Atlantica Sustainable Infrastructure (AY) 20-F 28 Feb 20 2019 FY Annual report (foreign) Financial data

Document and Entity Information

Document and Entity Information	12 Months Ended
	Dec. 31, 2019shares
Cover [Abstract]
Entity Registrant Name	Atlantica Yield plc
Entity Central Index Key	0001601072
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Shell Company	false
Entity Filer Category	Large Accelerated Filer
Entity Emerging Growth Company	false
Entity Common Stock, Shares Outstanding	101,601,666
Document Type	20-F
Amendment Flag	false
Document Period End Date	Dec. 31, 2019
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	FY
Document Transition Report	false
Document Annual Report	true
Document Shell Company Report	false

Consolidated statements of fina

Consolidated statements of financial position - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Non-current assets
Contracted concessional assets	$ 8,161,129	$ 8,549,181
Investments carried under the equity method	139,925	53,419
Other receivables accounts	88,405	41,099
Derivative assets	3,182	11,571
Financial investments	91,587	52,670
Deferred tax assets	147,966	136,066
Total non-current assets	8,540,607	8,791,336
Current assets
Inventories	20,268	18,924
Trade receivables	242,008	163,856
Credits and other receivables	75,560	72,539
Trade and other receivables	317,568	236,395
Financial investments	218,577	240,834
Cash and cash equivalents	562,795	631,542
Total current assets	1,119,208	1,127,695
Total assets	9,659,815	9,919,031
Equity attributable to the Company
Share capital	10,160	10,022
Parent company reserves	1,900,800	2,029,940
Other reserves	73,797	95,011
Accumulated currency translation differences	(90,824)	(68,315)
Retained earnings	(385,457)	(449,274)
Non-controlling interest	206,380	138,728
Total equity	1,714,856	1,756,112
Non-current liabilities
Long-term corporate debt	695,085	415,168
Borrowings	3,351,780	4,081,093
Notes and bonds	718,129	745,566
Long-term project debt	4,069,909	4,826,659
Grants and other liabilities	1,641,752	1,658,126
Related parties	17,115	33,675
Derivative liabilities	298,744	279,152
Deferred tax liabilities	248,996	211,000
Total non-current liabilities	6,971,601	7,423,780
Current liabilities
Short-term corporate debt	28,706	268,905
Borrowings	754,135	233,214
Notes and bonds	28,304	31,241
Short-term project debt	782,439	264,455
Trade payables and other current liabilities	128,062	192,033
Income and other tax payables	34,151	13,746
Total current liabilities	973,358	739,139
Total equity and liabilities	$ 9,659,815	$ 9,919,031

Consolidated income statements

Consolidated income statements - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Consolidated income statements [Abstract]
Revenue	$ 1,011,452	$ 1,043,822	$ 1,008,381
Other operating income	93,774	132,557	80,844
Employee benefit expenses	(32,246)	(15,130)	(18,854)
Depreciation, amortization, and impairment charges	(310,755)	(362,697)	(310,960)
Other operating expenses	(261,776)	(310,642)	(301,444)
Operating profit	500,449	487,910	457,967
Financial income	4,121	36,444	1,007
Financial expense	(407,990)	(425,019)	(463,717)
Net exchange differences	2,674	1,597	(4,092)
Other financial income/(expense), net	(1,153)	(8,235)	18,434
Financial expense, net	(402,348)	(395,213)	(448,368)
Share of profit/(loss) of associates carried under the equity method	7,457	5,231	5,351
Profit/(loss) before income tax	105,558	97,928	14,950
Income tax	(30,950)	(42,659)	(119,837)
Profit/(loss) for the year	74,608	55,269	(104,887)
Loss/(profit) attributable to non-controlling interests	(12,473)	(13,673)	(6,917)
Profit/(loss) for the year attributable to the Company	$ 62,135	$ 41,596	$ (111,804)
Weighted average number of ordinary shares outstanding (in shares)	101,063	100,217	100,217
Basic and diluted earnings per share (in dollars per share)	$ 0.61	$ 0.42	$ (1.12)

Consolidated statements of comp

Consolidated statements of comprehensive income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Consolidated statements of comprehensive income [Abstract]
Profit/(loss) for the year	$ 74,608	$ 55,269	$ (104,887)
Items that may be subject to transfer to income statement
Change in fair value of cash flow hedges	(81,713)	(40,220)	(28,535)
Currency translation differences	(22,284)	(57,628)	121,924
Tax effect	20,088	6,195	4,426
Net income/(expenses) recognized directly in equity	(83,909)	(91,653)	97,815
Cash flow hedges	55,765	67,519	70,953
Tax effect	(13,941)	(16,880)	(17,738)
Transfers to income statement	41,824	50,639	53,215
Other comprehensive income/(loss)	(42,085)	(41,014)	151,030
Total comprehensive income/(loss) for the year	32,523	14,255	46,143
Total comprehensive (income)/loss attributable to non-controlling interest	(12,429)	(11,954)	(14,773)
Total comprehensive income/(loss) attributable to the Company	$ 20,094	$ 2,301	$ 31,370

Consolidated statements of chan

Consolidated statements of changes in equity - USD ($) $ in Thousands	Total	Total Equity Attributable to Company [Member]	Share Capital [Member]	Parent Company Reserves [Member]	Other Reserves [Member]	Retained Earnings [Member]	Accumulated Currency Translation Differences [Member]	Non-controlling Interest [Member]
Balance, beginning of period at Dec. 31, 2016	$ 1,959,111	$ 1,832,716	$ 10,022	$ 2,268,457	$ 52,797	$ (365,410)	$ (133,150)	$ 126,395
Profit/(loss) for the year after taxes	(104,887)	(111,804)	0	0	0	(111,804)	0	6,917
Change in fair value of cash flow hedges	42,418	41,242	0	0	41,242	0	0	1,176
Currency translation differences	121,924	115,003	0	0	0	0	115,003	6,921
Tax effect	(13,312)	(13,071)	0	0	(13,071)	0	0	(241)
Other comprehensive income/(loss)	151,030	143,174	0	0	28,171	0	115,003	7,856
Total comprehensive income/(loss) for the year	46,143	31,370	0	0	28,171	(111,804)	115,003	14,773
Dividend distribution	(109,801)	(105,228)	0	(105,228)	0	0	0	(4,573)
Balance, end of period (Application of New Accounting Standards [Member]) at Dec. 31, 2017	(10,486)	(10,486)	0	0	1,326	(11,812)	0	0
Balance, end of period (Restatement [Member]) at Dec. 31, 2017	1,884,967	1,748,372	10,022	2,163,229	82,294	(489,026)	(18,147)	136,595
Balance, end of period at Dec. 31, 2017	1,895,453	1,758,858	10,022	2,163,229	80,968	(477,214)	(18,147)	136,595
Profit/(loss) for the year after taxes	55,269	41,596	0	0	0	41,596	0	13,673
Change in fair value of cash flow hedges	27,299	21,238	0	0	21,474	(236)	0	6,061
Currency translation differences	(57,628)	(50,168)	0	0	0	0	(50,168)	(7,460)
Tax effect	(10,685)	(10,365)	0	0	(8,757)	(1,608)	0	(320)
Other comprehensive income/(loss)	(41,014)	(39,295)	0	0	12,717	(1,844)	(50,168)	(1,719)
Total comprehensive income/(loss) for the year	14,255	2,301	0	0	12,717	39,752	(50,168)	11,954
Dividend distribution	(143,110)	(133,289)	0	(133,289)	0	0	0	(9,821)
Balance, end of period at Dec. 31, 2018	1,756,112	1,617,384	10,022	2,029,940	95,011	(449,274)	(68,315)	138,728
Profit/(loss) for the year after taxes	74,608	62,135	0	0	0	62,135	0	12,473
Change in fair value of cash flow hedges	(25,948)	(26,265)	0	0	(27,947)	1,682	0	317
Currency translation differences	(22,284)	(22,509)	0	0	0	0	(22,509)	225
Tax effect	6,147	6,733	0	0	6,733	0	0	(586)
Other comprehensive income/(loss)	(42,085)	(42,041)	0	0	(21,214)	1,682	(22,509)	(44)
Total comprehensive income/(loss) for the year	32,523	20,094	0	0	(21,214)	63,817	(22,509)	12,429
Capital reduction	(2,688)							(2,688)
Capital increase (Note 13)	30,000	30,000	138	29,862
Changes in the scope of consolidation (Note 5)	92,303							92,303
Dividend distribution	(193,394)	(159,002)	0	(159,002)	0	0	0	(34,392)
Balance, end of period at Dec. 31, 2019	$ 1,714,856	$ 1,508,476	$ 10,160	$ 1,900,800	$ 73,797	$ (385,457)	$ (90,824)	$ 206,380

Consolidated cash flow statemen

Consolidated cash flow statements - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019		Dec. 31, 2018		Dec. 31, 2017
Consolidated cash flows statements [Abstract]
Profit/(loss) for the year	$ 74,608		$ 55,269		$ (104,887)
Non-monetary adjustments
Depreciation, amortization and impairment charges	310,755		362,697		310,960
Financial (income)/expenses	405,634		396,411		443,517
Fair value (gains)/losses on derivative financial instruments	(613)		399		759
Shares of (profits)/losses from associates	(7,457)		(5,231)		(5,351)
Income tax	30,950		42,659		119,837
Changes in consolidation and other non-monetary items	(37,432)		(99,280)		(20,882)
II. Profit for the year adjusted by non monetary items	776,445		752,924		743,953
Variations in working capital
Inventories	(1,343)		(1,991)		(2,548)
Trade and other receivables	(71,505)		5,564		(23,799)
Trade payables and other current liabilities	(36,533)		(4,898)		22,474
Financial investments and other current assets/liabilities	(3,970)		(17,019)		(4,924)
III. Variations in working capital	(113,351)		(18,344)		(8,797)
Income tax received/(paid)	(23)		(12,525)		(4,779)
Interest received	10,135		6,726		4,139
Interest paid	(309,625)		(327,738)		(348,893)
A. Net cash provided by/(used in) operating activities	363,581		401,043		385,623
Investments in entities under the equity method	30,443		4,432		3,003
Investments in contracted concessional assets	22,009	[1]	68,048	[1]	30,058
Other non-current assets/liabilities	2,703		(16,668)		8,183
(Acquisitions)/sales of subsidiaries and other financial instruments	(173,366)		(70,672)		30,124
B. Net cash (used in)/provided by investing activities	(118,211)		(14,860)		71,368
Proceeds from Project & Corporate debt	358,826		123,767		296,398
Repayment of Project & Corporate debt	(603,070)		(385,964)		(613,242)
Dividends paid to Company's shareholders	(159,002)		(133,289)		(94,845)
Dividends paid to Non-controlling interests	(29,239)		(9,745)		(4,638)
Non-controlling interests capital contribution	92,303		0		0
Capital increase	30,000		0		0
C. Net cash provided by/(used in) financing activities	(310,182)		(405,231)		(416,327)
Net increase/(decrease) in cash and cash equivalents	(64,812)		(19,048)		40,664
Cash and cash equivalents at beginning of the year	631,542		669,387		594,811
Translation differences cash and cash equivalents	(3,935)		(18,797)		33,912
Cash and cash equivalents at the end of the year	$ 562,795		$ 631,542		$ 669,387
[1]	Includes proceeds for $22.2 million, $72.6 million and $42.5 million in 2019, 2018 and 2017 respectively (Note 6).

Consolidated cash flow statem_2

Consolidated cash flow statements (Parenthetical) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Consolidated cash flows statements [Abstract]
Proceeds from investments in contracted concessional assets	$ 22.2	$ 72.6	$ 42.5

Nature of the business

Nature of the business	12 Months Ended
	Dec. 31, 2019
Nature of the business [Abstract]
Nature of the business	Note 1.- Nature of the business Atlantica Yield plc (“Atlantica” or the “Company”) was incorporated in England and Wales as a private limited company on December 17, 2013 under the name Abengoa Yield Limited. On March 19, 2014, the Company was re-registered as a public limited company, under the name Abengoa Yield plc. On May 13, 2016, the change of the Company´s registered name to Atlantica Yield plc was filed with the Registrar of Companies in the United Kingdom. Atlantica is a sustainable total return infrastructure company that owns, manages and acquires renewable energy, efficient natural gas, electric transmission lines and water assets focused on North America (the United States, Mexico and Canada), South America (Peru, Chile and Uruguay) and EMEA (Spain, Algeria and South Africa). Atlantica’s shares began trading on the NASDAQ Global Select Market under the symbol “ABY” on June 13, 2014. The symbol changed to “AY” on November 11, 2017. On March 9, 2018 and on November 27, 2018, Algonquin Power & Utilities (“Algonquin”) announced that it completed the acquisition from Abengoa S.A, (“Abengoa”) of a 25% and 16.47% equity interest in Atlantica, respectively. Algonquin is the largest shareholder of the Company and currently owns a 44.2% stake in Atlantica. Algonquin’s shareholding in Atlantica may be increased up to a 48.5% without any change in corporate governance. Algonquin’s voting rights and rights to appoint directors are limited to a 41.5% and the additional 7% would vote replicating non-Algonquin’s shareholders vote. During 2018, the Company closed the following acquisitions: a 100% stake in a 4 MW hydroelectric power plant in Peru (“Mini-Hydro”), a 5% stake in a natural gas transportation in Mexico (Pemex Transportation System or “PTS”), a 100% stake in a 50 MW on-shore wind plant in Uruguay (“Melowind”), a 66kV transmission line in operation in Chile (“Chile TL3”) and a transmission line in Peru, which is an expansion of ATN (“ATN Expansion 1”). In January 2019, the Company entered into an agreement with Abengoa under the Abengoa ROFO Agreement for the acquisition of Befesa Agua Tenes, a holding company which owns a 51% stake in Tenes, a water desalination plant in Algeria, similar in several aspects to Skikda and Honaine plants. The price agreed for the equity value was $24.5 million, of which $19.9 million were paid in January 2019 as an advanced payment. Closing of the acquisition was subject to conditions precedent, including approval by the Algerian administration. The conditions precedent set forth in the share purchase agreement were not fulfilled as of September 30, 2019. Therefore, in accordance with the terms of the share purchase agreement the advanced payment has been converted into a secured loan to be reimbursed by Befesa Agua Tenes, together with 12% per annum interest, through a full cash-sweep of all the dividends generated to be received from the asset. These dividends would be guaranteed by a right of usufruct over the economic rights and certain political rights and a pledge over the shares of Befesa Agua Tenes, granted by Abengoa to the Company. The share purchase agreement requires that the repayment occurs no later than September 30, 2031. In October 2019 the Company received a first payment of $7.8 million through the cash sweep mechanism. On April 15, 2019, the Company entered into an agreement to acquire a 30% stake in Monterrey, a 142 MW gas-fired engine facility including 130 MW installed capacity and 12 MW battery capacity (“Monterrey”). The acquisition was closed on August 2, 2019, after conditions precedent were fulfilled, and the Company paid $42 million for the total investment. The asset, located in Mexico, has been in operation since 2018 and represents the first investment in electric batteries for the Company. It has a U.S. dollar-denominated 20-year PPA with two international large corporations engaged in the car manufacturing industry as well as a 20-year contract for the natural gas transportation with a U.S. energy company. The PPA also includes price escalation factors. The asset is the sole electricity supplier for the off-takers, it has no commodity risk and also has the possibility to sell excess energy to the North-East region of the country. The Company also entered into a ROFO agreement with the seller of the shares for the remaining 70% stake in the asset. On May 9, 2019, the Company entered into a partnership agreement with Algonquin, investing $4.9 million in the equity of a wind farm, Amherst Island, with a 75 MW installed capacity, owned and operated by Algonquin in Canada. On August 2, 2019, the Company closed the acquisition of ASI Operations LLC (“ASI Ops”), the company that performs the operation and maintenance services to Solana and Mojave plants. The consideration paid was $6 million. On October 22, 2019, the Company closed the acquisition of ATN Expansion 2 from Enel Green Power Perú, for a total equity investment of approximately $20 million, controlling the asset from this date. Transfer of the concession agreement is pending authorization from the Ministry of Energy in Peru. If this authorization were not to be obtained within an eight-month period from the acquisition date, the transaction would be reversed with no penalties to Atlantica. Enel Green Power Perú issued a bank guarantee to face this potential repayment obligation to Atlantica. The following table provides an overview of the main concessional assets the Company owned or had an interest in as of December 31, 2019: Assets Type Ownership Location Currency (8) Capacity (Gross) Counterparty Credit Ratings (9) COD* Contract Years Left (13) Solana Renewable (Solar) 100% Class B (1) Arizona (USA) USD 280 MW A-/A2/A- 2013 24 Mojave Renewable (Solar) 100% California (USA) USD 280 MW D/WR/WD 2014 20 Solaben 2 & 3 Renewable (Solar) 70% (2) Spain Euro 2x50 MW A/Baa1/A- 2012 18/17 Solacor 1 & 2 Renewable (Solar) 87% (3) Spain Euro 2x50 MW A/Baa1/A- 2012 17/17 PS10/PS20 Renewable (Solar) 100% Spain Euro 31 MW A/Baa1/A- 2007& 2009 12/14 Helioenergy 1 & 2 Renewable (Solar) 100% Spain Euro 2x50 MW A/Baa1/A- 2011 17/17 Helios 1 & 2 Renewable (Solar) 100% Spain Euro 2x50 MW A/Baa1/A- 2012 18/18 Solnova 1, 3 & 4 Renewable (Solar) 100% Spain Euro 3x50 MW A/Baa1/A- 2010 15/15/16 Solaben 1 & 6 Renewable (Solar) 100% Spain Euro 2x50 MW A/Baa1/A- 2013 19/19 Kaxu Renewable (Solar) 51% (4) South Africa Rand 100 MW BB/Baa3/ BB+ (10) 2015 15 Palmatir Renewable (Wind) 100% Uruguay USD 50 MW BBB/Baa2/BBB- (11) 2014 14 Cadonal Renewable (Wind) 100% Uruguay USD 50 MW BBB/Baa2/BBB- (11) 2014 15 ACT Efficient natural gas 100% Mexico USD 300 MW BBB+/ Baa3/BB+ 2013 13 Monterrey Efficient natural gas 30% Mexico USD 142 MW Not rated 2018 19 ATN (12) Transmission line 100% Peru USD 379 miles BBB+/A3/BBB+ 2011 21 ATS Transmission line 100% Peru USD 569 miles BBB+/A3/BBB+ 2014 24 ATN 2 Transmission line 100% Peru USD 81 miles Not rated 2015 13 Quadra 1 Transmission line 100% Chile USD 49 miles Not rated 2014 15 Quadra 2 Transmission line 100% Chile USD 32 miles Not rated 2014 15 Palmucho Transmission line 100% Chile USD 6 miles BBB+/Baa2/ BBB+ 2007 18 Chile TL3 Transmission line 100% Chile USD 50 miles A+/A1/A 1993 Regulated Skikda Water 34.2%(5) Algeria USD 3.5 M ft3/day Not rated 2009 14 Honaine Water 25.5%(6) Algeria USD 7 M ft3/ day Not rated 2012 18 Seville PV Renewable (Solar) 80%(7) Spain Euro 1 MW A/Baa1/A- 2006 16 Melowind Renewable (Wind) 100% Uruguay USD 50MW BBB/Baa2/BBB- 2015 16 Mini-Hydro Renewable (Hydraulic) 100% Peru USD 4 MW BBB+/A3/BBB+ 2012 13 (1) On September 30, 2013, Liberty Interactive Corporation agreed to invest $300 million in Class A shares of ASO Holdings Company LLC, the holding company of Solana, in exchange for a share of the dividends and the taxable losses generated by Solana. (2) Itochu Corporation, a Japanese trading company, holds 30% of the shares in each of Solaben 2 and Solaben 3. (3) JGC, a Japanese engineering company, holds 13% of the shares in each of Solacor 1 and Solacor 2. (4) Kaxu is owned by the Company (51%), Industrial Development Corporation of South Africa (29%) and Kaxu Community Trust (20%). (5) Algerian Energy Company, SPA owns 49% of Skikda and Sacyr Agua, S.L. owns the remaining 16.83%. (6) Algerian Energy Company, SPA owns 49% of Honaine and Sacyr Agua, S.L. owns the remaining 25.5%. (7) Instituto para la Diversificación y Ahorro de la Energía (“Idae”), a Spanish state owned company, holds 20% of the shares in Seville PV. (8) Certain contracts denominated in U.S. dollars are payable in local currency. (9) Reflects the counterparty’s credit ratings issued by Standard & Poor’s Ratings Services, or S&P, Moody’s Investors Service Inc., or Moody’s, and Fitch Ratings Ltd, or Fitch. (10) Refers to the credit rating of the Republic of South Africa. The offtaker is Eskom, which is a state-owned utility company in South Africa. (11) Refers to the credit rating of Uruguay, as UTE (Administración Nacional de Usinas y Transmisoras Eléctricas) is unrated. (12) Including the acquisition of ATN Expansion 1 & 2. (13) As of December 31, 2019. (*) Commercial Operation Date. The project financing arrangement of Kaxu contains cross-default provisions related to Abengoa such that debt defaults by Abengoa, subject to certain threshold amounts and/or a restructuring process, could trigger a default under the Kaxu project financing arrangement. In March 2017, Atlantica obtained a waiver in its Kaxu project financing arrangement which waives any potential cross-defaults with Abengoa up to that date, but it does not cover potential future cross-default events. As of December 31, 2019, the Company is not aware of the existence of any cross-default events with Abengoa. These consolidated financial statements were approved by the Board of Directors of the Company on February 26, 2020.

Significant accounting policies

Significant accounting policies	12 Months Ended
	Dec. 31, 2019
Significant accounting policies [Abstract]
Significant accounting policies	Note 2.- Significant accounting policies 2.1 Basis of preparation These consolidated financial statements are presented in accordance with the International Financial Reporting Standards (“IFRS”) as issued by the International Accounting Standards Board (“IASB”). The consolidated financial statements are presented in U.S. dollars, which is the Company’s functional and presentation currency. Amounts included in these consolidated financial statements are all expressed in thousands of U.S. dollars, unless otherwise indicated. Application of new accounting standards a) Standards, interpretations and amendments effective from January 1, 2019 under IFRS-IASB, applied by the Company in the preparation of these consolidated financial statements: - IFRS 9 (Amendments to IFRS 9): Prepayment Features with Negative Compensation. This Standard is applicable for annual periods beginning on or after January 1, 2019 under IFRS-IASB, earlier application is permitted. - IAS 19 (Amendments to IAS 19): Plan Amendment, Curtailment or Settlement. This amendment is mandatory for annual periods beginning on or after January 1, 2019 under IFRS-IASB, earlier application is permitted. - IFRIC 23: Uncertainty over Income Tax Treatments. This Standard is applicable for annual periods beginning on or after January 1, 2019 under IFRS-IASB. - IAS 28 (Amendment). Long-term Interests in Associates and Joint Ventures. This amendment is mandatory for annual periods beginning on or after January 1, 2019 under IFRS-IASB, earlier application is permitted. - Amendments resulting from Annual Improvements 2015–2017 Cycle (remeasurement of previously held interest). This amendment is mandatory for annual periods beginning on or after January 1, 2019 under IFRS-IASB, The applications of these amendments have not had any material impact on these consolidated financial statements. b) Standards, interpretations and amendments published by the IASB that will be effective for periods beginning on or after January 1, 2020: - IFRS 17 ‘Insurance Contracts’. This Standard is applicable for annual periods beginning on or after January 1, 2021 under IFRS-IASB, earlier application is permitted. - IFRS 3 (Amendment). Definition of Business. This amendment is mandatory for annual periods beginning on or after January 1, 2020 under IFRS-IASB, earlier application is permitted. - IAS 1 and IAS 8 (Amendment). Definition of Material. This amendment is mandatory for annual periods beginning on or after January 1, 2020 under IFRS-IASB, earlier application is permitted. - IAS 1 (Amendment). Classification of liabilities. This amendment is mandatory for annual periods beginning on or after January 1, 2022 under IFRS-IASB. - IFRS 7 and IFRS 9. Amendments regarding pre-replacement issues in the context of the IBOR reform. These amendments are mandatory for annual periods beginning on or after January 1, 2020 under IFRS-IASB. - Amendments to References to the Conceptual Frameworks in IFRS Standards. This Standard is applicable for annual periods beginning on or after January 1, 2020 under IFRS-IASB. The Company does not anticipate any significant impact on the consolidated financial statements derived from the application of the new standards and amendments that will be effective for annual periods beginning on or after January 1, 2020, although it is currently still in the process of evaluating such application. 2.2. Principles to include and record companies in the consolidated financial statements Companies included in these consolidated financial statements are accounted for as subsidiaries as long as Atlantica has had control over them and are accounted for as investments under the equity method as long as Atlantica has had significant influence over them, in the periods presented. a) Controlled entities Control is achieved when the Company: · Has power over the investee; · Is exposed, or has rights, to variable returns from its involvement with the investee; and · Has the ability to use its power to affect its returns. The Company reassesses whether or not it controls an investee when facts and circumstances indicate that there are changes to one or more of the three elements of control listed above. The Company uses the acquisition method to account for business combinations of companies controlled by a third party. According to this method, identifiable assets acquired and liabilities and contingent liabilities assumed in a business combination are measured initially at their fair values at the acquisition date. Any contingent consideration is recognized at fair value at the acquisition date and subsequent changes in its fair value are recognized in accordance with IFRS 9 either in profit or loss or as a change to other comprehensive income. Acquisition related costs are expensed as incurred. The Company recognizes any non-controlling interest in the acquiree either at fair value or at the non-controlling interest’s proportionate share of the acquirer’s net assets on an acquisition by acquisition basis. All assets and liabilities between entities of the group, equity, income, expenses, and cash flows relating to transactions between entities of the group are eliminated in full. b) Investments accounted for under the equity method An associate is an entity over which the Company has significant influence. Significant influence is the power to participate in the financial and operating policy decisions of the investee but is not control or joint control over those policies. The results and assets and liabilities of associates are incorporated in these financial statements using the equity method of accounting. Under the equity method, an investment in an associate is initially recognized in the statement of financial position at cost and adjusted thereafter to recognize the Company share of the profit or loss and other comprehensive income of the associate. Controlled entities and associates included in these financial statements as of December 31, 2019 and 2018 are set out in appendices. 2.3. Contracted concessional assets and price purchase agreements Contracted concessional assets and price purchase agreements (PPAs) include fixed assets financed through project debt, related to service concession arrangements recorded in accordance with IFRIC 12, except for Palmucho, which is recorded in accordance with IFRS 16 and PS10, PS20, Mini-Hydro, Chile TL 3 and Seville PV, which are recorded as tangible assets in accordance with IAS 16. The infrastructures accounted for by the Company as concessions are related to the activities concerning electric transmission lines, solar electricity generation plants, cogeneration plants, wind farms and water plants. The useful life of these assets is approximately the same as the length of the concession arrangement. The infrastructure used in a concession can be classified as an intangible asset or a financial asset, depending on the nature of the payment entitlements established in the agreement. The application of IFRIC 12 requires extensive judgment in relation with, among other factors, (i) the identification of certain infrastructures and contractual agreements in the scope of IFRIC 12, (ii) the understanding of the nature of the payments in order to determine the classification of the infrastructure as a financial asset or as an intangible asset and (iii) the timing and recognition of the revenue from construction and concessionary activity. Under the terms of contractual arrangements within the scope of this interpretation, the operator shall recognize and measure revenue in accordance with IFRS 15 for the services it performs. a) Intangible asset The Company recognizes an intangible asset to the extent that it receives a right to charge final customers for the use of the infrastructure. This intangible asset is subject to the provisions of IAS 38 and is amortized linearly, taking into account the estimated period of commercial operation of the infrastructure which coincides with the concession period. Once the infrastructure is in operation, the treatment of income and expenses is as follows: · Revenues from the updated annual revenue for the contracted concession, as well as operations and maintenance services are recognized in each period according to IFRS 15 “Revenue from contracts with Customers”. · Operating and maintenance costs and general overheads and administrative costs are recorded in accordance with the nature of the cost incurred (amount due) in each period. · Financing costs are expensed as incurred. b) Financial asset The Company recognizes a financial asset when demand risk is assumed by the grantor, to the extent that the concession holder has an unconditional right to receive payments for the asset. This asset is recognized at the fair value of the construction services provided, considering upgrade services in accordance with IFRS 15, if any. The financial asset is subsequently recorded at amortized cost calculated according to the effective interest method. Revenue from operations and maintenance services is recognized in each period according to IFRS 15 “Revenue from contracts with Customers”. The income from managing and operating the asset resulting from the valuation at amortized cost is also recorded in revenue. Financing costs are expensed as incurred. According to IFRS 9, Atlantica recognises an allowance for expected credit losses (ECLs) for all debt instruments not held at fair value through profit or loss. ECLs are based on the difference between the contractual cash flows due in accordance with the contract and all the cash flows that the Company expects to receive. There are two main approaches to applying the ECL model according to IFRS 9: the general approach which involves a three stage approach, and the simplified approach, which can be applied to trade receivables, contract assets and lease receivables. Atlantica has elected to apply the simplified approach. Under this approach, there is no need to monitor for significant increases in credit risk and entities will be required to measure lifetime expected credit losses at the end of each reporting period. The key elements of the ECL calculations are the following: - the Probability of Default (“PD”) is an estimate of the likelihood of default over a given time horizon. Atlantica calculates PD based on Credit Default Swaps spreads (“CDS”); - the Exposure at Default (“EAD”) is an estimate of the exposure at a future default date; - the Loss Given Default (“LGD”) is an estimate of the loss arising in the case where a default occurs at a given time. It is based on the difference between the contractual cash flows due and those that the Company would expect to receive. It is expressed as a percentage of the EAD. c) Property, plant and equipment Property, plant and equipment includes property, plant and equipment of companies or project companies. Property, plant and equipment is measured at historical cost, including all expenses directly attributable to the acquisition, less depreciation and impairment losses, with the exception of land, which is presented net of any impairment losses. Once the infrastructure is in operation, the treatment of income and expenses is the same as the one described above for intangible asset. d) Right-of-use assets Main right of use agreements correspond to land rights. The Company recognizes right-of-use assets at the commencement date of the lease (i.e., the date the underlying asset is available for use). Right-of-use assets are measured at cost, less any accumulated depreciation and impairment losses, and adjusted for any remeasurement of lease liabilities. The cost of right-of-use assets includes the amount of lease liabilities recognised, initial direct costs incurred, and lease payments made at or before the commencement date less any lease incentives received. Right-of-use assets are depreciated on a straight-line basis over the shorter of the lease term and the estimated useful lives of the assets. The right-of-use assets are also subject to assets impairment (Note 2.5). 2.4. Borrowing costs Interest costs incurred in the construction of any qualifying asset are capitalized over the period required to complete and prepare the asset for its intended use. A qualifying asset is an asset that necessarily takes a substantial period of time to get ready for its internal use or sale, which is considered to be more than one year. Remaining borrowing costs are expensed in the period in which they are incurred. 2.5. Asset impairment Atlantica reviews its contracted concessional assets to identify any indicators of impairment at least annually. When impairment indicators exist, the company calculates the recoverable amount of the asset. The recoverable amount of an asset is the higher of its fair value less costs to sell and its value in use, defined as the present value of the estimated future cash flows to be generated by the asset. In the event that the asset does not generate cash flows independently of other assets, the Company calculates the recoverable amount of the Cash Generating Unit (‘CGU’) to which the asset belongs. When the carrying amount of the CGU to which these assets belong is higher than its recoverable amount, the assets are impaired. Assumptions used to calculate value in use include a discount rate, growth rate and projections considering real data based in the contracts terms and projected changes in both selling prices and costs. The discount rate is estimated by Management, to reflect both changes in the value of money over time and the risks associated with the specific CGU. For contracted concessional assets, with a defined useful life and with a specific financial structure, cash flow projections until the end of the project are considered and no terminal value is assumed. Contracted concessional assets have a contractual structure that permits the Company to estimate quite accurately the costs of the project and revenue during the life of the project. Projections take into account real data based on the contract terms and fundamental assumptions based on specific reports prepared internally and supported by specialists, assumptions on demand and assumptions on production. Additionally, assumptions on macro-economic conditions are taken into account, such as inflation rates, future interest rates, etc. and sensitivity analyses are performed over all major assumptions which can have a significant impact in the value of the asset. Cash flow projections of CGUs are calculated in the functional currency of those CGUs and are discounted using rates that take into consideration the risk corresponding to each specific country and currency. Taking into account that in most CGUs the specific financial structure is linked to the financial structure of the projects that are part of those CGUs, the discount rate used to calculate the present value of cash-flow projections is based on the weighted average cost of capital (WACC) for the type of asset, adjusted, if necessary, in accordance with the business of the specific activity and with the risk associated with the country where the project is performed. In any case, sensitivity analyses are performed, especially in relation with the discount rate used and fair value changes in the main business variables, in order to ensure that possible changes in the estimates of these items do not impact the recovery of recognized assets. Accordingly, the following table provides a summary of the discount rates used (WACC) and growth rates to calculate the recoverable amount for CGUs with the operating segment to which it pertains: Operating segment Discount rate Growth rate EMEA 4% - 6 % 0 % North America 4% - 5 % 0 % South America 5% - 7 % 0 % In the event that the recoverable amount of an asset is lower than its carrying amount, an impairment charge for the difference would be recorded in the income statement under the item “Depreciation, amortization and impairment charges”. Pursuant to IAS 36, an impairment loss is recognized by the Company if the carrying amount of these assets exceeds the present value of future cash flows discounted at the initial effective interest rate. 2.6 Loans and accounts receivable Loans and accounts receivable are non-derivative financial assets with fixed or determinable payments, not listed on an active market. In accordance with IFRIC 12, certain assets under concessions qualify as financial assets and are recorded as is described in Note 2.3. Pursuant to IFRS 9, an impairment loss is recognized if the carrying amount of these assets exceeds the present value of future cash flows discounted at the initial effective interest rate. Loans and accounts receivable are initially recognized at fair value plus transaction costs and are subsequently measured at amortized cost in accordance with the effective interest rate method. Interest calculated using the effective interest rate method is recognized under other financial income within financial income. 2.7. Derivative financial instruments and hedging activities Derivatives are recorded at fair value. The Company applies hedge accounting to all hedging derivatives that qualify to be accounted for as hedges under IFRS-IASB. When hedge accounting is applied, hedging strategy and risk management objectives are documented at inception, as well as the relationship between hedging instruments and hedged items. Effectiveness of the hedging relationship needs to be assessed on an ongoing basis. Effectiveness tests are performed prospectively at inception and at each reporting date, following the dollar offset method. Atlantica applies cash flow hedging. Under this method, the effective portion of changes in fair value of derivatives designated as cash flow hedges are recorded temporarily in equity and are subsequently reclassified from equity to profit or loss in the same period or periods during which the hedged item affects profit or loss. Any ineffective portion of the hedged transaction is recorded in the consolidated income statement as it occurs. When interest rate options are designated as hedging instruments, the intrinsic value and time value of the financial hedge instrument are separated. Changes in intrinsic and time value which are highly effective are recorded in equity and subsequently reclassified from equity to profit or loss in the same period or periods during which the hedged item affects profit or loss. Any ineffectiveness is recorded as financial income or expense as it occurs. When the hedging instrument matures or is sold, or when it no longer meets the requirements to apply hedge accounting, accumulated gains and losses recorded in equity remain as such until the forecast transaction is ultimately recognized in the income statement. However, if it becomes unlikely that the forecast transaction will actually take place, the accumulated gains and losses in equity are recognized immediately in the income statement. 2.8. Fair value estimates Financial instruments measured at fair value are presented in accordance with the following level classification based on the nature of the inputs used for the calculation of fair value: · Level 1: Inputs are quoted prices in active markets for identical assets or liabilities. · Level 2: Fair value is measured based on inputs other than quoted prices included within Level 1 that are observable for the asset or liability, either directly (i.e. as prices) or indirectly (i.e. derived from prices). · Level 3: Fair value is measured based on unobservable inputs for the asset or liability. In the event that prices cannot be observed, the management shall make its best estimate of the price that the market would otherwise establish based on proprietary internal models which, in the majority of cases, use data based on observable market parameters as significant inputs (Level 2) but occasionally use market data that is not observed as significant inputs (Level 3). Different techniques can be used to make this estimate, including extrapolation of observable market data. The best indication of the initial fair value of a financial instrument is the price of the transaction, except when the value of the instrument can be obtained from other transactions carried out in the market with the same or similar instruments, or valued using a valuation technique in which the variables used only include observable market data, mainly interest rates. Differences between the transaction price and the fair value based on valuation techniques that use data that is not observed in the market, are not initially recognized in the income statement. Atlantica derivatives correspond primarily to the interest rate swaps designated as cash flow hedges, which are classified as Level 2. Description of the valuation method Interest rate swap valuations are made by valuing the swap part of the contract and valuing the credit risk. The methodology used by the market and applied by Atlantica to value interest rate swaps is to discount the expected future cash flows according to the parameters of the contract. Variable interest rates, which are needed to estimate future cash flows, are calculated using the curve for the corresponding currency and extracting the implicit rates for each of the reference dates in the contract. These estimated flows are discounted with the swap zero curve for the reference period of the contract. The effect of the credit risk on the valuation of the interest rate swaps depends on the future settlement. If the settlement is favorable for the Company, the counterparty credit spread will be incorporated to quantify the probability of default at maturity. If the expected settlement is negative for the Company, its own credit risk will be applied to the final settlement. Classic models for valuing interest rate swaps use deterministic valuation of the future of variable rates, based on future outlooks. When quantifying credit risk, this model is limited by considering only the risk for the current paying party, ignoring the fact that the derivative could change sign at maturity. A payer and receiver swaption model is proposed for these cases. This enables the associated risk in each swap position to be reflected. Thus, the model shows each agent’s exposure, on each payment date, as the value of entering into the ‘tail’ of the swap, i.e. the live part of the swap. Variables (Inputs) Interest rate derivative valuation models use the corresponding interest rate curves for the relevant currency and underlying reference in order to estimate the future cash flows and to discount them. Market prices for deposits, futures contracts and interest rate swaps are used to construct these curves. Interest rate options (caps and floors) also use the volatility of the reference interest rate curve. To estimate the credit risk of the counterparty, the credit default swap (CDS) spreads curve is obtained in the market for important individual issuers. For less liquid issuers, the spreads curve is estimated using comparable CDSs or based on the country curve. To estimate proprietary credit risk, prices of debt issues in the market and CDSs for the sector and geographic location are used. The fair value of the financial instruments that results from the aforementioned internal models takes into account, among other factors, the terms and conditions of the contracts and observable market data, such as interest rates, credit risk and volatility. The valuation models do not include significant levels of subjectivity, since these methodologies can be adjusted and calibrated, as appropriate, using the internal calculation of fair value and subsequently compared to the corresponding actively traded price. However, valuation adjustments may be necessary when the listed market prices are not available for comparison purposes. 2.9. Trade and other receivables Trade and other receivables are amounts due from customers for sales in the normal course of business. They are recognized initially at fair value and subsequently measured at amortized cost using the effective interest rate method, less allowance for doubtful accounts. Trade receivables due in less than one year are carried at their face value at both initial recognition and subsequent measurement, provided that the effect of not discounting flows is not significant. An allowance for doubtful accounts is recorded when there is objective evidence that the Company will not be able to recover all amounts due as per the original terms of the receivables. The Company has established a provision matrix that is based on its historical credit loss experience, adjusted for forward-looking factors specific to the debtors and the economic environment. 2.10. Cash and cash equivalents Cash and cash equivalents include cash in hand, cash in bank and other highly-liquid current investments with an original maturity of three months or less which are held for the purpose of meeting short-term cash commitments. 2.11. Grants Grants are recognized at fair value when it is considered that there is a reasonable assurance that the grant will be received and that the necessary qualifying conditions, as agreed with the entity assigning the grant, will be adequately complied with. Grants are recorded as liabilities in the consolidated statement of financial position and are recognized in “Other operating income” in the consolidated income statement based on the period necessary to match them with the costs they intend to compensate. In addition, as described in Note 2.12 below, grants correspond also to loans with interest rates below market rates, for the initial difference between the fair value of the loan and the proceeds received. 2.12. Loans and borrowings Loans and borrowings are initially recognized at fair value, net of transaction costs incurred. Borrowings are subsequently measured at amortized cost and any difference between the proceeds initially received (net of transaction costs incurred in obtaining such proceeds) and the repayment value is recognized in the consolidated income statement over the duration of the borrowing using the effective interest rate method. Loans with interest rates below market rates are initially recognized at fair value in liabilities and the difference between proceeds received from the loan and its fair value is initially recorded within “Grants and Other liabilities” in the consolidated statement of financial position, and subsequently recorded in “Other operating income” in the consolidated income statement when the costs financed with the loan are expensed. Lease liabilities are recognized by the Company at the commencement date of the lease at the present value of lease payments to be made over the lease term. The lease payments include the exercise price of a purchase option reasonably certain to be exercised by the Company and payments of penalties for terminating the lease, if the lease term reflects the Company exercising the option to terminate. In calculating the present value of lease payments, the Company uses its incremental borrowing rate at the lease commencement date considering that the interest rate implicit in the lease is not readily determinable. 2.13. Bonds and notes The Company initially recognizes ordinary notes at fair value, net of issuance costs incurred. Subsequently, notes are measured at amortized cost until settlement upon maturity. Any other difference between the proceeds obtained (net of transaction costs) and the redemption value is recognized in the consolidated income statement over the term of the debt using the effective interest rate method. 2.14. Income taxes Current income tax expense is calculated on the basis of the tax laws in force as of the date of the consolidated statement of financial position in the countries in which the subsidiaries and associates operate and generate taxable income. Deferred income tax is calculated in accordance with the liability method, based upon the temporary differences arising between the carrying amount of assets and liabilities and their tax base. Deferred income tax is determined using tax rates and regulations which are expected to apply at the time when the deferred tax is realized. Deferred tax assets are recognized only when it is probable that sufficient future taxable profit will be available to use deferred tax assets. 2.15. Trade payables and other liabilities Trade payables are obligations arising from purchases of goods and services in the ordinary course of business and are recognized initially at fair value and are subsequently measured at their amortized cost using the effective interest method. Other liabilities are obligations not arising in the normal course of business and which are not treated as financing transactions. Advances received from customers are recognized as “Trade payables and other current liabilities”. 2.16. Foreign currency transactions The consolidated financial statements are presented in U.S. dollars, which is Atlantica’s functional and presentation currency. Financial statements of each subsidiary within the Company are measured in the currency of the principal economic environment in which the subsidiary operates, which is the subsidiary’s functional currency. Transactions denominated in a currency different from the subsidiary’s functional currency are translated into the subsidiary’s functional currency applying the exchange rates in force at the time of the transactions. Foreign currency gains and losses that result from the settlement of these transactions and the translation of monetary assets and liabilities denominated in foreign currency at the year-end rates are recognized in the consolidated income statement, unless they are deferred in equity, as occurs with cash flow hedges and net investment in foreign operations hedges. Assets and liabilities of subsidiaries with a functional currency different from the Company’s reporting currency are translated to U.S. dollars at the exchange rate in force at the closing date of the financial statements. Income and expenses are translated into U.S. dollars using the average annual exchange rate, which does not differ significantly from using the exchange rates of the dates of each transaction. The difference between equity translated at the historical exchange rate and the net financial position that results from translating the assets and liabilities at the closing rate is recorded in equity under the heading “Accumulated currency translation differences”. Results of companies carried under the equity method are translated at the average annual exchange rate. 2.17. Equity The Company has recyclable balances in its equity, corresponding mainly to hedge reserves and translation differences arising from currency conversion in the preparation of these consolidated financial statements. These balances have been presented separately in Equity. Non-controlling interest represents interest from other partners in entities included in these consolidated financial statements which are not fully owned by Atlantica as of the dates presented. Parent company reserves together with the Share capital represent the Parent’s net investment in the entities included in these consolidated financial statements. 2.18. Provisions and contingencies Provisions are recognized when: · there is a present obligation, either legal or constructive, as a result of past events; · it is more likely than not that there will be a future outflow of resources to settle the obligation; and · the amount has been reliably estimated. Provisions are initially measured at the present value of the expected outflows required to settle the obligation and subsequently valued at amortized cost following the effective interest method. The balance of provisions disclosed in the Notes reflects management’s best estimate of the potential exposure as of the date of preparation of the consolidated financial statements. Contingent liabilities are possible obligations, existing obligations with low probability of a future outflow of economic resources and existing obligations where the future outflow cannot be reliably estimated. Contingences are not recognized in the consolidated statements of financial position unless they have been acquired in a business combination. Some companies included in the group have dismantling provisions, which are intended to cover future expenditures related to the dismantlement of the plants and it will be likely to be settled with an outflow of resources in the long term (over 5 years). Such provisions are accrued when the obligation for dismantling, removing and restoring the site

Financial risk management

Financial risk management	12 Months Ended
	Dec. 31, 2019
Financial risk management [Abstract]
Financial risk management	Note 3.- Financial risk management Atlantica’s activities are exposed to various financial risks: market risk (including currency risk and interest rate risk), credit risk and liquidity risk. Risk is managed by the Company’s Risk Finance and Compliance Departments, which are responsible for identifying and evaluating financial risks quantifying them by project, region and company, in accordance with mandatory internal management rules. Written internal policies exist for global risk management, as well as for specific areas of risk. In addition, there are official written management regulations regarding key controls and control procedures for each company and the implementation of these controls is monitored through internal audit procedures. a) Market risk The Company is exposed to market risk, such as movement in foreign exchange rates and interest rates. All of these market risks arise in the normal course of business and the Company does not carry out speculative operations. For the purpose of managing these risks, the Company uses a series of interest rate swaps and options, and currency options. None of the derivative contracts signed has an unlimited loss exposure. - Interest rate risk Interest rate risk arises when the Company’s activities are exposed to changes in interest rates, which arises from financial liabilities at variable interest rates. The main interest rate exposure for the Company relates to the variable interest rate with reference to the Libor and Euribor. To minimize the interest rate risk, the Company primarily uses interest rate swaps and interest rate options (caps), which, in exchange for a fee, offer protection against an increase in interest rates. The Company does not use derivatives for speculative purposes. As a result, the notional amounts hedged, strikes contracted and maturities, depending on the characteristics of the debt on which the interest rate risk is being hedged, are very diverse, including the following: o Project debt in Euros: the Company hedges between 81% and 100% of the notional amount, maturities until 2030 and average guaranteed strike interest rates of between 0.89% and 4.87%. o Project debt in U.S. dollars: the Company hedges between 70% and 100% of the notional amount, including maturities until 2034 and average guaranteed strike interest rates of between 1.98% and 5.27%. In connection with the interest rate derivative positions of the Company, the most significant impacts on these consolidated financial statements are derived from the changes in EURIBOR or LIBOR, which represent the reference interest rate for most of the debt of the Company. In the event that Euribor and Libor had risen by 25 basis points as of December 31, 2019, with the rest of the variables remaining constant, the effect in the consolidated income statement would have been a loss of $2,745 thousand (a loss of $2,731 thousand in 2018 and a loss of $1,066 thousand in 2017) and an increase in hedging reserves of $27,570 thousand ($32,928 thousand in 2018 and $39,142 thousand in 2017). The increase in hedging reserves would be mainly due to an increase in the fair value of interest rate swaps designated as hedges. A breakdown of the interest rates derivatives as of December 31, 2019 and 2018, is provided in Note 9. - Currency risk The main cash flows in the entities included in these consolidated financial statements are cash collections arising from long-term contracts with clients and debt payments arising from project finance repayment. Given that financing of the projects is always closed in the same currency in which the contract with client is signed, a natural hedge exists for the main operations of the Company. In addition, the Company policy is to contract currency options with leading financial institutions, which guarantee a minimum Euro-U.S. dollar exchange rate on the net distributions expected from Spanish solar assets. The net Euro exposure is 100% covered for the coming 12 months and 75% for the following 12 months on a rolling basis. b) Credit risk The Company considers that it has a limited credit risk with clients as revenues derive from power purchase agreements with electric utilities and state-owned entities. On January 29, 2019, PG&E, the off-taker for Atlantica with respect to the Mojave plant, filed for reorganization under Chapter 11 of the Bankruptcy Code in the U.S. Bankruptcy Court for the Northern District of California (the “Bankruptcy Court”). As a consequence, PG&E did not pay the portion of the invoice corresponding to the electricity delivered for the period between January 1 and January 28, 2019, which was due on February 25, given that the services relate to the pre-petition period and any payment therefore would require approval by the Bankruptcy Court. However, PG&E has paid all invoices corresponding to the electricity delivered after January 28 and has continued to be in compliance with the remaining terms and conditions of the PPA. c) Liquidity risk Atlantica’s liquidity and financing policy is intended to ensure that the Company maintains sufficient funds to meet our financial obligations as they fall due. Project finance borrowing permits the Company to finance the project through project debt and thereby insulate the rest of its assets from such credit exposure. The Company incurs in project-finance debt on a project-by-project basis. The repayment profile of each project is established on the basis of the projected cash flow generation of the business. This ensures that sufficient financing is available to meet deadlines and maturities, which mitigates the liquidity risk significantly.

Financial information by segmen

Financial information by segment	12 Months Ended
	Dec. 31, 2019
Financial information by segment [Abstract]
Financial information by segment	Note 4.- Financial information by segment Atlantica’s segment structure reflects how management currently makes financial decisions and allocates resources. Its operating and reportable segments are based on the following geographies where the contracted concessional assets are located: · North America · South America · EMEA Based on the type of business, as of December 31, 2019 the Company had the following business sectors: Renewable energy: Efficient natural gas: Electric transmission lines Water: 3 Atlantica’s Chief Operating Decision Maker (CODM) assesses the performance and assignment of resources according to the identified operating segments. The CODM considers the revenues as a measure of the business activity and the Further Adjusted EBITDA as a measure of the performance of each segment. Further Adjusted EBITDA is calculated as profit/(loss) for the period attributable to the parent company, after adding back loss/(profit) attributable to non-controlling interests from continued operations, income tax, share of profit/(loss) of associates carried under the equity method, finance expense net, depreciation, amortization and impairment charges of entities included in these consolidated financial statements, and compensations received from Abengoa in lieu of Abengoa Concessões Brasil Holding (“ACBH”) dividends (for the period up to the first quarter of 2017 only). In order to assess performance of the business, the CODM receives reports of each reportable segment using revenues and Further Adjusted EBITDA. Net interest expense evolution is assessed on a consolidated basis. Financial expense and amortization are not taken into consideration by the CODM for the allocation of resources. In the years ended December 31, 2019 and December 31, 2018 Atlantica had four customers with revenues representing more than 10% of the total revenues, three in the renewable energy and one in the efficient natural gas business sectors. a) The following tables show Revenues and Further Adjusted EBITDA by operating segments and business sectors for the years 2019, 2018 and 2017: Revenue Further Adjusted EBITDA For the year ended December 31, For the year ended December 31, Geography 2019 2018 2017 2019 2018 2017 North America $ 332,965 $ 357,177 $ 332,705 $ 305,085 $ 308,748 $ 282,328 South America 142,207 123,214 120,797 115,346 100,234 108,766 EMEA 536,280 563,431 554,879 390,774 441,625 388,216 Total $ 1,011,452 $ 1,043,822 $ 1,008,381 $ 811,204 $ 850,607 $ 779,310 Revenue Further Adjusted EBITDA For the year ended December 31, For the year ended December 31, Business sectors 2019 2018 2017 2019 2018 2017 Renewable energy $ 761,090 $ 793,557 $ 767,226 $ 603,666 $ 664,428 $ 569,193 Efficient natural gas 122,281 130,799 119,784 107,457 93,858 106,140 Electric transmission lines 103,453 95,998 95,096 85,657 78,461 87,695 Water 24,629 23,468 26,275 14,424 13,860 16,282 Total $ 1,011,452 $ 1,043,822 $ 1,008,381 $ 811,204 $ 850,607 $ 779,310 The reconciliation of segment Further Adjusted EBITDA with the profit/(loss) attributable to the parent company is as follows: For the year ended December 31, 2019 2018 2017 Profit/(Loss) attributable to the Company $ 62,135 $ 41,596 $ (111,804 ) Profit attributable to non-controlling interests 12,473 13,673 6,917 Income tax 30,950 42,659 119,837 Share of profits/(losses) of associates (7,457 ) (5,231 ) (5,351 ) Dividend from exchangeable preferred equity investment in ACBH (Note 21) - - 10,383 Financial expense, net 402,348 395,213 448,368 Depreciation, amortization, and impairment charges 310,755 362,697 310,960 Total segment Further Adjusted EBITDA $ 811,204 $ 850,607 $ 779,310 b) The assets and liabilities by operating segments (and business sector) at the end of 2019 and 2018 are as follows: Assets and liabilities by geography as of December 31, 2019: North America South America EMEA Balance as of December 31, 2019 Assets allocated Contracted concessional assets 3,299,198 1,186,552 3,675,379 8,161,129 Investments carried under the equity method 90,847 - 49,078 139,925 Current financial investments 159,267 29,190 20,673 209,131 Cash and cash equivalents (project companies) 181,458 80,909 234,097 496,464 Subtotal allocated 3,730,771 1,296,652 3,979,227 9,006,649 Unallocated assets Other non-current assets 239,553 Other current assets (including cash and cash equivalents at holding company level) 413,613 Subtotal unallocated 653,166 Total assets 9,659,815 North America South America EMEA Balance as of December 31, 2019 Liabilities allocated Long-term and short-term project debt 1,676,251 884,835 2,291,262 4,852,348 Grants and other liabilities 1,490,679 12,864 138,209 1,641,752 Subtotal allocated 3,166,930 897,699 2,429,471 6,494,100 Unallocated liabilities Long-term and short-term corporate debt 723,791 Other non-current liabilities 564,855 Other current liabilities 162,213 Subtotal unallocated 1,450,859 Total liabilities 7,944,959 Equity unallocated 1,714,856 Total liabilities and equity unallocated 3,165,715 Total liabilities and equity 9,659,815 Assets and liabilities by geography as of December 31, 2018: North America South America EMEA Balance as of December 31, 2018 Assets allocated Contracted concessional assets 3,453,652 1,210,624 3,884,905 8,549,181 Investments carried under the equity method - - 53,419 53,419 Current financial investments 147,213 61,959 30,080 239,252 Cash and cash equivalents (project companies) 195,678 41,316 287,456 524,450 Subtotal allocated 3,796,543 1,313,899 4,255,860 9,366,302 Unallocated assets Other non-current assets 188,736 Other current assets (including cash and cash equivalents at holding company level) 363,993 Subtotal unallocated 552,729 Total assets 9,919,031 North America South America EMEA Balance as of December 31, 2018 Liabilities allocated Long-term and short-term project debt 1,725,961 900,801 2,464,352 5,091,114 Grants and other liabilities 1,527,724 7,550 122,852 1,658,126 Subtotal allocated 3,253,685 908,351 2,587,204 6,749,240 Unallocated liabilities Long-term and short-term corporate debt 684,073 Other non-current liabilities 523,827 Other current liabilities 205,779 Subtotal unallocated 1,413,679 Total liabilities 8,162,919 Equity unallocated 1,756,112 Total liabilities and equity unallocated 3,169,791 Total liabilities and equity 9,919,031 Assets and liabilities by business sectors as of December 31, 2019: Renewable energy Efficient natural gas Electric transmission lines Water Balance as of December 31, 2019 Assets allocated Contracted concessional assets 6,644,024 559,069 872,757 85,280 8,161,129 Investments carried under the equity method 77,549 17,154 - 45,222 139,925 Current financial investments 13,798 148,723 28,237 18,373 209,131 Cash and cash equivalents (project companies) 421,198 11,850 53,868 9,548 496,464 Subtotal allocated 7,156,568 736,796 954,862 158,423 9,006,649 Unallocated assets Other non-current assets 239,553 Other current assets (including cash and cash equivalents at holding company level) 413,613 Subtotal unallocated 653,166 Total assets 9,659,815 Renewable energy Efficient natural gas Electric transmission lines Water Balance as of December 31, 2019 Liabilities allocated Long-term and short-term project debt 3,658,507 529,350 640,160 24,331 4,852,348 Grants and other liabilities 1,634,361 146 6,517 728 1,641,752 Subtotal allocated 5,292,868 529,495 646,677 25,059 6,494,100 Unallocated liabilities Long-term and short-term corporate debt 723,791 Other non-current liabilities 564,855 Other current liabilities 162,213 Subtotal unallocated 1,450,859 Total liabilities 7,944,959 Equity unallocated 1,714,856 Total liabilities and equity unallocated 3,165,715 Total liabilities and equity 9,659,815 Assets and liabilities by business sectors as of December 31, 2018: Renewable energy Efficient natural gas Electric transmission lines Water Balance as of December 31, 2018 Assets allocated Contracted concessional assets 6,998,020 580,997 882,980 87,184 8,549,181 Investments carried under the equity method 10,257 - - 43,162 53,419 Current financial investments 15,396 147,192 61,102 15,562 239,252 Cash and cash equivalents (project companies) 453,096 45,625 14,043 11,686 524,450 Subtotal allocated 7,476,769 773,814 958,125 157,594 9,366,302 Unallocated assets Other non-current assets 188,736 Other current assets (including cash and cash equivalents at holding company level) 363,993 Subtotal unallocated 552,729 Total assets 9,919,031 Renewable energy Efficient natural gas Electric transmission lines Water Balance as of December 31, 2018 Liabilities allocated Long-term and short-term project debt 3,868,626 545,123 647,820 29,545 5,091,114 Grants and other liabilities 1,656,146 161 1,025 794 1,658,126 Subtotal allocated 5,524,772 545,284 648,845 30,339 6,749,240 Unallocated liabilities Long-term and short-term corporate debt 684,073 Other non-current liabilities 523,827 Other current liabilities 205,779 Subtotal unallocated 1,413,679 Total liabilities 8,162,919 Equity unallocated 1,756,112 Total liabilities and equity unallocated 3,169,791 Total liabilities and equity 9,919,031 c) The amount of depreciation, amortization and impairment charges recognized for the years ended December 31, 2019, 2018 and 2017 are as follows: For the year ended December 31, Depreciation, amortization and impairment by geography 2019 2018 2017 North America (116,232 ) (166,046 ) (123,726 ) South America (47,844 ) (42,368 ) (40,880 ) EMEA (146,679 ) (154,283 ) (146,354 ) Total (310,755 ) (362,697 ) (310,960 ) For the year ended December 31, Depreciation, amortization and impairment by business sectors 2019 2018 2017 Renewable energy (286,907 ) (323,538 ) (282,376 ) Electric transmission lines (27,490 ) (28,925 ) (28,584 ) Efficient natural gas 3,102 (10,334 ) - Water 541 100 - Total (310,755 ) (362,697 ) (310,960 )

Changes in the scope of the con

Changes in the scope of the consolidated financial statements	12 Months Ended
	Dec. 31, 2019
Changes in the scope of the consolidated financial statements [Abstract]
Changes in the scope of the consolidated financial statements	Note 5.- Changes in the scope of the consolidated financial statements For the year ended December 31, 2019 On May 24, 2019, Atlantica and Algonquin formed Atlantica Yield Energy Solutions Canada Inc. (“AYES Canada”), a vehicle to channel co-investment opportunities in which Atlantica holds the majority of voting rights. The first investment was in Amherst Island, a 75 MW wind plant in Canada owned by the project company Windlectric, Inc. (“Windlectric”). Atlantica invested $4.9 million and Algonquin invested $92.3 million, both through AYES Canada, which in turn invested those funds in Amherst Island Partnership (“AIP”), the holding company of Windlectric. Atlantica accounts for the investment in AIP and ultimately Windlectric under the equity method as per IAS 28, Investments in Associates and Joint Ventures. Since Atlantica has control over AYES Canada under IFRS 10 “Consolidated Financial Statements”, its consolidated financial statements initially showed a total investment in the Amherst Island project of $97.2 million, accounted for as “Investments carried under the equity method” (Note 7) and Algonquin’s portion of that investment of $92.3 million as “Non-controlling interest”. On August 2, 2019, the Company closed the acquisition of a 30% stake in Monterrey, a 142 MW gas-fired engine facility with batteries. The total investment amounted to $42 million, out of which $17 million is an equity investment, and the rest is a shareholder loan classified as financial investments in these consolidated financial statements. The acquisition has been accounted for in the consolidated accounts of Atlantica, in accordance with IAS 28, Investments in Associates. On August 2, 2019, the Company closed the acquisition of a 100% stake in ASI Operations LLC (“ASI Ops”), the company that performs the operation and maintenance services for the Solana and Mojave plants. The total equity investment amounted to $6 million. The acquisition has been accounted for in the consolidated financial statements of Atlantica, in accordance with IFRS 3, Business Combinations. On October 22, 2019, the Company closed the acquisition of ATN Expansion 2 from Enel Green Power Peru, for a total equity investment of $20 million, controlling the asset from this date. Transfer of the concession agreement is pending authorization from the Ministry of Energy in Peru. If this authorization were not to be obtained within an eight-month period from the acquisition date, the transaction would be reversed with no penalties to Atlantica. Enel Green Power Peru issued a bank guarantee to face this potential repayment obligation to Atlantica. The purchase has been accounted for in the consolidated accounts of Atlantica, in accordance with IFRS 3, Business Combinations. Impact of changes in the scope in the consolidated financial statements The amount of assets and liabilities integrated at the effective acquisition date for the aggregated change in scope is shown in the following table: Asset Acquisition for the year ended December 31, 2019 Concessional assets (Note 6) 28,738 Investments carried under the equity method (Note 7) 113,897 Other non-current assets 25,342 Current assets 1,503 Deferred tax liabilities (Note 18) (2,539 ) Other current and non-current liabilities (1,512 ) Non-controlling interests (92,303 ) Asset acquisition - purchase price (73,126 ) Net result of the asset acquisition - The allocation of the purchase prices is provisional as of December 31, 2019 for some of the acquisitions. As such, the amounts indicated may be adjusted during the measurement period to reflect new information obtained about facts and circumstances that existed at the acquisition date that, if known, would have affected the amounts recognized as of December 31, 2019. The measurement period will not exceed one year from the acquisition dates. The amount of revenue contributed by the acquisitions performed during 2019 to the consolidated financial statements of the Company for the year 2019 is $0.3 million, and the amount of profit after tax is $0.5 million. Had the acquisitions been consolidated from January 1, 2019, the consolidated statement of comprehensive income would have included additional revenue of $2.3 million and additional loss after tax of $2.4 million. For the year ended December 31, 2018 On February 28, 2018, the Company completed the acquisition of a 100% stake in Hidrocañete, S.A. (Mini-Hydro). Total purchase price for this asset amounted to $9.3 million. The purchase was accounted for in the consolidated accounts of Atlantica, in accordance with IFRS 3, Business Combinations. On October 10, 2018, the Company completed the acquisition of a 5% stake in Gas CA-KU-A1, S.A.P.I de C.V. (Pemex Transportation System or “PTS”). The purchase was accounted for in the consolidated accounts of Atlantica, in accordance with IAS 28, Investments in Associates. Consideration for the initial 5% will amount to approximately $7 million and will be disbursed progressively. The project is expected to enter operation in the first half of 2020. On December 11, 2018, the Company completed the acquisition of a transmission line in Chile (Chile TL3). The total purchase price for this asset amounted to $6.0 million. The purchase was accounted for in the consolidated accounts of Atlantica, in accordance with IFRS 3, Business Combinations. On December 13, 2018, the Company completed the acquisition of a 100% stake in Estrellada, S.A. (Melowind). Total purchase price for this asset amounted to $45.3 million. The purchase was accounted for in the consolidated accounts of Atlantica, in accordance with IFRS 3, Business Combinations. On December 28, 2018, the Company completed the acquisition of a power substation and two small transmission lines in Peru, being an expansion of the ATN transmission line (“ATN Expansion 1”). Total purchase price for this asset amounted to $16.0 million. The purchase was accounted for in the consolidated accounts of Atlantica, in accordance with IFRS 3, Business Combinations. Impact of changes in the scope in the consolidated financial statements The amount of assets and liabilities integrated at the effective acquisition date for the aggregated change in scope is shown in the following table: Asset Acquisition for the year ended December 31, 2018 Concessional assets (Note 6) 155,909 Investments carried under the equity method (Note 7) 1 Current assets 5,646 Project debt long term (Note 15) (79,016 ) Deferred tax liabilities (Note 18) (590 ) Project debt short term (Note 15) (2,346 ) Other current and non-current liabilities (3,000 ) Asset acquisition - purchase price (76,604 ) Net result of the asset acquisition - The allocation of the purchase prices was provisional as of December 31, 2018 for some of the acquisitions that were made effective near to year end. No significant adjustments were made in 2019 to the amounts indicated in the table above during the measurement period (one year from the acquisition dates). The amount of revenue contributed by the acquisitions performed during 2018 to the consolidated financial statements of the Company for the year 2018 was $1.8 million, and the amount of loss after tax was $0.3 million. Had the acquisitions been consolidated from January 1, 2018, the consolidated statement of comprehensive income would have included additional revenue of $13.3 million and additional loss after tax of $0.7 million.

Contracted concessional assets

Contracted concessional assets	12 Months Ended
	Dec. 31, 2019
Contracted concessional assets [Abstract]
Contracted concessional assets	Note 6.- Contracted concessional assets Contracted concessional assets include fixed assets financed through project debt, related to service concession arrangements recorded in accordance with IFRIC 12, except for Palmucho, which is recorded in accordance with IFRS 16, and PS10, PS20, Seville PV, Mini-Hydro and Chile TL3 which are recorded as property plant and equipment in accordance with IAS 16. Concessional assets recorded in accordance with IFRIC 12 are either intangible or financial assets. As of December 31, 2019, contracted concessional financial assets amount to $819,146 thousand ($843,291 thousand as of December 31, 2018). For further details on the application of IFRIC 12 to projects, see Appendix III. a) The following table shows the movements of contracted concessional assets included in the heading “Contracted Concessional assets” for 2019: Cost Total as of January 1, 2019 10,475,828 Additions 1,431 Subtractions (23,186 ) Change in the scope of the consolidated financial statements (Note 5) 28,738 Translation differences (81,941 ) Reclassification and other movements (16,273 ) Total as of December 31, 2019 10,384,597 Accumulated amortization Total as of January 1, 2019 (1,926,647 ) Additions (310,755 ) Translation differences 15,778 Reclassification and other movements (1,844 ) Total accum. amort. as of December 31, 2019 (2,223,468 ) Net balance at December 31, 2019 8,161,129 During 2019, contracted concessional assets decreased primarily due to the effect of the depreciation of the Euro against the U.S. dollar for the year ended December 31, 2019 compared to the year ended December 31, 2018 and to the amortization charge for the year. Other relevant movements in the cost of contracted concessional assets are an increase for the acquisition of new concessional assets (see Note 5), offset by a decrease for the payments received from Abengoa by Solana in January, June and December 2019 further to Abengoa´s obligation as EPC Contractor for a total amount of $22.2 million (Note 15). The decrease included in “Reclassification and other movements” is mainly due to the reclassification from the long to the short term of the current portion of the contracted concessional financial assets. Rights of use, as a result of applying IFRS 16, Leases, amounts to $54.0 million as of December 31, 2019 ($57.5 million at December 31, 2018). The decrease is mainly due to the amortization for the year. The Company has not identified any triggering event of impairment for its contracted concessional assets, and consequently, no losses from impairment of contracted concessional assets were recorded during the year ended December 31, 2019. Likewise, during 2019, and as part of the triggering event analysis, Solana impairment test was updated, confirming the conclusions reached. b) The following table shows the movements of contracted concessional assets included in the heading “Contracted Concessional assets” for 2018: Cost Total as of January 1, 2018 10,633,769 Additions 10,463 Application of IFRS 16 – Leases effective January 1, 2018 62,982 Subtractions (92,814 ) Change in the scope of the consolidated financial statements (Note 5) 170,040 Translation differences (280,680 ) Reclassification and other movements (27,932 ) Total as of December 31, 2018 10,475,828 Accumulated amortization Total as of January 1, 2018 (1,549,499 ) Application of IFRS9 - Expected Credit Losses effective January 1, 2018 (53,048 ) Additions (362,697 ) Change in the scope of the consolidated financial statements (Note 5) (14,131 ) Translation differences 52,728 Total accum. amort. as of December 31, 2018 (1,926,647 ) Net balance at December 31, 2018 8,549,181 During 2018, contracted concessional assets decreased primarily due to the effect of the depreciation of the Euro against the U.S. dollar for the year ended December 31, 2019 compared to the year ended December 31, 2018 and to the amortization charge for the year. Other relevant movements in the cost of contracted concessional assets are an increase for the acquisition of new concessional assets (see Note 5), the impact of the application of IFRS 16, ´Leases´ from January 1, 2018, partially offset by a decrease for the payments received from Abengoa by Solana in March and December 2018 further to Abengoa´s obligation as EPC Contractor. Amortization and impairment amount includes the recognition of impairment provisions based on expected credit losses due to the application of IFRS 9, ´Financial instruments´ from January 1, 2018. The decrease included in “Reclassification and other movements” was mainly due to the reclassification from the long to the short term of the current portion of the contracted concessional financial assets. Considering the lower production compared with the run-rate production expected for Solana due to the technical issues experienced since COD in the asset and the uncertainty around level of production in the future, the Company identified a triggering event of impairment during the year 2018 in compliance with IAS 36, Impairment of Assets. As a result, an impairment test has been performed resulting in the recording of an impairment loss of $42,721 thousand as of December 31, 2018. The impairment had been recorded within the line “Depreciation, amortization and impairment charges” of the consolidated income statement, decreasing the amount of “Contracted concessional assets” pertaining to the Renewable energy sector and North America geography. The recoverable amount considered was the value in use and amounted to $1,141,209 thousand for Solana, as of December 31, 2018. A specific discount rate had been used in each year considering changes in the debt/equity leverage ratio over the useful life of this project, resulting in the use of a range of discount rates between 5.0% and 5.8%. An adverse change in the key assumptions which are individually used for the valuation could lead to future impairment recognition; specifically, a 5% decrease in generation over the entire remaining useful life (PPA) of the project would have generated an additional impairment of approximately $72 million. An increase of 50 basis points in the discount rate would have lead to an additional impairment of approximately $50 million. In addition, the Company identified a triggering event of impairment for Mojave as a result of the negative credit outlooks of Pacific Gas and Electric Company, the offtaker of the plant, as of December 31, 2018. This project was within the Renewable energy sector and North America geography. The Company therefore performed an impairment test as of December 31, 2018, which resulted in the recoverable amount (value in use) exceeding the carrying amount of the asset by 10%. To determine the value in use of the asset, a specific discount rate had been used in each year considering changes in the debt/equity leverage ratio over the useful life of this project, resulting in the use of a range of discount rates between 4.6% and 5.8%. An adverse change in the key assumptions which are individually used for the valuation would not have lead to future impairment recognition; neither in case of a 5% decrease in generation over the entire remaining useful life (PPA) of the project nor in case of an increase of 50 basis points in the discount rate.

Investments carried under the e

Investments carried under the equity method	12 Months Ended
	Dec. 31, 2019
Investments carried under the equity method [Abstract]
Investments carried under the equity method	Note 7.- Investments carried under the equity method The table below shows the breakdown and the movement of the investments held in associates for 2019 and 2018: Investments in associates 2019 2018 Initial balance 53,419 55,784 Share of (loss)/profit 7,457 5,231 Dividend distribution (30,528 ) (4,463 ) Equity distribution (6,252 ) (122 ) Change in the scope of the consolidated financial statements (Note 5) 113,897 - Others (incl. currency translation differences) 1,932 (3,011 ) Final balance 139,925 53,419 During 2019, investments carried under the equity method increase primarily due to the acquisition of Amherst Island ($97.2 million) and Monterrey ($16.6 million) (see Note 5). The increase has been partially offset by the dividend distributions of Amherst Island Partnership ($25.9 million) and Geida Tlemcen S.L.($4.6 million). The tables below show a breakdown of stand-alone amounts of assets, revenues and profit and loss as well as other information of interest for the years 2019 and 2018 for the associated companies: Company % Shares Non- current assets Current assets Non- current liabilities Current liabilities Revenue Operating profit/ (loss) Net profit/ (loss) Investment under the equity method Evacuación Valdecaballeros, S.L. 57.16 18,584 1,268 13,145 783 694 (277 ) (303 ) 2,348 Myah Bahr Honaine, S.P.A.(*) 25.50 184,332 63,148 71,614 13,562 51,504 33,372 30,186 45,222 Pectonex, R.F. Proprietary Limited 50.00 3,074 - - 2 - (190 ) (190 ) 1,391 Evacuación Villanueva del Rey, S.L 40.02 2,946 107 1,841 225 - 47 - - Ca Ku A1, S.A.P.I de CV (PTS) 5.00 486,179 55,423 - 543,077 - (39 ) (495 ) - Pemcorp SAPI de CV (**) 30.00 125,301 72,669 197,324 5,090 32,302 5,737 (10.073 ) 17,179 ABY Infraestructuras S.L.U. 20.00 - 59 - - - (104 ) (101 ) 11 Windlectric Inc (***) 30.00 319,041 10,655 232,938 22,424 24,867 11,125 (6,537 ) 73,693 Other renewable energy joint ventures (****) 50.00 47 146 6 70 - (46 ) (46 ) 81 As of December 31, 2019 139,925 Company % Shares Non- current assets Current assets Non- current liabilities Current liabilities Revenue Operating profit/ (loss) Net profit/ (loss) Investment under the equity method Evacuación Valdecaballeros, S.L. 57.16 19,679 820 381 420 320 (668 ) (693 ) 8,773 Myah Bahr Honaine, S.P.A.(*) 25.50 186,484 63,224 81,942 13,184 50,118 25,778 22,193 43,161 Pectonex, R.F. Proprietary Limited 50.00 3,186 - - 2 - (209 ) (209 ) 1,485 Evacuación Villanueva del Rey, S.L 40.02 3,190 257 2,021 383 - 44 - - Ca Ku A1, S.A.P.I de CV (PTS) 5.00 284,375 10,951 - 295,865 - 3 (624 ) - As of December 31, 2018 53,419 The Company has no control over Evacuación Valdecaballeros, S.L. as all relevant decisions of this company require the approval of a minimum of shareholders accounting for more than 75% of the shares. None of the associated companies referred to above is a listed company. (*) Myah Bahr Honaine, S.P.A., the project entity, is 51% owned by Geida Tlemcen, S.L. which is accounted for using the equity method in these consolidated financial statements. Share of profit of Myah Bahr Honaine S.P.A. included in these consolidated financial statements amounts to $7,697 thousand in 2019 and $5,659 thousand in 2018. (**) Pemcorp SAPI de CV, Monterrey´s project entity, is 100% owned by Arroyo Netherlands II B.V. which is accounted for under the equity method in these consolidated financial statements (Note 5). Arroyo Netherlands II B.V. is 30% owned by Atlantica. Share of profit of Pemcorp SAPI de CV included in these consolidated financial statements amounts to $521 thousand in 2019. (***) Windlectric Inc., the project entity, is owned 100% by Amherst Island Partnership which is accounted for under the equity method (Note 5). (****) Other renewable energy joint ventures correspond to investments made in the following entities located in Colombia: AC Renovables Sol 1 SAS Esp, PA Renovables Sol 1 SAS Esp, SJ Renovables Sun 1 SAS Esp and SJ Renovables Wind 1 SAS Esp.

Financial instruments by catego

Financial instruments by category	12 Months Ended
	Dec. 31, 2019
Financial instruments by category [Abstract]
Financial instruments by category	Note 8.- Financial instruments by category Financial instruments are primarily deposits, derivatives, trade and other receivables and loans. Financial instruments by category (current and non-current), reconciled with the statement of financial position as of December 31, 2019 and 2018 are as follows: Notes Amortized cost Fair Value Through Other Comprehensive Income Fair value Through profit or loss Balance as of December 31, 2019 Derivative assets 9 - - 5,230 5,230 Investment in Ten West Link - 9,874 - 9,874 Investment in Rioglass - - 7,000 7,000 Other financial investments 288,060 - - 288,060 Trade and other receivables 11 317,568 - - 317,568 Cash and cash equivalents 12 562,795 - - 562,795 Total financial assets 1,168,423 9,874 12,230 1,190,527 Corporate debt 14 723,791 - - 723,791 Project debt 15 4,852,348 - - 4,852,348 Related parties – non-current 10 17,115 - - 17,115 Trade and other current liabilities 17 128,062 - - 128,062 Derivative liabilities 9 - - 298,744 298,744 Total financial liabilities 5,721,316 - 298,744 6,020,060 Notes Amortized cost Fair Value Through Other Comprehensive Income Fair value Through profit or loss Balance as of December 31, 2018 Derivative assets 9 - - 13,153 13,153 Investment in Ten West Link - 6,034 - 6,034 Other financial investments 274,318 - - 274,318 Trade and other receivables 11 236,395 - - 236,395 Cash and cash equivalents 12 631,542 - - 631,542 Total financial assets 1,142,255 6,034 13,153 1,161,441 Corporate debt 14 684,073 - - 684,073 Project debt 15 5,091,114 - - 5,091,114 Related parties – non-current 10 33,675 - - 33,675 Trade and other current liabilities 17 192,033 - - 192,033 Derivative liabilities 9 - - 279,152 279,152 Total financial liabilities 6,000,895 - 279,152 6,280,047 Other financial investments include primarily the short-term portion of contracted concessional assets (see Note 6) for $160.6 million as of December 31, 2019 and for $159.1 million as of December 31, 2018. Investment in Ten West Link is a 12.5% interest in a 114-mile transmission line in the U.S., currently under development. Investment in Rioglass corresponds to 15.12% of the equity interest of Rioglass, a multinational solar power and renewable energy technology manufacturer, acquired in May 2019 by the Company.

Derivative financial instrument

Derivative financial instruments	12 Months Ended
	Dec. 31, 2019
Derivative financial instruments [Abstract]
Derivative financial instruments	Note 9.- Derivative financial instruments The breakdowns of the fair value amount of the derivative financial instruments as of December 31, 2019 and 2018 are as follows: Balance as of December 31, 2019 Balance as of December 31, 2018 Assets Liabilities Assets Liabilities Interest rate cash flow hedge 1,619 298,744 9,923 279,152 Foreign exchange derivatives instruments 3,610 - 3,230 - Total 5,230 298,744 13,153 279,152 The derivatives are primarily interest rate cash-flow hedges. All are classified as non-current assets or non-current liabilities, as they hedge long-term financing agreements. Additionally, the Company owns currency options with leading international financial institutions, which guarantee minimum Euro-U.S. dollar exchange rates. The strategy of the Company is to hedge the exchange rate for the net distributions from its Spanish assets after deducting euro-denominated interest payments and euro-denominated general and administrative expenses. Through currency options, the strategy of the Company is to hedge 100% of its euro-denominated net exposure for the next 12 months and 75% of its euro denominated net exposure for the following 12 months, on a rolling basis. Change in fair value of these foreign exchange derivatives instruments are recorded in the consolidated income statement. As stated in Note 3 to these consolidated financial statements, the general policy is to hedge variable interest rates of financing agreements purchasing call options (caps) in exchange of a premium to fix the maximum interest rate cost and contracting floating to fixed interest rate swaps. As a result, the notional amounts hedged, strikes contracted and maturities, depending on the characteristics of the debt on which the interest rate risk is being hedged, can be diverse: - Project debt in Euros: the Company hedges between 81% and 100% of the notional amount, maturities until 2030 and average guaranteed interest rates of between 0.89% and 4.87%. - Project debt in U.S. dollars: the Company hedges between 70% and 100% of the notional amount, including maturities until 2034 and average guaranteed interest rates of between 1.98% and 5.27%. The table below shows a breakdown of the maturities of notional amounts of interest rate cash flow hedge derivatives as of December 31, 2019 and 2018. Notionals Balance as of December 31, 2019 Balance as of December 31, 2018 Assets Liabilities Assets Liabilities Up to 1 year 43,266 117,574 42,846 93,440 Between 1 and 2 years 45,955 124,908 45,603 119,568 Between 2 and 3 years 49,259 240,570 48,774 234,572 Subsequent years 455,235 1,697,033 535,774 1,858,061 Total $ 593,715 $ 2,180,085 $ 672,997 $ 2,305,641 The table below shows a breakdown of the maturity of the fair values of interest rate cash flow hedge derivatives as of December 31, 2019 and 2018: Fair value Balance as of December 31, 2019 Balance as of December 31, 2018 Assets Liabilities Assets Liabilities Up to 1 year 118 (18,721 ) 493 (11,848 ) Between 1 and 2 years 128 (19,787 ) 524 (13,231 ) Between 2 and 3 years 140 (21,802 ) 562 (15,151 ) Subsequent years 1,234 (238,434 ) 8,344 (238,922 ) Total $ 1,619 $ (298,744 ) $ 9,923 $ (279,152 ) During 2019, fair value of derivatives decreased mainly due to a decrease in the fair value of interest rate cash-flow hedges resulting from the decrease in future interest rates. The net amount of the fair value of interest rate derivatives designated as cash flow hedges transferred to the consolidated income statement in 2019 is a loss of $55,765 thousand (loss of $67,519 thousand in 2018 and a loss of $70,953 thousand in 2017). Additionally, the net amount of the time value component of the cash flow derivatives fair value recognized in the consolidated income statement for the year 2019, 2018 and 2017 has been a gain of $157 thousand, a loss of $560 thousand and a loss of $860 thousand respectively. The after-tax result accumulated in equity in connection with derivatives designated as cash flow hedges at the years ended December 31, 2019 and 2018, amount to a $73,797 thousand gain and a $95,011 thousand gain respectively.

Related parties

Related parties	12 Months Ended
	Dec. 31, 2019
Related parties [Abstract]
Related parties	Note 10.- Related parties During the normal course of business, the Company has historically conducted operations with related parties consisting mainly of Abengoa´s subsidiaries and non-controlling interests. The transactions were completed at market rates. Further to the sale of its remaining 16.47% stake in the Company to Algonquin on November 27, 2018, Abengoa ceased to fulfill the conditions to be a related party as per IAS 24 - Related Parties Disclosures. Algonquin on its side is a related party since it completed the acquisition of a 25% stake in the Company in March 2018. Details of balances with related parties as of December 31, 2019 and 2018, which therefore do not include balances with Abengoa, are as follows: Balance as of December 31, 2019 2018 Credit receivables (current) 13,350 5,328 Total current receivables with related parties 13,350 5,328 Credit receivables (non-current) 21,355 - Total non-current receivables with related parties 21,355 - Credit payables (current) 23,979 19,352 Total current payables with related parties 23,979 19,352 Credit payables (non-current) 17,115 33,675 Total non-current payables with related parties 17,115 33,675 Current credit receivables as of December 31, 2019 mainly correspond to the short-term portion of the loan to Arroyo Netherland II B.V., the holding company of Pemcorp SAPI de CV., Monterrey´s project entity (Note 5) for $5.0 million and to a dividend to be collected from Amherst Island Partnership for $5.5 million as of December 31, 2019. Non-current credit receivables as of December 31, 2019 correspond to the long-term portion of the loan to Arroyo Netherland II B.V. Credit payables relate to debts with non-controlling interests partners in Kaxu, Solaben 2&3 and Solacor 1&2 for an amount of $35.6 million as of December 31, 2019 ($53.0 million as of December 31, 2018). Current credit payables also include the dividend to be paid from Atlantica Yield Energy Solutions Ltd to Algonquin for $5.4 million as of December 31, 2019. The transactions carried out by entities included in these consolidated financial statements with related parties not included in the consolidation perimeter of Atlantica, for the years ended December 31, 2019, 2018 and 2017 have been as follows: For the twelve-month period ended December 31, 2019 2018 2017 Services rendered - - 3,495 Services received - (101,582 ) (114,416 ) Financial income 978 3,721 74 Financial expenses (195 ) (398 ) (1,154 ) Services received in 2018 and 2017 primarily included operation and maintenance services received by some assets from Abengoa and subsidiaries of Abengoa, which had been related parties during these years. The total amount of the remuneration received by the Board of Directors of the Company, including the CEO, amounts to $2.5 million in 2019 ($3.1 million in 2018), including $1.0 million of annual bonus ($1.0 million in 2018). The decrease of the total remuneration in 2019 is mainly due to the CEO having received a long-term award of $0.8 million in 2018, paid in March 2019. No long-term awards have vested in 2019. None of the directors received any pension remuneration in 2018 nor 2019.

Trade and other receivables

Trade and other receivables	12 Months Ended
	Dec. 31, 2019
Trade and other receivables [Abstract]
Trade and other receivables	Note 11.- Trade and other receivables Trade and other receivable as of December 31, 2019 and 2018, consist of the following: Balance as of December 31, 2019 2018 Trade receivables 242,008 163,856 Tax receivables 50,901 54,959 Prepayments 5,150 5,521 Other accounts receivable 19,508 12,059 Total 317,568 236,395 As of December 31, 2019, and 2018, the fair value of clients and other accounts receivable does not differ significantly from its carrying value. The increase in trade receivables as of December 31, 2019 is primarily due to delays in the collection of receivables from Pemex (ACT) and the Comision Nacional de los Mercados y de la Competencia or “CNMC” (Spanish solar assets). Trade receivables in foreign currency as of December 31, 2019 and 2018, are as follows: Balance as of December 31, 2019 2018 Euro 108,280 91,303 South African Rand 24,289 25,193 Other 4,001 9,884 Total 136,570 126,380

Cash and cash equivalents

Cash and cash equivalents	12 Months Ended
	Dec. 31, 2019
Cash and cash equivalents [Abstract]
Cash and cash equivalents	Note 12.- Cash and cash equivalents The following table shows the detail of Cash and cash equivalents as of December 31, 2019 and 2018: Balance as of December 31, 2019 2018 Cash at bank and on hand - non restricted 223,867 335,114 Cash at bank and on hand - restricted 338,928 296,428 Total 562,795 631,542 Cash includes funds held to satisfy the customary requirements of certain non-recourse debt agreements within the Company´s projects amounting to $339 million as of December 31, 2019 ($296 million as of December 31, 2018). The following breakdown shows the main currencies in which cash and cash equivalent balances are denominated: Balance as of December 31, Currency 2019 2018 U.S. dollar 313,678 328,716 Euro 181,961 228,036 Algerian Dinar 9,301 11,602 South African Rand 47,679 55,257 Others 10,176 7,931 Total 562,795 631,542

Equity

Equity	12 Months Ended
	Dec. 31, 2019
Equity [Abstract]
Equity	Note 13.- Equity As of December 31, 2019, the share capital of the Company amounts to $10,160,167 represented by 101,601,666 ordinary shares completely subscribed and disbursed with a nominal value of $0.10 each, all in the same class and series. Each share grants one voting right. Algonquin completed in 2018 the acquisition from Abengoa of its entire stake in Atlantica, 41.47% of the total shares of the Company, becoming the largest shareholder of the Company. On May 22, 2019, the Company issued our additional 1,384,402 ordinary shares, which were fully subscribed by Algonquin for a total amount of $30,000,000, increasing the stake of Algonquin to 42.27%. Additionally, Algonquin purchased 2,000,000 ordinary shares on May 31, 2019, increasing its stake in Atlantica to 44.2%. Atlantica´s parent company reserves as of December 31, 2019 are made up of share premium account and distributable reserves. Retained earnings primarily include results attributable to Atlantica. Non-controlling interests fully relate to interests held by JGC in Solacor 1 and Solacor 2, by Idae in Seville PV, by Itochu Corporation in Solaben 2 and Solaben 3, by Algerian Energy Company, SPA and Sacyr Agua S.L. in Skikda, by Industrial Development Corporation of South Africa (IDC) and Kaxu Community Trust in Kaxu and by Algonquin Power Co. in AYES Canada (refer to Note 1). Additional information of subsidiaries including material Non-controlling interests as of December 31, 2019 and 2018, are disclosed in Appendix IV. Dividends declared during the year 2019: - On February 26, 2019, the Board of Directors declared a dividend of $0.37 per share corresponding to the fourth quarter of 2018. The dividend was paid on March 22, 2019 for a total amount of $37.1 million - On May 7, 2019, the Board of Directors of the Company approved a dividend of $0.39 per share corresponding to the first quarter of 2019. The dividend was paid on June 14, 2019 for a total amount of $39.6 million. - On August 2, 2019, the Board of Directors of the Company approved a dividend of $0.40 per share corresponding to the second quarter of 2019. The dividend was paid on September 13, 2019 for a total amount of $40.6 million. - On November 5, 2019, the Board of Directors declared a dividend of $0.41 per share corresponding to the third quarter of 2019. The dividend was paid on December 13, 2019 for a total amount of $41.7 million. In addition, as of December 31, 2019, there was no treasury stock and there have been no transactions with treasury stock during the period then ended.

Corporate debt

Corporate debt	12 Months Ended
	Dec. 31, 2019
Corporate debt [Abstract]
Corporate debt	Note 14.- Corporate debt The breakdown of the corporate debt as of December 31, 2019 and 2018 is as follows: Balance as of December 31, Non-current 2019 2018 Credit Facilities with financial entities 695,085 415,168 Total Non-current 695,085 415,168 Balance as of December 31, Current 2019 2018 Credit Facilities with financial entities 789 11,580 Notes and Bonds 27,917 257,325 Total Current 28,706 268,905 On November 17, 2014, the Company issued the Senior Notes due 2019 in an aggregate principal amount of $255,000 thousand (the “2019 Notes”). The 2019 Notes accrued annual interest of 7.00% payable semi-annually beginning on May 15, 2015. The 2019 Notes were fully repaid on May 31, 2019. On February 10, 2017, the Company issued Senior Notes due 2022, 2023, 2024 (the “Note Issuance Facility”), in an aggregate principal amount of €275,000 thousand. The 2022 to 2024 Notes accrue annual interest, equal to the sum of (i) EURIBOR plus (ii) 4.90%, as determined by the Agent. Interest on the Notes are payable in cash quarterly in arrears on each interest payment date. The Company pays interest to the holders of record on each interest payment date. The interest rate on the Note Issuance Facility is fully hedged by two interest rate swaps contracted with Jefferies Financial Services, Inc. with effective date March 31, 2017 and maturity date December 31, 2022, resulting in the Company paying a net fixed interest rate of 5.5% on the Note Issuance Facility. Changes in fair value of these interest rate swaps have been recorded in the consolidated income statement. The Note Issuance Facility is a € denominated liability for which the Company applies net investment hedge accounting. When converted to US$ at US$/€ closing exchange rate, it contributes to reduce the impact in translation difference reserves generated in the equity of these consolidated financial statements by the conversion of the net assets of the Spanish solar assets into US$. On July 20, 2017, the Company signed a credit facility (the “2017 Credit Facility”) for up to €10 million, approximately $11.2 million, which is available in euros or U.S. dollars and was fully drawn down in 2017. Amounts drawn down accrue interest at a rate per year equal to EURIBOR plus 2.25% or LIBOR plus 2.25%, depending on the currency. On December 13, 2019, the terms of the credit facility have been modified and the maturity date has been extended from July 4, 2020 to December 13, 2021 and the new interest rate per year set is EURIBOR plus 2% or LIBOR plus 2%, depending on the currency. As of December 31, 2019, the Company had drawn down an amount of $10.1 million. On May 10, 2018, the Company entered into a $215 million revolving credit facility (the “New Revolving Credit Facility”) with Royal Bank of Canada, as administrative agent and Royal Bank of Canada and Canadian Imperial Bank of Commerce, as issuers of letters of credit. Amounts drawn down accrue interest at a rate per year equal to (A) for Eurodollar rate loans, LIBOR plus a percentage determined by reference to the leverage ratio of the Company, ranging between 1.60% and 2.25% and (B) for base rate loans, the highest of (i) the rate per annum equal to the weighted average of the rates on overnight U.S. Federal funds transactions with members of the U.S. Federal Reserve System arranged by U.S. Federal funds brokers on such day plus ½ of 1.00%, (ii) the U.S. prime rate and (iii) LIBOR plus 1.00%, in any case, plus a percentage determined by reference to the leverage ratio of the Company, ranging between 0.60% and 1.00%. Letters of credit may be issued using up to $70 million of the Revolving Credit Facility. During the month of January 2019, the amount of the Revolving Credit Facility increased from $215 million to $300 million. On August 2, 2019, the amount of the Revolving Credit Facility increased from $300 million to $425 million and the maturity was extended to December 31, 2022 for $387.5 million, while the remaining $37.5 million matures on December 31, 2021. On December 31, 2019, the Company had drawn down a total amount of $81.1 million (net of debt issuance cost). On April 30, 2019, the Company entered into a senior unsecured note facility with a group of funds managed by Westbourne Capital as purchasers of the notes issued thereunder for a total amount of €268 million (the “2019 Note Issuance Facility”). The principal amount was issued in May 24, 2019 and was used to prepay and subsequently cancel in full the aforementioned 2019 Notes and for general corporate purposes. The 2019 Note Issuance Facility includes an upfront fee of 2% paid on drawdown and its maturity date is April 30, 2025. Interest accrue at a rate per annum equal to the sum of 3-month EURIBOR plus 4.50%. The interest rate on the 2019 Note Issuance Facility is fully hedged by an interest rate swap with effective date June 28, 2019 and maturity date June 30, 2022, resulting in the Company paying a net fixed interest rate of 4.2%. The 2019 Note Issuance Facility provides that the Company may capitalize interest on the notes issued thereunder for a period of up to two years from closing at the Company´s discretion, subject to certain conditions. On October 8, 2019, the Company filed a euro commercial paper program (the “Commercial Paper”) with the Alternative Fixed Income Market (MARF) in Spain. The program allows Atlantica to issue short term notes over the next twelve months for up to €50 million, with such notes having a tenor of up to two years. As of the date of this report the Company has issued €25 million under the program at an average cost of 0.66%. The repayment schedule for the corporate debt as of December 31, 2019 is as follows: 2020 2021 2022 2023 2024 Subsequent years Total New Revolving Credit Facility 701 - 81,164 - - - 81,865 Note Issuance Facility 84 - 101,317 100,513 100,413 - 302,327 2017 Credit Facility 4 10,085 - - - - 10,089 2019 Notes Issuance Facility - 7,938 - - - 293,655 301,593 Commercial Paper 27,917 - - - - - 27,917 Total 28,706 18,023 182,481 100,513 100,413 293,655 723,791 The following table details the movement in Corporate debt for the year 2019, split between cash and non-cash items: January 1, 2019 Cash Flow Non-cash changes December 31, 2019 Corporate debt 684,073 6,620 33,098 723,791 The non-cash changes primarily relate to interests accrued and to currency translation differences.

Project debt

Project debt	12 Months Ended
	Dec. 31, 2019
Project debt [Abstract]
Project debt	Note 15.- Project debt The main purpose of the Company is the long-term ownership and management of contracted concessional assets, such as renewable energy, efficient natural gas, electric transmission lines and water assets, which are financed through project debt. This note shows the project debt linked to the contracted concessional assets included in Note 6 of these consolidated financial statements. Project debt is generally used to finance contracted assets, exclusively using as a guarantee the assets and cash flows of the company or group of companies carrying out the activities financed. In most of the cases, the assets and/or contracts are set up as a guarantee to ensure the repayment of the related financing. In addition, the cash of the Company´s projects includes funds held to satisfy the customary requirements of certain non-recourse debt agreements and other restricted cash for an amount of $339 million as of December 31, 2019 ($296 million as of December 31, 2018). Compared with corporate debt, project debt has certain key advantages, including a greater leverage and a clearly defined risk profile. The variations for 2019 and 2018 of project debt have been the following: Project debt - long term Project debt - short term Total Balance as of December 31, 2018 4,826,659 264,455 5,091,114 Increases 53,222 280,005 333,226 Decreases (19,272 ) (516,147 ) (535,418 ) Currency translation differences (33,718 ) (2,855 ) (36,574 ) Reclassifications (756,981 ) 756,981 - Balance as of December 31, 2019 4,069,909 782,439 4,852,348 The line “Increases” includes primarily accrued interests for the year. The decrease of Project debt during the year 2019 is primarily due to the contractual payments of debt for the year and the partial repayment of Solana debt using the indemnity received from Abengoa for $22.2 million (Note 10). Interests accrued are offset by a similar amount of interests paid during the year. Due to the PG&E Corporation and its regulated utility subsidiary, Pacific Gas and Electric Company (“PG&E”), chapter 11 filings in January 2019, a default of the PPA agreement with PG&E occurred. Since PG&E failed to assume the PPA within 180 days from the commencement of the PG&E’s chapter 11 proceedings, a technical event of default was triggered under the Mojave project finance agreement in July 2019. Although the Company does not contemplate the scenario under which the DOE would declare the acceleration of debt repayment, the project debt agreement does not have an unconditional right to defer the settlement of the debt for at least twelve months as of December 31, 2019, as the event of default provision make that right not totally unconditional, and therefore the debt has been presented as current in these consolidated financial statements in accordance with International Accounting Standards 1 (“IAS 1”), “Presentation of Financial Statements”. Project debt - long term Project debt - short term Total Balance as of December 31, 2017 5,228,917 246,291 5,475,208 Increases 105,466 288,541 393,007 Decreases (98,450 ) (522,317 ) (620,767 ) First time application of IFRS 9 effective January 1, 2018 (39,599 ) - (39,599 ) Debt refinancing IFRS 9 impact (36,642 ) - (36,642 ) Change in the scope of the consolidated financial statements (Note 5) 79,016 2,346 81,362 Currency translation differences (150,019 ) (12,436 ) (162,455 ) Reclassifications (262,030 ) 262,030 - Balance as of December 31, 2018 4,826,659 264,455 5,091,114 The line “Increases” includes primarily accrued interests for the year. Main variations in Project debt during the year 2018 were the result of: - A net decrease primarily due to the contractual payments of debt for the year and the partial repayment of Solana debt using the indemnity received from Abengoa during the year 2018 for $61.5 million (see Note 10). Interests accrued are offset by a similar amount of interests paid during the year; - The impact of the first application of IFRS 9, ´Financial instruments´ from January 1, 2018; - The impact of the refinancing of the debts of Helios 1/2 and Helioenergy 1/2 on May 18, 2018 and June 26, 2018 respectively. The terms of the new debts are not substantially different from the original debts refinanced and therefore the exchange of debts instruments does not qualify for an extinguishment of the original debts under IFRS 9, ´Financial instruments´. When there is a refinancing with a non-substantial modification of the original debt, there is a gain or loss recorded in the income statement. This gain or loss is equal to the difference between the present value of the cash flows under the original terms of the former financing and the present value of the cash flows under the new financing, discounted both at the original effective interest rate. In this respect, the Company recorded a $36.6 million financial income in the profit and loss statement of the consolidated financial statements (see Note 21); - The acquisition of assets and the consolidation of its debt during the year (see Note 5). The repayment schedule for project debt in accordance with the financing arrangements and assuming there will be no acceleration of the Mojave debt, as of December 31, 2019, is as follows and is consistent with the projected cash flows of the related projects: 2020 2021 2022 2023 2024 Subsequent years Total Interest Repayment Nominal repayment 12,799 256,620 262,787 293,642 319,962 335,067 3,371,724 4,852,348 Current and non-current loans with credit entities include amounts in foreign currencies for a total of $2,291,262 thousand as of December 31, 2019 ($2,464,352 thousand as of December 31, 2018). The following table details the movement in Project debt for the year 2019, split between cash and non-cash items: January 1, 2019 Cash Flow Non-cash changes December 31, 2019 Project debt 5,091,114 (531,726 ) 292,960 4,852,348 The non-cash changes primarily relate to interests accrued and to currency translation differences. The equivalent in U.S. dollars of the most significant foreign-currency-denominated debts held by the Company is as follows: Balance as of December 31, Currency 2019 2018 Euro 1,882,618 2,049,892 Algerian Dinar 24,331 29,545 South African Rand 384,313 384,915 Total 2,291,262 2,464,352 All of the Company’s financing agreements have a carrying amount close to its fair value.

Grants and other liabilities

Grants and other liabilities	12 Months Ended
	Dec. 31, 2019
Grants and other liabilities [Abstract]
Grants and other liabilities	Note 16.- Grants and other liabilities Grants and other liabilities as of December 31, 2019 and December 31, 2018 are as follows: Balance as of December 31, 2019 2018 Grants 1,087,553 1,150,805 Other liabilities 554,199 507,321 Grant and other non-current liabilities 1,641,752 1,658,126 As of December 31, 2019, the amount recorded in Grants corresponds primarily to the ITC Grant awarded by the U.S. Department of the Treasury to Solana and Mojave for a total amount of $707 million ($739 million as of December 31, 2018), which was primarily used to fully repay the Solana and Mojave short-term tranche of the loan with the Federal Financing Bank. The amount recorded in Grants as a liability is progressively recorded as other income over the useful life of the asset. The remaining balance of the “Grants” account corresponds to loans with interest rates below market rates for Solana and Mojave for a total amount of $379 million ($410 million as of December 31, 2018). Loans with the Federal Financing Bank guaranteed by the Department of Energy for these projects bear interest at a rate below market rates for these types of projects and terms. The difference between proceeds received from these loans and its fair value, is initially recorded as “Grants” in the consolidated statement of financial position, and subsequently recorded in “Other operating income” starting at the entry into operation of the plants. Total amount of income for these two types of grants for Solana and Mojave is $59.0 million and $59.3 million for the year ended December 31, 2019 and 2018, respectively. Other liabilities mainly relate to the investment from Liberty Interactive Corporation (‘Liberty’) made on October 2, 2013 for an amount of $300 million. The investment was made in the parent company of the project entity, in exchange for the right to receive a large part of taxable losses and distributions until such time when Liberty reaches a certain rate of return, or the Flip Date. Given the underperformance of the asset in the last years, the Company cannot assure the Flip Date will occur or when it will occur. The company expects potential cash distributions from Solana to go mostly or entirely to Liberty in the upcoming years. If the Flip Date never occurs or if there is a delay longer than currently anticipated, this will adversely affect the cash flows the Company expected from that project. In addition, the Company signed an option to acquire, until April 30, 2020, Liberty’s equity interest in Solana. According to the stipulations of IAS 32 and in spite of the fact that the investment of Liberty is in shares, it does not qualify as equity and has been classified as a liability as of December 31, 2019 and 2018. The liability is recorded in Grants and other liabilities for a total amount of $380 million ($358 million as of December 31, 2018) and its current portion is recorded in other current liabilities for the remaining amount (see Note 17). This liability has been initially valued at fair value, calculated as the present value of expected cash-flows during the useful life of the concession, and is then measured at amortized cost in accordance with the effective interest method, considering the most updated expected future cash-flows. Additionally, other liabilities include $54 million of finance lease liabilities and $60 million of dismantling provision as of December 31, 2019 ($57 million and $57 million as of December 31,2018, respectively).

Trade payables and other curren

Trade payables and other current liabilities	12 Months Ended
	Dec. 31, 2019
Trade payables and other current liabilities [Abstract]
Trade payables and other current liabilities	Note 17.- Trade payables and other current liabilities Trade payables and other current liabilities as of December 31, 2019 and 2018 are as follows: Balance as of December 31, Item 2019 2018 Trade accounts payables 52,062 109,430 Down payments from clients 565 6,289 Liberty (see Note 16) 41,032 37,119 Other accounts payable 34,403 39,195 Total 128,062 192,033 Trade accounts payables mainly relate to the operating and maintenance of the plants. Nominal values of Trade payables and other current liabilities are considered to approximately equal to fair values and the effect of discounting them is not significant.

Income Tax

Income Tax	12 Months Ended
	Dec. 31, 2019
Income Tax [Abstract]
Income Tax	Note 18.- Income Tax All the companies of Atlantica file income taxes according to the tax regulations in force in each country on an individual basis or under consolidation tax regulations. The consolidated income tax has been calculated as an aggregation of income tax expenses/income of each individual company. In order to calculate the taxable income of the consolidated entities individually, the accounting result is adjusted for temporary and permanent differences, recording the corresponding deferred tax assets and liabilities. At each consolidated income statement date, a current tax asset or liability is recorded, representing income taxes currently refundable or payable. Deferred income taxes reflect the net tax effects of temporary differences between the carrying amount of assets and liabilities for financial statement and income tax purposes, as determined under enacted tax laws and rates. Income tax payable is the result of applying the applicable tax rate in force to each tax-paying entity, in accordance with the tax laws in force in the country in which the entity is registered. Additionally, tax deductions and credits are available to certain entities, primarily relating to inter-company trades and tax treaties between various countries to prevent double taxation. The Company offsets deferred tax assets and deferred tax liabilities in each entity where the latter has a legally enforceable right to set off current tax assets against current tax liabilities, and the deferred tax assets and liabilities relate to income taxes levied by the same taxation authority. As of December 31, 2019, and 2018, the analysis of deferred tax assets and deferred tax liabilities is as follows: Deferred tax assets Balance as of December 31, Concept 2019 2018 Net tax credits for tax losses carryforwards 61,693 55,835 Temporary differences on derivatives financial instruments 86,096 79,865 Other temporary differences 177 366 Total deferred tax assets 147,966 136,066 Most of the net tax credits for tax losses carryforwards corresponds to Peru, South Africa and solar plants in Spain as of December 31, 2019. Temporary differences for derivatives financial instruments are mainly due to ACT ($17 million) and solar plants in Spain ($61 million). In relation to tax losses carryforwards and deductions pending to be used recorded as deferred tax assets, the entities evaluate their recoverability projecting forecasted taxable result for the upcoming years and taking into account their tax planning strategy. Deferred tax liabilities reversals are also considered in these projections, as well as any limitation established by tax regulations in force in each tax jurisdiction. Deferred tax liabilities Balance as of December 31, Concept 2019 2018 Temporary differences tax/book amortization 145,166 126,792 Other temporary differences tax/book value of contracted concessional assets 83,481 73,793 Other temporary differences 20,349 10,415 Total deferred tax liabilities 248,996 211,000 As of December 31, 2019 and 2018, temporary differences as a result of accelerated tax amortization resulted for some entities in a net deferred tax liability position. These are primarily due to Solana and Mojave ($45 million in 2019 and $55 million in 2018) and solar plants in Spain ($100 million in 2019 and $74 million in 2018). Other temporary differences between the tax and book value of contracted concessional assets, which resulted in a net deferred tax liability position relate primarily to ACT in both years. The movements in deferred tax assets and liabilities during the years ended December 31, 2019 and 2018 were as follows: Deferred tax assets Amount As of December 31, 2017 165,136 First application of IFRS 9 effective January 1, 2018 11,811 Increase/(decrease) through the consolidated income statement (24,195 ) Increase/(decrease) through other consolidated comprehensive income (equity) (10,685 ) Other movements (6,001 ) As of December 31, 2018 136,066 Increase/(decrease) through the consolidated income statement 5,809 Increase/(decrease) through other consolidated comprehensive income (equity) 6,147 Other movements (56 ) As of December 31, 2019 147,966 Deferred tax liabilities Amount As of December 31, 2017 186,583 First application of IFRS 9 effective January 1, 2018 8,849 Increase/(decrease) through the consolidated income statement 17,996 Change in the scope of the consolidated financial statements (Note 5) 590 Other movements (3,018 ) As of December 31, 2018 211,000 Increase/(decrease) through the consolidated income statement 31,678 Change in the scope of the consolidated financial statements (Note 5) 2,539 Other movements 3,779 As of December 31, 2019 248,996 Details of income tax for the years ended December 31, 2019, 2018 and 2017 are as follows: For the twelve-month period ended December 31, Item 2019 2018 2017 Current tax (5,081 ) (468 ) (1,998 ) Deferred tax (25,869 ) (42,191 ) (117,839 ) - relating to the origination and reversal of temporary differences (25,869 ) (42,191 ) (98,508 ) - relating to changes in tax rates - - (19,331 ) Total income tax benefit/(expense) (30,950 ) (42,659 ) (119,837 ) The reconciliation between the theoretical income tax resulting from applying an average statutory tax rate to profit/(loss) before income tax and the actual income tax expense recognized in the consolidated income statements for the years ended December 31, 2019, 2018 and 2017, are as follows: For the year ended December 31, Concept 2019 2018 2017 Consolidated income / (loss) before taxes 105,558 97,928 14,950 Average statutory tax rate 25 % 30 % 30 % Corporate income tax at average statutory tax rate (26,390 ) (29,378 ) (4,485 ) Income tax of associates, net 1,808 1,639 1,765 Differences in foreign tax rates (7,076 ) 752 3,304 Permanent differences 11,220 5,385 19,324 Incentives, deductions, and unrecognized tax losses carryforwards (14,161 ) (22,972 ) (20,994 ) Change in corporate income tax - - (19,331 ) U.S. Internal Revenue Code Section 382 - - (96,328 ) Other non-taxable income/(expense) 3,649 1,915 (3,092 ) Corporate income tax (30,950 ) (42,659 ) (119,837 ) The average statutory tax rate used by the Company changed in 2019 considering some changes in the statutory tax rate of some geographies over the past years. Permanent differences in 2019, 2018 and 2017 are mainly due to ACT (Mexico). The main implications derived from the Tax Cuts and Jobs Act enacted in December 2017 in the U.S. entities are: - A reduction of the Federal income tax rate from 35% to 21%, effective since January 1, 2018 which effect on the deferred tax assets and liabilities resulted in a $19 million loss in the year 2017; - A limitation of the deduction for net interest expense of all businesses in the U.S. The new limitation is imposed on net interest expense that exceeds 30% of EBITDA from 2018 to 2021, and 30% of EBIT from 2022 onwards. Interests disallowed would be deducted in the future in the event that those limits are not exceeded. After having considered the impacts of Section 382, the Company does not expect significant negative effects from this net interest expense limitation; - NOLs arising in tax years beginning after 2017 would be limited to 80% of taxable income. For new NOLs recognized after 2017, an indefinite carryforward would be allowed. The limitation of 80% is not applicable for NOLs generated before 2018. For existing NOLs before 2018, a carryforward of 20 years is still applicable. The new limitation does not trigger adverse tax effects to the U.S. subsidiaries of the Company considering the amount of NOLs to be generated in upcoming years and the projected amount of taxable income of these entities after having considered the impacts of Section 382; - Base erosion anti-abuse tax (BEAT): The BEAT applies to certain U.S. corporations that make relevant deductible payments to foreign affiliates. The excess of 10% of a corporation’s taxable income increased by those payments to foreign related parties over its regular tax liability, will be the base erosion tax due. BEAT provisions do not trigger adverse tax consequences for the U.S. subsidiaries of the Company considering the amount of payments made to foreign affiliates for management and support services; - Potential tax erosion in the U.S.: The Company does not expect to have material adverse tax consequences in the U.S. subsidiaries as a result of the measures previously described.

Commitments, third-party guaran

Commitments, third-party guarantees, contingent assets and liabilities	12 Months Ended
	Dec. 31, 2019
Commitments, third-party guarantees, contingent assets and liabilities [Abstract]
Commitments, third-party guarantees, contingent assets and liabilities	Note 19.- Commitments, third-party guarantees, contingent assets and liabilities Contractual obligations The following tables shows the breakdown of the third-party commitments and contractual obligations as of December 31, 2019 and 2018: 2019 Total 2020 2021 and 2022 2023 and 2024 Subsequent Corporate debt 723,791 28,706 200,504 200,926 293,655 Loans with credit institutions (project debt) 4,105,915 241,116 504,921 598,837 2,761,041 Notes and bonds (project debt) 746,433 28,304 51,508 56,192 610,429 Purchase commitments* 2,991,432 129,595 278,418 269,632 2,313,787 Accrued interest estimate during the useful life of loans 2,472,070 294,676 549,320 471,535 1,156,539 2018 Total 2019 2020 and 2021 2022 and 2023 Subsequent Corporate debt 684,073 268,905 107,560 205,258 102,350 Loans with credit institutions (project debt) 4,314,307 233,214 476,191 571,374 3,033,528 Notes and bonds (project debt) 776,807 31,241 49,445 54,879 641,242 Purchase commitments* 3,082,495 131,417 264,461 259,775 2,426,842 Accrued interest estimate during the useful life of loans 2,743,132 314,984 565,040 492,932 1,370,176 The figures shown in the tables above do not include equity investments that the Company may be committed to realize in the future, if certain conditions are met, such as equity investments in the PTS project. *Purchase commitments included lease commitments for $93.0 million as of December 31, 2019 ($97.4 million as of December 31, 2018), of which $5.1 million is due within one year and $87.9 million thereafter as of December 31, 2019 ($5.4 million due within one year and $92.0 million thereafter as of December 31, 2018). Third-party guarantees At the close of 2019 the overall sum of Bank Bond and Surety Insurance directly deposited by the subsidiaries of the Company as a guarantee to third parties (clients, financial entities and other third parties) amounted to $38.2 million attributed to operations of technical nature ($32.4 million as of December 31, 2018). In addition, Atlantica Yield plc issued guarantees amounting to $130.1 million as of December 31, 2019 ($60.5 million as of December 31, 2018). Guarantees issued by Atlantica Yield plc correspond mainly to guarantees provided to off-takers in PPAs, guarantees replacing debt service reserve accounts and guarantees for points of access for renewable projects, which have been partially canceled as of the date of this report. Legal Proceedings On October 17, 2016, ACT received a request for arbitration from the International Court of Arbitration of the International Chamber of Commerce presented by Pemex. Pemex was requesting compensation for damages caused by a fire that occurred in their facilities during the construction of the ACT cogeneration plant in December 2012, for a total amount of approximately $20 million. On July 5, 2017, Seguros Inbursa, the insurer of Pemex, joined as a second claimant in the process. On December 19, 2018 the parties of the arbitration executed a settlement agreement to finalize the claim without any financial impact for ACT. On March 8, 2019 the ICC arbitration tribunal confirmed the settlement agreement and the arbitration was terminated. A number of Abengoa’s subcontractors and insurance companies that issued bonds covering Abengoa’s obligations under such contracts in the U.S. have included some of the non-recourse subsidiaries of Atlantica in the U.S. as co-defendants in claims against Abengoa. Generally, the subsidiaries of Atlantica have been dismissed as defendants at early stages of the processes. With respect to a claim addressed by a group of insurance companies to a number of Abengoa’s subsidiaries and to Solana for Abengoa related losses of approximately $20 million that could increase, according to the insurance companies, up to a maximum of approximately $200 million if all their exposure resulted in losses, Atlantica reached an agreement with all but one of the above-mentioned insurance companies, under which they agreed to dismiss their claims in exchange for payments of approximately $4.3 million, which were paid in 2018. The insurance company that did not join the agreement has temporarily stopped legal actions against Atlantica, and Atlantica does not expect this particular claim to have a material adverse effect on its business. In addition, an insurance company covering certain Abengoa’s obligations in Mexico has claimed certain amounts related to a potential loss. This claim is covered by existing indemnities from Abengoa. Nevertheless, the Company has reached an agreement under which Atlantica´s maximum theoretical exposure would in any case be limited to approximately $35 million, including $2.5 million to be held in an escrow account. On January 2019, the insurance company executed $2.5 million from the escrow account and Abengoa reimbursed such amount according to the existing indemnities in force between Atlantica and Abengoa. The payments by Atlantica would only happen if and when the actual loss has been confirmed, Abengoa has not fulfilled their obligations and after arbitration, if the Company initiates it. The Company is not a party to any other significant legal proceeding other than legal proceedings arising in the ordinary course of its business. The Company is party to various administrative and regulatory proceedings that have arisen in the ordinary course of business. While the Company does not expect these proceedings, either individually or in the aggregate, to have a material adverse effect on its financial position or results of operations, because of the nature of these proceedings the Company is not able to predict their ultimate outcomes, some of which may be unfavorable to the Company. Other matters Abengoa maintains a number of obligations under EPC, O&M and other contracts, as well as indemnities covering certain potential risks. Additionally, Abengoa represented that further to the accession to its restructuring agreement, Atlantica would not be a guarantor of any obligation of Abengoa with respect to third parties and agreed to indemnify the Company for any penalty claimed by third parties resulting from any breach in such representations. The Company has contingent assets, which have not been recognized as of December 31, 2019, related to the obligations of Abengoa referred above, which result and amounts will depend on the occurrence of uncertain future events. In particular as of April 26, 2018 and November 27, 2018 Abengoa agreed to pay Atlantica certain amounts subject to conditions which are beyond the control of the Company. The Company entered into a Financial Support Agreement on June 13, 2014, under which Abengoa agreed to maintain any guarantees and letters of credit that have been provided by it on behalf of or for the benefit of Atlantica and its affiliates for a period of five years. This agreement with Abengoa expired in June 2019, and Abengoa’s commitment to maintain guarantees and letters of credit currently outstanding in the Company´s affiliates´ favor expired, as well. The Company replaced all the guarantees where necessary.

Other operating income and expe

Other operating income and expenses	12 Months Ended
	Dec. 31, 2019
Other operating income and expenses [Abstract]
Other operating income and expenses	Note 20.- Other operating income and expenses The table below shows the detail of Other operating income and expenses for the years ended December 31, 2019, 2018 and 2017: For the twelve-month year ended December 31, Other operating income 2019 2018 2017 Grants 59,142 59,421 59,707 Income from various services and insurance proceeds 34,632 34,181 21,137 Income from the purchase of the long-term operation and maintenance payable to Abengoa - 38,955 - Total 93,774 132,557 80,844 For the twelve-month year ended December 31, Other operating expenses 2019 2018 2017 Raw materials and consumables used (9,719 ) (10,648 ) (16,983 ) Leases and fees (1,850 ) (1,716 ) (6,641 ) Operation and maintenance (116,018 ) (145,857 ) (129,873 ) Independent professional services (41,579 ) (43,229 ) (36,178 ) Supplies (25,823 ) (25,947 ) (20,350 ) Insurance (23,971 ) (24,227 ) (24,289 ) Levies and duties (34,844 ) (37,439 ) (52,409 ) Other expenses (7,971 ) (21,579 ) (14,721 ) Total (261,776 ) (310,642 ) (301,444 ) Grants income mainly relate to ITC cash grants and implicit grants recorded for accounting purposes in relation to the FFB loans with interest rates below market rates in Solana and Mojave projects (Note 16). Other operating income in 2018 includes $39.0 million one-time gain in relation to the purchase from Abengoa of the long-term operation and maintenance payable accrued for the period up to December 31, 2017.

Financial income and expenses

Financial income and expenses	12 Months Ended
	Dec. 31, 2019
Financial income and expenses [Abstract]
Financial income and expenses	Note 21.- Financial income and expenses The following table sets forth financial income and expenses for the years ended December 31, 2019, 2018 and 2017: For the year ended December 31, Financial income 2019 2018 2017 Interest income from loans and credits 3,665 36,296 325 Interest rates benefits derivatives: cash flow hedges 456 148 682 Total 4,121 36,444 1,007 For the year ended December 31, Financial expenses 2019 2018 2017 Expenses due to interest: - Loans from credit entities (259,416 ) (256,736 ) (253,660 ) - Other debts (89,256 ) (100,057 ) (137,562 ) Interest rates losses derivatives: cash flow hedges (59,318 ) (68,226 ) (72,495 ) Total (407,990 ) (425,019 ) (463,717 ) Financial income from loans and credits in 2018 primarily includes a non-monetary financial income of $36.6 million resulting from the refinancing of the debts of Helios 1&2 and Helioenergy 1&2 in the second quarter of 2018 (Note 15). Interests from other debts are primarily interests on the notes issued by ATS, ATN and Solaben Luxembourg and interests related to the investment from Liberty. The decrease in 2019 and 2018 are primarily due to a lower increase of the amortized cost of the Liberty debt compared to the previous year for $16 million and $23 million respectively (Note 16). Losses from interest rate derivatives designated as cash flow hedges correspond primarily to transfers from equity to financial expense when the hedged item is impacting the consolidated income statement. Other net financial income and expenses The following table sets out Other net financial income and expenses for the years 2019, 2018 and 2017: For the year ended December 31, Other financial income / (expenses) 2019 2018 2017 Dividend from ACBH (Brazil) - - 10,383 Other financial income 14,152 14,431 28,809 Other financial losses (15,305 ) (22,666 ) (20,758 ) Total (1,153 ) (8,235 ) 18,434 According to an agreement reached with Abengoa in the third quarter of 2016, Abengoa acknowledged that Atlantica Yield is the legal owner of the dividends declared on February 24, 2017 and retained from Abengoa amounting to $10.4 million. As a result, the Company recorded $10.4 million as Other financial income on 2017 in accordance with the accounting treatment previously given to the ACBH dividend. Other financial income in 2019 and 2018 are primarily interests on deposits and on loan granted to third parties. In 2017, it included a $16.2 million income as a result of the termination of the currency swap agreement with Abengoa. Other financial losses primarily include expenses for guarantees and letters of credit, wire transfers, other bank fees and other minor financial expenses.

Earnings per share

Earnings per share	12 Months Ended
	Dec. 31, 2019
Earnings per share [Abstract]
Earnings per share	Note 22.- Earnings per share Basic earnings per share for the year 2019 has been calculated by dividing the profit/(loss) attributable to equity holders of the company by the number of shares outstanding. Diluted earnings per share equals basic earnings per share for the years presented. For the year ended December 31, Item 2019 2018 2017 Profit/(loss) from continuing operations attributable to Atlantica Yield Plc. 62,135 41,596 (111,804 ) Average number of ordinary shares outstanding (thousands) - basic and diluted 101,063 100,217 100,217 Earnings per share from continuing operations (US dollar per share) - basic and diluted 0.61 0.42 (1.12 ) Earnings per share from profit/ (loss) for the period (US dollar per share) - basic and diluted 0.61 0.42 (1.12 )

Other information

Other information	12 Months Ended
	Dec. 31, 2019
Other information [Abstract]
Other information	Note 23.- Other information 23.1 Restricted Net assets Certain of the consolidated entities are restricted from remitting certain funds to Atlantica Yield plc. as a result of a number of regulatory, contractual or statutory requirements. These restrictions are mainly related to standard requirements to maintain debt service coverage ratios and other requirements from the financing arrangements. In addition, the Company considered Mojave´s net assets as restricted since PG&E filed for reorganization under Chapter 11, resulting in a technical event of default being triggered under Mojave´s project finance agreement in July 2019. At December 31, 2019, the accumulated amount of the temporary restrictions for the entire restricted term of these affiliates was $789 million. The Company performed a test on the restricted net assets of consolidated subsidiaries in accordance with Securities and Exchange Commission Regulation S-X Rule 12-04 and concluded the restricted net assets exceeded 25% of the consolidated net assets of the Company as of December 31, 2019. Therefore, the separate financial statements of Atlantica Yield, Plc. do have to be presented (see Appendix V (Schedule I) for details). 23.2. United Kingdom’s exit from the European Union On January 31, 2020, the United Kingdom (“UK”) ceased to be part of the European Union (“EU”) and entered into a transition period to, among other things, negotiate an agreement with the EU on the future terms of the UK´s relationship with the EU. The transition period is currently expected to end on December 31, 2020. As of the date of this report, the UK and the EU have not reached an agreement. Therefore, the impact of the UK’s departure from, and future relationship with the EU are uncertain. 23.3 Subsequent events On February 26, 2020, the Board of Directors of the Company approved a dividend of $0.41 per share, which is expected to be paid on March 23, 2020.

Schedule I, Condensed Financial

Schedule I, Condensed Financial Statements	12 Months Ended
	Dec. 31, 2019
Schedule I, Condensed Financial Statements [Abstract]
Schedule I, Condensed Financial Statements	Appendices Appendix V (Schedule I) Condensed Financial Statements of Atlantica Yield plc Condensed statements of financial position of Atlantica Yield Plc. – Amounts in thousands of usd – As of December 31, 2019 2018 Assets Investment in affiliates 1,909,066 1,883,964 Loans to affiliates 500,871 605,778 Cash and cash equivalents 66,013 106,734 Other assets 61,161 8,458 Total assets 2,537,111 2,604,934 Liabilities and Equity Borrowings 695,874 426,748 Notes and bonds 27,917 257,325 Amounts owed to affiliates 192,601 138,222 Other Liabilities 7,205 13,493 Total Liabilities 923,597 835,788 Common Stock 10,160 10,022 Additional paid-in capital 1,011,743 1,481,881 Distributable reserves 889,056 548,059 Other reserves (637 ) - Retained earnings (296,808 ) (270,816 ) Total shareholders’s equity 1,613,514 1,769,146 Total liabilities and equities 2,537,111 2,604,934 Condensed income statements of Atlantica Yield, Plc. – Amounts in thousands of usd – For the year ended December 31, 2019 2018 2017 Income from Services 49,622 54,743 123,944 Other financial income 12,772 4,334 17,419 Total income 62,394 59,077 141,363 Expenses Other operating expenses (26,120 ) (189,116 ) (21,173 ) Interests Credit entities (46,781 ) (42,321 ) (46,292 ) Other financial expenses (15,485 ) (12,083 ) (21,333 ) Total expenses (88,386 ) (243,520 ) (88,798 ) Income/(Loss) before income taxes (25,992 ) (184,443 ) 52,565 Income tax benefits/(expense) - - - Profit/(Loss) for the year (25,992 ) (184,443 ) 52,565 Other comprehensive income statement of Atlantica Yield, Plc. – Amounts in thousands of usd – For the year ended December 31, 2019 2018 2017 Profit/(loss) for the year (25,992 ) (184,443 ) 52,565 Items that may be subject to transfer to income statement Change in fair value of cash flow hedges (457 ) 147 (13,666 ) Net income/(expenses) recognized directly in equity (457 ) 147 (13,666 ) Cash flow hedges (180 ) (328 ) (32 ) Transfer to income statement (180 ) (328 ) (32 ) Other comprehensive income/(loss) for the year (637 ) (181 ) (13,698 ) Total comprehensive income/(loss) for the year (26,629 ) (184,624 ) 38,867 Condensed cash flow statements of Atlantica Yield, Plc. – Amounts in thousands of usd – For the year ended December 31, 2019 2018 2017 Cash Flow from operating activities (48,502 ) (30,571 ) 34,937 Cash Flow—investing activities Decrease (increase) in investment and advance to affiliates 91,181 66,069 151,033 Net decrease (increase) in other assets - - - Cash (used for)/provided by investing activities 91,181 66,069 151,033 Cash Flow—financing activities Net increase/(decrease) in borrowings and other liabilities 45,601 56,000 (64,754 ) Dividend paid to shareowner (159,002 ) (133,289 ) (94,845 ) Capital increase and other 30,000 - - Cash from financing activities (83,401 ) (77,289 ) (159,599 ) Increase (decrease) in cash and cash equivalents during the year (40,721 ) (41,791 ) 26,371 Cash and cash equivalent at the beginning of the year 106,734 148,525 122,154 Cash and cash equivalent at the end of the year 66,013 106,734 148,525 Notes to the Condensed Financial Statements Schedule I has been provided pursuant to the requirements of Rule 12- 04(a) of Regulation S-X, of the US Securities and Exchange Commission (SEC) which require condensed financial information as to the financial position, change in financial position, results of operations of Atlantica Yield plc, other comprehensive income statement and cash flow statement as of the same dates and for the same periods for which audited consolidated financial statements have been presented when the restricted net assets of consolidated subsidiaries exceed 25 percent of consolidated net assets as of the end of the most recently completed fiscal year. Certain information and footnote disclosures normally included in financial statements prepared in accordance with International Financial Reporting Standards have been condensed or omitted. The footnote disclosures contain supplemental information only and, as such, these statements should be read in conjunction with the notes to the accompanying consolidated financial statements. Basis of Presentation. a) The presentation of Atlantica Yield plc stands alone condensed financial statement has been prepared using the same accounting policies as set out in the accompanying consolidated financial statements except that, the Company records its investment in subsidiaries under the cost method of accounting and that financial income from credits to companies in the group are recorded under Income from services, given that the company is a holding and this type of service is part of its primary activity. Such investments are presented on the statements of financial position as “Investment in and loans to affiliates” at cost less any identified impairment loss. b) As of December 31, 2019, 2018 and 2017 there were no material contingencies, significant provisions of long-term obligations, mandatory dividend or redemption requirements of redeemable stocks or guarantees of the Company, except for those which have been separately disclosed in the Consolidated Financial Statements, if any. c) For the year ended December 31, 2019 and 2018, no cash dividend has been declared to the Company by its consolidated subsidiaries or associated. For the year ended December 2017, cash dividend of $10,383 thousand were declared to the Company by its consolidated subsidiaries or associates. Reconciliation of the stand-alone to consolidated financial statements of Atlantica Yield Plc. Profit/(Loss) Reconciliation For the year ended December 31, 2019 2018 2017 Stand-alone—IFRS profit/(loss) for the period (25,992 ) (184,443 ) 52,565 Additional profit/(loss) if subsidiaries had been accounted for using the equity method of accounting as opposed to cost method 88,127 226,039 (164,369 ) Consolidated IFRS profit/(loss) for the period attributable to Atlantica Yield plc 62,135 41,596 (111,804 ) Equity Reconciliation As of December 31, 2019 2018 2017 Stand-alone—IFRS shareholders equity 1,613,514 1,769,146 2,087,059 Additional shareholders equity if subsidiaries had been accounted for using the equity method of accounting as opposed to cost method 101,342 (13,034 ) (191,606 ) Consolidated IFRS shareholders equity 1,714,856 1,756,112 1,895,453

Significant accounting polici_2

Significant accounting policies (Policies)	12 Months Ended
	Dec. 31, 2019
Significant accounting policies [Abstract]
Basis of preparation	2.1 Basis of preparation These consolidated financial statements are presented in accordance with the International Financial Reporting Standards (“IFRS”) as issued by the International Accounting Standards Board (“IASB”). The consolidated financial statements are presented in U.S. dollars, which is the Company’s functional and presentation currency. Amounts included in these consolidated financial statements are all expressed in thousands of U.S. dollars, unless otherwise indicated. Application of new accounting standards a) Standards, interpretations and amendments effective from January 1, 2019 under IFRS-IASB, applied by the Company in the preparation of these consolidated financial statements: - IFRS 9 (Amendments to IFRS 9): Prepayment Features with Negative Compensation. This Standard is applicable for annual periods beginning on or after January 1, 2019 under IFRS-IASB, earlier application is permitted. - IAS 19 (Amendments to IAS 19): Plan Amendment, Curtailment or Settlement. This amendment is mandatory for annual periods beginning on or after January 1, 2019 under IFRS-IASB, earlier application is permitted. - IFRIC 23: Uncertainty over Income Tax Treatments. This Standard is applicable for annual periods beginning on or after January 1, 2019 under IFRS-IASB. - IAS 28 (Amendment). Long-term Interests in Associates and Joint Ventures. This amendment is mandatory for annual periods beginning on or after January 1, 2019 under IFRS-IASB, earlier application is permitted. - Amendments resulting from Annual Improvements 2015–2017 Cycle (remeasurement of previously held interest). This amendment is mandatory for annual periods beginning on or after January 1, 2019 under IFRS-IASB, The applications of these amendments have not had any material impact on these consolidated financial statements. b) Standards, interpretations and amendments published by the IASB that will be effective for periods beginning on or after January 1, 2020: - IFRS 17 ‘Insurance Contracts’. This Standard is applicable for annual periods beginning on or after January 1, 2021 under IFRS-IASB, earlier application is permitted. - IFRS 3 (Amendment). Definition of Business. This amendment is mandatory for annual periods beginning on or after January 1, 2020 under IFRS-IASB, earlier application is permitted. - IAS 1 and IAS 8 (Amendment). Definition of Material. This amendment is mandatory for annual periods beginning on or after January 1, 2020 under IFRS-IASB, earlier application is permitted. - IAS 1 (Amendment). Classification of liabilities. This amendment is mandatory for annual periods beginning on or after January 1, 2022 under IFRS-IASB. - IFRS 7 and IFRS 9. Amendments regarding pre-replacement issues in the context of the IBOR reform. These amendments are mandatory for annual periods beginning on or after January 1, 2020 under IFRS-IASB. - Amendments to References to the Conceptual Frameworks in IFRS Standards. This Standard is applicable for annual periods beginning on or after January 1, 2020 under IFRS-IASB. The Company does not anticipate any significant impact on the consolidated financial statements derived from the application of the new standards and amendments that will be effective for annual periods beginning on or after January 1, 2020, although it is currently still in the process of evaluating such application.
Principles to include and record companies in the consolidated financial statements	2.2. Principles to include and record companies in the consolidated financial statements Companies included in these consolidated financial statements are accounted for as subsidiaries as long as Atlantica has had control over them and are accounted for as investments under the equity method as long as Atlantica has had significant influence over them, in the periods presented. a) Controlled entities Control is achieved when the Company: · Has power over the investee; · Is exposed, or has rights, to variable returns from its involvement with the investee; and · Has the ability to use its power to affect its returns. The Company reassesses whether or not it controls an investee when facts and circumstances indicate that there are changes to one or more of the three elements of control listed above. The Company uses the acquisition method to account for business combinations of companies controlled by a third party. According to this method, identifiable assets acquired and liabilities and contingent liabilities assumed in a business combination are measured initially at their fair values at the acquisition date. Any contingent consideration is recognized at fair value at the acquisition date and subsequent changes in its fair value are recognized in accordance with IFRS 9 either in profit or loss or as a change to other comprehensive income. Acquisition related costs are expensed as incurred. The Company recognizes any non-controlling interest in the acquiree either at fair value or at the non-controlling interest’s proportionate share of the acquirer’s net assets on an acquisition by acquisition basis. All assets and liabilities between entities of the group, equity, income, expenses, and cash flows relating to transactions between entities of the group are eliminated in full. b) Investments accounted for under the equity method An associate is an entity over which the Company has significant influence. Significant influence is the power to participate in the financial and operating policy decisions of the investee but is not control or joint control over those policies. The results and assets and liabilities of associates are incorporated in these financial statements using the equity method of accounting. Under the equity method, an investment in an associate is initially recognized in the statement of financial position at cost and adjusted thereafter to recognize the Company share of the profit or loss and other comprehensive income of the associate. Controlled entities and associates included in these financial statements as of December 31, 2019 and 2018 are set out in appendices.
Contracted concessional assets and price purchase agreements	2.3. Contracted concessional assets and price purchase agreements Contracted concessional assets and price purchase agreements (PPAs) include fixed assets financed through project debt, related to service concession arrangements recorded in accordance with IFRIC 12, except for Palmucho, which is recorded in accordance with IFRS 16 and PS10, PS20, Mini-Hydro, Chile TL 3 and Seville PV, which are recorded as tangible assets in accordance with IAS 16. The infrastructures accounted for by the Company as concessions are related to the activities concerning electric transmission lines, solar electricity generation plants, cogeneration plants, wind farms and water plants. The useful life of these assets is approximately the same as the length of the concession arrangement. The infrastructure used in a concession can be classified as an intangible asset or a financial asset, depending on the nature of the payment entitlements established in the agreement. The application of IFRIC 12 requires extensive judgment in relation with, among other factors, (i) the identification of certain infrastructures and contractual agreements in the scope of IFRIC 12, (ii) the understanding of the nature of the payments in order to determine the classification of the infrastructure as a financial asset or as an intangible asset and (iii) the timing and recognition of the revenue from construction and concessionary activity. Under the terms of contractual arrangements within the scope of this interpretation, the operator shall recognize and measure revenue in accordance with IFRS 15 for the services it performs. a) Intangible asset The Company recognizes an intangible asset to the extent that it receives a right to charge final customers for the use of the infrastructure. This intangible asset is subject to the provisions of IAS 38 and is amortized linearly, taking into account the estimated period of commercial operation of the infrastructure which coincides with the concession period. Once the infrastructure is in operation, the treatment of income and expenses is as follows: · Revenues from the updated annual revenue for the contracted concession, as well as operations and maintenance services are recognized in each period according to IFRS 15 “Revenue from contracts with Customers”. · Operating and maintenance costs and general overheads and administrative costs are recorded in accordance with the nature of the cost incurred (amount due) in each period. · Financing costs are expensed as incurred. b) Financial asset The Company recognizes a financial asset when demand risk is assumed by the grantor, to the extent that the concession holder has an unconditional right to receive payments for the asset. This asset is recognized at the fair value of the construction services provided, considering upgrade services in accordance with IFRS 15, if any. The financial asset is subsequently recorded at amortized cost calculated according to the effective interest method. Revenue from operations and maintenance services is recognized in each period according to IFRS 15 “Revenue from contracts with Customers”. The income from managing and operating the asset resulting from the valuation at amortized cost is also recorded in revenue. Financing costs are expensed as incurred. According to IFRS 9, Atlantica recognises an allowance for expected credit losses (ECLs) for all debt instruments not held at fair value through profit or loss. ECLs are based on the difference between the contractual cash flows due in accordance with the contract and all the cash flows that the Company expects to receive. There are two main approaches to applying the ECL model according to IFRS 9: the general approach which involves a three stage approach, and the simplified approach, which can be applied to trade receivables, contract assets and lease receivables. Atlantica has elected to apply the simplified approach. Under this approach, there is no need to monitor for significant increases in credit risk and entities will be required to measure lifetime expected credit losses at the end of each reporting period. The key elements of the ECL calculations are the following: - the Probability of Default (“PD”) is an estimate of the likelihood of default over a given time horizon. Atlantica calculates PD based on Credit Default Swaps spreads (“CDS”); - the Exposure at Default (“EAD”) is an estimate of the exposure at a future default date; - the Loss Given Default (“LGD”) is an estimate of the loss arising in the case where a default occurs at a given time. It is based on the difference between the contractual cash flows due and those that the Company would expect to receive. It is expressed as a percentage of the EAD. c) Property, plant and equipment Property, plant and equipment includes property, plant and equipment of companies or project companies. Property, plant and equipment is measured at historical cost, including all expenses directly attributable to the acquisition, less depreciation and impairment losses, with the exception of land, which is presented net of any impairment losses. Once the infrastructure is in operation, the treatment of income and expenses is the same as the one described above for intangible asset. d) Right-of-use assets
Borrowing costs	2.4. Borrowing costs Interest costs incurred in the construction of any qualifying asset are capitalized over the period required to complete and prepare the asset for its intended use. A qualifying asset is an asset that necessarily takes a substantial period of time to get ready for its internal use or sale, which is considered to be more than one year. Remaining borrowing costs are expensed in the period in which they are incurred.
Asset impairment	2.5. Asset impairment Atlantica reviews its contracted concessional assets to identify any indicators of impairment at least annually. When impairment indicators exist, the company calculates the recoverable amount of the asset. The recoverable amount of an asset is the higher of its fair value less costs to sell and its value in use, defined as the present value of the estimated future cash flows to be generated by the asset. In the event that the asset does not generate cash flows independently of other assets, the Company calculates the recoverable amount of the Cash Generating Unit (‘CGU’) to which the asset belongs. When the carrying amount of the CGU to which these assets belong is higher than its recoverable amount, the assets are impaired. Assumptions used to calculate value in use include a discount rate, growth rate and projections considering real data based in the contracts terms and projected changes in both selling prices and costs. The discount rate is estimated by Management, to reflect both changes in the value of money over time and the risks associated with the specific CGU. For contracted concessional assets, with a defined useful life and with a specific financial structure, cash flow projections until the end of the project are considered and no terminal value is assumed. Contracted concessional assets have a contractual structure that permits the Company to estimate quite accurately the costs of the project and revenue during the life of the project. Projections take into account real data based on the contract terms and fundamental assumptions based on specific reports prepared internally and supported by specialists, assumptions on demand and assumptions on production. Additionally, assumptions on macro-economic conditions are taken into account, such as inflation rates, future interest rates, etc. and sensitivity analyses are performed over all major assumptions which can have a significant impact in the value of the asset. Cash flow projections of CGUs are calculated in the functional currency of those CGUs and are discounted using rates that take into consideration the risk corresponding to each specific country and currency. Taking into account that in most CGUs the specific financial structure is linked to the financial structure of the projects that are part of those CGUs, the discount rate used to calculate the present value of cash-flow projections is based on the weighted average cost of capital (WACC) for the type of asset, adjusted, if necessary, in accordance with the business of the specific activity and with the risk associated with the country where the project is performed. In any case, sensitivity analyses are performed, especially in relation with the discount rate used and fair value changes in the main business variables, in order to ensure that possible changes in the estimates of these items do not impact the recovery of recognized assets. Accordingly, the following table provides a summary of the discount rates used (WACC) and growth rates to calculate the recoverable amount for CGUs with the operating segment to which it pertains: Operating segment Discount rate Growth rate EMEA 4% - 6 % 0 % North America 4% - 5 % 0 % South America 5% - 7 % 0 % In the event that the recoverable amount of an asset is lower than its carrying amount, an impairment charge for the difference would be recorded in the income statement under the item “Depreciation, amortization and impairment charges”. Pursuant to IAS 36, an impairment loss is recognized by the Company if the carrying amount of these assets exceeds the present value of future cash flows discounted at the initial effective interest rate.
Loans and accounts receivable	2.6 Loans and accounts receivable Loans and accounts receivable are non-derivative financial assets with fixed or determinable payments, not listed on an active market. In accordance with IFRIC 12, certain assets under concessions qualify as financial assets and are recorded as is described in Note 2.3. Pursuant to IFRS 9, an impairment loss is recognized if the carrying amount of these assets exceeds the present value of future cash flows discounted at the initial effective interest rate. Loans and accounts receivable are initially recognized at fair value plus transaction costs and are subsequently measured at amortized cost in accordance with the effective interest rate method. Interest calculated using the effective interest rate method is recognized under other financial income within financial income.
Derivative financial instruments and hedging activities	2.7. Derivative financial instruments and hedging activities Derivatives are recorded at fair value. The Company applies hedge accounting to all hedging derivatives that qualify to be accounted for as hedges under IFRS-IASB. When hedge accounting is applied, hedging strategy and risk management objectives are documented at inception, as well as the relationship between hedging instruments and hedged items. Effectiveness of the hedging relationship needs to be assessed on an ongoing basis. Effectiveness tests are performed prospectively at inception and at each reporting date, following the dollar offset method. Atlantica applies cash flow hedging. Under this method, the effective portion of changes in fair value of derivatives designated as cash flow hedges are recorded temporarily in equity and are subsequently reclassified from equity to profit or loss in the same period or periods during which the hedged item affects profit or loss. Any ineffective portion of the hedged transaction is recorded in the consolidated income statement as it occurs. When interest rate options are designated as hedging instruments, the intrinsic value and time value of the financial hedge instrument are separated. Changes in intrinsic and time value which are highly effective are recorded in equity and subsequently reclassified from equity to profit or loss in the same period or periods during which the hedged item affects profit or loss. Any ineffectiveness is recorded as financial income or expense as it occurs. When the hedging instrument matures or is sold, or when it no longer meets the requirements to apply hedge accounting, accumulated gains and losses recorded in equity remain as such until the forecast transaction is ultimately recognized in the income statement. However, if it becomes unlikely that the forecast transaction will actually take place, the accumulated gains and losses in equity are recognized immediately in the income statement.
Fair value estimates	2.8. Fair value estimates Financial instruments measured at fair value are presented in accordance with the following level classification based on the nature of the inputs used for the calculation of fair value: · Level 1: Inputs are quoted prices in active markets for identical assets or liabilities. · Level 2: Fair value is measured based on inputs other than quoted prices included within Level 1 that are observable for the asset or liability, either directly (i.e. as prices) or indirectly (i.e. derived from prices). · Level 3: Fair value is measured based on unobservable inputs for the asset or liability. In the event that prices cannot be observed, the management shall make its best estimate of the price that the market would otherwise establish based on proprietary internal models which, in the majority of cases, use data based on observable market parameters as significant inputs (Level 2) but occasionally use market data that is not observed as significant inputs (Level 3). Different techniques can be used to make this estimate, including extrapolation of observable market data. The best indication of the initial fair value of a financial instrument is the price of the transaction, except when the value of the instrument can be obtained from other transactions carried out in the market with the same or similar instruments, or valued using a valuation technique in which the variables used only include observable market data, mainly interest rates. Differences between the transaction price and the fair value based on valuation techniques that use data that is not observed in the market, are not initially recognized in the income statement. Atlantica derivatives correspond primarily to the interest rate swaps designated as cash flow hedges, which are classified as Level 2. Description of the valuation method Interest rate swap valuations are made by valuing the swap part of the contract and valuing the credit risk. The methodology used by the market and applied by Atlantica to value interest rate swaps is to discount the expected future cash flows according to the parameters of the contract. Variable interest rates, which are needed to estimate future cash flows, are calculated using the curve for the corresponding currency and extracting the implicit rates for each of the reference dates in the contract. These estimated flows are discounted with the swap zero curve for the reference period of the contract. The effect of the credit risk on the valuation of the interest rate swaps depends on the future settlement. If the settlement is favorable for the Company, the counterparty credit spread will be incorporated to quantify the probability of default at maturity. If the expected settlement is negative for the Company, its own credit risk will be applied to the final settlement. Classic models for valuing interest rate swaps use deterministic valuation of the future of variable rates, based on future outlooks. When quantifying credit risk, this model is limited by considering only the risk for the current paying party, ignoring the fact that the derivative could change sign at maturity. A payer and receiver swaption model is proposed for these cases. This enables the associated risk in each swap position to be reflected. Thus, the model shows each agent’s exposure, on each payment date, as the value of entering into the ‘tail’ of the swap, i.e. the live part of the swap. Variables (Inputs) Interest rate derivative valuation models use the corresponding interest rate curves for the relevant currency and underlying reference in order to estimate the future cash flows and to discount them. Market prices for deposits, futures contracts and interest rate swaps are used to construct these curves. Interest rate options (caps and floors) also use the volatility of the reference interest rate curve. To estimate the credit risk of the counterparty, the credit default swap (CDS) spreads curve is obtained in the market for important individual issuers. For less liquid issuers, the spreads curve is estimated using comparable CDSs or based on the country curve. To estimate proprietary credit risk, prices of debt issues in the market and CDSs for the sector and geographic location are used. The fair value of the financial instruments that results from the aforementioned internal models takes into account, among other factors, the terms and conditions of the contracts and observable market data, such as interest rates, credit risk and volatility. The valuation models do not include significant levels of subjectivity, since these methodologies can be adjusted and calibrated, as appropriate, using the internal calculation of fair value and subsequently compared to the corresponding actively traded price. However, valuation adjustments may be necessary when the listed market prices are not available for comparison purposes.
Trade and other receivables	2.9. Trade and other receivables Trade and other receivables are amounts due from customers for sales in the normal course of business. They are recognized initially at fair value and subsequently measured at amortized cost using the effective interest rate method, less allowance for doubtful accounts. Trade receivables due in less than one year are carried at their face value at both initial recognition and subsequent measurement, provided that the effect of not discounting flows is not significant. An allowance for doubtful accounts is recorded when there is objective evidence that the Company will not be able to recover all amounts due as per the original terms of the receivables. The Company has established a provision matrix that is based on its historical credit loss experience, adjusted for forward-looking factors specific to the debtors and the economic environment.
Cash and cash equivalents	2.10. Cash and cash equivalents Cash and cash equivalents include cash in hand, cash in bank and other highly-liquid current investments with an original maturity of three months or less which are held for the purpose of meeting short-term cash commitments.
Grants	2.11. Grants Grants are recognized at fair value when it is considered that there is a reasonable assurance that the grant will be received and that the necessary qualifying conditions, as agreed with the entity assigning the grant, will be adequately complied with. Grants are recorded as liabilities in the consolidated statement of financial position and are recognized in “Other operating income” in the consolidated income statement based on the period necessary to match them with the costs they intend to compensate. In addition, as described in Note 2.12 below, grants correspond also to loans with interest rates below market rates, for the initial difference between the fair value of the loan and the proceeds received.
Loans and borrowings	2.12. Loans and borrowings Loans and borrowings are initially recognized at fair value, net of transaction costs incurred. Borrowings are subsequently measured at amortized cost and any difference between the proceeds initially received (net of transaction costs incurred in obtaining such proceeds) and the repayment value is recognized in the consolidated income statement over the duration of the borrowing using the effective interest rate method. Loans with interest rates below market rates are initially recognized at fair value in liabilities and the difference between proceeds received from the loan and its fair value is initially recorded within “Grants and Other liabilities” in the consolidated statement of financial position, and subsequently recorded in “Other operating income” in the consolidated income statement when the costs financed with the loan are expensed. Lease liabilities are recognized by the Company at the commencement date of the lease at the present value of lease payments to be made over the lease term. The lease payments include the exercise price of a purchase option reasonably certain to be exercised by the Company and payments of penalties for terminating the lease, if the lease term reflects the Company exercising the option to terminate. In calculating the present value of lease payments, the Company uses its incremental borrowing rate at the lease commencement date considering that the interest rate implicit in the lease is not readily determinable.
Bonds and notes	2.13. Bonds and notes The Company initially recognizes ordinary notes at fair value, net of issuance costs incurred. Subsequently, notes are measured at amortized cost until settlement upon maturity. Any other difference between the proceeds obtained (net of transaction costs) and the redemption value is recognized in the consolidated income statement over the term of the debt using the effective interest rate method.
Income taxes	2.14. Income taxes Current income tax expense is calculated on the basis of the tax laws in force as of the date of the consolidated statement of financial position in the countries in which the subsidiaries and associates operate and generate taxable income. Deferred income tax is calculated in accordance with the liability method, based upon the temporary differences arising between the carrying amount of assets and liabilities and their tax base. Deferred income tax is determined using tax rates and regulations which are expected to apply at the time when the deferred tax is realized. Deferred tax assets are recognized only when it is probable that sufficient future taxable profit will be available to use deferred tax assets.
Trade payables and other liabilities	2.15. Trade payables and other liabilities Trade payables are obligations arising from purchases of goods and services in the ordinary course of business and are recognized initially at fair value and are subsequently measured at their amortized cost using the effective interest method. Other liabilities are obligations not arising in the normal course of business and which are not treated as financing transactions. Advances received from customers are recognized as “Trade payables and other current liabilities”.
Foreign currency transactions	2.16. Foreign currency transactions The consolidated financial statements are presented in U.S. dollars, which is Atlantica’s functional and presentation currency. Financial statements of each subsidiary within the Company are measured in the currency of the principal economic environment in which the subsidiary operates, which is the subsidiary’s functional currency. Transactions denominated in a currency different from the subsidiary’s functional currency are translated into the subsidiary’s functional currency applying the exchange rates in force at the time of the transactions. Foreign currency gains and losses that result from the settlement of these transactions and the translation of monetary assets and liabilities denominated in foreign currency at the year-end rates are recognized in the consolidated income statement, unless they are deferred in equity, as occurs with cash flow hedges and net investment in foreign operations hedges. Assets and liabilities of subsidiaries with a functional currency different from the Company’s reporting currency are translated to U.S. dollars at the exchange rate in force at the closing date of the financial statements. Income and expenses are translated into U.S. dollars using the average annual exchange rate, which does not differ significantly from using the exchange rates of the dates of each transaction. The difference between equity translated at the historical exchange rate and the net financial position that results from translating the assets and liabilities at the closing rate is recorded in equity under the heading “Accumulated currency translation differences”. Results of companies carried under the equity method are translated at the average annual exchange rate.
Equity	2.17. Equity The Company has recyclable balances in its equity, corresponding mainly to hedge reserves and translation differences arising from currency conversion in the preparation of these consolidated financial statements. These balances have been presented separately in Equity. Non-controlling interest represents interest from other partners in entities included in these consolidated financial statements which are not fully owned by Atlantica as of the dates presented. Parent company reserves together with the Share capital represent the Parent’s net investment in the entities included in these consolidated financial statements.
Provisions and contingencies	2.18. Provisions and contingencies Provisions are recognized when: · there is a present obligation, either legal or constructive, as a result of past events; · it is more likely than not that there will be a future outflow of resources to settle the obligation; and · the amount has been reliably estimated. Provisions are initially measured at the present value of the expected outflows required to settle the obligation and subsequently valued at amortized cost following the effective interest method. The balance of provisions disclosed in the Notes reflects management’s best estimate of the potential exposure as of the date of preparation of the consolidated financial statements. Contingent liabilities are possible obligations, existing obligations with low probability of a future outflow of economic resources and existing obligations where the future outflow cannot be reliably estimated. Contingences are not recognized in the consolidated statements of financial position unless they have been acquired in a business combination. Some companies included in the group have dismantling provisions, which are intended to cover future expenditures related to the dismantlement of the plants and it will be likely to be settled with an outflow of resources in the long term (over 5 years). Such provisions are accrued when the obligation for dismantling, removing and restoring the site on which the plant is located, is incurred, which is usually during the construction period. The provision is measured in accordance with IAS 37, “Provisions, Contingent Liabilities and Contingent Assets” and is recorded as a liability under the heading “Grants and other liabilities” of the Financial Statements, and as the corresponding ending entry part of the cost of the plant under the heading “Contracted concessional assets.”
Use of estimates	2.19. Use of estimates Some of the accounting policies applied require the application of significant judgment by management to select the appropriate assumptions to determine these estimates. These assumptions and estimates are based on the historical experience, advice from experienced consultants, forecasts and other circumstances and expectations as of the close of the financial period. The assessment is considered in relation to the global economic situation of the industries and regions where the Company operates, taking into account future development of the businesses of the Company. By their nature, these judgments are subject to an inherent degree of uncertainty; therefore, actual results could materially differ from the estimates and assumptions used. In such cases, the carrying values of assets and liabilities are adjusted. The most critical accounting policies, which reflect significant management estimates and judgment to determine amounts in these consolidated financial statements, are as follows: · Contracted concessional agreements and PPAs. · Impairment of intangible assets and property, plant and equipment. · Assessment of control. · Derivative financial instruments and fair value estimates. · Income taxes and recoverable amount of deferred tax assets. As of the date of preparation of these consolidated financial statements, no relevant changes in the estimates made are anticipated and, therefore, no significant changes in the value of the assets and liabilities recognized at December 31, 2019, are expected. Although these estimates and assumptions are being made using all available facts and circumstances, it is possible that future events may require management to amend such estimates and assumptions in future periods. Changes in accounting estimates are recognized prospectively, in accordance with IAS 8, in the consolidated income statement of the year in which the change occurs.

Nature of the business (Tables)

Nature of the business (Tables)	12 Months Ended
	Dec. 31, 2019
Nature of the business [Abstract]
Overview of concessional assets	The following table provides an overview of the main concessional assets the Company owned or had an interest in as of December 31, 2019: Assets Type Ownership Location Currency (8) Capacity (Gross) Counterparty Credit Ratings (9) COD* Contract Years Left (13) Solana Renewable (Solar) 100% Class B (1) Arizona (USA) USD 280 MW A-/A2/A- 2013 24 Mojave Renewable (Solar) 100% California (USA) USD 280 MW D/WR/WD 2014 20 Solaben 2 & 3 Renewable (Solar) 70% (2) Spain Euro 2x50 MW A/Baa1/A- 2012 18/17 Solacor 1 & 2 Renewable (Solar) 87% (3) Spain Euro 2x50 MW A/Baa1/A- 2012 17/17 PS10/PS20 Renewable (Solar) 100% Spain Euro 31 MW A/Baa1/A- 2007& 2009 12/14 Helioenergy 1 & 2 Renewable (Solar) 100% Spain Euro 2x50 MW A/Baa1/A- 2011 17/17 Helios 1 & 2 Renewable (Solar) 100% Spain Euro 2x50 MW A/Baa1/A- 2012 18/18 Solnova 1, 3 & 4 Renewable (Solar) 100% Spain Euro 3x50 MW A/Baa1/A- 2010 15/15/16 Solaben 1 & 6 Renewable (Solar) 100% Spain Euro 2x50 MW A/Baa1/A- 2013 19/19 Kaxu Renewable (Solar) 51% (4) South Africa Rand 100 MW BB/Baa3/ BB+ (10) 2015 15 Palmatir Renewable (Wind) 100% Uruguay USD 50 MW BBB/Baa2/BBB- (11) 2014 14 Cadonal Renewable (Wind) 100% Uruguay USD 50 MW BBB/Baa2/BBB- (11) 2014 15 ACT Efficient natural gas 100% Mexico USD 300 MW BBB+/ Baa3/BB+ 2013 13 Monterrey Efficient natural gas 30% Mexico USD 142 MW Not rated 2018 19 ATN (12) Transmission line 100% Peru USD 379 miles BBB+/A3/BBB+ 2011 21 ATS Transmission line 100% Peru USD 569 miles BBB+/A3/BBB+ 2014 24 ATN 2 Transmission line 100% Peru USD 81 miles Not rated 2015 13 Quadra 1 Transmission line 100% Chile USD 49 miles Not rated 2014 15 Quadra 2 Transmission line 100% Chile USD 32 miles Not rated 2014 15 Palmucho Transmission line 100% Chile USD 6 miles BBB+/Baa2/ BBB+ 2007 18 Chile TL3 Transmission line 100% Chile USD 50 miles A+/A1/A 1993 Regulated Skikda Water 34.2%(5) Algeria USD 3.5 M ft3/day Not rated 2009 14 Honaine Water 25.5%(6) Algeria USD 7 M ft3/ day Not rated 2012 18 Seville PV Renewable (Solar) 80%(7) Spain Euro 1 MW A/Baa1/A- 2006 16 Melowind Renewable (Wind) 100% Uruguay USD 50MW BBB/Baa2/BBB- 2015 16 Mini-Hydro Renewable (Hydraulic) 100% Peru USD 4 MW BBB+/A3/BBB+ 2012 13 (1) On September 30, 2013, Liberty Interactive Corporation agreed to invest $300 million in Class A shares of ASO Holdings Company LLC, the holding company of Solana, in exchange for a share of the dividends and the taxable losses generated by Solana. (2) Itochu Corporation, a Japanese trading company, holds 30% of the shares in each of Solaben 2 and Solaben 3. (3) JGC, a Japanese engineering company, holds 13% of the shares in each of Solacor 1 and Solacor 2. (4) Kaxu is owned by the Company (51%), Industrial Development Corporation of South Africa (29%) and Kaxu Community Trust (20%). (5) Algerian Energy Company, SPA owns 49% of Skikda and Sacyr Agua, S.L. owns the remaining 16.83%. (6) Algerian Energy Company, SPA owns 49% of Honaine and Sacyr Agua, S.L. owns the remaining 25.5%. (7) Instituto para la Diversificación y Ahorro de la Energía (“Idae”), a Spanish state owned company, holds 20% of the shares in Seville PV. (8) Certain contracts denominated in U.S. dollars are payable in local currency. (9) Reflects the counterparty’s credit ratings issued by Standard & Poor’s Ratings Services, or S&P, Moody’s Investors Service Inc., or Moody’s, and Fitch Ratings Ltd, or Fitch. (10) Refers to the credit rating of the Republic of South Africa. The offtaker is Eskom, which is a state-owned utility company in South Africa. (11) Refers to the credit rating of Uruguay, as UTE (Administración Nacional de Usinas y Transmisoras Eléctricas) is unrated. (12) Including the acquisition of ATN Expansion 1 & 2. (13) As of December 31, 2019. (*) Commercial Operation Date.

Significant accounting polici_3

Significant accounting policies (Tables)	12 Months Ended
	Dec. 31, 2019
Significant accounting policies [Abstract]
Discount rates and growth rates used to calculated recoverable amount for CGUs by segment	Accordingly, the following table provides a summary of the discount rates used (WACC) and growth rates to calculate the recoverable amount for CGUs with the operating segment to which it pertains: Operating segment Discount rate Growth rate EMEA 4% - 6 % 0 % North America 4% - 5 % 0 % South America 5% - 7 % 0 %

Financial information by segm_2

Financial information by segment (Tables)	12 Months Ended
	Dec. 31, 2019
Financial information by segment [Abstract]
Revenues and Further Adjusted EBITDA, assets and liabilities by operating segments and business sectors	a) The following tables show Revenues and Further Adjusted EBITDA by operating segments and business sectors for the years 2019, 2018 and 2017: Revenue Further Adjusted EBITDA For the year ended December 31, For the year ended December 31, Geography 2019 2018 2017 2019 2018 2017 North America $ 332,965 $ 357,177 $ 332,705 $ 305,085 $ 308,748 $ 282,328 South America 142,207 123,214 120,797 115,346 100,234 108,766 EMEA 536,280 563,431 554,879 390,774 441,625 388,216 Total $ 1,011,452 $ 1,043,822 $ 1,008,381 $ 811,204 $ 850,607 $ 779,310 Revenue Further Adjusted EBITDA For the year ended December 31, For the year ended December 31, Business sectors 2019 2018 2017 2019 2018 2017 Renewable energy $ 761,090 $ 793,557 $ 767,226 $ 603,666 $ 664,428 $ 569,193 Efficient natural gas 122,281 130,799 119,784 107,457 93,858 106,140 Electric transmission lines 103,453 95,998 95,096 85,657 78,461 87,695 Water 24,629 23,468 26,275 14,424 13,860 16,282 Total $ 1,011,452 $ 1,043,822 $ 1,008,381 $ 811,204 $ 850,607 $ 779,310 The reconciliation of segment Further Adjusted EBITDA with the profit/(loss) attributable to the parent company is as follows: For the year ended December 31, 2019 2018 2017 Profit/(Loss) attributable to the Company $ 62,135 $ 41,596 $ (111,804 ) Profit attributable to non-controlling interests 12,473 13,673 6,917 Income tax 30,950 42,659 119,837 Share of profits/(losses) of associates (7,457 ) (5,231 ) (5,351 ) Dividend from exchangeable preferred equity investment in ACBH (Note 21) - - 10,383 Financial expense, net 402,348 395,213 448,368 Depreciation, amortization, and impairment charges 310,755 362,697 310,960 Total segment Further Adjusted EBITDA $ 811,204 $ 850,607 $ 779,310
Assets and liabilities by geography	b) The assets and liabilities by operating segments (and business sector) at the end of 2019 and 2018 are as follows: Assets and liabilities by geography as of December 31, 2019: North America South America EMEA Balance as of December 31, 2019 Assets allocated Contracted concessional assets 3,299,198 1,186,552 3,675,379 8,161,129 Investments carried under the equity method 90,847 - 49,078 139,925 Current financial investments 159,267 29,190 20,673 209,131 Cash and cash equivalents (project companies) 181,458 80,909 234,097 496,464 Subtotal allocated 3,730,771 1,296,652 3,979,227 9,006,649 Unallocated assets Other non-current assets 239,553 Other current assets (including cash and cash equivalents at holding company level) 413,613 Subtotal unallocated 653,166 Total assets 9,659,815 North America South America EMEA Balance as of December 31, 2019 Liabilities allocated Long-term and short-term project debt 1,676,251 884,835 2,291,262 4,852,348 Grants and other liabilities 1,490,679 12,864 138,209 1,641,752 Subtotal allocated 3,166,930 897,699 2,429,471 6,494,100 Unallocated liabilities Long-term and short-term corporate debt 723,791 Other non-current liabilities 564,855 Other current liabilities 162,213 Subtotal unallocated 1,450,859 Total liabilities 7,944,959 Equity unallocated 1,714,856 Total liabilities and equity unallocated 3,165,715 Total liabilities and equity 9,659,815 Assets and liabilities by geography as of December 31, 2018: North America South America EMEA Balance as of December 31, 2018 Assets allocated Contracted concessional assets 3,453,652 1,210,624 3,884,905 8,549,181 Investments carried under the equity method - - 53,419 53,419 Current financial investments 147,213 61,959 30,080 239,252 Cash and cash equivalents (project companies) 195,678 41,316 287,456 524,450 Subtotal allocated 3,796,543 1,313,899 4,255,860 9,366,302 Unallocated assets Other non-current assets 188,736 Other current assets (including cash and cash equivalents at holding company level) 363,993 Subtotal unallocated 552,729 Total assets 9,919,031 North America South America EMEA Balance as of December 31, 2018 Liabilities allocated Long-term and short-term project debt 1,725,961 900,801 2,464,352 5,091,114 Grants and other liabilities 1,527,724 7,550 122,852 1,658,126 Subtotal allocated 3,253,685 908,351 2,587,204 6,749,240 Unallocated liabilities Long-term and short-term corporate debt 684,073 Other non-current liabilities 523,827 Other current liabilities 205,779 Subtotal unallocated 1,413,679 Total liabilities 8,162,919 Equity unallocated 1,756,112 Total liabilities and equity unallocated 3,169,791 Total liabilities and equity 9,919,031
Assets and liabilities by business sectors	Assets and liabilities by business sectors as of December 31, 2019: Renewable energy Efficient natural gas Electric transmission lines Water Balance as of December 31, 2019 Assets allocated Contracted concessional assets 6,644,024 559,069 872,757 85,280 8,161,129 Investments carried under the equity method 77,549 17,154 - 45,222 139,925 Current financial investments 13,798 148,723 28,237 18,373 209,131 Cash and cash equivalents (project companies) 421,198 11,850 53,868 9,548 496,464 Subtotal allocated 7,156,568 736,796 954,862 158,423 9,006,649 Unallocated assets Other non-current assets 239,553 Other current assets (including cash and cash equivalents at holding company level) 413,613 Subtotal unallocated 653,166 Total assets 9,659,815 Renewable energy Efficient natural gas Electric transmission lines Water Balance as of December 31, 2019 Liabilities allocated Long-term and short-term project debt 3,658,507 529,350 640,160 24,331 4,852,348 Grants and other liabilities 1,634,361 146 6,517 728 1,641,752 Subtotal allocated 5,292,868 529,495 646,677 25,059 6,494,100 Unallocated liabilities Long-term and short-term corporate debt 723,791 Other non-current liabilities 564,855 Other current liabilities 162,213 Subtotal unallocated 1,450,859 Total liabilities 7,944,959 Equity unallocated 1,714,856 Total liabilities and equity unallocated 3,165,715 Total liabilities and equity 9,659,815 Assets and liabilities by business sectors as of December 31, 2018: Renewable energy Efficient natural gas Electric transmission lines Water Balance as of December 31, 2018 Assets allocated Contracted concessional assets 6,998,020 580,997 882,980 87,184 8,549,181 Investments carried under the equity method 10,257 - - 43,162 53,419 Current financial investments 15,396 147,192 61,102 15,562 239,252 Cash and cash equivalents (project companies) 453,096 45,625 14,043 11,686 524,450 Subtotal allocated 7,476,769 773,814 958,125 157,594 9,366,302 Unallocated assets Other non-current assets 188,736 Other current assets (including cash and cash equivalents at holding company level) 363,993 Subtotal unallocated 552,729 Total assets 9,919,031 Renewable energy Efficient natural gas Electric transmission lines Water Balance as of December 31, 2018 Liabilities allocated Long-term and short-term project debt 3,868,626 545,123 647,820 29,545 5,091,114 Grants and other liabilities 1,656,146 161 1,025 794 1,658,126 Subtotal allocated 5,524,772 545,284 648,845 30,339 6,749,240 Unallocated liabilities Long-term and short-term corporate debt 684,073 Other non-current liabilities 523,827 Other current liabilities 205,779 Subtotal unallocated 1,413,679 Total liabilities 8,162,919 Equity unallocated 1,756,112 Total liabilities and equity unallocated 3,169,791 Total liabilities and equity 9,919,031
Depreciation, amortization and impairment charges recognized	c) The amount of depreciation, amortization and impairment charges recognized for the years ended December 31, 2019, 2018 and 2017 are as follows: For the year ended December 31, Depreciation, amortization and impairment by geography 2019 2018 2017 North America (116,232 ) (166,046 ) (123,726 ) South America (47,844 ) (42,368 ) (40,880 ) EMEA (146,679 ) (154,283 ) (146,354 ) Total (310,755 ) (362,697 ) (310,960 ) For the year ended December 31, Depreciation, amortization and impairment by business sectors 2019 2018 2017 Renewable energy (286,907 ) (323,538 ) (282,376 ) Electric transmission lines (27,490 ) (28,925 ) (28,584 ) Efficient natural gas 3,102 (10,334 ) - Water 541 100 - Total (310,755 ) (362,697 ) (310,960 )

Changes in the scope of the c_2

Changes in the scope of the consolidated financial statements (Tables)	12 Months Ended
	Dec. 31, 2019
Changes in the scope of the consolidated financial statements [Abstract]
Amount of assets and liabilities integrated at the effective acquisition date	The amount of assets and liabilities integrated at the effective acquisition date for the aggregated change in scope is shown in the following table: Asset Acquisition for the year ended December 31, 2019 Concessional assets (Note 6) 28,738 Investments carried under the equity method (Note 7) 113,897 Other non-current assets 25,342 Current assets 1,503 Deferred tax liabilities (Note 18) (2,539 ) Other current and non-current liabilities (1,512 ) Non-controlling interests (92,303 ) Asset acquisition - purchase price (73,126 ) Net result of the asset acquisition - The amount of assets and liabilities integrated at the effective acquisition date for the aggregated change in scope is shown in the following table: Asset Acquisition for the year ended December 31, 2018 Concessional assets (Note 6) 155,909 Investments carried under the equity method (Note 7) 1 Current assets 5,646 Project debt long term (Note 15) (79,016 ) Deferred tax liabilities (Note 18) (590 ) Project debt short term (Note 15) (2,346 ) Other current and non-current liabilities (3,000 ) Asset acquisition - purchase price (76,604 ) Net result of the asset acquisition -

Contracted concessional assets

Contracted concessional assets (Tables)	12 Months Ended
	Dec. 31, 2019
Contracted concessional assets [Abstract]
Movements of contracted concessional assets	a) The following table shows the movements of contracted concessional assets included in the heading “Contracted Concessional assets” for 2019: Cost Total as of January 1, 2019 10,475,828 Additions 1,431 Subtractions (23,186 ) Change in the scope of the consolidated financial statements (Note 5) 28,738 Translation differences (81,941 ) Reclassification and other movements (16,273 ) Total as of December 31, 2019 10,384,597 Accumulated amortization Total as of January 1, 2019 (1,926,647 ) Additions (310,755 ) Translation differences 15,778 Reclassification and other movements (1,844 ) Total accum. amort. as of December 31, 2019 (2,223,468 ) Net balance at December 31, 2019 8,161,129 b) The following table shows the movements of contracted concessional assets included in the heading “Contracted Concessional assets” for 2018: Cost Total as of January 1, 2018 10,633,769 Additions 10,463 Application of IFRS 16 – Leases effective January 1, 2018 62,982 Subtractions (92,814 ) Change in the scope of the consolidated financial statements (Note 5) 170,040 Translation differences (280,680 ) Reclassification and other movements (27,932 ) Total as of December 31, 2018 10,475,828 Accumulated amortization Total as of January 1, 2018 (1,549,499 ) Application of IFRS9 - Expected Credit Losses effective January 1, 2018 (53,048 ) Additions (362,697 ) Change in the scope of the consolidated financial statements (Note 5) (14,131 ) Translation differences 52,728 Total accum. amort. as of December 31, 2018 (1,926,647 ) Net balance at December 31, 2018 8,549,181

Investments carried under the_2

Investments carried under the equity method (Tables)	12 Months Ended
	Dec. 31, 2019
Investments carried under the equity method [Abstract]
Investments in associates	The table below shows the breakdown and the movement of the investments held in associates for 2019 and 2018: Investments in associates 2019 2018 Initial balance 53,419 55,784 Share of (loss)/profit 7,457 5,231 Dividend distribution (30,528 ) (4,463 ) Equity distribution (6,252 ) (122 ) Change in the scope of the consolidated financial statements (Note 5) 113,897 - Others (incl. currency translation differences) 1,932 (3,011 ) Final balance 139,925 53,419
Stand-alone amounts for associated companies	The tables below show a breakdown of stand-alone amounts of assets, revenues and profit and loss as well as other information of interest for the years 2019 and 2018 for the associated companies: Company % Shares Non- current assets Current assets Non- current liabilities Current liabilities Revenue Operating profit/ (loss) Net profit/ (loss) Investment under the equity method Evacuación Valdecaballeros, S.L. 57.16 18,584 1,268 13,145 783 694 (277 ) (303 ) 2,348 Myah Bahr Honaine, S.P.A.(*) 25.50 184,332 63,148 71,614 13,562 51,504 33,372 30,186 45,222 Pectonex, R.F. Proprietary Limited 50.00 3,074 - - 2 - (190 ) (190 ) 1,391 Evacuación Villanueva del Rey, S.L 40.02 2,946 107 1,841 225 - 47 - - Ca Ku A1, S.A.P.I de CV (PTS) 5.00 486,179 55,423 - 543,077 - (39 ) (495 ) - Pemcorp SAPI de CV (**) 30.00 125,301 72,669 197,324 5,090 32,302 5,737 (10.073 ) 17,179 ABY Infraestructuras S.L.U. 20.00 - 59 - - - (104 ) (101 ) 11 Windlectric Inc (***) 30.00 319,041 10,655 232,938 22,424 24,867 11,125 (6,537 ) 73,693 Other renewable energy joint ventures (****) 50.00 47 146 6 70 - (46 ) (46 ) 81 As of December 31, 2019 139,925 Company % Shares Non- current assets Current assets Non- current liabilities Current liabilities Revenue Operating profit/ (loss) Net profit/ (loss) Investment under the equity method Evacuación Valdecaballeros, S.L. 57.16 19,679 820 381 420 320 (668 ) (693 ) 8,773 Myah Bahr Honaine, S.P.A.(*) 25.50 186,484 63,224 81,942 13,184 50,118 25,778 22,193 43,161 Pectonex, R.F. Proprietary Limited 50.00 3,186 - - 2 - (209 ) (209 ) 1,485 Evacuación Villanueva del Rey, S.L 40.02 3,190 257 2,021 383 - 44 - - Ca Ku A1, S.A.P.I de CV (PTS) 5.00 284,375 10,951 - 295,865 - 3 (624 ) - As of December 31, 2018 53,419

Financial instruments by cate_2

Financial instruments by category (Tables)	12 Months Ended
	Dec. 31, 2019
Financial instruments by category [Abstract]
Financial assets	Notes Amortized cost Fair Value Through Other Comprehensive Income Fair value Through profit or loss Balance as of December 31, 2019 Derivative assets 9 - - 5,230 5,230 Investment in Ten West Link - 9,874 - 9,874 Investment in Rioglass - - 7,000 7,000 Other financial investments 288,060 - - 288,060 Trade and other receivables 11 317,568 - - 317,568 Cash and cash equivalents 12 562,795 - - 562,795 Total financial assets 1,168,423 9,874 12,230 1,190,527 Notes Amortized cost Fair Value Through Other Comprehensive Income Fair value Through profit or loss Balance as of December 31, 2018 Derivative assets 9 - - 13,153 13,153 Investment in Ten West Link - 6,034 - 6,034 Other financial investments 274,318 - - 274,318 Trade and other receivables 11 236,395 - - 236,395 Cash and cash equivalents 12 631,542 - - 631,542 Total financial assets 1,142,255 6,034 13,153 1,161,441
Financial liabilities	Corporate debt 14 723,791 - - 723,791 Project debt 15 4,852,348 - - 4,852,348 Related parties – non-current 10 17,115 - - 17,115 Trade and other current liabilities 17 128,062 - - 128,062 Derivative liabilities 9 - - 298,744 298,744 Total financial liabilities 5,721,316 - 298,744 6,020,060 Corporate debt 14 684,073 - - 684,073 Project debt 15 5,091,114 - - 5,091,114 Related parties – non-current 10 33,675 - - 33,675 Trade and other current liabilities 17 192,033 - - 192,033 Derivative liabilities 9 - - 279,152 279,152 Total financial liabilities 6,000,895 - 279,152 6,280,047

Derivative financial instrume_2

Derivative financial instruments (Tables)	12 Months Ended
	Dec. 31, 2019
Derivative financial instruments [Abstract]
Fair value amount of derivative financial instruments	The breakdowns of the fair value amount of the derivative financial instruments as of December 31, 2019 and 2018 are as follows: Balance as of December 31, 2019 Balance as of December 31, 2018 Assets Liabilities Assets Liabilities Interest rate cash flow hedge 1,619 298,744 9,923 279,152 Foreign exchange derivatives instruments 3,610 - 3,230 - Total 5,230 298,744 13,153 279,152
Maturities of notional and fair value amounts of interest rate derivatives designated as cash flow hedges	The table below shows a breakdown of the maturities of notional amounts of interest rate cash flow hedge derivatives as of December 31, 2019 and 2018. Notionals Balance as of December 31, 2019 Balance as of December 31, 2018 Assets Liabilities Assets Liabilities Up to 1 year 43,266 117,574 42,846 93,440 Between 1 and 2 years 45,955 124,908 45,603 119,568 Between 2 and 3 years 49,259 240,570 48,774 234,572 Subsequent years 455,235 1,697,033 535,774 1,858,061 Total $ 593,715 $ 2,180,085 $ 672,997 $ 2,305,641 The table below shows a breakdown of the maturity of the fair values of interest rate cash flow hedge derivatives as of December 31, 2019 and 2018: Fair value Balance as of December 31, 2019 Balance as of December 31, 2018 Assets Liabilities Assets Liabilities Up to 1 year 118 (18,721 ) 493 (11,848 ) Between 1 and 2 years 128 (19,787 ) 524 (13,231 ) Between 2 and 3 years 140 (21,802 ) 562 (15,151 ) Subsequent years 1,234 (238,434 ) 8,344 (238,922 ) Total $ 1,619 $ (298,744 ) $ 9,923 $ (279,152 )

Related parties (Tables)

Related parties (Tables)	12 Months Ended
	Dec. 31, 2019
Related parties [Abstract]
Related party receivables and payables	Details of balances with related parties as of December 31, 2019 and 2018, which therefore do not include balances with Abengoa, are as follows: Balance as of December 31, 2019 2018 Credit receivables (current) 13,350 5,328 Total current receivables with related parties 13,350 5,328 Credit receivables (non-current) 21,355 - Total non-current receivables with related parties 21,355 - Credit payables (current) 23,979 19,352 Total current payables with related parties 23,979 19,352 Credit payables (non-current) 17,115 33,675 Total non-current payables with related parties 17,115 33,675
Related party transactions	The transactions carried out by entities included in these consolidated financial statements with related parties not included in the consolidation perimeter of Atlantica, for the years ended December 31, 2019, 2018 and 2017 have been as follows: For the twelve-month period ended December 31, 2019 2018 2017 Services rendered - - 3,495 Services received - (101,582 ) (114,416 ) Financial income 978 3,721 74 Financial expenses (195 ) (398 ) (1,154 )

Trade and other receivables (Ta

Trade and other receivables (Tables)	12 Months Ended
	Dec. 31, 2019
Trade and other receivables [Abstract]
Trade and other receivables	Trade and other receivable as of December 31, 2019 and 2018, consist of the following: Balance as of December 31, 2019 2018 Trade receivables 242,008 163,856 Tax receivables 50,901 54,959 Prepayments 5,150 5,521 Other accounts receivable 19,508 12,059 Total 317,568 236,395
Trade receivables in foreign currency	Trade receivables in foreign currency as of December 31, 2019 and 2018, are as follows: Balance as of December 31, 2019 2018 Euro 108,280 91,303 South African Rand 24,289 25,193 Other 4,001 9,884 Total 136,570 126,380

Cash and cash equivalents (Tabl

Cash and cash equivalents (Tables)	12 Months Ended
	Dec. 31, 2019
Cash and cash equivalents [Abstract]
Cash and cash equivalents	The following table shows the detail of Cash and cash equivalents as of December 31, 2019 and 2018: Balance as of December 31, 2019 2018 Cash at bank and on hand - non restricted 223,867 335,114 Cash at bank and on hand - restricted 338,928 296,428 Total 562,795 631,542 The following breakdown shows the main currencies in which cash and cash equivalent balances are denominated: Balance as of December 31, Currency 2019 2018 U.S. dollar 313,678 328,716 Euro 181,961 228,036 Algerian Dinar 9,301 11,602 South African Rand 47,679 55,257 Others 10,176 7,931 Total 562,795 631,542

Corporate debt (Tables)

Corporate debt (Tables)	12 Months Ended
	Dec. 31, 2019
Corporate debt [Abstract]
Corporate debt	The breakdown of the corporate debt as of December 31, 2019 and 2018 is as follows: Balance as of December 31, Non-current 2019 2018 Credit Facilities with financial entities 695,085 415,168 Total Non-current 695,085 415,168 Balance as of December 31, Current 2019 2018 Credit Facilities with financial entities 789 11,580 Notes and Bonds 27,917 257,325 Total Current 28,706 268,905
Repayment schedule for corporate debt	The repayment schedule for the corporate debt as of December 31, 2019 is as follows: 2020 2021 2022 2023 2024 Subsequent years Total New Revolving Credit Facility 701 - 81,164 - - - 81,865 Note Issuance Facility 84 - 101,317 100,513 100,413 - 302,327 2017 Credit Facility 4 10,085 - - - - 10,089 2019 Notes Issuance Facility - 7,938 - - - 293,655 301,593 Commercial Paper 27,917 - - - - - 27,917 Total 28,706 18,023 182,481 100,513 100,413 293,655 723,791
Movement in corporate debt	The following table details the movement in Corporate debt for the year 2019, split between cash and non-cash items: January 1, 2019 Cash Flow Non-cash changes December 31, 2019 Corporate debt 684,073 6,620 33,098 723,791

Project debt (Tables)

Project debt (Tables)	12 Months Ended
	Dec. 31, 2019
Project debt [Abstract]
Project debt	The variations for 2019 and 2018 of project debt have been the following: Project debt - long term Project debt - short term Total Balance as of December 31, 2018 4,826,659 264,455 5,091,114 Increases 53,222 280,005 333,226 Decreases (19,272 ) (516,147 ) (535,418 ) Currency translation differences (33,718 ) (2,855 ) (36,574 ) Reclassifications (756,981 ) 756,981 - Balance as of December 31, 2019 4,069,909 782,439 4,852,348 Project debt - long term Project debt - short term Total Balance as of December 31, 2017 5,228,917 246,291 5,475,208 Increases 105,466 288,541 393,007 Decreases (98,450 ) (522,317 ) (620,767 ) First time application of IFRS 9 effective January 1, 2018 (39,599 ) - (39,599 ) Debt refinancing IFRS 9 impact (36,642 ) - (36,642 ) Change in the scope of the consolidated financial statements (Note 5) 79,016 2,346 81,362 Currency translation differences (150,019 ) (12,436 ) (162,455 ) Reclassifications (262,030 ) 262,030 - Balance as of December 31, 2018 4,826,659 264,455 5,091,114
Repayment schedule for project debt	The repayment schedule for project debt in accordance with the financing arrangements and assuming there will be no acceleration of the Mojave debt, as of December 31, 2019, is as follows and is consistent with the projected cash flows of the related projects: 2020 2021 2022 2023 2024 Subsequent years Total Interest Repayment Nominal repayment 12,799 256,620 262,787 293,642 319,962 335,067 3,371,724 4,852,348
Movement in project debt	The following table details the movement in Project debt for the year 2019, split between cash and non-cash items: January 1, 2019 Cash Flow Non-cash changes December 31, 2019 Project debt 5,091,114 (531,726 ) 292,960 4,852,348
Foreign currency-denominated project debt	The equivalent in U.S. dollars of the most significant foreign-currency-denominated debts held by the Company is as follows: Balance as of December 31, Currency 2019 2018 Euro 1,882,618 2,049,892 Algerian Dinar 24,331 29,545 South African Rand 384,313 384,915 Total 2,291,262 2,464,352

Grants and other liabilities (T

Grants and other liabilities (Tables)	12 Months Ended
	Dec. 31, 2019
Grants and other liabilities [Abstract]
Grants and other non-current liabilities	Grants and other liabilities as of December 31, 2019 and December 31, 2018 are as follows: Balance as of December 31, 2019 2018 Grants 1,087,553 1,150,805 Other liabilities 554,199 507,321 Grant and other non-current liabilities 1,641,752 1,658,126

Trade payables and other curr_2

Trade payables and other current liabilities (Tables)	12 Months Ended
	Dec. 31, 2019
Trade payables and other current liabilities [Abstract]
Trade payable and other current liabilities	Trade payables and other current liabilities as of December 31, 2019 and 2018 are as follows: Balance as of December 31, Item 2019 2018 Trade accounts payables 52,062 109,430 Down payments from clients 565 6,289 Liberty (see Note 16) 41,032 37,119 Other accounts payable 34,403 39,195 Total 128,062 192,033

Income Tax (Tables)

Income Tax (Tables)	12 Months Ended
	Dec. 31, 2019
Income Tax [Abstract]
Analysis of deferred tax assets and liabilities	As of December 31, 2019, and 2018, the analysis of deferred tax assets and deferred tax liabilities is as follows: Deferred tax assets Balance as of December 31, Concept 2019 2018 Net tax credits for tax losses carryforwards 61,693 55,835 Temporary differences on derivatives financial instruments 86,096 79,865 Other temporary differences 177 366 Total deferred tax assets 147,966 136,066 Deferred tax liabilities reversals are also considered in these projections, as well as any limitation established by tax regulations in force in each tax jurisdiction. Deferred tax liabilities Balance as of December 31, Concept 2019 2018 Temporary differences tax/book amortization 145,166 126,792 Other temporary differences tax/book value of contracted concessional assets 83,481 73,793 Other temporary differences 20,349 10,415 Total deferred tax liabilities 248,996 211,000
Movements in deferred tax assets and liabilities	The movements in deferred tax assets and liabilities during the years ended December 31, 2019 and 2018 were as follows: Deferred tax assets Amount As of December 31, 2017 165,136 First application of IFRS 9 effective January 1, 2018 11,811 Increase/(decrease) through the consolidated income statement (24,195 ) Increase/(decrease) through other consolidated comprehensive income (equity) (10,685 ) Other movements (6,001 ) As of December 31, 2018 136,066 Increase/(decrease) through the consolidated income statement 5,809 Increase/(decrease) through other consolidated comprehensive income (equity) 6,147 Other movements (56 ) As of December 31, 2019 147,966 Deferred tax liabilities Amount As of December 31, 2017 186,583 First application of IFRS 9 effective January 1, 2018 8,849 Increase/(decrease) through the consolidated income statement 17,996 Change in the scope of the consolidated financial statements (Note 5) 590 Other movements (3,018 ) As of December 31, 2018 211,000 Increase/(decrease) through the consolidated income statement 31,678 Change in the scope of the consolidated financial statements (Note 5) 2,539 Other movements 3,779 As of December 31, 2019 248,996
Income tax benefit/(expense)	Details of income tax for the years ended December 31, 2019, 2018 and 2017 are as follows: For the twelve-month period ended December 31, Item 2019 2018 2017 Current tax (5,081 ) (468 ) (1,998 ) Deferred tax (25,869 ) (42,191 ) (117,839 ) - relating to the origination and reversal of temporary differences (25,869 ) (42,191 ) (98,508 ) - relating to changes in tax rates - - (19,331 ) Total income tax benefit/(expense) (30,950 ) (42,659 ) (119,837 )
Effective income tax rate reconciliation	The reconciliation between the theoretical income tax resulting from applying an average statutory tax rate to profit/(loss) before income tax and the actual income tax expense recognized in the consolidated income statements for the years ended December 31, 2019, 2018 and 2017, are as follows: For the year ended December 31, Concept 2019 2018 2017 Consolidated income / (loss) before taxes 105,558 97,928 14,950 Average statutory tax rate 25 % 30 % 30 % Corporate income tax at average statutory tax rate (26,390 ) (29,378 ) (4,485 ) Income tax of associates, net 1,808 1,639 1,765 Differences in foreign tax rates (7,076 ) 752 3,304 Permanent differences 11,220 5,385 19,324 Incentives, deductions, and unrecognized tax losses carryforwards (14,161 ) (22,972 ) (20,994 ) Change in corporate income tax - - (19,331 ) U.S. Internal Revenue Code Section 382 - - (96,328 ) Other non-taxable income/(expense) 3,649 1,915 (3,092 ) Corporate income tax (30,950 ) (42,659 ) (119,837 )

Commitments, third-party guar_2

Commitments, third-party guarantees, contingent assets and liabilities (Tables)	12 Months Ended
	Dec. 31, 2019
Commitments, third-party guarantees, contingent assets and liabilities [Abstract]
Contractual obligations	The following tables shows the breakdown of the third-party commitments and contractual obligations as of December 31, 2019 and 2018: 2019 Total 2020 2021 and 2022 2023 and 2024 Subsequent Corporate debt 723,791 28,706 200,504 200,926 293,655 Loans with credit institutions (project debt) 4,105,915 241,116 504,921 598,837 2,761,041 Notes and bonds (project debt) 746,433 28,304 51,508 56,192 610,429 Purchase commitments* 2,991,432 129,595 278,418 269,632 2,313,787 Accrued interest estimate during the useful life of loans 2,472,070 294,676 549,320 471,535 1,156,539 2018 Total 2019 2020 and 2021 2022 and 2023 Subsequent Corporate debt 684,073 268,905 107,560 205,258 102,350 Loans with credit institutions (project debt) 4,314,307 233,214 476,191 571,374 3,033,528 Notes and bonds (project debt) 776,807 31,241 49,445 54,879 641,242 Purchase commitments* 3,082,495 131,417 264,461 259,775 2,426,842 Accrued interest estimate during the useful life of loans 2,743,132 314,984 565,040 492,932 1,370,176

Other operating income and ex_2

Other operating income and expenses (Tables)	12 Months Ended
	Dec. 31, 2019
Other operating income and expenses [Abstract]
Other operating income	The table below shows the detail of Other operating income and expenses for the years ended December 31, 2019, 2018 and 2017: For the twelve-month year ended December 31, Other operating income 2019 2018 2017 Grants 59,142 59,421 59,707 Income from various services and insurance proceeds 34,632 34,181 21,137 Income from the purchase of the long-term operation and maintenance payable to Abengoa - 38,955 - Total 93,774 132,557 80,844
Other operating expenses	For the twelve-month year ended December 31, Other operating expenses 2019 2018 2017 Raw materials and consumables used (9,719 ) (10,648 ) (16,983 ) Leases and fees (1,850 ) (1,716 ) (6,641 ) Operation and maintenance (116,018 ) (145,857 ) (129,873 ) Independent professional services (41,579 ) (43,229 ) (36,178 ) Supplies (25,823 ) (25,947 ) (20,350 ) Insurance (23,971 ) (24,227 ) (24,289 ) Levies and duties (34,844 ) (37,439 ) (52,409 ) Other expenses (7,971 ) (21,579 ) (14,721 ) Total (261,776 ) (310,642 ) (301,444 )

Financial income and expenses (

Financial income and expenses (Tables)	12 Months Ended
	Dec. 31, 2019
Financial income and expenses [Abstract]
Financial income	The following table sets forth financial income and expenses for the years ended December 31, 2019, 2018 and 2017: For the year ended December 31, Financial income 2019 2018 2017 Interest income from loans and credits 3,665 36,296 325 Interest rates benefits derivatives: cash flow hedges 456 148 682 Total 4,121 36,444 1,007
Financial expenses	For the year ended December 31, Financial expenses 2019 2018 2017 Expenses due to interest: - Loans from credit entities (259,416 ) (256,736 ) (253,660 ) - Other debts (89,256 ) (100,057 ) (137,562 ) Interest rates losses derivatives: cash flow hedges (59,318 ) (68,226 ) (72,495 ) Total (407,990 ) (425,019 ) (463,717 )
Other net financial income and expenses	The following table sets out Other net financial income and expenses for the years 2019, 2018 and 2017: For the year ended December 31, Other financial income / (expenses) 2019 2018 2017 Dividend from ACBH (Brazil) - - 10,383 Other financial income 14,152 14,431 28,809 Other financial losses (15,305 ) (22,666 ) (20,758 ) Total (1,153 ) (8,235 ) 18,434

Earnings per share (Tables)

Earnings per share (Tables)	12 Months Ended
	Dec. 31, 2019
Earnings per share [Abstract]
Earnings per share	Basic earnings per share for the year 2019 has been calculated by dividing the profit/(loss) attributable to equity holders of the company by the number of shares outstanding. Diluted earnings per share equals basic earnings per share for the years presented. For the year ended December 31, Item 2019 2018 2017 Profit/(loss) from continuing operations attributable to Atlantica Yield Plc. 62,135 41,596 (111,804 ) Average number of ordinary shares outstanding (thousands) - basic and diluted 101,063 100,217 100,217 Earnings per share from continuing operations (US dollar per share) - basic and diluted 0.61 0.42 (1.12 ) Earnings per share from profit/ (loss) for the period (US dollar per share) - basic and diluted 0.61 0.42 (1.12 )

Nature of the business, Descrip

Nature of the business, Description (Details)	May 31, 2019	May 22, 2019	Nov. 27, 2018	Mar. 09, 2018	Nov. 30, 2017	Dec. 31, 2019
Non- Algonquin [Member]
Nature of the business [Abstract]
Proportion of voting rights held by non-controlling interests						7.00%
Algonquin [Member]
Nature of the business [Abstract]
Ownership interest	44.20%	42.27%			25.00%	44.20%
Percentage of non-controlling interests			16.47%	25.00%
Proportion of voting rights held by non-controlling interests						41.50%
Algonquin [Member] | Top of Range [Member]
Nature of the business [Abstract]
Ownership interest						48.50%

Nature of the business, Assets

Nature of the business, Assets acquired (Details) $ in Thousands		Aug. 02, 2019USD ($)MWCorporation	May 24, 2019USD ($)MW	May 09, 2019USD ($)MW	Jan. 29, 2019USD ($)	Oct. 31, 2019USD ($)	Dec. 31, 2019USD ($)	Dec. 31, 2018USD ($)MWkV	Oct. 22, 2019USD ($)	Dec. 31, 2017USD ($)
Nature of the business [Abstract]
Investments carried under the equity method							$ 139,925	$ 53,419		$ 55,784
Befesa Agua Tenes, S.L.U. [Member]
Nature of the business [Abstract]
Ownership interest					51.00%
Equity value of agreed price					$ 24,500
Consideration payment advanced					$ 19,900
Interest rate					12.00%
Payment received through cash sweep mechanism						$ 7,800
Monterrey [Member]
Nature of the business [Abstract]
Percentage interest acquired		30.00%
Gross capacity | MW		142
Acquisition purchase price		$ 42,000
Ownership percentage acquired		30.00%
Installed capacity | MW		130
Battery capacity | MW		12
Period of PPA		20 years
Number of international corporations | Corporation		2
Ownership percentage to be acquired under ROFO agreement		70.00%
Investments carried under the equity method		$ 16,600
Amherst Island [Member]
Nature of the business [Abstract]
Gross capacity | MW			75	75
Installed capacity | MW				75
Investments carried under the equity method			$ 4,900	$ 4,900
ASI Operations LLC [Member]
Nature of the business [Abstract]
Percentage interest acquired		100.00%
Acquisition purchase price		$ 6,000
Investments carried under the equity method		$ 6,000
ATN2 [Member]
Nature of the business [Abstract]
Acquisition purchase price									$ 20,000
Chile TL3 [Member]
Nature of the business [Abstract]
Gross capacity | kV								66
Ownership interest							100.00%
Mini- Hydro [Member]
Nature of the business [Abstract]
Percentage interest acquired								100.00%
Gross capacity | MW								4
Melowind [Member]
Nature of the business [Abstract]
Percentage interest acquired								100.00%
Gross capacity | MW								50
Ownership interest							100.00%
Solacor 1/2 [Member]
Nature of the business [Abstract]
Ownership interest	[1]						87.00%
Seville PV [Member]
Nature of the business [Abstract]
Ownership interest	[2]						80.00%
PTS [Member]
Nature of the business [Abstract]
Percentage interest acquired								5.00%
[1]	JGC, a Japanese engineering company, holds 13% of the shares in each of Solacor 1 and Solacor 2.
[2]	Instituto para la Diversificacion y Ahorro de la Energia ("Idae"), a Spanish state owned company, holds 20% of the shares in Seville PV.

Nature of the business, Concess

Nature of the business, Concessional assets owned (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2019	Sep. 30, 2013
ACT [Member]
Nature of the business [Abstract]
Type		Efficient natural gas
Ownership		100.00%
Location		Mexico
Currency	[1]	USD
Capacity (gross)		300 MW
Counterparty credit ratings	[2]	BBB+/ Baa3/BB+
COD	[3]	2013
Contract years left	[4]	13 years
Monterrey [Member]
Nature of the business [Abstract]
Type		Efficient natural gas
Ownership		30.00%
Location		Mexico
Currency	[1]	USD
Capacity (gross)		142 MW
Counterparty credit ratings	[2]	Not rated
COD	[3]	2018
Contract years left	[4]	19 years
ATN [Member]
Nature of the business [Abstract]
Type	[5]	Transmission line
Ownership		100.00%
Location		Peru
Currency	[1]	USD
Capacity (gross)		379 miles
Counterparty credit ratings	[2]	BBB+/A3/BBB+
COD	[3]	2011
Contract years left	[4]	21 years
ATS [Member]
Nature of the business [Abstract]
Type		Transmission line
Ownership		100.00%
Location		Peru
Currency	[1]	USD
Capacity (gross)		569 miles
Counterparty credit ratings	[2]	BBB+/A3/BBB+
COD	[3]	2014
Contract years left	[4]	24 years
ATN2 [Member]
Nature of the business [Abstract]
Type		Transmission line
Ownership		100.00%
Location		Peru
Currency	[1]	USD
Capacity (gross)		81 miles
Counterparty credit ratings	[2]	Not rated
COD	[3]	2015
Contract years left	[4]	13 years
Quadra 1 [Member]
Nature of the business [Abstract]
Type		Transmission line
Ownership		100.00%
Location		Chile
Currency	[1]	USD
Capacity (gross)		49 miles
Counterparty credit ratings	[2]	Not rated
COD	[3]	2014
Contract years left	[4]	15 years
Quadra 2 [Member]
Nature of the business [Abstract]
Type		Transmission line
Ownership		100.00%
Location		Chile
Currency	[1]	USD
Capacity (gross)		32 miles
Counterparty credit ratings	[2]	Not rated
COD	[3]	2014
Contract years left	[4]	15 years
Palmucho [Member]
Nature of the business [Abstract]
Type		Transmission line
Ownership		100.00%
Location		Chile
Currency	[1]	USD
Capacity (gross)		6 miles
Counterparty credit ratings	[2]	BBB+/Baa2/BBB+
COD	[3]	2007
Contract years left	[4]	18 years
Chile TL3 [Member]
Nature of the business [Abstract]
Type		Transmission line
Ownership		100.00%
Location		Chile
Currency	[1]	USD
Capacity (gross)		50 miles
Counterparty credit ratings	[2]	A+/A1/A
COD	[3]	1993
Skikda [Member]
Nature of the business [Abstract]
Type		Water
Ownership	[6]	34.20%
Location		Algeria
Currency	[1]	USD
Capacity (gross)		3.5 M ft3/day
Counterparty credit ratings	[2]	Not rated
COD	[3]	2009
Contract years left	[4]	14 years
Skikda [Member] | Algerian Energy Company, SPA [Member]
Nature of the business [Abstract]
Percentage of non-controlling interests		49.00%
Skikda [Member] | Valoriza Agua, S.L. [Member]
Nature of the business [Abstract]
Percentage of non-controlling interests		16.83%
Honaine [Member]
Nature of the business [Abstract]
Type		Water
Ownership	[7]	25.50%
Location		Algeria
Currency	[1]	USD
Capacity (gross)		7 M ft3/day
Counterparty credit ratings	[2]	Not rated
COD	[3]	2012
Contract years left	[4]	18 years
Honaine [Member] | Algerian Energy Company, SPA [Member]
Nature of the business [Abstract]
Percentage of non-controlling interests		49.00%
Honaine [Member] | Valoriza Agua, S.L. [Member]
Nature of the business [Abstract]
Percentage of non-controlling interests		25.50%
PS10/PS20 [Member]
Nature of the business [Abstract]
Type		Renewable (Solar)
Ownership		100.00%
Location		Spain
Currency	[1]	Euro
Capacity (gross)		31 MW
Counterparty credit ratings	[2]	A/Baa1/A-
COD	[3]	2007 & 2009
PS10 [Member]
Nature of the business [Abstract]
Contract years left	[4]	12 years
PS20 [Member]
Nature of the business [Abstract]
Contract years left	[4]	14 years
Solana [Member]
Nature of the business [Abstract]
Type		Renewable (Solar)
Ownership		100.00%
Ownership interest type	[8]	Class B
Location		Arizona (USA)
Currency	[1]	USD
Capacity (gross)		280 MW
Counterparty credit ratings	[2]	A-/A2/A-
COD	[3]	2013
Contract years left	[4]	24 years
Solana [Member] | Liberty Interactive Corporation [Member]
Nature of the business [Abstract]
Class A membership investment			$ 300
Mojave [Member]
Nature of the business [Abstract]
Type		Renewable (Solar)
Ownership		100.00%
Location		California (USA)
Currency	[1]	USD
Capacity (gross)		280 MW
Counterparty credit ratings	[2]	D/WR/WD
COD	[3]	2014
Contract years left	[4]	20 years
Solaben 2 & 3 [Member]
Nature of the business [Abstract]
Type		Renewable (Solar)
Ownership	[9]	70.00%
Location		Spain
Currency	[1]	Euro
Capacity (gross)		2x50 MW
Counterparty credit ratings	[2]	A/Baa1/A-
COD	[3]	2012
Solaben 2 & 3 [Member] | Itochu Corporation [Member]
Nature of the business [Abstract]
Percentage of non-controlling interests		30.00%
Solaben 2 [Member]
Nature of the business [Abstract]
Contract years left	[4]	18 years
Solaben 3 [Member]
Nature of the business [Abstract]
Contract years left	[4]	17 years
Solacor 1 & 2 [Member]
Nature of the business [Abstract]
Type		Renewable (Solar)
Ownership	[10]	87.00%
Location		Spain
Currency	[1]	Euro
Capacity (gross)		2x50 MW
Counterparty credit ratings	[2]	A/Baa1/A-
COD	[3]	2012
Solacor 1 & 2 [Member] | JGC [Member]
Nature of the business [Abstract]
Percentage of non-controlling interests		13.00%
Solacor 1 [Member]
Nature of the business [Abstract]
Contract years left	[4]	17 years
Solacor 2 [Member]
Nature of the business [Abstract]
Contract years left	[4]	17 years
Helioenergy 1 & 2 [Member]
Nature of the business [Abstract]
Type		Renewable (Solar)
Ownership		100.00%
Location		Spain
Currency	[1]	Euro
Capacity (gross)		2x50 MW
Counterparty credit ratings	[2]	A/Baa1/A-
COD	[3]	2011
Helioenergy 1 [Member]
Nature of the business [Abstract]
Contract years left	[4]	17 years
Helioenergy 2 [Member]
Nature of the business [Abstract]
Contract years left	[4]	17 years
Helios 1 & 2 [Member]
Nature of the business [Abstract]
Type		Renewable (Solar)
Ownership		100.00%
Location		Spain
Currency	[1]	Euro
Capacity (gross)		2x50 MW
Counterparty credit ratings	[2]	A/Baa1/A-
COD	[3]	2012
Helios 1 [Member]
Nature of the business [Abstract]
Contract years left	[4]	18 years
Helios 2 [Member]
Nature of the business [Abstract]
Contract years left	[4]	18 years
Solnova 1, 3 & 4 [Member]
Nature of the business [Abstract]
Type		Renewable (Solar)
Ownership		100.00%
Location		Spain
Currency	[1]	Euro
Capacity (gross)		3x50 MW
Counterparty credit ratings	[2]	A/Baa1/A-
COD	[3]	2010
Solnova 1 [Member]
Nature of the business [Abstract]
Contract years left	[4]	15 years
Solnova 3 [Member]
Nature of the business [Abstract]
Contract years left	[4]	15 years
Solnova 4 [Member]
Nature of the business [Abstract]
Contract years left	[4]	16 years
Solaben 1 & 6 [Member]
Nature of the business [Abstract]
Type		Renewable (Solar)
Ownership		100.00%
Location		Spain
Currency	[1]	Euro
Capacity (gross)		2x50 MW
Counterparty credit ratings	[2]	A/Baa1/A-
COD	[3]	2013
Solaben 1 [Member]
Nature of the business [Abstract]
Contract years left	[4]	19 years
Solaben 6 [Member]
Nature of the business [Abstract]
Contract years left	[4]	19 years
Kaxu [Member]
Nature of the business [Abstract]
Type		Renewable (Solar)
Ownership	[11]	51.00%
Location		South Africa
Currency	[1]	Rand
Capacity (gross)		100 MW
Counterparty credit ratings	[2],[12]	BB/Baa3/BB+
COD	[3]	2015
Contract years left	[4]	15 years
Kaxu [Member] | IDC [Member]
Nature of the business [Abstract]
Percentage of non-controlling interests		29.00%
Kaxu [Member] | Kaxu Community Trust [Member]
Nature of the business [Abstract]
Percentage of non-controlling interests		20.00%
Palmatir [Member]
Nature of the business [Abstract]
Type		Renewable (Wind)
Ownership		100.00%
Location		Uruguay
Currency	[1]	USD
Capacity (gross)		50 MW
Counterparty credit ratings	[2],[13]	BBB/Baa2/BBB-
COD	[3]	2014
Contract years left	[4]	14 years
Cadonal [Member]
Nature of the business [Abstract]
Type		Renewable (Wind)
Ownership		100.00%
Location		Uruguay
Currency	[1]	USD
Capacity (gross)		50 MW
Counterparty credit ratings	[2],[13]	BBB/Baa2/BBB-
COD	[3]	2014
Contract years left	[4]	15 years
Seville PV [Member]
Nature of the business [Abstract]
Type		Renewable (Solar)
Ownership	[14]	80.00%
Location		Spain
Currency	[1]	Euro
Capacity (gross)		1 MW
Counterparty credit ratings	[2]	A/Baa1/A-
COD	[3]	2006
Contract years left	[4]	16 years
Seville PV [Member] | Idae [Member]
Nature of the business [Abstract]
Percentage of non-controlling interests		20.00%
Melowind [Member]
Nature of the business [Abstract]
Type		Renewable (Wind)
Ownership		100.00%
Location		Uruguay
Currency	[1]	USD
Capacity (gross)		50MW
Counterparty credit ratings	[2]	BBB/Baa2/BBB-
COD	[3]	2015
Contract years left	[4]	16 years
Mini-Hydro [Member]
Nature of the business [Abstract]
Type		Renewable (Hydraulic)
Ownership		100.00%
Location		Peru
Currency	[1]	USD
Capacity (gross)		4 MW
Counterparty credit ratings	[2]	BBB+/A3/ BBB+
COD	[3]	2012
Contract years left	[4]	13 years
[1]	Certain contracts denominated in U.S. dollars are payable in local currency.
[2]	Reflects the counterparty's credit ratings issued by Standard & Poor's Ratings Services, or S&P, Moody's Investors Service Inc., or Moody's, and Fitch Ratings Ltd, or Fitch.
[3]	Commercial Operation Date.
[4]	As of December 31, 2019.
[5]	Including the acquisition of ATN Expansion 1 & 2.
[6]	Algerian Energy Company, SPA owns 49% of Skikda and Sacyr Agua, S.L. owns the remaining 16.83%.
[7]	Algerian Energy Company, SPA owns 49% of Honaine and Sacyr Agua, S.L. owns the remaining 25.5%.
[8]	On September 30, 2013, Liberty Interactive Corporation agreed to invest $300 million in Class A shares of ASO Holdings Company LLC, the holding company of Solana, in exchange for a share of the dividends and the taxable losses generated by Solana.
[9]	Itochu Corporation, a Japanese trading company, holds 30% of the shares in each of Solaben 2 and Solaben 3.
[10]	JGC, a Japanese engineering company, holds 13% of the shares in each of Solacor 1 and Solacor 2.
[11]	Kaxu is owned by the Company (51%), Industrial Development Corporation of South Africa (29%) and Kaxu Community Trust (20%).
[12]	Refers to the credit rating of the Republic of South Africa. The offtaker is Eskom, which is a state-owned utility company in South Africa.
[13]	Refers to the credit rating of Uruguay, as UTE (Administracion Nacional de Usinas y Transmisoras Electricas) is unrated.
[14]	Instituto para la Diversificacion y Ahorro de la Energia ("Idae"), a Spanish state owned company, holds 20% of the shares in Seville PV.

Significant accounting polici_4

Significant accounting policies, Asset impairment (Details)	Dec. 31, 2019
EMEA [Member]
Cash-generating units [Abstract]
Growth rate	0.00%
EMEA [Member] | Bottom of Range [Member]
Cash-generating units [Abstract]
Discount rate	4.00%
EMEA [Member] | Top of Range [Member]
Cash-generating units [Abstract]
Discount rate	6.00%
North America [Member]
Cash-generating units [Abstract]
Growth rate	0.00%
North America [Member] | Bottom of Range [Member]
Cash-generating units [Abstract]
Discount rate	4.00%
North America [Member] | Top of Range [Member]
Cash-generating units [Abstract]
Discount rate	5.00%
South America [Member]
Cash-generating units [Abstract]
Growth rate	0.00%
South America [Member] | Bottom of Range [Member]
Cash-generating units [Abstract]
Discount rate	5.00%
South America [Member] | Top of Range [Member]
Cash-generating units [Abstract]
Discount rate	7.00%

Financial risk management (Deta

Financial risk management (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Interest Rate Risk [Member]
Financial risk management [Abstract]
Forecasted increase in benchmark interest rate	0.25%
Forecasted loss on cash flow hedges due to increase in benchmark interest rate	$ (2,745)	$ (2,731)	$ (1,066)
Forecasted increase in hedging reserves due to increase in benchmark interest rate	$ 27,570	$ 32,928	$ 39,142
Interest Rate Risk [Member] | Euros [Member]
Financial risk management [Abstract]
Maturity date	2030
Interest Rate Risk [Member] | Euros [Member] | Bottom of Range [Member]
Financial risk management [Abstract]
Percentage of notional amount of debt hedged	81.00%
Interest rate	0.89%
Interest Rate Risk [Member] | Euros [Member] | Top of Range [Member]
Financial risk management [Abstract]
Percentage of notional amount of debt hedged	100.00%
Interest rate	4.87%
Interest Rate Risk [Member] | U.S. Dollars [Member]
Financial risk management [Abstract]
Maturity date	2034
Interest Rate Risk [Member] | U.S. Dollars [Member] | Bottom of Range [Member]
Financial risk management [Abstract]
Percentage of notional amount of debt hedged	70.00%
Interest rate	1.98%
Interest Rate Risk [Member] | U.S. Dollars [Member] | Top of Range [Member]
Financial risk management [Abstract]
Percentage of notional amount of debt hedged	100.00%
Interest rate	5.27%
Currency Risk [Member]
Financial risk management [Abstract]
Net Euro exposure percentage for next fiscal year	100.00%
Net Euro exposure percentage for following fiscal period	75.00%

Financial information by segm_3

Financial information by segment, Business sectors (Details) ft³ / d in Millions	12 Months Ended
	Dec. 31, 2019ft³ / dMWPlantLineWindFarmSolarPlatformmi	Dec. 31, 2018MW
Melowind [Member]
Financial information by segment [Abstract]
Gross capacity		50
United States [Member] | Renewable Energy [Member] | Solana [Member]
Financial information by segment [Abstract]
Number of contracted assets | Plant	1
Gross capacity	280
United States [Member] | Renewable Energy [Member] | Mojave [Member]
Financial information by segment [Abstract]
Number of contracted assets | Plant	1
Gross capacity	280
Spain [Member] | Renewable Energy [Member]
Financial information by segment [Abstract]
Number of contracted assets | SolarPlatform	8
Spain [Member] | Renewable Energy [Member] | PS10/PS20 [Member]
Financial information by segment [Abstract]
Gross capacity	31
Spain [Member] | Renewable Energy [Member] | Solacor 1 and Solacor 2 [Member]
Financial information by segment [Abstract]
Gross capacity	100
Spain [Member] | Renewable Energy [Member] | Solaben 2 and 3 [Member]
Financial information by segment [Abstract]
Gross capacity	100
Spain [Member] | Renewable Energy [Member] | Helioenergy 1 and 2 [Member]
Financial information by segment [Abstract]
Gross capacity	100
Spain [Member] | Renewable Energy [Member] | Helios 1 and 2 [Member]
Financial information by segment [Abstract]
Gross capacity	100
Spain [Member] | Renewable Energy [Member] | Solnova 1, 3 and 4 [Member]
Financial information by segment [Abstract]
Gross capacity	150
Spain [Member] | Renewable Energy [Member] | Solaben 1 and 6 [Member]
Financial information by segment [Abstract]
Gross capacity	100
Spain [Member] | Renewable Energy [Member] | Seville PV [Member]
Financial information by segment [Abstract]
Gross capacity	1
South Africa [Member] | Renewable Energy [Member] | Kaxu [Member]
Financial information by segment [Abstract]
Number of contracted assets | Plant	1
Gross capacity	100
Uruguay [Member] | Renewable Energy [Member] | Palmatir [Member]
Financial information by segment [Abstract]
Number of contracted assets | WindFarm	1
Gross capacity	50
Uruguay [Member] | Renewable Energy [Member] | Cadonal [Member]
Financial information by segment [Abstract]
Number of contracted assets | WindFarm	1
Gross capacity	50
Uruguay [Member] | Renewable Energy [Member] | Melowind [Member]
Financial information by segment [Abstract]
Number of contracted assets | WindFarm	1
Gross capacity	50
Mexico [Member] | Efficient Natural Gas [Member] | ACT [Member]
Financial information by segment [Abstract]
Gross capacity	300
Term of take-or-pay contract	20 years
Mexico [Member] | Efficient Natural Gas [Member] | Monterrey [Member]
Financial information by segment [Abstract]
Gross capacity	142
Installed capacity	130
Battery capacity	12
Peru [Member] | Renewable Energy [Member]
Financial information by segment [Abstract]
Gross capacity	4
Peru [Member] | Electric Transmission Lines [Member] | ATN, ATS and ATN2 [Member]
Financial information by segment [Abstract]
Number of contracted assets | Line	3
Length of transmission lines | mi	1,029
Chile [Member] | Electric Transmission Lines [Member] | Quadra 1, Quadra 2, Palmucho and Chile TL3 [Member]
Financial information by segment [Abstract]
Number of contracted assets | Line	4
Length of transmission lines | mi	137
Algeria [Member] | Water [Member] | Honaine and Skikda [Member]
Financial information by segment [Abstract]
Number of contracted assets | Plant	2
Aggregate capacity | ft³ / d	10.5

Financial information by segm_4

Financial information by segment, Revenues and Further Adjusted EBITDA (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)Customer	Dec. 31, 2018USD ($)Customer	Dec. 31, 2017USD ($)
Financial information by segment [Abstract]
Number of customers representing more than 10% of total revenues | Customer	4	4
Revenue	$ 1,011,452	$ 1,043,822	$ 1,008,381
Further Adjusted EBITDA	$ 811,204	$ 850,607	779,310
Renewable Energy [Member]
Financial information by segment [Abstract]
Number of customers representing more than 10% of total revenues | Customer	3	3
Revenue	$ 761,090	$ 793,557	767,226
Further Adjusted EBITDA	$ 603,666	$ 664,428	569,193
Efficient Natural Gas [Member]
Financial information by segment [Abstract]
Number of customers representing more than 10% of total revenues | Customer	1	1
Revenue	$ 122,281	$ 130,799	119,784
Further Adjusted EBITDA	107,457	93,858	106,140
Electric Transmission Lines [Member]
Financial information by segment [Abstract]
Revenue	103,453	95,998	95,096
Further Adjusted EBITDA	85,657	78,461	87,695
Water [Member]
Financial information by segment [Abstract]
Revenue	24,629	23,468	26,275
Further Adjusted EBITDA	14,424	13,860	16,282
North America [Member]
Financial information by segment [Abstract]
Revenue	332,965	357,177	332,705
Further Adjusted EBITDA	305,085	308,748	282,328
South America [Member]
Financial information by segment [Abstract]
Revenue	142,207	123,214	120,797
Further Adjusted EBITDA	115,346	100,234	108,766
EMEA [Member]
Financial information by segment [Abstract]
Revenue	536,280	563,431	554,879
Further Adjusted EBITDA	$ 390,774	$ 441,625	$ 388,216

Financial information by segm_5

Financial information by segment, Reconciliation of segment Further Adjusted EBITDA (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Financial information by segment [Abstract]
Profit/(Loss) attributable to the Company	$ 62,135	$ 41,596	$ (111,804)
Profit attributable to non-controlling interests	(12,473)	(13,673)	(6,917)
Income tax	30,950	42,659	119,837
Share of profits/(losses) of associates	7,457	5,231	5,351
Dividend from exchangeable preferred equity investment in ACBH (Note 21)	0	0	10,383
Financial expense, net	402,348	395,213	448,368
Depreciation, amortization, and impairment charges	310,755	362,697	310,960
Total segment Further Adjusted EBITDA	811,204	850,607	779,310
Reconciling Item [Member]
Financial information by segment [Abstract]
Profit/(Loss) attributable to the Company	62,135	41,596	(111,804)
Profit attributable to non-controlling interests	12,473	13,673	6,917
Income tax	30,950	42,659	119,837
Share of profits/(losses) of associates	(7,457)	(5,231)	(5,351)
Dividend from exchangeable preferred equity investment in ACBH (Note 21)	0	0	10,383
Financial expense, net	402,348	395,213	448,368
Depreciation, amortization, and impairment charges	310,755	362,697	310,960
Allocated [Member]
Financial information by segment [Abstract]
Total segment Further Adjusted EBITDA	$ 811,204	$ 850,607	$ 779,310

Financial information by segm_6

Financial information by segment, Assets and liabilities by geography (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Assets allocated [Abstract]
Contracted concessional assets	$ 8,161,129	$ 8,549,181
Investments carried under the equity method	139,925	53,419	$ 55,784
Current financial investments	218,577	240,834
Cash and cash equivalents (project companies)	562,795	631,542	669,387	$ 594,811
Total assets	9,659,815	9,919,031
Liabilities allocated [Abstract]
Long-term and short-term project debt	4,852,348	5,091,114	5,475,208
Grants and other liabilities	1,641,752	1,658,126
Long-term and short-term corporate debt	723,791	684,073
Total liabilities	7,944,959	8,162,919
Equity	1,714,856	1,756,112	$ 1,895,453	$ 1,959,111
Total liabilities and equity	9,659,815	9,919,031
North America [Member]
Assets allocated [Abstract]
Contracted concessional assets	3,299,198	3,453,652
Investments carried under the equity method	90,847	0
Current financial investments	159,267	147,213
Cash and cash equivalents (project companies)	181,458	195,678
Total assets	3,730,771	3,796,543
Liabilities allocated [Abstract]
Long-term and short-term project debt	1,676,251	1,725,961
Grants and other liabilities	1,490,679	1,527,724
Total liabilities	3,166,930	3,253,685
South America [Member]
Assets allocated [Abstract]
Contracted concessional assets	1,186,552	1,210,624
Investments carried under the equity method	0	0
Current financial investments	29,190	61,959
Cash and cash equivalents (project companies)	80,909	41,316
Total assets	1,296,652	1,313,899
Liabilities allocated [Abstract]
Long-term and short-term project debt	884,835	900,801
Grants and other liabilities	12,864	7,550
Total liabilities	897,699	908,351
EMEA [Member]
Assets allocated [Abstract]
Contracted concessional assets	3,675,379	3,884,905
Investments carried under the equity method	49,078	53,419
Current financial investments	20,673	30,080
Cash and cash equivalents (project companies)	234,097	287,456
Total assets	3,979,227	4,255,860
Liabilities allocated [Abstract]
Long-term and short-term project debt	2,291,262	2,464,352
Grants and other liabilities	138,209	122,852
Total liabilities	2,429,471	2,587,204
Allocated [Member]
Assets allocated [Abstract]
Contracted concessional assets	8,161,129	8,549,181
Investments carried under the equity method	139,925	53,419
Current financial investments	209,131	239,252
Cash and cash equivalents (project companies)	496,464	524,450
Total assets	9,006,649	9,366,302
Liabilities allocated [Abstract]
Long-term and short-term project debt	4,852,348	5,091,114
Grants and other liabilities	1,641,752	1,658,126
Total liabilities	6,494,100	6,749,240
Unallocated [Member]
Assets allocated [Abstract]
Other non-current assets	239,553	188,736
Other current assets (including cash and cash equivalents at holding company level)	413,613	363,993
Total assets	653,166	552,729
Liabilities allocated [Abstract]
Long-term and short-term corporate debt	723,791	684,073
Other non-current liabilities	564,855	523,827
Other current liabilities	162,213	205,779
Total liabilities	1,450,859	1,413,679
Equity	1,714,856	1,756,112
Total liabilities and equity	$ 3,165,715	$ 3,169,791

Financial information by segm_7

Financial information by segment, Assets and liabilities by business sectors (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Assets allocated [Abstract]
Contracted concessional assets	$ 8,161,129	$ 8,549,181
Investments carried under the equity method	139,925	53,419	$ 55,784
Current financial investments	218,577	240,834
Cash and cash equivalents (project companies)	562,795	631,542	669,387	$ 594,811
Total assets	9,659,815	9,919,031
Liabilities allocated [Abstract]
Long-term and short-term project debt	4,852,348	5,091,114	5,475,208
Grants and other liabilities	1,641,752	1,658,126
Long-term and short-term corporate debt	723,791	684,073
Total liabilities	7,944,959	8,162,919
Equity	1,714,856	1,756,112	$ 1,895,453	$ 1,959,111
Total liabilities and equity	9,659,815	9,919,031
Renewable Energy [Member]
Assets allocated [Abstract]
Contracted concessional assets	6,644,024	6,998,020
Investments carried under the equity method	77,549	10,257
Current financial investments	13,798	15,396
Cash and cash equivalents (project companies)	421,198	453,096
Total assets	7,156,568	7,476,769
Liabilities allocated [Abstract]
Long-term and short-term project debt	3,658,507	3,868,626
Grants and other liabilities	1,634,361	1,656,146
Total liabilities	5,292,868	5,524,772
Efficient Natural Gas [Member]
Assets allocated [Abstract]
Contracted concessional assets	559,069	580,997
Investments carried under the equity method	17,154	0
Current financial investments	148,723	147,192
Cash and cash equivalents (project companies)	11,850	45,625
Total assets	736,796	773,814
Liabilities allocated [Abstract]
Long-term and short-term project debt	529,350	545,123
Grants and other liabilities	146	161
Total liabilities	529,495	545,284
Electric Transmission Lines [Member]
Assets allocated [Abstract]
Contracted concessional assets	872,757	882,980
Investments carried under the equity method	0	0
Current financial investments	28,237	61,102
Cash and cash equivalents (project companies)	53,868	14,043
Total assets	954,862	958,125
Liabilities allocated [Abstract]
Long-term and short-term project debt	640,160	647,820
Grants and other liabilities	6,517	1,025
Total liabilities	646,677	648,845
Water [Member]
Assets allocated [Abstract]
Contracted concessional assets	85,280	87,184
Investments carried under the equity method	45,222	43,162
Current financial investments	18,373	15,562
Cash and cash equivalents (project companies)	9,548	11,686
Total assets	158,423	157,594
Liabilities allocated [Abstract]
Long-term and short-term project debt	24,331	29,545
Grants and other liabilities	728	794
Total liabilities	25,059	30,339
Allocated [Member]
Assets allocated [Abstract]
Contracted concessional assets	8,161,129	8,549,181
Investments carried under the equity method	139,925	53,419
Current financial investments	209,131	239,252
Cash and cash equivalents (project companies)	496,464	524,450
Total assets	9,006,649	9,366,302
Liabilities allocated [Abstract]
Long-term and short-term project debt	4,852,348	5,091,114
Grants and other liabilities	1,641,752	1,658,126
Total liabilities	6,494,100	6,749,240
Unallocated [Member]
Assets allocated [Abstract]
Other non-current assets	239,553	188,736
Other current assets (including cash and cash equivalents at holding company level)	413,613	363,993
Total assets	653,166	552,729
Liabilities allocated [Abstract]
Long-term and short-term corporate debt	723,791	684,073
Other non-current liabilities	564,855	523,827
Other current liabilities	162,213	205,779
Total liabilities	1,450,859	1,413,679
Equity	1,714,856	1,756,112
Total liabilities and equity	$ 3,165,715	$ 3,169,791

Financial information by segm_8

Financial information by segment, Depreciation, amortization and impairment charges recognized (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Financial information by segment [Abstract]
Depreciation, amortization and impairment charges	$ (310,755)	$ (362,697)	$ (310,960)
Renewable Energy [Member]
Financial information by segment [Abstract]
Depreciation, amortization and impairment charges	(286,907)	(323,538)	(282,376)
Electric Transmission Lines [Member]
Financial information by segment [Abstract]
Depreciation, amortization and impairment charges	(27,490)	(28,925)	(28,584)
Efficient Natural Gas [Member]
Financial information by segment [Abstract]
Depreciation, amortization and impairment charges	3,102	(10,334)	0
Water [Member]
Financial information by segment [Abstract]
Depreciation, amortization and impairment charges	541	100	0
North America [Member]
Financial information by segment [Abstract]
Depreciation, amortization and impairment charges	(116,232)	(166,046)	(123,726)
South America [Member]
Financial information by segment [Abstract]
Depreciation, amortization and impairment charges	(47,844)	(42,368)	(40,880)
EMEA [Member]
Financial information by segment [Abstract]
Depreciation, amortization and impairment charges	$ (146,679)	$ (154,283)	$ (146,354)

Changes in the scope of the c_3

Changes in the scope of the consolidated financial statements, 2019 (Details) $ in Thousands	Aug. 02, 2019USD ($)MW	May 24, 2019USD ($)MW	May 09, 2019USD ($)MW	Dec. 31, 2019USD ($)	Dec. 31, 2018USD ($)	Oct. 22, 2019USD ($)	Nov. 27, 2018	Dec. 31, 2017USD ($)
Changes in the scope of the consolidated financial statements [Abstract]
Investments carried under the equity method				$ 139,925	$ 53,419			$ 55,784
Algonquin [Member]
Changes in the scope of the consolidated financial statements [Abstract]
Percentage interest acquired							16.47%
Asset Acquisition [Member]
Changes in the scope of the consolidated financial statements [Abstract]
Investments carried under the equity method					1
Asset Acquisition [Abstract]
Concessional assets (Note 6)				28,738	155,909
Investments carried under the equity method (Note 7)				113,897
Other non-current assets				25,342
Current assets				1,503	5,646
Deferred tax liabilities (Note 18)				(2,539)	(590)
Other current and non-current liabilities				(1,512)	(3,000)
Non-controlling interests				(92,303)
Asset acquisition - purchase price				(73,126)	(76,604)
Net result of the asset acquisition				0	0
Revenue contributed by the acquisitions				300	1,800
Amount of profit (loss) after tax				500	(300)
Additional revenue amount				2,300	13,300
Additional amount of loss after tax				$ (2,400)	$ (700)
Amherst Island [Member]
Changes in the scope of the consolidated financial statements [Abstract]
Gross capacity | MW		75	75
Investments carried under the equity method		$ 4,900	$ 4,900
Amherst Island [Member] | Algonquin [Member]
Changes in the scope of the consolidated financial statements [Abstract]
Investments carried under the equity method		92,300
Amherst Island [Member] | AYES Canada [Member]
Changes in the scope of the consolidated financial statements [Abstract]
Investments carried under the equity method		$ 97,200
Monterrey [Member]
Changes in the scope of the consolidated financial statements [Abstract]
Gross capacity | MW	142
Investments carried under the equity method	$ 16,600
Percentage interest acquired	30.00%
Total investment	$ 42,000
ASI Ops [Member]
Changes in the scope of the consolidated financial statements [Abstract]
Investments carried under the equity method	$ 6,000
Percentage interest acquired	100.00%
Total investment	$ 6,000
ATN2 [Member]
Changes in the scope of the consolidated financial statements [Abstract]
Investments carried under the equity method						$ 20,000

Changes in the scope of the c_4

Changes in the scope of the consolidated financial statements, 2018 (Details) $ in Thousands	Dec. 28, 2018USD ($)TransmissionLine	Oct. 10, 2018USD ($)	Dec. 31, 2019USD ($)	Dec. 31, 2018USD ($)	Dec. 13, 2018USD ($)	Dec. 11, 2018USD ($)	Feb. 28, 2018USD ($)	Dec. 31, 2017USD ($)
Asset Acquisition [Abstract]
Investments carried under the equity method (Note 7)			$ 139,925	$ 53,419				$ 55,784
Project debt long term (Note 15)			(4,069,909)	(4,826,659)
Project debt short term (Note 15)			(782,439)	(264,455)
Asset Acquisition [Member]
Asset Acquisition [Abstract]
Concessional assets (Note 6)			28,738	155,909
Investments carried under the equity method (Note 7)				1
Current assets			1,503	5,646
Project debt long term (Note 15)				(79,016)
Deferred tax liabilities (Note 18)			(2,539)	(590)
Project debt short term (Note 15)				(2,346)
Other current and non-current liabilities			(1,512)	(3,000)
Asset acquisition - purchase price			(73,126)	(76,604)
Net result of the asset acquisition			0	0
Revenue contributed by the acquisitions			300	1,800
Amount of profit (loss) after tax			500	(300)
Additional revenue amount			2,300	13,300
Additional amount of loss after tax			$ (2,400)	$ (700)
Mini- Hydro [Member]
Changes in the scope of the consolidated financial statements [Abstract]
Percentage interest acquired		5.00%					100.00%
Purchase price							$ 9,327
Pemex Transportation System [Member]
Changes in the scope of the consolidated financial statements [Abstract]
Consideration initial amount will be disbursed as construction progresses		$ 7,000
Chile TL3 [Member]
Changes in the scope of the consolidated financial statements [Abstract]
Purchase price						$ 6,000
Melowind [Member]
Changes in the scope of the consolidated financial statements [Abstract]
Percentage interest acquired					100.00%
Purchase price					$ 45,276
Power Substation [Member]
Changes in the scope of the consolidated financial statements [Abstract]
Purchase price	$ 16,000
Number of transmission lines acquired | TransmissionLine	2

Contracted concessional asset_2

Contracted concessional assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Movements of Contracted Concessional Assets [Abstract]
Contracted concessional financial assets	$ 1,190,527	$ 1,161,441
Total, beginning of period	8,549,181
Total, end of period	8,161,129	8,549,181
Repayment of debt	603,070	385,964	$ 613,242
Cost [Member]
Movements of Contracted Concessional Assets [Abstract]
Total, beginning of period	10,475,828	10,633,769
Additions	1,431	10,463
Application of IFRS 16 - Leases effective January 1, 2018		62,982
Subtractions	(23,186)	(92,814)
Change in the scope of the consolidated financial statements (Note 5)	28,738	170,040
Translation differences	(81,941)	(280,680)
Reclassification and other movements	(16,273)	(27,932)
Total, end of period	10,384,597	10,475,828	10,633,769
Accumulated Amortization [Member]
Movements of Contracted Concessional Assets [Abstract]
Total, beginning of period	(1,926,647)	(1,549,499)
Application of IFRS9 - Expected Credit Losses effective January 1, 2018			(53,048)
Additions	(310,755)	(362,697)
Change in the scope of the consolidated financial statements (Note 5)		(14,131)
Translation differences	15,778	52,728
Reclassification and other movements	(1,844)
Total, end of period	(2,223,468)	(1,926,647)	$ (1,549,499)
Contracted Concessional Assets [Member]
Movements of Contracted Concessional Assets [Abstract]
Contracted concessional financial assets	819,146	843,291
Right-of-use assets	54,000	57,500
Impairment loss on contracted concessional financial assets		$ 0
Mojave [Member]
Movements of Contracted Concessional Assets [Abstract]
Assumed percentage decrease in generation		5.00%
Assumed percentage increase in discount rate		0.50%
Percentage recoverable amount exceeds carrying amount		10.00%
Mojave [Member] | Bottom of Range [Member]
Movements of Contracted Concessional Assets [Abstract]
Discount rate		4.60%
Mojave [Member] | Top of Range [Member]
Movements of Contracted Concessional Assets [Abstract]
Discount rate		5.80%
Solana [Member]
Movements of Contracted Concessional Assets [Abstract]
Repayment of debt	$ 22,200	$ 61,500
Impairment loss on contracted concessional financial assets		42,721
Recoverable amount of impairment loss		$ 1,141,209
Assumed percentage decrease in generation		5.00%
Additional impairment loss that could be recognised due to assumed percentage decrease in generation		$ 72,000
Assumed percentage increase in discount rate		0.50%
Additional impairment loss that could be recognised due to assumed increase in discount rate		$ 50,000
Solana [Member] | Bottom of Range [Member]
Movements of Contracted Concessional Assets [Abstract]
Discount rate		5.00%
Solana [Member] | Top of Range [Member]
Movements of Contracted Concessional Assets [Abstract]
Discount rate		5.80%

Investments carried under the_3

Investments carried under the equity method, Movement of the investments held in associates (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Investments in associates [Abstract]
Initial balance	$ 53,419	$ 55,784
Share of (loss)/profit	7,457	5,231
Dividend distribution	(30,528)	(4,463)
Equity distribution	(6,252)	(122)
Change in the scope of the consolidated financial statements (Note 5)	113,897	0
Others (incl. currency translation differences)	1,932	(3,011)
Final balance	$ 139,925	$ 53,419

Investments carried under the_4

Investments carried under the equity method, Breakdown of stand-alone amounts (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Aug. 02, 2019	May 24, 2019	May 09, 2019
Dividend distribution [Abstract]
Dividend distribution		$ 30,528	$ 4,463
Investments in associates [Abstract]
Non-current assets		8,540,607	8,791,336
Current assets		1,119,208	1,127,695
Non-current liabilities		6,971,601	7,423,780
Current liabilities		973,358	739,139
Revenue		1,011,452	1,043,822	$ 1,008,381
Profit/(loss) for the year		74,608	55,269	(104,887)
Investment under the equity method		139,925	53,419	$ 55,784
Share of profit		7,457	5,231
Amherst Island [Member]
Investments in associates [Abstract]
Investment under the equity method						$ 4,900	$ 4,900
Monterrey [Member]
Investments in associates [Abstract]
Investment under the equity method					$ 16,600
Geida Tlemcen, S.L. [Member]
Dividend distribution [Abstract]
Dividend distribution		4,600
Amherst Island Partnership [Member] | Amherst Island [Member]
Dividend distribution [Abstract]
Dividend distribution		$ 25,900
Arroyo Netherlands II B.V [Member]
Investments in associates [Abstract]
% Shares		30.00%
Associate Companies [Member]
Investments in associates [Abstract]
Investment under the equity method		$ 139,925	$ 53,419
AYES Canada [Member] | Amherst Island [Member]
Investments in associates [Abstract]
Investment under the equity method						$ 97,200
Evacuacion Valdecaballeros, S.L. [Member]
Investments in associates [Abstract]
% Shares		57.16%	57.16%
Non-current assets		$ 18,584	$ 19,679
Current assets		1,268	820
Non-current liabilities		13,145	381
Current liabilities		783	420
Revenue		694	320
Operating profit/(loss)		(277)	(668)
Profit/(loss) for the year		(303)	(693)
Investment under the equity method		$ 2,348	$ 8,773
Evacuacion Valdecaballeros, S.L. [Member] | Bottom of Range [Member]
Investments in associates [Abstract]
Percentage of shareholders required for approval of relevant decisions		75.00%
Myah Bahr Honaine, S.P.A. [Member]
Investments in associates [Abstract]
% Shares	[1]	25.50%	25.50%
Non-current assets	[1]	$ 184,332	$ 186,484
Current assets	[1]	63,148	63,224
Non-current liabilities	[1]	71,614	81,942
Current liabilities	[1]	13,562	13,184
Revenue	[1]	51,504	50,118
Operating profit/(loss)	[1]	33,372	25,778
Profit/(loss) for the year	[1]	30,186	22,193
Investment under the equity method	[1]	$ 45,222	43,161
Myah Bahr Honaine, S.P.A. [Member] | Geida Tlemcen, S.L. [Member]
Investments in associates [Abstract]
% Shares		51.00%
Share of profit		$ 7,697	$ 5,659
Pectonex, R.F. Proprietary Limited [Member]
Investments in associates [Abstract]
% Shares		50.00%	50.00%
Non-current assets		$ 3,074	$ 3,186
Current assets		0	0
Non-current liabilities		0	0
Current liabilities		2	2
Revenue		0	0
Operating profit/(loss)		(190)	(209)
Profit/(loss) for the year		(190)	(209)
Investment under the equity method		$ 1,391	$ 1,485
Evacuacion Villanueva del Rey, S.L [Member]
Investments in associates [Abstract]
% Shares		40.02%	40.02%
Non-current assets		$ 2,946	$ 3,190
Current assets		107	257
Non-current liabilities		1,841	2,021
Current liabilities		225	383
Revenue		0	0
Operating profit/(loss)		47	44
Profit/(loss) for the year		0	0
Investment under the equity method		$ 0	$ 0
Ca Ku A1, S.A.P.I de CV (PTS) [Member]
Investments in associates [Abstract]
% Shares		5.00%	5.00%
Non-current assets		$ 486,179	$ 284,375
Current assets		55,423	10,951
Non-current liabilities		0	0
Current liabilities		543,077	295,865
Revenue		0	0
Operating profit/(loss)		(39)	3
Profit/(loss) for the year		(495)	(624)
Investment under the equity method		$ 0	$ 0
Pemcorp SAPI de CV [Member]
Investments in associates [Abstract]
% Shares	[2]	30.00%
Non-current assets	[2]	$ 125,301
Current assets	[2]	72,669
Non-current liabilities	[2]	197,324
Current liabilities	[2]	5,090
Revenue	[2]	32,302
Operating profit/(loss)	[2]	5,737
Profit/(loss) for the year	[2]	(10,073)
Investment under the equity method	[2]	$ 17,179
Pemcorp SAPI de CV [Member] | Arroyo Netherlands II B.V [Member]
Investments in associates [Abstract]
Ownership interest		100.00%
Share of profit		$ 521
ABY Infraestructuras S.L.U. [Member]
Investments in associates [Abstract]
% Shares		20.00%
Non-current assets		$ 0
Current assets		59
Non-current liabilities		0
Current liabilities		0
Revenue		0
Operating profit/(loss)		(104)
Profit/(loss) for the year		(101)
Investment under the equity method		$ 11
Windlectric Inc. [Member]
Investments in associates [Abstract]
% Shares	[3]	30.00%
Non-current assets	[3]	$ 319,041
Current assets	[3]	10,655
Non-current liabilities	[3]	232,938
Current liabilities	[3]	22,424
Revenue	[3]	24,867
Operating profit/(loss)	[3]	11,125
Profit/(loss) for the year	[3]	(6,537)
Investment under the equity method	[3]	$ 73,693
Windlectric Inc. [Member] | Amherst Island Partnership [Member]
Investments in associates [Abstract]
Ownership interest		100.00%
Other Renewable Energy Joint Ventures [Member]
Investments in associates [Abstract]
% Shares	[4]	50.00%
Non-current assets	[4]	$ 47
Current assets	[4]	146
Non-current liabilities	[4]	6
Current liabilities	[4]	70
Revenue	[4]	0
Operating profit/(loss)	[4]	(46)
Profit/(loss) for the year	[4]	(46)
Investment under the equity method	[4]	$ 81
[1]	Myah Bahr Honaine, S.P.A., the project entity, is 51% owned by Geida Tlemcen, S.L. which is accounted for using the equity method in these consolidated financial statements. Share of profit of Myah Bahr Honaine S.P.A. included in these consolidated financial statements amounts to $7,697 thousand in 2019 and $5,659 thousand in 2018.
[2]	Pemcorp SAPI de CV, Monterrey's project entity, is 100% owned by Arroyo Netherlands II B.V. which is accounted for under the equity method in these consolidated financial statements (Note 5). Arroyo Netherlands II B.V. is 30% owned by Atlantica. Share of profit of Pemcorp SAPI de CV included in these consolidated financial statements amounts to $521 thousand in 2019.
[3]	Windlectric Inc., the project entity, is owned 100% by Amherst Island Partnership which is accounted for under the equity method (Note 5).
[4]	Other renewable energy joint ventures correspond to investments made in the following entities located in Colombia: AC Renovables Sol 1 SAS Esp, PA Renovables Sol 1 SAS Esp, SJ Renovables Sun 1 SAS Esp and SJ Renovables Wind 1 SAS Esp.

Financial instruments by cate_3

Financial instruments by category, Reconciliation to statement of financial position (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)mi	Dec. 31, 2018USD ($)
Financial Assets [Abstract]
Total financial assets	$ 1,190,527	$ 1,161,441
Financial Liabilities [Abstract]
Total financial liabilities	6,020,060	6,280,047
Corporate Debt [Member]
Financial Liabilities [Abstract]
Total financial liabilities	723,791	684,073
Project Debt [Member]
Financial Liabilities [Abstract]
Total financial liabilities	4,852,348	5,091,114
Related Parties - Non-current [Member]
Financial Liabilities [Abstract]
Total financial liabilities	17,115	33,675
Trade and Other Current Liabilities [Member]
Financial Liabilities [Abstract]
Total financial liabilities	128,062	192,033
Derivative Liabilities [Member]
Financial Liabilities [Abstract]
Total financial liabilities	298,744	279,152
Derivative Liabilities [Member]
Financial Assets [Abstract]
Total financial assets	5,230	13,153
Investment in Ten West Link [Member]
Financial Assets [Abstract]
Total financial assets	$ 9,874	6,034
Percentage interest acquired	12.50%
Length of transmission lines | mi	114
Investment in Rioglass [Member]
Financial Assets [Abstract]
Total financial assets	$ 7,000
Percentage interest acquired	15.12%
Other Financial Investments [Member]
Financial Assets [Abstract]
Total financial assets	$ 288,060	274,318
Contracted concessional financial assets	160,600	159,100
Trade and Other Receivables [Member]
Financial Assets [Abstract]
Total financial assets	317,568	236,395
Cash and Cash Equivalents [Member]
Financial Assets [Abstract]
Total financial assets	562,795	631,542
Amortized Cost [Member]
Financial Liabilities [Abstract]
Total financial liabilities	5,721,316	6,000,895
Amortized Cost [Member] | Corporate Debt [Member]
Financial Liabilities [Abstract]
Total financial liabilities	723,791	684,073
Amortized Cost [Member] | Project Debt [Member]
Financial Liabilities [Abstract]
Total financial liabilities	4,852,348	5,091,114
Amortized Cost [Member] | Related Parties - Non-current [Member]
Financial Liabilities [Abstract]
Total financial liabilities	17,115	33,675
Amortized Cost [Member] | Trade and Other Current Liabilities [Member]
Financial Liabilities [Abstract]
Total financial liabilities	128,062	192,033
Amortized Cost [Member] | Derivative Liabilities [Member]
Financial Liabilities [Abstract]
Total financial liabilities	0	0
Fair Value Through Profit or Loss [Member]
Financial Liabilities [Abstract]
Total financial liabilities	298,744	279,152
Fair Value Through Profit or Loss [Member] | Corporate Debt [Member]
Financial Liabilities [Abstract]
Total financial liabilities	0	0
Fair Value Through Profit or Loss [Member] | Project Debt [Member]
Financial Liabilities [Abstract]
Total financial liabilities	0	0
Fair Value Through Profit or Loss [Member] | Related Parties - Non-current [Member]
Financial Liabilities [Abstract]
Total financial liabilities	0	0
Fair Value Through Profit or Loss [Member] | Trade and Other Current Liabilities [Member]
Financial Liabilities [Abstract]
Total financial liabilities	0	0
Fair Value Through Profit or Loss [Member] | Derivative Liabilities [Member]
Financial Liabilities [Abstract]
Total financial liabilities	298,744	279,152
Amortized Cost [Member]
Financial Assets [Abstract]
Total financial assets	1,168,423	1,142,255
Amortized Cost [Member] | Derivative Liabilities [Member]
Financial Assets [Abstract]
Total financial assets	0	0
Amortized Cost [Member] | Investment in Ten West Link [Member]
Financial Assets [Abstract]
Total financial assets	0	0
Amortized Cost [Member] | Investment in Rioglass [Member]
Financial Assets [Abstract]
Total financial assets	0
Amortized Cost [Member] | Other Financial Investments [Member]
Financial Assets [Abstract]
Total financial assets	288,060	274,318
Amortized Cost [Member] | Trade and Other Receivables [Member]
Financial Assets [Abstract]
Total financial assets	317,568	236,395
Amortized Cost [Member] | Cash and Cash Equivalents [Member]
Financial Assets [Abstract]
Total financial assets	562,795	631,542
Fair Value Through Other Comprehensive Income [Member]
Financial Assets [Abstract]
Total financial assets	9,874	6,034
Fair Value Through Other Comprehensive Income [Member] | Derivative Liabilities [Member]
Financial Assets [Abstract]
Total financial assets	0	0
Fair Value Through Other Comprehensive Income [Member] | Investment in Ten West Link [Member]
Financial Assets [Abstract]
Total financial assets	9,874	6,034
Fair Value Through Other Comprehensive Income [Member] | Investment in Rioglass [Member]
Financial Assets [Abstract]
Total financial assets	0
Fair Value Through Other Comprehensive Income [Member] | Other Financial Investments [Member]
Financial Assets [Abstract]
Total financial assets	0	0
Fair Value Through Other Comprehensive Income [Member] | Trade and Other Receivables [Member]
Financial Assets [Abstract]
Total financial assets	0	0
Fair Value Through Other Comprehensive Income [Member] | Cash and Cash Equivalents [Member]
Financial Assets [Abstract]
Total financial assets	0	0
Fair Value Through Profit or Loss [Member]
Financial Assets [Abstract]
Total financial assets	12,230	13,153
Fair Value Through Profit or Loss [Member] | Derivative Liabilities [Member]
Financial Assets [Abstract]
Total financial assets	5,230	13,153
Fair Value Through Profit or Loss [Member] | Investment in Ten West Link [Member]
Financial Assets [Abstract]
Total financial assets	0	0
Fair Value Through Profit or Loss [Member] | Investment in Rioglass [Member]
Financial Assets [Abstract]
Total financial assets	7,000
Fair Value Through Profit or Loss [Member] | Other Financial Investments [Member]
Financial Assets [Abstract]
Total financial assets	0	0
Fair Value Through Profit or Loss [Member] | Trade and Other Receivables [Member]
Financial Assets [Abstract]
Total financial assets	0	0
Fair Value Through Profit or Loss [Member] | Cash and Cash Equivalents [Member]
Financial Assets [Abstract]
Total financial assets	$ 0	$ 0

Derivative financial instrume_3

Derivative financial instruments, Breakdown of fair value amounts (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Cash Flow Hedge [Member]
Breakdown of fair value amount of derivative financial instruments [Abstract]
Assets	$ 5,230	$ 13,153
Liabilities	$ 298,744	279,152
Interest Rate Derivatives [Member] | Euros [Member]
Breakdown of fair value amount of derivative financial instruments [Abstract]
Percent of notional amount of debt hedged in next 12 months	100.00%
Percentage of notional amount of debt hedged in year two	75.00%
Interest Rate Derivatives [Member] | Cash Flow Hedge [Member]
Breakdown of fair value amount of derivative financial instruments [Abstract]
Assets	$ 1,619	9,923
Liabilities	298,744	279,152
Foreign Exchange Derivative Instruments [Member] | Cash Flow Hedge [Member]
Breakdown of fair value amount of derivative financial instruments [Abstract]
Assets	3,610	3,230
Liabilities	$ 0	$ 0

Derivative financial instrume_4

Derivative financial instruments, Breakdown of maturities of notional and fair value amounts (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Breakdown of Maturities of Notional and Fair Value Amounts [Abstract]
Loss on cash flow hedges	$ 55,765	$ 67,519	$ 70,953
Cap [Member]
Breakdown of Maturities of Notional and Fair Value Amounts [Abstract]
Notionals	593,715	672,997
Fair value	$ 1,619	$ 9,923
Cap [Member] | Up to 1 Year [Member]
Breakdown of Maturities of Notional and Fair Value Amounts [Abstract]
Notionals	43,266	42,846
Fair value	$ 118	$ 493
Cap [Member] | Between 1 and 2 Years [Member]
Breakdown of Maturities of Notional and Fair Value Amounts [Abstract]
Notionals	45,955	45,603
Fair value	$ 128	$ 524
Cap [Member] | Between 2 and 3 Years [Member]
Breakdown of Maturities of Notional and Fair Value Amounts [Abstract]
Notionals	49,259	48,774
Fair value	$ 140	$ 562
Cap [Member] | Subsequent Years [Member]
Breakdown of Maturities of Notional and Fair Value Amounts [Abstract]
Notionals	455,235	535,774
Fair value	$ 1,234	$ 8,344
Swap [Member]
Breakdown of Maturities of Notional and Fair Value Amounts [Abstract]
Notionals	2,180,085	2,305,641
Fair value	$ (298,744)	$ (279,152)
Swap [Member] | Up to 1 Year [Member]
Breakdown of Maturities of Notional and Fair Value Amounts [Abstract]
Notionals	117,574	93,440
Fair value	$ (18,721)	$ (11,848)
Swap [Member] | Between 1 and 2 Years [Member]
Breakdown of Maturities of Notional and Fair Value Amounts [Abstract]
Notionals	124,908	119,568
Fair value	$ (19,787)	$ (13,231)
Swap [Member] | Between 2 and 3 Years [Member]
Breakdown of Maturities of Notional and Fair Value Amounts [Abstract]
Notionals	240,570	234,572
Fair value	$ (21,802)	$ (15,151)
Swap [Member] | Subsequent Years [Member]
Breakdown of Maturities of Notional and Fair Value Amounts [Abstract]
Notionals	1,697,033	1,858,061
Fair value	$ (238,434)	$ (238,922)
Interest Rate Derivatives [Member] | Euros [Member]
Breakdown of Maturities of Notional and Fair Value Amounts [Abstract]
Maturity date	2030
Interest Rate Derivatives [Member] | Euros [Member] | Bottom of Range [Member]
Breakdown of Maturities of Notional and Fair Value Amounts [Abstract]
Percentage of notional amount of project debt hedged	81.00%
Average guaranteed interest rates	0.89%
Interest Rate Derivatives [Member] | Euros [Member] | Top of Range [Member]
Breakdown of Maturities of Notional and Fair Value Amounts [Abstract]
Percentage of notional amount of project debt hedged	100.00%
Average guaranteed interest rates	4.87%
Interest Rate Derivatives [Member] | U.S. Dollars [Member]
Breakdown of Maturities of Notional and Fair Value Amounts [Abstract]
Maturity date	2034
Interest Rate Derivatives [Member] | U.S. Dollars [Member] | Bottom of Range [Member]
Breakdown of Maturities of Notional and Fair Value Amounts [Abstract]
Percentage of notional amount of project debt hedged	70.00%
Average guaranteed interest rates	1.98%
Interest Rate Derivatives [Member] | U.S. Dollars [Member] | Top of Range [Member]
Breakdown of Maturities of Notional and Fair Value Amounts [Abstract]
Percentage of notional amount of project debt hedged	100.00%
Average guaranteed interest rates	5.27%
Interest Rate Derivatives [Member] | Cash Flow Hedge [Member]
Breakdown of Maturities of Notional and Fair Value Amounts [Abstract]
Loss on cash flow hedges	$ (55,765)	(67,519)	(70,953)
Gain (loss) on net amount of time value component	157	(560)	$ (860)
After-tax result accumulated in equity	$ 73,797	$ 95,011

Related parties (Details)

Related parties (Details) - USD ($) $ in Thousands	May 31, 2019	May 22, 2019	Feb. 24, 2017	Nov. 30, 2017	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Nov. 27, 2018
Details of Balances [Abstract]
Total non-current payables with related parties					$ 17,115	$ 33,675
Transactions With Related Party [Abstract]
Financial income					4,121	36,444	$ 1,007
Financial expenses					(407,990)	(425,019)	(463,717)
Compensation received in lieu of dividends			$ 10,400
Kaxu, Solaben 2&3 and Solacor 1&2 [Member]
Details of Balances [Abstract]
Total non-current payables with related parties					$ 35,600	53,000
Algonquin [Member]
Non-controlling ownership interest [Abstract]
Additional ownership interests acquired								16.47%
Ownership interest	44.20%	42.27%		25.00%	44.20%
Details of Balances [Abstract]
Total current payables with related parties					$ 5,400
Amherst Island Partnership [Member]
Transactions With Related Party [Abstract]
Compensation received in lieu of dividends					5,500
Arroyo Netherlands II B.V [Member]
Details of Balances [Abstract]
Total current receivables with related parties					5,000
Related Parties [Member]
Details of Balances [Abstract]
Total current receivables with related parties					13,350	5,328
Total non-current receivables with related parties					21,355	0
Total current payables with related parties					23,979	19,352
Total non-current payables with related parties					17,115	33,675
Subsidiaries [Member]
Transactions With Related Party [Abstract]
Services rendered					0	0	3,495
Services received					0	(101,582)	(114,416)
Financial income					978	3,721	74
Financial expenses					(195)	(398)	$ (1,154)
Board of Directors and CEO [Member]
Transactions With Related Party [Abstract]
Remuneraton received					2,500	3,100
Annual bonus					1,000	1,000
CEO [Member]
Transactions With Related Party [Abstract]
Long term award					$ 0	$ 800

Trade and other receivables (De

Trade and other receivables (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Trade and other receivables [Abstract]
Trade receivables	$ 242,008	$ 163,856
Tax receivables	50,901	54,959
Prepayments	5,150	5,521
Other accounts receivable	19,508	12,059
Trade and other receivables	317,568	236,395
Euros [Member]
Trade and other receivables [Abstract]
Trade receivables	108,280	91,303
South African Rand [Member]
Trade and other receivables [Abstract]
Trade receivables	24,289	25,193
Other [Member]
Trade and other receivables [Abstract]
Trade receivables	4,001	9,884
All Foreign Currencies [Member]
Trade and other receivables [Abstract]
Trade receivables	$ 136,570	$ 126,380

Cash and cash equivalents (Deta

Cash and cash equivalents (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Cash and cash equivalents [abstract]
Cash at bank and on hand - non restricted	$ 223,867	$ 335,114
Cash at bank and on hand - restricted	338,928	296,428
Cash and cash equivalents	562,795	631,542	$ 669,387	$ 594,811
U.S. Dollar [Member]
Cash and cash equivalents [abstract]
Cash and cash equivalents	313,678	328,716
Euro [Member]
Cash and cash equivalents [abstract]
Cash and cash equivalents	181,961	228,036
Algerian Dinar [Member]
Cash and cash equivalents [abstract]
Cash and cash equivalents	9,301	11,602
South African Rand [Member]
Cash and cash equivalents [abstract]
Cash and cash equivalents	47,679	55,257
Others [Member]
Cash and cash equivalents [abstract]
Cash and cash equivalents	$ 10,176	$ 7,931

Equity (Details)

Equity (Details)

Dec. 13, 2019USD ($)

Nov. 05, 2019$ / shares

Sep. 13, 2019USD ($)

Aug. 02, 2019$ / shares

Jun. 14, 2019USD ($)

May 31, 2019shares

May 22, 2019USD ($)shares

May 07, 2019$ / shares

Mar. 22, 2019USD ($)

Feb. 26, 2019$ / shares

Nov. 30, 2017

Dec. 31, 2019USD ($)Vote$ / sharesshares

Dec. 31, 2018USD ($)

Equity [Abstract]

Share capital

$ 10,160,000

$ 10,022,000

Shares outstanding (in shares) | shares

101,601,666

Nominal value per share (in dollars per share) | $ / shares

$ 0.10

Voting right per share | Vote

1

Treasury shares held (in shares) | shares

0

Increase (decrease) in treasury shares (in shares) | shares

0

Fourth Quarter [Member]

Equity [Abstract]

Dividend declaration date

Feb. 26, 2019

Dividend paid date

Mar. 22, 2019

Dividend declared and paid (in dollars per share) | $ / shares

$ 0.37

Dividends paid

$ 37,100,000

First Quarter [Member]

Equity [Abstract]

Dividend declaration date

May 7, 2019

Dividend paid date

Jun. 14, 2019

Dividend declared and paid (in dollars per share) | $ / shares

$ 0.39

Dividends paid

$ 39,600,000

Second Quarter [Member]

Equity [Abstract]

Dividend declaration date

Aug. 2, 2019

Dividend paid date

Sep. 13, 2019

Dividend declared and paid (in dollars per share) | $ / shares

$ 0.40

Dividends paid

$ 40,600,000

Third Quarter [Member]

Equity [Abstract]

Dividend declaration date

Nov. 5, 2019

Dividend paid date

Dec. 13, 2019

Dividend declared and paid (in dollars per share) | $ / shares

$ 0.41

Dividends paid

$ 41,700,000

Abengoa [Member]

Equity [Abstract]

Ownership interest

41.47%

Algonquin [Member]

Equity [Abstract]

Share capital

$ 30,000,000

Shares outstanding (in shares) | shares

2,000,000

1,384,402

Ownership interest

44.20%

42.27%

25.00%

44.20%

Corporate debt, Breakdown of co

Corporate debt, Breakdown of corporate debt (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Corporate debt [Abstract]
Total Non-current	$ 695,085	$ 415,168
Total Current	28,706	268,905
Credit Facilities with Financial Entities [Member]
Corporate debt [Abstract]
Total Non-current	695,085	415,168
Total Current	789	11,580
Notes and Bonds [Member]
Corporate debt [Abstract]
Total Current	$ 27,917	$ 257,325

Corporate debt, Details of corp

Corporate debt, Details of corporate debt (Details) € in Millions

Oct. 08, 2019USD ($)

Feb. 10, 2017EUR (€)Swap

Apr. 30, 2019EUR (€)

Dec. 31, 2019USD ($)

Dec. 31, 2018USD ($)

Dec. 31, 2017USD ($)

Dec. 13, 2019

Aug. 02, 2019USD ($)

Jan. 31, 2019USD ($)

May 10, 2018USD ($)

Jul. 20, 2017USD ($)

Jul. 20, 2017EUR (€)

Nov. 17, 2014USD ($)

Corporate debt [Abstract]

Amount drawn

$ 358,826,000

$ 123,767,000

$ 296,398,000

2019 Notes [Member]

Corporate debt [Abstract]

Principal amount

$ 255,000,000

Fixed interest rate

7.00%

Eurodollar Rate Loans [Member] | LIBOR [Member] | Bottom of Range [Member]

Corporate debt [Abstract]

Adjustment to interest rate

1.60%

Eurodollar Rate Loans [Member] | LIBOR [Member] | Top of Range [Member]

Corporate debt [Abstract]

Adjustment to interest rate

2.25%

Base Rate Loans [Member]

Corporate debt [Abstract]

Adjustment to interest rate

1.00%

Base Rate Loans [Member] | Bottom of Range [Member]

Corporate debt [Abstract]

Adjustment to interest rate

0.60%

Base Rate Loans [Member] | Top of Range [Member]

Corporate debt [Abstract]

Adjustment to interest rate

1.00%

Base Rate Loans [Member] | Federal Funds Rate [Member]

Corporate debt [Abstract]

Adjustment to interest rate

0.50%

Note Issuance Facility [Member]

Corporate debt [Abstract]

Principal amount | €

€ 275

Fixed interest rate

5.50%

Number of interest rate swaps | Swap

2

Note Issuance Facility [Member] | EURIBOR [Member]

Corporate debt [Abstract]

Adjustment to interest rate

4.90%

Series 1 Notes [Member]

Corporate debt [Abstract]

Maturity date

2022

Series 2 Notes [Member]

Corporate debt [Abstract]

Maturity date

2023

Series 3 Notes [Member]

Corporate debt [Abstract]

Maturity date

2024

2017 Credit Facility [Member]

Corporate debt [Abstract]

Principal amount

$ 11,200,000

Maturity date

December 13, 2021

Amount drawn

$ 10,100,000

2017 Credit Facility [Member] | Top of Range [Member]

Corporate debt [Abstract]

Principal amount | €

€ 10

2017 Credit Facility [Member] | EURIBOR [Member]

Corporate debt [Abstract]

Adjustment to interest rate

2.00%

2.25%

2.25%

2017 Credit Facility [Member] | LIBOR [Member]

Corporate debt [Abstract]

Adjustment to interest rate

2.00%

2.25%

2.25%

New Revolving Credit Facility [Member]

Corporate debt [Abstract]

Credit facility amount

$ 425,000,000

$ 300,000

$ 215,000

Potential increase in borrowings capacity

$ 70,000

Amount drawn

$ 81,100

New Revolving Credit Facility [Member] | Maturity December 31, 2022 [Member]

Corporate debt [Abstract]

Maturity date

December 31, 2022

Credit facility amount

387,500,000

New Revolving Credit Facility [Member] | Maturity December 31, 2021 [Member]

Corporate debt [Abstract]

Maturity date

December 31, 2021

Credit facility amount

$ 37,500,000

2019 Note Issuance Facility [Member]

Corporate debt [Abstract]

Maturity date

April 30, 2025

Credit facility amount | €

€ 268

Upfront fee percentage

2.00%

Interest capitalization period

2 years

2019 Note Issuance Facility [Member] | Interest Rate Swap [Member]

Corporate debt [Abstract]

Fixed interest rate

4.20%

Maturity date

June 30, 2022

2019 Note Issuance Facility [Member] | EURIBOR [Member]

Corporate debt [Abstract]

Adjustment to interest rate

4.50%

Variable interest period

3 months

Commercial Paper [Member]

Corporate debt [Abstract]

Short term notes authorized amount

$ 50,000,000

Tenor of short term notes

2 years

Short term notes issued amount

$ 25,000,000

Percentage average cost of issued short term notes

0.66%

Corporate debt, Repayment sched

Corporate debt, Repayment schedule (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Repayment schedule [Abstract]
Corporate debt	$ 723,791	$ 684,073
2020 [Member]
Repayment schedule [Abstract]
Corporate debt	28,706
2021 [Member]
Repayment schedule [Abstract]
Corporate debt	18,023
2022 [Member]
Repayment schedule [Abstract]
Corporate debt	182,481
2023 [Member]
Repayment schedule [Abstract]
Corporate debt	100,513
2024 [Member]
Repayment schedule [Abstract]
Corporate debt	100,413
Subsequent Years [Member]
Repayment schedule [Abstract]
Corporate debt	293,655	$ 102,350
New Revolving Credit Facility [Member]
Repayment schedule [Abstract]
Corporate debt	81,865
New Revolving Credit Facility [Member] | 2020 [Member]
Repayment schedule [Abstract]
Corporate debt	701
New Revolving Credit Facility [Member] | 2021 [Member]
Repayment schedule [Abstract]
Corporate debt	0
New Revolving Credit Facility [Member] | 2022 [Member]
Repayment schedule [Abstract]
Corporate debt	81,164
New Revolving Credit Facility [Member] | 2023 [Member]
Repayment schedule [Abstract]
Corporate debt	0
New Revolving Credit Facility [Member] | 2024 [Member]
Repayment schedule [Abstract]
Corporate debt	0
New Revolving Credit Facility [Member] | Subsequent Years [Member]
Repayment schedule [Abstract]
Corporate debt	0
Note Issuance Facility [Member]
Repayment schedule [Abstract]
Corporate debt	302,327
Note Issuance Facility [Member] | 2020 [Member]
Repayment schedule [Abstract]
Corporate debt	84
Note Issuance Facility [Member] | 2021 [Member]
Repayment schedule [Abstract]
Corporate debt	0
Note Issuance Facility [Member] | 2022 [Member]
Repayment schedule [Abstract]
Corporate debt	101,317
Note Issuance Facility [Member] | 2023 [Member]
Repayment schedule [Abstract]
Corporate debt	100,513
Note Issuance Facility [Member] | 2024 [Member]
Repayment schedule [Abstract]
Corporate debt	100,413
Note Issuance Facility [Member] | Subsequent Years [Member]
Repayment schedule [Abstract]
Corporate debt	0
2017 Credit Facility [Member]
Repayment schedule [Abstract]
Corporate debt	10,089
2017 Credit Facility [Member] | 2020 [Member]
Repayment schedule [Abstract]
Corporate debt	4
2017 Credit Facility [Member] | 2021 [Member]
Repayment schedule [Abstract]
Corporate debt	10,085
2017 Credit Facility [Member] | 2022 [Member]
Repayment schedule [Abstract]
Corporate debt	0
2017 Credit Facility [Member] | 2023 [Member]
Repayment schedule [Abstract]
Corporate debt	0
2017 Credit Facility [Member] | 2024 [Member]
Repayment schedule [Abstract]
Corporate debt	0
2017 Credit Facility [Member] | Subsequent Years [Member]
Repayment schedule [Abstract]
Corporate debt	0
2019 Note Issuance Facility [Member]
Repayment schedule [Abstract]
Corporate debt	301,593
2019 Note Issuance Facility [Member] | 2020 [Member]
Repayment schedule [Abstract]
Corporate debt	0
2019 Note Issuance Facility [Member] | 2021 [Member]
Repayment schedule [Abstract]
Corporate debt	7,938
2019 Note Issuance Facility [Member] | 2022 [Member]
Repayment schedule [Abstract]
Corporate debt	0
2019 Note Issuance Facility [Member] | 2023 [Member]
Repayment schedule [Abstract]
Corporate debt	0
2019 Note Issuance Facility [Member] | 2024 [Member]
Repayment schedule [Abstract]
Corporate debt	0
2019 Note Issuance Facility [Member] | Subsequent Years [Member]
Repayment schedule [Abstract]
Corporate debt	293,655
Commercial Paper [Member]
Repayment schedule [Abstract]
Corporate debt	27,917
Commercial Paper [Member] | 2020 [Member]
Repayment schedule [Abstract]
Corporate debt	27,917
Commercial Paper [Member] | 2021 [Member]
Repayment schedule [Abstract]
Corporate debt	0
Commercial Paper [Member] | 2022 [Member]
Repayment schedule [Abstract]
Corporate debt	0
Commercial Paper [Member] | 2023 [Member]
Repayment schedule [Abstract]
Corporate debt	0
Commercial Paper [Member] | 2024 [Member]
Repayment schedule [Abstract]
Corporate debt	0
Commercial Paper [Member] | Subsequent Years [Member]
Repayment schedule [Abstract]
Corporate debt	$ 0

Corporate debt, Movement in cor

Corporate debt, Movement in corporate debt, split between cash and non-cash items (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)
Corporate debt [Abstract]
Beginning balance	$ 684,073
Cash flow	6,620
Non-cash changes	33,098
Ending balance	$ 723,791

Project debt, Variations of pro

Project debt, Variations of project debt (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Jun. 30, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Project debt [Abstract]
Cash held to satisfy non-recourse debt agreements		$ 339,000	$ 296,000
Total Project Debt [Abstract]
Beginning balance		5,091,114	5,475,208
Increases		333,226	393,007
Decreases		(535,418)	(620,767)
Debt refinancing IFRS 9 impact	$ (36,600)
Changes in the scope of the consolidated financial statements			81,362
Currency translation differences		(36,574)	(162,455)
Reclassifications		0	0
Ending balance		4,852,348	5,091,114	$ 5,475,208
Main variations [Abstract]
Repayment of debt		603,070	385,964	613,242
IFRS 9 Adjustment [Member]
Total Project Debt [Abstract]
First time application of IFRS 9 effective January 1, 2018			(39,599)
Debt refinancing IFRS 9 impact			(36,642)
Project Debt - Long-term [member]
Total Project Debt [Abstract]
Beginning balance		4,826,659	5,228,917
Increases		53,222	105,466
Decreases		(19,272)	(98,450)
Changes in the scope of the consolidated financial statements			79,016
Currency translation differences		(33,718)	(150,019)
Reclassifications		(756,981)	(262,030)
Ending balance		4,069,909	4,826,659	5,228,917
Project Debt - Long-term [member] | IFRS 9 Adjustment [Member]
Total Project Debt [Abstract]
First time application of IFRS 9 effective January 1, 2018			(39,599)
Debt refinancing IFRS 9 impact			(36,642)
Project Debt - Short-term [Member]
Total Project Debt [Abstract]
Beginning balance		264,455	246,291
Increases		280,005	288,541
Decreases		(516,147)	(522,317)
Changes in the scope of the consolidated financial statements			2,346
Currency translation differences		(2,855)	(12,436)
Reclassifications		756,981	262,030
Ending balance		782,439	264,455	$ 246,291
Project Debt - Short-term [Member] | IFRS 9 Adjustment [Member]
Total Project Debt [Abstract]
First time application of IFRS 9 effective January 1, 2018			0
Debt refinancing IFRS 9 impact			0
Solana [Member]
Main variations [Abstract]
Repayment of debt		$ 22,200	$ 61,500

Project debt, Repayment schedul

Project debt, Repayment schedule (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Repayment schedule [Abstract]
Project debt	$ 4,852,348	$ 5,091,114	$ 5,475,208
2020 [Member]
Repayment schedule [Abstract]
Interest repayment	12,799
Nominal repayment	256,620
2021 [Member]
Repayment schedule [Abstract]
Project debt	262,787
2022 [Member]
Repayment schedule [Abstract]
Project debt	293,642
2023 [Member]
Repayment schedule [Abstract]
Project debt	319,962
2024 [Member]
Repayment schedule [Abstract]
Project debt	335,067
Subsequent Years [Member]
Repayment schedule [Abstract]
Project debt	$ 3,371,724

Project debt, Movement in proje

Project debt, Movement in project debt, split between cash and non-cash items (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)
Project debt [Abstract]
Beginning balance	$ 5,091,114
Cash flow	(531,726)
Non-cash changes	292,960
Ending balance	$ 4,852,348

Project debt, Movement in pro_2

Project debt, Movement in project debt and Significant foreign currency denominated debts (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Project Debt [Abstract]
Project debt	$ 4,852,348	$ 5,091,114	$ 5,475,208
Euro [Member]
Project Debt [Abstract]
Project debt	1,882,618	2,049,892
Algerian Dinar [Member]
Project Debt [Abstract]
Project debt	24,331	29,545
South African Rand [Member]
Project Debt [Abstract]
Project debt	384,313	384,915
All Foreign Currencies [Member]
Project Debt [Abstract]
Project debt	$ 2,291,262	$ 2,464,352

Grants and other liabilities (D

Grants and other liabilities (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)Type	Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)	Oct. 02, 2013USD ($)
Grants and other liabilities [Abstract]
Grants	$ 1,087,553	$ 1,150,805
Other liabilities	554,199	507,321
Grant and other non-current liabilities	$ 1,641,752	1,658,126
Number of grant types | Type	2
Income from grants	$ 59,142	59,421	$ 59,707
Finance lease liabilities	87,900	92,000
Solana and Mojave [Member]
Grants and other liabilities [Abstract]
Income from grants	59,000	59,300
U.S. Department of Treasury [Member]
Grants and other liabilities [Abstract]
Grants	707,000	739,000
Federal Financing Bank [Member]
Grants and other liabilities [Abstract]
Grants	379,000	410,000
Liberty Interactive Corporation [Member]
Grants and other liabilities [Abstract]
Grant and other non-current liabilities	380,000	358,000
Class A membership investment				$ 300,000
Finance lease liabilities	54,000	57,000
Dismantling provision	$ 60,000	$ 57,000

Trade payables and other curr_3

Trade payables and other current liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Trade payables and other current liabilities [Abstract]
Trade accounts payables	$ 52,062	$ 109,430
Down payments from clients	565	6,289
Liberty	41,032	37,119
Other accounts payable	34,403	39,195
Total	$ 128,062	$ 192,033

Income Tax, Analysis of deferre

Income Tax, Analysis of deferred tax assets and liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Deferred Tax Assets and Liabilities [Abstract]
Deferred tax assets	$ 147,966	$ 136,066	$ 165,136
Deferred tax liabilities	248,996	211,000	$ 186,583
Net Tax Credits For Tax Losses Carryforwards [Member]
Deferred Tax Assets and Liabilities [Abstract]
Deferred tax assets	61,693	55,835
Temporary Differences on Derivatives Financial Instruments [Member]
Deferred Tax Assets and Liabilities [Abstract]
Deferred tax assets	86,096	79,865
Temporary Differences on Derivatives Financial Instruments [Member] | Solar Plants in Spain [Member]
Deferred Tax Assets and Liabilities [Abstract]
Deferred tax assets	61,000
Temporary Differences on Derivatives Financial Instruments [Member] | ACT [Member]
Deferred Tax Assets and Liabilities [Abstract]
Deferred tax assets	17,000
Temporary Differences Tax/Book Amortization [Member]
Deferred Tax Assets and Liabilities [Abstract]
Deferred tax liabilities	145,166	126,792
Other Temporary Differences Tax/Book Value of Contracted Concessional Assets [Member]
Deferred Tax Assets and Liabilities [Abstract]
Deferred tax liabilities	83,481	73,793
Other Temporary Differences [Member]
Deferred Tax Assets and Liabilities [Abstract]
Deferred tax assets	177	366
Deferred tax liabilities	20,349	10,415
Temporary Difference for Accelerated Tax Amortization [Member] | Solar Plants in Spain [Member]
Deferred Tax Assets and Liabilities [Abstract]
Deferred tax liabilities	100,000	74,000
Temporary Difference for Accelerated Tax Amortization [Member] | Solana and Mojave [Member]
Deferred Tax Assets and Liabilities [Abstract]
Deferred tax liabilities	$ 45,000	$ 55,000

Income Tax, Movements in deferr

Income Tax, Movements in deferred tax assets and liabilities (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Deferred Tax Assets [Abstract]
Beginning of period	$ 136,066	$ 165,136
Increase/decrease through the consolidated income statement	5,809	(24,195)
Increase/decrease through other consolidated comprehensive income (equity)	6,147	(10,685)
Other movements	(56)	(6,001)
End of period	147,966	136,066
Deferred Tax Liabilities [Abstract]
Beginning of period	211,000	186,583
Increase/decrease through the consolidated income statement	31,678	17,996
Change in the scope of the consolidated financial statements	2,539	590
Other movements	3,779	(3,018)
End of period	$ 248,996	211,000
Deferred Tax Assets [Member] | IFRS 9 Adjustment [Member]
Deferred Tax Assets [Abstract]
First application of IFRS 9 effective January 1, 2018		11,811
Deferred Tax Liabilities [Member] | IFRS 9 Adjustment [Member]
Deferred Tax Liabilities [Abstract]
First application of IFRS 9 effective January 1, 2018		$ 8,849

Income Tax, Income tax benefit_

Income Tax, Income tax benefit/(expense) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax [Abstract]
Current tax	$ (5,081)	$ (468)	$ (1,998)
Deferred tax	(25,869)	(42,191)	(117,839)
Deferred tax expense (income) relating to origination and reversal of temporary differences	(25,869)	(42,191)	(98,508)
Deferred tax expense (income) relating to changes in tax rates	0	0	(19,331)
Total income tax benefit/(expense)	$ (30,950)	$ (42,659)	$ (119,837)

Income Tax, Effective income ta

Income Tax, Effective income tax rate reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax [Abstract]
Consolidated income / (loss) before taxes	$ 105,558	$ 97,928	$ 14,950
Average statutory tax rate	25.00%	30.00%	30.00%
Corporate income tax at average statutory tax rate	$ (26,390)	$ (29,378)	$ (4,485)
Income tax of associates, net	1,808	1,639	1,765
Differences in foreign tax rates	(7,076)	752	3,304
Permanent differences	11,220	5,385	19,324
Incentives, deductions, and unrecognized tax losses carryforwards	(14,161)	(22,972)	(20,994)
Change in corporate income tax	0	0	(19,331)
U.S Internal Revenue Code Section 382	0	0	(96,328)
Other non-taxable income/(expense)	3,649	1,915	(3,092)
Total income tax benefit/(expense)	$ (30,950)	$ (42,659)	$ (119,837)
Corporate tax rate	21.00%		35.00%
Limitation imposed on net interest expense, that exceeds EBITDA	30.00%
Limitation imposed on net interest expense, that exceeds EBIT	30.00%
Limitation imposed on NOL arising in tax years on taxable income	80.00%
NOL applicable carry forward period	20 years
BEAT applies on entity that exceeds taxable income percentage	10.00%

Commitments, third-party guar_3

Commitments, third-party guarantees, contingent assets and liabilities (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2019	Dec. 31, 2018	Jan. 31, 2019
Contractual Obligations [Abstract]
Corporate debt		$ 723,791	$ 684,073
Loans with credit institutions (project debt)		4,105,915	4,314,307
Notes and bonds (project debt)		746,433	776,807
Purchase commitments	[1]	2,991,432	3,082,495
Accrued interest estimate during the useful life of loans		2,472,070	2,743,132
Lease commitments		93,000	97,400
Current lease commitments		5,100	5,400
Non-current lease commitments		87,900	92,000
Third-party Guarantees [Abstract]
Bank Bond and Surety Insurance deposited as guarantee		38,200	32,400
Issuance of guarantees previously issued by Abengoa		$ 130,100	60,500
Abengoa [Member]
Legal Proceedings [Abstract]
Amount withdrawn from escrow				$ 2,500
Other matters [Abstract]
Term of financial support agreement		5 years
Abengoa [Member] | Mexico [Member]
Legal Proceedings [Abstract]
Estimated maximum potential exposure		$ 35,000
Amount held in escrow		2,500
2019 and 2020 [Member]
Contractual Obligations [Abstract]
Corporate debt		28,706	268,905
Loans with credit institutions (project debt)		241,116	233,214
Notes and bonds (project debt)		28,304	31,241
Purchase commitments	[1]	129,595	131,417
Accrued interest estimate during the useful life of loans		294,676	314,984
2020/2021 and 2020/2022 [Member]
Contractual Obligations [Abstract]
Corporate debt		200,504	107,560
Loans with credit institutions (project debt)		504,921	476,191
Notes and bonds (project debt)		51,508	49,445
Purchase commitments	[1]	278,418	264,461
Accrued interest estimate during the useful life of loans		549,320	565,040
2022/2023 and 2023/2024 [Member]
Contractual Obligations [Abstract]
Corporate debt		200,926	205,258
Loans with credit institutions (project debt)		598,837	571,374
Notes and bonds (project debt)		56,192	54,879
Purchase commitments	[1]	269,632	259,775
Accrued interest estimate during the useful life of loans		471,535	492,932
Subsequent [Member]
Contractual Obligations [Abstract]
Corporate debt		293,655	102,350
Loans with credit institutions (project debt)		2,761,041	3,033,528
Notes and bonds (project debt)		610,429	641,242
Purchase commitments	[1]	2,313,787	2,426,842
Accrued interest estimate during the useful life of loans		1,156,539	$ 1,370,176
Pemex [Member]
Legal Proceedings [Abstract]
Estimated claims		20,000
Arb Inc. [Member]
Legal Proceedings [Abstract]
Amount of settlement payments		4,300
Group of Insurance Companies [Member] | Top of Range [Member]
Legal Proceedings [Abstract]
Estimated claims		200,000
Solana [Member]
Legal Proceedings [Abstract]
Estimated claims		$ 20,000
[1]	Purchase commitments included lease commitments for $93.0 million as of December 31, 2019 ($97.4 million as of December 31, 2018), of which $5.1 million is due within one year and $87.9 million thereafter as of December 31, 2019 ($5.4 million due within one year and $92.0 million thereafter as of December 31, 2018).

Other operating income and ex_3

Other operating income and expenses (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Other operating income [Abstract]
Grants	$ 59,142	$ 59,421	$ 59,707
Income from various services and insurance proceeds	34,632	34,181	21,137
Income from the purchase of the long-term operation and maintenance payable to Abengoa	0	38,955	0
Total	93,774	132,557	80,844
Other operating expenses [Abstract]
Raw materials and consumables used	(9,719)	(10,648)	(16,983)
Leases and fees	(1,850)	(1,716)	(6,641)
Operation and maintenance	(116,018)	(145,857)	(129,873)
Independent professional services	(41,579)	(43,229)	(36,178)
Supplies	(25,823)	(25,947)	(20,350)
Insurance	(23,971)	(24,227)	(24,289)
Levies and duties	(34,844)	(37,439)	(52,409)
Other expenses	(7,971)	(21,579)	(14,721)
Total	$ (261,776)	$ (310,642)	$ (301,444)

Financial income and expenses_2

Financial income and expenses (Details) - USD ($) $ in Thousands	Feb. 24, 2017	Jun. 30, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Financial income [Abstract]
Interest income from loans and credits			$ 3,665	$ 36,296	$ 325
Interest rates benefits derivatives: cash flow hedges			456	148	682
Total			4,121	36,444	1,007
Financial expenses [Abstract]
Expenses due to interest - Loans from credit entities			(259,416)	(256,736)	(253,660)
Expenses due to interest - Other debts			(89,256)	(100,057)	(137,562)
Interest rates losses derivatives: cash flow hedges			(59,318)	(68,226)	(72,495)
Total			(407,990)	(425,019)	(463,717)
Non-monetary financial income		$ 36,600
Other financial income / (expenses) [Abstract]
Dividend from ACBH (Brazil)			0	0	10,383
Other financial income			14,152	14,431	28,809
Other financial losses			(15,305)	(22,666)	(20,758)
Total			(1,153)	(8,235)	18,434
Dividend payable to subsidiary retained	$ 10,400
Liberty [Member]
Financial expenses [Abstract]
Increase in amortized cost			$ 16,000	$ 23,000
Abengoa [Member]
Other financial income / (expenses) [Abstract]
Other financial income resulting from termination of currency swap agreement					$ 16,200

Earnings per share (Details)

Earnings per share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Earnings per share [Abstract]
Profit/(loss) from continuing operations attributable to Atlantica Yield Plc.	$ 62,135	$ 41,596	$ (111,804)
Average number of ordinary shares outstanding (thousands) - basic and diluted (in shares)	101,063	100,217	100,217
Earnings per share from continuing operations - basic and diluted (in dollars per share)	$ 0.61	$ 0.42	$ (1.12)
Earnings per share from profit/ (loss) for the period - basic and diluted (in dollars per share)	$ 0.61	$ 0.42	$ (1.12)

Other information (Details)

Other information (Details) - USD ($) $ / shares in Units, $ in Millions	Feb. 26, 2020	Dec. 31, 2019
Restricted Net Assets [Abstract]
Restricted net assets		$ 789
Subsequent Events [Member]
Subsequent Events [Abstract]
Dividends approved (in dollars per share)	$ 0.41
Dividend approved expected date to be paid	Mar. 23, 2020

Schedule I, Condensed Financi_2

Schedule I, Condensed Financial Statements, of condensed financial position (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Assets [Abstract]
Cash and cash equivalents	$ 562,795	$ 631,542	$ 669,387	$ 594,811
Total assets	9,659,815	9,919,031
Liabilities and Equity [Abstract]
Total liabilities	7,944,959	8,162,919
Common Stock	10,160	10,022
Retained earnings	(385,457)	(449,274)
Total equity	1,714,856	1,756,112	1,895,453	1,959,111
Total equity and liabilities	9,659,815	9,919,031
Parent Company [Member]
Assets [Abstract]
Investment in affiliates	1,909,066	1,883,964
Loans to affiliates	500,871	605,778
Cash and cash equivalents	66,013	106,734	148,525	$ 122,154
Other assets	61,161	8,458
Total assets	2,537,111	2,604,934
Liabilities and Equity [Abstract]
Borrowings	695,874	426,748
Notes and bonds	27,917	257,325
Amounts owed to affiliates	192,601	138,222
Other liabilities	7,205	13,493
Total liabilities	923,597	835,788
Common Stock	10,160	10,022
Additional paid-in capital	1,011,743	1,481,881
Distributable reserves	889,056	548,059
Other reserves	(637)	0
Retained earnings	(296,808)	(270,816)
Total equity	1,613,514	1,769,146	$ 2,087,059
Total equity and liabilities	$ 2,537,111	$ 2,604,934

Schedule I, Condensed Financi_3

Schedule I, Condensed Financial Statements, of condensed income statements (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income from [Abstract]
Total income	$ 1,011,452	$ 1,043,822	$ 1,008,381
Expenses [Abstract]
Other operating expenses	(261,776)	(310,642)	(301,444)
Profit/(loss) before income tax	105,558	97,928	14,950
Income tax benefits/(expense)	(30,950)	(42,659)	(119,837)
Profit/(loss) for the year attributable to the Company	62,135	41,596	(111,804)
Parent Company [Member]
Income from [Abstract]
Services	49,622	54,743	123,944
Other financial income	12,772	4,334	17,419
Total income	62,394	59,077	141,363
Expenses [Abstract]
Other operating expenses	(26,120)	(189,116)	(21,173)
Interests Credit entities	(46,781)	(42,321)	(46,292)
Other financial expenses	(15,485)	(12,083)	(21,333)
Total expenses	(88,386)	(243,520)	(88,798)
Profit/(loss) before income tax	(25,992)	(184,443)	52,565
Income tax benefits/(expense)	0	0	0
Profit/(loss) for the year attributable to the Company	$ (25,992)	$ (184,443)	$ 52,565

Schedule I, Condensed Financi_4

Schedule I, Condensed Financial Statements, of condensed other comprehensive income statement (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Other comprehensive income statement [Abstract]
Profit/(loss) for the year	$ 74,608	$ 55,269	$ (104,887)
Items that may be subject to transfer to income statement [Abstract]
Change in fair value of cash flow hedges	(81,713)	(40,220)	(28,535)
Net income/(expenses) recognized directly in equity	(83,909)	(91,653)	97,815
Cash flow hedges	55,765	67,519	70,953
Transfer to income statement	41,824	50,639	53,215
Other comprehensive income/(loss)	(42,085)	(41,014)	151,030
Total comprehensive income/(loss) for the year	32,523	14,255	46,143
Parent Company [Member]
Other comprehensive income statement [Abstract]
Profit/(loss) for the year	(25,992)	(184,443)	52,565
Items that may be subject to transfer to income statement [Abstract]
Change in fair value of cash flow hedges	(457)	147	(13,666)
Net income/(expenses) recognized directly in equity	(457)	147	(13,666)
Cash flow hedges	(180)	(328)	(32)
Transfer to income statement	(180)	(328)	(32)
Other comprehensive income/(loss)	(637)	(181)	(13,698)
Total comprehensive income/(loss) for the year	$ (26,629)	$ (184,624)	$ 38,867

Schedule I, Condensed Financi_5

Schedule I, Condensed Financial Statements, of condensed cash flow statements (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Condensed cash flow statements [Abstract]
Cash Flow from operating activities	$ 363,581	$ 401,043	$ 385,623
Cash Flow-investing activities [Abstract]
B. Net cash (used in)/provided by investing activities	(118,211)	(14,860)	71,368
Cash Flow-financing activities [Abstract]
Dividend paid to shareowner	(159,002)	(133,289)	(94,845)
C. Net cash provided by/(used in) financing activities	(310,182)	(405,231)	(416,327)
Net increase/(decrease) in cash and cash equivalents	(64,812)	(19,048)	40,664
Cash and cash equivalents at beginning of the year	631,542	669,387	594,811
Cash and cash equivalents at the end of the year	562,795	631,542	669,387
Parent Company [Member]
Condensed cash flow statements [Abstract]
Cash Flow from operating activities	(48,502)	(30,571)	34,937
Cash Flow-investing activities [Abstract]
Decrease (increase) in investment and advance to affiliates	91,181	66,069	151,033
Net decrease (increase) in other assets	0	0	0
B. Net cash (used in)/provided by investing activities	91,181	66,069	151,033
Cash Flow-financing activities [Abstract]
Net increase/(decrease) in borrowings and other liabilities	45,601	56,000	(64,754)
Dividend paid to shareowner	(159,002)	(133,289)	(94,845)
Capital increase and other	30,000	0	0
C. Net cash provided by/(used in) financing activities	(83,401)	(77,289)	(159,599)
Net increase/(decrease) in cash and cash equivalents	(40,721)	(41,791)	26,371
Cash and cash equivalents at beginning of the year	106,734	148,525	122,154
Cash and cash equivalents at the end of the year	$ 66,013	$ 106,734	$ 148,525

Schedule I, Condensed Financi_6

Schedule I, Condensed Financial Statements, Notes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Profit/(Loss) Reconciliation [Abstract]
Profit/(loss) for the period	$ 62,135	$ 41,596	$ (111,804)
Additional profit/(loss) if subsidiaries had been accounted for using the equity method of accounting as opposed to cost method	7,457	5,231	5,351
Equity Reconciliation [Abstract]
Shareholders equity	1,714,856	1,756,112	1,895,453	$ 1,959,111
Parent [Member]
Basis of Presentation [Abstract]
Cash dividend receivable from subsidiaries	0	0	10,383
Profit/(Loss) Reconciliation [Abstract]
Profit/(loss) for the period	(25,992)	(184,443)	52,565
Additional profit/(loss) if subsidiaries had been accounted for using the equity method of accounting as opposed to cost method	88,127	226,039	(164,369)
Equity Reconciliation [Abstract]
Shareholders equity	1,613,514	1,769,146	2,087,059
Additional shareholders equity if subsidiaries had been accounted for using the equity method of accounting as opposed to cost method	$ 101,342	$ (13,034)	$ (191,606)