Copel SER) [member]
Disclosure of subsidiaries [line items]
Subsidiary name	Copel Serviços S.A. (Copel SER)	[1]
Headquarters	Curitiba/PR	[1]
Main activity	Production of electricity	[1]
Interest	100.00%	[1]
Investor	Copel	[1]
Copel Comercializacao S.A. [member]
Disclosure of subsidiaries [line items]
Subsidiary name	Copel Comercialização S.A. (Copel COM)
Headquarters	Curitiba/PR
Main activity	Commercialization of electricity
Interest	100.00%
Investor	Copel
Companhia Paranaense de Gas - Compagas [member]
Disclosure of subsidiaries [line items]
Subsidiary name	Companhia Paranaense de Gás - Compagás
Headquarters	Curitiba/PR
Main activity	Distribution of pipeline gas
Interest	51.00%
Investor	Copel
Elejor - Centrais Eletricas do Rio Jordao S.A. [member]
Disclosure of subsidiaries [line items]
Subsidiary name	Elejor - Centrais Elétricas do Rio Jordão S.A.
Headquarters	Curitiba/PR
Main activity	Production of electricity
Interest	70.00%
Investor	Copel
UEG Araucaria Ltda. [member]
Disclosure of subsidiaries [line items]
Subsidiary name	UEG Araucária Ltda. (UEGA)
Headquarters	Curitiba/PR
Main activity	Production of electricity from natural gas
Interest	20.30%
Investor	Copel
UEG Araucaria Ltda. [member]
Disclosure of subsidiaries [line items]
Subsidiary name	UEG Araucária Ltda. (UEG)
Headquarters	Curitiba/PR
Main activity	Production of electricity from natural gas
Interest	60.90%
Investor	Copel GeT
Sao Bento Energia, Investimentos e Participacoes S.A. [member]
Disclosure of subsidiaries [line items]
Subsidiary name	São Bento Energia, Investimentos e Participações S.A. (São Bento)
Headquarters	Curitiba/PR
Main activity	Control and management of interests
Interest	100.00%
Investor	Copel GeT
Nova Asa Branca I Energias Renovaveis S.A. [member]
Disclosure of subsidiaries [line items]
Subsidiary name	Nova Asa Branca I Energias Renováveis S.A.
Headquarters	S. Miguel do Gostoso/RN
Main activity	Production of electricity from wind sources
Interest	100.00%
Investor	Copel GeT
Nova Asa Branca II Energias Renovaveis S.A. [member]
Disclosure of subsidiaries [line items]
Subsidiary name	Nova Asa Branca II Energias Renováveis S.A.
Headquarters	Parazinho/RN
Main activity	Production of electricity from wind sources
Interest	100.00%
Investor	Copel GeT
Nova Asa Branca III Energias Renovaveis S.A. [member]
Disclosure of subsidiaries [line items]
Subsidiary name	Nova Asa Branca III Energias Renováveis S.A.
Headquarters	Parazinho/RN
Main activity	Production of electricity from wind sources
Interest	100.00%
Investor	Copel GeT
Nova Eurus IV Energias Renovaveis S.A. [member]
Disclosure of subsidiaries [line items]
Subsidiary name	Nova Eurus IV Energias Renováveis S.A.
Headquarters	Touros/RN
Main activity	Production of electricity from wind sources
Interest	100.00%
Investor	Copel GeT
Santa Maria Energias Renovaveis S.A. [member]
Disclosure of subsidiaries [line items]
Subsidiary name	Santa Maria Energias Renováveis S.A.
Headquarters	Maracanaú/CE
Main activity	Production of electricity from wind sources
Interest	100.00%
Investor	Copel GeT
Santa Helena Energias Renovaveis S.A. [member]
Disclosure of subsidiaries [line items]
Subsidiary name	Santa Helena Energias Renováveis S.A.
Headquarters	Maracanaú/CE
Main activity	Production of electricity from wind sources
Interest	100.00%
Investor	Copel GeT
Ventos de Santo Uriel S.A. [member]
Disclosure of subsidiaries [line items]
Subsidiary name	Ventos de Santo Uriel S.A.
Headquarters	João Câmara/RN
Main activity	Production of electricity from wind sources
Interest	100.00%
Investor	Copel GeT
Cutia Empreendimentos Eolicos S.A. [member]
Disclosure of subsidiaries [line items]
Subsidiary name	Cutia Empreendimentos Eólicos S.A. (Cutia)
Headquarters	Curitiba/PR
Main activity	Control and management of interests
Interest	100.00%
Investor	Copel GeT
Costa Oeste Transmissora de Energia S.A. [member]
Disclosure of subsidiaries [line items]
Subsidiary name	Costa Oeste Transmissora de Energia S.A.
Headquarters	Curitiba/PR
Main activity	Transmission of electricity
Interest	100.00%
Investor	Copel GeT
Marumbi Transmissora de Energia S.A. [member]
Disclosure of subsidiaries [line items]
Subsidiary name	Marumbi Transmissora de Energia S.A.
Headquarters	Curitiba/PR
Main activity	Transmission of electricity
Interest	100.00%
Investor	Copel GeT
Uirapuru Transmissora de Energia S.A [member]
Disclosure of subsidiaries [line items]
Subsidiary name	Uirapuru Transmissora de Energia S.A
Headquarters	Curitiba/PR
Main activity	Transmission of electricity
Interest	100.00%
Investor	Copel GeT
Bela Vista Geracao de Energia S.A. [member]
Disclosure of subsidiaries [line items]
Subsidiary name	Bela Vista Geração de Energia S.A.	[2]
Headquarters	Curitiba/PR	[2]
Main activity	Production of electricity	[2]
Interest	100.00%	[2]
Investor	Copel GeT	[2]
F.D.A. Geracao de Energia Eletrica S.A. [member]
Disclosure of subsidiaries [line items]
Subsidiary name	F.D.A. Geração de Energia Elétrica S.A. (FDA)
Headquarters	Curitiba/PR
Main activity	Production of electricity
Interest	100.00%
Investor	Copel GeT
Jandaira I Energias Renovaveis S.A. [member]
Disclosure of subsidiaries [line items]
Subsidiary name	Jandaíra I Energias Renováveis S.A.	[2],[3]
Headquarters	Curitiba/PR	[2],[3]
Main activity	Production of electricity from wind sources	[2],[3]
Interest	100.00%	[2],[3]
Investor	Copel GeT	[2],[3]
Jandaira II Energias Renovaveis S.A. [member]
Disclosure of subsidiaries [line items]
Subsidiary name	Jandaíra II Energias Renováveis S.A.	[2],[3]
Headquarters	Curitiba/PR	[2],[3]
Main activity	Production of electricity from wind sources	[2],[3]
Interest	100.00%	[2],[3]
Investor	Copel GeT	[2],[3]
Jandaira III Energias Renovaveis S.A. [member]
Disclosure of subsidiaries [line items]
Subsidiary name	Jandaíra III Energias Renováveis S.A.	[2],[3]
Headquarters	Curitiba/PR	[2],[3]
Main activity	Production of electricity from wind sources	[2],[3]
Interest	100.00%	[2],[3]
Investor	Copel GeT	[2],[3]
Jandaira IV Energias Renovaveis S.A. [member]
Disclosure of subsidiaries [line items]
Subsidiary name	Jandaíra IV Energias Renováveis S.A.	[2],[3]
Headquarters	Curitiba/PR	[2],[3]
Main activity	Production of electricity from wind sources	[2],[3]
Interest	100.00%	[2],[3]
Investor	Copel GeT	[2],[3]
GE Olho D'agua S.A. [member]
Disclosure of subsidiaries [line items]
Subsidiary name	GE Olho D’Água S.A.
Headquarters	São Bento do Norte/RN
Main activity	Production of electricity from wind sources
Interest	100.00%
Investor	São Bento
GE Boa Vista S.A. [member]
Disclosure of subsidiaries [line items]
Subsidiary name	GE Boa Vista S.A.
Headquarters	São Bento do Norte/RN
Main activity	Production of electricity from wind sources
Interest	100.00%
Investor	São Bento
GE Farol S.A. [member]
Disclosure of subsidiaries [line items]
Subsidiary name	GE Farol S.A.
Headquarters	São Bento do Norte/RN
Main activity	Production of electricity from wind sources
Interest	100.00%
Investor	São Bento
GE Sao Bento do Norte S.A. [member]
Disclosure of subsidiaries [line items]
Subsidiary name	GE São Bento do Norte S.A.
Headquarters	São Bento do Norte/RN
Main activity	Production of electricity from wind sources
Interest	100.00%
Investor	São Bento
Central Geradora Eolica Sao Bento do Norte I S.A. [member]
Disclosure of subsidiaries [line items]
Subsidiary name	Central Geradora Eólica São Bento do Norte I S.A.
Headquarters	São Bento do Norte/RN
Main activity	Production of electricity from wind sources
Interest	100.00%
Investor	Cutia
Central Geradora Eolica Sao Bento do Norte II S.A. [member]
Disclosure of subsidiaries [line items]
Subsidiary name	Central Geradora Eólica São Bento do Norte II S.A.
Headquarters	São Bento do Norte/RN
Main activity	Production of electricity from wind sources
Interest	100.00%
Investor	Cutia
Central Geradora Eolica Sao Bento do Norte III S.A. [member]
Disclosure of subsidiaries [line items]
Subsidiary name	Central Geradora Eólica São Bento do Norte III S.A.
Headquarters	São Bento do Norte/RN
Main activity	Production of electricity from wind sources
Interest	100.00%
Investor	Cutia
Central Geradora Eolica Sao Miguel I S.A. [member]
Disclosure of subsidiaries [line items]
Subsidiary name	Central Geradora Eólica São Miguel I S.A.
Headquarters	São Bento do Norte/RN
Main activity	Production of electricity from wind sources
Interest	100.00%
Investor	Cutia
Central Geradora Eolica Sao Miguel II S.A. [member]
Disclosure of subsidiaries [line items]
Subsidiary name	Central Geradora Eólica São Miguel II S.A.
Headquarters	São Bento do Norte/RN
Main activity	Production of electricity from wind sources
Interest	100.00%
Investor	Cutia
Central Geradora Eolica Sao Miguel III S.A. [member]
Disclosure of subsidiaries [line items]
Subsidiary name	Central Geradora Eólica São Miguel III S.A.
Headquarters	São Bento do Norte/RN
Main activity	Production of electricity from wind sources
Interest	100.00%
Investor	Cutia
Usina de Energia Eolica Guajiru S.A. [member]
Disclosure of subsidiaries [line items]
Subsidiary name	Usina de Energia Eólica Guajiru S.A.
Headquarters	São Bento do Norte/RN
Main activity	Production of electricity from wind sources
Interest	100.00%
Investor	Cutia
Usina de Energia Eolica Jangada S.A. [member]
Disclosure of subsidiaries [line items]
Subsidiary name	Usina de Energia Eólica Jangada S.A.
Headquarters	São Bento do Norte/RN
Main activity	Production of electricity from wind sources
Interest	100.00%
Investor	Cutia
Usina de Energia Eolica Potiguar S.A. [member]
Disclosure of subsidiaries [line items]
Subsidiary name	Usina de Energia Eólica Potiguar S.A.
Headquarters	São Bento do Norte/RN
Main activity	Production of electricity from wind sources
Interest	100.00%
Investor	Cutia
Usina de Energia Eolica Cutia S.A. [member]
Disclosure of subsidiaries [line items]
Subsidiary name	Usina de Energia Eólica Cutia S.A.
Headquarters	São Bento do Norte/RN
Main activity	Production of electricity from wind sources
Interest	100.00%
Investor	Cutia
Usina de Energia Eolica Maria Helena S.A. [member]
Disclosure of subsidiaries [line items]
Subsidiary name	Usina de Energia Eólica Maria Helena S.A.
Headquarters	São Bento do Norte/RN
Main activity	Production of electricity from wind sources
Interest	100.00%
Investor	Cutia
Usina de Energia Eolica Esperanca do Nordeste S.A. [member]
Disclosure of subsidiaries [line items]
Subsidiary name	Usina de Energia Eólica Esperança do Nordeste S.A.
Headquarters	São Bento do Norte/RN
Main activity	Production of electricity from wind sources
Interest	100.00%
Investor	Cutia
Usina de Energia Eolica Paraiso dos Ventos do Nordeste S.A. [member]
Disclosure of subsidiaries [line items]
Subsidiary name	Usina de Energia Eólica Paraíso dos Ventos do Nordeste S.A.
Headquarters	São Bento do Norte/RN
Main activity	Production of electricity from wind sources
Interest	100.00%
Investor	Cutia
[1]	In October 2020 there was a change in the bylaws of Copel Renovaveis S.A. which included the change of the corporate name to Copel Servicos S.A.
[2]	Pre-operating stage.
[3]	SPEs established with a 99.99% interest in Copel GeT and 0.1% in Cutia. The transfer of all shares to Copel GeT is in progress.

1 Operations (Details 1)

1 Operations (Details 1)	12 Months Ended
	Dec. 31, 2020
Solar Parana GD Participcoes S.A. [member]
Disclosure of joint ventures [line items]
Joint ventures	Solar Paraná GD Participções S.A.
Headquarters	Curitiba/PR
Main activity	Interests in companies
Interest	49.00%
Investor	Copel
Voltalia Sao Miguel do Gostoso I Participacoes S.A. [member]
Disclosure of joint ventures [line items]
Joint ventures	Voltalia São Miguel do Gostoso I Participações S.A.
Headquarters	São Paulo/SP
Main activity	Interests in companies
Interest	49.00%
Investor	Copel
Parana Gas Exploracao e Producao S.A. [member]
Disclosure of joint ventures [line items]
Joint ventures	Paraná Gás Exploração e Produção S.A.	[1]
Headquarters	Curitiba/PR	[1]
Main activity	Extraction of oil and natural gas	[1]
Interest	30.00%	[1]
Investor	Copel	[1]
Caiua Transmissora de Energia S.A. [member]
Disclosure of joint ventures [line items]
Joint ventures	Caiuá Transmissora de Energia S.A.
Headquarters	Rio de Janeiro/RJ
Main activity	Transmission of electricity
Interest	49.00%
Investor	Copel GeT
Integracao Maranhense Transmissora de Energia S.A. [member]
Disclosure of joint ventures [line items]
Joint ventures	Integração Maranhense Transmissora de Energia S.A.
Headquarters	Rio de Janeiro/RJ
Main activity	Transmission of electricity
Interest	49.00%
Investor	Copel GeT
Matrincha Transmissora de Energia (TP NORTE) S.A. [member]
Disclosure of joint ventures [line items]
Joint ventures	Matrinchã Transmissora de Energia (TP NORTE) S.A.
Headquarters	Rio de Janeiro/RJ
Main activity	Transmission of electricity
Interest	49.00%
Investor	Copel GeT
Guaraciaba Transmissora de Energia (TP SUL) S.A. [member]
Disclosure of joint ventures [line items]
Joint ventures	Guaraciaba Transmissora de Energia (TP SUL) S.A.
Headquarters	Rio de Janeiro/RJ
Main activity	Transmission of electricity
Interest	49.00%
Investor	Copel GeT
Paranaiba Transmissora de Energia S.A. [member]
Disclosure of joint ventures [line items]
Joint ventures	Paranaíba Transmissora de Energia S.A.
Headquarters	Rio de Janeiro/RJ
Main activity	Transmission of electricity
Interest	24.50%
Investor	Copel GeT
Mata de Santa Genebra Transmissao S.A. [member]
Disclosure of joint ventures [line items]
Joint ventures	Mata de Santa Genebra Transmissão S.A.
Headquarters	Jundiaí/SP
Main activity	Transmission of electricity	[2]
Interest	50.10%	[2]
Investor	Copel GeT	[2]
Cantareira Transmissora de Energia S.A. [member]
Disclosure of joint ventures [line items]
Joint ventures	Cantareira Transmissora de Energia S.A.
Headquarters	Rio de Janeiro/RJ
Main activity	Transmission of electricity
Interest	49.00%
Investor	Copel GeT
[1]	Project with halted activities due to a Public Civil Action pending judgment by Federal Court. An arbitration proceeding will be started to decide about relief ofcontractual obligations with no burden for bidders, with consequent return of signing up bonus, refund of incurred costs with collateral and relief of collateral provided.
[2]	On November 11, 2020, the last asset of the project entered into commercial operation, so that the transmission line is 100% operational.

1 Operations (Details 2)

1 Operations (Details 2) - Fair Value [member] R$ in Thousands	Dec. 31, 2020BRL (R$)
Disclosure of detailed information about business combination [line items]
Fair value on net assets acquired	R$ 1106
Percentage of interest transferred	49.00%
Fair value on net assets acquired by Copel	R$ 542
Bargain purchase (negative goodwill)	R$ 248

1 Operations (Details 3)

1 Operations (Details 3)	12 Months Ended
	Dec. 31, 2020
Dona Francisca Energetica S.A [Member]
Disclosure of associates [line items]
Associate name	Dona Francisca Energética S.A.
Headquarters	Agudo/RS
Main activity	Production of electricity
Interest	23.0303%
Investor	Copel
Foz Do Chopim Energetica Ltda [member]
Disclosure of associates [line items]
Associate name	Foz do Chopim Energética Ltda.
Headquarters	Curitiba/PR
Main activity	Production of electricity
Interest	35.77%
Investor	Copel GeT
Carbocampel S.A. [member]
Disclosure of associates [line items]
Associate name	Carbocampel S.A.
Headquarters	Figueira/PR
Main activity	Coal exploration
Interest	49.00%
Investor	Copel

1 Operations (Details 4)

1 Operations (Details 4)	12 Months Ended
	Dec. 31, 2020
Consorcio Energetico Cruzeiro do Sul - Copel GeT [member] | Copel GeT [member]
Disclosure of joint operations [line items]
Joint operation name	Consórcio Energético Cruzeiro do Sul (Note 17.4)
Consortium members	Copel GeT
Interest	51.00%
Consorcio Energetico Cruzeiro do Sul - Copel GeT [member] | Eletrosul Centrais Eletricas S.A. [member]
Disclosure of joint operations [line items]
Joint operation name	Consórcio Energético Cruzeiro do Sul (Note 17.4)
Consortium members	Eletrosul Centrais Elétricas S.A.
Interest	49.00%
Consorcio Empreendedor Baixo Iguacu [member] | Copel GeT [member]
Disclosure of joint operations [line items]
Joint operation name	Consórcio Empreendedor Baixo Iguaçu (Note 17.4)
Consortium members	Copel GeT
Interest	30.00%
Consorcio Empreendedor Baixo Iguacu [member] | Geracao Ceu Azul S.A (subsidiary of Neoenergia S.A.) [member]
Disclosure of joint operations [line items]
Joint operation name	Consórcio Empreendedor Baixo Iguaçu (Note 17.4)
Consortium members	Geração Céu Azul S.A (subsidiary of Neoenergia S.A.)
Interest	70.00%
Consorcio Copel Energia a Gas Natural [member] | Copel [member]
Disclosure of joint operations [line items]
Joint operation name	Consórcio Copel Energia a Gás Natural
Consortium members	Copel
Interest	49.00%
Consorcio Copel Energia a Gas Natural [member] | Shell Brasil Petroleo Ltda. [member]
Disclosure of joint operations [line items]
Joint operation name	Consórcio Copel Energia a Gás Natural
Consortium members	Shell Brasil Petróleo Ltda.
Interest	51.00%
Consorcio Parana IP [member] | Copel [member]
Disclosure of joint operations [line items]
Joint operation name	Consórcio Paraná IP
Consortium members	Copel
Interest	49.00%
Consorcio Parana IP [member] | Consorcio BRC [member]
Disclosure of joint operations [line items]
Joint operation name	Consórcio Paraná IP
Consortium members	Consórcio BRC
Interest	51.00%

1 Operations (Details Narrative

1 Operations (Details Narrative) R$ in Thousands	Mar. 02, 2021BRL (R$)Plant	Dec. 23, 2020BRL (R$)	May 18, 2020	May 01, 2020	Apr. 08, 2020BRL (R$)	Dec. 31, 2020BRL (R$)	Dec. 31, 2019BRL (R$)	Dec. 10, 2020BRL (R$)	Jun. 25, 2020BRL (R$)	May 13, 2020BRL (R$)	Dec. 31, 2018BRL (R$)
Disclosure of joint ventures [line items]
Description of electric energy demand						The industrial and commercial consumption classes, which registered a decrease of 12.6% and 11.8% in the year, respectively, in relation to the previous year.
Percentage of growth in residential class						5.50%
Sector financial liabilities					R$ 84881					R$ 8666
Total amount requised of provisions									R$ 869516
Advance amount									R$ 536359
Estimated expected credit losses						R$ 35800
Percentage of drop in consumation capative energy market						3.10%
Percentage of over-contracting electricity						105.50%
Deferred tax assets						R$ 1191104	R$ 1011866				R$ 1007061
Net working capital						1,753,039	2,563,575
Cash and cash equivalents						R$ 3222768	R$ 2941727
Amount received for sale of assets		R$ 1536
Amount of renegotiation of hydrological risk	R$ 1366343
Description consumers with consumption			Decree 10,350 was enacted, which provided for the creation of the Covid Account, intended for the electric sector to deal with the state of public calamity recognized by Legislative Decree 6, of March 20, 2020, and which regulated the Provisional Measure 950 valid until 05.08.2020.		for low-income consumers with consumption of up to 220 kWh/month, for a period of three months	for low-income consumers with consumption of up to 220 kWh/month, for a period of three months
Description provisional Measure					valid until 05.08.2020, Provisional Measure 950 was enacted by the Federal Government
Number of eligible plants | Plant	15
Description commercial operation began				commercial operation began with 3 MWp (megawatt-peak, photovoltaic power unit) out of a total of 5.36 MWp of installed power, enough to already serve the energy consumption of approximately 2,500 homes.
Domino Holdings Ltda [member]
Disclosure of joint ventures [line items]
Amount transferred to other receivables								R$ 153
Commercial and industrial classes [member] | Bottom Of Range [member]
Disclosure of joint ventures [line items]
Percentage of reduced consumption						11.80%
Commercial and industrial classes [member] | Top Of Range [member]
Disclosure of joint ventures [line items]
Percentage of reduced consumption						12.60%

2 Concessions and Authorizati_3

2 Concessions and Authorizations (Details)	12 Months Ended
	Dec. 31, 2020
Concession contracts [member] | Parana gas [member]
Disclosure of detailed information about service concession arrangements [line items]
Concessions agreements or authorizations	PART-T-300_R12 4861-.0000.99/2014-00 - ANP
Interest	30.00%
Maturity	05.15.2045
Concession contracts [member] | Usina de energia eolica sao joao s.a. [member]
Disclosure of detailed information about service concession arrangements [line items]
Concessions agreements or authorizations	MME Ordinance 173 /2012 - WPP S?o Jo?o	[1]
Interest	49.00%	[1]
Maturity	03.26.2047	[1]
Concession contracts [member] | Usina de energia eolica carnauba s.a. [member]
Disclosure of detailed information about service concession arrangements [line items]
Concessions agreements or authorizations	MME Ordinance 204 /2012 - WPP Carna?bas	[1]
Interest	49.00%	[1]
Maturity	04.09.2047	[1]
Concession contracts [member] | Usina de energia eolica reduto s.a. [member]
Disclosure of detailed information about service concession arrangements [line items]
Concessions agreements or authorizations	MME Ordinance 230 /2012 - WPP Reduto	[1]
Interest	49.00%	[1]
Maturity	04.16.2047	[1]
Concession contracts [member] | Usina de energia eolica santo cristo s.a. [member]
Disclosure of detailed information about service concession arrangements [line items]
Concessions agreements or authorizations	MME Ordinance 233/2012 - WPP Santo Cristo	[1]
Interest	49.00%	[1]
Maturity	04.18.2047	[1]
Concession contracts [member] | Dona Francisca Energetica S.A [Member]
Disclosure of detailed information about service concession arrangements [line items]
Concessions agreements or authorizations	Contract 188/1998 - HPP Dona Francisca
Interest	23.00%
Maturity	08.28.2033
Concession contracts [member] | Copel Distribuicao S.A. [member]
Disclosure of detailed information about service concession arrangements [line items]
Concessions agreements or authorizations	Contract 046/1999, extended by 5th addendum to the contract
Interest	100.00%
Maturity	07.07.2045
Concession contracts [member] | Copel Telecomunicacoes S.A. [member]
Disclosure of detailed information about service concession arrangements [line items]
Concessions agreements or authorizations	Authorization term 54/2003 - Anatel/SVP/PVST
Interest	100.00%
Maturity	Indeterminate
Concession contracts [member] | Elejor [member]
Disclosure of detailed information about service concession arrangements [line items]
Concessions agreements or authorizations	Contract 125/2001 - HPP Fund?o and Santa Clara
Interest	70.00%
Maturity	05.28.2037
Concession contracts [member] | UEG Araucaria [member]
Disclosure of detailed information about service concession arrangements [line items]
Concessions agreements or authorizations	Authorization 351/1999 - TPP Arauc?ria (60.9% Copel GET)
Interest	20.30%
Maturity	12.23.2029
Concession contracts [member] | Compagas [member]
Disclosure of detailed information about service concession arrangements [line items]
Concessions agreements or authorizations	Concession gas distribution contract
Interest	51.00%
Maturity	01.20.2019
Concession agreement/authorization [member] | Copel Telecomunicacoes S.A. [member]
Disclosure of detailed information about service concession arrangements [line items]
Concessions agreements or authorizations	Authorization term 305/2012 - Anatel/SVP/PVST
Interest	100.00%
Maturity	Indeterminate
Concession agreement/authorization [member] | Elejor [member]
Disclosure of detailed information about service concession arrangements [line items]
Concessions agreements or authorizations	Authorization - SHP Fund?o I and SHP Santa Clara I - 753/2002 and 757/2002
Interest	70.00%
Maturity	12.19.2032
[1]	Subsidiaries of Voltalia Sao Miguel do Gostoso I Participacoes S.A.

2 Concessions and Authorizati_4

2 Concessions and Authorizations (Details 1) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Jan. 02, 2019
Disclosure of detailed information about service concession arrangements [line items]
Accounts receivable related to the concession	R$ 1902340	R$ 1878369		R$ 1796865
Intangible assets	6,929,456	6,332,611
Amortization	(372)	372
Compagas balances [member]
Disclosure of detailed information about service concession arrangements [line items]
Accounts receivable related to the concession	189,416	144,813	R$ 148720
Intangible assets	102,627	127,598	152,538
Fair value of assets from the indemnity for the concession	34,591	9,181	9,184
Amortization	(29,442)	(28,854)	(29,012)
Adjustments [member]
Disclosure of detailed information about service concession arrangements [line items]
Accounts receivable related to the concession		179,572	199,257
Intangible assets	29,739	(127,598)	(148,919)
Fair value of assets from the indemnity for the concession	(22,437)	1,234	3,009
Amortization	199	400	6,253
Copel balances [member]
Disclosure of detailed information about service concession arrangements [line items]
Accounts receivable related to the concession	189,416	324,385	347,977
Intangible assets	132,366		3,619
Fair value of assets from the indemnity for the concession	12,154	10,415	12,193
Amortization	R$ 29243	R$ 28454	R$ 22759

2 Concessions and Authorizati_5

2 Concessions and Authorizations (Details 2) - Copel geracao e transmissao s.a. [member] - Concession contracts [member]	12 Months Ended
	Dec. 31, 2020
Generation concession 001/2007 - HPP gov. jayme canet junior (maua) [member]
Disclosure of subsidiaries [line items]
Percentage of interest rate	51.00%
Maturity date	Feb. 7, 2042
Generation concession 001/2011 - HPP colider [member]
Disclosure of subsidiaries [line items]
Percentage of interest rate	100.00%
Maturity date	Jan. 17, 2046
Ordinance 133/2011 - SHP cavernoso II [member]
Disclosure of subsidiaries [line items]
Percentage of interest rate	100.00%
Maturity date	Feb. 28, 2046
Generation concession 002/2012 - HPP baixo Iguacu [member]
Disclosure of subsidiaries [line items]
Percentage of interest rate	30.00%
Maturity date	Oct. 30, 2049
HPP apucaraninha [member]
Disclosure of subsidiaries [line items]
Percentage of interest rate	100.00%
Maturity date	Oct. 12, 2025
HPP chamine [member]
Disclosure of subsidiaries [line items]
Percentage of interest rate	100.00%
Maturity date	Aug. 16, 2026
HPP derivacao do rio jordao [member]
Disclosure of subsidiaries [line items]
Percentage of interest rate	100.00%
Maturity date	Nov. 15, 2029
HPP cavernoso [member]
Disclosure of subsidiaries [line items]
Percentage of interest rate	100.00%
Maturity date	Jan. 7, 2031
TPP figueira [member]
Disclosure of subsidiaries [line items]
Percentage of interest rate	100.00%
Maturity date	Mar. 27, 2019
HPP sao jorge [member]
Disclosure of subsidiaries [line items]
Percentage of interest rate	100.00%
Maturity date	Dec. 5, 2024
HPP gov. ney aminthas de barros braga (segredo) [member]
Disclosure of subsidiaries [line items]
Percentage of interest rate	100.00%
Maturity date	Nov. 16, 2029
HPP gov. jose richa (salto caxias) [member]
Disclosure of subsidiaries [line items]
Percentage of interest rate	100.00%
Maturity date	May 5, 2030
Generation concession 001/2020 UHE guaricana [member]
Disclosure of subsidiaries [line items]
Percentage of interest rate	100.00%
Maturity date	Aug. 16, 2026
Authorization 278/1999 - WPP palmas [member]
Disclosure of subsidiaries [line items]
Percentage of interest rate	100.00%
Maturity date	Sep. 29, 2029
HGP salto do vau (only register with ANEEL) [member]
Disclosure of subsidiaries [line items]
Percentage of interest rate	100.00%
Generation concession 003/2016 - HPP gov. pedro viriato parigot de souza (GPS) [member]
Disclosure of subsidiaries [line items]
Percentage of interest rate	100.00%
Maturity date	Jan. 5, 2046
HPP marumbi - power generating plant registration: CGH. PH. PR. 001501-6.02 [member]
Disclosure of subsidiaries [line items]
Percentage of interest rate	100.00%
Authorization aneel 5,373/2015 - HGP chopim i (only register with ANEEL) [member]
Disclosure of subsidiaries [line items]
Percentage of interest rate	100.00%
UEG Araucaria [member]
Disclosure of subsidiaries [line items]
Percentage of interest rate	60.90%
Maturity date	Dec. 23, 2029
Nova asa branca i [member]
Disclosure of subsidiaries [line items]
Percentage of interest rate	100.00%
Maturity date	Apr. 25, 2046
Nova asa branca ii [member]
Disclosure of subsidiaries [line items]
Percentage of interest rate	100.00%
Maturity date	May 31, 2046
Nova asa branca iii [member]
Disclosure of subsidiaries [line items]
Percentage of interest rate	100.00%
Maturity date	May 31, 2046
Nova eurus iv [member]
Disclosure of subsidiaries [line items]
Percentage of interest rate	100.00%
Maturity date	Apr. 27, 2046
Santa maria [member]
Disclosure of subsidiaries [line items]
Percentage of interest rate	100.00%
Maturity date	May 8, 2047
Santa helena [member]
Disclosure of subsidiaries [line items]
Percentage of interest rate	100.00%
Maturity date	Apr. 9, 2047
Ventos de santo uriel [member]
Disclosure of subsidiaries [line items]
Percentage of interest rate	100.00%
Maturity date	Apr. 9, 2047
GE boa vista [member]
Disclosure of subsidiaries [line items]
Percentage of interest rate	100.00%
Maturity date	Apr. 28, 2046
GE farol [member]
Disclosure of subsidiaries [line items]
Percentage of interest rate	100.00%
Maturity date	Apr. 20, 2046
GE olho d agua [member]
Disclosure of subsidiaries [line items]
Percentage of interest rate	100.00%
Maturity date	Jun. 1, 2046
GE sao bento do norte [member]
Disclosure of subsidiaries [line items]
Percentage of interest rate	100.00%
Maturity date	May 19, 2046
Esperanca do nordeste [member]
Disclosure of subsidiaries [line items]
Percentage of interest rate	100.00%
Maturity date	May 11, 2050
Paraiso dos ventos do nordeste [member]
Disclosure of subsidiaries [line items]
Percentage of interest rate	100.00%
Maturity date	May 11, 2050
Usina de energia eolica jangada [member]
Disclosure of subsidiaries [line items]
Percentage of interest rate	100.00%
Maturity date	Jan. 5, 2042
Maria helena [member]
Disclosure of subsidiaries [line items]
Percentage of interest rate	100.00%
Maturity date	Jan. 5, 2042
Usina de energia eolica potiguar [member]
Disclosure of subsidiaries [line items]
Percentage of interest rate	100.00%
Maturity date	May 11, 2050
Usina de energia eolica guajiru [member]
Disclosure of subsidiaries [line items]
Percentage of interest rate	100.00%
Maturity date	Jan. 5, 2042
Usina de energia eolica cutia [member]
Disclosure of subsidiaries [line items]
Percentage of interest rate	100.00%
Maturity date	Jan. 5, 2042
Sao bento do norte i [member]
Disclosure of subsidiaries [line items]
Percentage of interest rate	100.00%
Maturity date	Aug. 4, 2050
Sao bento do norte ii [member]
Disclosure of subsidiaries [line items]
Percentage of interest rate	100.00%
Maturity date	Aug. 4, 2050
Sao bento do norte iii [member]
Disclosure of subsidiaries [line items]
Percentage of interest rate	100.00%
Maturity date	Aug. 4, 2050
Sao miguel i [member]
Disclosure of subsidiaries [line items]
Percentage of interest rate	100.00%
Maturity date	Aug. 4, 2050
Sao migueI ii [member]
Disclosure of subsidiaries [line items]
Percentage of interest rate	100.00%
Maturity date	Aug. 4, 2050
Sao migueI ii [member]
Disclosure of subsidiaries [line items]
Percentage of interest rate	100.00%
Maturity date	Aug. 4, 2050
Foz do chopim [member]
Disclosure of subsidiaries [line items]
Percentage of interest rate	35.77%
Maturity date	Apr. 24, 2030
SHP bela vista [member]
Disclosure of subsidiaries [line items]
Percentage of interest rate	100.00%	[1]
Maturity date	Jan. 2, 2041	[1]
F.D.A. geracao de energia eletrica [member]
Disclosure of subsidiaries [line items]
Percentage of interest rate	100.00%
Maturity date	Sep. 17, 2023
Jandaira i energias renovaveis [member]
Disclosure of subsidiaries [line items]
Percentage of interest rate	100.00%	[1]
Maturity date	Apr. 2, 2055	[1]
Jandaira ii energias renovaveis [member]
Disclosure of subsidiaries [line items]
Percentage of interest rate	100.00%	[1]
Maturity date	Apr. 2, 2055	[1]
Jandaira iii energias renovaveis [member]
Disclosure of subsidiaries [line items]
Percentage of interest rate	100.00%	[1]
Maturity date	Apr. 2, 2055	[1]
Jandaira iv energias renovaveis [member]
Disclosure of subsidiaries [line items]
Percentage of interest rate	100.00%	[1]
Maturity date	Apr. 2, 2055	[1]
Contract 060/2001 - transmission facilities (sundry transmission lines and substations) - extended by the 3rd addendum [member]
Disclosure of subsidiaries [line items]
Percentage of interest rate	100.00%
Maturity date	Jan. 1, 2043
Next tariff review	2023
Contract 075/2001 - transmission line 230 kV bateias - jaguariaiva [member]
Disclosure of subsidiaries [line items]
Percentage of interest rate	100.00%	[2]
Maturity date	Aug. 17, 2031	[2]
Contract 006/2008 - transmission line 230 kV bateias - pilarzinho [member]
Disclosure of subsidiaries [line items]
Percentage of interest rate	100.00%
Maturity date	Mar. 17, 2038
Next tariff review	2023
Contract 027/2009 - transmission line 525 kV foz do Iguacu - cascavel oeste [member]
Disclosure of subsidiaries [line items]
Percentage of interest rate	100.00%
Maturity date	Nov. 19, 2039
Next tariff review	2025
Contract 010/2010 - transmission line 500 kV araraquara ii - taubate [member]
Disclosure of subsidiaries [line items]
Percentage of interest rate	100.00%
Maturity date	Oct. 6, 2040
Next tariff review	2021
Contract 015/2010 - substation cerquilho iii 230/138 kV [member]
Disclosure of subsidiaries [line items]
Percentage of interest rate	100.00%
Maturity date	Oct. 6, 2040
Next tariff review	2021
Contract 022/2012 - transmission line 230 kV londrina - figueira and transmission line 230 kV foz do chopim - salto osorio [member]
Disclosure of subsidiaries [line items]
Percentage of interest rate	100.00%
Maturity date	Aug. 27, 2042
Next tariff review	2023
Contract 002/2013 - transmission line 230 kV assis - paraguacu paulista ii e substation paraguacu paulista ii 230 kV [member]
Disclosure of subsidiaries [line items]
Percentage of interest rate	100.00%
Maturity date	Feb. 25, 2043
Next tariff review	2023
Contract 005/2014 - transmission line 230 kV bateias - curitiba norte e substation curitiba norte 230/138 kV [member]
Disclosure of subsidiaries [line items]
Percentage of interest rate	100.00%
Maturity date	Jan. 29, 2044
Next tariff review	2024
Contract 021/2014 - transmission line 230 kV foz do chopim - realeza e substation realeza 230/138 kV [member]
Disclosure of subsidiaries [line items]
Percentage of interest rate	100.00%
Maturity date	Sep. 5, 2044
Next tariff review	2025
Contract 022/2014 - transmission line 500 kV assis - londrina [member]
Disclosure of subsidiaries [line items]
Percentage of interest rate	100.00%
Maturity date	Sep. 5, 2044
Next tariff review	2025
Contract 006/2016 - transmission line 525kV curitiba leste - blumenau [member]
Disclosure of subsidiaries [line items]
Percentage of interest rate	100.00%	[3]
Maturity date	Apr. 7, 2046	[3]
Next tariff review	2021	[3]
Costa oeste transmissora [member]
Disclosure of subsidiaries [line items]
Percentage of interest rate	100.00%
Maturity date	Jan. 12, 2042
Next tariff review	2022
Caiua transmissora [member]
Disclosure of subsidiaries [line items]
Percentage of interest rate	49.00%
Maturity date	May 10, 2042
Next tariff review	2022
Marumbi transmissora [member]
Disclosure of subsidiaries [line items]
Percentage of interest rate	100.00%
Maturity date	May 10, 2042
Next tariff review	2022
Integracao maranhense [member]
Disclosure of subsidiaries [line items]
Percentage of interest rate	49.00%
Maturity date	May 10, 2042
Next tariff review	2022
Matrincha transmissora [member]
Disclosure of subsidiaries [line items]
Percentage of interest rate	49.00%
Maturity date	May 10, 2042
Next tariff review	2022
Guaraciaba transmissora [member]
Disclosure of subsidiaries [line items]
Percentage of interest rate	49.00%
Maturity date	May 10, 2042
Next tariff review	2022
Paranaiba transmissora [member]
Disclosure of subsidiaries [line items]
Percentage of interest rate	24.50%
Maturity date	May 2, 2043
Next tariff review	2023
Mata de santa genebra [member]
Disclosure of subsidiaries [line items]
Percentage of interest rate	50.10%
Maturity date	May 14, 2044
Next tariff review	2024
Cantareira transmissora [member]
Disclosure of subsidiaries [line items]
Percentage of interest rate	49.00%
Maturity date	Sep. 5, 2044
Next tariff review	2025
Uirapuru Transmissora [member]
Disclosure of subsidiaries [line items]
Percentage of interest rate	100.00%	[2]
Maturity date	Mar. 4, 2035	[2]
[1]	Building under construction.
[2]	Do not undergo tariff review and RAP reduces to 50% in the 16th year
[3]	Beginning of commercial operation on April 1, 2021

2 Concessions and Authorizati_6

2 Concessions and Authorizations (Details Narrative)	May 01, 2020	Dec. 31, 2019
Disclosure of detailed information about property, plant and equipment [line items]
Description commercial operation began	commercial operation began with 3 MWp (megawatt-peak, photovoltaic power unit) out of a total of 5.36 MWp of installed power, enough to already serve the energy consumption of approximately 2,500 homes.
UHE Colider [member]
Disclosure of detailed information about property, plant and equipment [line items]
Description commercial operation began		in March, May and December 2019, the three generating units of the plant entered into commercial operation, respectively, totalizing 300 MW of installed power.
UHE Baixo Iguacu [member]
Disclosure of detailed information about property, plant and equipment [line items]
Description commercial operation began		Commercial operation of units 1 and 2 began in February 2019, with unit 3 starting in April 2019, with a total installed capacity of 350.2 MW.
Cutia and Bento Miguel Wind Complexes [member]
Disclosure of detailed information about property, plant and equipment [line items]
Description commercial operation began		From the last two week of December 2018 to March 2019, all wind farms went into commercial operation, with a total installed capacity of 312.9 MW.

3 Basis of Preparation (Details

3 Basis of Preparation (Details) - BRL (R$) R$ in Thousands	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
BasisOfPreparationDetailsLineItems [Line Items]
ASSETS	R$ 46784664
CURRENT ASSETS	11,407,431
Accounts receivable - concessions	4,515
Contract assets	285,682
NONCURRENT ASSETS	35,377,233
Accounts receivable - concessions	1,897,825
Contract assets	R$ 5207115
As previously stated [member]
BasisOfPreparationDetailsLineItems [Line Items]
ASSETS		R$ 38312550	R$ 36048122	[1]
CURRENT ASSETS		7,909,196	6,677,846	[1]
Accounts receivable - concessions		58,842	53,177	[1]
Contract assets		107,443	85,019	[1]
NONCURRENT ASSETS		30,403,354	29,370,276	[1]
Accounts receivable - concessions		2,558,796	2,497,514	[1]
Contract assets		3,943,941	3,348,211	[1]
Adjustments [member]
BasisOfPreparationDetailsLineItems [Line Items]
ASSETS
CURRENT ASSETS
Accounts receivable - concessions		(54,297)	(48,997)
Contract assets		54,297	48,997
NONCURRENT ASSETS
Accounts receivable - concessions		(684,972)	(704,829)
Contract assets		684,972	704,829
Restated [Member]
BasisOfPreparationDetailsLineItems [Line Items]
ASSETS		38,312,550	36,048,122
CURRENT ASSETS		7,909,196	6,677,846
Accounts receivable - concessions		4,545	4,180
Contract assets		161,740	134,016
NONCURRENT ASSETS		30,403,354	29,370,276
Accounts receivable - concessions		1,873,824	1,792,685
Contract assets		R$ 4628913	R$ 4053040
[1]	The balance considers the adjustments of 01.01.2019 resulting from the initial application of IFRS 16, as shown in Note 4.16 of the Consolidated Financial Statements of December 31, 2019.

3 Basis of Preparation (Detai_2

3 Basis of Preparation (Details 1) - BRL (R$) R$ / shares in Units, R$ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
STATEMENTS OF INCOME
NET OPERATING REVENUE	R$ 18633249
Operating costs	13,347,822
GROSS PROFIT	5,285,427
Selling expenses	(159,825)
General and administrative expenses	(809,408)
Other operational income (expenses)	(256,475)
Equity in earnings of investees	193,547
Profit before financial results and taxes	4,253,266
Financial results	866,271
Income tax and social contribution	5,119,537
Net income from continuing operations	3,834,172
Result of discontinued operations	75,578
Net income	3,909,750
Attributed to controlling shareholders	3,904,202
Attributed to non-controlling interest	5,548
STATEMENTS OF COMPREHENSIVE INCOME
Total comprehensive income, net of taxes	(179,155)
Total comprehensive income	3,730,595	R$ 1939685	R$ 1405644
Attributed to controlling shareholders		1,862,489	1,368,549
Attributed to non-controlling interest		77,196	37,095
STATEMENTS OF CASH FLOWS
Cash flow from opertional activities	3,940,844
Profit adjustments	3,577,975
Changes in assets and liabilities		114,729	392,952
Taxes and charges paid		(1,558,972)	(1,175,161)
Result of discontinued operations		328,808	114,251
Cash flow from investment activities	(1,667,571)
Property, plant and equipment and intangible assets		(372,594)	(1,216,102)
Other activities		(1,115,489)	(652,509)
Discontinued operations		(175,568)	(280,542)
Cash flow from financing activities	(1,715,113)
Loan, debentures and lease payments		(3,659,680)	(2,612,007)
Other activities		(380,421)	(300,722)
Discontinued operations		R$ 200740	R$ 5804
Total effects on cash and cash equivalents	R$ 558160
Gross value of dividends per share	R$ 0.88128	R$ 0.22423	R$ 0.13195
Common shares [member]
STATEMENTS OF CASH FLOWS
Basic and diluted net earning per share attributed to controlling shareholders	1.36229
Gross value of dividends per share		0.22423	0.13195
Class "A" preferred [member]
STATEMENTS OF CASH FLOWS
Basic and diluted net earning per share attributed to controlling shareholders	1.80062
Class "B" Preferred Stock [member]
STATEMENTS OF CASH FLOWS
Basic and diluted net earning per share attributed to controlling shareholders	R$ 1.49852
Gross value of dividends per share		R$ 0.24669	R$ 0.14515
As previously stated [member]
STATEMENTS OF INCOME
NET OPERATING REVENUE		R$ 16244274	R$ 14934780
Operating costs		(11,760,176)	(11,501,688)
GROSS PROFIT		4,484,098	3,433,092
Selling expenses		(207,059)	(148,709)
General and administrative expenses		(734,300)	(723,534)
Other operational income (expenses)		(458,815)	(302,690)
Equity in earnings of investees		106,757	135,888
Profit before financial results and taxes		3,190,681	2,394,047
Financial results		(488,486)	(438,050)
Operating profit		2,702,195	1,955,997
Income tax and social contribution		(639,326)	(511,993)
Net income from continuing operations		2,062,869	(1,444,004)
Result of discontinued operations
Attributed to controlling shareholders		1,989,946	1,407,063
Attributed to non-controlling interest		72,923	36,941
STATEMENTS OF COMPREHENSIVE INCOME
Total comprehensive income, net of taxes		(123,184)	(38,360)
Total comprehensive income		1,939,685	1,405,644
Attributed to controlling shareholders		1,862,489	1,368,549
Attributed to non-controlling interest		77,196	37,095
STATEMENTS OF CASH FLOWS
Cash flow from opertional activities		2,945,006	1,770,971
Net income		2,062,869	1,444,004
Profit adjustments		2,416,665	1,204,142
Changes in assets and liabilities		75,908	381,474
Taxes and charges paid		(1,610,436)	(1,258,649)
Result of discontinued operations
Cash flow from investment activities		(1,663,651)	(2,149,153)
Property, plant and equipment and intangible assets		(548,162)	(1,496,644)
Other activities		(1,115,489)	(652,509)
Discontinued operations
Cash flow from financing activities		(288,037)	1,286,516
Issue of Loans and Debentures		3,761,324	4,205,049
Loan, debentures and lease payments		(3,668,940)	(2,617,811)
Other activities		(380,421)	(300,722)
Discontinued operations
Total effects on cash and cash equivalents		R$ 993318	R$ 908334
As previously stated [member] | Common shares [member]
STATEMENTS OF CASH FLOWS
Basic and diluted net earning per share attributed to controlling shareholders		R$ 6.94344	R$ 4.91091
Gross value of dividends per share		2.24235	1.31950
As previously stated [member] | Class "A" preferred [member]
STATEMENTS OF CASH FLOWS
Basic and diluted net earning per share attributed to controlling shareholders		9.11525	5.40201
Gross value of dividends per share		3.94657	2.89050
As previously stated [member] | Class "B" Preferred Stock [member]
STATEMENTS OF CASH FLOWS
Basic and diluted net earning per share attributed to controlling shareholders		7.63812	5.40201
Gross value of dividends per share		R$ 2.46692	R$ 1.45151
Discontinued operations [member]
STATEMENTS OF INCOME
NET OPERATING REVENUE		R$ 375029	R$ 384316
Operating costs		296,028	128,780
GROSS PROFIT		(79,001)	(255,536)
Selling expenses		31,287	43,295
General and administrative expenses		23,011	16,690
Other operational income (expenses)		136,309	52,686
Equity in earnings of investees
Profit before financial results and taxes		111,606	(142,865)
Financial results		33,122	24,905
Operating profit		144,728	(117,960)
Income tax and social contribution		(36,335)	40,827
Net income from continuing operations		108,393	(77,133)
Result of discontinued operations		(108,393)	77,133
Net income
Attributed to controlling shareholders
Attributed to non-controlling interest
STATEMENTS OF COMPREHENSIVE INCOME
Total comprehensive income, net of taxes
Total comprehensive income
Attributed to controlling shareholders
Attributed to non-controlling interest
STATEMENTS OF CASH FLOWS
Cash flow from opertional activities
Net income
Profit adjustments		(419,093)	(209,217)
Changes in assets and liabilities		38,821	11,478
Taxes and charges paid		51,464	83,488
Result of discontinued operations		328,808	114,251
Cash flow from investment activities
Property, plant and equipment and intangible assets		175,568	280,542
Other activities
Discontinued operations		(175,568)	(280,542)
Cash flow from financing activities
Issue of Loans and Debentures		(210,000)
Loan, debentures and lease payments		9,260	5,804
Other activities
Discontinued operations		200,740	(5,804)
Total effects on cash and cash equivalents

4 Significant Accounting Poli_3

4 Significant Accounting Policies (Details Narrative) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Significant Accounting Policies [Abstract]
Percentage of construction margin adopted for the transmission activity	1.65%	1.65%	1.65%
Applicable tax rate	15.00%
Applicable tax rate with surtax	10.00%
Minimum amount for income tax	R$ 240
Percentage for social contribution	9.00%
lease term	12 months
Percentage of limit of taxable profit	30.00%

5 Cash and Cash Equivalents (De

5 Cash and Cash Equivalents (Details) - BRL (R$) R$ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Disclosure of fair value measurement of assets [line items]
Cash and cash equivalents	R$ 3222768	R$ 2941727
Cash and bank accounts [member]
Disclosure of fair value measurement of assets [line items]
Cash and cash equivalents	228,711	263,188
Financial investments with immediate liquidity [member]
Disclosure of fair value measurement of assets [line items]
Cash and cash equivalents	R$ 2994057	R$ 2678539

5 Cash and Cash Equivalents (_2

5 Cash and Cash Equivalents (Details Narrative)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Cash and cash equivalents [abstract]
Interbank deposit certificate	85.00%	101.50%

6 Bonds and Securities (Details

6 Bonds and Securities (Details) - BRL (R$) R$ in Thousands		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019
Disclosure of fair value measurement of assets [line items]
Bonds and securities		R$ 300530	R$ 282081
Bonds and securities, current		1,465	3,112
Bonds and securities, noncurrent		299,065	278,969
Bank deposit certificates - CDB [member]
Disclosure of fair value measurement of assets [line items]
Bonds and securities		R$ 62638	50,216
Index		90% to 101% of CDI
Committed operation [member]
Disclosure of fair value measurement of assets [line items]
Bonds and securities			3,632
Index		96.5% of CDI
Financial treasury bonds - LFT [member]
Disclosure of fair value measurement of assets [line items]
Bonds and securities		R$ 751	733
Index		Selic
National treasury bills - LTN [member]
Disclosure of fair value measurement of assets [line items]
Bonds and securities			1,696
Index		CDI
Quotas in funds [member]
Disclosure of fair value measurement of assets [line items]
Bonds and securities	[1]	R$ 237141	R$ 225804
Index	[1]	CDI
[1]	These are fixed income funds in the Parent Company and reserve accounts intended to comply with contracts with BNDES, in other companies.

6 Bonds and Securities (Detai_2

6 Bonds and Securities (Details Narrative)	12 Months Ended
	Dec. 31, 2020
Bonds And Securities [Abstract]
Description of securites term	The term of these securities ranges from 4 to 51 months from the end of the reporting period.

7 Trade Accounts Receivable (De

7 Trade Accounts Receivable (Details) - BRL (R$) R$ in Thousands	Dec. 31, 2020	Dec. 31, 2019
TradeAndOtherReceivablesLineItems [Line Items]
Trade Accounts Receivable	R$ 3819680	R$ 3182567
Current	3,768,242	3,120,168
Noncurrent	51,438	62,399
Balance falling due [member]
TradeAndOtherReceivablesLineItems [Line Items]
Trade Accounts Receivable	3,368,640
Overdue up to 90 days [member]
TradeAndOtherReceivablesLineItems [Line Items]
Trade Accounts Receivable	349,187
2021 [member]
TradeAndOtherReceivablesLineItems [Line Items]
Trade Accounts Receivable	101,853
Customers [member]
TradeAndOtherReceivablesLineItems [Line Items]
Trade Accounts Receivable	2,743,508	2,498,744
Customers [member] | Balance falling due [member]
TradeAndOtherReceivablesLineItems [Line Items]
Trade Accounts Receivable	2,087,435
Customers [member] | Overdue up to 90 days [member]
TradeAndOtherReceivablesLineItems [Line Items]
Trade Accounts Receivable	356,605
Customers [member] | 2021 [member]
TradeAndOtherReceivablesLineItems [Line Items]
Trade Accounts Receivable	299,468
Customers [member] | Residential [member]
TradeAndOtherReceivablesLineItems [Line Items]
Trade Accounts Receivable	639,424	579,715
Customers [member] | Residential [member] | Balance falling due [member]
TradeAndOtherReceivablesLineItems [Line Items]
Trade Accounts Receivable	388,190
Customers [member] | Residential [member] | Overdue up to 90 days [member]
TradeAndOtherReceivablesLineItems [Line Items]
Trade Accounts Receivable	211,050
Customers [member] | Residential [member] | 2021 [member]
TradeAndOtherReceivablesLineItems [Line Items]
Trade Accounts Receivable	40,184
Customers [member] | Industrial [member]
TradeAndOtherReceivablesLineItems [Line Items]
Trade Accounts Receivable	312,302	298,719
Customers [member] | Industrial [member] | Balance falling due [member]
TradeAndOtherReceivablesLineItems [Line Items]
Trade Accounts Receivable	213,229
Customers [member] | Industrial [member] | Overdue up to 90 days [member]
TradeAndOtherReceivablesLineItems [Line Items]
Trade Accounts Receivable	21,048
Customers [member] | Industrial [member] | 2021 [member]
TradeAndOtherReceivablesLineItems [Line Items]
Trade Accounts Receivable	78,025
Customers [member] | Commercial [member]
TradeAndOtherReceivablesLineItems [Line Items]
Trade Accounts Receivable	335,439	363,986
Customers [member] | Commercial [member] | Balance falling due [member]
TradeAndOtherReceivablesLineItems [Line Items]
Trade Accounts Receivable	255,691
Customers [member] | Commercial [member] | Overdue up to 90 days [member]
TradeAndOtherReceivablesLineItems [Line Items]
Trade Accounts Receivable	51,502
Customers [member] | Commercial [member] | 2021 [member]
TradeAndOtherReceivablesLineItems [Line Items]
Trade Accounts Receivable	28,246
Customers [member] | Rural [member]
TradeAndOtherReceivablesLineItems [Line Items]
Trade Accounts Receivable	109,651	103,271
Customers [member] | Rural [member] | Balance falling due [member]
TradeAndOtherReceivablesLineItems [Line Items]
Trade Accounts Receivable	87,666
Customers [member] | Rural [member] | Overdue up to 90 days [member]
TradeAndOtherReceivablesLineItems [Line Items]
Trade Accounts Receivable	21,676
Customers [member] | Rural [member] | 2021 [member]
TradeAndOtherReceivablesLineItems [Line Items]
Trade Accounts Receivable	309
Customers [member] | Public entities [member]
TradeAndOtherReceivablesLineItems [Line Items]
Trade Accounts Receivable	37,370	55,847
Customers [member] | Public entities [member] | Balance falling due [member]
TradeAndOtherReceivablesLineItems [Line Items]
Trade Accounts Receivable	32,687
Customers [member] | Public entities [member] | Overdue up to 90 days [member]
TradeAndOtherReceivablesLineItems [Line Items]
Trade Accounts Receivable	1,646
Customers [member] | Public entities [member] | 2021 [member]
TradeAndOtherReceivablesLineItems [Line Items]
Trade Accounts Receivable	3,037
Customers [member] | Public lighting [member]
TradeAndOtherReceivablesLineItems [Line Items]
Trade Accounts Receivable	46,615	38,523
Customers [member] | Public lighting [member] | Balance falling due [member]
TradeAndOtherReceivablesLineItems [Line Items]
Trade Accounts Receivable	42,319
Customers [member] | Public lighting [member] | Overdue up to 90 days [member]
TradeAndOtherReceivablesLineItems [Line Items]
Trade Accounts Receivable	4,296
Customers [member] | Public lighting [member] | 2021 [member]
TradeAndOtherReceivablesLineItems [Line Items]
Trade Accounts Receivable
Customers [member] | Public service [member]
TradeAndOtherReceivablesLineItems [Line Items]
Trade Accounts Receivable	41,812	44,983
Customers [member] | Public service [member] | Balance falling due [member]
TradeAndOtherReceivablesLineItems [Line Items]
Trade Accounts Receivable	40,856
Customers [member] | Public service [member] | Overdue up to 90 days [member]
TradeAndOtherReceivablesLineItems [Line Items]
Trade Accounts Receivable	658
Customers [member] | Public service [member] | 2021 [member]
TradeAndOtherReceivablesLineItems [Line Items]
Trade Accounts Receivable	298
Customers [member] | Unbilled - captives [member]
TradeAndOtherReceivablesLineItems [Line Items]
Trade Accounts Receivable	583,209	516,203
Customers [member] | Unbilled - captives [member] | Balance falling due [member]
TradeAndOtherReceivablesLineItems [Line Items]
Trade Accounts Receivable	583,209
Customers [member] | Unbilled - captives [member] | Overdue up to 90 days [member]
TradeAndOtherReceivablesLineItems [Line Items]
Trade Accounts Receivable
Customers [member] | Unbilled - captives [member] | 2021 [member]
TradeAndOtherReceivablesLineItems [Line Items]
Trade Accounts Receivable
Customers [member] | Energy installments plan - captives [member]
TradeAndOtherReceivablesLineItems [Line Items]
Trade Accounts Receivable	291,847	204,192
Customers [member] | Energy installments plan - captives [member] | Balance falling due [member]
TradeAndOtherReceivablesLineItems [Line Items]
Trade Accounts Receivable	206,170
Customers [member] | Energy installments plan - captives [member] | Overdue up to 90 days [member]
TradeAndOtherReceivablesLineItems [Line Items]
Trade Accounts Receivable	20,011
Customers [member] | Energy installments plan - captives [member] | 2021 [member]
TradeAndOtherReceivablesLineItems [Line Items]
Trade Accounts Receivable	65,666
Customers [member] | Low income subsidy-eletrobras [member]
TradeAndOtherReceivablesLineItems [Line Items]
Trade Accounts Receivable	13,783	12,174
Customers [member] | Low income subsidy-eletrobras [member] | Balance falling due [member]
TradeAndOtherReceivablesLineItems [Line Items]
Trade Accounts Receivable	13,783
Customers [member] | Low income subsidy-eletrobras [member] | Overdue up to 90 days [member]
TradeAndOtherReceivablesLineItems [Line Items]
Trade Accounts Receivable
Customers [member] | Low income subsidy-eletrobras [member] | 2021 [member]
TradeAndOtherReceivablesLineItems [Line Items]
Trade Accounts Receivable
Customers [member] | Other receivables [member]
TradeAndOtherReceivablesLineItems [Line Items]
Trade Accounts Receivable	168,270	148,375
Customers [member] | Other receivables [member] | Balance falling due [member]
TradeAndOtherReceivablesLineItems [Line Items]
Trade Accounts Receivable	62,362
Customers [member] | Other receivables [member] | Overdue up to 90 days [member]
TradeAndOtherReceivablesLineItems [Line Items]
Trade Accounts Receivable	23,105
Customers [member] | Other receivables [member] | 2021 [member]
TradeAndOtherReceivablesLineItems [Line Items]
Trade Accounts Receivable	82,803
Customers [member] | Free consumers [member]
TradeAndOtherReceivablesLineItems [Line Items]
Trade Accounts Receivable	163,786	132,756
Customers [member] | Free consumers [member] | Balance falling due [member]
TradeAndOtherReceivablesLineItems [Line Items]
Trade Accounts Receivable	161,273
Customers [member] | Free consumers [member] | Overdue up to 90 days [member]
TradeAndOtherReceivablesLineItems [Line Items]
Trade Accounts Receivable	1,613
Customers [member] | Free consumers [member] | 2021 [member]
TradeAndOtherReceivablesLineItems [Line Items]
Trade Accounts Receivable	900
Concessionaires, permission holder and trading companies [member] | Regulated contracts [member]
TradeAndOtherReceivablesLineItems [Line Items]
Trade Accounts Receivable	170,951	159,492
Concessionaires, permission holder and trading companies [member] | Regulated contracts [member] | Balance falling due [member]
TradeAndOtherReceivablesLineItems [Line Items]
Trade Accounts Receivable	162,290
Concessionaires, permission holder and trading companies [member] | Regulated contracts [member] | Overdue up to 90 days [member]
TradeAndOtherReceivablesLineItems [Line Items]
Trade Accounts Receivable	1,792
Concessionaires, permission holder and trading companies [member] | Regulated contracts [member] | 2021 [member]
TradeAndOtherReceivablesLineItems [Line Items]
Trade Accounts Receivable	6,869
Concessionaires, permission holder and trading companies [member] | Bilateral contracts [member]
TradeAndOtherReceivablesLineItems [Line Items]
Trade Accounts Receivable	265,432	191,463
Concessionaires, permission holder and trading companies [member] | Bilateral contracts [member] | Balance falling due [member]
TradeAndOtherReceivablesLineItems [Line Items]
Trade Accounts Receivable	265,432
Concessionaires, permission holder and trading companies [member] | Bilateral contracts [member] | Overdue up to 90 days [member]
TradeAndOtherReceivablesLineItems [Line Items]
Trade Accounts Receivable
Concessionaires, permission holder and trading companies [member] | Bilateral contracts [member] | 2021 [member]
TradeAndOtherReceivablesLineItems [Line Items]
Trade Accounts Receivable
Concessionaires, permission holder and trading companies [member] | CCEE [member]
TradeAndOtherReceivablesLineItems [Line Items]
Trade Accounts Receivable	652,904	315,712
Concessionaires, permission holder and trading companies [member] | CCEE [member] | Balance falling due [member]
TradeAndOtherReceivablesLineItems [Line Items]
Trade Accounts Receivable	533,223
Concessionaires, permission holder and trading companies [member] | CCEE [member] | Overdue up to 90 days [member]
TradeAndOtherReceivablesLineItems [Line Items]
Trade Accounts Receivable	16
Concessionaires, permission holder and trading companies [member] | CCEE [member] | 2021 [member]
TradeAndOtherReceivablesLineItems [Line Items]
Trade Accounts Receivable	119,665
Concessionaires, permission holder and trading companies [member] | Energy suplies [member]
TradeAndOtherReceivablesLineItems [Line Items]
Trade Accounts Receivable	1,089,287	666,667
Concessionaires, permission holder and trading companies [member] | Energy suplies [member] | Balance falling due [member]
TradeAndOtherReceivablesLineItems [Line Items]
Trade Accounts Receivable	960,945
Concessionaires, permission holder and trading companies [member] | Energy suplies [member] | Overdue up to 90 days [member]
TradeAndOtherReceivablesLineItems [Line Items]
Trade Accounts Receivable	1,808
Concessionaires, permission holder and trading companies [member] | Energy suplies [member] | 2021 [member]
TradeAndOtherReceivablesLineItems [Line Items]
Trade Accounts Receivable	126,534
Concessionaires, permission holder and trading companies [member] | Charges from using transmission grid [member]
TradeAndOtherReceivablesLineItems [Line Items]
Trade Accounts Receivable	281,508	215,582
Concessionaires, permission holder and trading companies [member] | Charges from using transmission grid [member] | Balance falling due [member]
TradeAndOtherReceivablesLineItems [Line Items]
Trade Accounts Receivable	271,008
Concessionaires, permission holder and trading companies [member] | Charges from using transmission grid [member] | Overdue up to 90 days [member]
TradeAndOtherReceivablesLineItems [Line Items]
Trade Accounts Receivable	1,396
Concessionaires, permission holder and trading companies [member] | Charges from using transmission grid [member] | 2021 [member]
TradeAndOtherReceivablesLineItems [Line Items]
Trade Accounts Receivable	9,104
Telecommunications [member]
TradeAndOtherReceivablesLineItems [Line Items]
Trade Accounts Receivable		67,304
Telecommunications [member] | Balance falling due [member]
TradeAndOtherReceivablesLineItems [Line Items]
Trade Accounts Receivable
Telecommunications [member] | Overdue up to 90 days [member]
TradeAndOtherReceivablesLineItems [Line Items]
Trade Accounts Receivable
Telecommunications [member] | 2021 [member]
TradeAndOtherReceivablesLineItems [Line Items]
Trade Accounts Receivable
Gas Distribution [member]
TradeAndOtherReceivablesLineItems [Line Items]
Trade Accounts Receivable	70,928	111,026
Gas Distribution [member] | Balance falling due [member]
TradeAndOtherReceivablesLineItems [Line Items]
Trade Accounts Receivable	56,862
Gas Distribution [member] | Overdue up to 90 days [member]
TradeAndOtherReceivablesLineItems [Line Items]
Trade Accounts Receivable	1,342
Gas Distribution [member] | 2021 [member]
TradeAndOtherReceivablesLineItems [Line Items]
Trade Accounts Receivable	12,724
Expected credit losses [member]
TradeAndOtherReceivablesLineItems [Line Items]
Trade Accounts Receivable	(365,551)	R$ 376756
Expected credit losses [member] | Balance falling due [member]
TradeAndOtherReceivablesLineItems [Line Items]
Trade Accounts Receivable	(7,610)
Expected credit losses [member] | Overdue up to 90 days [member]
TradeAndOtherReceivablesLineItems [Line Items]
Trade Accounts Receivable	(11,964)
Expected credit losses [member] | 2021 [member]
TradeAndOtherReceivablesLineItems [Line Items]
Trade Accounts Receivable	R$ 345977

7 Trade Accounts Receivable (_2

7 Trade Accounts Receivable (Details 1) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
TradeAndOtherReceivablesLineItems [Line Items]
Allowance for doubtful accounts, beginning	R$ 376756	R$ 331388
Additions / (Reversals)	127,896	162,477
Reversal or write offs	(136,603)	(117,109)
Reclassification	(2,498)
Allowance for doubtful accounts, ending	365,551	376,756
Customers [member]
TradeAndOtherReceivablesLineItems [Line Items]
Allowance for doubtful accounts, beginning	218,989	186,258
Additions / (Reversals)	123,657	136,514
Reversal or write offs	(129,550)	(103,783)
Reclassification
Allowance for doubtful accounts, ending	213,096	218,989
Customers [member] | Residential [member]
TradeAndOtherReceivablesLineItems [Line Items]
Allowance for doubtful accounts, beginning	41,824	21,722
Additions / (Reversals)	65,937	71,794
Reversal or write offs	(60,365)	(51,692)
Reclassification
Allowance for doubtful accounts, ending	47,396	41,824
Customers [member] | Industrial [member]
TradeAndOtherReceivablesLineItems [Line Items]
Allowance for doubtful accounts, beginning	97,954	87,197
Additions / (Reversals)	22,487	33,772
Reversal or write offs	(31,575)	(23,015)
Reclassification
Allowance for doubtful accounts, ending	88,866	97,954
Customers [member] | Commercial [member]
TradeAndOtherReceivablesLineItems [Line Items]
Allowance for doubtful accounts, beginning	70,925	69,717
Additions / (Reversals)	29,092	27,866
Reversal or write offs	(31,294)	(26,658)
Reclassification
Allowance for doubtful accounts, ending	68,723	70,925
Customers [member] | Rural [member]
TradeAndOtherReceivablesLineItems [Line Items]
Allowance for doubtful accounts, beginning	3,389	3,810
Additions / (Reversals)	4,788	1,499
Reversal or write offs	(4,240)	(1,920)
Reclassification
Allowance for doubtful accounts, ending	3,937	3,389
Customers [member] | Public entities [member]
TradeAndOtherReceivablesLineItems [Line Items]
Allowance for doubtful accounts, beginning	4,890	4,874
Additions / (Reversals)	9	435
Reversal or write offs	(1,815)	(419)
Reclassification
Allowance for doubtful accounts, ending	3,084	4,890
Customers [member] | Public lighting [member]
TradeAndOtherReceivablesLineItems [Line Items]
Allowance for doubtful accounts, beginning	3	120
Additions / (Reversals)	20	(117)
Reversal or write offs	(15)
Reclassification
Allowance for doubtful accounts, ending	8	3
Customers [member] | Public service [member]
TradeAndOtherReceivablesLineItems [Line Items]
Allowance for doubtful accounts, beginning	265	199
Additions / (Reversals)	124	145
Reversal or write offs	(246)	(79)
Reclassification
Allowance for doubtful accounts, ending	143	265
Customers [member] | Unbilled - captives [member]
TradeAndOtherReceivablesLineItems [Line Items]
Allowance for doubtful accounts, beginning	1,180	1,502
Additions / (Reversals)	409	(322)
Reversal or write offs
Reclassification
Allowance for doubtful accounts, ending	1,589	1,180
Customers [member] | Adjustment to present value [member]
TradeAndOtherReceivablesLineItems [Line Items]
Allowance for doubtful accounts, beginning	(1,441)	(2,883)
Additions / (Reversals)	791	1,442
Reversal or write offs
Reclassification
Allowance for doubtful accounts, ending	(650)	(1,441)
Concessionaires, permission holder and trading companies [member]
TradeAndOtherReceivablesLineItems [Line Items]
Allowance for doubtful accounts, beginning	140,090	129,139
Additions / (Reversals)	392	11,608
Reversal or write offs	(284)	(657)
Reclassification
Allowance for doubtful accounts, ending	140,198	140,090
Concessionaires, permission holder and trading companies [member] | CCEE [member]
TradeAndOtherReceivablesLineItems [Line Items]
Allowance for doubtful accounts, beginning	119,665	119,665
Additions / (Reversals)
Reversal or write offs
Reclassification
Allowance for doubtful accounts, ending	119,665	119,665
Concessionaires, permission holder and trading companies [member] | Concessionaires, permission holder and trading companies [member]
TradeAndOtherReceivablesLineItems [Line Items]
Allowance for doubtful accounts, beginning	20,425	9,474
Additions / (Reversals)	392	11,608
Reversal or write offs	(284)	(657)
Reclassification
Allowance for doubtful accounts, ending	20,533	20,425
Telecommunications [member]
TradeAndOtherReceivablesLineItems [Line Items]
Allowance for doubtful accounts, beginning	5,149	3,879
Additions / (Reversals)	3,609	13,292
Reversal or write offs	(6,260)	(12,022)
Reclassification	(2,498)
Allowance for doubtful accounts, ending		5,149
Gas Distribution [member]
TradeAndOtherReceivablesLineItems [Line Items]
Allowance for doubtful accounts, beginning	12,528	12,112
Additions / (Reversals)	238	1,063
Reversal or write offs	(509)	(647)
Reclassification
Allowance for doubtful accounts, ending	R$ 12257	R$ 12528

7 Trade Accounts Receivable (_3

7 Trade Accounts Receivable (Details Narrative) R$ in Thousands	12 Months Ended
	Dec. 31, 2020BRL (R$)
Disclosure of subsidiaries [line items]
Total amount presented of controversial portion of colider HPP	R$ 119665
Bottom Of Range [member]
Disclosure of subsidiaries [line items]
Discount rate for trade account receivables	0.49%
Top Of Range [member]
Disclosure of subsidiaries [line items]
Discount rate for trade account receivables	2.89%

8 CRC Transferred to the Para_3

8 CRC Transferred to the Parana State Government (Details) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
CRC Transferred To Parana State Government [Abstract]
Changes in CRC, beginning	R$ 1350685	R$ 1445042
Interest	80,788	87,710
Monetary variations	261,176	96,519
Amortizations	(300,025)	(278,586)
Changes in CRC, ending	1,392,624	1,350,685
Changes in CRC, current	287,789	219,236
Changes in CRC, noncurrent	R$ 1104835	R$ 1131449

8 CRC Transferred to the Para_4

8 CRC Transferred to the Parana State Government (Details 1) - BRL (R$) R$ in Thousands	Dec. 31, 2020	Dec. 31, 2019
DisclosureOfChangesInCrcLineItems [Line Items]
CRC transferred to the State Government of Parana noncurrent	R$ 1104835	R$ 1131449
2022 [member]
DisclosureOfChangesInCrcLineItems [Line Items]
CRC transferred to the State Government of Parana noncurrent	306,928
2023 [member]
DisclosureOfChangesInCrcLineItems [Line Items]
CRC transferred to the State Government of Parana noncurrent	327,341
2024 [member]
DisclosureOfChangesInCrcLineItems [Line Items]
CRC transferred to the State Government of Parana noncurrent	349,111
2025 [member]
DisclosureOfChangesInCrcLineItems [Line Items]
CRC transferred to the State Government of Parana noncurrent	R$ 121455

8 CRC Transferred to the Para_5

8 CRC Transferred to the Parana State Government (Details Narrative)	12 Months Ended
	Dec. 31, 2020Installment
CRC Transferred To Parana State Government [Abstract]
Discount rate for variation and interest	6.65%
Monthly installments	64

9 Net Sectorial Financial Ass_3

9 Net Sectorial Financial Assets and Liabilities (Details) - BRL (R$) R$ in Thousands	Dec. 31, 2020	Dec. 31, 2019
DisclosureOfNetSectorialFinancialAssetsAndLiabilitiesLineItems [Line Items]
Sectorial financial assets, current	R$ 173465	R$ 355570
Sectorial financial assets, noncurrent	173,465	118,419
Sectorial financial liabilities, current	(188,709)
Sectorial financial liabilities, noncurrent		(102,284)
Electricity rate adjustment recoverable 2021 [member]
DisclosureOfNetSectorialFinancialAssetsAndLiabilitiesLineItems [Line Items]
Sectorial financial assets, current	173,465
Sectorial financial assets, noncurrent	173,465
Electricity rate adjustment recoverable 2021 [member] | Adjusting portion A [member] | Electricity purchased for resale - cva energ [member]
DisclosureOfNetSectorialFinancialAssetsAndLiabilitiesLineItems [Line Items]
Sectorial financial assets, current	(54,864)
Sectorial financial assets, noncurrent	(54,864)
Electricity rate adjustment recoverable 2021 [member] | Adjusting portion A [member] | Electricity purchased for resale - itaipu [member]
DisclosureOfNetSectorialFinancialAssetsAndLiabilitiesLineItems [Line Items]
Sectorial financial assets, current	231,588
Sectorial financial assets, noncurrent	231,588
Electricity rate adjustment recoverable 2021 [member] | Adjusting portion A [member] | Transport of energy using the transmission system - basic grid [member]
DisclosureOfNetSectorialFinancialAssetsAndLiabilitiesLineItems [Line Items]
Sectorial financial assets, current	88,137
Sectorial financial assets, noncurrent	88,137
Electricity rate adjustment recoverable 2021 [member] | Adjusting portion A [member] | Transport of energy purchased from itaipu [member]
DisclosureOfNetSectorialFinancialAssetsAndLiabilitiesLineItems [Line Items]
Sectorial financial assets, current	9,766
Sectorial financial assets, noncurrent	9,766
Electricity rate adjustment recoverable 2021 [member] | Adjusting portion A [member] | System service charges - ESS [member]
DisclosureOfNetSectorialFinancialAssetsAndLiabilitiesLineItems [Line Items]
Sectorial financial assets, current	11,266
Sectorial financial assets, noncurrent	11,266
Electricity rate adjustment recoverable 2021 [member] | Adjusting portion A [member] | Energy development account - CDE [member]
DisclosureOfNetSectorialFinancialAssetsAndLiabilitiesLineItems [Line Items]
Sectorial financial assets, current	(903)
Sectorial financial assets, noncurrent	(903)
Electricity rate adjustment recoverable 2021 [member] | Adjusting portion A [member] | Proinfa [member]
DisclosureOfNetSectorialFinancialAssetsAndLiabilitiesLineItems [Line Items]
Sectorial financial assets, current	(89)
Sectorial financial assets, noncurrent	(89)
Electricity rate adjustment recoverable 2021 [member] | Other financial components [member] | Neutrality [member]
DisclosureOfNetSectorialFinancialAssetsAndLiabilitiesLineItems [Line Items]
Sectorial financial assets, current	27,923
Sectorial financial assets, noncurrent	27,923
Electricity rate adjustment recoverable 2021 [member] | Other financial components [member] | Overcontracting [member]
DisclosureOfNetSectorialFinancialAssetsAndLiabilitiesLineItems [Line Items]
Sectorial financial assets, current	78,836
Sectorial financial assets, noncurrent	78,836
Electricity rate adjustment recoverable 2021 [member] | Other financial components [member] | Hydrological risk [member]
DisclosureOfNetSectorialFinancialAssetsAndLiabilitiesLineItems [Line Items]
Sectorial financial assets, current	(143,147)
Sectorial financial assets, noncurrent	(143,147)
Electricity rate adjustment recoverable 2021 [member] | Other financial components [member] | Tariff refunds [member]
DisclosureOfNetSectorialFinancialAssetsAndLiabilitiesLineItems [Line Items]
Sectorial financial assets, current	(76,144)
Sectorial financial assets, noncurrent	(76,144)
Electricity rate adjustment recoverable 2021 [member] | Other financial components [member] | Other [member]
DisclosureOfNetSectorialFinancialAssetsAndLiabilitiesLineItems [Line Items]
Sectorial financial assets, current	1,096
Sectorial financial assets, noncurrent	1,096
Electricity rate adjustment recoverable 2019 [member]
DisclosureOfNetSectorialFinancialAssetsAndLiabilitiesLineItems [Line Items]
Sectorial financial assets, current		237,150
Sectorial financial assets, noncurrent
Electricity rate adjustment recoverable 2019 [member] | Adjusting portion A [member] | Electricity purchased for resale - cva energ [member]
DisclosureOfNetSectorialFinancialAssetsAndLiabilitiesLineItems [Line Items]
Sectorial financial assets, current		235,192
Sectorial financial assets, noncurrent
Electricity rate adjustment recoverable 2019 [member] | Adjusting portion A [member] | Electricity purchased for resale - itaipu [member]
DisclosureOfNetSectorialFinancialAssetsAndLiabilitiesLineItems [Line Items]
Sectorial financial assets, current		342,647
Sectorial financial assets, noncurrent
Electricity rate adjustment recoverable 2019 [member] | Adjusting portion A [member] | Transport of energy using the transmission system - basic grid [member]
DisclosureOfNetSectorialFinancialAssetsAndLiabilitiesLineItems [Line Items]
Sectorial financial assets, current		(47,214)
Sectorial financial assets, noncurrent
Electricity rate adjustment recoverable 2019 [member] | Adjusting portion A [member] | Transport of energy purchased from itaipu [member]
DisclosureOfNetSectorialFinancialAssetsAndLiabilitiesLineItems [Line Items]
Sectorial financial assets, current		9,937
Sectorial financial assets, noncurrent
Electricity rate adjustment recoverable 2019 [member] | Adjusting portion A [member] | System service charges - ESS [member]
DisclosureOfNetSectorialFinancialAssetsAndLiabilitiesLineItems [Line Items]
Sectorial financial assets, current		(160,277)
Sectorial financial assets, noncurrent
Electricity rate adjustment recoverable 2019 [member] | Adjusting portion A [member] | Energy development account - CDE [member]
DisclosureOfNetSectorialFinancialAssetsAndLiabilitiesLineItems [Line Items]
Sectorial financial assets, current		98,722
Sectorial financial assets, noncurrent
Electricity rate adjustment recoverable 2019 [member] | Adjusting portion A [member] | Proinfa [member]
DisclosureOfNetSectorialFinancialAssetsAndLiabilitiesLineItems [Line Items]
Sectorial financial assets, current		8,528
Sectorial financial assets, noncurrent
Electricity rate adjustment recoverable 2019 [member] | Other financial components [member] | Neutrality [member]
DisclosureOfNetSectorialFinancialAssetsAndLiabilitiesLineItems [Line Items]
Sectorial financial assets, current		29,690
Sectorial financial assets, noncurrent
Electricity rate adjustment recoverable 2019 [member] | Other financial components [member] | Overcontracting [member]
DisclosureOfNetSectorialFinancialAssetsAndLiabilitiesLineItems [Line Items]
Sectorial financial assets, current		(116,673)
Sectorial financial assets, noncurrent
Electricity rate adjustment recoverable 2019 [member] | Other financial components [member] | Hydrological risk [member]
DisclosureOfNetSectorialFinancialAssetsAndLiabilitiesLineItems [Line Items]
Sectorial financial assets, current		(119,416)
Sectorial financial assets, noncurrent
Electricity rate adjustment recoverable 2019 [member] | Other financial components [member] | Tariff refunds [member]
DisclosureOfNetSectorialFinancialAssetsAndLiabilitiesLineItems [Line Items]
Sectorial financial assets, current		(43,538)
Sectorial financial assets, noncurrent
Electricity rate adjustment recoverable 2019 [member] | Other financial components [member] | Other [member]
DisclosureOfNetSectorialFinancialAssetsAndLiabilitiesLineItems [Line Items]
Sectorial financial assets, current		(448)
Sectorial financial assets, noncurrent
Electricity Rate Adjustment Recoverable 2020 [member]
DisclosureOfNetSectorialFinancialAssetsAndLiabilitiesLineItems [Line Items]
Sectorial financial assets, current		118,420
Sectorial financial assets, noncurrent		118,419
Sectorial financial liabilities, current	(188,709)
Sectorial financial liabilities, noncurrent
Electricity Rate Adjustment Recoverable 2020 [member] | Adjusting portion A [member] | Electricity purchased for resale - cva energ [member]
DisclosureOfNetSectorialFinancialAssetsAndLiabilitiesLineItems [Line Items]
Sectorial financial assets, current		15,298
Sectorial financial assets, noncurrent		15,298
Sectorial financial liabilities, current	9,675
Sectorial financial liabilities, noncurrent
Electricity Rate Adjustment Recoverable 2020 [member] | Adjusting portion A [member] | Electricity purchased for resale - itaipu [member]
DisclosureOfNetSectorialFinancialAssetsAndLiabilitiesLineItems [Line Items]
Sectorial financial assets, current		225,340
Sectorial financial assets, noncurrent		225,340
Electricity Rate Adjustment Recoverable 2020 [member] | Adjusting portion A [member] | Transport of energy using the transmission system - basic grid [member]
DisclosureOfNetSectorialFinancialAssetsAndLiabilitiesLineItems [Line Items]
Sectorial financial assets, current		30,126
Sectorial financial assets, noncurrent		30,126
Sectorial financial liabilities, current	(603)
Sectorial financial liabilities, noncurrent
Electricity Rate Adjustment Recoverable 2020 [member] | Adjusting portion A [member] | Transport of energy purchased from itaipu [member]
DisclosureOfNetSectorialFinancialAssetsAndLiabilitiesLineItems [Line Items]
Sectorial financial assets, current		7,227
Sectorial financial assets, noncurrent		7,227
Sectorial financial liabilities, current	214
Sectorial financial liabilities, noncurrent
Electricity Rate Adjustment Recoverable 2020 [member] | Adjusting portion A [member] | System service charges - ESS [member]
DisclosureOfNetSectorialFinancialAssetsAndLiabilitiesLineItems [Line Items]
Sectorial financial assets, current		(52,336)
Sectorial financial assets, noncurrent		(52,336)
Sectorial financial liabilities, current	(3,401)
Sectorial financial liabilities, noncurrent
Electricity Rate Adjustment Recoverable 2020 [member] | Adjusting portion A [member] | Energy development account - CDE [member]
DisclosureOfNetSectorialFinancialAssetsAndLiabilitiesLineItems [Line Items]
Sectorial financial assets, current		27,103
Sectorial financial assets, noncurrent		27,103
Sectorial financial liabilities, current	(66)
Sectorial financial liabilities, noncurrent
Electricity Rate Adjustment Recoverable 2020 [member] | Adjusting portion A [member] | Proinfa [member]
DisclosureOfNetSectorialFinancialAssetsAndLiabilitiesLineItems [Line Items]
Sectorial financial assets, current		(30)
Sectorial financial assets, noncurrent		(30)
Sectorial financial liabilities, current	33
Sectorial financial liabilities, noncurrent
Electricity Rate Adjustment Recoverable 2020 [member] | Other financial components [member] | Neutrality [member]
DisclosureOfNetSectorialFinancialAssetsAndLiabilitiesLineItems [Line Items]
Sectorial financial assets, current		9,408
Sectorial financial assets, noncurrent		9,408
Sectorial financial liabilities, current	21,419
Sectorial financial liabilities, noncurrent
Electricity Rate Adjustment Recoverable 2020 [member] | Other financial components [member] | Overcontracting [member]
DisclosureOfNetSectorialFinancialAssetsAndLiabilitiesLineItems [Line Items]
Sectorial financial assets, current		(25,725)
Sectorial financial assets, noncurrent		(25,725)
Sectorial financial liabilities, current	(26,995)
Sectorial financial liabilities, noncurrent
Electricity Rate Adjustment Recoverable 2020 [member] | Other financial components [member] | Hydrological risk [member]
DisclosureOfNetSectorialFinancialAssetsAndLiabilitiesLineItems [Line Items]
Sectorial financial assets, current		(113,872)
Sectorial financial assets, noncurrent		(113,872)
Sectorial financial liabilities, current	(187,817)
Sectorial financial liabilities, noncurrent
Electricity Rate Adjustment Recoverable 2020 [member] | Other financial components [member] | Tariff refunds [member]
DisclosureOfNetSectorialFinancialAssetsAndLiabilitiesLineItems [Line Items]
Sectorial financial assets, current		(24,215)
Sectorial financial assets, noncurrent		(24,216)
Sectorial financial liabilities, current	(41,381)
Sectorial financial liabilities, noncurrent
Electricity Rate Adjustment Recoverable 2020 [member] | Other financial components [member] | Other [member]
DisclosureOfNetSectorialFinancialAssetsAndLiabilitiesLineItems [Line Items]
Sectorial financial liabilities, current	2,612
Sectorial financial liabilities, noncurrent
Electricity Rate Adjustment Recoverable 2020 [member] | Other financial components [member] | Offset of energy surplus/deficit under CCEAR bilateral contracts [member]
DisclosureOfNetSectorialFinancialAssetsAndLiabilitiesLineItems [Line Items]
Sectorial financial assets, current		20,096
Sectorial financial assets, noncurrent		20,096
Sectorial financial liabilities, current	36,395
Sectorial financial liabilities, noncurrent
Tariff review 2021 [member]
DisclosureOfNetSectorialFinancialAssetsAndLiabilitiesLineItems [Line Items]
Sectorial financial liabilities, current	(188,709)
Sectorial financial liabilities, noncurrent		(96,531)
Tariff review 2021 [member] | Financial components [member]
DisclosureOfNetSectorialFinancialAssetsAndLiabilitiesLineItems [Line Items]
Sectorial financial liabilities, current
Sectorial financial liabilities, noncurrent		(102,284)
Tariff review 2021 [member] | Financial components [member] | Tariff refunds [member]
DisclosureOfNetSectorialFinancialAssetsAndLiabilitiesLineItems [Line Items]
Sectorial financial liabilities, current
Sectorial financial liabilities, noncurrent		R$ 102284

9 Net Sectorial Financial Ass_4

9 Net Sectorial Financial Assets and Liabilities (Details 1) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Disclosure of financial assets [line items]
Net sectorial financial assets and liabilities, beginning	R$ 371705	R$ 582288
Operating revenues, constitution	836,048	515,934
Operating revenues, amortization	(89,996)	(490,877)
Financial results, updating	20,106	41,625
Write-offs Covid Account	(869,516)
Rate flags	(110,126)	(277,265)
Net sectorial financial assets and liabilities, ending	158,221	371,705
Sectorial financial assets, current	173,465	355,570
Sectorial financial assets, noncurrent	173,465	118,419
Sectorial financial liabilities, current	(188,709)
Sectorial financial liabilities, noncurrent		(102,284)
Adjusting portion A [member] | Electricity purchased for resale - itaipu [member]
Disclosure of financial assets [line items]
Net sectorial financial assets and liabilities, beginning	793,327	886,243
Operating revenues, constitution	893,581	533,057
Operating revenues, amortization	(354,300)	(670,501)
Financial results, updating	28,197	44,528
Write-offs Covid Account	(897,629)
Rate flags
Net sectorial financial assets and liabilities, ending	463,176	793,327
Adjusting portion A [member] | Electricity purchased for resale - cva energ [member]
Disclosure of financial assets [line items]
Net sectorial financial assets and liabilities, beginning	265,788	626,891
Operating revenues, constitution	(242,246)	358,200
Operating revenues, amortization	(253,482)	(546,801)
Financial results, updating	1,076	29,909
Write-offs Covid Account	164,804
Rate flags	(35,993)	(202,411)
Net sectorial financial assets and liabilities, ending	(100,053)	265,788
Adjusting portion A [member] | Transport of energy using the transmission system - basic grid [member]
Disclosure of financial assets [line items]
Net sectorial financial assets and liabilities, beginning	13,038	(30,514)
Operating revenues, constitution	265,030	22,917
Operating revenues, amortization	48,154	23,688
Financial results, updating	1,715	(3,053)
Write-offs Covid Account	(151,060)
Rate flags
Net sectorial financial assets and liabilities, ending	176,877	13,038
Adjusting portion A [member] | Transport of energy purchased from itaipu [member]
Disclosure of financial assets [line items]
Net sectorial financial assets and liabilities, beginning	24,391	23,250
Operating revenues, constitution	31,762	19,531
Operating revenues, amortization	(10,503)	(19,692)
Financial results, updating	801	1,302
Write-offs Covid Account	(26,705)
Rate flags
Net sectorial financial assets and liabilities, ending	19,746	24,391
Adjusting portion A [member] | System service charges - ESS [member]
Disclosure of financial assets [line items]
Net sectorial financial assets and liabilities, beginning	(264,949)	(481,972)
Operating revenues, constitution	(72,032)	(188,280)
Operating revenues, amortization	169,396	427,177
Financial results, updating	(8,854)	(21,874)
Write-offs Covid Account	249,724
Rate flags	(54,154)
Net sectorial financial assets and liabilities, ending	19,131	(264,949)
Adjusting portion A [member] | Energy development account - CDE [member]
Disclosure of financial assets [line items]
Net sectorial financial assets and liabilities, beginning	152,928	159,084
Operating revenues, constitution	56,608	110,752
Operating revenues, amortization	(102,027)	(127,190)
Financial results, updating	5,065	10,282
Write-offs Covid Account	(114,446)
Rate flags
Net sectorial financial assets and liabilities, ending	(1,872)	152,928
Adjusting portion A [member] | Proinfa [member]
Disclosure of financial assets [line items]
Net sectorial financial assets and liabilities, beginning	8,468	2,989
Operating revenues, constitution	(21,615)	17,396
Operating revenues, amortization	(8,856)	(12,636)
Financial results, updating	(181)	719
Write-offs Covid Account	22,039
Rate flags
Net sectorial financial assets and liabilities, ending	(145)	8,468
Other financial components [member] | Neutrality [member]
Disclosure of financial assets [line items]
Net sectorial financial assets and liabilities, beginning	48,506	123,028
Operating revenues, constitution	95,870	(1,122)
Operating revenues, amortization	(52,843)	(74,698)
Financial results, updating	187	1,298
Write-offs Covid Account	(14,455)
Rate flags
Net sectorial financial assets and liabilities, ending	77,265	48,506
Other financial components [member] | Offset of energy surplus/deficit under CCEAR bilateral contracts [member]
Disclosure of financial assets [line items]
Net sectorial financial assets and liabilities, beginning	40,192	5,237
Operating revenues, constitution	75,917	80,385
Operating revenues, amortization	(79,714)	(45,430)
Financial results, updating
Write-offs Covid Account
Rate flags
Net sectorial financial assets and liabilities, ending	36,395	40,192
Other financial components [member] | CVA angra III adjustment [member]
Disclosure of financial assets [line items]
Net sectorial financial assets and liabilities, beginning		6,272
Operating revenues, constitution
Operating revenues, amortization		(6,272)
Financial results, updating
Rate flags
Net sectorial financial assets and liabilities, ending
Other financial components [member] | Hydrological risk [member]
Disclosure of financial assets [line items]
Net sectorial financial assets and liabilities, beginning	(347,160)	(319,033)
Operating revenues, constitution	(444,291)	(324,504)
Operating revenues, amortization	322,432	304,197
Financial results, updating	(5,092)	(7,820)
Write-offs Covid Account
Rate flags
Net sectorial financial assets and liabilities, ending	(474,111)	(347,160)
Other financial components [member] | Tariff refunds [member]
Disclosure of financial assets [line items]
Net sectorial financial assets and liabilities, beginning	(194,253)	(180,963)
Operating revenues, constitution	(83,514)	(89,327)
Operating revenues, amortization	88,269	83,900
Financial results, updating	(4,171)	(7,863)
Write-offs Covid Account
Rate flags
Net sectorial financial assets and liabilities, ending	(193,669)	(194,253)
Other financial components [member] | Overcontracting [member]
Disclosure of financial assets [line items]
Net sectorial financial assets and liabilities, beginning	(168,123)	(238,416)
Operating revenues, constitution	274,051	(22,166)
Operating revenues, amortization	145,853	173,087
Financial results, updating	663	(5,774)
Write-offs Covid Account	(101,788)
Rate flags	(19,979)	(74,854)
Net sectorial financial assets and liabilities, ending	130,677	(168,123)
Other financial components [member] | Others [member]
Disclosure of financial assets [line items]
Net sectorial financial assets and liabilities, beginning	(448)	192
Operating revenues, constitution	6,927	(905)
Operating revenues, amortization	(2,375)	294
Financial results, updating	700	(29)
Write-offs Covid Account
Rate flags
Net sectorial financial assets and liabilities, ending	R$ 4804	R$ 448

10 Accounts Receivables - Con_2

10 Accounts Receivables - Concessions (Details) - BRL (R$) R$ in Thousands	Dec. 31, 2020	Dec. 31, 2019	Jan. 02, 2019	Dec. 31, 2018
Accounts Receivable Concessions [Line Items]
Accounts receivable related to the concession	R$ 1902340	R$ 1878369	R$ 1796865
Accounts receivable related to the concession, current	4,515
Accounts receivable related to the concession, noncurrent	1,897,825
Restated [Member]
Accounts Receivable Concessions [Line Items]
Accounts receivable related to the concession			65,811
Accounts receivable related to the concession, current		4,545		R$ 4180
Accounts receivable related to the concession, noncurrent		1,873,824		R$ 1792685
Power distribution service concession [member]
Accounts Receivable Concessions [Line Items]
Accounts receivable related to the concession	960,518
Power distribution service concession [member] | Restated [Member]
Accounts Receivable Concessions [Line Items]
Accounts receivable related to the concession		836,818	783,023
Piped gas distribution service concession [member]
Accounts Receivable Concessions [Line Items]
Accounts receivable related to the concession	189,416
Piped gas distribution service concession [member] | Restated [Member]
Accounts Receivable Concessions [Line Items]
Accounts receivable related to the concession		324,385	322,259
Bonus from the grant of concession agreements under the quota system [member]
Accounts Receivable Concessions [Line Items]
Accounts receivable related to the concession	671,204
Bonus from the grant of concession agreements under the quota system [member] | Restated [Member]
Accounts Receivable Concessions [Line Items]
Accounts receivable related to the concession		647,984	R$ 625772
Generation concession agreements [member]
Accounts Receivable Concessions [Line Items]
Accounts receivable related to the concession	R$ 81202
Generation concession agreements [member] | Restated [Member]
Accounts Receivable Concessions [Line Items]
Accounts receivable related to the concession		R$ 69182

10 Accounts Receivables - Con_3

10 Accounts Receivables - Concessions (Details 1) - Power distribution service concession [member] - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Accounts Receivable Concessions [Line Items]
Balance at beginning	R$ 836818	R$ 783023
Transfers from contract assets	86,154	28,987
Transfers from investments	(99)	348
Transfers to other receivables (assets held for disposal)	(7,428)	(1,578)
Fair value recognition	45,187	26,231
Incorporations		(75)
Loss on disposal	(114)	(118)
Balance at ending	R$ 960518	R$ 836818

10 Accounts Receivables - Con_4

10 Accounts Receivables - Concessions (Details 2) - Piped gas distribution service concession [member] - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Accounts Receivable Concessions [Line Items]
Concession agreement - gas distribution, beginning	R$ 324385	R$ 322259
Transfers from contract assets	7,390	16,574
Transfers to intangible assets		(24,835)
Transfers to intangible assets	(154,483)
Fair value recognition	12,154	10,415
Loss on disposal	(30)	(28)
Concession agreement - gas distribution, ending	R$ 189416	R$ 324385

10 Accounts Receivables - Con_5

10 Accounts Receivables - Concessions (Details 3) - Bonus from the grant of concession agreements under the quota system [member] - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Accounts Receivable Concessions [Line Items]
Bonus from the grant, beginning	R$ 647984	R$ 625772
Transfers to electricity grid use charges - customers	(71,087)	(69,192)
Interest	94,307	91,404
Bonus from the grant, ending	R$ 671204	R$ 647984

10 Accounts Receivables - Con_6

10 Accounts Receivables - Concessions (Details 4) - Generation concession agreements [member] - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Accounts Receivable Concessions [Line Items]
Power generation concession contract at beginning	R$ 69182	R$ 65811
Gain on remeasurement of the cash flow	1,518	426
Reversal of impairment	10,502	2,945
Power generation concession contract at ending	R$ 81202	R$ 69182

10 Accounts Receivables - Con_7

10 Accounts Receivables - Concessions (Details Narrative) - Concession Agreement [member] - HPP GPS [member] - Bonus from the grant of concession agreements under the quota system [member] R$ in Thousands	Jan. 05, 2016BRL (R$)
Accounts Receivable Concessions [Line Items]
Concession agreement term	P30Y
Bonus paid	R$ 574827
Description of proportion of electric energy sold	70% of the power in the ACR and 30% in the free environment - ACL.

11 Contract assets (Details)

11 Contract assets (Details) - BRL (R$) R$ in Thousands	Dec. 31, 2020	Dec. 31, 2019	Jan. 02, 2019	Dec. 31, 2018
SummaryOfContractAssetsLineItems [Line Items]
Contract Assets	R$ 5492797	R$ 4790653	R$ 4187056
Current	285,682
Noncurrent	5,207,115
Restated [Member]
SummaryOfContractAssetsLineItems [Line Items]
Current		161,740		R$ 134016
Noncurrent		4,628,913		4,053,040
Power distribution service concession [member]
SummaryOfContractAssetsLineItems [Line Items]
Contract Assets	1,114,961	844,284	640,500	640,500
Piped gas distribution service concession [member]
SummaryOfContractAssetsLineItems [Line Items]
Contract Assets	27,254	26,734	25,718	25,718
Power Transmission Concession [member]
SummaryOfContractAssetsLineItems [Line Items]
Contract Assets	R$ 4350582	R$ 3919635	R$ 3520838	R$ 3520838

11 Contract assets (Details 1)

11 Contract assets (Details 1) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
SummaryOfContractAssetsLineItems [Line Items]
Contract assets, beginning	R$ 4790653
Transfers to intangible assets	52,811
Loss on disposal	(35,590)
Contract assets, ending	5,492,797	R$ 4790653
Power distribution service concession [member]
SummaryOfContractAssetsLineItems [Line Items]
Contract assets, beginning	844,284	640,500
Acquisitions	1,391,267	1,021,644
Customers contributions	(112,689)	104,067
Provision for legal claims added to the cost of the works	1,522	1,823
Transfers to intangible assets	(911,366)	(678,680)
Transfers to accounts receivable related to concession	(86,154)	(28,987)
Loss on disposal	(11,903)	(7,949)
Contract assets, ending	1,114,961	844,284
Power distribution service concession [member] | Assets [member]
SummaryOfContractAssetsLineItems [Line Items]
Contract assets, beginning	875,354	664,755
Acquisitions	1,391,267	1,021,644
Provision for legal claims added to the cost of the works	1,522	1,823
Transfers to intangible assets	(1,016,482)	(771,844)
Transfers to accounts receivable related to concession	(94,978)	(33,075)
Loss on disposal	(11,903)	(7,949)
Contract assets, ending	1,144,780	875,354
Power distribution service concession [member] | Special Liabilities [member]
SummaryOfContractAssetsLineItems [Line Items]
Contract assets, beginning	(31,070)	(24,255)
Acquisitions
Customers contributions	(112,689)	(104,067)
Transfers to intangible assets	105,116	93,164
Transfers to accounts receivable related to concession	8,824	4,088
Contract assets, ending	(31,070)	(31,070)
Piped gas distribution service concession [member]
SummaryOfContractAssetsLineItems [Line Items]
Contract assets, beginning	26,734	25,718
Acquisitions	15,187	17,590
Transfers to intangible assets	(7,277)
Transfers to accounts receivable related to concession	(7,390)	(16,574)
Contract assets, ending	27,254	26,734
Power Transmission Concession [member]
SummaryOfContractAssetsLineItems [Line Items]
Contract assets, beginning	3,919,635	3,520,838
Business combinations effects		117,942
Realization of gains/losses in business combinations	722	282
Transfers to electricity grid use charges - customers	(578,147)	(391,060)
Transfers to property, plant and equipment	(613)	(3,353)
Transfers from litigations	(576)	(313)
Remuneration	781,107	458,591
Construction revenue	255,578	175,219
Construction income	4,217	2,892
Loss from inefficiency	(7,654)	38,597
Write-offs	(23,687)
Contract assets, ending	4,350,582	3,919,635
Power Transmission Concession [member] | Concession Assets [member]
SummaryOfContractAssetsLineItems [Line Items]
Contract assets, beginning	2,601,929	2,166,757
Business combinations effects		117,942
Realization of gains/losses in business combinations	722	282
Transfers to electricity grid use charges - customers	(312,120)	(176,724)
Transfers to property, plant and equipment	(613)	(3,353)
Transfers from litigations	(576)	(313)
Remuneration	489,438	280,630
Construction revenue	255,578	175,219
Construction income	4,217	2,892
Loss from inefficiency	(7,654)	38,597
Write-offs	(23,687)
Contract assets, ending	3,007,234	2,601,929
Power Transmission Concession [member] | RBSE Assets [member]
SummaryOfContractAssetsLineItems [Line Items]
Contract assets, beginning	1,317,706	1,354,081
Transfers to electricity grid use charges - customers	(266,027)	(214,336)
Remuneration	291,669	177,961
Contract assets, ending	R$ 1343348	R$ 1317706

11 Contract assets (Details 2)

11 Contract assets (Details 2) R$ in Thousands	12 Months Ended
	Dec. 31, 2020BRL (R$)
RBSE Assets [member]
ContractAssetsLineItems [Line Items]
Construction income	1.65%
Operating and maintenance margin	1.65%
Remuneration rate	9.58%	[1]
Contract correction index	IPCA	[2]
Annual RAP, according to Homologatory Resolution	R$ 415455
Construction cost incurred up to 12.31.2020 of works in progress Contract 006/2016 - TL 525 kV Curitiba Leste - Blumenau	R$ 238233
Concession Assets [member]
ContractAssetsLineItems [Line Items]
Remuneration rate	9.54%	[1]
Contract correction index	IPCA
Annual RAP, according to Homologatory Resolution	R$ 279406
[1]	Average rate of contracts.
[2]	Contract 075/2001 - LT 230 kV Bateias - Jaguariaiva, from Copel GET, and contract 002/2005 - LT 525 kV Ivaipora - Londrina, from Uirapuru, are adjusted by the IGPM

11 Contract assets (Details Nar

11 Contract assets (Details Narrative) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
ContractAssetsLineItems [Line Items]
Costs of borrowings, financing and debentures capitalized	R$ 9537	R$ 6838	R$ 5435
Percentage of average rate	0.38%	0.28%	0.26%
RBSE Assets [member]
ContractAssetsLineItems [Line Items]
Impact of the tariff review	R$ 122027

12 Other Receivables (Details)

12 Other Receivables (Details) - BRL (R$) R$ in Thousands		Dec. 31, 2020	Dec. 31, 2019
Disclosure of fair value measurement of assets [line items]
Other receivables		R$ 1359645	R$ 1088624
Other current receivables		514,185	426,865
Other noncurrent receivables		845,460	661,759
Fair Value Purchase And Sale Of Power In The Active Market [member]
Disclosure of fair value measurement of assets [line items]
Other receivables		689,531	460,635
Services In Progress [member]
Disclosure of fair value measurement of assets [line items]
Other receivables	[1]	260,348	228,593
Credits On Sales And Purchases Of Gas [member]
Disclosure of fair value measurement of assets [line items]
Other receivables		120,515	142,941
CDE Transfer [member]
Disclosure of fair value measurement of assets [line items]
Other receivables		60,433	61,898
Advance Payments To Suppliers [member]
Disclosure of fair value measurement of assets [line items]
Other receivables	[2]	36,609	24,073
Advance Payments To Employees [member]
Disclosure of fair value measurement of assets [line items]
Other receivables		17,785	20,427
Derivatives fair value - forward contract [member]
Disclosure of fair value measurement of assets [line items]
Other receivables		23,308
Decommissioning In Progress [member]
Disclosure of fair value measurement of assets [line items]
Other receivables		36,855	21,238
Advance For Severance Estate [member]
Disclosure of fair value measurement of assets [line items]
Other receivables		14,484	15,597
Tariff Flag [member]
Disclosure of fair value measurement of assets [line items]
Other receivables		7,194	19,545
Insurance entities [member]
Disclosure of fair value measurement of assets [line items]
Other receivables			24,574
Other receivables [member]
Disclosure of fair value measurement of assets [line items]
Other receivables		R$ 92583	R$ 69103
[1]	This item refers to services currently in progress within the Company, most of which are related to the Research and Development and Energy Efficiency programs, which upon conclusion are offset against the respective liability recorded for this purpose.
[2]	Advances to suppliers provided on contractual clauses.

12 Other Receivables (Details N

12 Other Receivables (Details Narrative) - BRL (R$) R$ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2020	Dec. 31, 2020
CDE Transfer [member]
Disclosure of fair value measurement of assets [line items]
CDE Transfer amount (per month)	R$ 47005	R$ 51200

13 Taxes (Details)

13 Taxes (Details) - BRL (R$) R$ in Thousands		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
DisclosureOfChangesInDeferredIncomeTaxAndSocialContributionLineItems [Line Items]
Noncurrent assets, beginning		R$ 2068337	R$ 2047358
Noncurrent assets, recognized in income		189,724	(48,702)
Noncurrent assets, business combination effect		(81,971)	6,237
Noncurrent assets, recognized comprehensive income		92,190	63,444
Noncurrent assets, ending		2,268,280	2,068,337
Noncurrent liabilities, beginning		1,350,137	1,197,717
Noncurrent liabilities, recognized in income		214,620	153,446
Noncurrent liabilities, reclassification		(3,243)
Noncurrent liabilities, business combination effect			(1,026)
Noncurrent liabilities, recognized comprehensive income
Noncurrent liabilities, ending		1,561,514	1,350,137
Net, beginning		718,200	849,641
Net, recognized in income		(24,896)	(202,148)
Net, reclassification		(78,728)
Net, business combination effect			7,263
Net, recognized comprehensive income		92,190	63,444
Net, ending		706,766	718,200
Assets presented in the Statement of Financial Position		1,191,104	1,011,866	R$ 1007061
Liabilities presented in the Statement of Financial Position		484,338	293,666	R$ 157420
Provisions for Legal Claims [member]
DisclosureOfChangesInDeferredIncomeTaxAndSocialContributionLineItems [Line Items]
Noncurrent assets, beginning		516,752	573,177
Noncurrent assets, recognized in income		(6,072)	(62,662)
Noncurrent assets, reclassification
Noncurrent assets, business combination effect			6,237
Noncurrent assets, recognized comprehensive income
Noncurrent assets, ending		510,680	516,752
Post Employment Benefits [member]
DisclosureOfChangesInDeferredIncomeTaxAndSocialContributionLineItems [Line Items]
Noncurrent assets, beginning		405,414	328,685
Noncurrent assets, recognized in income		9,433	13,285
Noncurrent assets, reclassification
Noncurrent assets, business combination effect
Noncurrent assets, recognized comprehensive income		92,190	63,444
Noncurrent assets, ending		507,037	405,414
Impairment of Assets [member]
DisclosureOfChangesInDeferredIncomeTaxAndSocialContributionLineItems [Line Items]
Noncurrent assets, beginning		385,467	328,011
Noncurrent assets, recognized in income		(63,827)	57,456
Noncurrent assets, reclassification
Noncurrent assets, business combination effect
Noncurrent assets, recognized comprehensive income
Noncurrent assets, ending		321,640	385,467
Research and Development and Energy Efficiency Programs [member]
DisclosureOfChangesInDeferredIncomeTaxAndSocialContributionLineItems [Line Items]
Noncurrent assets, beginning		165,331	154,491
Noncurrent assets, recognized in income		(12,833)	10,840
Noncurrent assets, reclassification
Noncurrent assets, business combination effect
Noncurrent assets, recognized comprehensive income
Noncurrent assets, ending		152,498	165,331
Tax Losses and Negative Tax Basis [member]
DisclosureOfChangesInDeferredIncomeTaxAndSocialContributionLineItems [Line Items]
Noncurrent assets, beginning		98,242	71,140
Noncurrent assets, recognized in income		144,493	27,102
Noncurrent assets, reclassification
Noncurrent assets, business combination effect
Noncurrent assets, recognized comprehensive income
Noncurrent assets, ending		242,735	98,242
Provision for Energy Purchases [member]
DisclosureOfChangesInDeferredIncomeTaxAndSocialContributionLineItems [Line Items]
Noncurrent assets, beginning		18,039	155,570
Noncurrent assets, recognized in income			(137,531)
Noncurrent assets, reclassification
Noncurrent assets, business combination effect
Noncurrent assets, recognized comprehensive income
Noncurrent assets, ending		18,039	18,039
Provision for Performance And Profit Sharing [member]
DisclosureOfChangesInDeferredIncomeTaxAndSocialContributionLineItems [Line Items]
Noncurrent assets, beginning		52,115	30,548
Noncurrent assets, recognized in income		109,622	21,567
Noncurrent assets, reclassification
Noncurrent assets, business combination effect
Noncurrent assets, recognized comprehensive income
Noncurrent assets, ending		161,737	52,115
Amortization - concession [member]
DisclosureOfChangesInDeferredIncomeTaxAndSocialContributionLineItems [Line Items]
Noncurrent assets, beginning		58,344	53,339
Noncurrent assets, recognized in income		(11,135)	5,005
Noncurrent assets, reclassification
Noncurrent assets, business combination effect
Noncurrent assets, recognized comprehensive income
Noncurrent assets, ending		47,209	58,344
Concession Contracts [member]
DisclosureOfChangesInDeferredIncomeTaxAndSocialContributionLineItems [Line Items]
Noncurrent assets, beginning		22,353	23,606
Noncurrent assets, recognized in income		(1,292)	(1,253)
Noncurrent assets, reclassification
Noncurrent assets, business combination effect
Noncurrent assets, recognized comprehensive income
Noncurrent assets, ending		21,061	22,353
Noncurrent liabilities, beginning		711,831	613,658
Noncurrent liabilities, recognized in income		188,674	99,199
Noncurrent liabilities, reclassification
Noncurrent liabilities, business combination effect			(1,026)
Noncurrent liabilities, recognized comprehensive income
Noncurrent liabilities, ending		900,505	711,831
Reclassification [member]
DisclosureOfChangesInDeferredIncomeTaxAndSocialContributionLineItems [Line Items]
Noncurrent assets, beginning	[1]
Noncurrent assets, recognized in income	[1]	(1,771)
Noncurrent assets, reclassification	[1]	(81,971)
Noncurrent assets, recognized comprehensive income	[1]
Noncurrent assets, ending	[1]	(83,742)
Noncurrent liabilities, beginning	[1]
Noncurrent liabilities, recognized in income	[1]	478
Noncurrent liabilities, reclassification	[1]	(3,243)
Noncurrent liabilities, recognized comprehensive income	[1]
Noncurrent liabilities, ending	[1]	(2,765)
Expected Credit Losses [member]
DisclosureOfChangesInDeferredIncomeTaxAndSocialContributionLineItems [Line Items]
Noncurrent assets, beginning		131,821	114,010
Noncurrent assets, recognized in income		(2,868)	17,811
Noncurrent assets, business combination effect
Noncurrent assets, recognized comprehensive income
Noncurrent assets, ending		128,953	131,821
Social Security Contributions - Injunction on Judicial Deposit [member]
DisclosureOfChangesInDeferredIncomeTaxAndSocialContributionLineItems [Line Items]
Noncurrent assets, beginning		71,200	67,010
Noncurrent assets, recognized in income		3,340	4,190
Noncurrent assets, reclassification
Noncurrent assets, business combination effect
Noncurrent assets, recognized comprehensive income
Noncurrent assets, ending		74,540	71,200
Other [member]
DisclosureOfChangesInDeferredIncomeTaxAndSocialContributionLineItems [Line Items]
Noncurrent assets, beginning		143,259	147,771
Noncurrent assets, recognized in income		22,634	(4,512)
Noncurrent assets, business combination effect
Noncurrent assets, recognized comprehensive income
Noncurrent assets, ending		165,893	143,259
Noncurrent liabilities, beginning		42,577	35,728
Noncurrent liabilities, recognized in income		(10,626)	6,849
Noncurrent liabilities, reclassification
Noncurrent liabilities, business combination effect
Noncurrent liabilities, recognized comprehensive income
Noncurrent liabilities, ending		31,951	42,577
Deemed cost [member]
DisclosureOfChangesInDeferredIncomeTaxAndSocialContributionLineItems [Line Items]
Noncurrent liabilities, beginning		381,209	415,325
Noncurrent liabilities, recognized in income		(30,718)	(34,116)
Noncurrent liabilities, reclassification
Noncurrent liabilities, business combination effect
Noncurrent liabilities, recognized comprehensive income
Noncurrent liabilities, ending		350,491	381,209
Derivative financial instruments [member]
DisclosureOfChangesInDeferredIncomeTaxAndSocialContributionLineItems [Line Items]
Noncurrent liabilities, beginning		70,945	5,030
Noncurrent liabilities, recognized in income		46,737	65,915
Noncurrent liabilities, reclassification
Noncurrent liabilities, business combination effect
Noncurrent liabilities, recognized comprehensive income
Noncurrent liabilities, ending		117,682	70,945
Transaction Cost On Borrowings and Debentures [member]
DisclosureOfChangesInDeferredIncomeTaxAndSocialContributionLineItems [Line Items]
Noncurrent liabilities, beginning		32,108	31,127
Noncurrent liabilities, recognized in income		(7,539)	981
Noncurrent liabilities, reclassification
Noncurrent liabilities, business combination effect
Noncurrent liabilities, recognized comprehensive income
Noncurrent liabilities, ending		24,569	32,108
Escrow Deposits Monetary Variation [member]
DisclosureOfChangesInDeferredIncomeTaxAndSocialContributionLineItems [Line Items]
Noncurrent liabilities, beginning		61,145	64,167
Noncurrent liabilities, recognized in income		1,981	(3,022)
Noncurrent liabilities, reclassification
Noncurrent liabilities, business combination effect
Noncurrent liabilities, recognized comprehensive income
Noncurrent liabilities, ending		63,126	61,145
Accelerated Depreciation [member]
DisclosureOfChangesInDeferredIncomeTaxAndSocialContributionLineItems [Line Items]
Noncurrent liabilities, beginning		50,322	32,682
Noncurrent liabilities, recognized in income		25,633	17,640
Noncurrent liabilities, reclassification
Noncurrent liabilities, business combination effect
Noncurrent liabilities, recognized comprehensive income
Noncurrent liabilities, ending		R$ 75955	R$ 50322
[1]	Reclassification to Assets classified as held for sale (Note 40).

13 Taxes (Details 1)

13 Taxes (Details 1) R$ in Thousands	Dec. 31, 2020BRL (R$)
DisclosureOfTaxesLineItems [Line Items]
Assets	R$ 2268280
Liabilities	(1,561,514)
2021 [member]
DisclosureOfTaxesLineItems [Line Items]
Assets	618,750
Liabilities	(108,316)
2022 [member]
DisclosureOfTaxesLineItems [Line Items]
Assets	223,243
Liabilities	94,626
2023 [member]
DisclosureOfTaxesLineItems [Line Items]
Assets	117,380
Liabilities	(110,243)
2024 [member]
DisclosureOfTaxesLineItems [Line Items]
Assets	80,174
Liabilities	(121,232)
2025 [member]
DisclosureOfTaxesLineItems [Line Items]
Assets	80,408
Liabilities	(92,592)
2026 to 2028 [member]
DisclosureOfTaxesLineItems [Line Items]
Assets	179,810
Liabilities	(257,513)
2029 to 2030 [member]
DisclosureOfTaxesLineItems [Line Items]
Assets	968,515
Liabilities	R$ 776992

13 Taxes (Details 2)

13 Taxes (Details 2) - BRL (R$) R$ in Thousands	Dec. 31, 2020	Dec. 31, 2019
DisclosureOfTaxesLineItems [Line Items]
Other current taxes recoverable	R$ 1565323	R$ 205060
Other noncurrent taxes recoverable	4,539,498	322,011
Other current tax obligations	490,608	501,068
Other noncurrent tax obligations	622,483	662,114
Recoverable ICMS (VAT) [member]
DisclosureOfTaxesLineItems [Line Items]
Other current taxes recoverable	89,942	103,977
Other noncurrent taxes recoverable	84,376	74,568
Recoverable PIS/Pasep and Cofins Taxes [member]
DisclosureOfTaxesLineItems [Line Items]
Other current taxes recoverable	1,474,119	98,942
Other noncurrent taxes recoverable	4,421,403	213,667
Other Recoverable Taxes [member]
DisclosureOfTaxesLineItems [Line Items]
Other current taxes recoverable	1,262	2,141
Other noncurrent taxes recoverable	33,719	33,776
ICMS (VAT) payable [member]
DisclosureOfTaxesLineItems [Line Items]
Other current tax obligations	201,138	179,662
PIS/Pasep and Cofins Payable [member]
DisclosureOfTaxesLineItems [Line Items]
Other current tax obligations	179,133	125,197
IRRF on JSCP [member]
DisclosureOfTaxesLineItems [Line Items]
Other current tax obligations	43,950	117,807
Special Tax Regularization Program - Pert [member]
DisclosureOfTaxesLineItems [Line Items]
Other current tax obligations	50,565	49,310
Ordinary Financing of Taxes With The Federal Tax Authorities [member]
DisclosureOfTaxesLineItems [Line Items]
Other current tax obligations		18,063
Other Taxes [member]
DisclosureOfTaxesLineItems [Line Items]
Other current tax obligations	15,822	11,029
Social Security Contributions - Injunction on Judicial Deposit [member]
DisclosureOfTaxesLineItems [Line Items]
Other noncurrent tax obligations	209,145	209,747
Special Tax Regularization Program - Pert [member]
DisclosureOfTaxesLineItems [Line Items]
Other noncurrent tax obligations	408,738	447,897
Other Taxes [member]
DisclosureOfTaxesLineItems [Line Items]
Other noncurrent tax obligations	R$ 4600	R$ 4470

13 Taxes (Details 3)

13 Taxes (Details 3) R$ in Thousands	12 Months Ended
	Dec. 31, 2020BRL (R$)
Taxes [Abstract]
Tax credit - principal	R$ 3620118
Tax credit - monetary update	2,035,636
Effect on assets	5,655,754
Pis and Cofins to be refunded to consumers	121,838
Tax liabilities - Pis/Pasep and Cofins payable on financial income	(94,657)
Effect on liabilities	(4,497,380)
EFFECT ON BALANCE SHEET	1,158,374
Net operating revenue	810,563
Financial income, net of pis and cofins	944,549
Income tax and social contribution	(596,738)
EFFECT ON THE INCOME STATEMENT	R$ 1158374

13 Taxes (Details 4)

13 Taxes (Details 4) R$ in Thousands	Dec. 31, 2020BRL (R$)
Taxes [Abstract]
Calculated until February 2020	R$ 3805985
Calculated from March to June 2020	121,838
Total	121,838
Current	121,838
Noncurrent	R$ 3805985

13 Taxes (Details 5)

13 Taxes (Details 5) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disclosure Of Taxes Abstract
Operating profit	R$ 5119537
IRPJ and CSLL (34%)	(1,740,643)	R$ 967954	R$ 624933
Tax effects on:
Equity in income	65,806	36,297	36,555
Interest on own capital	276,808	222,848	90,440
Dividends	243	192	497
Non deductible expenses	(17,133)	(15,274)	(26,291)
Tax incentives	28,572	17,804	13,860
Unrecognized income and social contribution tax loss carry-forwards	(39,421)	(48,892)	(5,645)
Difference between the calculation bases of deemed profit and taxable profit	121,242	72,175	(19,680)
Others	19,161	R$ 7143	R$ 17486
Current IRPJ and CSLL	(1,260,469)
Deferred IRPJ and CSLL	R$ 24896
Effective rate - %	25.10%	23.70%	25.60%

13 Taxes (Details Narrative)

13 Taxes (Details Narrative) - BRL (R$) R$ in Thousands	1 Months Ended
	Sep. 30, 2019	Dec. 31, 2020	May 15, 2020	Dec. 31, 2019
Disclosure of assets and liabilities with significant risk of material adjustment [line items]
Unrecognized tax credits		R$ 131655		R$ 34567
Recoverable PIS/Pasep and Cofins Taxes [member]
Disclosure of assets and liabilities with significant risk of material adjustment [line items]
Liabilities			R$ 2965
Adjusted balance	R$ 83716
Operating revenue	100,931
Financial income	6,522
Amount of tax recoverable	R$ 107453

14 Prepaid Expenses (Details)

14 Prepaid Expenses (Details) - BRL (R$) R$ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Disclosure of fair value measurement of assets [line items]
Prepaid expenses	R$ 37031	R$ 33695
Prepaid expenses, current	36,987	33,563
Prepaid expenses, noncurrent	44	132
Program for incentive to alternative energy sources - Proinfa [member]
Disclosure of fair value measurement of assets [line items]
Prepaid expenses	22,408	18,504
Insurance premiums [member]
Disclosure of fair value measurement of assets [line items]
Prepaid expenses	14,453	11,693
Risk Premium - GSF Renegotiation [member]
Disclosure of fair value measurement of assets [line items]
Prepaid expenses		3,180
Others [member]
Disclosure of fair value measurement of assets [line items]
Prepaid expenses	R$ 170	R$ 318

14 Prepaid Expenses (Details 1)

14 Prepaid Expenses (Details 1) R$ in Thousands	12 Months Ended
	Dec. 31, 2020BRL (R$)MW	Dec. 31, 2019BRL (R$)	Dec. 31, 2018BRL (R$)
Disclosure of fair value measurement of assets [line items]
Asset value to recover as renegotiation of GSF	R$ 24628	R$ 34847	R$ 24628
Hydrological risk [member]
Disclosure of fair value measurement of assets [line items]
Eligible amount of energy (Average MW) | MW	458,419
Asset value to recover as renegotiation of GSF	R$ 134620
Value of prepaid expenses to amortize with future risk premium	76,171
Value of intangible assets amortization over the concession period	R$ 58449
Maua [member] | Hydrological risk [member]
Disclosure of fair value measurement of assets [line items]
Physical guarantee (Average MW) | MW	100,827
Eligible amount of energy (Average MW) | MW	97.391
Amortization period of prepaid expenses	01.01.2016 to 06.30.2020
Grant extension period (intangible asset)	not applicable
Asset value to recover as renegotiation of GSF	R$ 28623
Value of prepaid expenses to amortize with future risk premium	R$ 28623
Foz Do Areia [member] | Hydrological risk [member]
Disclosure of fair value measurement of assets [line items]
Physical guarantee (Average MW) | MW	576
Eligible amount of energy (Average MW) | MW	226.705
Amortization period of prepaid expenses	01.01.2016 to 12.31.2016
Grant extension period (intangible asset)	05.24.2023 to 09.17.2023
Asset value to recover as renegotiation of GSF	R$ 66628
Value of prepaid expenses to amortize with future risk premium	17,222
Value of intangible assets amortization over the concession period	R$ 49406
Santa Clara and Fundoa [member] | Hydrological risk [member]
Disclosure of fair value measurement of assets [line items]
Physical guarantee (Average MW) | MW	135.400
Eligible amount of energy (Average MW) | MW	134.323
Amortization period of prepaid expenses	01.01.2016 to 04.22.2019
Grant extension period (intangible asset)	10.25.2036 to 05.28.2037
Asset value to recover as renegotiation of GSF	R$ 39369
Value of prepaid expenses to amortize with future risk premium	30,326
Value of intangible assets amortization over the concession period	R$ 9043

14 Prepaid Expenses (Details 2)

14 Prepaid Expenses (Details 2) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disclosure of fair value measurement of assets [line items]
Asset value to recover as renegotiation of GSF, beginning	R$ 34847	R$ 24628
Amortization	(10,219)	(16,434)
Transfers
Asset value to recover as renegotiation of GSF, ending	24,628	34,847
Risk premium to be amortized - prepaid expenses		3,180	R$ 12574
Grant extension period - intangible	24,628	31,667	R$ 38707
Intangible [member]
Disclosure of fair value measurement of assets [line items]
Asset value to recover as renegotiation of GSF, beginning	31,667	38,707
Amortization	(7,039)	(7,040)
Transfers
Asset value to recover as renegotiation of GSF, ending	24,628	31,667
Risk Premium - Current Asset [member]
Disclosure of fair value measurement of assets [line items]
Asset value to recover as renegotiation of GSF, beginning	3,180	(3,180)
Amortization	(3,180)	(9,394)
Transfers		3,180
Asset value to recover as renegotiation of GSF, ending		3,180
Risk Premium Noncurrent Asset [member]
Disclosure of fair value measurement of assets [line items]
Asset value to recover as renegotiation of GSF, beginning		3,180
Amortization
Transfers		(3,180)
Asset value to recover as renegotiation of GSF, ending

14 Prepaid Expenses (Details Na

14 Prepaid Expenses (Details Narrative)	12 Months Ended
	Dec. 31, 2020MW
Disclosure Of Prepaid Expenses Abstract
Per average electricity	33.55

15 Judicial Deposits (Details)

15 Judicial Deposits (Details) - BRL (R$) R$ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Disclosure of fair value measurement of assets [line items]
Judicial deposits	R$ 486746	R$ 504190
Labor Claims [member]
Disclosure of fair value measurement of assets [line items]
Judicial deposits	72,263	85,187
Taxes Claims [member]
Disclosure of fair value measurement of assets [line items]
Judicial deposits	346,659	351,402
Civil [member]
Disclosure of fair value measurement of assets [line items]
Judicial deposits	67,641	60,233
Civil [member] | Customers [member]
Disclosure of fair value measurement of assets [line items]
Judicial deposits	3,479	1,897
Civil [member] | Easements [member]
Disclosure of fair value measurement of assets [line items]
Judicial deposits	7,156	5,076
Civil [member] | Civil [member]
Disclosure of fair value measurement of assets [line items]
Judicial deposits	57,006	53,260
Others [member]
Disclosure of fair value measurement of assets [line items]
Judicial deposits	R$ 183	R$ 7368

16 Investments (Details)

16 Investments (Details) - BRL (R$) R$ in Thousands		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019
DisclosureOfInvestmentsLineItems [Line Items]
Investments, beginning		R$ 2523179	R$ 2368234
Equity		193,547	106,757
Investment/advance for future capital increase		72,439	267,471
Capital decrease		(228)	(35,035)
Amortization		372	(372)
Dividends and JSCP		(50,926)	(49,613)
Transfers			(134,263)
Other	[1]	(8,122)
Investments, ending		2,729,517	2,523,179
Associates [Member]
DisclosureOfInvestmentsLineItems [Line Items]
Investments, beginning		50,999	48,928
Equity		19,192	24,414
Investment/advance for future capital increase			123
Capital decrease		(228)	(735)
Amortization
Dividends and JSCP		(21,768)	(21,731)
Transfers
Other	[1]	(8,122)
Investments, ending		40,073	50,999
Investment Property [member]
DisclosureOfInvestmentsLineItems [Line Items]
Investments, beginning		813	1,342
Equity
Investment/advance for future capital increase
Capital decrease
Amortization		(5)	(5)
Dividends and JSCP
Transfers			(524)
Other	[1]
Investments, ending		808	813
Advance for Future Capital Future Capital Increase [member]
DisclosureOfInvestmentsLineItems [Line Items]
Investments, beginning
Equity			142
Investment/advance for future capital increase
Capital decrease			133,597
Amortization
Dividends and JSCP
Transfers			(133,739)
Investments, ending
Dona Francisca Energetica [member] | Associates [Member]
DisclosureOfInvestmentsLineItems [Line Items]
Investments, beginning		28,423	29,144
Equity		9,674	9,853
Investment/advance for future capital increase
Capital decrease
Amortization
Dividends and JSCP		(9,950)	(10,574)
Transfers
Other	[1]
Investments, ending		28,147	28,423
Foz Do Chopim Energetica [member] | Associates [Member]
DisclosureOfInvestmentsLineItems [Line Items]
Investments, beginning		12,175	8,227
Equity		9,629	13,924
Investment/advance for future capital increase
Capital decrease
Amortization
Dividends and JSCP		(11,818)	(9,976)
Transfers
Other	[1]
Investments, ending		9,986	12,175
Domino Holdings [member] | Associates [Member]
DisclosureOfInvestmentsLineItems [Line Items]
Investments, beginning		246	2,442
Equity		(93)	(280)
Investment/advance for future capital increase
Capital decrease			(735)
Amortization
Dividends and JSCP			(1,181)
Transfers
Other	[1]	(153)
Investments, ending			246
Others [member] | Associates [Member]
DisclosureOfInvestmentsLineItems [Line Items]
Investments, beginning		10,155	9,115
Equity		(18)	917
Investment/advance for future capital increase			123
Capital decrease		(228)
Amortization
Dividends and JSCP
Transfers
Other	[1]	(7,969)
Investments, ending		1,940	10,155
Joint Ventures [member]
DisclosureOfInvestmentsLineItems [Line Items]
Investments, beginning		2,471,367	2,317,822
Equity		174,355	82,343
Investment/advance for future capital increase		72,439	133,751
Capital decrease			(34,300)
Amortization		(367)	(367)
Dividends and JSCP		(29,158)	(27,882)
Transfers
Other	[1]
Investments, ending		2,688,636	2,471,367
Joint Ventures [member] | Voltalia Sao Miguel Do Gostoso I [member]
DisclosureOfInvestmentsLineItems [Line Items]
Investments, beginning		110,099	110,568
Equity		(2,378)	(3,409)
Investment/advance for future capital increase			2,940
Capital decrease
Amortization
Dividends and JSCP
Transfers
Other	[1]
Investments, ending		107,721	110,099
Joint Ventures [member] | Voltalia Sao Miguel Do Gostoso - Authorization Rights [member]
DisclosureOfInvestmentsLineItems [Line Items]
Investments, beginning		10,038	10,405
Equity
Investment/advance for future capital increase
Capital decrease
Amortization		(367)	(367)
Dividends and JSCP
Transfers
Other	[1]
Investments, ending		9,671	10,038
Joint Ventures [member] | Caiua [member]
DisclosureOfInvestmentsLineItems [Line Items]
Investments, beginning		78,312	74,639
Equity		(8,964)	4,800
Investment/advance for future capital increase		26,014
Capital decrease
Amortization
Dividends and JSCP			(1,127)
Transfers
Other	[1]
Investments, ending		95,362	78,312
Joint Ventures [member] | Integracao maranhense [member]
DisclosureOfInvestmentsLineItems [Line Items]
Investments, beginning		138,716	129,684
Equity		13,672	11,316
Investment/advance for future capital increase
Capital decrease
Amortization
Dividends and JSCP		(3,807)	(2,284)
Transfers
Other	[1]
Investments, ending		148,581	138,716
Joint Ventures [member] | Matrincha [member]
DisclosureOfInvestmentsLineItems [Line Items]
Investments, beginning		711,527	673,216
Equity		25,644	48,634
Investment/advance for future capital increase
Capital decrease
Amortization
Dividends and JSCP		(2,668)	(10,323)
Transfers
Other	[1]
Investments, ending		734,503	711,527
Joint Ventures [member] | Guaraciaba [member]
DisclosureOfInvestmentsLineItems [Line Items]
Investments, beginning		337,077	356,941
Equity		25,528	18,312
Investment/advance for future capital increase
Capital decrease			(34,300)
Amortization
Dividends and JSCP		(1,435)	(3,876)
Transfers
Other	[1]
Investments, ending		361,170	337,077
Joint Ventures [member] | Paranaiba [member]
DisclosureOfInvestmentsLineItems [Line Items]
Investments, beginning		173,973	160,584
Equity		29,708	16,375
Investment/advance for future capital increase
Capital decrease
Amortization
Dividends and JSCP			(2,986)
Transfers
Other	[1]
Investments, ending		203,681	173,973
Joint Ventures [member] | Mata de santa genebra [member]
DisclosureOfInvestmentsLineItems [Line Items]
Investments, beginning		573,357	484,262
Equity		48,594	(41,716)
Investment/advance for future capital increase		39,479	130,811
Capital decrease
Amortization
Dividends and JSCP
Transfers
Other	[1]
Investments, ending		661,430	573,357
Joint Ventures [member] | Cantareira [member]
DisclosureOfInvestmentsLineItems [Line Items]
Investments, beginning		338,268	317,523
Equity		42,666	28,031
Investment/advance for future capital increase
Capital decrease
Amortization
Dividends and JSCP		(21,248)	(7,286)
Transfers
Other	[1]
Investments, ending		359,686	338,268
Joint Ventures [member] | Solar Parana [member]
DisclosureOfInvestmentsLineItems [Line Items]
Investments, beginning
Equity		(115)
Investment/advance for future capital increase		6,946
Capital decrease
Amortization
Dividends and JSCP
Other	[1]
Investments, ending		R$ 6831
[1]	R$ 7,969 of Impairment of Estacao Osasco Desenvolvimento Imobiliario SA, an associate of UEG Araucaria, and R$ 153 of liquidation of Domino.

16 Investments (Details 1)

16 Investments (Details 1) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Disclosure of subsidiaries [line items]
ASSETS	R$ 46784664
Current assets	11,407,431
Noncurrent assets	35,377,233
Current liabilities	9,654,392
Noncurrent liabilities	16,879,754
Equity	20,250,518	R$ 17598212	R$ 16336214	R$ 15345579
STATEMENT OF INCOME
Operating revenues	18,633,249
Operating costs and expenses	(13,347,822)
Financial results	866,271
Equity in earnings of investees	193,547
Income tax and social contribution	1,285,365
Net income (loss)	3,909,750
Total comprehensive income	3,730,595	1,939,685	1,405,644
STATEMENTS OF CASH FLOWS
Cash flows from operational activities	3,940,844
Cash flows from investment activities	(1,667,571)
Cash flows from financing activities	(1,715,113)
TOTAL EFFECTS ON CASH AND CASH EQUIVALENTS	558,160
CHANGE IN CASH AND CASH EQUIVALENTS	558,160
Compagas [member]
Disclosure of subsidiaries [line items]
ASSETS	749,434	904,993	675,286
Current assets	245,028	313,896	204,725
Noncurrent assets	504,406	591,097	470,561
LIABILITIES	749,434	904,993	675,286
Current liabilities	173,144	236,190	133,769
Noncurrent liabilities	81,230	110,475	106,900
Equity	495,060	558,328	434,617
STATEMENT OF INCOME
Operating revenues	535,206	866,884	588,532
Operating costs and expenses	(452,495)	(662,306)	(515,594)
Financial results	(764)	43,186	(2,411)
Income tax and social contribution	(22,967)	(74,791)	(10,909)
Net income (loss)	58,980	172,973	59,618
Other comprehensive income	(343)	(1,277)	187
Total comprehensive income	58,637	171,696	59,805
STATEMENTS OF CASH FLOWS
Cash flows from operational activities	101,708	54,760	66,017
Cash flows from investment activities	(17,120)	(17,531)	(15,961)
Cash flows from financing activities	(115,625)	14,312	(43,980)
TOTAL EFFECTS ON CASH AND CASH EQUIVALENTS	(31,037)	51,541	6,076
Cash and cash equivalents at the beginning of the year	141,696	90,155	84,079
Cash and cash equivalents at the end of the year	110,659	141,696	90,155
CHANGE IN CASH AND CASH EQUIVALENTS	(31,037)	51,541	6,076
Elejor [member]
Disclosure of subsidiaries [line items]
ASSETS	705,233	625,154	652,175
Current assets	165,150	80,079	80,990
Noncurrent assets	540,083	545,075	571,185
LIABILITIES	705,233	625,154	652,175
Current liabilities	95,465	85,647	124,880
Noncurrent liabilities	596,278	496,648	473,318
Equity	13,490	42,859	53,977
STATEMENT OF INCOME
Operating revenues	194,849	218,421	293,942
Operating costs and expenses	(67,323)	(86,237)	(89,931)
Financial results	(172,049)	(92,728)	(89,301)
Income tax and social contribution	15,154	(13,331)	(38,379)
Net income (loss)	(29,369)	26,125	76,331
Total comprehensive income	(29,369)	26,125	76,331
STATEMENTS OF CASH FLOWS
Cash flows from operational activities	22,097	51,839	127,108
Cash flows from investment activities	(208)	(314)	(2,659)
Cash flows from financing activities	(8,151)	(56,533)	(119,468)
TOTAL EFFECTS ON CASH AND CASH EQUIVALENTS	13,738	(5,008)	4,981
Cash and cash equivalents at the beginning of the year	37,878	42,886	37,905
Cash and cash equivalents at the end of the year	51,616	37,878	42,886
CHANGE IN CASH AND CASH EQUIVALENTS	13,738	(5,008)	4,981
UEG Araucaria [member]
Disclosure of subsidiaries [line items]
ASSETS	554,079	421,533	436,137
Current assets	392,775	80,788	33,573
Noncurrent assets	161,304	340,745	402,564
LIABILITIES	554,079	421,533	436,137
Current liabilities	309,265	91,066	42,185
Noncurrent liabilities	6,603	14,727	23,290
Equity	238,211	315,740	370,662
STATEMENT OF INCOME
Operating revenues	589,909	52,216	524
Operating costs and expenses	(647,516)	(131,596)	(94,970)
Financial results	203	832	2,275
Equity in earnings of investees		916
Income tax and social contribution	(19,920)	(22,703)	16,316
Net income (loss)	(77,324)	(100,335)	(75,855)
Other comprehensive income	(205)	132
Total comprehensive income	(77,529)	(100,203)	(75,855)
STATEMENTS OF CASH FLOWS
Cash flows from operational activities	23,491	(57,585)	(26,980)
Cash flows from investment activities	1,317	(1,945)	(2,768)
Cash flows from financing activities	32,879	45,133
TOTAL EFFECTS ON CASH AND CASH EQUIVALENTS	57,687	(14,397)	(29,748)
Cash and cash equivalents at the beginning of the year	7,119	21,516	51,264
Cash and cash equivalents at the end of the year	64,806	7,119	21,516
CHANGE IN CASH AND CASH EQUIVALENTS	R$ 57687	R$ 14397	R$ 29748

16 Investments (Details 2)

16 Investments (Details 2) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Equity Attributable To Non-Controlling Shareholders [Roll Forward]
Equity attributable to non-controlling shareholders, beginning	R$ 345798	R$ 303289	R$ 302661
Net income (loss)	5,548
Other comprehensive income	(207)	(601)	154
Additional dividends proposed	(51,799)	(3,335)
Dividends	(7,933)	31,352	(36,467)
Gain with interest variation in Subsidiary		4,874
Equity attributable to non-controlling shareholders, ending	291,407	345,798	303,289
Compagas [member]
Equity Attributable To Non-Controlling Shareholders [Roll Forward]
Equity attributable to non-controlling shareholders, beginning	273,580	212,962	194,901
Net income (loss)	28,898	84,758	29,213
Other comprehensive income	(168)	(626)	91
Additional dividends proposed	(51,799)
Dividends	(7,933)	(23,514)	(11,243)
Equity attributable to non-controlling shareholders, ending	242,578	273,580	212,962
Elejor [member]
Equity Attributable To Non-Controlling Shareholders [Roll Forward]
Equity attributable to non-controlling shareholders, beginning	12,858	16,193	18,518
Net income (loss)	(8,812)	7,838	22,899
Other comprehensive income
Additional dividends proposed		(3,335)
Dividends		(7,838)	(25,224)
Equity attributable to non-controlling shareholders, ending	4,046	12,858	16,193
UEG Araucaria [member]
Equity Attributable To Non-Controlling Shareholders [Roll Forward]
Equity attributable to non-controlling shareholders, beginning	59,360	74,134	89,242
Net income (loss)	(14,538)	(19,673)	(15,171)
Other comprehensive income	(39)	25	63
Gain with interest variation in Subsidiary		4,874
Equity attributable to non-controlling shareholders, ending	R$ 44783	R$ 59360	R$ 74134

16 Investments (Details 3)

16 Investments (Details 3) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Disclosure of joint ventures [line items]
ASSETS	R$ 46784664
Current assets	11,407,431
Cash and cash equivalents	3,222,768	R$ 2941727
Noncurrent assets	35,377,233
Current liabilities	9,654,392
Noncurrent liabilities	16,879,754
Equity	20,250,518	17,598,212	R$ 16336214	R$ 15345579
STATEMENT OF INCOME
Net operating income	18,633,249
Operating costs and expenses	(13,347,822)
Equity in income of subsidiaries	193,547
Income tax and social contribution	1,285,365
Net income	3,909,750
Total comprehensive income	3,730,595	1,939,685	1,405,644
Voltalia [member]
Disclosure of joint ventures [line items]
ASSETS	222,038	226,898	227,867
Current assets	3,623	3,664	2,344
Cash and cash equivalents	3,579	1,494	205
Other current assets	44	2,170	2,139
Noncurrent assets	218,415	223,234	225,523
LIABILITIES	222,038	226,898	227,867
Current liabilities	2,199	2,206	2,216
Financial liabilities
Other current liabilities	2,199	2,206	2,216
Noncurrent liabilities
Financial liabilities
Other noncurrent liabilities
Equity	219,839	224,692	225,651
STATEMENT OF INCOME
Operating costs and expenses	(66)	(111)	(103)
Financial results	32	146	(170)
Equity in income of subsidiaries	(4,893)	(7,080)	(7,815)
Income tax and social contribution		(5)
Net income	(4,927)	(7,050)	(8,088)
Other comprehensive income
Total comprehensive income	R$ 4927	R$ 7050	R$ 8088
Investment interest - %	49.00%	49.00%	49.00%
Investment book value	R$ 107721	R$ 110099	R$ 110568
Caiua [member]
Disclosure of joint ventures [line items]
ASSETS	267,425	271,409	261,951
Current assets	31,048	30,472	26,471
Cash and cash equivalents	6,871	3,968	1,128
Other current assets	24,177	26,504	25,343
Noncurrent assets	236,377	240,937	235,480
LIABILITIES	267,425	271,409	261,951
Current liabilities	18,995	28,892	24,955
Financial liabilities	7,392	7,584	7,615
Other current liabilities	11,603	21,308	17,340
Noncurrent liabilities	53,816	82,699	84,672
Financial liabilities	42,864	49,958	57,028
Other noncurrent liabilities	10,952	32,741	27,644
Equity	194,614	159,818	152,324
STATEMENT OF INCOME
Net operating income	17,927	25,180	25,129
Operating costs and expenses	(34,584)	(5,481)	(4,785)
Financial results	(3,389)	(4,557)	(5,017)
Equity in income of subsidiaries
Income tax and social contribution	1,752	(5,348)	(5,053)
Net income	(18,294)	9,794	10,274
Other comprehensive income
Total comprehensive income	R$ 18294	R$ 9794	R$ 10274
Investment interest - %	49.00%	49.00%	49.00%
Investment book value	R$ 95362	R$ 78312	R$ 74639
Integracao maranhense [member]
Disclosure of joint ventures [line items]
ASSETS	475,734	486,305	465,801
Current assets	59,709	59,466	47,347
Cash and cash equivalents	12,696	6,570	1
Other current assets	47,013	52,896	47,346
Noncurrent assets	416,025	426,839	418,454
LIABILITIES	475,734	486,305	465,801
Current liabilities	51,926	77,116	73,856
Financial liabilities	13,180	13,468	13,228
Other current liabilities	38,746	63,648	60,628
Noncurrent liabilities	120,579	126,095	127,284
Financial liabilities	65,624	78,350	91,342
Other noncurrent liabilities	54,955	47,745	35,942
Equity	303,229	283,094	264,661
STATEMENT OF INCOME
Net operating income	31,418	44,264	42,379
Operating costs and expenses	11,706	(5,672)	(7,732)
Financial results	(5,229)	(6,594)	(7,817)
Equity in income of subsidiaries
Income tax and social contribution	(9,991)	(8,904)	(7,974)
Net income	27,904	23,094	18,856
Other comprehensive income
Total comprehensive income	R$ 27904	R$ 23094	R$ 18856
Investment interest - %	49.00%	49.00%	49.00%
Investment book value	R$ 148581	R$ 138716	R$ 129684
Matrincha [member]
Disclosure of joint ventures [line items]
ASSETS	2,357,028	2,295,925	2,199,434
Current assets	261,168	301,722	326,557
Cash and cash equivalents	46,198	85,293	116,634
Other current assets	214,970	216,429	209,923
Noncurrent assets	2,095,860	1,994,203	1,872,877
LIABILITIES	2,357,028	2,295,925	2,199,434
Current liabilities	192,512	166,430	137,627
Financial liabilities	80,141	82,665	70,192
Other current liabilities	112,371	83,765	67,435
Noncurrent liabilities	665,528	677,398	687,897
Financial liabilities	612,413	624,779	683,316
Other noncurrent liabilities	53,115	52,619	4,581
Equity	1,498,988	1,452,097	1,373,910
STATEMENT OF INCOME
Net operating income	328,171	250,188	272,103
Operating costs and expenses	(160,795)	(70,886)	(47,771)
Financial results	(71,164)	(59,794)	(61,910)
Equity in income of subsidiaries
Income tax and social contribution	(30,178)	(33,103)	(59,544)
Net income	66,034	86,405	102,878
Other comprehensive income
Total comprehensive income	R$ 66034	R$ 86405	R$ 102878
Investment interest - %	49.00%	49.00%	49.00%
Investment book value	R$ 734503	R$ 711527	R$ 673216
Guaraciaba [member]
Disclosure of joint ventures [line items]
ASSETS	1,269,378	1,318,517	1,295,670
Current assets	165,063	150,875	229,693
Cash and cash equivalents	25,565	44,805	136,191
Other current assets	139,498	106,070	93,502
Noncurrent assets	1,104,315	1,167,642	1,065,977
LIABILITIES	1,269,378	1,318,517	1,295,670
Current liabilities	86,163	84,863	79,701
Financial liabilities	28,741	33,102	27,950
Other current liabilities	57,422	51,761	51,751
Noncurrent liabilities	446,133	545,742	487,520
Financial liabilities	446,801	461,353	482,125
Other noncurrent liabilities	(668)	84,389	5,395
Equity	737,082	687,912	728,449
STATEMENT OF INCOME
Net operating income	109,978	111,912	181,665
Operating costs and expenses	(8,317)	(29,067)	(27,273)
Financial results	(38,883)	(42,548)	(35,036)
Equity in income of subsidiaries
Income tax and social contribution	(22,084)	(2,926)	(47,273)
Net income	40,694	37,371	72,083
Other comprehensive income
Total comprehensive income	R$ 40694	R$ 37371	R$ 72083
Investment interest - %	49.00%	49.00%	49.00%
Investment book value	R$ 361170	R$ 337077	R$ 356941
Paranaiba [member]
Disclosure of joint ventures [line items]
ASSETS	1,687,613	1,625,008	1,574,846
Current assets	179,229	178,558	165,072
Cash and cash equivalents	20,820	20,338	13,931
Other current assets	158,409	158,220	151,141
Noncurrent assets	1,508,384	1,446,450	1,409,774
LIABILITIES	1,687,613	1,625,008	1,574,846
Current liabilities	78,981	104,065	104,599
Financial liabilities	62,143	60,399	55,968
Other current liabilities	16,838	43,666	48,631
Noncurrent liabilities	777,279	810,847	814,798
Financial liabilities	545,200	580,451	612,854
Other noncurrent liabilities	232,079	230,396	201,944
Equity	831,353	710,096	655,449
STATEMENT OF INCOME
Net operating income	478,147	198,573	(14,331)
Operating costs and expenses	18,801	30,560	23,244
Financial results	(48,184)	(54,154)	(57,977)
Equity in income of subsidiaries
Income tax and social contribution	(125,646)	(47,024)	28,163
Net income	285,516	66,835	(67,389)
Other comprehensive income
Total comprehensive income	R$ 285516	R$ 66835	R$ 67389
Investment interest - %	24.50%	24.50%	24.50%
Investment book value	R$ 203681	R$ 173973	R$ 160584
Mata de santa genebra [member]
Disclosure of joint ventures [line items]
ASSETS	2,712,737	2,482,326	2,365,160
Current assets	340,382	268,381	202,253
Cash and cash equivalents	61,171	48,395	19,568
Other current assets	279,211	219,986	182,685
Noncurrent assets	2,372,355	2,213,945	2,162,907
LIABILITIES	2,712,737	2,482,326	2,365,160
Current liabilities	158,350	129,810	124,606
Financial liabilities	104,308	93,643	33,964
Other current liabilities	54,042	36,167	90,642
Noncurrent liabilities	1,234,165	1,208,089	1,273,962
Financial liabilities	1,215,988	1,208,089	934,650
Other noncurrent liabilities	18,177		339,312
Equity	1,320,222	1,144,427	966,592
STATEMENT OF INCOME
Net operating income	364,070	357,522	514,591
Operating costs and expenses	(125,569)	(384,228)	462,839
Financial results	(91,947)	(99,186)	(59,507)
Equity in income of subsidiaries
Income tax and social contribution	(49,560)	42,627	2,685
Net income	96,994	(83,265)	(5,070)
Other comprehensive income
Total comprehensive income	R$ 96994	R$ 83265	R$ 5070
Investment interest - %	50.10%	50.10%	50.10%
Investment book value	R$ 661430	R$ 573357	R$ 484262
Cantareira [member]
Disclosure of joint ventures [line items]
ASSETS	1,567,577	1,496,577	1,443,693
Current assets	165,816	182,971	161,328
Cash and cash equivalents	34,435	60,252	301
Other current assets	131,381	122,719	161,027
Noncurrent assets	1,401,761	1,313,606	1,282,365
LIABILITIES	1,567,577	1,496,577	1,443,693
Current liabilities	63,206	72,907	60,964
Financial liabilities	41,314	48,619	46,329
Other current liabilities	21,892	24,288	14,635
Noncurrent liabilities	770,317	733,326	734,724
Financial liabilities	489,784	507,775	532,179
Other noncurrent liabilities	280,533	225,551	202,545
Equity	734,054	690,344	648,005
STATEMENT OF INCOME
Net operating income	196,039	138,259	195,441
Operating costs and expenses	(23,533)	(5,360)	60,529
Financial results	(40,630)	(46,190)	(58,402)
Equity in income of subsidiaries
Income tax and social contribution	(44,805)	(29,498)	(26,379)
Net income	87,071	57,211	50,131
Other comprehensive income
Total comprehensive income	R$ 87071	R$ 57211	R$ 50131
Investment interest - %	49.00%	49.00%	49.00%
Investment book value	R$ 359686	R$ 338268	R$ 317523

16 Investments (Details 4)

16 Investments (Details 4) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Disclosure of associates [line items]
ASSETS	R$ 46784664
Current assets	11,407,431
Noncurrent assets	35,377,233
Current liabilities	9,654,392
Noncurrent liabilities	16,879,754
Equity	20,250,518	R$ 17598212	R$ 16336214	R$ 15345579
STATEMENT OF INCOME
Net operating revenues	18,633,249
Operating costs and expenses	(13,347,822)
Income tax and social contribution	1,285,365
Net income	3,909,750
Total comprehensive income	3,730,595	1,939,685	1,405,644
Dona Francisca [member]
Disclosure of associates [line items]
ASSETS	128,798	130,883	134,141
Current assets	14,562	13,406	12,493
Noncurrent assets	114,236	117,477	121,648
LIABILITIES	128,798	130,883	134,141
Current liabilities	4,452	4,344	4,231
Noncurrent liabilities	2,119	3,118	3,361
Equity	122,227	123,421	126,549
STATEMENT OF INCOME
Net operating revenues	70,314	70,717	70,716
Operating costs and expenses	(26,171)	(25,957)	(25,268)
Financial income (expense)	208	475	366
Income tax and social contribution	(2,343)	(2,454)	(2,446)
Net income	42,008	42,781	43,368
Total comprehensive income	R$ 42008	R$ 42781	R$ 43368
Investment interest - %	23.0303%	23.0303%	23.0303%
Investment book value	R$ 28147	R$ 28423	R$ 29144
Foz Do Chopim [member]
Disclosure of associates [line items]
ASSETS	62,635	61,635	106,736
Current assets	33,378	31,054	73,786
Noncurrent assets	29,257	30,581	32,950
LIABILITIES	62,635	61,635	106,736
Current liabilities	34,723	2,354	57,603
Noncurrent liabilities		25,243	26,133
Equity	27,912	34,038	23,000
STATEMENT OF INCOME
Net operating revenues	55,740	56,929	46,479
Operating costs and expenses	(21,260)	(16,278)	(2,020)
Financial income (expense)	(5,527)	621	(638)
Income tax and social contribution	(2,035)	(2,346)	(6,880)
Net income	26,918	38,926	36,941
Total comprehensive income	R$ 26918	R$ 38926	R$ 36941
Investment interest - %	35.77%	35.77%	35.77%
Investment book value	R$ 9986	R$ 12175	R$ 8227

16 Investments (Details Narrati

16 Investments (Details Narrative) - BRL (R$) R$ in Thousands		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
DisclosureOfInvestmentsLineItems [Line Items]
Commitments in relation to joint ventures		R$ 632	R$ 5936	R$ 81263
Contingent liabilities incurred in relation to interests in joint ventures		227,467	89,688	40,324
Contingent liabilities incurred in relation to interests in associates		28,891
Other	[1]	(8,122)
Associates [Member]
DisclosureOfInvestmentsLineItems [Line Items]
Other	[1]	(8,122)
Contingent liabilities		1,428	R$ 78793	R$ 61341
Associates [Member] | Domino Holdings [member]
DisclosureOfInvestmentsLineItems [Line Items]
Other	[1]	(153)
Associates [Member] | Others [member]
DisclosureOfInvestmentsLineItems [Line Items]
Other	[1]	R$ 7969
[1]	R$ 7,969 of Impairment of Estacao Osasco Desenvolvimento Imobiliario SA, an associate of UEG Araucaria, and R$ 153 of liquidation of Domino.

17 Property, Plant and Equipm_2

17 Property, Plant and Equipment (Details) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment, cost	R$ 17908424	R$ 19010184
Property, plant and equipment, Accumulated depreciation	(8,412,964)	(8,418,081)
Property, plant and equipment, net	9,495,460	10,592,103
In Service [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment, cost	17,298,078	18,437,598
Property, plant and equipment, Accumulated depreciation	(8,412,964)	(8,418,081)
Property, plant and equipment, net	8,885,114	10,019,517
In Service [member] | Furniture And Tools [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment, cost	22,314	22,415
Property, plant and equipment, Accumulated depreciation	(15,498)	(14,466)
Property, plant and equipment, net	6,816	7,949
In Service [member] | Impairment (17.5) [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment, cost	(925,521)	(961,177)
Property, plant and equipment, Accumulated depreciation
Property, plant and equipment, net	(925,521)	(961,177)
In Service [member] | Special Obligations [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment, cost	(332)	(78)
Property, plant and equipment, Accumulated depreciation	81	35
Property, plant and equipment, net	(251)	(43)
In Service [member] | Vehicles and Aircraft [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment, cost	44,617	47,960
Property, plant and equipment, Accumulated depreciation	(42,725)	(44,876)
Property, plant and equipment, net	1,892	3,084
In Service [member] | Land [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment, cost	490,177	490,071
Property, plant and equipment, Accumulated depreciation	(38,269)	(27,651)
Property, plant and equipment, net	451,908	462,420
In Service [member] | Machinery and Equipment [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment, cost	7,644,171	8,875,458
Property, plant and equipment, Accumulated depreciation	(2,619,939)	(2,871,568)
Property, plant and equipment, net	5,024,232	6,003,890
In Service [member] | Reservoirs, Dams and Aqueducts [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment, cost	8,081,989	8,082,238
Property, plant and equipment, Accumulated depreciation	(4,600,598)	(4,405,546)
Property, plant and equipment, net	3,481,391	3,676,692
In Service [member] | Buildings [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment, cost	1,968,591	1,962,033
Property, plant and equipment, Accumulated depreciation	(1,096,016)	(1,054,009)
Property, plant and equipment, net	872,575	908,024
In Service [member] | Impairment (17.6) [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment, cost	(27,928)	(81,322)
Property, plant and equipment, Accumulated depreciation
Property, plant and equipment, net	(27,928)	(81,322)
In Progress [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment, cost	610,346	572,586
Property, plant and equipment, Accumulated depreciation
Property, plant and equipment, net	610,346	572,586
In Progress [member] | Impairment (17.5) [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment, cost	(120,308)	(122,261)
Property, plant and equipment, Accumulated depreciation
Property, plant and equipment, net	(120,308)	(122,261)
In Progress [member] | Cost [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment, cost	734,507	700,172
Property, plant and equipment, Accumulated depreciation
Property, plant and equipment, net	734,507	700,172
In Progress [member] | Impairment (17.6) [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment, cost	(3,853)	(5,325)
Property, plant and equipment, Accumulated depreciation
Property, plant and equipment, net	R$ 3853	R$ 5325

17 Property, Plant and Equipm_3

17 Property, Plant and Equipment (Details 1) - BRL (R$) R$ in Thousands		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019
Disclosure of detailed information about property, plant and equipment [line items]
Additions/Reversal of impairment		R$ 366298	R$ 582259
Depreciation		(682,044)	(665,182)
Loss on disposal		(95,122)	(158,084)
Transfers		(685,775)	(7,553)
Property, plant and equipment, ending		9,495,460
In Service [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment, beginning		10,019,517	6,248,576
Additions/Reversal of impairment		89,050	61,112
Depreciation		(682,044)	(665,182)
Loss on disposal		(86,996)	(142,544)
Transfers		(454,413)	4,517,555
Property, plant and equipment, ending		8,885,114	10,019,517
In Service [member] | Reservoirs, Dams and Aqueducts [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment, beginning		3,676,692	2,426,474
Additions/Reversal of impairment
Depreciation		(195,062)	(188,334)
Loss on disposal			(42)
Transfers		(239)	1,438,594
Property, plant and equipment, ending		3,481,391	3,676,692
In Service [member] | Machinery and Equipment [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment, beginning		6,003,890	2,974,142
Additions/Reversal of impairment
Depreciation		(431,088)	(409,571)
Loss on disposal		(86,550)	(141,902)
Transfers		160,968	3,581,221
Property, plant and equipment, ending		5,024,232	6,003,890
In Service [member] | Buildings [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment, beginning		908,024	479,207
Additions/Reversal of impairment
Depreciation		(42,593)	(52,330)
Loss on disposal		(83)
Transfers		7,227	481,147
Property, plant and equipment, ending		872,575	908,024
In Service [member] | Land [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment, beginning		462,420	357,102
Additions/Reversal of impairment
Depreciation		(10,617)	(9,466)
Loss on disposal		(2)	(463)
Transfers		107	115,247
Property, plant and equipment, ending		451,908	462,420
In Service [member] | Vehicles and Aircraft [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment, beginning		3,084	5,766
Additions/Reversal of impairment
Depreciation		(1,171)	(3,482)
Loss on disposal		(123)	(128)
Transfers		102	928
Property, plant and equipment, ending		1,892	3,084
In Service [member] | Furniture And Tools [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment, beginning		7,949	9,415
Additions/Reversal of impairment
Depreciation		(1,559)	(2,007)
Loss on disposal		(238)	(9)
Transfers		664	550
Property, plant and equipment, ending		6,816	7,949
In Service [member] | Impairment (17.5) [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment, beginning		(961,177)
Additions/Reversal of impairment		35,656
Depreciation
Loss on disposal
Transfers
Property, plant and equipment, ending		(925,521)	(961,177)
In Service [member] | Impairment (17.6) [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment, beginning		(81,322)
Additions/Reversal of impairment		53,394
Depreciation
Loss on disposal
Transfers
Property, plant and equipment, ending		(27,928)	(81,322)
In Service [member] | Special Obligations [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment, beginning		(43)	(41)
Additions/Reversal of impairment
Depreciation		46	8
Loss on disposal
Transfers		(254)	(10)
Property, plant and equipment, ending		(251)	(43)
In Service [member] | Reclassification [member]
Disclosure of detailed information about property, plant and equipment [line items]
Additions/Reversal of impairment	[1]
Depreciation	[1]
Loss on disposal	[1]
Transfers	[1]	(622,988)
Property, plant and equipment, ending		(622,988)
In Service [member] | Impairment [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment, beginning		(1,042,499)	(3,489)
Additions/Reversal of impairment			61,112
Depreciation
Loss on disposal
Transfers			(1,100,122)
Property, plant and equipment, ending			(1,042,499)
In Progress [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment, beginning		572,586	4,592,087
Additions/Reversal of impairment		277,248	521,147
Depreciation
Loss on disposal		(8,126)	(15,540)
Transfers		(231,362)	(4,525,108)
Property, plant and equipment, ending		610,346	572,586
In Progress [member] | Impairment (17.5) [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment, beginning		(122,261)
Additions/Reversal of impairment		1,953
Depreciation
Loss on disposal
Transfers
Property, plant and equipment, ending		(120,308)	(122,261)
In Progress [member] | Impairment (17.6) [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment, beginning		(5,325)
Additions/Reversal of impairment		1,472
Depreciation
Loss on disposal
Transfers
Property, plant and equipment, ending		(3,853)	(5,325)
In Progress [member] | Reclassification [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment, beginning
Additions/Reversal of impairment
Depreciation
Loss on disposal
Transfers		(61,309)
Property, plant and equipment, ending		(61,309)
In Progress [member] | Cost [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment, beginning		700,172	5,789,780
Additions/Reversal of impairment		273,823	551,162
Depreciation
Loss on disposal		(8,126)	(15,540)
Transfers		(170,053)	(5,625,230)
Property, plant and equipment, ending		734,507	700,172
In Progress [member] | Impairment [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment, beginning		R$ 127586	(1,197,693)
Additions/Reversal of impairment			(30,015)
Depreciation
Loss on disposal
Transfers			1,100,122
Property, plant and equipment, ending			R$ 127586
[1]	Reclassification to Assets classified as held for sale (Note 40).

17 Property, Plant and Equipm_4

17 Property, Plant and Equipment (Details 2) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disclosure of joint operations [line items]
Joint operations	R$ 1349434	R$ 1393501
HPP Maua (Consorcio Energetico Cruzeiro do Sul) [member]
Disclosure of joint operations [line items]
Share	51.00%
Joint operations	R$ 649290	670,706
HPP Baixo Iguacu [member]
Disclosure of joint operations [line items]
Share	30.00%
Joint operations	R$ 700144	722,795
In Service [member] | Accumulated Depreciation [member]
Disclosure of joint operations [line items]
Annual average depreciation rate	3.43%
Joint operations	R$ 235454	(206,000)
In Service [member] | HPP Maua (Consorcio Energetico Cruzeiro do Sul) [member]
Disclosure of joint operations [line items]
Joint operations	859,917	859,917
In Service [member] | HPP Baixo Iguacu [member]
Disclosure of joint operations [line items]
Joint operations	R$ 691833		R$ 692593
In Progress [member] | Accumulated Depreciation [member]
Disclosure of joint operations [line items]
Annual average depreciation rate	3.29%
Joint operations	R$ 41803	(19,038)
In Progress [member] | HPP Maua (Consorcio Energetico Cruzeiro do Sul) [member]
Disclosure of joint operations [line items]
Joint operations	24,827	16,789
In Progress [member] | HPP Baixo Iguacu [member]
Disclosure of joint operations [line items]
Joint operations	R$ 50114	R$ 49240

17 Property, Plant and Equipm_5

17 Property, Plant and Equipment (Details 3) - BRL (R$) R$ in Thousands		12 Months Ended
		Dec. 31, 2020		Dec. 31, 2019
Disclosure of detailed information about property, plant and equipment [line items]
Property, Plant and Equipment, Depreciation		R$ 682044		R$ 665182
Property, Plant and Equipment, Impairment		(37,609)		(117,744)
Projects [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property, Plant and Equipment, Cost		4,178,397
Property, Plant and Equipment, Depreciation		(695,049)
Property, Plant and Equipment, Impairment		(1,045,829)
Property, Plant and Equipment, Value in use		2,437,519		4,178,397
Projects [member] | HPP Colider [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property, Plant and Equipment, Cost		2,477,374
Property, Plant and Equipment, Depreciation		(167,432)
Property, Plant and Equipment, Impairment		(683,193)
Property, Plant and Equipment, Value in use		1,626,749		2,477,374
Projects [member] | UEG Araucaria [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property, Plant and Equipment, Cost		701,736
Property, Plant and Equipment, Depreciation		(441,827)
Property, Plant and Equipment, Impairment		(138,777)
Property, Plant and Equipment, Value in use		121,132		701,736
Projects [member] | Power Plants In Parana [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property, Plant and Equipment, Cost		984,823
Property, Plant and Equipment, Depreciation		(85,790)
Property, Plant and Equipment, Impairment		(209,395)
Property, Plant and Equipment, Value in use		689,638		984,823
In Progress [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property, Plant and Equipment, Depreciation
Property, Plant and Equipment, Impairment		(1,953)		24,689
In Progress [member] | HPP Colider [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property, Plant and Equipment, Impairment				482
In Progress [member] | Consorcio Tapajos [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property, Plant and Equipment, Cost	[1]	14,464
Property, Plant and Equipment, Depreciation	[1]
Property, Plant and Equipment, Impairment			[1]
Property, Plant and Equipment, Value in use	[1]	(14,464)		14,464
In Progress [member] | Power Plants In Parana [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property, Plant and Equipment, Impairment		R$ 1953		R$ 21085
[1]	Project under development

17 Property, Plant and Equipm_6

17 Property, Plant and Equipment (Details 4) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2020		Dec. 31, 2019
Disclosure of detailed information about property, plant and equipment [line items]
Gross total	R$ 1083438		R$ 1201182
Impairment at the year	37,609		117,744
Transfer
Recoverable amount at ending	(1,045,829)		(1,083,438)
In Progress [member]
Disclosure of detailed information about property, plant and equipment [line items]
Gross total	(122,261)		(1,197,693)
Impairment at the year	1,953		(24,689)
Transfer			1,100,121
Recoverable amount at ending	(120,308)		(122,261)
In Progress [member] | HPP Colider [member]
Disclosure of detailed information about property, plant and equipment [line items]
Gross total			(731,265)
Impairment at the year			(482)
Transfer			731,747
Recoverable amount at ending
In Progress [member] | Wind Power Complex Cutia [member]
Disclosure of detailed information about property, plant and equipment [line items]
Gross total			(167,875)
Impairment at the year			(373)
Transfer			168,248
Recoverable amount at ending
In Progress [member] | Wind Power Complex Bento Miguel [member]
Disclosure of detailed information about property, plant and equipment [line items]
Gross total			(84,621)
Impairment at the year			(2,749)
Transfer			87,370
Recoverable amount at ending
In Progress [member] | Power Plants In Parana [member]
Disclosure of detailed information about property, plant and equipment [line items]
Gross total	(107,797)		(199,468)
Impairment at the year	1,953		(21,085)
Transfer			112,756
Recoverable amount at ending	(105,844)		(107,797)
In Progress [member] | Consorcio Tapajos [member]
Disclosure of detailed information about property, plant and equipment [line items]
Gross total	(14,464)		(14,464)
Impairment at the year		[1]
Transfer
Recoverable amount at ending	(14,464)		(14,464)
In Service [member]
Disclosure of detailed information about property, plant and equipment [line items]
Gross total	(961,177)		3,489
Impairment at the year	35,656		142,433
Transfer			(1,100,121)
Recoverable amount at ending	(925,521)		(961,177)
In Service [member] | UHE Colider [member]
Disclosure of detailed information about property, plant and equipment [line items]
Gross total	(777,294)
Impairment at the year			(45,547)
Transfer	94,101		(731,747)
Recoverable amount at ending	(683,193)		(777,294)
In Service [member] | Wind Power Complex Cutia [member]
Disclosure of detailed information about property, plant and equipment [line items]
Gross total	(54,104)
Impairment at the year	54,104		114,144
Transfer			(168,248)
Recoverable amount at ending			(54,104)
In Service [member] | UEG Araucaria [member]
Disclosure of detailed information about property, plant and equipment [line items]
Gross total
Impairment at the year	(138,777)
Transfer
Recoverable amount at ending	(138,777)
In Service [member] | Wind Power Complex Bento Miguel [member]
Disclosure of detailed information about property, plant and equipment [line items]
Gross total
Impairment at the year			87,370
Transfer			(87,370)
Recoverable amount at ending
In Service [member] | Power Plants In Parana [member]
Disclosure of detailed information about property, plant and equipment [line items]
Gross total	(129,779)		(3,489)
Impairment at the year	26,228		(13,534)
Transfer			(112,756)
Recoverable amount at ending	R$ 103551		R$ 129779
[1]	Project under development

17 Property, Plant and Equipm_7

17 Property, Plant and Equipment (Details 5) R$ in Thousands	12 Months Ended
	Dec. 31, 2020BRL (R$)
Sao Bento Complex [member] | Wind Power Assets [member]
Disclosure of detailed information about property, plant and equipment [line items]
Discount rate	7.08%	[1]
VR/VC-1	56.04%	[1]
VR/VC-1 (5% Variation)	51.92%	[1]
VR/VC-1 (10% Variation)	47.97%	[1]
Impairment Risk		[1]
Brisa I Complex [member] | Wind Power Assets [member]
Disclosure of detailed information about property, plant and equipment [line items]
Discount rate	7.08%	[2]
VR/VC-1	46.29%	[2]
VR/VC-1 (5% Variation)	42.44%	[2]
VR/VC-1 (10% Variation)	38.76%	[2]
Impairment Risk		[2]
Brisa II Complex [member] | Wind Power Assets [member]
Disclosure of detailed information about property, plant and equipment [line items]
Discount rate	7.08%	[3]
VR/VC-1	50.09%	[3]
VR/VC-1 (5% Variation)	45.45%	[3]
VR/VC-1 (10% Variation)	41.03%	[3]
Impairment Risk		[3]
Bento Miguel Complex [member] | Wind Power Assets [member]
Disclosure of detailed information about property, plant and equipment [line items]
Discount rate	7.08%	[4]
VR/VC-1	5.79%	[4]
VR/VC-1 (5% Variation)	2.35%	[4]
VR/VC-1 (10% Variation)	(0.91%)	[4]
Impairment Risk	R$ 7254	[4]
Foz Do Areia [member] | Hydric Assets [member]
Disclosure of detailed information about property, plant and equipment [line items]
Discount rate	5.70%
VR/VC-1	153.23%
VR/VC-1 (5% Variation)	152.06%
VR/VC-1 (10% Variation)	150.91%
Impairment Risk
Segredo [member] | Hydric Assets [member]
Disclosure of detailed information about property, plant and equipment [line items]
Discount rate	5.70%
VR/VC-1	189.54%
VR/VC-1 (5% Variation)	185.33%
VR/VC-1 (10% Variation)	181.21%
Impairment Risk
Caxias [member] | Hydric Assets [member]
Disclosure of detailed information about property, plant and equipment [line items]
Discount rate	5.70%
VR/VC-1	138.68%
VR/VC-1 (5% Variation)	134.97%
VR/VC-1 (10% Variation)	131.33%
Impairment Risk
Guaricana [member] | Hydric Assets [member]
Disclosure of detailed information about property, plant and equipment [line items]
Discount rate	5.70%
VR/VC-1	27.44%
VR/VC-1 (5% Variation)	26.28%
VR/VC-1 (10% Variation)	25.14%
Impairment Risk
Chamine [member] | Hydric Assets [member]
Disclosure of detailed information about property, plant and equipment [line items]
Discount rate	5.70%
VR/VC-1	68.26%
VR/VC-1 (5% Variation)	66.71%
VR/VC-1 (10% Variation)	65.17%
Impairment Risk
Apucaraninha [member] | Hydric Assets [member]
Disclosure of detailed information about property, plant and equipment [line items]
Discount rate	5.70%
VR/VC-1	38.39%
VR/VC-1 (5% Variation)	37.10%
VR/VC-1 (10% Variation)	35.82%
Impairment Risk
Chopim I [member] | Hydric Assets [member]
Disclosure of detailed information about property, plant and equipment [line items]
Discount rate	5.70%
VR/VC-1	158.47%
VR/VC-1 (5% Variation)	152.77%
VR/VC-1 (10% Variation)	147.25%
Impairment Risk
Maua [member] | Hydric Assets [member]
Disclosure of detailed information about property, plant and equipment [line items]
Discount rate	5.70%
VR/VC-1	88.81%
VR/VC-1 (5% Variation)	84.52%
VR/VC-1 (10% Variation)	80.38%
Impairment Risk
Cavernoso [member] | Hydric Assets [member]
Disclosure of detailed information about property, plant and equipment [line items]
Discount rate	5.70%
VR/VC-1	754.19%
VR/VC-1 (5% Variation)	740.28%
VR/VC-1 (10% Variation)	726.70%
Impairment Risk
Cavernoso II [member] | Hydric Assets [member]
Disclosure of detailed information about property, plant and equipment [line items]
Discount rate	5.70%
VR/VC-1	13.53%
VR/VC-1 (5% Variation)	10.72%
VR/VC-1 (10% Variation)	8.01%
Impairment Risk
Bela Vista [member] | Hydric Assets [member]
Disclosure of detailed information about property, plant and equipment [line items]
Discount rate	5.70%
VR/VC-1	44.01%
VR/VC-1 (5% Variation)	38.29%
VR/VC-1 (10% Variation)	32.89%
Impairment Risk
Elejor [member] | Hydric Assets [member]
Disclosure of detailed information about property, plant and equipment [line items]
Discount rate	5.00%
VR/VC-1	67.71%
VR/VC-1 (5% Variation)	65.01%
VR/VC-1 (10% Variation)	59.54%
Impairment Risk
[1]	Contemplates the GE Boa Vista, GE Farol, GE Olho D'Agua e GE Sao Bento do Norte wind farms.
[2]	Contemplates theNova Asa Branca I, Nova Asa Branca II, Nova Asa Branca III e Nova Eurus IV wind farms.
[3]	Contemplates theSanta Maria, Santa Helena e Ventos de Santo Uriel wind farms.
[4]	Contemplates Sao Bento do Norte I, Sao Bento do Norte II, Sao Bento do Norte III, Sao Miguel I, Sao Miguel II andGE Sao Miguel III wind farms.

17 Property, Plant and Equipm_8

17 Property, Plant and Equipment (Details 6)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Generation [member] | General Equipment [member]
Disclosure of detailed information about property, plant and equipment [line items]
Average rate of depreciation	6.26%	6.33%	6.25%
Generation [member] | Machinery and Equipment [member]
Disclosure of detailed information about property, plant and equipment [line items]
Average rate of depreciation	3.39%	3.67%	3.56%
Generation [member] | Generators [member]
Disclosure of detailed information about property, plant and equipment [line items]
Average rate of depreciation	3.73%	3.38%	3.34%
Generation [member] | Reservoirs, Dams and Aqueducts [member]
Disclosure of detailed information about property, plant and equipment [line items]
Average rate of depreciation	2.68%	2.50%	2.21%
Generation [member] | Hydraulic Turbines [member]
Disclosure of detailed information about property, plant and equipment [line items]
Average rate of depreciation	2.93%	2.89%	2.60%
Generation [member] | Gas and Steam Turbines [member]
Disclosure of detailed information about property, plant and equipment [line items]
Average rate of depreciation	2.00%	2.00%	2.00%
Generation [member] | Water Cooling and Treatment [member]
Disclosure of detailed information about property, plant and equipment [line items]
Average rate of depreciation	4.00%	4.00%	4.00%
Generation [member] | Gas Conditioner [member]
Disclosure of detailed information about property, plant and equipment [line items]
Average rate of depreciation	4.00%	4.00%	4.00%
Generation [member] | Wind Power Plant Unit [member]
Disclosure of detailed information about property, plant and equipment [line items]
Average rate of depreciation	4.94%	5.49%	3.71%
Central Management [member] | Buildings [member]
Disclosure of detailed information about property, plant and equipment [line items]
Average rate of depreciation	3.35%	3.35%	3.35%
Central Management [member] | Machinery and Office Equipment [member]
Disclosure of detailed information about property, plant and equipment [line items]
Average rate of depreciation	6.25%	6.25%	6.25%
Central Management [member] | Furniture and Fixtures [member]
Disclosure of detailed information about property, plant and equipment [line items]
Average rate of depreciation	6.25%	6.25%	6.25%
Central Management [member] | Vehicles [member]
Disclosure of detailed information about property, plant and equipment [line items]
Average rate of depreciation	14.29%	14.29%	14.29%
Telecommunications [member] | Infrastructure Last Mile [member] | Bottom Of Range [member]
Disclosure of detailed information about property, plant and equipment [line items]
Average rate of depreciation	17.00%	17.00%	3.00%
Telecommunications [member] | Infrastructure Last Mile [member] | Top Of Range [member]
Disclosure of detailed information about property, plant and equipment [line items]
Average rate of depreciation	25.00%	25.00%	17.00%
Telecommunications [member] | Other Infrastructure Equipment[member] | Bottom Of Range [member]
Disclosure of detailed information about property, plant and equipment [line items]
Average rate of depreciation	7.00%	7.00%	7.00%
Telecommunications [member] | Other Infrastructure Equipment[member] | Top Of Range [member]
Disclosure of detailed information about property, plant and equipment [line items]
Average rate of depreciation	20.00%	20.00%	20.00%
Telecommunications [member] | Infrastructure backbone [member] | Bottom Of Range [member]
Disclosure of detailed information about property, plant and equipment [line items]
Average rate of depreciation	3.00%	3.00%	3.00%
Telecommunications [member] | Infrastructure backbone [member] | Top Of Range [member]
Disclosure of detailed information about property, plant and equipment [line items]
Average rate of depreciation	5.00%	5.00%	5.00%

17 Property, Plant and Equipm_9

17 Property, Plant and Equipment (Details Narrative) - BRL (R$) R$ in Thousands	Oct. 18, 2020	Aug. 31, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disclosure of detailed information about property, plant and equipment [line items]
Borrowings and debentures			R$ 1046	R$ 4295	R$ 4229
Average interest rate			0.04%	0.11%	0.11%
Total investment			R$ 2729517
Jandaira Wind Complex [member]
Disclosure of detailed information about property, plant and equipment [line items]
Total investment			R$ 411610
New plants under construction	led to sale of 14.4 MW mean in regulated contracts at the original price of R$ 98.00/MWh.		with installed capacity of 90.1 MW and physical guarantee of 47.6 MW mean
Power Plants Of Parana [member] | Figueira Thermoelectric Plant [member]
Disclosure of detailed information about property, plant and equipment [line items]
Pre-tax discount rate			5.70%	5.45%
Power Plants Of Parana [member] | Other plants [member]
Disclosure of detailed information about property, plant and equipment [line items]
Pre-tax discount rate			5.70%	5.45%
Cash-generating units that have suffered no impairment [member]
Disclosure of detailed information about property, plant and equipment [line items]
Pre-tax discount rate			5.00%	10.00%
UHE Colider [member]
Disclosure of detailed information about property, plant and equipment [line items]
Pre-tax discount rate			5.70%	5.45%
Cutia Complex and Bento Miguel Complex [member]
Disclosure of detailed information about property, plant and equipment [line items]
Pre-tax discount rate			7.08%	7.24%
UEG Araucaria [member]
Disclosure of detailed information about property, plant and equipment [line items]
Pre-tax discount rate			7.87%	7.76%
SHPP Bela Vista [member]
Disclosure of detailed information about property, plant and equipment [line items]
Total investment			R$ 220000
New plants under construction		led to sale of 14.7 MW mean in regulated contracts at the original price of R$ 195.70/MWh.	installed capacity of 29.81 MW and physical guarantee of 18.4 MW mean

18 Intangible assets (Details)

18 Intangible assets (Details) - BRL (R$) R$ in Thousands	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disclosure of detailed information about intangible assets [line items]
Intangible Assets	R$ 6929456	R$ 6332611
Distribution Concession Agreement [member]
Disclosure of detailed information about intangible assets [line items]
Intangible Assets	6,203,387	5,703,686
Generation Concession Agreement [member]
Disclosure of detailed information about intangible assets [line items]
Intangible Assets	553,840	582,671	R$ 593852
Gas Distribution [member]
Disclosure of detailed information about intangible assets [line items]
Intangible Assets	132,366		R$ 3619
Other [member]
Disclosure of detailed information about intangible assets [line items]
Intangible Assets	R$ 39863	R$ 46254

18 Intangible assets (Details 1

18 Intangible assets (Details 1) - BRL (R$) R$ in Thousands		12 Months Ended
		Dec. 31, 2020		Dec. 31, 2019
Disclosure of detailed information about intangible assets [line items]
Intangible assets, beginning		R$ 6332611
Loss on disposal		(52,811)
Intangible assets, ending		6,929,456		R$ 6332611
Distribution Concession Agreement in Service [member]
Disclosure of detailed information about intangible assets [line items]
Intangible assets, beginning		8,487,265		8,212,792
Incorporations				2,625
Amortization of quotas - concession and authorization	[1]	(485,677)		(461,370)
Amortization of quotas - PIS/Pasep and Cofins credits		(10,655)		(10,740)
Loss on disposal		(52,656)		(26,359)
Transfers to other receivables		(1,372)		(1,520)
Transfers to investments				(7)
Transfers from contract assets		1,016,482		771,844
Transfers from accounts receivable - concessions		99
Intangible assets, ending		8,953,486		8,487,265
Distribution Concession Agreement Special Liabilities in Service [member]
Disclosure of detailed information about intangible assets [line items]
Intangible assets, beginning		(2,783,579)		(2,822,729)
Incorporations				(2,550)
Amortization of quotas - concession and authorization	[1]	138,596		134,864
Transfers from contract assets		(105,116)		(93,164)
Intangible assets, ending		(2,750,099)		(2,783,579)
Distribution Concession Agreement [member]
Disclosure of detailed information about intangible assets [line items]
Intangible assets, beginning		5,703,686		5,390,063
Incorporations				75
Amortization of quotas - concession and authorization	[1]	347,081		326,506
Amortization of quotas - PIS/Pasep and Cofins credits		(10,655)		(10,740)
Loss on disposal		(52,656)		(26,359)
Transfers to other receivables		(1,372)		(1,520)
Transfers to investments				(7)
Transfers from contract assets		911,366		678,680
Transfers from accounts receivable - concessions		99
Intangible assets, ending		6,203,387		5,703,686
Generation Concession Agreement in Service [member]
Disclosure of detailed information about intangible assets [line items]
Intangible assets, beginning		209,467		226,411
Capitalizations for intangible in service		3,682
Amortization of quotas - concession and authorization	[2]	(17,527)		(16,944)
ANEEL grant - use of public property
Business combination (Note 1.2)
Intangible assets, ending		195,622		209,467
Generation Concession Agreement in Progress [member]
Disclosure of detailed information about intangible assets [line items]
Intangible assets, beginning	[3]
Capitalizations for intangible in service	[3]	(3,682)
Amortization of quotas - concession and authorization	[2],[3]
ANEEL grant - use of public property	[3]	3,682
Business combination (Note 1.2)	[3]
Intangible assets, ending	[3]
Generation Concession Agreement Concession Authorization Rights [member]
Disclosure of detailed information about intangible assets [line items]
Intangible assets, beginning		373,204		367,441
Capitalizations for intangible in service
Amortization of quotas - concession and authorization	[2]	(14,986)		(14,350)
Business combination (Note 1.2)				20,113
Intangible assets, ending		358,218		373,204
Generation Concession Agreement [member]
Disclosure of detailed information about intangible assets [line items]
Intangible assets, beginning		582,671		593,852
Amortization of quotas - concession and authorization	[2]	(32,513)		(31,294)
ANEEL grant - use of public property		3,682
Business combination (Note 1.2)				20,113
Intangible assets, ending		553,840		582,671
Gas Distribution [member]
Disclosure of detailed information about intangible assets [line items]
Intangible assets, beginning				3,619
Amortization of quotas - concession and authorization		(29,243)	[4]	(28,454)
Loss on disposal		151
Transfers from contract assets		7,277
Transfers from accounts receivable - concessions		154,483		24,835
Intangible assets, ending		132,366
Other in Service [member]
Disclosure of detailed information about intangible assets [line items]
Intangible assets, beginning		31,620		25,630
Acquisitions		128
Transfers from property, plant and equipment		229		(1,471)
Capitalizations for intangible in service		7,136		16,118
Amortization of quotas - concession and authorization	[4]	(11,584)		(8,646)
Amortization of quotas - PIS/Pasep and Cofins credits		(13)		(11)
Loss on disposal
Reclassification	[1]
Intangible assets, ending		19,209		31,620
Other in Progress [member]
Disclosure of detailed information about intangible assets [line items]
Intangible assets, beginning		14,634		15,933
Acquisitions		10,863		5,032
Transfers from property, plant and equipment		2,932		10,217
Capitalizations for intangible in service		(7,136)		(16,118)
Loss on disposal		4		430
Reclassification	[1]	(635)
Intangible assets, ending		20,654		14,634
Other [member]
Disclosure of detailed information about intangible assets [line items]
Intangible assets, beginning		46,254		41,563
Acquisitions		10,991		5,032
Transfers from property, plant and equipment		3,161		8,746
Amortization of quotas - concession and authorization	[4]	(11,584)		8,646
Amortization of quotas - PIS/Pasep and Cofins credits		(13)		(11)
Loss on disposal		4		430
Reclassification	[1]	(8,942)
Intangible assets, ending		R$ 39863		R$ 46254
[1]	Reclassification to Assets classified as held for sale (Note 40).
[2]	Amortization during the concession/authorization as of the start of commercial operations of the enterprises.
[3]	Includes the balances of use of public asset and hydrological risk renegotiation
[4]	Annual amortization rate: 20%.

19 Payroll, Social Charges an_3

19 Payroll, Social Charges and Accruals (Details) - BRL (R$) R$ in Thousands	Dec. 31, 2020	Dec. 31, 2019
DisclosureOfPayrollSocialChargesAndAccrualsLineItems [Line Items]
Payroll, social charges and accruals	R$ 684046	R$ 337044
Social security liabilities [member]
DisclosureOfPayrollSocialChargesAndAccrualsLineItems [Line Items]
Payroll, social charges and accruals	72,490	76,204
Social security liabilities [member] | Taxes and social contribution [member]
DisclosureOfPayrollSocialChargesAndAccrualsLineItems [Line Items]
Payroll, social charges and accruals	42,748	47,022
Social security liabilities [member] | Social security charges on paid vacation and 13th salary [member]
DisclosureOfPayrollSocialChargesAndAccrualsLineItems [Line Items]
Payroll, social charges and accruals	29,742	29,182
Labor liabilities [member]
DisclosureOfPayrollSocialChargesAndAccrualsLineItems [Line Items]
Payroll, social charges and accruals	611,556	260,840
Labor liabilities [member] | Payroll, net [member]
DisclosureOfPayrollSocialChargesAndAccrualsLineItems [Line Items]
Payroll, social charges and accruals		3,330
Labor liabilities [member] | Vacation and 13th salary [member]
DisclosureOfPayrollSocialChargesAndAccrualsLineItems [Line Items]
Payroll, social charges and accruals	100,175	98,648
Labor liabilities [member] | Provisons by performance and profit sharing [member]
DisclosureOfPayrollSocialChargesAndAccrualsLineItems [Line Items]
Payroll, social charges and accruals	483,110	156,040
Labor liabilities [member] | Voluntary retirement program [member]
DisclosureOfPayrollSocialChargesAndAccrualsLineItems [Line Items]
Payroll, social charges and accruals	28,071	2,820
Labor liabilities [member] | Other liabilities [member]
DisclosureOfPayrollSocialChargesAndAccrualsLineItems [Line Items]
Payroll, social charges and accruals	R$ 200	R$ 2

20 Accounts Payable to Suppli_3

20 Accounts Payable to Suppliers (Details) - BRL (R$) R$ in Thousands	Dec. 31, 2020	Dec. 31, 2019
DisclosureOfAccountsPayableToSuppliersLineItems [Line Items]
Suppliers	R$ 2436452	R$ 1873193
Suppliers, current	2,291,307	1,685,280
Suppliers, noncurrent	145,145	187,913
Energy supplies [member]
DisclosureOfAccountsPayableToSuppliersLineItems [Line Items]
Suppliers	1,393,899	1,085,777
Materials And Supplies [member]
DisclosureOfAccountsPayableToSuppliersLineItems [Line Items]
Suppliers	671,458	520,647
Natural gas for resale [member]
DisclosureOfAccountsPayableToSuppliersLineItems [Line Items]
Suppliers	38,574	79,174
Charges for use of grid system [member]
DisclosureOfAccountsPayableToSuppliersLineItems [Line Items]
Suppliers	R$ 332521	R$ 187595

21 Loans and Financing (Details

21 Loans and Financing (Details) - BRL (R$) R$ in Thousands		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disclosure of detailed information about borrowings [line items]
Final maturity		The term of these securities ranges from 4 to 51 months from the end of the reporting period.
Loans and financing		R$ 3188531	R$ 3142383	R$ 4047307
Gross debt		3,214,249	3,168,710
Transaction cost		(25,718)	(26,327)
Net debt		3,188,531	3,142,383
Loans and financing, current		717,677	255,521
Loans and financing, noncurrent		2,470,854	2,886,862
Foreign Currency [member]
Disclosure of detailed information about borrowings [line items]
Loans and financing		140,337	108,983	104,751
Loans and financing, noncurrent		R$ 103646
Foreign Currency [member] | National Treasury Department (STN - Secretaria do Tesouro Nacional) [member] | Par Bond [member]
Disclosure of detailed information about borrowings [line items]
Contract		Par Bond
Company		Copel
Allocation		Debt negotiation
Guarantees		Guarantees deposited (21.1).
Issue date		May 20, 1998
Number of installments		1
Final maturity		Apr. 11, 2024
Finance charges		Half-yearly
Contractual financial charges p.y.		6.0% + 0.20%
Effective interest rate p.y.		6.0% + 0.20%
Contract amount		R$ 17315
Loans and financing		R$ 82933	64,325
Foreign Currency [member] | National Treasury Department (STN - Secretaria do Tesouro Nacional) [member] | Discount Bond [member]
Disclosure of detailed information about borrowings [line items]
Contract		Discount Bond
Company		Copel
Allocation		Debt negotiation
Guarantees		Guarantees deposited (21.1).
Issue date		May 20, 1998
Number of installments		1
Final maturity		Apr. 11, 2024
Finance charges		Half-yearly
Contractual financial charges p.y.		2.8125% + 0,20%
Effective interest rate p.y.		2.8125% + 0,20%
Contract amount		R$ 12082
Loans and financing		57,404	44,658
Local Currency [member]
Disclosure of detailed information about borrowings [line items]
Loans and financing		3,048,194	3,033,400	R$ 3942556
Loans and financing, noncurrent		R$ 2830614
Local Currency [member] | Promissory Notes [member]
Disclosure of detailed information about borrowings [line items]
Contract		Promissory notes
Company		Copel GeT
Allocation		Payment of the first installment of debentures and cash enhancement of Copel Get.
Guarantees		Surety of Copel.
Issue date		May 12, 2017
Number of installments		1
Final maturity		May 12, 2019
Finance charges		Single installment
Contractual financial charges p.y.		117% of DI
Effective interest rate p.y.		117% of DI
Local Currency [member] | Banco Do Brasil [member]
Disclosure of detailed information about borrowings [line items]
Loans and financing		R$ 640177	679,976
Local Currency [member] | Banco Do Brasil [member] | CCB 306.401.381 [member]
Disclosure of detailed information about borrowings [line items]
Contract	[1]	CCB 306.401.381
Company		Copel HOL
Allocation		Working Capital
Guarantees		Credit assignment
Issue date		Dec. 19, 2019
Number of installments		5
Final maturity		Mar. 25, 2022
Finance charges		Quarterly
Contractual financial charges p.y.		120.00% of DI
Effective interest rate p.y.		126.99% of DI
Contract amount		R$ 640005
Loans and financing		R$ 640177
Local Currency [member] | Banco Do Brasil [member] | NCI 306.401.445 [member]
Disclosure of detailed information about borrowings [line items]
Contract		NCI 306.401.445
Company		Copel HOL
Allocation		Working Capital
Guarantees		Credit assignment
Issue date		Feb. 24, 2017
Number of installments		2
Final maturity		Feb. 15, 2020
Finance charges		Half-yearly
Contractual financial charges p.y.		124.5% of DI
Effective interest rate p.y.		136.15% of DI
Contract amount		R$ 77000
Loans and financing			640,530
Local Currency [member] | Banco Do Brasil [member] | Contract [member]
Disclosure of detailed information about borrowings [line items]
Loans and financing			39,446
Local Currency [member] | Eletrobras [member]
Disclosure of detailed information about borrowings [line items]
Loans and financing			10,934
Local Currency [member] | Eletrobras [member] | 983/95 [member]
Disclosure of detailed information about borrowings [line items]
Contract		983/95
Allocation		National Program for Watering - Proni.
Guarantees		Own revenue; issue of promissory notes and commercial duplicates.
Issue date		Dec. 22, 1994
Number of installments		80
Final maturity		Nov. 15, 2020
Finance charges		Quarterly
Contractual financial charges p.y.		8.00%
Effective interest rate p.y.		8.00%
Contract amount		R$ 11
Loans and financing			26
Local Currency [member] | Eletrobras [member] | 984/95 [member]
Disclosure of detailed information about borrowings [line items]
Contract		984/95
Allocation		National Program for Watering - Proni.
Guarantees		Own revenue; issue of promissory notes and commercial duplicates.
Issue date		Dec. 22, 1994
Number of installments		80
Final maturity		Nov. 15, 2020
Finance charges		Quarterly
Contractual financial charges p.y.		8.00%
Effective interest rate p.y.		8.00%
Contract amount		R$ 14
Loans and financing			11
Local Currency [member] | Eletrobras [member] | 985/95 [member]
Disclosure of detailed information about borrowings [line items]
Contract		985/95
Issue date		Dec. 22, 1994
Number of installments		80
Final maturity		Aug. 15, 2021
Finance charges		Quarterly
Contractual financial charges p.y.		8.00%
Effective interest rate p.y.		8.00%
Contract amount		R$ 61
Loans and financing			11
Local Currency [member] | Eletrobras [member] | 206/07 [member]
Disclosure of detailed information about borrowings [line items]
Contract		206/07
Allocation		Rural Electricity Program - Luz para Todos.
Issue date		Mar. 3, 2008
Number of installments		120
Final maturity		Aug. 30, 2020
Finance charges		Monthly
Contractual financial charges p.y.		5.0% + 1.0%
Effective interest rate p.y.		5.05%
Contract amount		R$ 109642
Loans and financing			5,953
Local Currency [member] | Eletrobras [member] | 273/09 [member]
Disclosure of detailed information about borrowings [line items]
Contract		273/09
Allocation		Rural Electricity Program - Luz para Todos.
Issue date		Feb. 18, 2010
Number of installments		120
Final maturity		Dec. 30, 2022
Finance charges		Monthly
Contractual financial charges p.y.		5.0% + 1.0%
Effective interest rate p.y.		5.0% + 1.0%
Contract amount		R$ 63944
Loans and financing			4,933
Local Currency [member] | Caixa Econonica Federal [member]
Disclosure of detailed information about borrowings [line items]
Loans and financing		R$ 11661	13,741
Local Currency [member] | Caixa Econonica Federal [member] | 415.855-22/14 [member]
Disclosure of detailed information about borrowings [line items]
Contract		415.855-22/14
Company		Copel DIS
Allocation		Rural Electricity Program - Luz para Todos.
Guarantees		Own revenue; issue of promissory notes and commercial duplicates.
Issue date		Mar. 31, 2015
Number of installments		120
Final maturity		Dec. 8, 2026
Finance charges		Monthly
Contractual financial charges p.y.		6.00%
Effective interest rate p.y.		6.00%
Contract amount		R$ 16984
Loans and financing		R$ 11496	13,410
Local Currency [member] | Caixa Econonica Federal [member] | 3153-352 [member]
Disclosure of detailed information about borrowings [line items]
Contract		3153-352
Company		Copel DIS
Allocation		Acquisition of machinery, equipment and IT and automation equipment.
Guarantees		Assignment of trade notes receivable.
Issue date		Nov. 1, 2016
Number of installments		36
Final maturity		Dec. 15, 2021
Finance charges		Monthly
Contractual financial charges p.y.		5.5 % above TJLP
Effective interest rate p.y.		5.5 % above TJLP
Contract amount		R$ 1156
Loans and financing		165	331
Local Currency [member] | Finep [member]
Disclosure of detailed information about borrowings [line items]
Loans and financing			4,845
Local Currency [member] | Finep [member] | 21120105-00 [member]
Disclosure of detailed information about borrowings [line items]
Contract		21120105-00
Company		Copel Tel
Allocation		BEL project - ultra wide band intranet service (Ultra Wide Band - UWB).
Guarantees		Lock of proceeds received in current account.
Issue date		Jul. 17, 2012
Number of installments		81
Final maturity		Oct. 15, 2020
Finance charges		Monthly
Contractual financial charges p.y.		4.00%
Effective interest rate p.y.		4.39%
Contract amount
Loans and financing			2,626
Local Currency [member] | Finep [member] | 21120105-00 [member]
Disclosure of detailed information about borrowings [line items]
Contract		21120105-00
Company		Copel Tel
Allocation		BEL project - ultra wide band intranet service (Ultra Wide Band - UWB).
Guarantees		Lock of proceeds received in current account.
Issue date		Jul. 17, 2012
Number of installments		81
Final maturity		Oct. 15, 2020
Finance charges		Monthly
Contractual financial charges p.y.		3.5% + TR
Effective interest rate p.y.		3.88% + TR
Contract amount
Loans and financing			2,219
Local Currency [member] | BNDES [member]
Disclosure of detailed information about borrowings [line items]
Loans and financing			2,338,138
Local Currency [member] | BNDES [member] | 820989.1 [member]
Disclosure of detailed information about borrowings [line items]
Contract		820989.1
Company		Copel GeT
Allocation		Implementation of Mauá HPP.
Guarantees		Revenue from energy sales from the plant.
Issue date		Mar. 17, 2009
Number of installments		179
Final maturity		Jan. 15, 2028
Finance charges		Monthly
Contractual financial charges p.y.		1.63% above TJLP
Effective interest rate p.y.		1.63% above TJLP
Contract amount		R$ 169500
Loans and financing		R$ 95807	107,324
Local Currency [member] | BNDES [member] | 1120952.1 [member]
Disclosure of detailed information about borrowings [line items]
Contract		1120952.1
Company		Copel GeT
Allocation		Implementation of transmission line between Foz do Iguaçu and Cascavel Oeste substations.
Guarantees		Assignment of receivables; revenue from energy transmission services.
Issue date		Dec. 16, 2011
Number of installments		168
Final maturity		Apr. 15, 2026
Finance charges		Monthly
Contractual financial charges p.y.		1.82% and 1.42% above TJLP
Effective interest rate p.y.		1.82% and 1.42% above TJLP
Contract amount		R$ 44723
Loans and financing		R$ 17756	21,090
Local Currency [member] | BNDES [member] | 1220768.1 [member]
Disclosure of detailed information about borrowings [line items]
Contract		1220768.1
Company		Copel GeT
Allocation		Implementation of Cavernoso II SHP.
Guarantees		Revenue from energy sales from the plant.
Issue date		Sep. 28, 2012
Number of installments		192
Final maturity		Jul. 15, 2029
Finance charges		Monthly
Contractual financial charges p.y.		1.36% above TJLP
Effective interest rate p.y.		1.36% above TJLP
Contract amount		R$ 73122
Loans and financing		R$ 41405	46,240
Local Currency [member] | BNDES [member] | 13211061 [member]
Disclosure of detailed information about borrowings [line items]
Contract		13211061
Company		Copel GeT
Allocation		Implementation of Colíder HPP.
Guarantees		Assignment of receivables
Issue date		Dec. 4, 2013
Number of installments		192
Final maturity		Oct. 15, 2031
Finance charges		Monthly
Contractual financial charges p.y.		0% and 1.49% above TJLP
Effective interest rate p.y.		6.43% and 7.68%
Contract amount		R$ 1041155
Loans and financing		R$ 748083	817,329
Local Currency [member] | BNDES [member] | 13210331 [member]
Disclosure of detailed information about borrowings [line items]
Contract		13210331
Company		Copel GeT
Allocation		Implementation of Cerquilho III substation.
Guarantees		Assignment of receivables
Issue date		Dec. 3, 2013
Number of installments		168
Final maturity		Aug. 15, 2028
Finance charges		Monthly
Contractual financial charges p.y.		1.49% and 1.89% above TJLP
Effective interest rate p.y.		1.49% and 1.89% above TJLP
Contract amount		R$ 17644
Loans and financing		R$ 10069	11,385
Local Currency [member] | BNDES [member] | 15206041 [member]
Disclosure of detailed information about borrowings [line items]
Contract		15206041
Company		Copel GeT
Allocation		Implementation of transmission line Assis - Paraguaçu Paulista II.
Guarantees		Assignment of receivables
Issue date		Dec. 28, 2015
Number of installments		168
Final maturity		Jun. 15, 2030
Finance charges		Monthly
Contractual financial charges p.y.		2.42% above TJLP
Effective interest rate p.y.		9.04%
Contract amount		R$ 34265
Loans and financing		R$ 20280	22,419
Local Currency [member] | BNDES [member] | 15205921 [member]
Disclosure of detailed information about borrowings [line items]
Contract		15205921
Company		Copel GeT
Allocation		Implementation of transmission lines Londrina - Figueira and Salto Osório - Foz do Chopim.
Guarantees		Assignment of receivables
Issue date		Dec. 28, 2015
Number of installments		168
Final maturity		Dec. 15, 2029
Finance charges		Monthly
Contractual financial charges p.y.		2.32% above TJLP
Effective interest rate p.y.		8.93%
Contract amount		R$ 21584
Loans and financing		R$ 12171	13,526
Local Currency [member] | BNDES [member] | 18205101 [member]
Disclosure of detailed information about borrowings [line items]
Contract		18205101
Company		Copel GeT
Allocation		Implementation of Baixo Iguaçu HPP.
Guarantees		Assignment of receivables
Issue date		Nov. 22, 2018
Number of installments		192
Final maturity		Jun. 15, 2035
Finance charges		Monthly
Contractual financial charges p.y.		1.94% above TJLP
Effective interest rate p.y.		8.50%
Contract amount		R$ 194000
Loans and financing		R$ 184087	196,827
Local Currency [member] | BNDES [member] | 14205611-A [member]
Disclosure of detailed information about borrowings [line items]
Contract		14205611-A
Company		Copel DIS
Allocation		Preservation of business, improvements, operating support and general investments in the expansion and consolidation of projects and social investment programs of companies (ISE).
Guarantees		Surety of Copel; assignment of revenues and indemnity rights under the concession.
Issue date		Dec. 15, 2014
Number of installments		72
Final maturity		Jan. 15, 2021
Finance charges		Monthly
Contractual financial charges p.y.		2.09% above TJLP
Effective interest rate p.y.		8.37%
Contract amount		R$ 41583
Loans and financing		R$ 585	7,611
Local Currency [member] | BNDES [member] | 14205611-B [member]
Disclosure of detailed information about borrowings [line items]
Contract		14205611-B
Company		Copel DIS
Allocation		Preservation of business, improvements, operating support and general investments in the expansion and consolidation of projects and social investment programs of companies (ISE).
Guarantees		Surety of Copel; assignment of revenues and indemnity rights under the concession.
Issue date		Dec. 15, 2014
Number of installments		6
Final maturity		Feb. 15, 2021
Finance charges		Annual
Contractual financial charges p.y.		2.09 above TR BNDES
Effective interest rate p.y.		2.09 above TR BNDES
Contract amount		R$ 17821
Loans and financing		R$ 4329	8,288
Local Currency [member] | BNDES [member] | 14205611-C [member]
Disclosure of detailed information about borrowings [line items]
Contract		14205611-C
Company		Copel DIS
Allocation		Preservation of business, improvements, operating support and general investments in the expansion and consolidation of projects and social investment programs of companies (ISE).
Guarantees		Surety of Copel; assignment of revenues and indemnity rights under the concession.
Issue date		Dec. 15, 2014
Number of installments		113
Final maturity		Jun. 15, 2024
Finance charges		Monthly
Contractual financial charges p.y.		6.00%
Effective interest rate p.y.		6.00%
Contract amount		R$ 78921
Loans and financing		R$ 27434	35,267
Local Currency [member] | BNDES [member] | 14205611-D [member]
Disclosure of detailed information about borrowings [line items]
Contract		14205611-D
Company		Copel DIS
Allocation		Preservation of business, improvements, operating support and general investments in the expansion and consolidation of projects and social investment programs of companies (ISE).
Guarantees		Surety of Copel; assignment of revenues and indemnity rights under the concession.
Issue date		Dec. 15, 2014
Number of installments		57
Final maturity		Feb. 15, 2021
Finance charges		Monthly
Contractual financial charges p.y.		TJLP
Effective interest rate p.y.		TJLP
Contract amount		R$ 750
Loans and financing		R$ 2	11
Local Currency [member] | BNDES [member] | 14.2.1271.1 [member]
Disclosure of detailed information about borrowings [line items]
Contract		14.2.1271.1
Company		Santa Maria
Allocation		Construction and implementation of wind generating plants.
Guarantees		Surety of Copel; pledge of shares; assignment of receivables and revenues.
Issue date		Jun. 1, 2015
Number of installments		192
Final maturity		Aug. 15, 2031
Finance charges		Monthly
Contractual financial charges p.y.		1.66% above TJLP
Effective interest rate p.y.		8.26%
Contract amount		R$ 71676
Loans and financing		R$ 41665	45,582
Local Currency [member] | BNDES [member] | 14.2.1272.1 [member]
Disclosure of detailed information about borrowings [line items]
Contract		14.2.1272.1
Company		Santa Helena
Allocation		Construction and implementation of wind generating plants.
Guarantees		Surety of Copel; pledge of shares; assignment of receivables and revenues.
Issue date		Jun. 1, 2015
Number of installments		192
Final maturity		Aug. 15, 2031
Finance charges		Monthly
Contractual financial charges p.y.		1.66% above TJLP
Effective interest rate p.y.		8.26%
Contract amount		R$ 82973
Loans and financing		R$ 45208	49,458
Local Currency [member] | BNDES [member] | 11211521 [member]
Disclosure of detailed information about borrowings [line items]
Contract		11211521
Company		GE Farol
Allocation		Construction and implementation of wind generating plants.
Guarantees		Pledge of shares; assignment of receivables from energy sales from the project; assignment of machinery and equipment.
Issue date		Mar. 19, 2012
Number of installments		192
Final maturity		Jun. 15, 2030
Finance charges		Monthly
Contractual financial charges p.y.		2.34% above TJLP
Effective interest rate p.y.		2.34% above TJLP
Contract amount		R$ 54100
Loans and financing		R$ 37470	41,388
Local Currency [member] | BNDES [member] | 11211531 [member]
Disclosure of detailed information about borrowings [line items]
Contract		11211531
Company		GE Boa Vista
Allocation		Construction and implementation of wind generating plants.
Guarantees		Pledge of shares; assignment of receivables from energy sales from the project; assignment of machinery and equipment.
Issue date		Mar. 19, 2012
Number of installments		192
Final maturity		Jun. 15, 2030
Finance charges		Monthly
Contractual financial charges p.y.		2.34% above TJLP
Effective interest rate p.y.		2.34% above TJLP
Contract amount		R$ 40050
Loans and financing		R$ 27701	27,701
Local Currency [member] | BNDES [member] | 11211541 [member]
Disclosure of detailed information about borrowings [line items]
Contract		11211541
Company		GE S.B. do Norte
Allocation		Construction and implementation of wind generating plants.
Guarantees		Pledge of shares; assignment of receivables from energy sales from the project; assignment of machinery and equipment.
Issue date		Mar. 19, 2012
Number of installments		192
Final maturity		Jun. 15, 2030
Finance charges		Monthly
Contractual financial charges p.y.		2.34% above TJLP
Effective interest rate p.y.		2.34% above TJLP
Contract amount		R$ 90900
Loans and financing		R$ 62824	69,394
Local Currency [member] | BNDES [member] | 11211551 [member]
Disclosure of detailed information about borrowings [line items]
Contract		11211551
Company		GE Olho D'Água
Allocation		Construction and implementation of wind generating plants.
Guarantees		Pledge of shares; assignment of receivables from energy sales from the project; assignment of machinery and equipment.
Issue date		Mar. 19, 2012
Number of installments		192
Final maturity		Jun. 15, 2030
Finance charges		Monthly
Contractual financial charges p.y.		2.34% above TJLP
Effective interest rate p.y.		2.34% above TJLP
Contract amount		R$ 97000
Loans and financing		R$ 67096	74,112
Local Currency [member] | BNDES [member] | 18204611 [member]
Disclosure of detailed information about borrowings [line items]
Contract		18204611
Company		Cutia
Allocation		Construction and implementation of wind generating plants.
Guarantees		Pledge of shares; assignment of receivables.
Issue date		Oct. 25, 2018
Number of installments		192
Final maturity		Jul. 15, 2035
Finance charges		Monthly
Contractual financial charges p.y.		2.04% above TJLP
Effective interest rate p.y.		8.37%
Contract amount		R$ 619405
Loans and financing		R$ 588169	611,457
Local Currency [member] | BNDES [member] | 13212221 - A [member]
Disclosure of detailed information about borrowings [line items]
Contract		13212221 - A
Company		Costa Oeste
Allocation		Implementation of transmission line between Cascavel Oeste and Umuarama Sul substations and implementation of Umuarama Sul substation.
Guarantees		Assignment of receivables; 100% of pledged shares.
Issue date		Dec. 3, 2013
Number of installments		168
Final maturity		Nov. 30, 2028
Finance charges		Monthly
Contractual financial charges p.y.		1.95% + TJLP
Effective interest rate p.y.		1.95% + TJLP
Contract amount		R$ 27634
Loans and financing		R$ 17046	19,203
Local Currency [member] | BNDES [member] | 13212221 - B [member]
Disclosure of detailed information about borrowings [line items]
Contract		13212221 - B
Company		Costa Oeste
Allocation		Implementation of transmission line between Cascavel Oeste and Umuarama Sul substations and implementation of Umuarama Sul substation.
Guarantees		Assignment of receivables; 100% of pledged shares.
Issue date		Dec. 3, 2013
Number of installments		106
Final maturity		Sep. 30, 2023
Finance charges		Monthly
Contractual financial charges p.y.		3.5%
Effective interest rate p.y.		3.5%
Contract amount		R$ 9086
Loans and financing		R$ 2194	2,992
Local Currency [member] | BNDES [member] | 14205851 - A [member]
Disclosure of detailed information about borrowings [line items]
Contract		14205851 - A
Company		Marumbi
Allocation		Implementation of transmission line between Curitiba and Curitiba Leste and implementation of Curitiba Leste substation.
Guarantees		Assignment of receivables; 100% of pledged shares.
Issue date		Jul. 8, 2014
Number of installments		168
Final maturity		Jun. 30, 2029
Finance charges		Monthly
Contractual financial charges p.y.		2.00% + TJLP
Effective interest rate p.y.		2.00% + TJLP
Contract amount		R$ 33460
Loans and financing		R$ 22029	24,627
Local Currency [member] | BNDES [member] | 14205851 - B [member]
Disclosure of detailed information about borrowings [line items]
Contract		14205851 - B
Company		Marumbi
Allocation		Implementation of transmission line between Curitiba and Curitiba Leste and implementation of Curitiba Leste substation.
Guarantees		Assignment of receivables; 100% of pledged shares.
Issue date		Jul. 8, 2014
Number of installments		106
Final maturity		Apr. 30, 2024
Finance charges		Monthly
Contractual financial charges p.y.		6.00%
Effective interest rate p.y.		6.00%
Contract amount		R$ 21577
Loans and financing		7,550	9,813
Local Currency [member] | Banco do Brasil BNDES Transfer [member]
Disclosure of detailed information about borrowings [line items]
Loans and financing		R$ 83936	95,807
Local Currency [member] | Banco do Brasil BNDES Transfer [member] | 21/02000-0 [member]
Disclosure of detailed information about borrowings [line items]
Contract		21/02000-0
Company		Copel GeT
Allocation		Implementation of Mauá HPP.
Guarantees		Revenue from energy sales from the plant.
Issue date		Apr. 16, 2009
Number of installments		179
Final maturity		Jan. 15, 2028
Finance charges		Monthly
Contractual financial charges p.y.		2.13% above TJLP
Effective interest rate p.y.		2.13% above TJLP
Contract amount		R$ 169500
Loans and financing		R$ 83936	95,807
Local Currency [member] | BNDES [member]
Disclosure of detailed information about borrowings [line items]
Loans and financing			R$ 2254424
[1]	On March 25, 2021, the debt was renegotiated, with the final maturity date being changed to March 25, 2023 and the amount of financial charges to 135% of the DI p.y.

21 Loans and Financing (Detai_2

21 Loans and Financing (Details 1) - BRL (R$) R$ in Thousands	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disclosure of detailed information about borrowings [line items]
Loans and financing	R$ 3188531	R$ 3142383	R$ 4047307
Loans and financing, percent	100.00%	100.00%
Foreign Currency [member]
Disclosure of detailed information about borrowings [line items]
Loans and financing	R$ 140337	R$ 108983
Loans and financing, percent	4.40%	3.47%
Foreign Currency [member] | United States of America, Dollars
Disclosure of detailed information about borrowings [line items]
Loans and financing	R$ 140337	R$ 108983
Loans and financing, percent	4.40%	3.47%
Local Currency [member]
Disclosure of detailed information about borrowings [line items]
Loans and financing	R$ 3048194	R$ 3033400
Loans and financing, percent	95.60%	96.53%
Local Currency [member] | TJLP
Disclosure of detailed information about borrowings [line items]
Loans and financing	R$ 2090340	R$ 2271187
Loans and financing, percent	65.58%	72.30%
Local Currency [member] | CDI
Disclosure of detailed information about borrowings [line items]
Loans and financing	R$ 638431	R$ 676720
Loans and financing, percent	20.02%	21.54%
Local Currency [member] | TR
Disclosure of detailed information about borrowings [line items]
Loans and financing		R$ 2202
Loans and financing, percent		0.07%
Local Currency [member] | IPCA
Disclosure of detailed information about borrowings [line items]
Loans and financing	R$ 270749	R$ 8288
Loans and financing, percent	8.49%	0.26%
Local Currency [member] | Without indexer (annual fixed rate)
Disclosure of detailed information about borrowings [line items]
Loans and financing	R$ 48674	R$ 75003
Loans and financing, percent	1.51%	2.36%

21 Loans and Financing (Detai_3

21 Loans and Financing (Details 2) - BRL (R$) R$ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Disclosure of detailed information about borrowings [line items]
Gross debt	R$ 3214249	R$ 3168710
Transaction cost	(25,718)	(26,327)
Net debt	3,188,531	R$ 3142383
Noncurrent Installments [member]
Disclosure of detailed information about borrowings [line items]
Gross debt	2,493,421
Transaction cost	(22,567)
Net debt	2,470,854
Noncurrent Installments [member] | 2021 [member]
Disclosure of detailed information about borrowings [line items]
Gross debt	328,538
Transaction cost	(2,054)
Net debt	326,484
Noncurrent Installments [member] | 2022 [member]
Disclosure of detailed information about borrowings [line items]
Gross debt	202,249
Transaction cost	(1,732)
Net debt	200,517
Noncurrent Installments [member] | 2023 [member]
Disclosure of detailed information about borrowings [line items]
Gross debt	337,272
Transaction cost	(1,738)
Net debt	335,534
Noncurrent Installments [member] | 2024 [member]
Disclosure of detailed information about borrowings [line items]
Gross debt	195,764
Transaction cost	(1,735)
Net debt	194,029
Noncurrent Installments [member] | 2025 [member]
Disclosure of detailed information about borrowings [line items]
Gross debt	195,846
Transaction cost	(1,738)
Net debt	194,108
Noncurrent Installments [member] | After 2026 [member]
Disclosure of detailed information about borrowings [line items]
Gross debt	1,233,752
Transaction cost	(13,570)
Net debt	R$ 1220182

21 Loans and Financing (Detai_4

21 Loans and Financing (Details 3) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Disclosure of detailed information about borrowings [line items]
Loans and financing, beginning	R$ 3142383	R$ 4047307
Funding	263,000	796,296
Charges	183,265	274,549
Monetary and exchange variations	37,058	11,077
Amortization - principal	(253,700)	(1,660,869)
Payment - charges	(183,475)	(325,977)
Loans and financing, ending	3,188,531	3,142,383
Foreign Currency [member]
Disclosure of detailed information about borrowings [line items]
Loans and financing, beginning	108,983	104,751
Funding
Charges	6,928	5,599
Monetary and exchange variations	31,189	4,170
Amortization - principal
Payment - charges	(6,763)	(5,537)
Loans and financing, ending	140,337	108,983
Local Currency [member]
Disclosure of detailed information about borrowings [line items]
Loans and financing, beginning	3,033,400	3,942,556
Funding	263,000	796,296
Charges	176,337	268,950
Monetary and exchange variations	5,869	6,907
Amortization - principal	(253,700)	(1,660,869)
Payment - charges	(176,712)	(320,440)
Loans and financing, ending	R$ 3048194	R$ 3033400

21 Loans and Financing (Detai_5

21 Loans and Financing (Details 4)	12 Months Ended
	Dec. 31, 2020
Copel geracao e transmissao s.a. [member] | BNDES Finem n - 820989.1 - Maua [member]
Disclosure of detailed information about borrowings [line items]
Company	Copel GeT
Contract	BNDES Finem No. 820989.1 - Mauá
Annual financial index	EBITDA / Net financial results
Limit	≤ 1.3
Copel geracao e transmissao s.a. [member] | Banco do Brasil n - 21/02000-0 - Maua [member]
Disclosure of detailed information about borrowings [line items]
Company	Copel GeT
Contract	Banco do Brasil No. 21/02000-0 - Mauá
Annual financial index	EBITDA / Net financial results
Limit	≤ 1.3
Copel Distribuicao S.A. [member] | BNDES Finem n - 14205611 [member]
Disclosure of detailed information about borrowings [line items]
Company	Copel DIS
Contract	BNDES Finem No. 14205611
Annual financial index	Financial indebtedness / adjusted EBITIDA
Limit	≤ 4.0
Santa Maria Energias Renovaveis S.A. [member] | BNDES Finem n - 14212711 [member]
Disclosure of detailed information about borrowings [line items]
Company	Santa Maria
Contract	BNDES Finem No. 14212711
Annual financial index	Debt service coverage ratio
Limit	≤ 1.3
Santa Helena Energias Renovaveis S.A. [member] | BNDES Finem n - 14212721 [member]
Disclosure of detailed information about borrowings [line items]
Company	Santa Helena
Contract	BNDES Finem No. 14212721
Annual financial index	Debt service coverage ratio
Limit	≤ 1.3
Sao Bento Energia, Investimentos e Participacoes S.A. [member] | BNDES Assignment Agreement [member]
Disclosure of detailed information about borrowings [line items]
Company	São Bento Energia, Investimento e Participações
Contract	BNDES Assignment Agreement
Annual financial index	Debt service coverage ratio
Limit	≤ 1.3
GE Boa Vista S.A. [member] | BNDES Finem n - 11211531 [member]
Disclosure of detailed information about borrowings [line items]
Company	GE Boa Vista S.A.
Contract	BNDES Finem No. 11211531
Annual financial index	Debt service coverage ratio
Limit	≤ 1.3
GE Farol S.A. [member] | BNDES Finem n - 11211521 [member]
Disclosure of detailed information about borrowings [line items]
Company	GE Farol S.A.
Contract	BNDES Finem No. 11211521
Annual financial index	Debt service coverage ratio
Limit	≤ 1.3
GE Olho D'agua S.A. [member] | BNDES Finem n - 11211551 [member]
Disclosure of detailed information about borrowings [line items]
Company	GE Olho D´Água S.A.
Contract	BNDES Finem No. 11211551
Annual financial index	Debt service coverage ratio
Limit	≤ 1.3
GE Sao Bento do Norte S.A. [member] | BNDES Finem n - 11211541 [member]
Disclosure of detailed information about borrowings [line items]
Company	GE São Bento do Norte S.A.
Contract	BNDES Finem No. 11211541
Annual financial index	Debt service coverage ratio
Limit	≤ 1.3
Cutia Empreendimentos Eolicos S.A. [member] | BNDES Finem n - 18204611 [member]
Disclosure of detailed information about borrowings [line items]
Company	Cutia
Contract	BNDES Finem No. 18204611
Annual financial index	Debt service coverage ratio	[1]
Limit
Costa Oeste Transmissora de Energia S.A. [member] | BNDES Finem n - 14205851 - A [member]
Disclosure of detailed information about borrowings [line items]
Company	Costa Oeste
Contract	BNDES Finem No. 13212221
Annual financial index	Debt service coverage ratio
Limit	≤ 1.3
Marumbi Transmissora de Energia S.A. [member] | BNDES Finem n - 14205851 - B [member]
Disclosure of detailed information about borrowings [line items]
Company	Marumbi
Contract	BNDES Finem No. 14205851
Annual financial index	Debt service coverage ratio
Limit	≤ 1.3
[1]	financial ratio calculated based on the amounts of the consolidated financial statements of Cutia Empreendimentos Eolicos S.A.

21 Loans and Financing (Detai_6

21 Loans and Financing (Details Narrative) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Disclosure of detailed information about borrowings [line items]
Description of securites term	The term of these securities ranges from 4 to 51 months from the end of the reporting period.
National Treasury Department (STN - Secretaria do Tesouro Nacional) [member]
Disclosure of detailed information about borrowings [line items]
Description of securites term	2024.04.11
National Treasury Department (STN - Secretaria do Tesouro Nacional) [member] | Par Bonds [member] | Collateral [member]
Disclosure of detailed information about borrowings [line items]
Cash deposits	R$ 78764	R$ 57968
National Treasury Department (STN - Secretaria do Tesouro Nacional) [member] | Discount Bonds [member] | Collateral [member]
Disclosure of detailed information about borrowings [line items]
Cash deposits	R$ 54757	R$ 40465

22 Debentures (Details)

22 Debentures (Details) - BRL (R$) R$ in Thousands		12 Months Ended
		Dec. 31, 2020		Jan. 02, 2020	Dec. 31, 2019	Jan. 02, 2019	Dec. 31, 2018
Disclosure of detailed information about borrowings [line items]
Gross debt		R$ 6837819			R$ 8540366
Transaction cost		(80,338)			(110,656)
Debentures		6,757,481			8,429,710		R$ 7518131
Debentures, current		1,881,411			1,164,301
Debentures, noncurent		R$ 4876070			7,265,409
Debentures Due On 15 November, 2027 [Member]
Disclosure of detailed information about borrowings [line items]
Company	[1]	Copel
Issue	[1]	7th
Allocation	[1]	Working capital or used to make investments in the issuer.
Guarantees	[1]	Personal guarantee
Issue date	[1]	Jan. 19, 2018
Number of installments	[1]	2
Final maturity	[1]	Jan. 19, 2021
Payment of chages	[1]	Half-yearly
Contractual financial charges p.y.	[1]	119.0% of DI
Effective interest rate p.y.	[1]	125.18% of DI
Contract amount	[1]			R$ 600000
Debentures	[1]			R$ 303101		R$ 617378
Debentures Due On 14 Jun, 2022 [Member]
Disclosure of detailed information about borrowings [line items]
Company	[1]	Copel
Issue	[1]	8th
Allocation	[1]	Payment of the 6th issue of debentures and working capital increase
Guarantees	[1]	Personal guarantee
Issue date	[1]	Jun. 14, 2019
Number of installments	[1]	1
Final maturity	[1]	Jun. 14, 2022
Payment of chages	[1]	Half-yearly
Contractual financial charges p.y.	[1]	106.0% of DI
Effective interest rate p.y.	[1]	110.93% of DI
Contract amount	[1]	R$ 500000
Debentures		R$ 500475	[1]		500,906
Debentures Due On 15 May, 2020 [Member]
Disclosure of detailed information about borrowings [line items]
Company	[1]	Copel GeT
Issue	[1]	1st
Allocation	[1]	Working capital or used to make investments in the issuer.
Guarantees	[1]	Personal guarantee
Issue date	[1]	May 15, 2015
Number of installments	[1]	3
Final maturity	[1]	May 15, 2020
Payment of chages	[1]	Annual
Contractual financial charges p.y.	[1]	113.0% of DI
Effective interest rate p.y.	[1]	114.29% of DI
Contract amount	[1]	R$ 1000000
Debentures	[1]						R$ 346906
Debentures Due On 20 October, 2022 [Member]
Disclosure of detailed information about borrowings [line items]
Company		Copel GeT
Issue		3rd
Allocation		Working capital or used to make investments in the issuer.
Guarantees		Personal guarantee
Issue date		Oct. 20, 2017
Number of installments		3
Final maturity		Oct. 20, 2022
Payment of chages		Half-yearly
Contractual financial charges p.y.		126.0% ofDI
Effective interest rate p.y.		131.21% of DI
Contract amount		R$ 1000000
Debentures		R$ 669811			1,011,691
Debentures Due On 23 July, 2023 [Member]
Disclosure of detailed information about borrowings [line items]
Company		Copel GeT
Issue		4th
Allocation		Full early redemption of the 4th issue of the Company’s trade promissory notes and partial payment of the 1st amortization installment of the 2nd issue of debentures.
Guarantees		Personal guarantee
Issue date		Jul. 23, 2018
Number of installments		3
Final maturity		Jul. 23, 2023
Payment of chages		Half-yearly
Contractual financial charges p.y.		126.0% ofDI
Effective interest rate p.y.		133.77% of DI
Contract amount		R$ 1000000
Debentures		R$ 1010625			1,030,054
Debentures Due On 15 September, 2025 [Member]
Disclosure of detailed information about borrowings [line items]
Company	[2]	Copel GeT
Issue	[2]	5th
Allocation	[2]	Reimbursement of expenses related to the construction of the Transmission Lines Araraquara II - Taubaté, Assis - Londrina and Foz do Chopim.
Guarantees	[2]	Personal guarantee
Issue date	[2]	Sep. 25, 2018
Number of installments	[2]	5
Final maturity	[2]	Sep. 15, 2025
Payment of chages	[2]	Half-yearly
Contractual financial charges p.y.	[2]	IPCA + 7.6475%
Effective interest rate p.y.	[2]	IPCA+ 8.3295%
Contract amount	[2]	R$ 290000
Debentures	[2]	R$ 322110			308,464
Debentures Due On 15 July, 2024 [Member]
Disclosure of detailed information about borrowings [line items]
Company	[3]	Copel GeT
Issue	[3]	6th (1st serie)
Allocation	[3]	Full early redemption of the 5th issue of the Company’s trade promissory notes and partial payment of the 2nd amortization installment of the 2nd issue of debentures.
Guarantees	[3]	Personal guarantee
Issue date	[3]	Jul. 15, 2019
Number of installments	[3]	5
Final maturity	[3]	Jul. 15, 2024
Payment of chages	[3]	Half-yearly
Contractual financial charges p.y.	[3]	109.0% of DI
Effective interest rate p.y.	[3]	111.25% of DI
Contract amount	[3]	R$ 800000
Debentures	[3]	R$ 807793			818,406
Debentures Due On 15 July, 2025 [Member]
Disclosure of detailed information about borrowings [line items]
Company	[3]	Copel GeT
Issue	[3]	6th (2nd serie)
Allocation	[3]	Reimbursement of expenses related to the Colíder HPP and Baixo Iguaçu HPP projects
Guarantees	[3]	Personal guarantee
Issue date	[3]	Jul. 15, 2019
Number of installments	[3]	1
Final maturity	[3]	Jul. 15, 2025
Payment of chages	[3]	Half-yearly
Contractual financial charges p.y.	[3]	IPCA + 3.90%
Effective interest rate p.y.	[3]	IPCA+ 4.46%
Contract amount	[3]	R$ 200000
Debentures	[3]	R$ 215265			205,677
Debentures Due On 20 October, 2022 [Member]
Disclosure of detailed information about borrowings [line items]
Company	[1]	Copel DIS
Issue	[1]	3rd
Allocation	[1]	Working capital or used to make investments in the issuer.
Guarantees	[1]	Personal guarantee
Issue date	[1]	Oct. 20, 2017
Number of installments	[1]	2
Final maturity	[1]	Oct. 20, 2022
Payment of chages	[1]	Half-yearly
Contractual financial charges p.y.	[1]	126.0% of DI
Effective interest rate p.y.	[1]	130.85% of DI
Contract amount	[1]	R$ 500000
Debentures	[1]	R$ 502358			505,846
Debentures Due On 27 September, 2023 [Member]
Disclosure of detailed information about borrowings [line items]
Company	[1]	Copel DIS
Issue	[1]	4th
Allocation	[1]	Working capital and payment of the 1st installment of amortization of the 2nd issue of debentures.
Guarantees	[1]	Personal guarantee
Issue date	[1]	Sep. 27, 2018
Number of installments	[1]	3
Final maturity	[1]	Sep. 27, 2023
Payment of chages	[1]	Half-yearly
Contractual financial charges p.y.	[1]	DI + spread 2.70%
Effective interest rate p.y.	[1]	CDI + 3.96%
Contract amount	[1]	R$ 1000000
Debentures	[1]	R$ 1011796			1,019,626
Debentures Due On 15 November, 2027 [Member]
Disclosure of detailed information about borrowings [line items]
Company	[3]	Copel DIS
Issue	[3]	5th (1st serie)
Allocation	[3]	Investment for expansion, renovation or improvement and reimbursement of expenses of the Issuer's electricity distribution network linked to concession contract No. 46/1999 of ANEEL.
Guarantees	[3]	Personal guarantee
Issue date	[3]	Nov. 15, 2019
Number of installments	[3]	3
Final maturity	[3]	Nov. 15, 2027
Payment of chages	[3]	Half-yearly
Contractual financial charges p.y.	[3]	IPCA + 4.20%
Effective interest rate p.y.	[3]	IPCA+ 4.61%
Contract amount	[3]	R$ 500000
Debentures	[3]	R$ 529349			506,180
Debentures Due On 15 November, 2022 [Member]
Disclosure of detailed information about borrowings [line items]
Company	[3]	Copel DIS
Issue	[3]	5th (2nd serie)
Allocation	[3]	Reinforcement of working capital and recomposition of cash by the final amortization of the 2nd issue of debentures.
Guarantees	[3]	Personal guarantee
Issue date	[3]	Nov. 15, 2019
Number of installments	[3]	2
Final maturity	[3]	Nov. 15, 2022
Payment of chages	[3]	Half-yearly
Contractual financial charges p.y.	[3]	DI + spread 1.45%
Effective interest rate p.y.	[3]	CDI + 1.65%
Contract amount	[3]	R$ 350000
Debentures	[3]	R$ 351479			351,914
Debentures Due On 15 October, 2024 [Member]
Disclosure of detailed information about borrowings [line items]
Company	[1]	Copel CTE
Issue	[1]	1st
Allocation	[1]	Deployment, expansion and modernization of the telecommunication network.
Guarantees	[1]	Personal guarantee
Issue date	[1]	Oct. 15, 2015
Number of installments	[1]	5
Final maturity	[1]	Oct. 15, 2024
Payment of chages	[1]	Half-yearly
Contractual financial charges p.y.	[1]	IPCA +7.9633%
Effective interest rate p.y.	[1]	IPCA+ 8.1073%
Contract amount	[1]	R$ 160000
Debentures	[1]				195,429
Debentures Due On 15 July, 2022 [Member]
Disclosure of detailed information about borrowings [line items]
Company	[1]	Copel CTE
Issue	[1]	2nd
Allocation	[1]	Deployment, expansion and modernization of the telecommunication network.
Guarantees	[1]	Personal guarantee
Issue date	[1]	Jul. 15, 2017
Number of installments	[1]	1
Final maturity	[1]	Jul. 15, 2022
Payment of chages	[1]	Half-yearly
Contractual financial charges p.y.	[1]	IPCA + 5.4329%
Effective interest rate p.y.	[1]	IPCA+ 6.1036%
Contract amount	[1]	R$ 220000
Debentures	[1]				246,355
Debentures Due On 15 May, 2024 [Member]
Disclosure of detailed information about borrowings [line items]
Company	[1]	Copel CTE
Issue	[1]	3rd
Allocation	[1]	Investments in the issuer.
Guarantees	[1]	Personal guarantee
Issue date	[1]	May 15, 2019
Number of installments	[1]	3
Final maturity	[1]	May 15, 2024
Payment of chages	[1]	Half-yearly
Contractual financial charges p.y.	[1]	117.0% of DI
Effective interest rate p.y.	[1]	119.58% of DI
Contract amount	[1]	R$ 210000
Debentures	[1]				211,348
Debentures Due On 15 July, 2032 [Member]
Disclosure of detailed information about borrowings [line items]
Company	[2]	Brisa Potiguar
Issue	[2]	2nd (1st serie)
Allocation	[2]	Implementation of wind generating plants.
Guarantees	[2]	Real and personal guarantee and pledge of Copel GeT shares.
Issue date	[2]	Mar. 24, 2016
Number of installments	[2]	192
Final maturity	[2]	Jul. 15, 2032
Payment of chages	[2]	Monthly
Contractual financial charges p.y.	[2]	TJLP + 2.02%
Effective interest rate p.y.	[2]	TJLP + 2.02%
Contract amount	[2]	R$ 147575
Debentures	[2]	R$ 109677			119,171
Debentures Due On 15 July, 2032 [Member]
Disclosure of detailed information about borrowings [line items]
Company	[4]	Brisa Potiguar
Issue	[4]	2nd (2nd serie)
Allocation	[4]	Implementation of wind generating plants.
Guarantees	[4]	Real and personal guarantee and pledge of Copel GeT shares.
Issue date	[4]	Mar. 24, 2016
Number of installments	[4]	192
Final maturity	[4]	Jul. 15, 2032
Payment of chages	[4]	Monthly
Contractual financial charges p.y.	[4]	IPCA + 9.87%
Effective interest rate p.y.	[4]	IPCA+ 10.92%
Contract amount	[4]	R$ 153258
Debentures	[4]	R$ 130449			135,657
Debentures Due On 15 December, 2031 [Member]
Disclosure of detailed information about borrowings [line items]
Company	[4]	Cutia
Issue	[4]	1st
Allocation	[4]	Construction and implementation of wind generating plants.
Guarantees	[4]	Personal guarantee
Issue date	[4]	Mar. 20, 2019
Number of installments	[4]	26
Final maturity	[4]	Dec. 15, 2031
Payment of chages	[4]	Half-yearly
Contractual financial charges p.y.	[4]	IPCA +5.8813%
Effective interest rate p.y.	[4]	IPCA+ 6.83%
Contract amount	[4]	R$ 360000
Debentures	[4]	R$ 353166			352,829
Debentures Due On 15 December, 2021 [Member]
Disclosure of detailed information about borrowings [line items]
Company	[2]	Compagás
Issue	[2]	1st
Allocation	[2]	Fund investment plan of the issuer.
Guarantees	[2]	Floating
Issue date	[2]	Apr. 15, 2016
Number of installments	[2]	54
Final maturity	[2]	Dec. 15, 2021
Payment of chages	[2]	Quarterly
Contractual financial charges p.y.	[2]	TJLP + 2.17%
Effective interest rate p.y.	[2]	TJLP + 2.17%
Contract amount	[2]	R$ 33620
Debentures	[2]	R$ 3000			6,001
Debentures Due [Member]
Disclosure of detailed information about borrowings [line items]
Company	[5]	Compagás
Issue	[5]	2nd
Allocation	[5]	Fund investment plan of the issuer.
Guarantees	[5]	Floating
Number of installments	[5]	0
Payment of chages	[5]	Quarterly
Contractual financial charges p.y.	[5]	SELIC + 2.17%
Effective interest rate p.y.	[5]	SELIC + 2.17%
Contract amount	[5]
Debentures	[5]	R$ 2890			5,782
Debentures Due On 08 June, 2021 [Member]
Disclosure of detailed information about borrowings [line items]
Company	[6]	Compagás
Issue	[6]	3rd
Allocation	[6]	Issuer's investment plan fund.
Guarantees	[6]	Real
Issue date	[6]	Dec. 17, 2019
Number of installments	[6]	18
Final maturity	[6]	Jun. 28, 2021
Payment of chages	[6]	Quarterly
Contractual financial charges p.y.	[6]	DI + spread 0.88
Effective interest rate p.y.	[6]	5.68%
Contract amount	[6]	R$ 43000
Debentures	[6]	R$ 14475			R$ 44746
[1]	Simple debentures, single series, not convertible into shares, unsecured, for public distribution with restricted placement efforts, according to CVM No. 476. Guarantor: Copel. Trustee: Pentagono S.A. DTVM.
[2]	Simple debentures, single series, not convertible into shares, with security interest and additional personal guarantee, for public distribution with restricted efforts, pursuant to CVM Instruction No. 476.
[3]	Simple debentures, two series, not convertible into shares, unsecured, for public distribution with restricted placement efforts, according to CVM No. 476. Guarantor: Copel. Trustee: Pentagono S.A. DTVM.
[4]	Simple debentures, two series, not convertible into shares, issued privately. Companies: Nova Asa Branca I, Nova Asa Branca II, Nova Asa Branca III, Nova Eurus e Ventos de Santo Uriel. Guarantor: Copel. They have no trustee.
[5]	Simple registered debentures, single series, with private issue and exclusive placement by BNDESPAR. Guarantor: Compagas. Trustee: BNDES Participacoes S.A. BNDESPAR.
[6]	Simple and registered debentures, with a single series, in private issue, with public distribution of restricted efforts. Guarantor: Compagas. Trustee: Simplific Pavarini DTVM Ltda.

22 Debentures (Details 1)

22 Debentures (Details 1) R$ in Thousands	Dec. 31, 2020BRL (R$)
Disclosure of detailed information about borrowings [line items]
Gross debt	R$ 4935558
Transaction cost	(59,488)
Net debt	4,876,070
2021 [member]
Disclosure of detailed information about borrowings [line items]
Gross debt	2,035,503
Transaction cost	(18,969)
Net debt	2,016,534
2022 [member]
Disclosure of detailed information about borrowings [line items]
Gross debt	1,173,340
Transaction cost	(12,064)
Net debt	1,161,276
2023 [member]
Disclosure of detailed information about borrowings [line items]
Gross debt	504,759
Transaction cost	(6,982)
Net debt	497,777
2024 [member]
Disclosure of detailed information about borrowings [line items]
Gross debt	499,422
Transaction cost	(5,298)
Net debt	494,124
2025 [member]
Disclosure of detailed information about borrowings [line items]
Gross debt	234,477
Transaction cost	(3,756)
Net debt	230,721
After 2026 [Member]
Disclosure of detailed information about borrowings [line items]
Gross debt	488,057
Transaction cost	(12,419)
Net debt	R$ 475638

22 Debentures (Details 2)

22 Debentures (Details 2) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Disclosure Of Debentures Abstract
Debentures, beginning balance	R$ 8429710	R$ 7518131
Funding	453,951	2,965,028
Charges and monetary variations	(1,046,295)	623,795
Amortization - principal	(422,295)	(1,977,125)
Payment - charges	(657,590)	(700,119)
Debentures, ending balance	R$ 6757481	R$ 8429710

22 Debentures (Details 3)

22 Debentures (Details 3)	12 Months Ended
	Dec. 31, 2020
3rd Issue De Debentures [Member] | Copel Geracao e Transmissao S.A. [Member]
Disclosure of detailed information about borrowings [line items]
Company name	Copel GeT
Contract	3rd issue of Debentures
Annual financial index	Consolidated net debt / Consolidated EBITDA
Limit	≤ 3.5
4th Issue De Debentures [Member] | Copel Geracao e Transmissao S.A. [Member]
Disclosure of detailed information about borrowings [line items]
Company name	Copel GeT
Contract	4th issue of Debentures
Annual financial index	Consolidated net debt / Consolidated EBITDA
Limit	≤ 3.5
4th Issue De Debentures [Member] | Copel Telecomunicacoes S.A. [Member]
Disclosure of detailed information about borrowings [line items]
Company name	Copel TEL
Contract	1st issue of Debentures
Annual financial index	Consolidated net debt / Consolidated EBITDA
Limit	≤ 3.5
4th Issue De Debentures [Member] | Compagas [Member]
Disclosure of detailed information about borrowings [line items]
Company name	Compagás
Contract	3rd issue of Debentures
Annual financial index	Net debt / EBTIDA
Limit	≤ 3.5
5th Issue De Debentures [Member] | Copel Geracao e Transmissao S.A. [Member]
Disclosure of detailed information about borrowings [line items]
Company name	Copel GeT
Contract	5th issue of Debentures
Annual financial index	Consolidated net debt / Consolidated EBITDA
Limit	≤ 3.5
5th Issue De Debentures [Member] | Copel Distribuicao S.A. [member]
Disclosure of detailed information about borrowings [line items]
Company name	Copel DIS
Contract	3rd issue of Debentures
Annual financial index	Consolidated net debt / Consolidated EBITDA
Limit	≤ 3.5
5th Issue De Debentures [Member] | Copel Telecomunicacoes S.A. [Member]
Disclosure of detailed information about borrowings [line items]
Company name	Copel TEL
Contract	3rd issue of Debentures
Annual financial index	Consolidated net debt / Consolidated EBITDA
Limit	≤ 3.5
5th Issue De Debentures [Member] | Ventos de Santo Uriel [Member]
Disclosure of detailed information about borrowings [line items]
Company name	Cutia
Contract	1st issue of Debentures
Annual financial index	Debt service coverage ratio	[1]
Limit	≥ 1.2
6th Issue De Debentures [Member] | Copel Geracao e Transmissao S.A. [Member]
Disclosure of detailed information about borrowings [line items]
Company name	Copel GeT
Contract	6th issue of Debentures
Annual financial index	Consolidated net debt / Consolidated EBITDA
Limit	≤ 3.5
6th Issue De Debentures [Member] | Copel Distribuicao S.A. [member]
Disclosure of detailed information about borrowings [line items]
Company name	Copel DIS
Contract	4th issue of Debentures
Annual financial index	Consolidated net debt / Consolidated EBITDA
Limit	≤ 3.5
5th Issue De Debentures [Member] | Copel Geracao e Transmissao S.A. [Member]
Disclosure of detailed information about borrowings [line items]
Company name	Copel GeT
Contract	6th issue of Debentures
Annual financial index	Debt service coverage ratio
Limit	≥ 1.5
5th Issue De Debentures [Member] | Copel Distribuicao S.A. [member]
Disclosure of detailed information about borrowings [line items]
Company name	Copel DIS
Contract	5th issue of Debentures
Annual financial index	Consolidated net debt / Consolidated EBITDA
Limit	≤ 3.5
2nd Issue De Debentures [Member] | Copel Telecomunicacoes S.A. [Member]
Disclosure of detailed information about borrowings [line items]
Company name	Copel TEL
Contract	2nd issue of Debentures
Annual financial index	Consolidated net debt / Consolidated EBITDA
Limit	≤ 3.5
2nd Issue De Debentures [Member] | Compagas [Member]
Disclosure of detailed information about borrowings [line items]
Company name	Compagás
Contract	2nd issue of Debentures
Annual financial index	Net debt / EBTIDA General Indebtedness
Limit	≤ 3.5 ≤ 0.7
2nd Issue De Debentures [Member] | Nova Asa Branca I [Member]
Disclosure of detailed information about borrowings [line items]
Company name	Nova Asa Branca I
Contract	2nd issue of Debentures
Annual financial index	Debt service coverage ratio
Limit	≥ 1.3
2nd Issue De Debentures [Member] | Nova Asa Branca II [Member]
Disclosure of detailed information about borrowings [line items]
Company name	Nova Asa Branca II
Contract	2nd issue of Debentures
Annual financial index	Debt service coverage ratio
Limit	≥ 1.3
2nd Issue De Debentures [Member] | Nova Asa Branca III [Member]
Disclosure of detailed information about borrowings [line items]
Company name	Nova Asa Branca III
Contract	2nd issue of Debentures
Annual financial index	Debt service coverage ratio
Limit	≥ 1.3
2nd Issue De Debentures [Member] | Nova Eurus IV [Member]
Disclosure of detailed information about borrowings [line items]
Company name	Nova Eurus IV
Contract	2nd issue of Debentures
Annual financial index	Debt service coverage ratio
Limit	≥ 1.3
2nd Issue De Debentures [Member] | Ventos de Santo Uriel [Member]
Disclosure of detailed information about borrowings [line items]
Company name	Ventos de Santo Uriel
Contract	2nd issue of Debentures
Annual financial index	Debt service coverage ratio
Limit	≥ 1.3
3rd Issue De Debentures [Member] | Copel Geracao e Transmissao S.A. [Member]
Disclosure of detailed information about borrowings [line items]
Company name	Copel GeT
Contract	3rd issue of Debentures
Annual financial index	Debt service coverage ratio
Limit	≥ 1.5
4th Issue De Debentures [Member] | Copel Geracao e Transmissao S.A. [Member]
Disclosure of detailed information about borrowings [line items]
Company name	Copel GeT
Contract	4th issue of Debentures
Annual financial index	Debt service coverage ratio
Limit	≥ 1.5
5th Issue De Debentures [Member] | Copel Geracao e Transmissao S.A. [Member]
Disclosure of detailed information about borrowings [line items]
Company name	Copel GeT
Contract	5th issue of Debentures
Annual financial index	Debt service coverage ratio
Limit	≥ 1.5
3rd Issue De Debentures [Member] | Copel Distribuicao S.A. [member]
Disclosure of detailed information about borrowings [line items]
Company name	Copel DIS
Contract	3rd issue of Debentures
Annual financial index	Debt service coverage ratio
Limit	≥ 1.5
4th Issue De Debentures [Member] | Copel Distribuicao S.A. [member]
Disclosure of detailed information about borrowings [line items]
Company name	Copel DIS
Contract	4th issue of Debentures
Annual financial index	Debt service coverage ratio
Limit	≥ 1.5
5th Issue De Debentures [Member] | Copel Distribuicao S.A. [member]
Disclosure of detailed information about borrowings [line items]
Company name	Copel DIS
Contract	5th issue of Debentures
Annual financial index	Debt service coverage ratio
Limit	≥ 1.5
Debentures [Member] | Copel Telecomunicacoes S.A. [Member]
Disclosure of detailed information about borrowings [line items]
Company name	Copel TEL
Contract	1st issue of Debentures
Annual financial index	Debt service coverage ratio
Limit	≥ 1.5
2nd Issue De Debentures [Member] | Copel Telecomunicacoes S.A. [Member]
Disclosure of detailed information about borrowings [line items]
Company name	Copel TEL
Contract	2nd issue of Debentures
Annual financial index	Debt service coverage ratio
Limit	≥ 1.5
3rd Issue De Debentures [Member] | Copel Telecomunicacoes S.A. [Member]
Disclosure of detailed information about borrowings [line items]
Company name	Copel TEL
Contract	3rd issue of Debentures
Annual financial index	Debt service coverage ratio
Limit	≥ 1.5
Copel [Member] | 7th Issue De Debentures [Member]
Disclosure of detailed information about borrowings [line items]
Company name	Copel
Contract	7th issue of Debentures
Annual financial index	Consolidated net debt / Consolidated EBITDA
Limit	≤ 3.5
Copel [Member] | 8th Issue De Debentures [Member]
Disclosure of detailed information about borrowings [line items]
Company name	Copel
Contract	8th issue of Debentures
Annual financial index	Consolidated net debt / Consolidated EBITDA
Limit	≥ 1.5
Copel [Member] | 5th Issue De Debentures [Member]
Disclosure of detailed information about borrowings [line items]
Company name	Copel
Contract	5th issue of Debentures
Annual financial index	Consolidated net debt / Consolidated EBITDA
Limit	≤ 3.5
Copel [Member] | 6th Issue De Debentures [Member]
Disclosure of detailed information about borrowings [line items]
Company name	Copel
Contract	6th issue of Debentures
Annual financial index	Consolidated net debt / Consolidated EBITDA
Limit	≤ 3.5
Copel [Member] | 7th Issue De Debentures [Member]
Disclosure of detailed information about borrowings [line items]
Company name	Copel
Contract	7th issue of Debentures
Annual financial index	Debt service coverage ratio
Limit	≥ 1.5
Copel [Member] | 8th Issue De Debentures [Member]
Disclosure of detailed information about borrowings [line items]
Company name	Copel
Contract	8th issue of Debentures
Annual financial index	Debt service coverage ratio
Limit	≥ 1.5
Copel [Member] | 5th Issue De Debentures [Member]
Disclosure of detailed information about borrowings [line items]
Company name	Copel
Contract	5th issue of Debentures
Annual financial index	Debt service coverage ratio
Limit	≥ 1.5
Copel [Member] | 6th Issue De Debentures [Member]
Disclosure of detailed information about borrowings [line items]
Company name	Copel
Contract	6th issue of Debentures
Annual financial index	Debt service coverage ratio
Limit	≥ 1.5
[1]	financial ratio calculated based on the amounts of the consolidated financial statements of Cutia Empreendimentos Eolicos S.A.

23 Post-employment Benefits (De

23 Post-employment Benefits (Details) - BRL (R$) R$ in Thousands	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disclosure of defined benefit plans [line items]
Post-employment benefits	R$ 1493614	R$ 1194936	R$ 968763
Post-employment benefits, current	69,231	66,004
Post-employment benefits, noncurrent	1,424,383	1,128,932
Pension Plans [member]
Disclosure of defined benefit plans [line items]
Post-employment benefits	1,124	1,537
Healthcare Plans [member]
Disclosure of defined benefit plans [line items]
Post-employment benefits	R$ 1492490	R$ 1193399

23 Post-employment Benefits (_2

23 Post-employment Benefits (Details 1) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disclosure of defined benefit plans [line items]
Post-employment benefits
Management [member]
Disclosure of defined benefit plans [line items]
Post-employment benefits	1,116	R$ 1541	R$ 1725
Pension Plans [member] | Management [member]
Disclosure of defined benefit plans [line items]
Post-employment benefits	977	1,450	1,598
Healthcare Plan [member] | Management [member]
Disclosure of defined benefit plans [line items]
Post-employment benefits	139	91	127
Employees [member]
Disclosure of defined benefit plans [line items]
Post-employment benefits	227,518	236,785	242,025
Employees [member] | Pension Plans [member]
Disclosure of defined benefit plans [line items]
Post-employment benefits	57,977	60,754	67,457
Employees [member] | Healthcare Plan - Post Employment [member]
Disclosure of defined benefit plans [line items]
Post-employment benefits	94,349	99,577	97,866
Employees [member] | Healthcare Plan - Active Employees [member]
Disclosure of defined benefit plans [line items]
Post-employment benefits	R$ 75192	R$ 76454	R$ 76702

23 Post-employment Benefits (_3

23 Post-employment Benefits (Details 2) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Post-Employment Benefits [Roll Forward]
Post-employment benefits, balance at beginning	R$ 1194936	R$ 968763
Appropriation of actuarial calculation	94,349	99,578
Appropriation of pension and healthcare contributions	130,129	138,974
Adjustment related to actuarial gains (loss)	271,343	186,628
Amortizations	(197,143)	(199,007)
Post-employment benefits, balance at ending	R$ 1493614	R$ 1194936

23 Post-employment Benefits (_4

23 Post-employment Benefits (Details 3)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Inflation P.Y. [member]
Disclosure of defined benefit plans [line items]
Nominal rate	4.00%	2.90%
Expected Rate Of Discount/Return P.Y. [member] | Unified Plan Defined Benefit [member]
Disclosure of defined benefit plans [line items]
Real rate	2.85%	3.05%
Nominal rate	6.96%	6.04%
Expected Rate Of Discount/Return P.Y. [member] | Unified Plan - Balance [member]
Disclosure of defined benefit plans [line items]
Real rate	3.20%	3.20%
Nominal rate	7.33%	6.19%
Expected Rate Of Discount/Return P.Y. [member] | Plan III [member]
Disclosure of defined benefit plans [line items]
Real rate	3.40%	3.20%
Nominal rate	7.54%	6.19%
Expected Rate Of Discount/Return P.Y. [member] | Assistance Plan [member]
Disclosure of defined benefit plans [line items]
Real rate	3.20%	3.30%
Nominal rate	7.33%	6.30%
Salary Growth [member] | Plan III [member]
Disclosure of defined benefit plans [line items]
Real rate	1.00%	1.00%
Nominal rate	5.04%	3.93%
Salary Growth [member] | Unified Plan [member]
Disclosure of defined benefit plans [line items]
Real rate	0.00%	1.00%
Nominal rate	4.00%	3.93%
Demographic [member] | Mortality Table [member]
Disclosure of defined benefit plans [line items]
Nominal assumption	AT - 2000	AT - 2000
Demographic [member] | Mortality Table Of Individuals With Permanent Disability [member]
Disclosure of defined benefit plans [line items]
Nominal assumption	WINKLEVOSS	WINKLEVOSS
Demographic [member] | Table Of New Disability Benefit Vested [member]
Disclosure of defined benefit plans [line items]
Nominal assumption	TASA 1927	TASA 1927

23 Post-employment Benefits (_5

23 Post-employment Benefits (Details 4) - Participants	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Unified Plan [member]
Disclosure of defined benefit plans [line items]
Number of active participants	22	27
Number of inactive participants	4,274	4,337
Total	4,296	4,364
Plan III [member]
Disclosure of defined benefit plans [line items]
Number of active participants	7,401	7,647
Number of inactive participants	4,633	4,324
Total	12,034	11,971
Assistance Plan [member]
Disclosure of defined benefit plans [line items]
Number of active participants	6,546	6,963
Number of inactive participants	9,032	8,433
Number of dependent people	21,716	22,183
Total	37,294	37,579

23 Post-employment Benefits (_6

23 Post-employment Benefits (Details 5)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Unified Plan [member]
Disclosure of defined benefit plans [line items]
Retired participants life expectancy	12 years 4 months 17 days	13 years 1 month 17 days
Pensioner participants life expectancy	14 years 25 days	8 years 4 months 24 days
Plan III [member]
Disclosure of defined benefit plans [line items]
Retired participants life expectancy	23 years 1 month 28 days	25 years 10 months 2 days
Pensioner participants life expectancy	24 years 11 months 23 days	25 years 10 months 2 days

23 Post-employment Benefits (_7

23 Post-employment Benefits (Details 6) - BRL (R$) R$ in Thousands	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Disclosure of defined benefit plans [line items]
Total liabilities or partially covered	R$ 11820185	R$ 11074608
Fair value of the plan assets	(11,420,196)	(10,880,721)
Plan coverage status	399,989	193,887
Unrecognized asset	1,092,501	999,512
Total	1,492,490	1,193,399
Unified Plan [member]
Disclosure of defined benefit plans [line items]
Total liabilities or partially covered	6,760,824	6,638,462	R$ 5914764	R$ 5352894
Fair value of the plan assets	(7,568,268)	(7,546,756)	(6,290,841)
Plan coverage status	(807,444)
Unrecognized asset	807,444
Total
Plan III [member]
Disclosure of defined benefit plans [line items]
Total liabilities or partially covered	3,344,723	3,046,536	2,145,661	1,734,568
Fair value of the plan assets	(3,629,780)	(3,137,754)	(2,178,236)
Plan coverage status	(285,057)
Unrecognized asset	285,057
Total
Assistance Plan [member]
Disclosure of defined benefit plans [line items]
Total liabilities or partially covered	1,714,638	1,389,610	1,140,605	R$ 1035957
Fair value of the plan assets	(222,148)	R$ 196211	R$ 172991
Plan coverage status	1,492,490
Unrecognized asset
Total	R$ 1492490

23 Post-employment Benefits (_8

23 Post-employment Benefits (Details 7) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Actuarial Obligations [Roll Forward]
Present value of net actuarial obligations, beginning balance	R$ 11074608
Present value of net actuarial obligations, ending balance	11,820,185	R$ 11074608
Unified Plan [member]
Actuarial Obligations [Roll Forward]
Present value of net actuarial obligations, beginning balance	6,638,462	5,914,764	R$ 5352894
Cost of services	578	560	589
Cost of interest	405,371	477,732	533,201
Benefits paid	(456,151)	(435,454)	(414,256)
Actuarial (gain) losses	172,564	680,860	442,336
Present value of net actuarial obligations, ending balance	6,760,824	6,638,462	5,914,764
Plan III [member]
Actuarial Obligations [Roll Forward]
Present value of net actuarial obligations, beginning balance	3,046,536	2,145,661	1,734,568
Cost of services	2,018	4,098	9,604
Cost of interest	183,866	128,075	195,991
Benefits paid	(203,342)	(174,427)	(133,281)
Actuarial (gain) losses	315,645	943,129	338,779
Present value of net actuarial obligations, ending balance	3,344,723	3,046,536	2,145,661
Assistance Plan [member]
Actuarial Obligations [Roll Forward]
Present value of net actuarial obligations, beginning balance	1,389,610	1,140,605	1,035,957
Cost of services	20,854	14,306	11,633
Cost of interest	85,561	106,004	102,916
Benefits paid	(74)	(30)	(7)
Actuarial (gain) losses	218,687	128,725	(9,894)
Present value of net actuarial obligations, ending balance	R$ 1714638	R$ 1389610	R$ 1140605

23 Post-employment Benefits (_9

23 Post-employment Benefits (Details 8) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disclosure of defined benefit plans [line items]
Fair value of the plan's assets, ending balance	R$ 11420196	R$ 10880721
Unified Plan [member]
Disclosure of defined benefit plans [line items]
Fair value of the plan's assets, beginning balance	7,546,756	6,290,841	R$ 5834572
Return estimated for assets	607,252	685,685	593,572
Contributions and distributions	23,919	23,851	24,011
Benefits paid	(456,151)	(435,454)	(414,256)
Actuarial gain (losses)	(153,508)	981,833	252,942
Fair value of the plan's assets, ending balance	7,568,268	7,546,756	6,290,841
Plan III [member]
Disclosure of defined benefit plans [line items]
Fair value of the plan's assets, beginning balance	3,137,754	2,178,236	1,821,055
Return estimated for assets	224,591	337,476	230,703
Contributions and distributions	136,708	4,185	9,184
Benefits paid	(203,341)	(174,427)	(133,281)
Actuarial gain (losses)	334,068	792,284	250,575
Fair value of the plan's assets, ending balance	3,629,780	3,137,754	2,178,236
Assistance Plan [member]
Disclosure of defined benefit plans [line items]
Fair value of the plan's assets, beginning balance	196,211	172,991	170,923
Return estimated for assets	16,474	51,541	16,579
Contributions and distributions
Benefits paid
Actuarial gain (losses)	9,463	(28,321)	(14,511)
Fair value of the plan's assets, ending balance	R$ 222148	R$ 196211	R$ 172991

23 Post-employment Benefits _10

23 Post-employment Benefits (Details 9) R$ in Thousands	12 Months Ended
	Dec. 31, 2020BRL (R$)
Plan III [member]
Disclosure of defined benefit plans [line items]
Cost of current service	R$ 4010
Estimated cost of interest	246,255
Expected return on plan assets	(245,291)
Expected employee contributions	2,003
Costs (income or loss)	2,971
Assistance Plan [member]
Disclosure of defined benefit plans [line items]
Cost of current service	7,368
Estimated cost of interest	125,133
Expected return on plan assets	(15,994)
Expected employee contributions
Costs (income or loss)	116,507
Unified Plan [member]
Disclosure of defined benefit plans [line items]
Cost of current service	388
Estimated cost of interest	481,656
Expected return on plan assets	(530,144)
Expected employee contributions	(136)
Costs (income or loss)	R$ 48236

23 Post-employment Benefits _11

23 Post-employment Benefits (Details 10) R$ in Thousands	Dec. 31, 2020BRL (R$)
Increase By 1% [member]
Sensitivity of long-term interest rate
Impacts on the obligations of the pension	R$ 514571
Impacts on the obligations of healthcare program	(130,084)
Sensitivity of growth rate of the medical costs
Impacts on the obligations of healthcare program	116,165
Impact on cost of service for the following financial year of healthcare program	492
Sensitivity of the service cost
Impacts on the obligations of the pension	29
Impacts on the obligations of healthcare program	572
Decrease In 1% [member]
Sensitivity of long-term interest rate
Impacts on the obligations of the pension	521,397
Impacts on the obligations of healthcare program	138,601
Sensitivity of growth rate of the medical costs
Impacts on the obligations of healthcare program	(112,757)
Impact on cost of service for the following financial year of healthcare program	(478)
Sensitivity of the service cost
Impacts on the obligations of the pension	(30)
Impacts on the obligations of healthcare program	R$ 586

23 Post-employment Benefits _12

23 Post-employment Benefits (Details 11) R$ in Thousands	12 Months Ended
	Dec. 31, 2020BRL (R$)
2021 [member]
DisclosureOfBenefitsPayableLineItems [Line Items]
Benefits payable	R$ 858912
2021 [member]
DisclosureOfBenefitsPayableLineItems [Line Items]
Benefits payable	838,980
2022 [member]
DisclosureOfBenefitsPayableLineItems [Line Items]
Benefits payable	815,238
2023 [member]
DisclosureOfBenefitsPayableLineItems [Line Items]
Benefits payable	790,598
2024 [member]
DisclosureOfBenefitsPayableLineItems [Line Items]
Benefits payable	766,390
2026 a 2050 [member]
DisclosureOfBenefitsPayableLineItems [Line Items]
Benefits payable	8,248,754
Unified Plan [member] | 2021 [member]
DisclosureOfBenefitsPayableLineItems [Line Items]
Benefits payable	589,819
Unified Plan [member] | 2021 [member]
DisclosureOfBenefitsPayableLineItems [Line Items]
Benefits payable	572,875
Unified Plan [member] | 2022 [member]
DisclosureOfBenefitsPayableLineItems [Line Items]
Benefits payable	555,705
Unified Plan [member] | 2023 [member]
DisclosureOfBenefitsPayableLineItems [Line Items]
Benefits payable	538,812
Unified Plan [member] | 2024 [member]
DisclosureOfBenefitsPayableLineItems [Line Items]
Benefits payable	522,208
Unified Plan [member] | 2026 a 2050 [member]
DisclosureOfBenefitsPayableLineItems [Line Items]
Benefits payable	5,119,047
Plan III [member] | 2021 [member]
DisclosureOfBenefitsPayableLineItems [Line Items]
Benefits payable	179,251
Plan III [member] | 2021 [member]
DisclosureOfBenefitsPayableLineItems [Line Items]
Benefits payable	173,696
Plan III [member] | 2022 [member]
DisclosureOfBenefitsPayableLineItems [Line Items]
Benefits payable	167,961
Plan III [member] | 2023 [member]
DisclosureOfBenefitsPayableLineItems [Line Items]
Benefits payable	162,277
Plan III [member] | 2024 [member]
DisclosureOfBenefitsPayableLineItems [Line Items]
Benefits payable	156,810
Plan III [member] | 2026 a 2050 [member]
DisclosureOfBenefitsPayableLineItems [Line Items]
Benefits payable	2,119,296
Assistance Plan [member] | 2021 [member]
DisclosureOfBenefitsPayableLineItems [Line Items]
Benefits payable	89,842
Assistance Plan [member] | 2021 [member]
DisclosureOfBenefitsPayableLineItems [Line Items]
Benefits payable	92,409
Assistance Plan [member] | 2022 [member]
DisclosureOfBenefitsPayableLineItems [Line Items]
Benefits payable	91,572
Assistance Plan [member] | 2023 [member]
DisclosureOfBenefitsPayableLineItems [Line Items]
Benefits payable	89,509
Assistance Plan [member] | 2024 [member]
DisclosureOfBenefitsPayableLineItems [Line Items]
Benefits payable	87,372
Assistance Plan [member] | 2026 a 2050 [member]
DisclosureOfBenefitsPayableLineItems [Line Items]
Benefits payable	R$ 1010411

23 Post-employment Benefits _13

23 Post-employment Benefits (Details 12)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Disclosure of defined benefit plans [line items]
Asset allocation	100.00%	100.00%
Fixed Income [member]
Disclosure of defined benefit plans [line items]
Asset allocation	69.60%	70.40%
Variable Income [member]
Disclosure of defined benefit plans [line items]
Asset allocation	7.20%	9.10%
Loans [member]
Disclosure of defined benefit plans [line items]
Asset allocation	1.60%	1.60%
Real Estate [member]
Disclosure of defined benefit plans [line items]
Asset allocation	5.80%	7.20%
Investment Structuring [member]
Disclosure of defined benefit plans [line items]
Asset allocation	10.50%	8.90%
Investments Abroad [member]
Disclosure of defined benefit plans [line items]
Asset allocation	5.30%	2.80%

23 Post-employment Benefits _14

23 Post-employment Benefits (Details 13)	12 Months Ended
	Dec. 31, 2020
Unified Plan [member] | Fixed Income [member]
Disclosure of defined benefit plans [line items]
Target limit	86.50%
Minimum limit	55.00%
Unified Plan [member] | Variable Income [member]
Disclosure of defined benefit plans [line items]
Target limit	5.00%
Minimum limit	1.00%
Unified Plan [member] | Loans [member]
Disclosure of defined benefit plans [line items]
Target limit	0.50%
Minimum limit	0.00%
Unified Plan [member] | Real Estate [member]
Disclosure of defined benefit plans [line items]
Target limit	5.00%
Minimum limit	1.00%
Unified Plan [member] | Investment Structuring [member]
Disclosure of defined benefit plans [line items]
Target limit	3.00%
Minimum limit	0.00%
Unified Plan [member] | Investments Abroad [member]
Disclosure of defined benefit plans [line items]
Target limit	0.00%
Minimum limit	0.00%
Plan III [member] | Fixed Income [member]
Disclosure of defined benefit plans [line items]
Target limit	51.00%
Minimum limit	23.00%
Plan III [member] | Variable Income [member]
Disclosure of defined benefit plans [line items]
Target limit	14.00%
Minimum limit	8.00%
Plan III [member] | Loans [member]
Disclosure of defined benefit plans [line items]
Target limit	3.00%
Minimum limit	1.00%
Plan III [member] | Real Estate [member]
Disclosure of defined benefit plans [line items]
Target limit	10.00%
Minimum limit	0.00%
Plan III [member] | Investment Structuring [member]
Disclosure of defined benefit plans [line items]
Target limit	16.00%
Minimum limit	0.00%
Plan III [member] | Investments Abroad [member]
Disclosure of defined benefit plans [line items]
Target limit	6.00%
Minimum limit	0.00%

23 Post-employment Benefits _15

23 Post-employment Benefits (Details Narrative) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Variable Income [member]
Disclosure of defined benefit plans [line items]
Legal limit	70.00%
Healthcare Plan [member]
Disclosure of defined benefit plans [line items]
Average age of inactive participants	68 years 1 month 6 days
Pension Plans [member]
Disclosure of defined benefit plans [line items]
Average age of inactive participants	67 years 2 months 12 days
Plan III [member]
Disclosure of defined benefit plans [line items]
Surplus	R$ 91218
Contributions of all active employees	67,515	R$ 70564
Unified Plan [member]
Disclosure of defined benefit plans [line items]
Surplus	R$ 908294

24 Sectorial Charges Payable (D

24 Sectorial Charges Payable (Details) - BRL (R$) R$ in Thousands	Dec. 31, 2020	Dec. 31, 2019
DisclosureOfCustomerChargesDueLineItems [Line Items]
Sectorial charges due	R$ 33712	R$ 28508
Energy development account (CDE) [member]
DisclosureOfCustomerChargesDueLineItems [Line Items]
Sectorial charges due	5,700	4,104
Global reversal reserve (RGR) [member]
DisclosureOfCustomerChargesDueLineItems [Line Items]
Sectorial charges due	12,446	12,068
Tariff flags [member]
DisclosureOfCustomerChargesDueLineItems [Line Items]
Sectorial charges due	R$ 15566	R$ 12336

25 Research and Development a_3

25 Research and Development and Energy Efficiency (Details) - BRL (R$) R$ in Thousands	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
DisclosureOfResearchAndDevelopmentAndEnergyEfficiencyLineItems [Line Items]
Amounts payable, before any related prepayments	R$ 258733
Amounts payable to regulatory agencies	17,981
Other amounts payable	388,297
Research and development and energy efficiency	665,011	R$ 658171	R$ 592735
Research and development and energy efficiency, current	380,186	375,395
Research and development and energy efficiency, noncurrent	284,825	282,776
MME [member]
DisclosureOfResearchAndDevelopmentAndEnergyEfficiencyLineItems [Line Items]
Research and development and energy efficiency	4,041	2,023	R$ 2361
Research and Development - R&D [member]
DisclosureOfResearchAndDevelopmentAndEnergyEfficiencyLineItems [Line Items]
Amounts payable, before any related prepayments	221,977
Amounts payable to regulatory agencies	12,126
Other amounts payable	110,769
Research and development and energy efficiency	344,872	347,727
Research and Development - R&D [member] | National Fund for Scientific and Technological Development - FNDCT [member]
DisclosureOfResearchAndDevelopmentAndEnergyEfficiencyLineItems [Line Items]
Amounts payable to regulatory agencies	8,085
Other amounts payable
Research and development and energy efficiency	8,085	4,046
Research and Development - R&D [member] | MME [member]
DisclosureOfResearchAndDevelopmentAndEnergyEfficiencyLineItems [Line Items]
Amounts payable to regulatory agencies	4,041
Other amounts payable
Research and development and energy efficiency	4,041	2,023
Research and Development - R&D [member] | R&D [member]
DisclosureOfResearchAndDevelopmentAndEnergyEfficiencyLineItems [Line Items]
Amounts payable, before any related prepayments	221,977
Amounts payable to regulatory agencies
Other amounts payable	110,769
Research and development and energy efficiency	332,746	341,658
EEP [member]
DisclosureOfResearchAndDevelopmentAndEnergyEfficiencyLineItems [Line Items]
Amounts payable, before any related prepayments	36,756
Amounts payable to regulatory agencies	5,855
Other amounts payable	277,528
Research and development and energy efficiency	320,139	310,444
EEP [member] | National Program of electricity conservation - Procel [member]
DisclosureOfResearchAndDevelopmentAndEnergyEfficiencyLineItems [Line Items]
Amounts payable to regulatory agencies	5,855
Other amounts payable
Research and development and energy efficiency	5,855	16,410
EEP [member] | EEP [member]
DisclosureOfResearchAndDevelopmentAndEnergyEfficiencyLineItems [Line Items]
Amounts payable, before any related prepayments	36,756
Amounts payable to regulatory agencies
Other amounts payable	277,528
Research and development and energy efficiency	R$ 314284	R$ 294034

25 Research and Development a_4

25 Research and Development and Energy Efficiency (Details 1) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
DisclosureOfChangesInResearchAndDevelopmentAndEnergyEfficiencyLineItems [Line Items]
Research and development and energy efficiency, beginning	R$ 658171	R$ 592735
Business combination effects		1,494
Additions	144,474	127,432
Performance agreement	3,545	3,246
Interest rate	12,550	24,570
Transfers
Payments	(71,675)	(54,166)
Concluded projects	(82,054)	(37,140)
Research and development and energy efficiency, ending	665,011	658,171
FNDCT [member]
DisclosureOfChangesInResearchAndDevelopmentAndEnergyEfficiencyLineItems [Line Items]
Research and development and energy efficiency, beginning	4,046	4,725
Business combination effects		20
Additions	37,427	32,311
Performance agreement
Interest rate
Transfers
Payments	(33,388)	(33,010)
Concluded projects
Research and development and energy efficiency, ending	8,085	4,046
MME [member]
DisclosureOfChangesInResearchAndDevelopmentAndEnergyEfficiencyLineItems [Line Items]
Research and development and energy efficiency, beginning	2,023	2,361
Business combination effects		10
Additions	18,716	16,155
Performance agreement
Interest rate
Transfers
Payments	(16,698)	(16,503)
Concluded projects
Research and development and energy efficiency, ending	4,041	2,023
R&D [member]
DisclosureOfChangesInResearchAndDevelopmentAndEnergyEfficiencyLineItems [Line Items]
Research and development and energy efficiency, beginning	341,658	327,626
Business combination effects		1,464
Additions	37,426	32,312
Performance agreement
Interest rate	4,253	10,627
Transfers
Payments
Concluded projects	(50,591)	(30,371)
Research and development and energy efficiency, ending	332,746	341,658
Procel [member]
DisclosureOfChangesInResearchAndDevelopmentAndEnergyEfficiencyLineItems [Line Items]
Research and development and energy efficiency, beginning	16,410	15,792
Business combination effects
Additions	10,181	9,333
Performance agreement
Interest rate	1,469	51
Transfers	(616)	(3,123)
Payments	(21,589)	(5,643)
Concluded projects
Research and development and energy efficiency, ending	5,855	16,410
EEP [member]
DisclosureOfChangesInResearchAndDevelopmentAndEnergyEfficiencyLineItems [Line Items]
Research and development and energy efficiency, beginning	294,034	242,231
Business combination effects
Additions	40,724	37,321
Performance agreement	3,545	3,246
Interest rate	6,828	13,892
Transfers	616	3,123
Payments		990
Concluded projects	(31,463)	(6,769)
Research and development and energy efficiency, ending	R$ 314284	R$ 294034

26 Accounts Payable Related t_3

26 Accounts Payable Related to Concessions (Details) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
DisclosureOfAccountsPayableRelatedToConcessionsLineItems [Line Items]
Accounts payable related to concession	R$ 731864	R$ 612587	R$ 584163
Accounts payable related to concession, current	88,951	73,032
Accounts payable related to concession, noncurrent	R$ 642913	539,555
HPP Maua [member]
DisclosureOfAccountsPayableRelatedToConcessionsLineItems [Line Items]
Public property name	HPP Maua
Company	Copel GeT
Grant	Jun. 29, 2007
Signature	Jul. 3, 2007
Closing	07.2042
Discount rate	5.65% p.y.
Annual adjustment	IPCA
Accounts payable related to concession	R$ 17213	16,890
HPP Colider [member]
DisclosureOfAccountsPayableRelatedToConcessionsLineItems [Line Items]
Public property name	HPP Colider
Company	Copel GeT
Grant	Dec. 29, 2010
Signature	Jan. 17, 2011
Closing	01.2046
Discount rate	7.74% p.y.
Annual adjustment	IPCA
Accounts payable related to concession	R$ 25075	24,353
HPP Baixo Iguacu [member]
DisclosureOfAccountsPayableRelatedToConcessionsLineItems [Line Items]
Public property name	HPP Baixo Iguacu
Company	Copel GeT
Grant	Jul. 19, 2012
Signature	Aug. 20, 2012
Closing	01.2047
Discount rate	7.74% p.y.
Annual adjustment	IPCA
Accounts payable related to concession	R$ 7841	7,588
HPP Guaricana [member]
DisclosureOfAccountsPayableRelatedToConcessionsLineItems [Line Items]
Public property name	HPP Guaricana
Company	Copel GeT
Grant	Mar. 3, 2020
Signature	Mar. 3, 2020
Closing	03.2025
Discount rate	7.74% p.y.
Annual adjustment	IPCA
Accounts payable related to concession	R$ 3299
HPP Fundao e HPP Santa Clara [member]
DisclosureOfAccountsPayableRelatedToConcessionsLineItems [Line Items]
Public property name	HPP Fundao e HPP Santa Clara
Company	Elejor
Grant	Oct. 23, 2001
Signature	Oct. 25, 2001
Closing	10.2036
Discount rate	11.00% p.y.
Annual adjustment	IGPM
Accounts payable related to concession	R$ 678436	R$ 563756

26 Accounts Payable Related t_4

26 Accounts Payable Related to Concessions (Details 1) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Accounts Payable Related To Concessions
Accounts payable related to concession, beginning	R$ 612587	R$ 584163
Additions	3,682
Adjust to present value	(1,112)	(668)
Monetary variations	191,638	99,661
Payments	(74,931)	(70,569)
Accounts payable related to concession, ending	R$ 731864	R$ 612587

26 Accounts Payable Related t_5

26 Accounts Payable Related to Concessions (Details 2) - BRL (R$) R$ in Thousands	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
DisclosureOfAccountsPayableRelatedToConcessionsLineItems [Line Items]
Accounts payable related to concession	R$ 731864	R$ 612587	R$ 584163
Present value [member]
DisclosureOfAccountsPayableRelatedToConcessionsLineItems [Line Items]
Accounts payable related to concession	731,864
Present value [member] | 2021 [member]
DisclosureOfAccountsPayableRelatedToConcessionsLineItems [Line Items]
Accounts payable related to concession	88,951
Present value [member] | 2022 [member]
DisclosureOfAccountsPayableRelatedToConcessionsLineItems [Line Items]
Accounts payable related to concession	78,757
Present value [member] | 2022 [member]
DisclosureOfAccountsPayableRelatedToConcessionsLineItems [Line Items]
Accounts payable related to concession	71,101
Present value [member] | 2023 [member]
DisclosureOfAccountsPayableRelatedToConcessionsLineItems [Line Items]
Accounts payable related to concession	64,195
Present value [member] | After 2024 [member]
DisclosureOfAccountsPayableRelatedToConcessionsLineItems [Line Items]
Accounts payable related to concession	428,860
Nominal value [member]
DisclosureOfAccountsPayableRelatedToConcessionsLineItems [Line Items]
Accounts payable related to concession	1,505,293
Nominal value [member] | 2021 [member]
DisclosureOfAccountsPayableRelatedToConcessionsLineItems [Line Items]
Accounts payable related to concession	87,432
Nominal value [member] | 2022 [member]
DisclosureOfAccountsPayableRelatedToConcessionsLineItems [Line Items]
Accounts payable related to concession	87,432
Nominal value [member] | 2022 [member]
DisclosureOfAccountsPayableRelatedToConcessionsLineItems [Line Items]
Accounts payable related to concession	87,432
Nominal value [member] | 2023 [member]
DisclosureOfAccountsPayableRelatedToConcessionsLineItems [Line Items]
Accounts payable related to concession	87,432
Nominal value [member] | After 2024
DisclosureOfAccountsPayableRelatedToConcessionsLineItems [Line Items]
Accounts payable related to concession	R$ 1155565

27 Right-of-use asset and lea_3

27 Right-of-use asset and lease liability (Details) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Disclosure of quantitative information about right-of-use assets [line items]
Initial adoption on beginning	R$ 92831	R$ 118022
Additions	103,571	9,353
Remeasurement Adjustment	1,406	3,884
Amortization	(51,489)	(34,205)
Loss on disposal	(2,551)	(4,223)
Reclassification	(11,247)
Initial adoption on end	132,521	92,831
Real Estate [member]
Disclosure of quantitative information about right-of-use assets [line items]
Initial adoption on beginning	40,155	57,461
Additions	5,319	2,484
Remeasurement Adjustment	75	914
Amortization	(18,433)	(17,705)
Loss on disposal	(2,551)	(2,999)
Reclassification	(1,181)
Initial adoption on end	23,384	40,155
Vehicles and Aircraft [member]
Disclosure of quantitative information about right-of-use assets [line items]
Initial adoption on beginning	46,400	57,564
Additions	79,455	2,295
Remeasurement Adjustment	1,331	2,970
Amortization	(28,176)	(15,205)
Loss on disposal		(1,224)
Reclassification	(8,694)
Initial adoption on end	90,316	46,400
Equipment [member]
Disclosure of quantitative information about right-of-use assets [line items]
Initial adoption on beginning	6,276	2,997
Additions	18,797	4,574
Remeasurement Adjustment
Amortization	4,880	1,295
Loss on disposal
Reclassification	(1,372)
Initial adoption on end	R$ 18821	R$ 6276

27 Right-of-use asset and lea_4

27 Right-of-use asset and lease liability (Details 1) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Right of Use Asset And Lease Liability [Abstract]
Initial adoption on beginning	R$ 96604	R$ 118022
Additions	103,571	9,353
Remeasurement Adjustment	1,406	3,884
Charges	10,528	9,675
Amortization - principal	(51,761)	(30,946)
Payment - charges	(7,577)	(9,130)
Baixas		(4,254)
Write-offs	(2,670)
Reclassification	(11,740)
Initial adoption on end	138,361	R$ 96604
Current	41,193
Noncurrent	R$ 97168

27 Right-of-use asset and lea_5

27 Right-of-use asset and lease liability (Details 2) R$ in Thousands	Dec. 31, 2020BRL (R$)
Right of Use Asset And Lease Liability [Abstract]
2022	R$ 41948
2023	27,625
2024	19,656
2025	8,953
2026	51
After 2026	889
Undiscounted amounts	99,122
Embedded interest	(1,954)
Lease Liabilities balance	R$ 97168

27 Right-of-use asset and lea_6

27 Right-of-use asset and lease liability (Details 3) - Cash Flow Hedges [member] R$ in Thousands	Dec. 31, 2020BRL (R$)
Lease Consideration [member]
Disclosure of quantitative information about right-of-use assets [line items]
Nominal	R$ 156287
Present value	138,361
Potential Pis / Cofins [member]
Disclosure of quantitative information about right-of-use assets [line items]
Nominal	12,498
Present value	R$ 11333

27 Right-of-use asset and lea_7

27 Right-of-use asset and lease liability (Details 4) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disclosure of quantitative information about right-of-use assets [line items]
Lease liabilities	R$ 138361	R$ 96604	R$ 118022
Right to use assets	132,521
Depreciation expense	R$ 51489	R$ 34205
Lease liabilities, percent	12.04%
Right to use assets, percent	9.30%
Financial expense, percent	12.68%
Depreciation expense, percent	8.41%
Balance in Accordance with IFRS 16 [member]
Disclosure of quantitative information about right-of-use assets [line items]
Lease liabilities	R$ 138361
Right to use assets	132,521
Financial expense	9,510
Depreciation expense	45,090
Inflation projected balance [member]
Disclosure of quantitative information about right-of-use assets [line items]
Lease liabilities	155,015
Right to use assets	144,842
Financial expense	10,716
Depreciation expense	R$ 48883

27 Right-of-use asset and lea_8

27 Right-of-use asset and lease liability (Details 5) R$ in Thousands	Dec. 31, 2020BRL (R$)
Disclosure of quantitative information about right-of-use assets [line items]
Commitments from leases and rents	R$ 203320
Less than 1 year [member]
Disclosure of quantitative information about right-of-use assets [line items]
Commitments from leases and rents	7,328
1 to 5 Years [member]
Disclosure of quantitative information about right-of-use assets [line items]
Commitments from leases and rents	31,843
Over 5 Years [member]
Disclosure of quantitative information about right-of-use assets [line items]
Commitments from leases and rents	R$ 164149

28 Other Accounts Payable (Deta

28 Other Accounts Payable (Details) - BRL (R$) R$ in Thousands		Dec. 31, 2020	Dec. 31, 2019
DisclosureOfOtherAccountsPayableLineItems [Line Items]
Other accounts payable		R$ 705286	R$ 498869
Other accounts payable, current		235,400	149,407
Other accounts payable, noncurrent		469,886	349,462
Fair value in the purchase and sale of power [member]
DisclosureOfOtherAccountsPayableLineItems [Line Items]
Other accounts payable		343,406	251,973
Generation deviation - wind projects [member]
DisclosureOfOtherAccountsPayableLineItems [Line Items]
Other accounts payable		94,089
Public lighting rate collected [member]
DisclosureOfOtherAccountsPayableLineItems [Line Items]
Other accounts payable		48,188	38,805
Customers [member]
DisclosureOfOtherAccountsPayableLineItems [Line Items]
Other accounts payable		44,508	43,024
Obligations to customers in gas sales operations [member]
DisclosureOfOtherAccountsPayableLineItems [Line Items]
Other accounts payable	[1]	29,508	39,665
Aneel Order No. 084/2017 provision [member]
DisclosureOfOtherAccountsPayableLineItems [Line Items]
Other accounts payable		29,174	26,008
Pledges in guarantee [member]
DisclosureOfOtherAccountsPayableLineItems [Line Items]
Other accounts payable		16,409	9,257
Investment acquisition [member]
DisclosureOfOtherAccountsPayableLineItems [Line Items]
Other accounts payable		14,169	13,294
Financial offset for the use of water resources [member]
DisclosureOfOtherAccountsPayableLineItems [Line Items]
Other accounts payable		9,799	12,535
Reimbursements to customer contributions [member]
DisclosureOfOtherAccountsPayableLineItems [Line Items]
Other accounts payable		4,893	4,887
Derivatives fair value - forward contract [member]
DisclosureOfOtherAccountsPayableLineItems [Line Items]
Other accounts payable			1,203
Other liabilities [member]
DisclosureOfOtherAccountsPayableLineItems [Line Items]
Other accounts payable		R$ 71143	R$ 58218
[1]	Refers to amounts paid for the purchase of contracted gas volumes not yet taken by customers.

29 Provisions for Legal Claim_3

29 Provisions for Legal Claims and Contingent Liabilities (Details) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2020		Dec. 31, 2019
DisclosureOfProvisionsForLegalClaimsAndContingentLiabilitiesLineItems [Line Items]
Provisions for legal claims, beginning	R$ 1606713		R$ 1664773
Provision for litigations, additions	278,349		345,765
Provision for litigations, reversals	(121,856)		(81,651)
Construction cost, additions/(rev.)	(7,075)		9,521
Additions to assets	5,869		8,121
Discharges	(172,025)		(367,548)
Transfers/others	(34,271)	[1]	27,732
Provisions for legal claims, ending	1,555,704		1,606,713
Tax [member]
DisclosureOfProvisionsForLegalClaimsAndContingentLiabilitiesLineItems [Line Items]
Provisions for legal claims, beginning	175,790		157,097
Provision for litigations, additions	50,813		9,148
Provision for litigations, reversals	(49,381)		(16,884)
Construction cost, additions/(rev.)
Additions to assets
Discharges	(244)		(1,258)
Transfers/others	(3,105)	[1]	27,687
Provisions for legal claims, ending	173,873		175,790
Tax [member] | Cofins [member]
DisclosureOfProvisionsForLegalClaimsAndContingentLiabilitiesLineItems [Line Items]
Provisions for legal claims, beginning	104,284		102,603
Provision for litigations, additions	2,864		4,307
Provision for litigations, reversals			(2,626)
Construction cost, additions/(rev.)
Additions to assets
Discharges
Transfers/others		[1]
Provisions for legal claims, ending	107,148		104,284
Tax [member] | Others [member]
DisclosureOfProvisionsForLegalClaimsAndContingentLiabilitiesLineItems [Line Items]
Provisions for legal claims, beginning	71,506		54,494
Provision for litigations, additions	47,949		4,841
Provision for litigations, reversals	(49,381)		(14,258)
Construction cost, additions/(rev.)
Additions to assets
Discharges	(244)		(1,258)
Transfers/others	(3,105)	[1]	27,687
Provisions for legal claims, ending	66,725		71,506
Labors [member]
DisclosureOfProvisionsForLegalClaimsAndContingentLiabilitiesLineItems [Line Items]
Provisions for legal claims, beginning	673,062		612,782
Provision for litigations, additions	102,315		194,550
Provision for litigations, reversals	(4,297)		(23)
Construction cost, additions/(rev.)
Additions to assets
Discharges	(145,228)		(134,247)
Transfers/others	(29,604)	[1]
Provisions for legal claims, ending	596,248		673,062
Employee Benefits [member]
DisclosureOfProvisionsForLegalClaimsAndContingentLiabilitiesLineItems [Line Items]
Provisions for legal claims, beginning	86,297		85,199
Provision for litigations, additions	11,439		27,426
Provision for litigations, reversals	(43,524)		(18,747)
Construction cost, additions/(rev.)
Additions to assets
Discharges	(783)		(7,581)
Transfers/others	(1,028)	[1]
Provisions for legal claims, ending	52,401		86,297
Civil [member]
DisclosureOfProvisionsForLegalClaimsAndContingentLiabilitiesLineItems [Line Items]
Provisions for legal claims, beginning	591,756		736,222
Provision for litigations, additions	102,827		106,715
Provision for litigations, reversals	(23,621)		(45,451)
Construction cost, additions/(rev.)	(7,075)		9,521
Additions to assets	5,869		8,121
Discharges	(24,739)		(223,417)
Transfers/others	(534)	[1]	45
Provisions for legal claims, ending	644,483		591,756
Civil [member] | Civil And Administrative Claims [member]
DisclosureOfProvisionsForLegalClaimsAndContingentLiabilitiesLineItems [Line Items]
Provisions for legal claims, beginning	336,962		492,934
Provision for litigations, additions	94,500		101,438
Provision for litigations, reversals	(20,581)		(36,271)
Construction cost, additions/(rev.)
Additions to assets
Discharges	(22,452)		(221,139)
Transfers/others	(534)	[1]
Provisions for legal claims, ending	387,895		336,962
Civil [member] | Easements [member]
DisclosureOfProvisionsForLegalClaimsAndContingentLiabilitiesLineItems [Line Items]
Provisions for legal claims, beginning	127,010		118,147
Provision for litigations, additions	286		711
Provision for litigations, reversals	(543)		(3,470)
Construction cost, additions/(rev.)	(13,748)		12,456
Additions to assets	667		1,012
Discharges	(2,119)		(1,891)
Transfers/others		[1]	45
Provisions for legal claims, ending	111,553		127,010
Civil [member] | Expropriations And Property [member]
DisclosureOfProvisionsForLegalClaimsAndContingentLiabilitiesLineItems [Line Items]
Provisions for legal claims, beginning	118,757		116,401
Provision for litigations, additions	4,634		2,844
Provision for litigations, reversals	(1,217)		(4,501)
Construction cost, additions/(rev.)	6,673		(2,935)
Additions to assets	5,202		7,109
Discharges	(161)		(161)
Transfers/others		[1]
Provisions for legal claims, ending	133,888		118,757
Civil [member] | Customers [member]
DisclosureOfProvisionsForLegalClaimsAndContingentLiabilitiesLineItems [Line Items]
Provisions for legal claims, beginning	4,956		5,209
Provision for litigations, additions	299		390
Provision for litigations, reversals	(1,275)		(643)
Construction cost, additions/(rev.)
Additions to assets
Discharges	(7)
Transfers/others		[1]
Provisions for legal claims, ending	3,973		4,956
Civil [member] | Environmental [member]
DisclosureOfProvisionsForLegalClaimsAndContingentLiabilitiesLineItems [Line Items]
Provisions for legal claims, beginning	4,071		3,531
Provision for litigations, additions	3,108		1,332
Provision for litigations, reversals	(5)		(226)
Construction cost, additions/(rev.)
Additions to assets
Discharges			(566)
Transfers/others		[1]
Provisions for legal claims, ending	7,174		4,071
Regulatory [member]
DisclosureOfProvisionsForLegalClaimsAndContingentLiabilitiesLineItems [Line Items]
Provisions for legal claims, beginning	79,808		73,473
Provision for litigations, additions	10,955		7,926
Provision for litigations, reversals	(1,033)		(546)
Construction cost, additions/(rev.)
Additions to assets
Discharges	(1,031)		(1,045)
Transfers/others		[1]
Provisions for legal claims, ending	R$ 88699		R$ 79808
[1]	Reclassification mainly to Liabilities associated with assets classified as held for sale (Note 40).

29 Provisions for Legal Claim_4

29 Provisions for Legal Claims and Contingent Liabilities (Details 1) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
DisclosureOfProvisionsForLegalClaimsAndContingentLiabilitiesLineItems [Line Items]
Provisions	R$ 1555704	R$ 1606713
Contingent liabilities	5,206,783	3,485,149
Tax [member]
DisclosureOfProvisionsForLegalClaimsAndContingentLiabilitiesLineItems [Line Items]
Provisions	173,873	175,790
Contingent liabilities	576,623	628,546
Tax [member] | Cofins [member]
DisclosureOfProvisionsForLegalClaimsAndContingentLiabilitiesLineItems [Line Items]
Provisions	107,148	104,284
Contingent liabilities	R$ 6554	6,415
Description	Requirement of the Federal Revenue Service for the period from August 1995 to December 1996, due to the termination of a judicial decision that has recognized the Company's exemption from Cofins.
Tax [member] | INSS [member]
DisclosureOfProvisionsForLegalClaimsAndContingentLiabilitiesLineItems [Line Items]
Provisions	R$ 29405	30,744
Contingent liabilities	R$ 100165	117,018
Description	Tax requirements related to the social security contribution.
Tax [member] | Federal taxes [member]
DisclosureOfProvisionsForLegalClaimsAndContingentLiabilitiesLineItems [Line Items]
Provisions
Contingent liabilities	R$ 84027	105,800
Description	Administrative requirements and questions from the Federal Revenue of Brazil.
Tax [member] | ICMS [member]
DisclosureOfProvisionsForLegalClaimsAndContingentLiabilitiesLineItems [Line Items]
Provisions
Contingent liabilities	R$ 97404	87,657
Description	Copel Distribution received tax deficiency notice 6.587.156-4 from the State of Paraná for allegedly failing to pay ICMS (VAT) tax on the 'metered demand' highlighted in the electricity bills issued to a major consumer between May 2011 and December 2013. The Company maintains its illegitimacy to appear in the taxable position of this tax assessment, since it was not included in the judicial proceeding, thus it cannot suffer the effects of the ruling rendered thereon, which would entail its illegitimacy to appear as liable taxpayer in tax deficiency notice issued. The Company filed a writ of mandamus at 07.16.2019, having obtained an injunction to suspend the enforceability of the tax credit.
Tax [member] | IPTU [member]
DisclosureOfProvisionsForLegalClaimsAndContingentLiabilitiesLineItems [Line Items]
Provisions
Contingent liabilities	R$ 98459	87,006
Description	Tax Requirement on Urban Territorial Property on properties affected by the public electricity service.
Tax [member] | ISS [member]
DisclosureOfProvisionsForLegalClaimsAndContingentLiabilitiesLineItems [Line Items]
Provisions
Contingent liabilities	R$ 73094	65,443
Description	City halls tax requirement as ISS on construction services provided by third parties.
Tax [member] | Others [member]
DisclosureOfProvisionsForLegalClaimsAndContingentLiabilitiesLineItems [Line Items]
Provisions	R$ 37320	40,762
Contingent liabilities	R$ 116920	159,207
Description	Taxes, fees and other federal, state and municipal taxes in which the Company discusses the levy or not, as well as its bases and amounts for payment
Labor [member]
DisclosureOfProvisionsForLegalClaimsAndContingentLiabilitiesLineItems [Line Items]
Provisions	R$ 596248	673,062
Contingent liabilities	R$ 345080	419,917
Description	Charging of overtime, hazardous work, transfer surcharge, equalization / salary adjustment, among others, by employees and former employees of Copel; collection of indemnity installments and others, by ex-employees of contractors and outsourced companies (subsidiary responsibility).
Employee Benefits [member]
DisclosureOfProvisionsForLegalClaimsAndContingentLiabilitiesLineItems [Line Items]
Provisions	R$ 52401	86,297
Contingent liabilities	R$ 9210	21,338
Description	Labor claims filed by former retired employees against Fundação Copel, which will consequently cause repercussions for the Company and its wholly-owned subsidiaries, to the extent that additional contributions are required.
Regulatory [member]
DisclosureOfProvisionsForLegalClaimsAndContingentLiabilitiesLineItems [Line Items]
Provisions	R$ 88699	79,808
Contingent liabilities	1,158,993	1,141,420
Regulatory [member] | Others [member]
DisclosureOfProvisionsForLegalClaimsAndContingentLiabilitiesLineItems [Line Items]
Provisions	R$ 18511	22,808
Contingent liabilities		8,104
Description	Aneel's notifications about possible breaches of regulatory standards
Regulatory [member] | Dispatch Aneel n 288/2002 [member]
DisclosureOfProvisionsForLegalClaimsAndContingentLiabilitiesLineItems [Line Items]
Provisions	R$ 70188	57,000
Description	Legal actions against Aneel Dispatch No. 288/2002 involving the companies Companhia Estadual de Energia Elétrica - CEEE and Dona Francisca Energética S.A.
Regulatory [member] | ESBR [member]
DisclosureOfProvisionsForLegalClaimsAndContingentLiabilitiesLineItems [Line Items]
Provisions
Contingent liabilities	R$ 942640	1,034,593
Description	ESBR filed Ordinary Lawsuit No. 10426-71.2013.4.01.4100 against ANEEL in the Federal Court of Rondônia, whose ruling: (i) acknowledged the exclusion of liability for the 535-day schedule overrun in the construction of the Jirau Hydropower Station; (ii) declares any obligations, penalties and costs imposed on ESBR as a result of the schedule overrun to be unenforceable, and (iii) annuls ANEEL Resolution 1,732/2013, which had recognized a schedule overrun of only 52 days. An appeal has been brought by ANEEL, pending judgment by the Federal Court of the 1st Region. The practical consequence of the ruling was, at the time it exempted ESBR, to expose the distributors with whom it entered into power trading contracts (CCEARs) to the Short-Term Market and to the high value of the Settlement Price of the Differences (Preço de Liquidação das Diferenças - PLD, in Portuguese) in the period, including Copel DIS. This occurred because the rules for the sale of electricity require that all energy consumed should have a corresponding contractual coverage. If the lawsuits are judged unfavorably against Copel, the amount will be classified as Sectorial Financial Asset to be recovered through tariff rates.
Regulatory [member] | Colider Exclusion of Liability [member]
DisclosureOfProvisionsForLegalClaimsAndContingentLiabilitiesLineItems [Line Items]
Provisions
Contingent liabilities	R$ 216353	98,723
Description	Discussion on the value of the Tariff for use of the transmission system - TUST and monetary adjustment on energy values ​​referring to the exclusion of liability period. As a result of the court injunction that excluded the delay period for the Colíder HPP from being responsible for the delivery of energy contracted in the Regulated Contracting Environment - ACR, CCEE proceeded to credit, valued to PLD, the energy previously backed to comply with ACR. However, in the event of failure in the lawsuit, the Company must return the amounts credited, updated by the IGPM.
Civil [member]
DisclosureOfProvisionsForLegalClaimsAndContingentLiabilitiesLineItems [Line Items]
Provisions	R$ 644483	591,756
Contingent liabilities	3,116,877	1,273,928
Civil [member] | Tobacco growers [member]
DisclosureOfProvisionsForLegalClaimsAndContingentLiabilitiesLineItems [Line Items]
Provisions	50,330	48,977
Contingent liabilities	R$ 41258	34,792
Description	Actions whose main cause is the lack of electricity causing loss of production.
Civil [member] | Department of Roads and Roadworks [member]
DisclosureOfProvisionsForLegalClaimsAndContingentLiabilitiesLineItems [Line Items]
Provisions
Contingent liabilities	R$ 95669	85,277
Description	The Department of Roads and Roadworks (Departamento de Estradas e Rodagens - DER, in Portuguese) - issued a tax assessment notice to Copel Distribuição which, in turn, filed a lawsuit challenging DER's Charge for Use or Occupancy of Highway Domain Range, since the Company understands that this charge is unconstitutional because it has a confiscatory nature.
Civil [member] | Arbitration [member]
DisclosureOfProvisionsForLegalClaimsAndContingentLiabilitiesLineItems [Line Items]
Provisions	R$ 125719	119,579
Contingent liabilities	R$ 510543	485,607
Description	Discussion by arbitration under secrecy and confidentiality, in the discovery phase, with no decision having been handed down to date.
Civil [member] | PIS / COFINS credit on ICMS [member]
DisclosureOfProvisionsForLegalClaimsAndContingentLiabilitiesLineItems [Line Items]
Provisions
Contingent liabilities	R$ 1755112
Description	Referring to estimated contingent liability, as per Management’s judgment and the opinion of its legal counsel, regarding the adventitious filing of claims by consumers in connection with the recognized tax credit, as detailed in Note 13.2.1, referring to the period infringing the tax neutrality rule, between the 11th and the 16th years, of a total of 16 years considered in the action. On February 9, 2021, Aneel opened Public Consultation 005/2021 to obtain subsidies until March 29, 2020, in order to improve the proposal to return these tax credits to consumers. Aneel's technical areas prepared a technical note to the aforementioned Public Consultation, delimiting its scope for economic and financial analysis, but without discussing the legal aspects brought up in the scope of Grant 005/2020 and that permeate the theme. The Company and its legal advisors evaluated the documents made available at Public Consultation 005/2021 and are working on preparing their contributions in order to solidify their understanding and safeguard their rights.
Civil [member] | Civil and administrative law [member]
DisclosureOfProvisionsForLegalClaimsAndContingentLiabilitiesLineItems [Line Items]
Provisions	R$ 133560	139,893
Contingent liabilities	R$ 282794	300,061
Description	Other actions involving billing, supposed irregular procedures, administrative contracts and contractual fines, indemnity for accidents with the electric power network and accident with vehicles.
Civil [member] | Indemnification to third parties (civil) [member]
DisclosureOfProvisionsForLegalClaimsAndContingentLiabilitiesLineItems [Line Items]
Provisions	R$ 82146	28,513
Contingent liabilities	R$ 38127	26,104
Description	Actions for indemnity for resulting from damages caused during the construction of power plants
Civil [member] | Easements [member]
DisclosureOfProvisionsForLegalClaimsAndContingentLiabilitiesLineItems [Line Items]
Provisions	R$ 110652	127,010
Contingent liabilities	R$ 26001	24,635
Description	Discussion between the amount determined by Copel for payment and the amount claimed by the property owner and/or when when the owner's documentation supporting title to the property may not be registered (when probate proceedings are still in progress, properties have no registry number with the land registry, etc.), intervention in third-party adverse possession, either as a confronter, or in case of a property where there are areas of easement of passage, in order to preserve the limits and boundaries of expropriated areas.
Civil [member] | Expropriations and property [member]
DisclosureOfProvisionsForLegalClaimsAndContingentLiabilitiesLineItems [Line Items]
Provisions	R$ 86207	80,079
Contingent liabilities	R$ 138341	120,760
Description	Discussion between the amount assessed by Copel for payment and the amount claimed by the owner, and / or when the owner's documentation does not present conditions for registration (inventories in progress, properties without registration, among others); actions for repossession of real estate owned by the concessionaire; intervention in the adverse possession of third parties, as a confrontant, in order to preserve the limits and confrontations of the expropriated areas.
Civil [member] | Indemnification to third parties (expropriations) [member]
DisclosureOfProvisionsForLegalClaimsAndContingentLiabilitiesLineItems [Line Items]
Provisions	R$ 44775	38,678
Contingent liabilities	R$ 45196	36,807
Description	Expropriation lawsuit for construction of electric substation and expropriation of property flooded of power plant.
Civil [member] | Consumers [member]
DisclosureOfProvisionsForLegalClaimsAndContingentLiabilitiesLineItems [Line Items]
Provisions	R$ 3920	4,956
Contingent liabilities	R$ 3768
Description	Lawsuits seeking compensation for damages caused in household appliances, industrial and commercial machines, lawsuits claiming damages for pain and suffering caused by service interruption and lawsuits filed by industrial consumers, challenging the lawfulness of the increase in electricity prices while Plano Cruzado (anti-inflation economic plan) was in effect and claiming reimbursement for the amounts paid by the Company.
Civil [member] | Environmental [member]
DisclosureOfProvisionsForLegalClaimsAndContingentLiabilitiesLineItems [Line Items]
Provisions	R$ 7174	4,071
Contingent liabilities	R$ 180068	R$ 159885
Description	Public civil and class actions whose purpose is to obstruct the progress of environmental licensing for new projects or to recover permanent preservation areas located around the hydroelectric power plant dams unlawfully used by private individuals. If the outcome of the lawsuits is unfavorable to the Company, Management estimates only the cost to prepare new environmental studies and to recover the areas owned by Copel GeT. They also include the Commitment Agreements (Termos de Ajuste de Conduta - TAC, in Portuguese), which refer to the commitments agreed-upon and approved between the Company and the relevant bodies, for noncompliance with any condition provided for by the Installation and Operating Licenses.

30 Equity (Details)

30 Equity (Details)	Dec. 31, 2020shares
Disclosure of classes of share capital [line items]
Number of shares	2,736,553,750
Percent	100.00%
Common [member]
Disclosure of classes of share capital [line items]
Number of shares	1,450,310,800
Percent	100.00%
Class "B" preferred [member]
Disclosure of classes of share capital [line items]
Number of shares	1,282,975,430
Percent	100.00%
Class "A" preferred [member]
Disclosure of classes of share capital [line items]
Number of shares	3,267,520
Percent	100.00%
State of parana [member]
Disclosure of classes of share capital [line items]
Number of shares	850,285,980
Percent	31.07%
State of parana [member] | Common [member]
Disclosure of classes of share capital [line items]
Number of shares	850,285,980
Percent	58.63%
BNDES [member]
Disclosure of classes of share capital [line items]
Number of shares	655,807,810
Percent	23.96%
BNDES [member] | Common [member]
Disclosure of classes of share capital [line items]
Number of shares	382,987,750
Percent	26.41%
BNDES [member] | Class "B" preferred [member]
Disclosure of classes of share capital [line items]
Number of shares	272,820,060
Percent	21.26%
Eletrobras [member]
Disclosure of classes of share capital [line items]
Number of shares	15,307,740
Percent	0.56%
Eletrobras [member] | Common [member]
Disclosure of classes of share capital [line items]
Number of shares	15,307,740
Percent	1.06%
Free float: B3 [member]
Disclosure of classes of share capital [line items]
Number of shares	972,748,740
Percent	35.56%
Free float: B3 [member] | Common [member]
Disclosure of classes of share capital [line items]
Number of shares	197,200,880
Percent	13.59%
Free float: B3 [member] | Class "B" preferred [member]
Disclosure of classes of share capital [line items]
Number of shares	774,780,030
Percent	60.40%
Free float: B3 [member] | Class "A" preferred [member]
Disclosure of classes of share capital [line items]
Number of shares	767,830
Percent	23.50%
Free float: NYSE [member]
Disclosure of classes of share capital [line items]
Number of shares	234,311,920
Percent	8.56%
Free float: NYSE [member] | Common [member]
Disclosure of classes of share capital [line items]
Number of shares	1,163,450
Percent	0.08%
Free float: NYSE [member] | Class "B" preferred [member]
Disclosure of classes of share capital [line items]
Number of shares	233,148,470
Percent	18.17%
Free Float: Latibex [member]
Disclosure of classes of share capital [line items]
Number of shares	1,721,110
Percent	0.06%
Free Float: Latibex [member] | Class "B" preferred [member]
Disclosure of classes of share capital [line items]
Number of shares	1,721,110
Percent	0.13%
City halls [member]
Disclosure of classes of share capital [line items]
Number of shares	1,911,900
Percent	0.07%
City halls [member] | Common [member]
Disclosure of classes of share capital [line items]
Number of shares	1,783,930
Percent	0.12%
City halls [member] | Class "B" preferred [member]
Disclosure of classes of share capital [line items]
Number of shares	34,710
City halls [member] | Class "A" preferred [member]
Disclosure of classes of share capital [line items]
Number of shares	93,260
Percent	2.85%
Other shareholders [member]
Disclosure of classes of share capital [line items]
Number of shares	4,458,550
Percent	0.16%
Other shareholders [member] | Common [member]
Disclosure of classes of share capital [line items]
Number of shares	1,581,070
Percent	0.11%
Other shareholders [member] | Class "B" preferred [member]
Disclosure of classes of share capital [line items]
Number of shares	471,050
Percent	0.04%
Other shareholders [member] | Class "A" preferred [member]
Disclosure of classes of share capital [line items]
Number of shares	2,406,430
Percent	73.65%

30 Equity (Details 1)

30 Equity (Details 1) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
EQUITY
Equity valuation adjustments, beginning	R$ 591927	R$ 785610
Adjustments related to actuarial liabilities
Post employment benefits	(271,345)	(186,628)
Taxes on adjustments	92,190	63,444
Realization of equity evaluation adjustment
Deemed cost of fixed assets	(90,347)	(100,342)
Taxes on the adjustments	30,717	34,116
Attributed to non-controlling interest	207	(4,273)
Equity valuation adjustments, ending	R$ 353349	R$ 591927

30 Equity (Details 2)

30 Equity (Details 2) - BRL (R$) R$ / shares in Units, R$ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Net income for the year	R$ 3904202
Legal Reserve (5%)	(195,210)
Realization of equity evaluation adjustment	59,630
Calculation basis for minimum mandatory dividends	3,768,622
Minimum mandatory dividend	942,156
Interest on own capital - gross value	807,500
Tax on interest on own capital	(76,401)
Interest on own capital, net	731,099
Complement to reach the mandatory minimum	211,057
Proposed additional dividend from non-capitalized earnings reserve (30.4.1)	1,507,449
Total proposed distribution, net	2,435,463
Total proposed distribution	R$ 2526006
Gross value of dividends per share: ordinary shares	R$ 0.88128	R$ 0.22423	R$ 0.13195
Gross amount of dividends per class of shares: ordinary shares	R$ 1278126
Restated [Member]
Net income for the year		R$ 1989946	R$ 1407063
Legal Reserve (5%)		(99,497)	(70,353)
Realization of equity evaluation adjustment		66,226	67,086
Calculation basis for minimum mandatory dividends		1,956,675	1,403,796
Minimum mandatory dividend		489,169	350,949
Interest on own capital - gross value		643,000	280,000
Tax on interest on own capital		(56,584)	(27,593)
Interest on own capital, net		586,416	252,407
Complement to reach the mandatory minimum			98,542
Proposed additional dividend from non-capitalized earnings reserve (30.4.1)
Total proposed distribution, net		586,416	350,949
Total proposed distribution		643,000	R$ 378542
Interest on own capital, net, in advance, endorsed by CAD		R$ 97247
Gross value of dividends per share: ordinary shares		R$ 0.22423	R$ 0.13195
Gross amount of dividends per class of shares: ordinary shares		R$ 325210	R$ 191369
Class "A" preferred [member]
Gross value of dividends per share, preferred	R$ 1.27172
Gross amount of dividends per class of shares, preferred	R$ 4155
Class "A" preferred [member] | Restated [Member]
Gross value of dividends per share, preferred		R$ 0.39466	R$ 0.28905
Gross amount of dividends per class of shares, preferred		R$ 1291	R$ 950
Class "B" preferred [member]
Gross value of dividends per share, preferred	R$ 0.96941
Gross amount of dividends per class of shares, preferred	R$ 1243725
Class "B" preferred [member] | Restated [Member]
Gross value of dividends per share, preferred		R$ 0.24669	R$ 0.14515
Gross amount of dividends per class of shares, preferred		R$ 316499	R$ 186223

30 Equity (Details 3)

30 Equity (Details 3) - BRL (R$) R$ / shares in Units, R$ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Basic and diluted numerator
Basic and diluted earnings	R$ 3904202
Basic and diluted denominator
Weighted average of shares	2,736,553,750
Restated [Member]
Basic and diluted numerator
Basic and diluted earnings		R$ 1989946	R$ 1407063
Basic and diluted denominator
Weighted average of shares		2,736,553,750	2,736,553,750
Common shares [member]
Basic and diluted numerator
Basic and diluted earnings	R$ 1975751
Basic and diluted denominator
Weighted average of shares	1,450,310,800
Basic and diluted earnings per share attributable to shareholders of parent company	R$ 1.36229
Common shares [member] | Restated [Member]
Basic and diluted numerator
Basic and diluted earnings		R$ 1007102	R$ 712234
Basic and diluted denominator
Weighted average of shares		1,450,310,800	1,450,310,800
Basic and diluted earnings per share attributable to shareholders of parent company		R$ 0.69440	R$ 0.49109
Class "A" preferred [member]
Basic and diluted numerator
Basic and diluted earnings	R$ 5883
Basic and diluted denominator
Weighted average of shares	3,273,682
Basic and diluted earnings per share attributable to shareholders of parent company	R$ 1.80062
Class "A" preferred [member] | Restated [Member]
Basic and diluted numerator
Basic and diluted earnings		R$ 2809	R$ 1776
Basic and diluted denominator
Weighted average of shares		3,273,682	3,286,270
Basic and diluted earnings per share attributable to shareholders of parent company		R$ 0.85790	R$ 0.54020
Class "B" preferred [member]
Basic and diluted numerator
Basic and diluted earnings	R$ 1922568
Basic and diluted denominator
Weighted average of shares	1,282,969,268
Basic and diluted earnings per share attributable to shareholders of parent company	R$ 1.49852
Class "B" preferred [member] | Restated [Member]
Basic and diluted numerator
Basic and diluted earnings		R$ 980035	R$ 693053
Basic and diluted denominator
Weighted average of shares		1,282,969,268	1,282,956,680
Basic and diluted earnings per share attributable to shareholders of parent company		R$ 0.76388	R$ 0.54020
Continuing operations [member]
Basic and diluted numerator
Basic and diluted earnings	R$ 3823981	R$ 2078267	R$ 1308901
Basic and diluted denominator
Weighted average of shares	2,736,553,750	2,736,553,750	2,736,553,750
Continuing operations [member] | Common shares [member]
Basic and diluted numerator
Basic and diluted earnings	R$ 1935144	R$ 1051809	R$ 662546
Basic and diluted denominator
Weighted average of shares	1,450,310,800	1,450,310,800	1,450,310,800
Basic and diluted earnings per share attributable to shareholders of parent company	R$ 1.33430	R$ 0.72523	R$ 0.45683
Continuing operations [member] | Class "A" preferred [member]
Basic and diluted numerator
Basic and diluted earnings	R$ 5783	R$ 2920	R$ 1652
Basic and diluted denominator
Weighted average of shares	3,268,067	3,273,682	3,286,270
Basic and diluted earnings per share attributable to shareholders of parent company	R$ 1.76982	R$ 0.89086	R$ 0.50251
Continuing operations [member] | Class "B" preferred [member]
Basic and diluted numerator
Basic and diluted earnings	R$ 1883054	R$ 1023538	R$ 644703
Basic and diluted denominator
Weighted average of shares	1,282,974,883	1,282,969,268	1,282,956,680
Basic and diluted earnings per share attributable to shareholders of parent company	R$ 1.46773	R$ 0.79778	R$ 0.50251
Discontinued operations [member]
Basic and diluted numerator
Basic and diluted earnings	R$ 80221	R$ 88321	R$ 98162
Basic and diluted denominator
Weighted average of shares	2,736,553,750	2,736,553,750	2,736,553,750
Discontinued operations [member] | Common shares [member]
Basic and diluted numerator
Basic and diluted earnings	R$ 40607	R$ 44707	R$ 49688
Basic and diluted denominator
Weighted average of shares	1,450,310,800	1,450,310,800	1,450,310,800
Basic and diluted earnings per share attributable to shareholders of parent company	R$ 0.02800	R$ 0.03083	R$ 0.03426
Discontinued operations [member] | Class "A" preferred [member]
Basic and diluted numerator
Basic and diluted earnings	R$ 100	R$ 111	R$ 124
Basic and diluted denominator
Weighted average of shares	3,268,067	3,273,682	3,286,270
Basic and diluted earnings per share attributable to shareholders of parent company	R$ 0.03080	R$ 0.03391	R$ 0.03769
Discontinued operations [member] | Class "B" preferred [member]
Basic and diluted numerator
Basic and diluted earnings	R$ 39514	R$ 43503	R$ 48350
Basic and diluted denominator
Weighted average of shares	1,282,974,883	1,282,969,268	1,282,956,680
Basic and diluted earnings per share attributable to shareholders of parent company	R$ 0.03080	R$ 0.03391	R$ 0.03769

30 Equity (Details Narrative)

30 Equity (Details Narrative) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Disclosure of classes of share capital [line items]
Rights, preferences and restrictions attaching to class of share capital	Each common share entitles its holder to one vote in the general shareholders’ meetings. Preferred shares do not have voting rights and have two classes “A” and “B”.
Description of preferred shares dividends paid	Dividends paid to preferred shares must be at least 10% higher than those paid to common shares.
Paid-in share capital	R$ 10800000	R$ 10800000
Percentage of legal reserve on profit	5.00%
Percentage of issued capital on profit	20.00%
Capital increase
Class A Preferred Stock [member]
Disclosure of classes of share capital [line items]
Description of preferred shares dividends paid	Class "A" preferred shares have priority in the reimbursement of capital and in the distribution of minimum dividends of 10% p.a. (non-cumulative), calculated based on the capital represented by this class of shares.
Class "B" Preferred Stock [member]
Disclosure of classes of share capital [line items]
Description of preferred shares dividends paid	Class "B" preferred shares have priority in the reimbursement of capital and the right to the distribution of dividends, calculated as 25% of adjusted profit or loss for the year, pursuant to the corporate legislation and to the Company’s by-laws, calculated proportionately to the capital represented by the shares of this class. Dividends for Class “B” have priority only over the common shares and are only paid out of the remaining profits payment of priority dividends of class “A” shares.

31 Net Operating Revenue (Detai

31 Net Operating Revenue (Details) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disclosure of net operating revenue [line items]
Gross revenues	R$ 25939794
PIS/Pasep and Cofins	(1,227,978)
ICMS (VAT)	(4,216,720)
Sectorial charges	(1,857,343)	R$ 2161811	R$ 2457562
Service tax (ISSQN)	(4,504)
Net operating revenues	18,633,249
Restated [Member]
Disclosure of net operating revenue [line items]
Gross revenues		24,691,379	23,190,729
PIS/Pasep and Cofins		(2,243,383)	(2,094,148)
ICMS (VAT)		(4,518,791)	(4,085,153)
Sectorial charges		(2,161,811)	(2,457,562)
Service tax (ISSQN)		(3,333)	(3,402)
Net operating revenues		15,869,245	14,550,464
Electricity sales to final customers [member]
Disclosure of net operating revenue [line items]
Gross revenues	9,524,897
PIS/Pasep and Cofins	(737,647)
ICMS (VAT)	(1,960,998)
Sectorial charges	(173,428)
Service tax (ISSQN)
Net operating revenues	6,652,824
Electricity sales to final customers [member] | Restated [Member]
Disclosure of net operating revenue [line items]
Gross revenues		10,481,794	10,104,045
Net operating revenues		6,426,016	5,548,584
Electricity sales to distributors [member]
Disclosure of net operating revenue [line items]
Gross revenues	4,330,982
PIS/Pasep and Cofins	(467,817)
ICMS (VAT)	(21,637)
Sectorial charges	(61,698)
Service tax (ISSQN)
Net operating revenues	3,779,830
Electricity sales to distributors [member] | Restated [Member]
Disclosure of net operating revenue [line items]
Gross revenues		3,301,336	3,136,244
Net operating revenues		2,865,866	2,765,916
Use of the main distribution and transmission grid [member]
Disclosure of net operating revenue [line items]
Gross revenues	8,780,612
PIS/Pasep and Cofins	(667,419)
ICMS (VAT)	(2,118,380)
Sectorial charges	(1,622,217)
Service tax (ISSQN)
Net operating revenues	4,372,596
Use of the main distribution and transmission grid [member] | Restated [Member]
Disclosure of net operating revenue [line items]
Gross revenues		8,270,996	6,867,274
Net operating revenues		4,138,771	3,469,060
Construction income [member]
Disclosure of net operating revenue [line items]
Gross revenues	1,414,067
PIS/Pasep and Cofins
ICMS (VAT)
Sectorial charges
Service tax (ISSQN)
Net operating revenues	1,414,067
Construction income [member] | Restated [Member]
Disclosure of net operating revenue [line items]
Gross revenues		1,132,884	1,097,313
Net operating revenues		1,132,884	1,097,313
Fair value of assets from the indemnity for the concession [member]
Disclosure of net operating revenue [line items]
Gross revenues	57,341
PIS/Pasep and Cofins
ICMS (VAT)
Sectorial charges
Service tax (ISSQN)
Net operating revenues	57,341
Fair value of assets from the indemnity for the concession [member] | Restated [Member]
Disclosure of net operating revenue [line items]
Gross revenues		36,646	47,499
Net operating revenues		36,646	47,499
Distribution of piped gas [member]
Disclosure of net operating revenue [line items]
Gross revenues	679,304
PIS/Pasep and Cofins	(60,774)
ICMS (VAT)	(115,640)
Sectorial charges
Service tax (ISSQN)	(235)
Net operating revenues	502,655
Distribution of piped gas [member] | Restated [Member]
Disclosure of net operating revenue [line items]
Gross revenues		1,003,790	753,222
Net operating revenues		843,183	557,186
Sectorial financial assets and liabilities result [member]
Disclosure of net operating revenue [line items]
Gross revenues	746,052
PIS/Pasep and Cofins	(69,113)
ICMS (VAT)
Sectorial charges
Service tax (ISSQN)
Net operating revenues	676,939
Sectorial financial assets and liabilities result [member] | Restated [Member]
Disclosure of net operating revenue [line items]
Gross revenues		25,057	985,344
Net operating revenues		18,631	893,688
Other operating revenue [member]
Disclosure of net operating revenue [line items]
Gross revenues	406,539
PIS/Pasep and Cofins	(35,771)
ICMS (VAT)	(65)
Sectorial charges
Service tax (ISSQN)	(4,269)
Net operating revenues	366,434
Other operating revenue [member] | Restated [Member]
Disclosure of net operating revenue [line items]
Gross revenues		438,876	199,788
Net operating revenues		407,248	171,218
Recovery of pis/pasep and cofins on ICMS [member]
Disclosure of net operating revenue [line items]
Gross revenues
PIS/Pasep and Cofins	810,563
ICMS (VAT)
Sectorial charges
Service tax (ISSQN)
Net operating revenues	R$ 810563
Recovery of pis/pasep and cofins on ICMS [member] | Restated [Member]
Disclosure of net operating revenue [line items]
Net operating revenues

31 Net Operating Revenue (Det_2

31 Net Operating Revenue (Details 1) - BRL (R$) R$ in Thousands		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disclosure of net operating revenue [line items]
Gross operating revenues		R$ 25939794
PIS/Pasep and Cofins		(1,227,978)
Recovery of Pis/Pasep and Cofins on ICMS		(1,755,112)
ICMS (VAT)		(4,216,720)
Service tax (ISSQN)		(4,504)
Regulatory charges		(1,857,343)	R$ 2161811	R$ 2457562
Net operating revenues		18,633,249
Restated [Member]
Disclosure of net operating revenue [line items]
Gross operating revenues			24,691,379	23,190,729
PIS/Pasep and Cofins			(2,243,383)	(2,094,148)
Recovery of Pis/Pasep and Cofins on ICMS			(105,184)
ICMS (VAT)			(4,518,791)	(4,085,153)
Service tax (ISSQN)			(3,333)	(3,402)
Regulatory charges			(2,161,811)	(2,457,562)
Net operating revenues			15,869,245	14,550,464
Electricity sales to final customers [member]
Disclosure of net operating revenue [line items]
Gross operating revenues		9,524,897
PIS/Pasep and Cofins		(737,647)
ICMS (VAT)		(1,960,998)
Service tax (ISSQN)
Regulatory charges		(173,428)
Net operating revenues		6,652,824
Electricity sales to final customers [member] | Residential [member]
Disclosure of net operating revenue [line items]
Gross operating revenues		3,098,969
Electricity sales to final customers [member] | Industrial [member]
Disclosure of net operating revenue [line items]
Gross operating revenues		970,638
Electricity sales to final customers [member] | Trade, services and other activities [member]
Disclosure of net operating revenue [line items]
Gross operating revenues		1,701,260
Electricity sales to final customers [member] | Rural [member]
Disclosure of net operating revenue [line items]
Gross operating revenues		613,419
Electricity sales to final customers [member] | Public entities [member]
Disclosure of net operating revenue [line items]
Gross operating revenues		195,259
Electricity sales to final customers [member] | Public lighting [member]
Disclosure of net operating revenue [line items]
Gross operating revenues		233,558
Electricity sales to final customers [member] | Public service [member]
Disclosure of net operating revenue [line items]
Gross operating revenues		290,482
Electricity sales to final customers [member] | Free consumers [member]
Disclosure of net operating revenue [line items]
Gross operating revenues		1,729,603
Electricity sales to final customers [member] | Donations and grants [member]
Disclosure of net operating revenue [line items]
Gross operating revenues		691,709
Electricity sales to final customers [member] | Restated [Member]
Disclosure of net operating revenue [line items]
Gross operating revenues			10,481,794	10,104,045
Net operating revenues			6,426,016	5,548,584
Electricity sales to final customers [member] | Restated [Member] | Residential [member]
Disclosure of net operating revenue [line items]
Gross operating revenues			3,336,432	3,175,290
Electricity sales to final customers [member] | Restated [Member] | Industrial [member]
Disclosure of net operating revenue [line items]
Gross operating revenues			1,276,105	1,419,240
Electricity sales to final customers [member] | Restated [Member] | Trade, services and other activities [member]
Disclosure of net operating revenue [line items]
Gross operating revenues			2,179,510	2,136,087
Electricity sales to final customers [member] | Restated [Member] | Rural [member]
Disclosure of net operating revenue [line items]
Gross operating revenues			631,527	572,361
Electricity sales to final customers [member] | Restated [Member] | Public entities [member]
Disclosure of net operating revenue [line items]
Gross operating revenues			279,495	262,705
Electricity sales to final customers [member] | Restated [Member] | Public lighting [member]
Disclosure of net operating revenue [line items]
Gross operating revenues			274,250	278,645
Electricity sales to final customers [member] | Restated [Member] | Public service [member]
Disclosure of net operating revenue [line items]
Gross operating revenues			332,414	316,307
Electricity sales to final customers [member] | Restated [Member] | Free consumers [member]
Disclosure of net operating revenue [line items]
Gross operating revenues			1,431,274	1,179,314
Electricity sales to final customers [member] | Restated [Member] | Donations and grants [member]
Disclosure of net operating revenue [line items]
Gross operating revenues			740,787	764,096
Electricity sales to distributors [member]
Disclosure of net operating revenue [line items]
Gross operating revenues		4,330,982
PIS/Pasep and Cofins		(467,817)
ICMS (VAT)		(21,637)
Service tax (ISSQN)
Regulatory charges		(61,698)
Net operating revenues		3,779,830
Electricity sales to distributors [member] | Bilateral contracts [member]
Disclosure of net operating revenue [line items]
Gross operating revenues		2,386,929
Electricity sales to distributors [member] | Regulated contracts [member]
Disclosure of net operating revenue [line items]
Gross operating revenues		916,377
Electricity sales to distributors [member] | Electric energy trade chamber CCEE [member]
Disclosure of net operating revenue [line items]
Gross operating revenues		933,369
Electricity sales to distributors [member] | Interest [member]
Disclosure of net operating revenue [line items]
Gross operating revenues		94,307
Electricity sales to distributors [member] | Restated [Member]
Disclosure of net operating revenue [line items]
Gross operating revenues			3,301,336	3,136,244
Net operating revenues			2,865,866	2,765,916
Electricity sales to distributors [member] | Restated [Member] | Bilateral contracts [member]
Disclosure of net operating revenue [line items]
Gross operating revenues			1,998,617	2,002,077
Electricity sales to distributors [member] | Restated [Member] | Regulated contracts [member]
Disclosure of net operating revenue [line items]
Gross operating revenues			854,239	385,157
Electricity sales to distributors [member] | Restated [Member] | Electric energy trade chamber CCEE [member]
Disclosure of net operating revenue [line items]
Gross operating revenues			357,076	663,024
Electricity sales to distributors [member] | Restated [Member] | Interest [member]
Disclosure of net operating revenue [line items]
Gross operating revenues			91,404	85,986
Use of the main distribution and transmission grid [member]
Disclosure of net operating revenue [line items]
Gross operating revenues		8,780,612
PIS/Pasep and Cofins		(667,419)
ICMS (VAT)		(2,118,380)
Service tax (ISSQN)
Regulatory charges		(1,622,217)
Net operating revenues		4,372,596
Use of the main distribution and transmission grid [member] | Residential [member]
Disclosure of net operating revenue [line items]
Gross operating revenues		2,788,725
Use of the main distribution and transmission grid [member] | Industrial [member]
Disclosure of net operating revenue [line items]
Gross operating revenues		1,273,320
Use of the main distribution and transmission grid [member] | Trade, services and other activities [member]
Disclosure of net operating revenue [line items]
Gross operating revenues		1,628,098
Use of the main distribution and transmission grid [member] | Rural [member]
Disclosure of net operating revenue [line items]
Gross operating revenues		548,682
Use of the main distribution and transmission grid [member] | Public entities [member]
Disclosure of net operating revenue [line items]
Gross operating revenues		180,814
Use of the main distribution and transmission grid [member] | Public lighting [member]
Disclosure of net operating revenue [line items]
Gross operating revenues		205,904
Use of the main distribution and transmission grid [member] | Public service [member]
Disclosure of net operating revenue [line items]
Gross operating revenues		195,597
Use of the main distribution and transmission grid [member] | Free consumers [member]
Disclosure of net operating revenue [line items]
Gross operating revenues		1,164,020
Use of the main distribution and transmission grid [member] | Concessionaires and generators [member]
Disclosure of net operating revenue [line items]
Gross operating revenues		61,720
Use of the main distribution and transmission grid [member] | Operating and maintenance income - O&M and interest income [member]
Disclosure of net operating revenue [line items]
Gross operating revenues		733,732
Use of the main distribution and transmission grid [member] | Restated [Member]
Disclosure of net operating revenue [line items]
Gross operating revenues			8,270,996	6,867,274
Net operating revenues			4,138,771	3,469,060
Use of the main distribution and transmission grid [member] | Restated [Member] | Residential [member]
Disclosure of net operating revenue [line items]
Gross operating revenues			2,585,892	2,222,621
Use of the main distribution and transmission grid [member] | Restated [Member] | Industrial [member]
Disclosure of net operating revenue [line items]
Gross operating revenues			1,280,168	1,110,089
Use of the main distribution and transmission grid [member] | Restated [Member] | Trade, services and other activities [member]
Disclosure of net operating revenue [line items]
Gross operating revenues			1,713,632	1,407,156
Use of the main distribution and transmission grid [member] | Restated [Member] | Rural [member]
Disclosure of net operating revenue [line items]
Gross operating revenues			467,044	362,778
Use of the main distribution and transmission grid [member] | Restated [Member] | Public entities [member]
Disclosure of net operating revenue [line items]
Gross operating revenues			217,027	185,383
Use of the main distribution and transmission grid [member] | Restated [Member] | Public lighting [member]
Disclosure of net operating revenue [line items]
Gross operating revenues			206,492	184,530
Use of the main distribution and transmission grid [member] | Restated [Member] | Public service [member]
Disclosure of net operating revenue [line items]
Gross operating revenues			174,414	141,556
Use of the main distribution and transmission grid [member] | Restated [Member] | Free consumers [member]
Disclosure of net operating revenue [line items]
Gross operating revenues			1,052,535	795,105
Use of the main distribution and transmission grid [member] | Restated [Member] | Concessionaires and generators [member]
Disclosure of net operating revenue [line items]
Gross operating revenues			62,414	80,329
Use of the main distribution and transmission grid [member] | Restated [Member] | Operating and maintenance income - O&M and interest income [member]
Disclosure of net operating revenue [line items]
Gross operating revenues			511,378	377,727
Construction income [member]
Disclosure of net operating revenue [line items]
Gross operating revenues		1,414,067
PIS/Pasep and Cofins
ICMS (VAT)
Service tax (ISSQN)
Regulatory charges
Net operating revenues		1,414,067
Construction income [member] | Power distribution service concession [member]
Disclosure of net operating revenue [line items]
Gross operating revenues		1,154,488
Construction income [member] | Power gas distribution service concession [member]
Disclosure of net operating revenue [line items]
Gross operating revenues		7,438
Construction income [member] | Power Transmission Concession [member]
Disclosure of net operating revenue [line items]
Gross operating revenues	[1]	252,141
Construction income [member] | Restated [Member]
Disclosure of net operating revenue [line items]
Gross operating revenues			1,132,884	1,097,313
Net operating revenues			1,132,884	1,097,313
Construction income [member] | Restated [Member] | Power distribution service concession [member]
Disclosure of net operating revenue [line items]
Gross operating revenues			904,023	741,855
Construction income [member] | Restated [Member] | Power gas distribution service concession [member]
Disclosure of net operating revenue [line items]
Gross operating revenues			12,153	13,478
Construction income [member] | Restated [Member] | Power Transmission Concession [member]
Disclosure of net operating revenue [line items]
Gross operating revenues	[1]		216,708	341,980
Fair value of assets from the indemnity for the concession [member]
Disclosure of net operating revenue [line items]
Gross operating revenues		57,341
PIS/Pasep and Cofins
ICMS (VAT)
Service tax (ISSQN)
Regulatory charges
Net operating revenues		57,341
Fair value of assets from the indemnity for the concession [member] | Restated [Member]
Disclosure of net operating revenue [line items]
Gross operating revenues			36,646	47,499
Net operating revenues			36,646	47,499
Distribution of piped gas [member]
Disclosure of net operating revenue [line items]
Gross operating revenues		679,304
PIS/Pasep and Cofins		(60,774)
ICMS (VAT)		(115,640)
Service tax (ISSQN)		(235)
Regulatory charges
Net operating revenues		502,655
Distribution of piped gas [member] | Restated [Member]
Disclosure of net operating revenue [line items]
Gross operating revenues			1,003,790	753,222
Net operating revenues			843,183	557,186
Sectorial financial assets and liabilities result [member]
Disclosure of net operating revenue [line items]
Gross operating revenues		746,052
PIS/Pasep and Cofins		(69,113)
ICMS (VAT)
Service tax (ISSQN)
Regulatory charges
Net operating revenues		676,939
Sectorial financial assets and liabilities result [member] | Restated [Member]
Disclosure of net operating revenue [line items]
Gross operating revenues			25,057	985,344
Net operating revenues			18,631	893,688
Other operating revenue [member]
Disclosure of net operating revenue [line items]
Gross operating revenues		406,539
PIS/Pasep and Cofins		(35,771)
ICMS (VAT)		(65)
Service tax (ISSQN)		(4,269)
Regulatory charges
Net operating revenues		366,434
Other operating revenue [member] | Leasing and rent [member]
Disclosure of net operating revenue [line items]
Gross operating revenues		176,452
Other operating revenue [member] | Fair value in the purchase and sale of power in the active market [member]
Disclosure of net operating revenue [line items]
Gross operating revenues		137,463
Other operating revenue [member] | Income from rendering of services [member]
Disclosure of net operating revenue [line items]
Gross operating revenues		44,182
Other operating revenue [member] | Other income [member]
Disclosure of net operating revenue [line items]
Gross operating revenues		R$ 48442
Other operating revenue [member] | Restated [Member]
Disclosure of net operating revenue [line items]
Gross operating revenues			438,876	199,788
Net operating revenues			407,248	171,218
Other operating revenue [member] | Restated [Member] | Leasing and rent [member]
Disclosure of net operating revenue [line items]
Gross operating revenues			141,315	130,007
Other operating revenue [member] | Restated [Member] | Fair value in the purchase and sale of power in the active market [member]
Disclosure of net operating revenue [line items]
Gross operating revenues			204,876
Other operating revenue [member] | Restated [Member] | Income from rendering of services [member]
Disclosure of net operating revenue [line items]
Gross operating revenues			51,780	39,705
Other operating revenue [member] | Restated [Member] | Other income [member]
Disclosure of net operating revenue [line items]
Gross operating revenues			R$ 40905	R$ 30076
[1]	The balance contains the amount of construction revenue, the construction margin and the efficiency gain or loss as detailed in Note 11.3

31 Net Operating Revenue (Det_3

31 Net Operating Revenue (Details 2) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disclosure of net operating revenue [line items]
Lease and rental revenue	R$ 176452
Restated [Member]
Disclosure of net operating revenue [line items]
Lease and rental revenue		R$ 141315	R$ 130007
Equipment and framework [member]
Disclosure of net operating revenue [line items]
Lease and rental revenue	175,673
Equipment and framework [member] | Restated [Member]
Disclosure of net operating revenue [line items]
Lease and rental revenue		140,053	128,734
Facilities sharing [member]
Disclosure of net operating revenue [line items]
Lease and rental revenue	415
Facilities sharing [member] | Restated [Member]
Disclosure of net operating revenue [line items]
Lease and rental revenue		1,046	1,003
Real estate [member]
Disclosure of net operating revenue [line items]
Lease and rental revenue	R$ 364
Real estate [member] | Restated [Member]
Disclosure of net operating revenue [line items]
Lease and rental revenue		R$ 216	R$ 270

31 Net Operating Revenue (Det_4

31 Net Operating Revenue (Details 3) R$ in Thousands	Dec. 31, 2020BRL (R$)
Disclosure of net operating revenue [line items]
Facilities sharing	R$ 26512
Less than one year [member]
Disclosure of net operating revenue [line items]
Facilities sharing	1,410
1 to 5 Years [member]
Disclosure of net operating revenue [line items]
Facilities sharing	5,640
Over 5 Years [member]
Disclosure of net operating revenue [line items]
Facilities sharing	R$ 19462

31 Net Operating Revenue (Det_5

31 Net Operating Revenue (Details 4) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disclosure of net operating revenue [line items]
Regulatory charges	R$ 1857343	R$ 2161811	R$ 2457562
Energy development account CDE energia [member]
Disclosure of net operating revenue [line items]
Regulatory charges	1,530,998	1,654,157	1,840,283
Other charges - rate flags [member]
Disclosure of net operating revenue [line items]
Regulatory charges	81,159	280,286	423,098
Research and development and energy efficiency - R&D and EEP [member]
Disclosure of net operating revenue [line items]
Regulatory charges	144,474	127,432	123,306
Global reversion reserve - RGR quota [member]
Disclosure of net operating revenue [line items]
Regulatory charges	62,057	63,918	48,512
Energy development account - "CDE uso" [member]
Disclosure of net operating revenue [line items]
Regulatory charges	27,315	25,271	12,211
Inspection fee [member]
Disclosure of net operating revenue [line items]
Regulatory charges	R$ 11340	R$ 10747	R$ 10152

31 Net Operating Revenue (Det_6

31 Net Operating Revenue (Details 5) - National electric energy agency [member] - Energy development account CDE energia [member] - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disclosure of net operating revenue [line items]
Regulatory charges	R$ 1530998	R$ 1654157	R$ 1840283
CDE USO [member]
Disclosure of net operating revenue [line items]
Regulatory charges	R$ 1530998	R$ 1266152	R$ 1040045
CDE USO [member] | Resolution no. 2,510/2018 [member]
Disclosure of net operating revenue [line items]
Resolutions		Resolution No. 2,510/2018
Period		January to June
Regulatory charges		R$ 1269498
CDE USO [member] | Preliminary injunctions [member]
Disclosure of net operating revenue [line items]
Resolutions	(-) Preliminary injunctions	(-) Preliminary injunctions	(-) Preliminary injunctions
Period	January to December	January to June	January to December
Regulatory charges	R$ 715	R$ 3346	R$ 2
CDE USO [member] | Resolution No. 2,368/2018 [member]
Disclosure of net operating revenue [line items]
Resolutions			Resolution No. 2,368/2018
Period			January to August
Regulatory charges			R$ 594972
CDE USO [member] | Resolution No. 2,446/2018 [member]
Disclosure of net operating revenue [line items]
Resolutions			Resolution No. 2,446/2018
Period			September to December
Regulatory charges			R$ 445075
CDE USO [member] | Resolution no. 2,664/2019 [member]
Disclosure of net operating revenue [line items]
Resolutions	Resolution No. 2,664/2019
Period	January to December
Regulatory charges	R$ 1531713
CONTA ACR [member]
Disclosure of net operating revenue [line items]
Regulatory charges		R$ 348177	R$ 557981
CONTA ACR [member] | Resolution mo. 2,231/2017 [member]
Disclosure of net operating revenue [line items]
Resolutions		Resolution No.  2,231/2017	Resolution No. 2,231/2017
Period		January to February	January to December
Regulatory charges		R$ 98725	R$ 557981
CONTA ACR [member] | Resolution no. 2,521/2019 [member]
Disclosure of net operating revenue [line items]
Resolutions		Resolution No. 2,521/2019
Period		March to August
Regulatory charges		R$ 296174
CONTA ACR [member] | Return - order no. 2,755 / 2019 [member]
Disclosure of net operating revenue [line items]
Resolutions		Return - Order No. 2,755 / 2019
Regulatory charges		R$ 46722
CDE ENERGIA [member]
Disclosure of net operating revenue [line items]
Regulatory charges		R$ 39828	R$ 242257
CDE ENERGIA [member] | Resolution no. 2,510/2018 [member]
Disclosure of net operating revenue [line items]
Resolutions		Resolution No. 2,510/2018
Period		January to March
Regulatory charges		R$ 41431
CDE ENERGIA [member] | Preliminary injunctions [member]
Disclosure of net operating revenue [line items]
Resolutions		(-) Preliminary injunctions	(-) Preliminary injunctions
Period		January to March	January to December
Regulatory charges		R$ 1603	R$ 3442
CDE ENERGIA [member] | Resolution No. 2,202/2017 [member]
Disclosure of net operating revenue [line items]
Resolutions			Resolution No. 2,202/2017
Period			January to May
Regulatory charges			R$ 100692
CDE ENERGIA [member] | Resolution No. 2,358/2017 [member]
Disclosure of net operating revenue [line items]
Resolutions			Resolution No. 2,358/2017
Period			June to December
Regulatory charges			R$ 145007

31 Net Operating Revenue (Det_7

31 Net Operating Revenue (Details Narrative) - BRL (R$) R$ in Thousands	Jul. 31, 2020	Dec. 31, 2020
Disclosure of net operating revenue [line items]
Residential		0.95%
Commerce and services		0.83%
Public lighting		0.93%
High voltage consumers percentage		1.13%
Funds received	R$ 536359
Updating portion B [member]
Disclosure of net operating revenue [line items]
Annual tariff review and authorized average rate		0.79%
Adjusting portion A [member]
Disclosure of net operating revenue [line items]
Annual tariff review and authorized average rate		7.82%
Financial components [member]
Disclosure of net operating revenue [line items]
Annual tariff review and authorized average rate		1.81%
Withdrawal of the financial components from the previous tariff process [member]
Disclosure of net operating revenue [line items]
Annual tariff review and authorized average rate		(10.01%)

32 Operating Costs and Expens_3

32 Operating Costs and Expenses (Details) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disclosure of operating costs and expenses [line items]
Operating costs and expenses	R$ 13347822		R$ 11372908
Selling expenses	(159,825)
General and administrative expenses	(809,408)
Other operating expenses, net	(256,475)
Total operating costs and expenses	(14,573,530)
Restated [Member]
Disclosure of operating costs and expenses [line items]
Operating costs and expenses		R$ 11464148	(11,372,908)
Selling expenses		(175,772)	(105,414)
General and administrative expenses		(711,289)	(706,844)
Other operating expenses, net		(322,506)	(250,004)
Total operating costs and expenses		(12,673,717)	(12,435,170)
Electricity purchased for resale [member]
Disclosure of operating costs and expenses [line items]
Operating costs and expenses	(6,829,530)
Selling expenses
General and administrative expenses
Other operating expenses, net
Total operating costs and expenses	(6,829,530)
Electricity purchased for resale [member] | Restated [Member]
Disclosure of operating costs and expenses [line items]
Operating costs and expenses		(6,105,274)	(6,361,178)
Selling expenses
General and administrative expenses
Other operating expenses, net
Total operating costs and expenses		(6,105,274)	(6,361,178)
Charge of the main distribution and transmission grid [member]
Disclosure of operating costs and expenses [line items]
Operating costs and expenses	(1,525,567)
Selling expenses
General and administrative expenses
Other operating expenses, net
Total operating costs and expenses	(1,525,567)
Charge of the main distribution and transmission grid [member] | Restated [Member]
Disclosure of operating costs and expenses [line items]
Operating costs and expenses		(1,249,275)	(1,176,780)
Selling expenses
General and administrative expenses
Other operating expenses, net
Total operating costs and expenses		(1,249,275)	(1,176,780)
Personnel and management [member]
Disclosure of operating costs and expenses [line items]
Operating costs and expenses	(1,143,323)
Selling expenses	(12,567)
General and administrative expenses	(446,005)
Other operating expenses, net
Total operating costs and expenses	(1,601,895)
Personnel and management [member] | Restated [Member]
Disclosure of operating costs and expenses [line items]
Operating costs and expenses		(945,312)	(978,878)
Selling expenses		13,937	(18,460)
General and administrative expenses		(366,133)	(360,447)
Other operating expenses, net
Total operating costs and expenses		(1,325,382)	(1,357,785)
Pension and healthcare plans [member]
Disclosure of operating costs and expenses [line items]
Operating costs and expenses	(161,257)
Selling expenses	(1,615)
General and administrative expenses	(65,762)
Other operating expenses, net
Total operating costs and expenses	(228,634)
Pension and healthcare plans [member] | Restated [Member]
Disclosure of operating costs and expenses [line items]
Operating costs and expenses		(169,476)	(176,102)
Selling expenses		(1,914)	(2,447)
General and administrative expenses		(66,936)	(65,201)
Other operating expenses, net
Total operating costs and expenses		(238,326)	(243,750)
Materials and supplies for power electricity [member]
Disclosure of operating costs and expenses [line items]
Operating costs and expenses	(404,496)	(49,352)
Selling expenses
General and administrative expenses
Other operating expenses, net
Total operating costs and expenses	(404,496)	(49,352)
Materials and supplies for power electricity [member] | Restated [Member]
Disclosure of operating costs and expenses [line items]
Operating costs and expenses			(19,729)
Selling expenses
General and administrative expenses
Other operating expenses, net
Total operating costs and expenses			(19,729)
Natural gas and supplies for gas business [member]
Disclosure of operating costs and expenses [line items]
Operating costs and expenses	(354,701)
Selling expenses
General and administrative expenses
Other operating expenses, net
Total operating costs and expenses	(354,701)
Natural gas and supplies for gas business [member] | Restated [Member]
Disclosure of operating costs and expenses [line items]
Operating costs and expenses		(585,233)	(412,618)
Selling expenses
General and administrative expenses
Other operating expenses, net
Total operating costs and expenses		(585,233)	(412,618)
Third-party services [member]
Disclosure of operating costs and expenses [line items]
Operating costs and expenses	(406,109)
Selling expenses	(4,913)
General and administrative expenses	(147,019)
Other operating expenses, net
Total operating costs and expenses	(558,041)
Third-party services [member] | Restated [Member]
Disclosure of operating costs and expenses [line items]
Operating costs and expenses		(371,835)	(325,091)
Selling expenses		(7,711)	(7,607)
General and administrative expenses		(146,462)	(148,403)
Other operating expenses, net
Total operating costs and expenses		(526,008)	(481,101)
Depreciation and amortization [member]
Disclosure of operating costs and expenses [line items]
Operating costs and expenses	(945,595)
Selling expenses
General and administrative expenses	(48,963)
Other operating expenses, net	(15,355)
Total operating costs and expenses	(1,009,913)
Depreciation and amortization [member] | Restated [Member]
Disclosure of operating costs and expenses [line items]
Operating costs and expenses		(892,813)	(657,445)
Selling expenses		(3)	(5)
General and administrative expenses		(43,190)	(25,268)
Other operating expenses, net		(14,720)	(13,574)
Total operating costs and expenses		(950,726)	(696,292)
Credit losses provisions and reversals [member]
Disclosure of operating costs and expenses [line items]
Operating costs and expenses	40,143
Selling expenses	(128,466)
General and administrative expenses
Other operating expenses, net	(148,971)
Total operating costs and expenses	(237,294)
Credit losses provisions and reversals [member] | Restated [Member]
Disclosure of operating costs and expenses [line items]
Operating costs and expenses		(120,689)	(18,920)
Selling expenses		(140,348)	(69,187)
General and administrative expenses
Other operating expenses, net		(240,392)	(230,837)
Total operating costs and expenses		(260,051)	(281,104)
Construction cost [member]
Disclosure of operating costs and expenses [line items]
Operating costs and expenses	(1,417,504)
Selling expenses
General and administrative expenses
Other operating expenses, net
Total operating costs and expenses	(1,417,504)
Construction cost [member] | Restated [Member]
Disclosure of operating costs and expenses [line items]
Operating costs and expenses		(1,091,396)	(1,052,208)
Selling expenses
General and administrative expenses
Other operating expenses, net
Total operating costs and expenses		(1,091,396)	(1,052,208)
Other operating costs and expenses net [member]
Disclosure of operating costs and expenses [line items]
Operating costs and expenses	(134,526)
Selling expenses	(12,169)
General and administrative expenses	(94,431)
Other operating expenses, net	(92,149)
Total operating costs and expenses	(333,275)
Other operating costs and expenses net [member] | Restated [Member]
Disclosure of operating costs and expenses [line items]
Operating costs and expenses		(50,800)	(164,305)
Selling expenses		(11,606)	(7,095)
General and administrative expenses		(82,695)	(95,638)
Other operating expenses, net		(67,394)	(5,593)
Total operating costs and expenses		(212,495)	(272,631)
Materials And Supplies [member]
Disclosure of operating costs and expenses [line items]
Operating costs and expenses	(65,357)
Selling expenses	(95)
General and administrative expenses	(7,228)
Other operating expenses, net
Total operating costs and expenses	R$ 72680
Materials And Supplies [member] | Restated [Member]
Disclosure of operating costs and expenses [line items]
Operating costs and expenses		(74,071)	(67,494)
Selling expenses		(253)	(613)
General and administrative expenses		(5,873)	(11,887)
Other operating expenses, net
Total operating costs and expenses		R$ 80197	R$ 79994

32 Operating Costs and Expens_4

32 Operating Costs and Expenses (Details 1) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disclosure of operating costs and expenses [line items]
Electricity purchased for resale	R$ 6829530	R$ 6105274	R$ 6361178
Purchase of energy in the regulated environment - CCEAR [member]
Disclosure of operating costs and expenses [line items]
Electricity purchased for resale	3,107,956	2,880,115	2,599,345
Itaipu binacional [member]
Disclosure of operating costs and expenses [line items]
Electricity purchased for resale	1,766,058	1,316,524	1,850,021
Electric energy trade chamber - CCEE [member]
Disclosure of operating costs and expenses [line items]
Electricity purchased for resale	1,176,798	1,405,497	1,272,177
Bilateral contracts [member]
Disclosure of operating costs and expenses [line items]
Electricity purchased for resale	1,087,439	754,070	928,741
Program for incentive to alternative energy sources - Proinfa [member]
Disclosure of operating costs and expenses [line items]
Electricity purchased for resale	221,406	268,063	228,295
Micro and mini generators and repurchase of customers [member]
Disclosure of operating costs and expenses [line items]
Electricity purchased for resale	161,324	52,871	12,373
PIS/pasep/cofins taxes on electricity purchased for resale [member]
Disclosure of operating costs and expenses [line items]
Electricity purchased for resale	R$ 691451	R$ 571866	R$ 529774

32 Operating Costs and Expens_5

32 Operating Costs and Expenses (Details 2) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disclosure of operating costs and expenses [line items]
Personnel and management	R$ 1601895	R$ 1325382	R$ 1357785
Provisions for performance and profit sharing [member]
Disclosure of operating costs and expenses [line items]
Personnel and management	481,681	155,544	91,526
Personnel [member]
Disclosure of operating costs and expenses [line items]
Personnel and management	1,098,279	1,143,978	1,238,891
Personnel [member] | Salaries and management fees [member]
Disclosure of operating costs and expenses [line items]
Personnel and management	696,837	746,415	794,966
Personnel [member] | Social charges on payroll [member]
Disclosure of operating costs and expenses [line items]
Personnel and management	227,485	241,025	261,459
Personnel [member] | Meal and education allowance [member]
Disclosure of operating costs and expenses [line items]
Personnel and management	107,052	113,021	113,177
Personnel [member] | Voluntary retirement program [member]
Disclosure of operating costs and expenses [line items]
Personnel and management	66,905	43,517	69,289
Management [member]
Disclosure of operating costs and expenses [line items]
Personnel and management	21,935	25,860	27,368
Management [member] | Salaries and management fees [member]
Disclosure of operating costs and expenses [line items]
Personnel and management	18,465	19,867	21,422
Management [member] | Social charges on payroll [member]
Disclosure of operating costs and expenses [line items]
Personnel and management	3,233	5,745	5,695
Management [member] | Other expenses [member]
Disclosure of operating costs and expenses [line items]
Personnel and management	R$ 237	R$ 248	R$ 251

32 Operating Costs and Expens_6

32 Operating Costs and Expenses (Details 3) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disclosure of operating costs and expenses [line items]
Third-party services expense	R$ 558041
Restated [Member]
Disclosure of operating costs and expenses [line items]
Third-party services expense		R$ 526008	R$ 481101
Maintenance of electrical system [member]
Disclosure of operating costs and expenses [line items]
Third-party services expense	206,688
Maintenance of electrical system [member] | Restated [Member]
Disclosure of operating costs and expenses [line items]
Third-party services expense		164,510	144,163
Maintenance of facilities [member]
Disclosure of operating costs and expenses [line items]
Third-party services expense	97,889
Maintenance of facilities [member] | Restated [Member]
Disclosure of operating costs and expenses [line items]
Third-party services expense		102,295	88,186
Consumer service [member]
Disclosure of operating costs and expenses [line items]
Third-party services expense	54,713
Consumer service [member] | Restated [Member]
Disclosure of operating costs and expenses [line items]
Third-party services expense		35,548	15,470
Meter reading and bill delivery [member]
Disclosure of operating costs and expenses [line items]
Third-party services expense	48,895
Meter reading and bill delivery [member] | Restated [Member]
Disclosure of operating costs and expenses [line items]
Third-party services expense		45,515	43,968
Communication processing and transmission of data [member]
Disclosure of operating costs and expenses [line items]
Third-party services expense	42,244
Communication processing and transmission of data [member] | Restated [Member]
Disclosure of operating costs and expenses [line items]
Third-party services expense		51,919	47,954
Consulting and audit [member]
Disclosure of operating costs and expenses [line items]
Third-party services expense	41,043
Consulting and audit [member] | Restated [Member]
Disclosure of operating costs and expenses [line items]
Third-party services expense		20,456	40,694
Other services [member]
Disclosure of operating costs and expenses [line items]
Third-party services expense	R$ 66569
Other services [member] | Restated [Member]
Disclosure of operating costs and expenses [line items]
Third-party services expense		R$ 105765	R$ 100666

32 Operating Costs and Expens_7

32 Operating Costs and Expenses (Details 4) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disclosure of operating costs and expenses [line items]
Credit losses, provisions and reversals	R$ 237294
Restated [Member]
Disclosure of operating costs and expenses [line items]
Credit losses, provisions and reversals		R$ 260051	R$ 281104
Provision for litigations [member]
Disclosure of operating costs and expenses [line items]
Credit losses, provisions and reversals	150,269
Provision for litigations [member] | Restated [Member]
Disclosure of operating costs and expenses [line items]
Credit losses, provisions and reversals		243,848	206,792
Power generation concession contract [member]
Disclosure of operating costs and expenses [line items]
Credit losses, provisions and reversals	(10,502)
Power generation concession contract [member] | Restated [Member]
Disclosure of operating costs and expenses [line items]
Credit losses, provisions and reversals		(2,945)	(4,758)
Property plant and equipment generation segment [member]
Disclosure of operating costs and expenses [line items]
Credit losses, provisions and reversals	(37,609)
Property plant and equipment generation segment [member] | Restated [Member]
Disclosure of operating costs and expenses [line items]
Credit losses, provisions and reversals		(117,744)	(14,162)
Expected credit losses (trade accounts and other receivables) [member]
Disclosure of operating costs and expenses [line items]
Credit losses, provisions and reversals	128,466
Expected credit losses (trade accounts and other receivables) [member] | Restated [Member]
Disclosure of operating costs and expenses [line items]
Credit losses, provisions and reversals		140,348	83,453
Tax credits estimated losses [member]
Disclosure of operating costs and expenses [line items]
Credit losses, provisions and reversals	(1,298)
Tax credits estimated losses [member] | Restated [Member]
Disclosure of operating costs and expenses [line items]
Credit losses, provisions and reversals		(3,456)	9,779
Provision for losses on equity interests [member]
Disclosure of operating costs and expenses [line items]
Credit losses, provisions and reversals	R$ 7968
Provision for losses on equity interests [member] | Restated [Member]
Disclosure of operating costs and expenses [line items]
Credit losses, provisions and reversals

32 Operating Costs and Expens_8

32 Operating Costs and Expenses (Details 5) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disclosure of operating costs and expenses [line items]
Construction cost	R$ 1417504	R$ 1091396	R$ 1052208
Materials And Supplies [member]
Disclosure of operating costs and expenses [line items]
Construction cost	781,807	548,336	507,899
Third-party services [member]
Disclosure of operating costs and expenses [line items]
Construction cost	460,952	395,607	400,680
Personnel [member]
Disclosure of operating costs and expenses [line items]
Construction cost	140,108	125,777	124,469
Others [member]
Disclosure of operating costs and expenses [line items]
Construction cost	R$ 34637	R$ 21676	R$ 19160

32 Operating Costs and Expens_9

32 Operating Costs and Expenses (Details 6) - BRL (R$) R$ in Thousands		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disclosure of operating costs and expenses [line items]
Other operating costs and expenses, net		R$ 333275
Restated [Member]
Disclosure of operating costs and expenses [line items]
Other operating costs and expenses, net			R$ 212495	R$ 272631
Financial offset for the use of water resources [member]
Disclosure of operating costs and expenses [line items]
Other operating costs and expenses, net		63,841
Financial offset for the use of water resources [member] | Restated [Member]
Disclosure of operating costs and expenses [line items]
Other operating costs and expenses, net			103,737	105,310
Collection charge [member]
Disclosure of operating costs and expenses [line items]
Other operating costs and expenses, net		49,903
Collection charge [member] | Restated [Member]
Disclosure of operating costs and expenses [line items]
Other operating costs and expenses, net			51,156	44,682
Net losses in the decommissioning and disposal of assets [member]
Disclosure of operating costs and expenses [line items]
Other operating costs and expenses, net		44,020
Net losses in the decommissioning and disposal of assets [member] | Restated [Member]
Disclosure of operating costs and expenses [line items]
Other operating costs and expenses, net			38,151	70,640
Compensation [member]
Disclosure of operating costs and expenses [line items]
Other operating costs and expenses, net		38,423
Compensation [member] | Restated [Member]
Disclosure of operating costs and expenses [line items]
Other operating costs and expenses, net			63,628	31,045
Taxes [member]
Disclosure of operating costs and expenses [line items]
Other operating costs and expenses, net		37,847
Taxes [member] | Restated [Member]
Disclosure of operating costs and expenses [line items]
Other operating costs and expenses, net			28,651	78,323
Donations, contributions, grants, tax incentives [member]
Disclosure of operating costs and expenses [line items]
Other operating costs and expenses, net	[1]	22,136
Donations, contributions, grants, tax incentives [member] | Restated [Member]
Disclosure of operating costs and expenses [line items]
Other operating costs and expenses, net	[1]		12,829	12,314
Leasing and rent [member]
Disclosure of operating costs and expenses [line items]
Other operating costs and expenses, net		9,705
Leasing and rent [member] | Restated [Member]
Disclosure of operating costs and expenses [line items]
Other operating costs and expenses, net			8,536	34,226
Associacao das emissoras de radiodifusao do parana - AERP [member]
Disclosure of operating costs and expenses [line items]
Other operating costs and expenses, net		11,455
Associacao das emissoras de radiodifusao do parana - AERP [member] | Restated [Member]
Disclosure of operating costs and expenses [line items]
Other operating costs and expenses, net			10,862	10,753
Publicity [member]
Disclosure of operating costs and expenses [line items]
Other operating costs and expenses, net		9,598
Publicity [member] | Restated [Member]
Disclosure of operating costs and expenses [line items]
Other operating costs and expenses, net			7,206	6,127
Talento olimpico paranaens - TOP [member]
Disclosure of operating costs and expenses [line items]
Other operating costs and expenses, net		4,750
Talento olimpico paranaens - TOP [member] | Restated [Member]
Disclosure of operating costs and expenses [line items]
Other operating costs and expenses, net			4,719	4,537
Sponsorship [member]
Disclosure of operating costs and expenses [line items]
Other operating costs and expenses, net		1,126
Sponsorship [member] | Restated [Member]
Disclosure of operating costs and expenses [line items]
Other operating costs and expenses, net			2,460	2,685
Other net income, costs and expenses [member]
Disclosure of operating costs and expenses [line items]
Other operating costs and expenses, net	[2]	R$ 40471
Other net income, costs and expenses [member] | Restated [Member]
Disclosure of operating costs and expenses [line items]
Other operating costs and expenses, net	[2]		R$ 119440	R$ 128011
[1]	The balance includes the Company's social investments in education, culture, health, sports, among others, including incentive donations used as a tax benefit.
[2]	The 2019 balance includes R$ 97,664 of water rate reversal (TCFRH).

32 Operating Costs and Expen_10

32 Operating Costs and Expenses (Details Narrative) R$ in Thousands	12 Months Ended
	Dec. 31, 2019BRL (R$)
Wind farms of the brisa complex [member]
Disclosure of operating costs and expenses [line items]
Revenue related to the reimbursement	R$ 97664

33 Financial Results (Details)

33 Financial Results (Details) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
DisclosureOfFinancialResultsLineItems [Line Items]
Financial income	R$ 1839668
Financial expenses	973,397
Financial result, net	866,271
Restated [Member]
DisclosureOfFinancialResultsLineItems [Line Items]
Financial income		R$ 729506	R$ 797107
Financial expenses		1,184,870	1,210,252
Financial result, net		(455,364)	(413,145)
Recognition Of Tax Credit [member]
DisclosureOfFinancialResultsLineItems [Line Items]
Financial income	944,549
Recognition Of Tax Credit [member] | Restated [Member]
DisclosureOfFinancialResultsLineItems [Line Items]
Financial income		38,434	55,096
Interest And Monetary Variation Of CRC Transfer Expense [member]
DisclosureOfFinancialResultsLineItems [Line Items]
Financial income	341,964
Interest And Monetary Variation Of CRC Transfer Expense [member] | Restated [Member]
DisclosureOfFinancialResultsLineItems [Line Items]
Financial income		192,724	214,627
Arrears Charges On Bills [member]
DisclosureOfFinancialResultsLineItems [Line Items]
Financial income	271,966
Arrears Charges On Bills [member] | Restated [Member]
DisclosureOfFinancialResultsLineItems [Line Items]
Financial income		215,522	210,466
Return On Financial Investments [member]
DisclosureOfFinancialResultsLineItems [Line Items]
Financial income	80,704
Return On Financial Investments [member] | Restated [Member]
DisclosureOfFinancialResultsLineItems [Line Items]
Financial income		119,622	98,424
Exchange variation on loan collateral [member]
DisclosureOfFinancialResultsLineItems [Line Items]
Financial income	35,089
Exchange variation on loan collateral [member] | Restated [Member]
DisclosureOfFinancialResultsLineItems [Line Items]
Financial income
Derivatives fair value - forward contract [member]
DisclosureOfFinancialResultsLineItems [Line Items]
Financial income	24,511
Derivatives fair value - forward contract [member] | Restated [Member]
DisclosureOfFinancialResultsLineItems [Line Items]
Financial income
Remuneration Of Net Sectorial Assets And Liabilities Expense [member]
DisclosureOfFinancialResultsLineItems [Line Items]
Financial income	20,168
Remuneration Of Net Sectorial Assets And Liabilities Expense [member] | Restated [Member]
DisclosureOfFinancialResultsLineItems [Line Items]
Financial income		47,378	43,966
Monetary Variation Over The Ltaipu Power Purchase [member]
DisclosureOfFinancialResultsLineItems [Line Items]
Financial income	42,729
Monetary Variation Over The Ltaipu Power Purchase [member] | Restated [Member]
DisclosureOfFinancialResultsLineItems [Line Items]
Financial income		26,332	24,658
Monetary Variation And Adjust To Present Value Of Accounts Payable Related To The Concession [member]
DisclosureOfFinancialResultsLineItems [Line Items]
Financial income	2,322
Monetary Variation And Adjust To Present Value Of Accounts Payable Related To The Concession [member] | Restated [Member]
DisclosureOfFinancialResultsLineItems [Line Items]
Financial income		1,462	1,047
Other Financial Income [member]
DisclosureOfFinancialResultsLineItems [Line Items]
Financial income	75,666
Other Financial Income [member] | Restated [Member]
DisclosureOfFinancialResultsLineItems [Line Items]
Financial income		88,032	148,823
Monetary And Exchange Variation And Debt Charges [member]
DisclosureOfFinancialResultsLineItems [Line Items]
Financial expenses	607,569
Monetary And Exchange Variation And Debt Charges [member] | Restated [Member]
DisclosureOfFinancialResultsLineItems [Line Items]
Financial expenses		853,880	829,728
Monetary Variation And Adjust To Present Value Of Accounts Payable Related To The Concession Expense [member]r
DisclosureOfFinancialResultsLineItems [Line Items]
Financial expenses	192,848
Monetary Variation And Adjust To Present Value Of Accounts Payable Related To The Concession Expense [member]r | Restated [Member]
DisclosureOfFinancialResultsLineItems [Line Items]
Financial expenses		100,455	94,319
Monetary Variation Over The Itaipu Power Purchase Expense [member]
DisclosureOfFinancialResultsLineItems [Line Items]
Financial expenses	75,478
Monetary Variation Over The Itaipu Power Purchase Expense [member] | Restated [Member]
DisclosureOfFinancialResultsLineItems [Line Items]
Financial expenses		29,547	50,203
Interest on R&D and EEP [member]
DisclosureOfFinancialResultsLineItems [Line Items]
Financial expenses	12,550
Interest on R&D and EEP [member] | Restated [Member]
DisclosureOfFinancialResultsLineItems [Line Items]
Financial expenses		24,570	25,407
Remuneration Of Net Sectorial Assets And Liabilities [member]
DisclosureOfFinancialResultsLineItems [Line Items]
Financial expenses	62
Remuneration Of Net Sectorial Assets And Liabilities [member] | Restated [Member]
DisclosureOfFinancialResultsLineItems [Line Items]
Financial expenses		5,753	23,747
Interest And Monetary Variation Of CRC Transfer [member]
DisclosureOfFinancialResultsLineItems [Line Items]
Financial expenses
Interest And Monetary Variation Of CRC Transfer [member] | Restated [Member]
DisclosureOfFinancialResultsLineItems [Line Items]
Financial expenses		8,495	25,830
PIS/Pasep/Cofins Taxes On Interest On Capital [member]
DisclosureOfFinancialResultsLineItems [Line Items]
Financial expenses	27,748
PIS/Pasep/Cofins Taxes On Interest On Capital [member] | Restated [Member]
DisclosureOfFinancialResultsLineItems [Line Items]
Financial expenses		71,549	13,636
Other Financial Expenses [member]
DisclosureOfFinancialResultsLineItems [Line Items]
Financial expenses	R$ 57142
Other Financial Expenses [member] | Restated [Member]
DisclosureOfFinancialResultsLineItems [Line Items]
Financial expenses		R$ 90621	R$ 147382

34 Operating Segments (Details)

34 Operating Segments (Details) - BRL (R$) R$ in Thousands	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disclosure of operating segments [line items]
ASSETS	R$ 46784664
CURRENT ASSETS	11,407,431
Noncurrent assets	35,377,233
Long term assets	16,090,279	R$ 10862630
Investments	2,729,517	2,523,179	R$ 2368234
Property, plant and equipment	9,495,460	10,592,103
Intangible assets	6,929,456	6,332,611
Right-of-use asset	132,521	92,831
Electric energy GET [member]
Disclosure of operating segments [line items]
ASSETS	20,945,910	19,457,551
CURRENT ASSETS	3,137,219	2,039,443
Noncurrent assets	17,808,691	17,418,108
Long term assets	5,561,545	5,054,560
Investments	2,574,402	2,371,374
Property, plant and equipment	9,420,859	9,735,093
Intangible assets	223,222	233,973
Right-of-use asset	28,663	23,108
Electric energy DIS [member]
Disclosure of operating segments [line items]
ASSETS	20,407,088	13,434,522
CURRENT ASSETS	6,198,414	4,631,991
Noncurrent assets	14,208,674	8,802,531
Long term assets	7,915,662	3,051,058
Investments	808	813
Property, plant and equipment
Intangible assets	6,203,387	5,703,686
Right-of-use asset	88,817	46,974
Electric energy Com [member]
Disclosure of operating segments [line items]
ASSETS	1,053,099	690,372
CURRENT ASSETS	390,695	229,630
Noncurrent assets	662,404	460,742
Long term assets	660,229	460,312
Investments		247
Property, plant and equipment	224	53
Intangible assets	1,833	123
Right-of-use asset	118	7
TEL [member]
Disclosure of operating segments [line items]
ASSETS	1,565,593	1,527,098
CURRENT ASSETS	666,654	528,754
Noncurrent assets	898,939	998,344
Long term assets	136,527	137,770
Investments
Property, plant and equipment	734,172	833,974
Intangible assets	16,993	19,844
Right-of-use asset	11,247	6,756
GAS [member]
Disclosure of operating segments [line items]
ASSETS	749,434	904,993
CURRENT ASSETS	245,028	313,896
Noncurrent assets	504,406	591,097
Long term assets	358,719	576,190
Investments
Property, plant and equipment
Intangible assets	132,366
Right-of-use asset	13,321	14,907
HOL [member]
Disclosure of operating segments [line items]
ASSETS	4,733,847	3,183,677
CURRENT ASSETS	2,543,995	1,127,469
Noncurrent assets	2,189,852	2,056,208
Long term assets	2,007,064	1,879,619
Investments	154,307	150,746
Property, plant and equipment	24,500	22,983
Intangible assets	2,379	1,781
Right-of-use asset	1,602	1,079
Reclassifications note 40 [member]
Disclosure of operating segments [line items]
ASSETS	(1,230,546)
CURRENT ASSETS	(380,954)
Noncurrent assets	(849,592)
Long term assets	(110,834)
Investments
Property, plant and equipment	(716,924)
Intangible assets	(10,587)
Right-of-use asset	(11,247)
Intersegment operations [member]
Disclosure of operating segments [line items]
ASSETS	(1,439,761)	(885,662)
CURRENT ASSETS	(1,393,620)	(961,987)
Noncurrent assets	(46,141)	76,325
Long term assets	(438,633)	(296,879)
Investments
Property, plant and equipment	32,629
Intangible assets	359,863	373,204
Right-of-use asset

34 Operating Segments (Details

34 Operating Segments (Details 1) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disclosure of operating segments [line items]
NET OPERATING REVENUE	R$ 18633249
Net operating revenues - third-parties	18,633,249
Net operating revenues - between segments
OPERATING COSTS AND EXPENSES	(14,573,530)
Energy purchased for resale	(6,829,530)
Charges for use of the main transmission grid	(1,525,567)
Personnel and management	(1,601,895)
Pension and healthcare plans	(228,634)
Materials and supplies	(72,680)
Raw materials and supplies for generation	(404,496)
Natural gas and supplies for gas business	(354,701)
Third party services	(558,041)
Depreciation and amortization	(1,009,913)
Provision (reversal) for litigations	(150,269)
Impairment of assets	48,111
Other estimated losses, provisions and reversals	(135,136)
Construction cost	(1,417,504)
Other operating costs and expenses, net	(256,475)
EQUITY IN EARNINGS OF INVESTEES	193,547
PROFIT (LOSS) BEFORE FINANCIAL
Operating profit	5,119,537
Financial income	1,839,668
Financial expenses	(973,397)
OPERATING PROFIT (LOSS)	(1,032,161)
Income tax and social contribution	(1,285,365)
Net income from continuing operations	3,834,172
Result of discontinued operations	75,578
Net income	3,909,750
Restated [Member]
Disclosure of operating segments [line items]
NET OPERATING REVENUE		R$ 15869246	R$ 14550464
Net operating revenues - third-parties		15,869,246	14,550,464
Net operating revenues - between segments
OPERATING COSTS AND EXPENSES		(12,673,717)	(12,435,170)
Energy purchased for resale		(6,105,274)	(6,361,178)
Charges for use of the main transmission grid		(1,249,275)	(1,176,780)
Personnel and management		(1,325,382)	(1,357,785)
Pension and healthcare plans		(238,326)	(243,750)
Materials and supplies		(80,197)	(79,994)
Raw materials and supplies for generation		(49,352)	(19,729)
Natural gas and supplies for gas business		(585,233)	(412,618)
Third party services		(526,008)	(481,101)
Depreciation and amortization		(950,728)	696,292
Provision (reversal) for litigations		(243,849)	(206,792)
Impairment of assets		120,689	18,920
Other estimated losses, provisions and reversals		(136,892)	(93,232)
Construction cost		(1,091,396)	(1,052,208)
Other operating costs and expenses, net		(212,494)	(272,631)
EQUITY IN EARNINGS OF INVESTEES		106,757	135,888
PROFIT (LOSS) BEFORE FINANCIAL
Operating profit		3,302,286	2,251,182
Financial income		729,506	797,107
Financial expenses		(1,184,870)	(1,210,252)
OPERATING PROFIT (LOSS)		2,846,922	1,838,037
Income tax and social contribution		(675,660)	471,166
Net income from continuing operations		2,171,262	1,366,871
Result of discontinued operations		(108,393)	77,133
Net income		2,062,869	1,444,004
Electricity GET GER [member]
Disclosure of operating segments [line items]
NET OPERATING REVENUE	4,030,979	3,368,375	3,007,565
Net operating revenues - third-parties	2,599,807	2,233,367	2,116,875
Net operating revenues - between segments	1,431,172	1,135,008	890,690
OPERATING COSTS AND EXPENSES	(2,348,409)	(1,659,225)	(1,619,431)
Energy purchased for resale	(260,650)	(262,288)	(417,918)
Charges for use of the main transmission grid	(489,921)	(451,107)	(408,347)
Personnel and management	(277,905)	(217,792)	(214,855)
Pension and healthcare plans	(38,196)	(37,955)	(36,379)
Materials and supplies	(9,695)	(10,987)	(11,637)
Raw materials and supplies for generation	(415,405)	(50,388)	(25,367)
Natural gas and supplies for gas business
Third party services	(118,562)	(108,309)	(119,668)
Depreciation and amortization	(583,958)	(551,576)	(353,916)
Provision (reversal) for litigations	(53,216)	(45,212)	18,059
Impairment of assets	48,111	117,648	22,312
Other estimated losses, provisions and reversals	(5,930)	43,207	55,457
Construction cost
Other operating costs and expenses, net	(143,082)	(84,466)	(127,172)
EQUITY IN EARNINGS OF INVESTEES	9,629	14,840	5,514
PROFIT (LOSS) BEFORE FINANCIAL
Operating profit	1,692,199	1,723,990	1,393,648
Financial income	121,129	80,632	119,196
Financial expenses	(408,795)	(457,528)	(517,832)
OPERATING PROFIT (LOSS)	1,404,533	1,347,094	995,012
Income tax and social contribution	(337,564)	(289,831)	(327,598)
Net income from continuing operations	1,066,969	1,057,263	667,414
Result of discontinued operations
Net income	1,066,969	1,057,263	667,414
Electricity GET TRA [member]
Disclosure of operating segments [line items]
NET OPERATING REVENUE	1,186,215	871,510	904,826
Net operating revenues - third-parties	875,240	643,596	680,567
Net operating revenues - between segments	310,975	227,914	224,259
OPERATING COSTS AND EXPENSES	(536,968)	(479,538)	(561,850)
Energy purchased for resale
Charges for use of the main transmission grid
Personnel and management	(168,828)	(139,662)	(147,139)
Pension and healthcare plans	(23,972)	(25,027)	(25,884)
Materials and supplies	(3,466)	(3,766)	(5,054)
Raw materials and supplies for generation
Natural gas and supplies for gas business
Third party services	(24,863)	(38,092)	(33,489)
Depreciation and amortization	11,812	(12,987)	(11,386)
Provision (reversal) for litigations	(24,529)	(24,398)	7,879
Impairment of assets
Other estimated losses, provisions and reversals	(4,149)	(41,350)	(49,486)
Construction cost	(255,578)	(175,220)	(277,259)
Other operating costs and expenses, net	(19,771)	(19,036)	(20,032)
EQUITY IN EARNINGS OF INVESTEES	176,848	85,752	123,676
PROFIT (LOSS) BEFORE FINANCIAL
Operating profit	826,095	477,724	466,652
Financial income	21,977	20,637	29,163
Financial expenses	(97,417)	(138,947)	(136,455)
OPERATING PROFIT (LOSS)	750,655	359,414	359,360
Income tax and social contribution	(149,962)	(54,695)	(75,361)
Net income from continuing operations	600,693	304,719	283,999
Result of discontinued operations
Net income	600,693	304,719	283,999
Electric energy DIS [member]
Disclosure of operating segments [line items]
NET OPERATING REVENUE	12,363,459	10,401,301	9,972,442
Net operating revenues - third-parties	12,312,047	10,352,690	9,932,267
Net operating revenues - between segments	51,412	48,611	40,175
OPERATING COSTS AND EXPENSES	(10,674,981)	(9,579,915)	(9,474,473)
Energy purchased for resale	(5,856,372)	(5,424,207)	(5,577,719)
Charges for use of the main transmission grid	(1,370,814)	(1,044,135)	(1,012,062)
Personnel and management	(994,037)	(822,772)	(837,728)
Pension and healthcare plans	(146,422)	(155,784)	(159,842)
Materials and supplies	(58,196)	(64,419)	(60,379)
Raw materials and supplies for generation
Natural gas and supplies for gas business
Third party services	(405,854)	(397,390)	(339,399)
Depreciation and amortization	(374,851)	(343,597)	(301,581)
Provision (reversal) for litigations	(55,118)	(164,705)	(222,057)
Impairment of assets
Other estimated losses, provisions and reversals	(123,980)	(137,680)	(77,985)
Construction cost	(1,154,488)	(904,023)	(741,855)
Other operating costs and expenses, net	(134,849)	(121,203)	(143,866)
EQUITY IN EARNINGS OF INVESTEES
PROFIT (LOSS) BEFORE FINANCIAL
Operating profit	1,688,478	821,386	497,969
Financial income	1,334,983	355,152	335,377
Financial expenses	(291,002)	(273,909)	(308,319)
OPERATING PROFIT (LOSS)	2,732,459	902,629	525,027
Income tax and social contribution	(878,278)	(201,236)	(148,244)
Net income from continuing operations	1,854,181	701,393	376,783
Result of discontinued operations
Net income	1,854,181	701,393	376,783
Electric energy Com [member]
Disclosure of operating segments [line items]
NET OPERATING REVENUE	2,420,657	1,810,901	1,341,162
Net operating revenues - third-parties	2,323,825	1,773,765	1,341,162
Net operating revenues - between segments	96,832	37,136
OPERATING COSTS AND EXPENSES	(2,262,053)	(1,608,245)	(1,354,578)
Energy purchased for resale	(2,239,388)	(1,590,272)	(1,338,473)
Charges for use of the main transmission grid
Personnel and management	(15,007)	(13,041)	(13,734)
Pension and healthcare plans	(1,493)	(1,481)	(1,507)
Materials and supplies	(28)	(15)	(65)
Raw materials and supplies for generation
Natural gas and supplies for gas business
Third party services	(1,493)	(1,718)	(1,700)
Depreciation and amortization	(75)	(44)	(16)
Provision (reversal) for litigations	(62)	(156)	9
Impairment of assets
Other estimated losses, provisions and reversals	(839)	(4)	(935)
Construction cost
Other operating costs and expenses, net	(3,668)	(1,514)	1,843
EQUITY IN EARNINGS OF INVESTEES	(93)	(280)	(15)
PROFIT (LOSS) BEFORE FINANCIAL
Operating profit	158,511	202,376	(13,431)
Financial income	11,469	3,004	6,065
Financial expenses	(96)	(220)	(104)
OPERATING PROFIT (LOSS)	169,884	205,160	(7,470)
Income tax and social contribution	(57,947)	(69,854)	2,632
Net income from continuing operations	111,937	135,306	(4,838)
Result of discontinued operations
Net income	111,937	135,306	(4,838)
TEL [member]
Disclosure of operating segments [line items]
NET OPERATING REVENUE	386,634	418,030	421,408
Net operating revenues - third-parties	355,845	375,030	364,741
Net operating revenues - between segments	30,789	43,000	56,667
OPERATING COSTS AND EXPENSES	(363,673)	(604,616)	(369,201)
Energy purchased for resale
Charges for use of the main transmission grid
Personnel and management	(82,817)	(73,890)	(92,472)
Pension and healthcare plans	(11,207)	(11,384)	(13,892)
Materials and supplies	(1,364)	(1,955)	(1,763)
Raw materials and supplies for generation
Natural gas and supplies for gas business
Third party services	(66,426)	(87,113)	(91,127)
Depreciation and amortization	(147,190)	(152,863)	(58,209)
Provision (reversal) for litigations	336	(14,072)	(12,844)
Impairment of assets	54,945
Other estimated losses, provisions and reversals	(18,088)	(100,691)	(12,749)
Construction cost
Other operating costs and expenses, net	(91,862)	(162,648)	(86,145)
EQUITY IN EARNINGS OF INVESTEES
PROFIT (LOSS) BEFORE FINANCIAL
Operating profit	22,961	(186,586)	52,207
Financial income	24,968	20,760	16,808
Financial expenses	(58,317)	(53,857)	41,713
OPERATING PROFIT (LOSS)	(10,388)	(219,683)	27,302
Income tax and social contribution	2,357	68,644	(2,853)
Net income from continuing operations	(8,031)	(151,039)	24,449
Result of discontinued operations
Net income	(8,031)	(151,039)	24,449
GAS [member]
Disclosure of operating segments [line items]
NET OPERATING REVENUE	535,206	866,884	588,532
Net operating revenues - third-parties	522,328	865,826	582,895
Net operating revenues - between segments	12,878	1,058	5,637
OPERATING COSTS AND EXPENSES	(452,495)	(662,306)	(515,594)
Energy purchased for resale
Charges for use of the main transmission grid
Personnel and management	(35,998)	(36,932)	(34,896)
Pension and healthcare plans	(4,663)	(4,122)	(3,881)
Materials and supplies	(580)	(217)	(2,110)
Raw materials and supplies for generation
Natural gas and supplies for gas business	(354,701)	(585,233)	(412,618)
Third party services	(11,633)	(12,971)	(17,034)
Depreciation and amortization	31,452	(30,480)	(22,759)
Provision (reversal) for litigations	(85)	(292)	(154)
Impairment of assets
Other estimated losses, provisions and reversals	(238)	(1,063)	(6,017)
Construction cost	(7,438)	(12,153)	(13,478)
Other operating costs and expenses, net	(5,707)	21,157	(2,647)
EQUITY IN EARNINGS OF INVESTEES
PROFIT (LOSS) BEFORE FINANCIAL
Operating profit	82,711	204,578	72,938
Financial income	13,599	53,625	29,454
Financial expenses	(14,363)	(10,439)	(31,865)
OPERATING PROFIT (LOSS)	81,947	247,764	70,527
Income tax and social contribution	(22,967)	(74,791)	(10,909)
Net income from continuing operations	58,980	172,973	59,618
Result of discontinued operations
Net income	58,980	172,973	59,618
HOL [member]
Disclosure of operating segments [line items]
NET OPERATING REVENUE
Net operating revenues - third-parties
Net operating revenues - between segments
OPERATING COSTS AND EXPENSES	(107,059)	(59,232)	(57,993)
Energy purchased for resale
Charges for use of the main transmission grid
Personnel and management	(27,303)	(21,293)	(16,961)
Pension and healthcare plans	(2,681)	(2,573)	(2,365)
Materials and supplies	(715)	(793)	(749)
Raw materials and supplies for generation
Natural gas and supplies for gas business
Third party services	(32,025)	(16,734)	(32,311)
Depreciation and amortization	(2,345)	(2,289)	(1,312)
Provision (reversal) for litigations	(17,259)	(9,086)	(10,528)
Impairment of assets		3,041	1,648
Other estimated losses, provisions and reversals		(2)	(14,266)
Construction cost
Other operating costs and expenses, net	(24,731)	(9,503)	18,851
EQUITY IN EARNINGS OF INVESTEES	7,163	6,445	6,713
PROFIT (LOSS) BEFORE FINANCIAL
Operating profit	(99,896)	(52,787)	(51,280)
Financial income	340,404	217,057	305,344
Financial expenses	(165,647)	(304,453)	(243,169)
OPERATING PROFIT (LOSS)	74,861	(140,183)	10,895
Income tax and social contribution	125,293	(17,563)	41,957
Net income from continuing operations	200,154	(157,746)	52,852
Result of discontinued operations
Net income	200,154	(157,746)	52,852
Reclassifications note 40 [member]
Disclosure of operating segments [line items]
NET OPERATING REVENUE	(355,843)	(375,028)	(384,316)
Net operating revenues - third-parties	(355,843)	(375,028)	(384,316)
Net operating revenues - between segments
OPERATING COSTS AND EXPENSES	203,779	486,633	241,451
Energy purchased for resale
Charges for use of the main transmission grid
Personnel and management
Pension and healthcare plans
Materials and supplies	1,364	1,955	1,763
Raw materials and supplies for generation
Natural gas and supplies for gas business
Third party services	66,426	87,113	91,127
Depreciation and amortization	107,497	143,108	52,887
Provision (reversal) for litigations	(336)	14,072	12,844
Impairment of assets	(54,945)
Other estimated losses, provisions and reversals	18,088	100,691	12,749
Construction cost
Other operating costs and expenses, net	65,685	139,694	70,081
EQUITY IN EARNINGS OF INVESTEES
PROFIT (LOSS) BEFORE FINANCIAL
Operating profit	(152,064)	111,605	(142,865)
Financial income	(24,939)	(20,735)	(16,808)
Financial expenses	58,317	53,857	41,713
OPERATING PROFIT (LOSS)	(118,686)	144,727	(117,960)
Income tax and social contribution	43,108	(36,334)	40,827
Net income from continuing operations	(75,578)	108,393	(77,133)
Result of discontinued operations	75,578	(108,393)	77,133
Net income
Intersegment operations [member]
Disclosure of operating segments [line items]
NET OPERATING REVENUE	(1,934,058)	(1,492,727)	(1,301,155)
Net operating revenues - third-parties			(83,727)
Net operating revenues - between segments	(1,934,058)	(1,492,727)	(1,217,428)
OPERATING COSTS AND EXPENSES	1,968,329	1,492,727	1,276,499
Energy purchased for resale	1,526,880	1,171,493	972,932
Charges for use of the main transmission grid	335,168	245,967	243,629
Personnel and management
Pension and healthcare plans
Materials and supplies
Raw materials and supplies for generation	10,909	1,036	5,638
Natural gas and supplies for gas business
Third party services	36,389	49,206	62,500
Depreciation and amortization	(34,273)
Provision (reversal) for litigations
Impairment of assets			(5,040)
Other estimated losses, provisions and reversals
Construction cost			(19,616)
Other operating costs and expenses, net	24,710	25,025	16,456
EQUITY IN EARNINGS OF INVESTEES
PROFIT (LOSS) BEFORE FINANCIAL
Operating profit	34,271		(24,656)
Financial income	(3,922)	(626)	(27,492)
Financial expenses	3,923	626	27,492
OPERATING PROFIT (LOSS)	34,272		(24,656)
Income tax and social contribution	(9,405)		8,383
Net income from continuing operations	24,867		(16,273)
Result of discontinued operations
Net income	R$ 24867		R$ 16273

34 Operating Segments (Detail_2

34 Operating Segments (Details 2) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disclosure of operating segments [line items]
Contract Assets	R$ 1293765	R$ 935167	R$ 813450
Property, plant and equipment	366,298	582,259	1,469,480
Intangible assets	10,991	5,032	7,589
Right-of-use asset	103,571	127,375
IFRS 16 Initial adoption		118,022
Additions for the period		9,353
Electric energy GET [member]
Disclosure of operating segments [line items]
Contract Assets
Property, plant and equipment	236,914	522,744	1,160,967
Intangible assets	7,397	4,272	6,351
Right-of-use asset	19,231	33,461
IFRS 16 Initial adoption		32,919
Additions for the period		542
Electric energy DIS [member]
Disclosure of operating segments [line items]
Contract Assets	1,278,578	917,577	797,832
Property, plant and equipment
Intangible assets
Right-of-use asset	72,421	66,621
IFRS 16 Initial adoption		60,494
Additions for the period		6,127
Electric energy Com [member]
Disclosure of operating segments [line items]
Contract Assets
Property, plant and equipment	203	14	4
Intangible assets	1,741	3
Right-of-use asset	135	8
IFRS 16 Initial adoption
Additions for the period		8
TEL [member]
Disclosure of operating segments [line items]
Contract Assets
Property, plant and equipment	127,381	59,216	308,242
Intangible assets	808	486	1,235
Right-of-use asset	10,135	9,950
IFRS 16 Initial adoption		9,868
Additions for the period		82
GAS [member]
Disclosure of operating segments [line items]
Contract Assets	15,187	17,590	15,618
Property, plant and equipment
Intangible assets
Right-of-use asset	623	16,933
IFRS 16 Initial adoption		14,356
Additions for the period		2,577
HOL [member]
Disclosure of operating segments [line items]
Contract Assets
Property, plant and equipment	1,800	285	267
Intangible assets	1,045	271	R$ 3
Right-of-use asset	R$ 1026	402
IFRS 16 Initial adoption		385
Additions for the period		R$ 17

35 Financial Instruments (Detai

35 Financial Instruments (Details) - BRL (R$) R$ in Thousands		Dec. 31, 2020	Dec. 31, 2019
Disclosure of detailed information about financial instruments [line items]
Total financial assets, book value		R$ 11853814	R$ 10696367
Total financial assets, fair value		12,029,028
Total financial liabilities, book value		18,139,625	15,065,586
Total financial liabilities, fair value		17,879,609
Restated [Member]
Disclosure of detailed information about financial instruments [line items]
Total financial assets, fair value			10,920,875
Total financial liabilities, fair value			15,026,969
Financial Liabilities at Amortised Cost [member]
Disclosure of detailed information about financial instruments [line items]
Total financial liabilities, book value		17,796,219	14,812,410
Total financial liabilities, fair value		17,536,203
Financial Liabilities at Amortised Cost [member] | Restated [Member]
Disclosure of detailed information about financial instruments [line items]
Total financial liabilities, fair value			14,773,793
Financial liabilities at fair value through profit or loss, category [member]
Disclosure of detailed information about financial instruments [line items]
Total financial liabilities, book value		343,406	253,176
Total financial liabilities, fair value		343,406
Financial liabilities at fair value through profit or loss, category [member] | Restated [Member]
Disclosure of detailed information about financial instruments [line items]
Total financial liabilities, fair value			253,176
Sectorial financial liabilities [member] | Financial Liabilities at Amortised Cost [member]
Disclosure of detailed information about financial instruments [line items]
Total financial liabilities, book value	[1]	188,709	102,284
Total financial liabilities, fair value	[1]	188,709
Sectorial financial liabilities [member] | Financial Liabilities at Amortised Cost [member] | Restated [Member]
Disclosure of detailed information about financial instruments [line items]
Total financial liabilities, fair value			102,284
Ordinary Financing of Taxes With The Federal Tax Authorities [member] | Financial Liabilities at Amortised Cost [member]
Disclosure of detailed information about financial instruments [line items]
Total financial liabilities, book value			18,063
Total financial liabilities, fair value
Ordinary Financing of Taxes With The Federal Tax Authorities [member] | Financial Liabilities at Amortised Cost [member] | Restated [Member]
Disclosure of detailed information about financial instruments [line items]
Total financial liabilities, fair value			18,001
Special Tax Regularization Program - Pert [member] | Financial Liabilities at Amortised Cost [member]
Disclosure of detailed information about financial instruments [line items]
Total financial liabilities, book value	[2]	459,303	497,207
Total financial liabilities, fair value	[2]	377,375
Special Tax Regularization Program - Pert [member] | Financial Liabilities at Amortised Cost [member] | Restated [Member]
Disclosure of detailed information about financial instruments [line items]
Total financial liabilities, fair value			439,519
PIS and Cofins to be refunded to consumers [member] | Financial Liabilities at Amortised Cost [member]
Disclosure of detailed information about financial instruments [line items]
Total financial liabilities, book value		3,927,823
Total financial liabilities, fair value		3,927,823
PIS and Cofins to be refunded to consumers [member] | Financial Liabilities at Amortised Cost [member] | Restated [Member]
Disclosure of detailed information about financial instruments [line items]
Total financial liabilities, fair value
Accounts payable to suppliers [member] | Financial Liabilities at Amortised Cost [member]
Disclosure of detailed information about financial instruments [line items]
Total financial liabilities, book value		2,436,452	1,873,193
Total financial liabilities, fair value		2,436,452
Accounts payable to suppliers [member] | Financial Liabilities at Amortised Cost [member] | Restated [Member]
Disclosure of detailed information about financial instruments [line items]
Total financial liabilities, fair value			1,873,193
Loans and Financing [member] | Financial Liabilities at Amortised Cost [member]
Disclosure of detailed information about financial instruments [line items]
Total financial liabilities, book value	[2]	3,214,249	3,168,710
Total financial liabilities, fair value	[2]	2,956,696
Loans and Financing [member] | Financial Liabilities at Amortised Cost [member] | Restated [Member]
Disclosure of detailed information about financial instruments [line items]
Total financial liabilities, fair value			3,110,104
Debentures [member] | Financial Liabilities at Amortised Cost [member]
Disclosure of detailed information about financial instruments [line items]
Total financial liabilities, book value	[3]	6,837,819	8,540,366
Total financial liabilities, fair value	[3]	6,837,819
Debentures [member] | Financial Liabilities at Amortised Cost [member] | Restated [Member]
Disclosure of detailed information about financial instruments [line items]
Total financial liabilities, fair value			8,540,366
Accounts payable related to concession [member] | Financial Liabilities at Amortised Cost [member]
Disclosure of detailed information about financial instruments [line items]
Total financial liabilities, book value	[4]	731,864	811,329
Total financial liabilities, fair value	[4]	811,329
Accounts payable related to concession [member] | Financial Liabilities at Amortised Cost [member] | Restated [Member]
Disclosure of detailed information about financial instruments [line items]
Total financial liabilities, fair value			690,326
Derivatives fair value - forward contracts [member] | Level 3 of fair value hierarchy [member] | Financial liabilities at fair value through profit or loss, category [member]
Disclosure of detailed information about financial instruments [line items]
Total financial liabilities, book value	[5]		1,203
Total financial liabilities, fair value	[5]
Derivatives fair value - forward contracts [member] | Level 3 of fair value hierarchy [member] | Financial liabilities at fair value through profit or loss, category [member] | Restated [Member]
Disclosure of detailed information about financial instruments [line items]
Total financial liabilities, fair value			1,203
Fair value in the purchase and sale of power [member] | Level 3 of fair value hierarchy [member] | Financial liabilities at fair value through profit or loss, category [member]
Disclosure of detailed information about financial instruments [line items]
Total financial liabilities, book value	[5]	343,406	251,973
Total financial liabilities, fair value	[5]	343,406
Fair value in the purchase and sale of power [member] | Level 3 of fair value hierarchy [member] | Financial liabilities at fair value through profit or loss, category [member] | Restated [Member]
Disclosure of detailed information about financial instruments [line items]
Total financial liabilities, fair value	[5]		251,973
Fair value through profit or loss [member]
Disclosure of detailed information about financial instruments [line items]
Total financial assets, book value		5,489,658	4,942,562
Total financial assets, fair value		5,489,658
Fair value through profit or loss [member] | Restated [Member]
Disclosure of detailed information about financial instruments [line items]
Total financial assets, fair value			4,942,562
Fair value through profit or loss [member] | Cash and cash equivalents [member] | Level 1 of fair value hierarchy [member]
Disclosure of detailed information about financial instruments [line items]
Total financial assets, book value	[1]	3,222,768	2,941,727
Total financial assets, fair value		3,222,768
Fair value through profit or loss [member] | Cash and cash equivalents [member] | Level 1 of fair value hierarchy [member] | Restated [Member]
Disclosure of detailed information about financial instruments [line items]
Total financial assets, fair value			2,941,727
Fair value through profit or loss [member] | Bonds and securities [member] | Level 1 of fair value hierarchy [member]
Disclosure of detailed information about financial instruments [line items]
Total financial assets, book value	[6]	751	2,429
Total financial assets, fair value	[6]	751
Fair value through profit or loss [member] | Bonds and securities [member] | Level 1 of fair value hierarchy [member] | Restated [Member]
Disclosure of detailed information about financial instruments [line items]
Total financial assets, fair value			2,429
Fair value through profit or loss [member] | Bonds and securities [member] | Level 2 of fair value hierarchy [member]
Disclosure of detailed information about financial instruments [line items]
Total financial assets, book value	[6]	299,779	279,652
Total financial assets, fair value	[6]	299,779
Fair value through profit or loss [member] | Bonds and securities [member] | Level 2 of fair value hierarchy [member] | Restated [Member]
Disclosure of detailed information about financial instruments [line items]
Total financial assets, fair value			279,652
Fair value through profit or loss [member] | Accounts receivable related to the distribution concession [member] | Level 3 of fair value hierarchy [member]
Disclosure of detailed information about financial instruments [line items]
Total financial assets, book value	[7]	1,149,934	1,161,203
Total financial assets, fair value	[7]	1,149,934
Fair value through profit or loss [member] | Accounts receivable related to the distribution concession [member] | Level 3 of fair value hierarchy [member] | Restated [Member]
Disclosure of detailed information about financial instruments [line items]
Total financial assets, fair value			1,161,203
Fair value through profit or loss [member] | Accounts receivable related to the generation concession [member] | Level 3 of fair value hierarchy [member]
Disclosure of detailed information about financial instruments [line items]
Total financial assets, book value	[8]	81,202	69,182
Total financial assets, fair value	[8]	81,202
Fair value through profit or loss [member] | Accounts receivable related to the generation concession [member] | Level 3 of fair value hierarchy [member] | Restated [Member]
Disclosure of detailed information about financial instruments [line items]
Total financial assets, fair value			69,182
Fair value through profit or loss [member] | Derivatives fair value - forward contracts [member] | Level 3 of fair value hierarchy [member]
Disclosure of detailed information about financial instruments [line items]
Total financial assets, book value	[5]	23,308
Total financial assets, fair value	[5]	23,308
Fair value through profit or loss [member] | Derivatives fair value - forward contracts [member] | Level 3 of fair value hierarchy [member] | Restated [Member]
Disclosure of detailed information about financial instruments [line items]
Total financial assets, fair value			1,203
Fair value through profit or loss [member] | Fair value in the purchase and sale of power in the active market [member] | Level 3 of fair value hierarchy [member]
Disclosure of detailed information about financial instruments [line items]
Total financial assets, book value	[5]	689,531	460,635
Total financial assets, fair value	[5]	689,531
Fair value through profit or loss [member] | Fair value in the purchase and sale of power in the active market [member] | Level 3 of fair value hierarchy [member] | Restated [Member]
Disclosure of detailed information about financial instruments [line items]
Total financial assets, fair value			460,635
Fair value through profit or loss [member] | Other temporary investments [member] | Level 1 of fair value hierarchy [member]
Disclosure of detailed information about financial instruments [line items]
Total financial assets, book value	[9]	14,910	15,566
Total financial assets, fair value	[9]	14,910
Fair value through profit or loss [member] | Other temporary investments [member] | Level 1 of fair value hierarchy [member] | Restated [Member]
Disclosure of detailed information about financial instruments [line items]
Total financial assets, fair value			15,566
Fair value through profit or loss [member] | Other Temporary Investments [member] | Level 2 of fair value hierarchy [member]
Disclosure of detailed information about financial instruments [line items]
Total financial assets, book value	[9]	7,475	12,168
Total financial assets, fair value	[9]	7,475
Fair value through profit or loss [member] | Other Temporary Investments [member] | Level 2 of fair value hierarchy [member] | Restated [Member]
Disclosure of detailed information about financial instruments [line items]
Total financial assets, fair value			12,168
Financial Assets at Amortised Cost [member]
Disclosure of detailed information about financial instruments [line items]
Total financial assets, book value		6,364,156	5,753,805
Total financial assets, fair value		6,539,370
Financial Assets at Amortised Cost [member] | Restated [Member]
Disclosure of detailed information about financial instruments [line items]
Total financial assets, fair value			5,978,313
Financial Assets at Amortised Cost [member] | Collaterals And Escrow Accounts [member]
Disclosure of detailed information about financial instruments [line items]
Total financial assets, book value	[1]	197	147
Total financial assets, fair value	[1]	197
Financial Assets at Amortised Cost [member] | Collaterals And Escrow Accounts [member] | Restated [Member]
Disclosure of detailed information about financial instruments [line items]
Total financial assets, fair value			147
Financial Assets at Amortised Cost [member] | Collaterals And Escrow Accounts [member]
Disclosure of detailed information about financial instruments [line items]
Total financial assets, book value		133,521	98,433	[2]
Total financial assets, fair value		113,477
Financial Assets at Amortised Cost [member] | Collaterals And Escrow Accounts [member] | Restated [Member]
Disclosure of detailed information about financial instruments [line items]
Total financial assets, fair value			94,671
Financial Assets at Amortised Cost [member] | Trade accounts receivable [member]
Disclosure of detailed information about financial instruments [line items]
Total financial assets, book value	[1]	3,819,680	3,182,567
Total financial assets, fair value	[1]	3,819,680
Financial Assets at Amortised Cost [member] | Trade accounts receivable [member] | Restated [Member]
Disclosure of detailed information about financial instruments [line items]
Total financial assets, fair value			3,182,567
Financial Assets at Amortised Cost [member] | CRC transferred to the parana state government [member]
Disclosure of detailed information about financial instruments [line items]
Total financial assets, book value	[10]	1,392,624	1,350,685
Total financial assets, fair value	[10]	1,496,016
Financial Assets at Amortised Cost [member] | CRC transferred to the parana state government [member] | Restated [Member]
Disclosure of detailed information about financial instruments [line items]
Total financial assets, fair value			1,488,456
Financial Assets at Amortised Cost [member] | Sectorial financial assets [member]
Disclosure of detailed information about financial instruments [line items]
Total financial assets, book value	[1]	346,930	473,989
Total financial assets, fair value	[1]	346,930
Financial Assets at Amortised Cost [member] | Sectorial financial assets [member] | Restated [Member]
Disclosure of detailed information about financial instruments [line items]
Total financial assets, fair value			473,989
Financial Assets at Amortised Cost [member] | Accounts receivable - concessions - bonus from the grant [member]
Disclosure of detailed information about financial instruments [line items]
Total financial assets, book value	[11]	671,204	647,984
Total financial assets, fair value	[11]	R$ 763070
Financial Assets at Amortised Cost [member] | Accounts receivable - concessions - bonus from the grant [member] | Restated [Member]
Disclosure of detailed information about financial instruments [line items]
Total financial assets, fair value			R$ 738483
[1]	Equivalent to their respective carrying values due to their nature and terms of realization.
[2]	The cost of the last borrowing taken out by the Company is used as a basic assumption IPCA + Spread de 4.8165%, for discount of the expected payment flows.
[3]	Calculated from the Unit Price quotation (PU) for December 31, 2020, obtained from the Brazilian Association of Financial and Capital Markets (ANBIMA), net of unamortized financial cost.
[4]	Actual net discount rate of 8.64% p.a., in line with the Company's estimated rate for long-term projects.
[5]	The fair values of assets and liabilities are equivalent to their carrying amounts according to Note 4.15 of these Financial Statements.
[6]	Fair value is calculated based on information made available by the financial agents and the market values of the bonds issued by the Brazilian government
[7]	The criteria are disclosed in Note 4.4 to the financial statements.
[8]	The fair values of generation assets approximate their carrying amounts, according to Note 4.4 of these Financial Statements.
[9]	Investments in other companies, stated at fair value, which is calculated according to the price quotations published in an active market, for assets classified as level 1 and determined in view of the comparative assessment model for assets classified as level 2.
[10]	The Company based its calculation on the comparison with a long-term and post-fixed National Treasury Bond (NTN-B) maturing on August 15, 2026, which yields approximately 3.09% p.a. plus the IPCA inflation index.
[11]	Receivables related to the concession agreement for providing electricity generation services under quota arrangements, having their fair value calculated by expected cash inflows, discounted at the rate established by ANEEL auction notice 12/2015 (9.04%).

35 Financial Instruments (Det_2

35 Financial Instruments (Details 1) - Credit risk [member] - BRL (R$) R$ in Thousands		Dec. 31, 2020	Dec. 31, 2019
Disclosure of detailed information about financial instruments [line items]
Exposure to credit risk		R$ 11140975	R$ 10235732
Cash and cash equivalents [member]
Disclosure of detailed information about financial instruments [line items]
Exposure to credit risk	[1]	3,222,768	2,941,727
Bonds and securities [member]
Disclosure of detailed information about financial instruments [line items]
Exposure to credit risk	[1]	300,530	282,081
Pledges and restricted deposits linked [member]
Disclosure of detailed information about financial instruments [line items]
Exposure to credit risk	[1]	133,718	98,580
Trade accounts receivable [member]
Disclosure of detailed information about financial instruments [line items]
Exposure to credit risk	[2]	3,819,680	3,182,567
CRC transferred to the parana state government [member]
Disclosure of detailed information about financial instruments [line items]
Exposure to credit risk	[3]	1,392,624	1,350,685
Sectorial financial assets [member]
Disclosure of detailed information about financial instruments [line items]
Exposure to credit risk	[4]	346,930	473,989
Accounts receivable - distribution concession [member]
Disclosure of detailed information about financial instruments [line items]
Exposure to credit risk	[5]	1,149,934	1,161,203
Accounts receivable - concessions - bonus from the grant [member]
Disclosure of detailed information about financial instruments [line items]
Exposure to credit risk	[6]	671,204	647,984
Accounts receivable - generation concessions [member]
Disclosure of detailed information about financial instruments [line items]
Exposure to credit risk	[7]	81,202	69,182
Other temporary investments [member]
Disclosure of detailed information about financial instruments [line items]
Exposure to credit risk	[8]	R$ 22385	R$ 27734
[1]	The Company manages the credit risk of its assets in accordance with the Management's policy of investing virtually all of its funds in federal banking institutions. As a result of legal and/or regulatory requirements, in exceptional circumstances the Company may invest funds in prime private banks.
[2]	The risk arises from the possibility that the Company might incur losses resulting from difficulties to receive its billings to customers. This risk is directly related to internal and external factors to Copel. To mitigate this type of risk, the Company manages its accounts receivable, detecting defaulting consumers, implementing specific collection policies and suspending the supply and/or recording of energy and the provision of service, as established in contract and regulatory standards
[3]	Management believes this credit risk is low because repayments are secured by resources from dividends.
[4]	Management considers the risk of this credit to be reduced, since the agreements signed guarantee the unconditional right to receive cash at the end of the concession to be paid by the Concession Grantor, corresponding to the costs not recovered through the tariff.
[5]	Management considers the risk of this credit to be reduced, since the agreements signed guarantee the unconditional right to receive cash at the end of the concession to be paid by the Concession Grantor, referring to investments in infrastructure not recovered through the tariff.
[6]	Management considers the credit risk reduced to the balance of RBSE assets, even in light of the injunctions that temporarily reduced the RAP to be received, as described in Note 10.4.
[7]	For the generation concession assets, ANEEL published Normative Resolution 596/2013, which deals with the definition of criteria for calculating the New replacement value (Valor novo de reposicao - VNR, in Portuguese), for the purposes of indemnification. Management's expectation of indemnification for these assets supports recoverability of the balances recorded, as described in Note 10.5.
[8]	This risk arises from the possibility that the Company might incur losses resulting from the volatility on the stock market. This type of risk involves external factors and has been managed through periodic assessment of the variations occurred in the market.

35 Financial Instruments (Det_3

35 Financial Instruments (Details 2) - Liquidity risk [member] R$ in Thousands	Dec. 31, 2020BRL (R$)
Disclosure of detailed information about financial instruments [line items]
Total financial liabilities under undiscounted cash flow	R$ 21608258
Loans and Financing [member]
Disclosure of detailed information about financial instruments [line items]
Total financial liabilities under undiscounted cash flow	4,334,551
Debentures [member]
Disclosure of detailed information about financial instruments [line items]
Total financial liabilities under undiscounted cash flow	8,080,174
Accounts payable related to concession [member]
Disclosure of detailed information about financial instruments [line items]
Total financial liabilities under undiscounted cash flow	2,090,725
Accounts payable to suppliers [member]
Disclosure of detailed information about financial instruments [line items]
Total financial liabilities under undiscounted cash flow	2,436,452
Ordinary Financing of Taxes With The Federal Tax Authorities [member]
Disclosure of detailed information about financial instruments [line items]
Total financial liabilities under undiscounted cash flow	3,927,823
Special Tax Regularization Program - Pert [member]
Disclosure of detailed information about financial instruments [line items]
Total financial liabilities under undiscounted cash flow	547,290
Sectorial financial liabilities [member]
Disclosure of detailed information about financial instruments [line items]
Total financial liabilities under undiscounted cash flow	191,243
Less than 1 month [member]
Disclosure of detailed information about financial instruments [line items]
Total financial liabilities under undiscounted cash flow	2,426,459
Less than 1 month [member] | Loans and Financing [member]
Disclosure of detailed information about financial instruments [line items]
Total financial liabilities under undiscounted cash flow	29,274
Less than 1 month [member] | Debentures [member]
Disclosure of detailed information about financial instruments [line items]
Total financial liabilities under undiscounted cash flow	335,121
Less than 1 month [member] | Accounts payable related to concession [member]
Disclosure of detailed information about financial instruments [line items]
Total financial liabilities under undiscounted cash flow	7,220
Less than 1 month [member] | Accounts payable to suppliers [member]
Disclosure of detailed information about financial instruments [line items]
Total financial liabilities under undiscounted cash flow	2,034,872
Less than 1 month [member] | Ordinary Financing of Taxes With The Federal Tax Authorities [member]
Disclosure of detailed information about financial instruments [line items]
Total financial liabilities under undiscounted cash flow
Less than 1 month [member] | Special Tax Regularization Program - Pert [member]
Disclosure of detailed information about financial instruments [line items]
Total financial liabilities under undiscounted cash flow	4,220
Less than 1 month [member] | Sectorial financial liabilities [member]
Disclosure of detailed information about financial instruments [line items]
Total financial liabilities under undiscounted cash flow	15,752
1 to 3 months [member]
Disclosure of detailed information about financial instruments [line items]
Total financial liabilities under undiscounted cash flow	608,556
1 to 3 months [member] | Loans and Financing [member]
Disclosure of detailed information about financial instruments [line items]
Total financial liabilities under undiscounted cash flow	197,056
1 to 3 months [member] | Debentures [member]
Disclosure of detailed information about financial instruments [line items]
Total financial liabilities under undiscounted cash flow	47,686
1 to 3 months [member] | Accounts payable related to concession [member]
Disclosure of detailed information about financial instruments [line items]
Total financial liabilities under undiscounted cash flow	14,444
1 to 3 months [member] | Accounts payable to suppliers [member]
Disclosure of detailed information about financial instruments [line items]
Total financial liabilities under undiscounted cash flow	309,329
1 to 3 months [member] | Ordinary Financing of Taxes With The Federal Tax Authorities [member]
Disclosure of detailed information about financial instruments [line items]
Total financial liabilities under undiscounted cash flow
1 to 3 months [member] | Special Tax Regularization Program - Pert [member]
Disclosure of detailed information about financial instruments [line items]
Total financial liabilities under undiscounted cash flow	8,456
1 to 3 months [member] | Sectorial financial liabilities [member]
Disclosure of detailed information about financial instruments [line items]
Total financial liabilities under undiscounted cash flow	31,585
3 months to 1 year [member]
Disclosure of detailed information about financial instruments [line items]
Total financial liabilities under undiscounted cash flow	2,791,182
3 months to 1 year [member] | Loans and Financing [member]
Disclosure of detailed information about financial instruments [line items]
Total financial liabilities under undiscounted cash flow	669,153
3 months to 1 year [member] | Debentures [member]
Disclosure of detailed information about financial instruments [line items]
Total financial liabilities under undiscounted cash flow	1,723,107
3 months to 1 year [member] | Accounts payable related to concession [member]
Disclosure of detailed information about financial instruments [line items]
Total financial liabilities under undiscounted cash flow	68,504
3 months to 1 year [member] | Accounts payable to suppliers [member]
Disclosure of detailed information about financial instruments [line items]
Total financial liabilities under undiscounted cash flow	26,248
3 months to 1 year [member] | Ordinary Financing of Taxes With The Federal Tax Authorities [member]
Disclosure of detailed information about financial instruments [line items]
Total financial liabilities under undiscounted cash flow	121,838
3 months to 1 year [member] | Special Tax Regularization Program - Pert [member]
Disclosure of detailed information about financial instruments [line items]
Total financial liabilities under undiscounted cash flow	38,426
3 months to 1 year [member] | Sectorial financial liabilities [member]
Disclosure of detailed information about financial instruments [line items]
Total financial liabilities under undiscounted cash flow	143,906
1 to 5 Years [member]
Disclosure of detailed information about financial instruments [line items]
Total financial liabilities under undiscounted cash flow	11,051,010
1 to 5 Years [member] | Loans and Financing [member]
Disclosure of detailed information about financial instruments [line items]
Total financial liabilities under undiscounted cash flow	1,570,564
1 to 5 Years [member] | Debentures [member]
Disclosure of detailed information about financial instruments [line items]
Total financial liabilities under undiscounted cash flow	4,953,679
1 to 5 Years [member] | Accounts payable related to concession [member]
Disclosure of detailed information about financial instruments [line items]
Total financial liabilities under undiscounted cash flow	429,573
1 to 5 Years [member] | Accounts payable to suppliers [member]
Disclosure of detailed information about financial instruments [line items]
Total financial liabilities under undiscounted cash flow	66,003
1 to 5 Years [member] | Ordinary Financing of Taxes With The Federal Tax Authorities [member]
Disclosure of detailed information about financial instruments [line items]
Total financial liabilities under undiscounted cash flow	3,805,985
1 to 5 Years [member] | Special Tax Regularization Program - Pert [member]
Disclosure of detailed information about financial instruments [line items]
Total financial liabilities under undiscounted cash flow	225,206
1 to 5 Years [member] | Sectorial financial liabilities [member]
Disclosure of detailed information about financial instruments [line items]
Total financial liabilities under undiscounted cash flow
Over 5 Years [member]
Disclosure of detailed information about financial instruments [line items]
Total financial liabilities under undiscounted cash flow	4,731,051
Over 5 Years [member] | Loans and Financing [member]
Disclosure of detailed information about financial instruments [line items]
Total financial liabilities under undiscounted cash flow	1,868,504
Over 5 Years [member] | Debentures [member]
Disclosure of detailed information about financial instruments [line items]
Total financial liabilities under undiscounted cash flow	1,020,581
Over 5 Years [member] | Accounts payable related to concession [member]
Disclosure of detailed information about financial instruments [line items]
Total financial liabilities under undiscounted cash flow	1,570,984
Over 5 Years [member] | Accounts payable to suppliers [member]
Disclosure of detailed information about financial instruments [line items]
Total financial liabilities under undiscounted cash flow
Over 5 Years [member] | Ordinary Financing of Taxes With The Federal Tax Authorities [member]
Disclosure of detailed information about financial instruments [line items]
Total financial liabilities under undiscounted cash flow
Over 5 Years [member] | Special Tax Regularization Program - Pert [member]
Disclosure of detailed information about financial instruments [line items]
Total financial liabilities under undiscounted cash flow	270,982
Over 5 Years [member] | Sectorial financial liabilities [member]
Disclosure of detailed information about financial instruments [line items]
Total financial liabilities under undiscounted cash flow

35 Financial Instruments (Det_4

35 Financial Instruments (Details 3) - Foreign exchange risk [member] R$ in Thousands	12 Months Ended
	Dec. 31, 2020BRL (R$)
Disclosure of detailed information about financial instruments [line items]
Financial assets, Baseline	R$ 133521
Financial assets, projected probable	(1,200)
Financial assets, projected scenario 1	(34,280)
Financial assets, projected scenario 2	(67,360)
Financial liabilities, Baseline	(467,551)
Financial liabilities, projected probable	4,202
Financial liabilities, projected scenario 1	(111,636)
Financial liabilities, projected scenario 2	R$ 227473
Loans and Financing [member]
Disclosure of detailed information about financial instruments [line items]
Financial assets and liabilities risk	USD appreciation
Financial liabilities, Baseline	R$ 140337
Financial liabilities, projected probable	1,261
Financial liabilities, projected scenario 1	(33,508)
Financial liabilities, projected scenario 2	R$ 68277
Suppliers - eletrobras (Itaipu) [member]
Disclosure of detailed information about financial instruments [line items]
Financial assets and liabilities risk	USD appreciation
Financial liabilities, Baseline	R$ 288640
Financial liabilities, projected probable	2,594
Financial liabilities, projected scenario 1	(68,918)
Financial liabilities, projected scenario 2	R$ 140429
Suppliers - acquisition of gas [member]
Disclosure of detailed information about financial instruments [line items]
Financial assets and liabilities risk	USD appreciation
Financial liabilities, Baseline	R$ 38574
Financial liabilities, projected probable	347
Financial liabilities, projected scenario 1	(9,210)
Financial liabilities, projected scenario 2	R$ 18767
Collaterals and escrow accounts - Stn [member]
Disclosure of detailed information about financial instruments [line items]
Financial assets and liabilities risk	USD depreciation
Financial assets, Baseline	R$ 133521
Financial assets, projected probable	(1,200)
Financial assets, projected scenario 1	(34,280)
Financial assets, projected scenario 2	(67,360)
Financial liabilities, Baseline	R$ 467551

35 Financial Instruments (Det_5

35 Financial Instruments (Details 4) - Foreign exchange risk [member] R$ in Thousands	12 Months Ended
	Dec. 31, 2020BRL (R$)
Exchange rate Variation - increase [member]
Disclosure of risk management strategy related to hedge accounting [line items]
Gains (losses) on operations with derivative financial instruments, Exchange rate variation	Increase
Gains (losses) on operations with derivative financial instruments, Baseline	R$ 23308
Gains (losses) on operations with derivative financial instruments, Probable	29,230
Gains (losses) on operations with derivative financial instruments, Projected scenario 1	56,504
Gains (losses) on operations with derivative financial instruments, Projected scenario 2	R$ 83186
Exchange rate variation - decrease [member]
Disclosure of risk management strategy related to hedge accounting [line items]
Gains (losses) on operations with derivative financial instruments, Exchange rate variation	Decrease
Gains (losses) on operations with derivative financial instruments, Baseline	R$ 23308
Gains (losses) on operations with derivative financial instruments, Probable	29,230
Gains (losses) on operations with derivative financial instruments, Projected scenario 1	3,140
Gains (losses) on operations with derivative financial instruments, Projected scenario 2	R$ 23541

35 Financial Instruments (Det_6

35 Financial Instruments (Details 5) - Interest Rate Risk And Monetary Variation [member] - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 30, 2020
Banco Do Brasil [member]
Disclosure of detailed information about financial instruments [line items]
Financial assets and liabilities risk	High CDI
Financial liabilities, Baseline	R$ 640177
Financial liabilities, projected probable	(25,607)
Financial liabilities, projected scenario 1	(32,009)
Financial liabilities, projected scenario 2	R$ 38411
BNDES [member]
Disclosure of detailed information about financial instruments [line items]
Financial assets and liabilities risk	High TJLP
Financial liabilities, Baseline	R$ 2027581
Financial liabilities, projected probable	(100,974)
Financial liabilities, projected scenario 1	(126,217)
Financial liabilities, projected scenario 2	R$ 151460
BNDES [member]
Disclosure of detailed information about financial instruments [line items]
Financial assets and liabilities risk	High IPCA
Financial liabilities, Baseline	R$ 273379
Financial liabilities, projected probable	(10,880)
Financial liabilities, projected scenario 1	(13,601)
Financial liabilities, projected scenario 2	R$ 16321
Banco Do Brasil - BNDES Transfer [member]
Disclosure of detailed information about financial instruments [line items]
Financial assets and liabilities risk	High TJLP
Financial liabilities, Baseline	R$ 83936
Financial liabilities, projected probable	(4,180)
Financial liabilities, projected scenario 1	(5,225)
Financial liabilities, projected scenario 2	R$ 6270
Caixa Economica Federal [member]
Disclosure of detailed information about financial instruments [line items]
Financial assets and liabilities risk	High TJLP
Financial liabilities, Baseline	R$ 165
Financial liabilities, projected probable	(8)
Financial liabilities, projected scenario 1	(10)
Financial liabilities, projected scenario 2	R$ 12
Other [member]
Disclosure of detailed information about financial instruments [line items]
Financial assets and liabilities risk	No risk
Financial liabilities, Baseline	R$ 48674
Financial liabilities, projected probable
Financial liabilities, projected scenario 1
Financial liabilities, projected scenario 2
Debentures [member]
Disclosure of detailed information about financial instruments [line items]
Financial assets and liabilities risk	High CDI/SELIC
Financial liabilities, Baseline	R$ 5174803
Financial liabilities, projected probable	(206,992)
Financial liabilities, projected scenario 1	(258,740)
Financial liabilities, projected scenario 2	R$ 310488
2nd Issue De Debentures [member]
Disclosure of detailed information about financial instruments [line items]
Financial assets and liabilities risk	High IPCA
Financial liabilities, Baseline	R$ 1550339
Financial liabilities, projected probable	(61,703)
Financial liabilities, projected scenario 1	(77,129)
Financial liabilities, projected scenario 2	R$ 92555
3rd Issue De Debentures [member]
Disclosure of detailed information about financial instruments [line items]
Financial assets and liabilities risk	High TJLP
Financial liabilities, Baseline	R$ 112677
Financial liabilities, projected probable	(5,611)
Financial liabilities, projected scenario 1	(7,014)
Financial liabilities, projected scenario 2	R$ 8417
Sectorial financial liabilities [member]
Disclosure of detailed information about financial instruments [line items]
Financial assets and liabilities risk	High Selic
Financial liabilities, Baseline	R$ 188709
Financial liabilities, projected probable	(7,548)
Financial liabilities, projected scenario 1	(9,435)
Financial liabilities, projected scenario 2	R$ 11323
Special Tax Regularization Program - Pert [member]
Disclosure of detailed information about financial instruments [line items]
Financial assets and liabilities risk	High Selic
Financial liabilities, Baseline	R$ 459303
Financial liabilities, projected probable	(18,372)
Financial liabilities, projected scenario 1	(22,965)
Financial liabilities, projected scenario 2	R$ 27558
Accounts payable related to concession [member]
Disclosure of detailed information about financial instruments [line items]
Financial assets and liabilities risk	High IGP-M
Financial liabilities, Baseline	R$ 678436
Financial liabilities, projected probable	(60,924)
Financial liabilities, projected scenario 1	(76,154)
Financial liabilities, projected scenario 2	R$ 91385
Accounts Payable Related To Concession [member]
Disclosure of detailed information about financial instruments [line items]
Financial assets and liabilities risk	High IPCA
Financial liabilities, Baseline	R$ 53428
Financial liabilities, projected probable	(2,126)
Financial liabilities, projected scenario 1	(2,658)
Financial liabilities, projected scenario 2	(3,190)
Financial Liabilities [member]
Disclosure of detailed information about financial instruments [line items]
Financial liabilities, Baseline	(11,291,607)
Financial liabilities, projected probable	(504,925)
Financial liabilities, projected scenario 1	(631,157)
Financial liabilities, projected scenario 2	R$ 757390
Bonds and securities [member]
Disclosure of detailed information about financial instruments [line items]
Financial assets and liabilities risk	Low CDI/SELIC
Financial assets, Baseline	R$ 300530
Financial assets, projected probable	12,023
Financial assets, projected scenario 1	9,014
Financial assets, projected scenario 2	R$ 6011
Collaterals And Escrow Accounts [member]
Disclosure of detailed information about financial instruments [line items]
Financial assets and liabilities risk	Low CDI/SELIC
Financial assets, Baseline	R$ 197
Financial assets, projected probable	8
Financial assets, projected scenario 1	6
Financial assets, projected scenario 2	4
CRC transferred to the parana state government [member]
Disclosure of detailed information about financial instruments [line items]
Financial assets and liabilities risk		Low IGP-DI
Financial assets, Baseline	1,392,624
Financial assets, projected probable	95,395
Financial assets, projected scenario 1	71,546
Financial assets, projected scenario 2	R$ 47697
Sectorial financial assets [member]
Disclosure of detailed information about financial instruments [line items]
Financial assets and liabilities risk	Low Selic
Financial assets, Baseline	R$ 346930
Financial assets, projected probable	13,877
Financial assets, projected scenario 1	10,408
Financial assets, projected scenario 2	R$ 6939
Accounts receivable - distribution concession [member]
Disclosure of detailed information about financial instruments [line items]
Financial assets and liabilities risk	Low IPCA
Financial assets, Baseline	R$ 1821138
Financial assets, projected probable	72,481
Financial assets, projected scenario 1	54,361
Financial assets, projected scenario 2	R$ 36241
Accounts Receivable - Generation Concession [member]
Disclosure of detailed information about financial instruments [line items]
Financial assets and liabilities risk	Undefined
Financial assets, Baseline	R$ 81202
Financial assets, projected probable
Financial assets, projected scenario 1
Financial assets, projected scenario 2
Financial assets [member]
Disclosure of detailed information about financial instruments [line items]
Financial assets, Baseline	3,942,621
Financial assets, projected probable	193,784
Financial assets, projected scenario 1	145,335
Financial assets, projected scenario 2	R$ 96892

35 Financial Instruments (Det_7

35 Financial Instruments (Details 6)	12 Months Ended
	Dec. 31, 2020
Until 2020 [member]
Disclosure of risk management strategy related to hedge accounting [line items]
Indicator	Economic - financial efficiency and quality
Criteria	2 consecutive years or at the end of the 5-year period (2020)
Penalties	Concession termination
Until 2020 [member]
Disclosure of risk management strategy related to hedge accounting [line items]
Indicator	Quality Indicators
Criteria	2 consecutive years or 3 times in 5 years
Penalties	Limitation of dividend and interest on equity distribution
Until 2020 [member]
Disclosure of risk management strategy related to hedge accounting [line items]
Indicator	Economic - financial efficiency
Criteria	in the base year
Penalties	Capital Increase (a) Limitation of dividend and interest on equity distribution Restrictive regime for contracts with related parties	[1]
From The 6th Year Of (2021) [member]
Disclosure of risk management strategy related to hedge accounting [line items]
Indicator	Economic and financial efficiency
Criteria	2 consecutive years
Penalties	Concession termination
From The 6th Year Of (2021) [member]
Disclosure of risk management strategy related to hedge accounting [line items]
Indicator	Quality Indicators
Criteria	3 consecutive years
Penalties	Concession termination
[1]	Within 180 days from the end of each fiscal year, in the totality of the insufficiency that occurs to reach the Minimum Economic and Financial Sustainability Parameter.

35 Financial Instruments (Det_8

35 Financial Instruments (Details 7) - Risk Of Non-Renewal Of Concessions - Distribution of Electricity [member]	12 Months Ended
	Dec. 31, 2020
2016 [member]
Disclosure of detailed information about financial instruments [line items]
Quality (limit established) DECi	13.61	[1],[2]
Quality (limit established) FECi	9.24	[1],[2]
Quality (performed) DECi	10.80
Quality (performed) FECi	7.14
2017 [member]
Disclosure of detailed information about financial instruments [line items]
Economic and Financial Management	EBITDA = 0	[3]
Realized	661,391
Quality (limit established) DECi	12.54	[1],[2]
Quality (limit established) FECi	8.74	[1],[2]
Quality (performed) DECi	10.41
Quality (performed) FECi	6.79
2018 [member]
Disclosure of detailed information about financial instruments [line items]
Economic and Financial Management	EBITDA (-) QRR = 0	[4]
Realized	550,675
Quality (limit established) DECi	11.23	[1],[2]
Quality (limit established) FECi	8.24	[1],[2]
Quality (performed) DECi	10.29
Quality (performed) FECi	6.20
2019 [member]
Disclosure of detailed information about financial instruments [line items]
Economic and Financial Management	{Net Debt / [EBITDA (-) QRR]} ≤ 1 / (0.8 * SELIC)	[5]
Realized	822,386
Quality (limit established) DECi	10.12	[1],[2]
Quality (limit established) FECi	7.74	[1],[2]
Quality (performed) DECi	9,10	[1],[2]
Quality (performed) FECi	6,00	[1],[2]
2021 [member]
Disclosure of detailed information about financial instruments [line items]
Economic and Financial Management	{Net Debt / [EBITDA (-) QRR]} ≤ 1 / (1.11 * SELIC)	[5]
Quality (limit established) DECi	9.83	[1],[2]
Quality (limit established) FECi	7.24	[1],[2]
Quality (performed) DECi	7.81	[5]
Quality (performed) FECi	5.55	[5]
[1]	According to Aneel's Technical Note No. 0335/2015.
[2]	DECi - Equivalent Time of Interruption Caused by Internal Source per Consumer Unit; and FECi - Equivalent Frequency of Interruption Caused by Internal Source per Consumer Unit.
[3]	Regulatory EBTIDA adjusted for non-recurring events (Voluntary retirement program, post-employment benefit, provisions and reversals) according to sub-clause six, of the Fifth Amendment to the Concession Agreement.
[4]	QRR: Regulatory Reintegration Quota or Regulatory Depreciation Expense. This is the value defined in the most recent Periodical Tariff Review (RTP), plus General Market Price Index (IGPM) variation between the month preceding the RTP and the month preceding the twelve-month period of the economic and financial sustainability measurement.
[5]	Selic: limited to 12.87% p.y.

35 Financial Instruments (Det_9

35 Financial Instruments (Details 8) - BRL (R$) R$ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Disclosure of detailed information about financial instruments [line items]
Net	R$ 11853814	R$ 10696367
Risk Related To Price Of Power Purchase And Sale Transactions [member]
Disclosure of detailed information about financial instruments [line items]
Current assets	51,359
Noncurrent assets	638,172
Net assets	689,531
Current liabilities	(35,298)
Noncurrent liabilities	(308,108)
Net liabilities	(343,406)
Net Current	16,061
Net Noncurrent	330,064
Net	R$ 346125

35 Financial Instruments (De_10

35 Financial Instruments (Details 9) - Risk Related To Price Of Power Purchase And Sale Transactions [member] R$ in Thousands	12 Months Ended
	Dec. 31, 2020BRL (R$)
Increase [member]
Disclosure of detailed information about financial instruments [line items]
Gains (losses) on purchase and sale of energy in active market, Price variation	Increase
Gains (losses) on purchase and sale of energy in active market, Baseline	R$ 346125
Gains (losses) on purchase and sale of energy in active market, Projected Scenario Probable	332,741
Gains (losses) on purchase and sale of energy in active market, Projected Scenario 1	356,496
Gains (losses) on purchase and sale of energy in active market, Projected Scenario 2	R$ 380117
Decrease [member]
Disclosure of detailed information about financial instruments [line items]
Gains (losses) on purchase and sale of energy in active market, Price variation	Decrease
Gains (losses) on purchase and sale of energy in active market, Baseline	R$ 346125
Gains (losses) on purchase and sale of energy in active market, Projected Scenario Probable	332,741
Gains (losses) on purchase and sale of energy in active market, Projected Scenario 1	309,255
Gains (losses) on purchase and sale of energy in active market, Projected Scenario 2	R$ 285635

35 Financial Instruments (De_11

35 Financial Instruments (Details 10) - BRL (R$) R$ / shares in Units, R$ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Disclosure of detailed information about financial instruments [line items]
Less: Cash and cash equivalents	R$ 3222768	R$ 2941727
Net income	3,909,750
Deferred IRPJ and CSLL	24,896
Provision for IRPJ and CSLL	1,260,469
Depreciation and amortization	1,009,912
Capital Management Risk [member]
Disclosure of detailed information about financial instruments [line items]
Loans and financing	3,188,531	3,142,383
Debentures	6,757,481	8,429,710
Less: Cash and cash equivalents	(3,222,768)	(2,941,727)
Less: Bonds and securities (current)	(1,465)	(3,112)
Less: Bonds and securities (noncurrent) - debt contract guarantees	(175,901)	(121,617)
Less: Collaterals and escrow accounts STN	(133,521)	(98,433)
Adjusted net debt	6,412,357	8,407,204
Net income	3,834,172	2,062,869
Equity in earnings of investees	(193,547)	(106,757)
Deferred IRPJ and CSLL	24,896	205,771
Provision for IRPJ and CSLL	1,260,469	433,555
Financial expenses (income), net	(866,271)	(488,486)
Depreciation and amortization	1,009,913	1,093,836
Adjusted ebitda	R$ 5069632	R$ 4177760
Adjusted net debt / Ebitda (in R$ per share)	R$ 1.26	R$ 2.01

35 Financial Instruments (De_12

35 Financial Instruments (Details 11) - BRL (R$) R$ / shares in Units, R$ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Disclosure of detailed information about financial instruments [line items]
Less: Cash and cash equivalents	R$ 3222768	R$ 2941727
Net debt	3,188,531	3,142,383
Equity	20,250,518	17,598,212	R$ 16336214	R$ 15345579
Capital Management Risk [member]
Disclosure of detailed information about financial instruments [line items]
Loans and financing	3,188,531	3,142,383
Debentures	6,757,481	8,429,710
Less: Cash and cash equivalents	3,222,768	2,941,727
Less: Bonds and securities	1,465	3,112
Capital Management Risk [member] | Indebtedness [member]
Disclosure of detailed information about financial instruments [line items]
Loans and financing	3,214,249	3,168,710
Debentures	6,837,819	8,540,366
Less: Cash and cash equivalents	3,222,768	2,941,727
Less: Bonds and securities	300,530	282,081
Net debt	6,528,770	8,485,268
Equity	R$ 20250518	R$ 17598212
Debit to equity ratio (in R$ per share)	R$ 0.32	R$ 0.48

35 Financial Instruments (De_13

35 Financial Instruments (Details Narrative) € in Thousands, R$ in Thousands	12 Months Ended
	Dec. 31, 2020BRL (R$)ExchangeMonths	Dec. 31, 2020EUR (€)Exchange
Disclosure of detailed information about financial instruments [line items]
Basic assumption for discount of expected payment flows	IPCA + Spread de 4.8165%
Percentage of discounted expected cash inflows	(9.04%)
Percentage of net discount rate	8.64%
Closing foreign exchange rate (R$/USD) | Exchange	5.15	5.15
Percentage of electric shortage risk	64.00%
Percentage of maximum electric shortage risk	5.00%
Increase (decrease) in energy reallocation mechanism	Restricted to 5% by revision or 10% in the concession period.
Euro
Disclosure of detailed information about financial instruments [line items]
Notional value | €		€ 15,500
Bottom Of Range [member]
Disclosure of detailed information about financial instruments [line items]
Extended term for thermoelectric power generation | Months	36
Percentage of distributor contracting level	100.00%
Top Of Range [member]
Disclosure of detailed information about financial instruments [line items]
Final term for thermoelectric power generation | Months	60
Percentage of distributor contracting level	105.00%
Foreign exchange risk [member]
Disclosure of detailed information about financial instruments [line items]
Financial instruments probable scenario 1	25.00%
Financial instruments probable scenario 2	50.00%
Derivative Financial Instruments [member]
Disclosure of detailed information about financial instruments [line items]
Financial instruments probable scenario 1	25.00%
Financial instruments probable scenario 2	50.00%
Interest Rate Risk And Monetary Variation [member]
Disclosure of detailed information about financial instruments [line items]
Financial instruments probable scenario 1	25.00%
Financial instruments probable scenario 2	50.00%
Description of sensitivity analysis of interest rate and monetary variation risk baseline scenario	CDI/Selic – 4.00%, IPCA – 3.98%, IGP-DI – 6.85%, IGP-M - 8,98% and TJLP – 4.98%
Purchase Contracts Risk [member]
Disclosure of detailed information about financial instruments [line items]
Notional value | R$	R$ 6065065
Sale Contracts Risk [member]
Disclosure of detailed information about financial instruments [line items]
Notional value | R$	R$ 6634477
National Treasury Bond (NTN-B) [member]
Disclosure of detailed information about financial instruments [line items]
Maturity of debt instrument	Aug. 15, 2026
Percentage of debt instrument yield	3.09%
Thermoelectric Power Generation [member] | Risk Of Non-Renewal Of Concessions [member]
Disclosure of detailed information about financial instruments [line items]
Extension Terms	20 years
Hydroelectric Power Generation And Electric Power Transmission [member] | Risk Of Non-Renewal Of Concessions [member]
Disclosure of detailed information about financial instruments [line items]
Description of concession base on decree	The manifestation of sale of the concession must take place within up to 42 months from the date of the related formal agreement, and any sale must take place within up to 18 months from the concession end date.
Extension Terms	30 years
Two Plant Of Generation And Transmission [member] | Risk Of Non-Renewal Of Concessions [member]
Disclosure of detailed information about financial instruments [line items]
Maturity terms of concessions	5 years
HPP Governador Bento Munhoz Da Rocha Netto [member] | Risk Of Non-Renewal Of Concessions [member]
Disclosure of detailed information about financial instruments [line items]
Maturity terms of concessions	2023

36 Related Party Transactions_2

36 Related Party Transactions (Details) - BRL (R$) R$ in Thousands		12 Months Ended
		Dec. 31, 2020		Dec. 31, 2019		Dec. 31, 2018
Disclosure of transactions between related parties [line items]
Assets		R$ 46784664
Net operating revenues		18,633,249
Operating costs and expenses		(13,347,822)
Joint Ventures [member] | Integracao Maranhense Transmissora [Member]
Disclosure of transactions between related parties [line items]
Assets	[1],[2]	160		R$ 161
Operating costs and expenses	[1],[2]	(2,029)		(1,938)		R$ 1797
Joint Ventures [member] | Integracao Maranhense Transmissora [Member] | Dividends [Member]
Disclosure of transactions between related parties [line items]
Assets		3,806		4,306
Joint Ventures [member] | Caiua Transmissora De Energia [Member]
Disclosure of transactions between related parties [line items]
Assets	[1],[2],[3],[4]	261		256
Liabilities	[1],[2],[3],[4]	1,401		1,512
Net operating revenues	[1],[2],[3],[4]	3,114		2,792		4,250
Operating costs and expenses	[1],[2],[3],[4]	(16,267)		(14,233)		(14,869)
Joint Ventures [member] | Caiua Transmissora De Energia [Member] | Dividends [Member]
Disclosure of transactions between related parties [line items]
Assets		4,443		4,443
Joint Ventures [member] | Voltalia Sao Miguel Do Gostoso - Mutual [Member]
Disclosure of transactions between related parties [line items]
Net operating revenues						294
Joint Ventures [member] | Voltalia Sao Miguel Do Gostoso - Mutual [Member] | Dividends [Member]
Disclosure of transactions between related parties [line items]
Assets		1,032		1,032
Joint Ventures [member] | Matrincha Transmissora De Energia [Member]
Disclosure of transactions between related parties [line items]
Liabilities	[1],[2]	959		829
Operating costs and expenses	[1],[2]	(11,259)		(10,137)		(9,514)
Joint Ventures [member] | Matrincha Transmissora De Energia [Member] | Dividends [Member]
Disclosure of transactions between related parties [line items]
Assets		34,460		31,793
Joint Ventures [member] | Guaraciaba Transmissora De Energia [Member]
Disclosure of transactions between related parties [line items]
Liabilities	[1],[2]	436		383
Operating costs and expenses	[1],[2]	(5,348)		(4,853)		(4,475)
Joint Ventures [member] | Guaraciaba Transmissora De Energia [Member] | Dividends [Member]
Disclosure of transactions between related parties [line items]
Assets		16,281		14,846
Joint Ventures [member] | Paranaiba Transmissora De Energia [Member]
Disclosure of transactions between related parties [line items]
Liabilities	[1],[2]	649		638
Operating costs and expenses	[1],[2]	(8,141)		(6,514)		(6,595)
Joint Ventures [member] | Paranaiba Transmissora De Energia [Member] | Dividends [Member]
Disclosure of transactions between related parties [line items]
Liabilities				5,962
Joint Ventures [member] | Cantareira Transmissora de Energia [Member]
Disclosure of transactions between related parties [line items]
Liabilities	[1],[2]	468		467
Operating costs and expenses	[1],[2]	(5,912)		(5,403)		(1,618)
Joint Ventures [member] | Mata De Santa Genebra Transmissao [Member]
Disclosure of transactions between related parties [line items]
Assets	[1]	4,034		2,035
Liabilities	[1]	990		10
Net operating revenues	[1]	17,636		16,449		6,600
Operating costs and expenses	[1]	(7,636)		(340)
State Of Parana Investee [Member] | Sanepar [Member]
Disclosure of transactions between related parties [line items]
Assets	[4],[5]	223		294
Liabilities	[4],[5]	582		311
Net operating revenues	[4],[5]	4,956		4,710		4,200
Operating costs and expenses	[4],[5]	(6,598)		(5,852)		(5,227)
State Of Parana Investee [Member] | Use Of Water Withdrawn From Plants Reservoirs [Member]
Disclosure of transactions between related parties [line items]
Net operating revenues		620		480
Entities With Significant Influence [Member] | BNDES And BNDESPAR [Member] | Debentures Wind Farms [Member]
Disclosure of transactions between related parties [line items]
Liabilities	[6]	239,249		253,877
Operating costs and expenses	[6]	(25,891)		(28,240)		(30,316)
Entities With Significant Influence [Member] | BNDES And BNDESPAR [Member] | Debentures Compagas [Member]
Disclosure of transactions between related parties [line items]
Liabilities		5,890		11,783
Operating costs and expenses		(1,681)		(1,194)		(2,625)
Entities With Significant Influence [Member] | BNDES And BNDESPAR [Member] | Financing [Member]
Disclosure of transactions between related parties [line items]
Liabilities		2,314,166		2,231,409
Operating costs and expenses		(151,850)		(175,461)		(131,379)
Entities With Significant Influence [Member] | BNDES And BNDESPAR [Member] | Dividends Payable [Member]
Disclosure of transactions between related parties [line items]
Liabilities	[7]	568,315		130,204
Controlling Shareholder [Member] | State of Parana [Member] | Meteorological System of Parana - Simepar [Member]
Disclosure of transactions between related parties [line items]
Assets	[4],[8]	2		10
Liabilities	[4],[8]	855		705
Net operating revenues		48	[4],[8]	58	[4],[8]	54
Operating costs and expenses		(8,573)	[4],[8]	(7,087)	[4],[8]	(1,559)	[9]
Controlling Shareholder [Member] | State of Parana [Member] | Telecommunication Services [Member]
Disclosure of transactions between related parties [line items]
Assets	[4]	13,686		16,278
Net operating revenues	[4]	43,248		43,011		41,375
Controlling Shareholder [Member] | State of Parana [Member] | Morar Bem Parana Program [Member]
Disclosure of transactions between related parties [line items]
Assets	[10]	1,057
Controlling Shareholder [Member] | State of Parana [Member] | Tarifa Rural Noturna Program [Member]
Disclosure of transactions between related parties [line items]
Assets	[10]	8,168		7,639
Controlling Shareholder [Member] | State of Parana [Member] | Luz Fraterna Program [Member]
Disclosure of transactions between related parties [line items]
Assets	[10]	6,682		7,478
Controlling Shareholder [Member] | State of Parana [Member] | CRC Transfer [Member]
Disclosure of transactions between related parties [line items]
Assets		1,392,624		1,350,685
Net operating revenues		341,964		184,229		188,797
Controlling Shareholder [Member] | State of Parana [Member] | Dividends Payable [Member]
Disclosure of transactions between related parties [line items]
Liabilities		749,338		190,664
Controlling Shareholder [Member] | State of Parana [Member] | Employees Transferred [Member]
Disclosure of transactions between related parties [line items]
Assets	[8]	87		33
Associates [Member] | Dona Francisca Energetica S.A [Member]
Disclosure of transactions between related parties [line items]
Assets	[1]	13		40
Liabilities	[1]	1,436		1,436
Net operating revenues	[1]	162		145
Operating costs and expenses	[1]	(17,078)		(16,905)		(16,903)
Associates [Member] | Foz do Chopim Energetica Ltda. [Member]
Disclosure of transactions between related parties [line items]
Assets		216		209
Net operating revenues		2,675		2,538		2,668
Associates [Member] | Sercomtel S.A. Telecomunicacoes [Member]
Disclosure of transactions between related parties [line items]
Assets				4,436
Net operating revenues		8,299		8,354		8,051
Operating costs and expenses		4		(21)		(4)
Key Management Staff [Member] | Fees And Social Security Charges [Member]
Disclosure of transactions between related parties [line items]
Operating costs and expenses		21,935		(25,860)		(27,368)
Key Management Staff [Member] | Pension And Healthcare Plans [Member]
Disclosure of transactions between related parties [line items]
Operating costs and expenses		(1,116)		(1,560)		(1,725)
Other Related Parties [Member] | Pension And Healthcare Plans [Member]
Disclosure of transactions between related parties [line items]
Liabilities		1,493,614		1,194,936
Other Related Parties [Member] | Administrative Property Rental [Member]
Disclosure of transactions between related parties [line items]
Liabilities		1,836		14,662
Operating costs and expenses		(1,285)		(2,520)		(15,396)
Other Related Parties [Member] | Fundacao Copel [Member]
Disclosure of transactions between related parties [line items]
Assets		40		9
Net operating revenues		315		285		299
Other Related Parties [Member] | Lactec
Disclosure of transactions between related parties [line items]
Assets	[4],[11]	5		4
Liabilities	[4],[11]	2,747		1,507
Net operating revenues	[4],[11]	771		746
Operating costs and expenses	[4],[11]	(2,702)		(2,787)		(4,026)
Other Related Parties [Member] | Tecpa [member]
Disclosure of transactions between related parties [line items]
Assets		11	[4]	9
Net operating revenues		862	[4]	81		68
Other Related Parties [Member] | Celepa [member]
Disclosure of transactions between related parties [line items]
Assets		4	[4],[12]	15
Liabilities	[4],[12]	2		21
Net operating revenues		51	[4],[12]	112		R$ 85
Operating costs and expenses	[4],[12]	R$ 50		R$ 5
[1]	Charges for use of the transmission system due by Copel GeT, UEG Araucaria and wind farms.
[2]	Copel DIS maintains a Contract for the Use of Transmission System (Cust) with ONS and power transmission concession operators whose subject matter is the contracting of Transmission System Use Amount (Must). Contracting is permanent and is regulated by ANEEL Normative Resolution 666/2015. Amounts are defined for four subsequent years, with annual reviews.
[3]	Operation and maintenance services agreement provided by Copel GeT, maturing on May 9, 2021. Transmission System Connection Agreement - CCT executed by Copel DIS, expiring by the end of the concession agreement of the distribution or transmission company, whichever takes place first.
[4]	Revenue of Copel TEL from telecommunications services and lease of equipment and infrastructure. The balances presented are net of expected credit losses.
[5]	Basic sanitation provided by Sanepar.
[6]	BNDES and BNDESPAR acquired all the debentures issued by the subsidiaries Nova Asa Branca I, Nova Asa Branca II, Nova Asa Branca III, Nova Eurus IV and Ventos de Santo Uriel.
[7]	BNDES is the parent company of BNDES Participacoes S.A. - BNDESPAR, which owns Copel shares (Note 30.1). On December 22, 2018, the shareholder agreement between the State of Parana and BNDESPAR, signed on December 22, 1998, was ended.
[8]	Reimbursement of wages and social charges for employees transferred to the Parana State Government. Balances presented are net of expected credit loss.
[9]	The Sistema Meteorologico do Parana - Simepar is a supplementary unit of the Independent Social Service Parana Technology, linked to the State Department of Science, Technology and Higher Education. Simepar has contracts with Copel for services of weather forecast, meteorological reports, ampacity analysis, mapping and analyses of winds and atmospheric discharges.
[10]	The Luz Fraterna Program created under Law 491/2013 and 17,639/2013 establishes the payment of electricity consumption to benefit low-income families, residing in the State of Parana, whose properties - consumer units - are used exclusively for residential purposes, whether in urban or rural areas, and fulfill the requirements established in articles 3 and 4 of this law.
[11]	The Institute of Technology for Development (Lactec) is a Public Interest Civil Society Organization (OSCIP), in which Copel is an associate. Lactec has service and R&D contracts with Copel GeT, UEGA and Copel DIS, which are subject to prior or later control and approval by ANEEL. Copel COM provides services and sells energy to the institute.
[12]	Service agreements entered into with the Parana Information Technology Company (Celepar), a mixed capital company that is part of the indirect administration of the State Government

36 Related Party Transactions_3

36 Related Party Transactions (Details 1) R$ in Thousands	12 Months Ended
	Dec. 31, 2020BRL (R$)
Disclosure of transactions between related parties [line items]
Amount guarantees	R$ 977484
Caiua Transmissora [Member]
Disclosure of transactions between related parties [line items]
Operation	Financing	[1]
Date issued	12-23-2013	[1]
Final maturity	02.15.2029	[1]
Amount approved	R$ 84600	[1]
Balance	R$ 50256	[1]
Interest	49.00%	[1]
Amount guarantees	R$ 5956	[1]
Cantareira Transmissora de Energia [Member]
Disclosure of transactions between related parties [line items]
Operation	Financing	[1]
Date issued	12.28.2016	[1]
Final maturity	09.15.2032	[1]
Amount approved	R$ 426834	[1]
Balance	R$ 431366	[1]
Interest	49.00%	[1]
Amount guarantees	R$ 28175	[1]
Guaraciaba Transmissora [Member]
Disclosure of transactions between related parties [line items]
Operation	Financing
Date issued	09.28.2016
Final maturity	01.15.2031
Amount approved	R$ 440000
Balance	R$ 351596
Interest	49.00%
Amount guarantees	R$ 172282
Guaraciaba Transmissora [Member]
Disclosure of transactions between related parties [line items]
Operation	Debentures
Date issued	07.15.2018
Final maturity	12.15.2030
Amount approved	R$ 118000
Balance	R$ 123946
Interest	49.00%
Amount guarantees	R$ 60734
Mata de santa genebra [member]
Disclosure of transactions between related parties [line items]
Operation	Financing
Date issued	11.30.2017
Final maturity	07.15.2033
Amount approved	R$ 1018500
Balance	R$ 1112282
Interest	50.10%
Amount guarantees	R$ 557253
Mata de Santa Genebra [Member]
Disclosure of transactions between related parties [line items]
Operation	Debentures
Date issued	04.15.2019
Final maturity	11.15.2030
Amount approved	R$ 210000
Balance	R$ 208014
Interest	50.10%
Amount guarantees	R$ 104215
Cantareira Transmissora de Energia [Member]
Disclosure of transactions between related parties [line items]
Operation	Debentures
Date issued	01.09.2018
Final maturity	08.15.2032
Amount approved	R$ 100000
Balance	R$ 99732
Interest	49.00%
Amount guarantees	R$ 48869
[1]	Guarantee awarded of fixed amount pursuant to the contractual provisions and formal requirements of the financial institution.

36 Related Party Transactions_4

36 Related Party Transactions (Details 2) R$ in Thousands	12 Months Ended
	Dec. 31, 2020BRL (R$)
Disclosure of transactions between related parties [line items]
Amount insured	R$ 83328
Matrincha Transmissora [Member]
Disclosure of transactions between related parties [line items]
Final maturity	Feb. 15, 2029
Amount insured	R$ 90000
Endorsement percent, Copel GeT	49.00%
Amount endorsement	R$ 44100
Mata de Santa Genebra [Member]
Disclosure of transactions between related parties [line items]
Final maturity	Feb. 28, 2022
Amount insured	R$ 78300
Endorsement percent, Copel GeT	50.10%
Amount endorsement	R$ 39228

36 Related Party Transactions_5

36 Related Party Transactions (Details Narrative) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Mar. 31, 2018
Disclosure of transactions between related parties [line items]
Settled amount			R$ 159274
Principal interest			R$ 158849
Copel Geracao e Transmissao S.A. [Member] | Financial Guarantee [Member]
Disclosure of transactions between related parties [line items]
Provision of guarantees or collateral by entity, related party transactions	R$ 112069	R$ 21846
Copel Comercializacao S.A. [Member] | Financial Guarantee [Member]
Disclosure of transactions between related parties [line items]
Provision of guarantees or collateral by entity, related party transactions	R$ 4307	R$ 4005
Copel GeT [member] | Operation and maintenance services agreement [member]
Disclosure of transactions between related parties [line items]
Maturity terms	May 9, 2021
Copel GeT [member] | Operation and maintenance services agreement [member]
Disclosure of transactions between related parties [line items]
Maturity terms	Feb. 1, 2023
Copel GeT [member] | Connection to the transmission system contracts [member]
Disclosure of transactions between related parties [line items]
Description of maturity terms	August 17, 2031 until July 21, 2048
Copel GeT [member] | Operation and maintenance [member]
Disclosure of transactions between related parties [line items]
Maturity terms	May 23, 2025
Copel GeT [member] | Transmission system [member]
Disclosure of transactions between related parties [line items]
Maturity terms	Jan. 1, 2043
Copel COM [member] | Energy sale contracts [member]
Disclosure of transactions between related parties [line items]
Sales commitments	R$ 9232

37 Commitments (Details)

37 Commitments (Details) - BRL (R$) R$ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Energy Purchase and Transportation Contracts [member]
DisclosureOfCommitmentsLineItems [Line Items]
Commitments	R$ 132879053	R$ 137279155
Construction of Transmission Grid and Substations [member]
DisclosureOfCommitmentsLineItems [Line Items]
Commitments	12,062	115,732
Construction Of Cutia Wind Farm [member]
DisclosureOfCommitmentsLineItems [Line Items]
Commitments	330,257
Construction Of SHP Bela Vista [member]
DisclosureOfCommitmentsLineItems [Line Items]
Commitments	23,717	111,481
Telecommunications Works [member]
DisclosureOfCommitmentsLineItems [Line Items]
Commitments	132,430	90,769
Acquisition Of Assets For Electricity Distribution [member]
DisclosureOfCommitmentsLineItems [Line Items]
Commitments	978,189	428,441
Gas Purchase Contracts [member]
DisclosureOfCommitmentsLineItems [Line Items]
Commitments	R$ 655422	R$ 859211

38 Insurance (Details)

38 Insurance (Details) R$ in Thousands	12 Months Ended
	Dec. 31, 2020BRL (R$)
Operational Risks HPP Baixo Iguacu [member]
Disclosure of types of insurance contracts [line items]
End of term	May 30, 2021
Insured amount	R$ 2250207
Operational Risks HPP Colider [member]
Disclosure of types of insurance contracts [line items]
End of term	Nov. 10, 2021
Insured amount	R$ 2166984
Cutia and Bento Miguel[member]
Disclosure of types of insurance contracts [line items]
End of term	Mar. 29, 2022
Insured amount	R$ 2016287
Nominated Risks [member]
Disclosure of types of insurance contracts [line items]
End of term	Aug. 24, 2021
Insured amount	R$ 2005408
Operational Risks Brisa Potiguar [member]
Disclosure of types of insurance contracts [line items]
End of term	Jun. 27, 2021
Insured amount	R$ 914610
Operational risks ueg araucaria [member]
Disclosure of types of insurance contracts [line items]
End of term	May 31, 2021	[1]
Insured amount	R$ 882035	[1]
Fire Company Owned and Rented Facilities [member]
Disclosure of types of insurance contracts [line items]
End of term	Aug. 24, 2021
Insured amount	R$ 800636
Operational Risks HPP Governador Jayme Canet Junior [member]
Disclosure of types of insurance contracts [line items]
End of term	Nov. 23, 2021
Insured amount	R$ 799290
Multi Risk Elejor [member]
Disclosure of types of insurance contracts [line items]
End of term	Mar. 11, 2022
Insured amount	R$ 763007
Operational Risks Sao Bento [member]
Disclosure of types of insurance contracts [line items]
End of term	Jun. 27, 2021
Insured amount	R$ 571848
[1]	The values of the insured of operating risks - UEG Araucaria have been translated from USD into BRL, with the current rate R$5.1967 as of December 31, 2020.

38 Insurance (Details Narrative

38 Insurance (Details Narrative)	Dec. 31, 2020Exchange
Disclosure of types of insurance contracts [line items]
Insured of operating risks	5.15
Operational risks ueg araucaria [member]
Disclosure of types of insurance contracts [line items]
Insured of operating risks	4.0307

39 Additional information to _2

39 Additional information to the Statement of Cash Flows (Details Narrative) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disclosure of detailed information about property, plant and equipment [line items]
Contract Assets	R$ 1406454	R$ 1039234	R$ 813450
Property, plant and equipment acquisitions	273,823	551,162	1,455,318
Right-of-use assets	132,521
Foz do Chopim Energetica Ltda [member]
Disclosure of detailed information about property, plant and equipment [line items]
Accounts payable to suppliers			19,461
Purchases made in installments and not settled [member]
Disclosure of detailed information about property, plant and equipment [line items]
Contract Assets	104,834	48,068	50,927
Property, plant and equipment acquisitions	R$ 21773	R$ 52446	R$ 71454

40 Assets held for sale and d_2

40 Assets held for sale and discontinued operations (Details) - BRL (R$) R$ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Assets classified as held for sale
Cash and cash equivalents	R$ 3222768	R$ 2941727
Trade accounts receivable	3,768,242	3,120,168
Inventories	162,791
Escrow accounts	197
Property, plant and equipment	9,495,460	10,592,103
Intangible assets	6,929,456	6,332,611
Right-of-use asset	132,521
Other receivables	514,185	426,865
Assets held for sale	1,230,546
Liabilities associated with assets classified as held for sale
Accounts payable to suppliers	2,291,307	R$ 1685280
Lease liability	41,193
Provisions for legal claims	1,555,704
Liabilities associated with assets held for sale	756,405
Discontinued operations [member]
Assets classified as held for sale
Cash and cash equivalents	277,119
Trade accounts receivable	60,543
Inventories	6,741
Current recoverable taxes and Deferred taxes	124,262
Escrow accounts	16,086
Property, plant and equipment	716,924
Intangible assets	10,587
Right-of-use asset	11,247
Other receivables	7,037
Assets held for sale	1,230,546
Liabilities associated with assets classified as held for sale
Accounts payable to suppliers	16,916
Taxes due	35,426
Debentures	657,590
Lease liability	11,740
Provisions for legal claims	33,147
Other accounts payable	1,586
Liabilities associated with assets held for sale	R$ 756405

40 Assets held for sale and d_3

40 Assets held for sale and discontinued operations (Details 1) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
AssetsHeldForSaleAndDiscontinuedOperationsLineItems [Line Items]
Net Operating Revenue	R$ 18633249
Operating costs and expenses	(13,347,822)
Gross Profit	5,285,427
Selling expenses	(159,825)
General and administrative expenses	(809,408)
Other operational income (expenses)	(256,475)
PROFIT BEFORE FINANCIAL RESULTS AND TAXES	(1,032,161)
Profit (Loss) before financial results and taxes	4,253,266
Financial results	866,271
Operating profit	5,119,537
Income tax and social contribution	1,285,365
Net income (Loss)	75,578
Discontinued operations [member]
AssetsHeldForSaleAndDiscontinuedOperationsLineItems [Line Items]
Net Operating Revenue	355,843	R$ 375028	R$ 384316
Operating costs and expenses	(100,684)	(296,028)	(128,780)
Gross Profit	255,159	79,000	255,536
Selling expenses	(31,244)	(31,286)	(43,295)
General and administrative expenses	(21,333)	(23,010)	(16,691)
Other operational income (expenses)	(50,518)	(136,310)	(52,686)
PROFIT BEFORE FINANCIAL RESULTS AND TAXES	(103,095)	(190,606)	(112,672)
Profit (Loss) before financial results and taxes	152,064	(111,606)	142,864
Financial results	(33,378)	(33,122)	(24,905)
Operating profit	118,686	(144,728)	117,959
Income tax and social contribution	(43,108)	36,335	(40,826)
Net income (Loss)	R$ 75578	R$ 108393	R$ 77133

40 Assets held for sale and d_4

40 Assets held for sale and discontinued operations (Details 2) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
AssetsHeldForSaleAndDiscontinuedOperationsLineItems [Line Items]
Net income	R$ 75578
Adjustments to reconcile net income	3,577,975
Changes in assets and liabilities	89,752
Taxes and charges paid	636,420
Cash flows from operational activities	(3,940,844)
Additions to property, plant and equipment and intangible assets	(226,325)
Cash flows from investment activities	(1,667,571)
Payment of loans and financing and lease	(248,863)
Cash flows from financing activities	(1,715,113)
Discontinued operations [member]
AssetsHeldForSaleAndDiscontinuedOperationsLineItems [Line Items]
Net income	75,578	R$ 108393	R$ 77133
Adjustments to reconcile net income	282,914	419,093	209,218
Changes in assets and liabilities	(16,958)	(38,821)	(11,478)
Taxes and charges paid	(73,050)	(51,464)	(83,488)
Cash flows from operational activities	268,484	220,415	191,385
Additions to property, plant and equipment and intangible assets	(73,573)	(175,569)	(280,542)
Cash flows from investment activities	(73,573)	(175,569)	(280,542)
Issue of Debentures		210,000
Payment of loans and financing and lease	(20,038)	(9,260)	(5,804)
Cash flows from financing activities	(20,038)	200,740	(5,804)
Changes in cash and cash equivalents	R$ 174873	R$ 245586	R$ 94961

40 Assets held for sale and d_5

40 Assets held for sale and discontinued operations (Details Narrative) - BRL (R$) R$ in Thousands	Sep. 16, 2020	Sep. 11, 2020	Dec. 31, 2020	Dec. 31, 2019
AssetsHeldForSaleAndDiscontinuedOperationsLineItems [Line Items]
Percentage of goodwill			85.00%	101.50%
Copel Telecomunicacoes [member]
AssetsHeldForSaleAndDiscontinuedOperationsLineItems [Line Items]
Minimum divestment price	R$ 1401090
Bid amount		R$ 2395000
Percentage of goodwill		70.94%
Contingent liabilities			R$ 74437

41 Subsequent events (Details N

41 Subsequent events (Details Narrative) - Events After Reporting Period [member] - Lease agreement [member] - Fundacao Copel de Previdencia e Assistencia Social [member] R$ in Thousands	Feb. 22, 2021BRL (R$)
DisclosureOfSubsequentEventsLineItems [Line Items]
Initial value	R$ 9540
Total estimated value	R$ 224513
Agreement term	20 years

42 Condensed individual finan_3

42 Condensed individual financial information of Companhia Paranaense de Energia - Copel (Details) - BRL (R$) R$ in Thousands	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
CURRENT ASSETS
Cash and cash equivalents	R$ 3222768	R$ 2941727
Bonds and securities	1,465	3,112
CRC transferred to the Parana State Government	287,789
Other current receivables	514,185	426,865
Income tax and social contribution	86,410
Before assets held for sale	10,176,885
Assets held for sale	1,230,546
Total current assets	11,407,431
Long Term Assets
Other temporary investments	22,385
CRC transferred to the Parana State Government	1,104,835
Judicial deposits	486,746	504,190
Other noncurrent receivables	4,515
Deferred income tax and social contribution	1,191,104	1,011,866	R$ 1007061
Other noncurrent recoverable taxes	4,539,498	322,011
Subtotal	16,090,279	10,862,630
Investments	2,729,517	2,523,179	2,368,234
Property, Plant and Equipment	9,495,460	10,592,103
Intangible Assets	6,929,456	6,332,611
Right-of-use asset	132,521
Total non current asset	35,377,233
ASSETS	46,784,664
CURRENT LIABILITIES
Payroll, social charges and accruals	684,046	337,044
Suppliers	2,291,307	1,685,280
Income tax and social contribution	681,831
Other taxes due	490,608	501,068
Loans and financing	717,677	255,521
Debentures	1,881,411
Dividend payable	991,887
Post-employment benefits	69,231	66,004
Lease liability	41,193
Other accounts payable	235,400	149,407
Total current liabilities	9,654,392
NONCURRENT LIABILITIES
Other taxes due	622,483	662,114
Loans and financing	2,470,854	2,886,862
Debentures	4,876,070
Post-employment benefits	1,424,383	1,128,932
Lease liability	97,168
Other accounts payable	469,886	349,462
Provisions for legal claims	1,555,704
Total noncurrent liabilities	16,879,754
EQUITY
Share capital	10,800,000	10,800,000
Equity valuation adjustments	353,349	591,927	785,610
Legal reserve	1,209,458
Additional dividends proposed from the non-capitalized earning reserve	1,507,449
TOTAL EQUITY	20,250,518	17,598,212	16,336,214	R$ 15345579
TOTAL LIABILITIES & EQUITY	46,784,664
Companhia Paranaense de Energia - Copel [member]
CURRENT ASSETS
Cash and cash equivalents	42,700	25,304	R$ 315003	R$ 56833
Bonds and securities	90	90
Dividends receivable	1,290,114	760,719
CRC transferred to the Parana State Government	287,789	219,236
Other current receivables	1,025	1,068
Income tax and social contribution	12,171	5,876
Prepaid expenses	150	95
Receivable from related parties	40,298	6,039
Before assets held for sale	1,674,337	1,018,427
Assets held for sale	758,742
Total current assets	2,433,079	1,018,427
Long Term Assets
Other temporary investments	22,385	27,734
CRC transferred to the Parana State Government	1,104,835	1,131,449
Judicial deposits	125,738	124,219
Other noncurrent receivables	7,443	7,444
Income tax and social contribution receivable	117,682	123,951
Deferred income tax and social contribution	282,132	154,364
Other noncurrent recoverable taxes	88,331	87,597
Receivable from related parties	140,337	108,983
Subtotal	1,888,883	1,765,741
Investments	18,807,102	17,286,220
Property, Plant and Equipment	2,725	1,143
Intangible Assets	2,041	1,321
Right-of-use asset	962	271
Total non current asset	20,701,713	19,054,696
ASSETS	23,134,792	20,073,123
CURRENT LIABILITIES
Payroll, social charges and accruals	16,759	8,437
Related parties	283,650	696
Suppliers	3,184	3,956
Income tax and social contribution		1,811
Other taxes due	952	120
Loans and financing	512,086	39,628
Debentures	301,972	315,008
Dividend payable	944,274	588,563
Post-employment benefits	226	378
Lease liability	279	158
Other accounts payable	567	116
Total current liabilities	2,063,949	958,871
NONCURRENT LIABILITIES
Related parties	5,851	145
Other taxes due	2,978	2,817
Loans and financing	266,682	746,075
Debentures	499,317	797,713
Post-employment benefits	9,929	8,658
Lease liability	707	125
Other accounts payable	1,936	1,434
Provisions for legal claims	324,332	304,871
Total noncurrent liabilities	1,111,732	1,861,838
EQUITY
Share capital	10,800,000	10,800,000
Equity valuation adjustments	353,349	591,927
Legal reserve	1,209,458	1,014,248
Retained earnings	6,088,855	4,846,239
Additional dividends proposed from the non-capitalized earning reserve	1,507,449
TOTAL EQUITY	19,959,111	17,252,414
TOTAL LIABILITIES & EQUITY	R$ 23134792	R$ 20073123

42 Condensed individual finan_4

42 Condensed individual financial information of Companhia Paranaense de Energia - Copel (Details 1) - BRL (R$) R$ / shares in Units, R$ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Operating revenues (expenses)
General and administrative expenses	R$ 809408
Other operational income (expenses)	(256,475)
Result of equity in investees	193,547
Total operational expenses / income	(1,032,161)
Net income from continuing operations	3,834,172
Financial income (expenses)
Financial income	1,839,668
Financial expenses	(973,397)
Total financial results	866,271
Operating profit	5,119,537
Income tax and social contribution
Current	(1,260,469)
Deferred	(24,896)
Deferred income tax and social contribution	(1,285,365)
NET INCOME FROM CONTINUING OPERATIONS	3,834,172
Discontinued operations
Net income (loss) from discontinued operations	75,578
NET INCOME	3,909,750
Restated [Member]
Operating revenues (expenses)
General and administrative expenses		R$ 711289	R$ 706844
Other operational income (expenses)		(322,506)	(250,004)
Result of equity in investees		106,757	135,888
Total operational expenses / income		(1,102,810)	(926,374)
Net income from continuing operations		2,171,262	1,366,871
Financial income (expenses)
Financial income		729,506	797,107
Financial expenses		(1,184,870)	(1,210,252)
Total financial results		(455,364)	(413,145)
Operating profit		2,846,923	1,838,037
Income tax and social contribution
Current		(416,687)	(522,550)
Deferred		(258,974)	51,384
Deferred income tax and social contribution		(675,661)	(471,166)
NET INCOME FROM CONTINUING OPERATIONS		2,171,262	1,366,871
Discontinued operations
Net income (loss) from discontinued operations		(108,393)	77,133
NET INCOME		2,062,869	1,444,004
Companhia Paranaense de Energia - Copel [member]
Operating revenues (expenses)
General and administrative expenses	(79,762)
Other operational income (expenses)	(24,423)
Result of equity in investees	3,551,254
Total operational expenses / income	3,447,069
Net income from continuing operations	3,447,069
Financial income (expenses)
Financial income	335,485
Financial expenses	(86,076)
Total financial results	249,409
Operating profit	3,696,478
Income tax and social contribution
Deferred	127,503
Deferred income tax and social contribution	127,503
NET INCOME FROM CONTINUING OPERATIONS	3,823,981
Discontinued operations
Net income (loss) from discontinued operations	80,221
NET INCOME	R$ 3904202
Basic and diluted net earning per share attributed to controlling shareholders - continuing operations - expressed in Brazilian Reais
Shares	R$ 1.3343
Basic and diluted net earning per share attributed to controlling shareholders - expressed in Brazilian Reais
Basic and diluted earnings per share attributable to shareholders of parent company	1.36229
Companhia Paranaense de Energia - Copel [member] | Restated [Member]
Operating revenues (expenses)
General and administrative expenses		(59,907)	(67,292)
Other operational income (expenses)		1,244	11,696
Result of equity in investees		2,177,629	1,258,213
Total operational expenses / income		2,118,966	1,202,617
Net income from continuing operations		2,118,966	1,202,617
Financial income (expenses)
Financial income		209,679	301,729
Financial expenses		(235,033)	(238,355)
Total financial results		(25,354)	63,374
Operating profit		2,093,612	1,265,991
Income tax and social contribution
Current		(21,195)	(2,083)
Deferred		5,850	44,993
Deferred income tax and social contribution		(15,345)	42,910
NET INCOME FROM CONTINUING OPERATIONS		2,078,267	1,308,901
Discontinued operations
Net income (loss) from discontinued operations		(88,321)	98,162
NET INCOME		R$ 1989946	R$ 1407063
Basic and diluted net earning per share attributed to controlling shareholders - continuing operations - expressed in Brazilian Reais
Shares		R$ 0.72523	R$ 0.45683
Basic and diluted net earning per share attributed to controlling shareholders - expressed in Brazilian Reais
Basic and diluted earnings per share attributable to shareholders of parent company		0.6944	0.49109
Companhia Paranaense de Energia - Copel [member] | Class "A" preferred [member]
Basic and diluted net earning per share attributed to controlling shareholders - continuing operations - expressed in Brazilian Reais
Shares	1.76982
Basic and diluted net earning per share attributed to controlling shareholders - expressed in Brazilian Reais
Basic and diluted earnings per share attributable to shareholders of parent company	1.80062
Companhia Paranaense de Energia - Copel [member] | Class "A" preferred [member] | Restated [Member]
Basic and diluted net earning per share attributed to controlling shareholders - continuing operations - expressed in Brazilian Reais
Shares		0.89086	0.50251
Basic and diluted net earning per share attributed to controlling shareholders - expressed in Brazilian Reais
Basic and diluted earnings per share attributable to shareholders of parent company		0.8579	0.5402
Companhia Paranaense de Energia - Copel [member] | Class "B" preferred [member]
Basic and diluted net earning per share attributed to controlling shareholders - continuing operations - expressed in Brazilian Reais
Shares	1.46773
Basic and diluted net earning per share attributed to controlling shareholders - expressed in Brazilian Reais
Basic and diluted earnings per share attributable to shareholders of parent company	R$ 1.49852
Companhia Paranaense de Energia - Copel [member] | Class "B" preferred [member] | Restated [Member]
Basic and diluted net earning per share attributed to controlling shareholders - continuing operations - expressed in Brazilian Reais
Shares		0.79778	0.50251
Basic and diluted net earning per share attributed to controlling shareholders - expressed in Brazilian Reais
Basic and diluted earnings per share attributable to shareholders of parent company		R$ 0.76388	R$ 0.5402

42 Condensed individual finan_5

42 Condensed individual financial information of Companhia Paranaense de Energia - Copel (Details 2) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
CondensedUnconsolidatedFinancialInformationOfCompanhiaParanaenseDeEnergiaCopelLineItems [Line Items]
NET INCOME	R$ 3909750
Gain (losses) on actuarial liabilities
Post employment benefits	(271,345)
Taxes on other comprehensive income	92,190
Items that are or maybe reclassified to profit or loss
Total comprehensive income, net of taxes	(179,155)
TOTAL COMPREHENSIVE INCOME	3,730,595	R$ 1939685	R$ 1405644
Restated [Member]
CondensedUnconsolidatedFinancialInformationOfCompanhiaParanaenseDeEnergiaCopelLineItems [Line Items]
NET INCOME		2,062,869	1,444,004
Gain (losses) on actuarial liabilities
Post employment benefits		(186,628)	(58,354)
Taxes on other comprehensive income		63,444	19,994
Items that are or maybe reclassified to profit or loss
Total comprehensive income, net of taxes		(123,184)	(38,360)
TOTAL COMPREHENSIVE INCOME		1,939,685	1,405,644
Companhia Paranaense de Energia - Copel [member]
CondensedUnconsolidatedFinancialInformationOfCompanhiaParanaenseDeEnergiaCopelLineItems [Line Items]
NET INCOME	3,904,202
Gain (losses) on actuarial liabilities
Post employment benefits	(779)
Post employment benefits - equity	(178,434)
Taxes on other comprehensive income	265
Items that are or maybe reclassified to profit or loss
Total comprehensive income, net of taxes	(178,948)
TOTAL COMPREHENSIVE INCOME	R$ 3725254
Companhia Paranaense de Energia - Copel [member] | Restated [Member]
CondensedUnconsolidatedFinancialInformationOfCompanhiaParanaenseDeEnergiaCopelLineItems [Line Items]
NET INCOME		1,989,946	1,407,063
Gain (losses) on actuarial liabilities
Post employment benefits		(3,371)	(408)
Post employment benefits - equity		(120,358)	(38,245)
Taxes on other comprehensive income		1,146	139
Items that are or maybe reclassified to profit or loss
Subsidiary loss with interest variation		(4,874)
Total comprehensive income, net of taxes		(127,457)	(38,514)
TOTAL COMPREHENSIVE INCOME		R$ 1862489	R$ 1368549

42 Condensed individual finan_6

42 Condensed individual financial information of Companhia Paranaense de Energia - Copel (Details 3) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
CondensedUnconsolidatedFinancialInformationOfCompanhiaParanaenseDeEnergiaCopelLineItems [Line Items]
NET CASH GENERATED IN OPERATING ACTIVITIES	R$ 3940844
CASH FLOWS FROM INVESTMENT ACTIVITIES
Financial investments	(48,238)
Additions in investments	(72,439)
Capital reduction of investees	228
Additions to property, plant and equipment	(226,325)
Additions to intangible assets	(10,225)
NET CASH USED IN INVESTING ACTIVITIES	(1,667,571)
CASH FLOWS FROM FINANCING ACTIVITIES
Dividends and interest on own capital paid	(626,357)
NET CASH GENERATED FROM (USED IN) FINANCING ACTIVITIES	(1,715,113)
Cash and cash equivalents at the beginning of the period	2,941,727
Cash and cash equivalents at the end of the period	3,222,768	R$ 2941727
Companhia Paranaense de Energia - Copel [member]
CondensedUnconsolidatedFinancialInformationOfCompanhiaParanaenseDeEnergiaCopelLineItems [Line Items]
NET CASH GENERATED IN OPERATING ACTIVITIES	761,050	688,443	R$ 653230
CASH FLOWS FROM INVESTMENT ACTIVITIES
Financial investments	5,349	115,376	(124,254)
Loans and financing granted to related parties	(40,000)	(24,410)	(192,445)
Receipt of loans and financing granted to related parties	(7,015)	24,512	560,877
Additions in investments	(68,127)	(271,968)	(608,934)
Capital reduction of investees	228		45,000
Additions to property, plant and equipment	(1,800)	(285)	(267)
Additions to intangible assets	(1,045)	(271)	(3)
NET CASH USED IN INVESTING ACTIVITIES	(98,380)	(157,046)	(320,026)
CASH FLOWS FROM FINANCING ACTIVITIES
Issue of Debentures		500,000	600,000
Issue of loans with related parties	280,000	48,000
Amortization of principal - loans and financing	(38,500)	(115,500)	(77,000)
Amortization of principal - debentures	(300,000)	(853,400)	(333,300)
Amortization of loans obtained from related parties		(48,000)
Amortization of principal - Lease liabilities	(329)	(141)
Dividends and interest on own capital paid	(586,445)	(352,055)	(264,734)
NET CASH GENERATED FROM (USED IN) FINANCING ACTIVITIES	(645,274)	(821,096)	(75,034)
Changes in cash and cash equivalents	17,396	(289,699)	258,170
Cash and cash equivalents at the beginning of the period	25,304	315,003	56,833
Cash and cash equivalents at the end of the period	R$ 42700	R$ 25304	R$ 315003

42 Condensed individual finan_7

42 Condensed individual financial information of Companhia Paranaense de Energia - Copel (Details 4) - Companhia Paranaense de Energia - Copel [member] - BRL (R$) R$ in Thousands		Dec. 31, 2020	Dec. 31, 2019
CondensedUnconsolidatedFinancialInformationOfCompanhiaParanaenseDeEnergiaCopelLineItems [Line Items]
Related parties assets		R$ 180635	R$ 115022
Related parties liabilities		289,501	841
Copel Distribuicao [member]
CondensedUnconsolidatedFinancialInformationOfCompanhiaParanaenseDeEnergiaCopelLineItems [Line Items]
Related parties assets	[1]	140,337	108,983
Elejor Advance [member]
CondensedUnconsolidatedFinancialInformationOfCompanhiaParanaenseDeEnergiaCopelLineItems [Line Items]
Related parties liabilities		833	696
Investees and Subsidiaries - Structure Sharing [member]
CondensedUnconsolidatedFinancialInformationOfCompanhiaParanaenseDeEnergiaCopelLineItems [Line Items]
Related parties assets		6,726
Related parties liabilities		5,851	R$ 145
UEG Araucaria - mutual [member]
CondensedUnconsolidatedFinancialInformationOfCompanhiaParanaenseDeEnergiaCopelLineItems [Line Items]
Related parties assets		R$ 33572
[1]	Copel DIS - Financing transferred - STN

42 Condensed individual finan_8

42 Condensed individual financial information of Companhia Paranaense de Energia - Copel (Details 5) - Companhia Paranaense de Energia - Copel [member] - BRL (R$) R$ in Thousands		Dec. 31, 2020	Dec. 31, 2019
CondensedUnconsolidatedFinancialInformationOfCompanhiaParanaenseDeEnergiaCopelLineItems [Line Items]
Investments		R$ 18652792	R$ 17135474
Copel Geracao e Transmissao [member]
CondensedUnconsolidatedFinancialInformationOfCompanhiaParanaenseDeEnergiaCopelLineItems [Line Items]
Investments		10,732,734	9,749,705
Copel Distribuicao [member]
CondensedUnconsolidatedFinancialInformationOfCompanhiaParanaenseDeEnergiaCopelLineItems [Line Items]
Investments		7,212,915	6,012,246
Copel Telecomunicacoes [member]
CondensedUnconsolidatedFinancialInformationOfCompanhiaParanaenseDeEnergiaCopelLineItems [Line Items]
Investments		757,799	710,128
Copel TEL - Reclassification [member]
CondensedUnconsolidatedFinancialInformationOfCompanhiaParanaenseDeEnergiaCopelLineItems [Line Items]
Investments	[1]	(758,742)
Copel Energia [member]
CondensedUnconsolidatedFinancialInformationOfCompanhiaParanaenseDeEnergiaCopelLineItems [Line Items]
Investments		356,922	243,123
Compagas [member]
CondensedUnconsolidatedFinancialInformationOfCompanhiaParanaenseDeEnergiaCopelLineItems [Line Items]
Investments		252,481	284,747
UEG Araucaria [member]
CondensedUnconsolidatedFinancialInformationOfCompanhiaParanaenseDeEnergiaCopelLineItems [Line Items]
Investments		48,355	64,094
Other investments [member]
CondensedUnconsolidatedFinancialInformationOfCompanhiaParanaenseDeEnergiaCopelLineItems [Line Items]
Investments		R$ 50328	R$ 71431
[1]	Reclassification to Assets classified as held for sale.

42 Condensed individual finan_9

42 Condensed individual financial information of Companhia Paranaense de Energia - Copel (Details 6) - Companhia Paranaense de Energia - Copel [member] - BRL (R$) R$ in Thousands	Dec. 31, 2020	Dec. 31, 2019
CondensedUnconsolidatedFinancialInformationOfCompanhiaParanaenseDeEnergiaCopelAbstractLineItems [Line Items]
Dividends receivable	R$ 1290114	R$ 760719
Other investments [member]
CondensedUnconsolidatedFinancialInformationOfCompanhiaParanaenseDeEnergiaCopelAbstractLineItems [Line Items]
Dividends receivable	399	425
Voltalia [member]
CondensedUnconsolidatedFinancialInformationOfCompanhiaParanaenseDeEnergiaCopelAbstractLineItems [Line Items]
Dividends receivable	1,032	1,032
Copel Geracao e Transmissao [member]
CondensedUnconsolidatedFinancialInformationOfCompanhiaParanaenseDeEnergiaCopelAbstractLineItems [Line Items]
Dividends receivable	769,108	464,450
Copel Distribuicao [member]
CondensedUnconsolidatedFinancialInformationOfCompanhiaParanaenseDeEnergiaCopelAbstractLineItems [Line Items]
Dividends receivable	440,368	266,050
Copel Comercializacao [member]
CondensedUnconsolidatedFinancialInformationOfCompanhiaParanaenseDeEnergiaCopelAbstractLineItems [Line Items]
Dividends receivable	29,803	88
Compagas [member]
CondensedUnconsolidatedFinancialInformationOfCompanhiaParanaenseDeEnergiaCopelAbstractLineItems [Line Items]
Dividends receivable	43,164	22,531
UEG Araucaria [member]
CondensedUnconsolidatedFinancialInformationOfCompanhiaParanaenseDeEnergiaCopelAbstractLineItems [Line Items]
Dividends receivable	R$ 6143	R$ 6143

42 Condensed individual fina_10

42 Condensed individual financial information of Companhia Paranaense de Energia - Copel (Details 7) - BRL (R$) R$ in Thousands	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
CondensedUnconsolidatedFinancialInformationOfCompanhiaParanaenseDeEnergiaCopelLineItems [Line Items]
Reserve for risks	R$ 1555704	R$ 1606713	R$ 1664773
Companhia Paranaense de Energia - Copel [member] | Regulatory [member]
CondensedUnconsolidatedFinancialInformationOfCompanhiaParanaenseDeEnergiaCopelLineItems [Line Items]
Reserve for risks	21,373	17,357
Companhia Paranaense de Energia - Copel [member] | Labor [member]
CondensedUnconsolidatedFinancialInformationOfCompanhiaParanaenseDeEnergiaCopelLineItems [Line Items]
Reserve for risks	2,466	1,957
Companhia Paranaense de Energia - Copel [member] | Tax Claim [member]
CondensedUnconsolidatedFinancialInformationOfCompanhiaParanaenseDeEnergiaCopelLineItems [Line Items]
Reserve for risks	136,553	150,529
Companhia Paranaense de Energia - Copel [member] | Civil [member]
CondensedUnconsolidatedFinancialInformationOfCompanhiaParanaenseDeEnergiaCopelLineItems [Line Items]
Reserve for risks	R$ 163940	R$ 150529

42 Condensed individual fina_11

42 Condensed individual financial information of Companhia Paranaense de Energia - Copel (Details 8) - Companhia Paranaense de Energia - Copel [member] - BRL (R$) R$ in Thousands	Dec. 31, 2020	Dec. 31, 2019
CondensedUnconsolidatedFinancialInformationOfCompanhiaParanaenseDeEnergiaCopelLineItems [Line Items]
Restricted net assets	R$ 18197350	R$ 16120548
Copel geracao e transmissao s.a. [member]
CondensedUnconsolidatedFinancialInformationOfCompanhiaParanaenseDeEnergiaCopelLineItems [Line Items]
Restricted net assets	10,732,735	9,749,705
Centrais Eletricas Rio Jordao - Elejor [member]
CondensedUnconsolidatedFinancialInformationOfCompanhiaParanaenseDeEnergiaCopelLineItems [Line Items]
Restricted net assets	13,490	42,859
UEG Araucaria Ltda. [member]
CondensedUnconsolidatedFinancialInformationOfCompanhiaParanaenseDeEnergiaCopelLineItems [Line Items]
Restricted net assets	238,211	315,740
Copel Distribuicao S.A. [member]
CondensedUnconsolidatedFinancialInformationOfCompanhiaParanaenseDeEnergiaCopelLineItems [Line Items]
Restricted net assets	R$ 7212914	R$ 6012244

42 Condensed individual fina_12

42 Condensed individual financial information of Companhia Paranaense de Energia - Copel (Details 9) R$ in Thousands	Dec. 31, 2020BRL (R$)
CondensedUnconsolidatedFinancialInformationOfCompanhiaParanaenseDeEnergiaCopelLineItems [Line Items]
Expected undiscounted settlement values of the liabilities	R$ 1645275
Less Than 1 Month [member]
CondensedUnconsolidatedFinancialInformationOfCompanhiaParanaenseDeEnergiaCopelLineItems [Line Items]
Expected undiscounted settlement values of the liabilities	306,823
1 To 3 Month [member]
CondensedUnconsolidatedFinancialInformationOfCompanhiaParanaenseDeEnergiaCopelLineItems [Line Items]
Expected undiscounted settlement values of the liabilities	131,548
3 Months To 1 Year [member]
CondensedUnconsolidatedFinancialInformationOfCompanhiaParanaenseDeEnergiaCopelLineItems [Line Items]
Expected undiscounted settlement values of the liabilities	416,075
1 To 5 Years [member]
CondensedUnconsolidatedFinancialInformationOfCompanhiaParanaenseDeEnergiaCopelLineItems [Line Items]
Expected undiscounted settlement values of the liabilities	790,829
Loans and Financing [member]
CondensedUnconsolidatedFinancialInformationOfCompanhiaParanaenseDeEnergiaCopelLineItems [Line Items]
Expected undiscounted settlement values of the liabilities	811,453
Loans and Financing [member] | 1 To 3 Month [member]
CondensedUnconsolidatedFinancialInformationOfCompanhiaParanaenseDeEnergiaCopelLineItems [Line Items]
Expected undiscounted settlement values of the liabilities	131,547
Loans and Financing [member] | 3 Months To 1 Year [member]
CondensedUnconsolidatedFinancialInformationOfCompanhiaParanaenseDeEnergiaCopelLineItems [Line Items]
Expected undiscounted settlement values of the liabilities	400,876
Loans and Financing [member] | 1 To 5 Years [member]
CondensedUnconsolidatedFinancialInformationOfCompanhiaParanaenseDeEnergiaCopelLineItems [Line Items]
Expected undiscounted settlement values of the liabilities	279,030
Debentures [member]
CondensedUnconsolidatedFinancialInformationOfCompanhiaParanaenseDeEnergiaCopelLineItems [Line Items]
Expected undiscounted settlement values of the liabilities	830,638
Debentures [member] | Less Than 1 Month [member]
CondensedUnconsolidatedFinancialInformationOfCompanhiaParanaenseDeEnergiaCopelLineItems [Line Items]
Expected undiscounted settlement values of the liabilities	303,640
Debentures [member] | 3 Months To 1 Year [member]
CondensedUnconsolidatedFinancialInformationOfCompanhiaParanaenseDeEnergiaCopelLineItems [Line Items]
Expected undiscounted settlement values of the liabilities	15,199
Debentures [member] | 1 To 5 Years [member]
CondensedUnconsolidatedFinancialInformationOfCompanhiaParanaenseDeEnergiaCopelLineItems [Line Items]
Expected undiscounted settlement values of the liabilities	511,799
Suppliers [member]
CondensedUnconsolidatedFinancialInformationOfCompanhiaParanaenseDeEnergiaCopelLineItems [Line Items]
Expected undiscounted settlement values of the liabilities	3,184
Suppliers [member] | Less Than 1 Month [member]
CondensedUnconsolidatedFinancialInformationOfCompanhiaParanaenseDeEnergiaCopelLineItems [Line Items]
Expected undiscounted settlement values of the liabilities	3,183
Suppliers [member] | 1 To 3 Month [member]
CondensedUnconsolidatedFinancialInformationOfCompanhiaParanaenseDeEnergiaCopelLineItems [Line Items]
Expected undiscounted settlement values of the liabilities	R$ 1

42 Condensed individual fina_13

42 Condensed individual financial information of Companhia Paranaense de Energia - Copel (Details Narrative) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
CondensedUnconsolidatedFinancialInformationOfCompanhiaParanaenseDeEnergiaCopelLineItems [Line Items]
Recivable	R$ 710798	R$ 777651	R$ 609219
Consolidated subsidiaries [member]
CondensedUnconsolidatedFinancialInformationOfCompanhiaParanaenseDeEnergiaCopelLineItems [Line Items]
Recivable	661,639	65,083	588,540
Unconsolidated investees [member]
CondensedUnconsolidatedFinancialInformationOfCompanhiaParanaenseDeEnergiaCopelLineItems [Line Items]
Recivable	R$ 49159	R$ 126821	R$ 20679