Atlantica Sustainable Infrastructure (AY) 20-F 1 Mar 24 2023 FY Annual report (foreign) Financial data

Document and Entity Information

Document and Entity Information	12 Months Ended
	Dec. 31, 2023 shares
Entity Addresses [Line Items]
Document Type	20-F
Amendment Flag	false
Document Registration Statement	false
Document Annual Report	true
Document Period End Date	Dec. 31, 2023
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	FY
Document Transition Report	false
Document Shell Company Report	false
Entity File Number	001-36487
Entity Registrant Name	Atlantica Sustainable Infrastructure plc
Entity Central Index Key	0001601072
Entity Incorporation, State or Country Code	X0
Entity Address, Address Line One	Great West House, GW1, 17th floor
Entity Address, Address Line Two	Great West Road
Entity Address, City or Town	Brentford
Entity Address, Country	GB
Entity Address, Postal Zip Code	TW8 9DF
Title of 12(b) Security	Ordinary Shares, nominal value $0.10 per share
Trading Symbol	AY
Security Exchange Name	NASDAQ
Entity Common Stock, Shares Outstanding	116,055,126
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Document Accounting Standard	International Financial Reporting Standards
Document Financial Statement Error Correction [Flag]	false
Entity Shell Company	false
Auditor Name	ERNST & YOUNG, S.L.
Auditor Location	Madrid, Spain
Auditor Firm ID	1461
Business Contact [Member]
Entity Addresses [Line Items]
Contact Personnel Name	Leire PerezZ Arreui
Entity Address, Address Line One	Great West House, GW1, 17th Floor
Entity Address, Address Line Two	Great West Road
Entity Address, City or Town	Brentford
Entity Address, Country	GB
Entity Address, Postal Zip Code	TW8 9DF
City Area Code	44
Local Phone Number	203 499 0465

Consolidated statements of fina

Consolidated statements of financial position - USD ($)	Dec. 31, 2023	Dec. 31, 2022
Non-current assets
Contracted concessional, PP&E and other intangible assets	$ 7,204,267,000	$ 7,483,259,000
Investments carried under the equity method	230,307,000	260,031,000
Other accounts receivable	79,875,000	86,431,000
Derivative assets	56,707,000	89,806,000
Other financial assets	136,582,000	176,237,000
Deferred tax assets	160,995,000	149,656,000
Total non-current assets	7,732,151,000	8,069,183,000
Current assets
Inventories	29,870,000	34,511,000
Trade receivables	213,345,000	125,437,000
Credits and other receivables	73,138,000	74,897,000
Trade and other receivables	286,483,000	200,334,000
Other financial assets	188,886,000	195,893,000
Cash and cash equivalents	448,301,000	600,990,000
Total current assets excluding asset held for sale	953,540,000	1,031,728,000
Assets held for sale	28,642,000	0
Total current assets	982,182,000	1,031,728,000
Total assets	8,714,333,000	9,100,911,000
Equity attributable to the Company
Share capital	11,615,905	11,605,513
Share premium	736,594,000	986,594,000
Capital reserves	858,220,000	814,951,000
Other reserves	308,002,000	345,567,000
Accumulated currency translation differences	(139,434,000)	(161,307,000)
Accumulated deficit	(351,521,000)	(397,540,000)
Non-controlling interest	165,332,000	189,176,000
Total equity	1,588,809,000	1,789,047,000
Non-current liabilities
Long-term corporate debt	1,050,816,000	1,000,503,000
Borrowings	3,061,033,000	3,322,115,000
Notes and bonds	870,840,000	904,403,000
Long-term project debt	3,931,873,000	4,226,518,000
Grants and other liabilities	1,233,808,000	1,252,513,000
Derivative liabilities	29,957,000	16,847,000
Deferred tax liabilities	271,288,000	296,481,000
Total non-current liabilities	6,517,742,000	6,792,862,000
Current liabilities
Short-term corporate debt	34,022,000	16,697,000
Borrowings	332,734,000	273,556,000
Notes and bonds	54,653,000	52,978,000
Short-term project debt	387,387,000	326,534,000
Trade payables and other current liabilities	141,713,000	140,230,000
Income and other tax payables	44,660,000	35,541,000
Total current liabilities	607,782,000	519,002,000
Total equity and liabilities	$ 8,714,333,000	$ 9,100,911,000

Consolidated statements of prof

Consolidated statements of profit or loss - USD ($) shares in Thousands, $ in Thousands		12 Months Ended
		Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Consolidated statements of profit or loss [Abstract]
Revenue		$ 1,099,894	$ 1,102,029	$ 1,211,749
Other operating income		101,087	80,782	74,670
Employee benefit expenses		(104,083)	(80,232)	(78,758)
Depreciation, amortization, and impairment charges		(418,271)	(473,638)	(439,441)
Other operating expenses		(336,622)	(351,248)	(414,330)
Operating profit		342,005	277,693	353,890
Financial income		25,007	10,149	5,962
Financial expense		(323,749)	(330,445)	(360,898)
Net exchange differences		(2,549)	10,257	1,873
Other financial income/(loss), net		(16,683)	(895)	12,171
Financial expense, net		(317,974)	(310,934)	(340,892)
Share of profit of entities carried under the equity method		13,207	21,465	12,304
Profit /(loss) before income tax		37,238	(11,776)	25,302
Income tax (expense)/income		(790)	9,689	(36,220)
Profit/(loss) for the year		36,448	(2,087)	(10,918)
Profit/(loss) attributable to non-controlling interest		6,932	(3,356)	(19,162)
Profit/(loss) for the year attributable to the Company		$ 43,380	$ (5,443)	$ (30,080)
Weighted average number of ordinary shares outstanding - basic (in shares)		116,152	114,695	111,008
Weighted average number of ordinary shares outstanding - diluted (in shares)		119,720	118,865	115,408
Basic earnings per share (in dollars per share)		$ 0.37	$ (0.05)	$ (0.27)
Diluted earnings per share (in dollars per share)	[1],[2]	$ 0.37	$ (0.09)	$ (0.28)
[1] Antidilutive effect applied, where applicable (see Note 24)

Consolidated statements of comp

Consolidated statements of comprehensive income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Consolidated statements of comprehensive income [Abstract]
Profit/(loss) for the year	$ 36,448	$ (2,087)	$ (10,918)
Items that may be subject to transfer to profit and loss statement
Change in fair value of cash flow hedges	(22,437)	218,737	33,846
Currency translation differences	24,584	(33,704)	(41,956)
Tax effect	1,258	(54,405)	(9,139)
Net income/(expense) recognized directly in equity	3,405	130,628	(17,249)
Cash flow hedges	(27,115)	38,187	58,292
Tax effect	6,779	(9,547)	(14,573)
Transfers to profit and loss statement	(20,336)	28,640	43,719
Other comprehensive income/(loss)	(16,931)	159,268	26,470
Total comprehensive income for the year	19,517	157,181	15,552
Total comprehensive (income)/loss attributable to non-controlling interest	8,171	(14,613)	(14,586)
Total comprehensive income attributable to the Company	$ 27,688	$ 142,568	$ 966

Consolidated statements of chan

Consolidated statements of changes in equity - USD ($) $ in Thousands	Total	Total Equity Attributable to Company [Member]	Share Capital [Member]	Share Premium [Member]	Capital Reserves [Member]	Other Reserves [Member]	Accumulated Currency Translation Differences [Member]	Accumulated Deficit [Member]	Non-controlling Interests [Member]
Balance, beginning of period at Dec. 31, 2020	$ 1,740,881	$ 1,527,382	$ 10,667	$ 1,011,743	$ 881,745	$ 96,641	$ (99,925)	$ (373,489)	$ 213,499
Profit/(Loss) for the year after taxes	(10,918)	(30,080)	0	0	0	0	0	(30,080)	19,162
Change in fair value of cash flow hedges net of transfer to profit and loss statement	92,138	87,361	0	0	0	97,421	0	(10,060)	4,777
Currency translation differences	(41,956)	(33,525)	0	0	0	0	(33,525)	0	(8,431)
Tax effect	(23,712)	(22,790)	0	0	0	(22,790)	0	0	(922)
Other comprehensive income/(loss)	26,470	31,046	0	0	0	74,631	(33,525)	(10,060)	(4,576)
Total comprehensive income for the year	15,552	966	0	0	0	74,631	(33,525)	(40,140)	14,586
Capital contribution	189,761	189,761	573	60,268	128,920	0	0	0	0
Reduction of Share Premium	0	0	0	(200,000)	200,000	0	0	0	0
Business combinations	8,287	0	0	0	0	0	0	0	8,287
Share-based compensation	14,928	14,928	0	0	0	0	0	14,928	0
Distributions	(220,804)	(190,638)	0	0	(190,638)	0	0	0	(30,166)
Balance, end of period at Dec. 31, 2021	1,748,605	1,542,399	11,240	872,011	1,020,027	171,272	(133,450)	(398,701)	206,206
Profit/(Loss) for the year after taxes	(2,087)	(5,443)	0	0	0	0	0	(5,443)	3,356
Change in fair value of cash flow hedges net of transfer to profit and loss statement	256,924	237,305	0	0	0	235,732	0	1,573	19,619
Currency translation differences	(33,704)	(27,857)	0	0	0	0	(27,857)	0	(5,847)
Tax effect	(63,952)	(61,437)	0	0	0	(61,437)	0	0	(2,515)
Other comprehensive income/(loss)	159,268	148,011	0	0	0	174,295	(27,857)	1,573	11,257
Total comprehensive income for the year	157,181	142,568	0	0	0	174,295	(27,857)	(3,870)	14,613
Capital contribution	112,979	112,979	366	114,583	(1,970)	0	0	0	0
Business combinations	14,300	0	0	0	0	0	0	0	14,300
Share-based compensation	5,031	5,031	0	0	0	0	0	5,031	0
Distributions	(249,049)	(203,106)	0	0	(203,106)	0	0	0	(45,943)
Balance, end of period at Dec. 31, 2022	1,789,047	1,599,871	11,606	986,594	814,951	345,567	(161,307)	(397,540)	189,176
Profit/(Loss) for the year after taxes	36,448	43,380	0	0	0	0	0	43,380	(6,932)
Change in fair value of cash flow hedges net of transfer to profit and loss statement	(49,552)	(44,335)	0	0	0	(44,335)	0	0	(5,217)
Currency translation differences	24,584	21,873	0	0	0	0	21,873	0	2,711
Tax effect	8,037	6,770				6,770	0	0	1,267
Other comprehensive income/(loss)	(16,931)	(15,692)	0	0	0	(37,565)	21,873	0	(1,239)
Total comprehensive income for the year	19,517	27,688	0	0	0	(37,565)	21,873	43,380	(8,171)
Capital contribution	19,502	35	10	0	25	0	0	0	19,467
Divestments (Note 7)	(2,817)		0	0	0	0	0	0	(2,817)
Reduction of Share Premium	0	0	0	(250,000)	250,000	0	0	0	0
Share-based compensation	2,639	2,639		0	0	0	0	2,639	0
Distributions	(239,079)	(206,756)	0	0	(206,756)	0	0	0	(32,323)
Balance, end of period at Dec. 31, 2023	$ 1,588,809	$ 1,423,477	$ 11,616	$ 736,594	$ 858,220	$ 308,002	$ (139,434)	$ (351,521)	$ 165,332

Consolidated cash flow statemen

Consolidated cash flow statements - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Consolidated cash flows statements [Abstract]
Profit/(loss) for the year	$ 36,448	$ (2,087)	$ (10,918)
Non-monetary adjustments
Depreciation, amortization and impairment charges	418,271	473,638	439,441
Financial expense	319,286	335,546	359,550
Fair value gains on derivative financial instruments	(1,869)	(19,138)	(16,785)
Shares of profits from entities carried under the equity method	(13,207)	(21,465)	(12,304)
Income tax	790	(9,689)	36,220
Other non-monetary items	(3,119)	27,996	55,809
Profit/(loss) for the year adjusted by non-monetary items	756,600	784,801	851,013
Changes in working capital
Inventories	(6,285)	(6,955)	5,215
Trade and other receivables	(107,201)	99,249	48,521
Trade payables and other current liabilities	(415)	(6,158)	(25,782)
Other current assets/liabilities	18,057	(7,331)	(31,081)
Changes in working capital	(95,844)	78,805	(3,127)
Income tax paid	(26,020)	(14,730)	(51,684)
Interest received	21,668	9,178	2,519
Interest paid	(268,356)	(271,732)	(293,098)
A. Net cash provided by operating activities	388,048	586,322	505,623
Business combinations and investments in entities under the equity method	(29,259)	(50,507)	(362,449)
Investments in operating concessional assets	(27,929)	(39,107)	(19,216)
Investments in assets under development or construction	(56,280)	(36,784)	(7,028)
Distributions from entities under the equity method	34,329	67,695	34,883
Net divestment in other non-current financial assets	27,505	1,265	2,655
Net cash used in investing activities	(51,634)	(57,438)	(351,155)
Proceeds from project debt	213,232	0	14,560
Proceeds from corporate debt	161,498	101,140	429,014
Repayment of project debt	(531,837)	(426,396)	(418,265)
Repayment of corporate debt	(115,891)	(80,519)	(376,154)
Dividends paid to Company's shareholders	(206,755)	(203,106)	(190,638)
Dividends paid to non-controlling interest	(31,433)	(39,209)	(28,134)
Non-controlling interest capital contribution	19,823	0	0
Capital contribution	0	113,072	189,454
C. Net cash used in financing activities	(491,363)	(535,018)	(380,163)
Net decrease in cash and cash equivalents	(154,949)	(6,134)	(225,695)
Cash and cash equivalents at beginning of the year	600,990	622,689	868,501
Translation differences in cash and cash equivalents	2,260	(15,565)	(20,117)
Cash and cash equivalents at the end of the year	$ 448,301	$ 600,990	$ 622,689

Nature of the business

Nature of the business	12 Months Ended
	Dec. 31, 2023
Nature of the business [Abstract]
Nature of the business	Note 1.- Nature of the business A tlantica Sustainable Infrastructure plc (“Atlantica” or the “Company”) is a sustainable infrastructure company with a majority of its business in renewable energy assets. Atlantica currently owns, manages and invests in renewable energy, storage, efficient natural gas and heat, electric transmission lines and water assets focused on North America (the United States, Canada and Mexico), South America (Peru, Chile, Colombia and Uruguay) and EMEA (Spain, Italy, Algeria and South Africa). Its registered address is Great West House, GW1 Great West Road Brentford TW8 9DF, London (United Kingdom). Atlantica’s shares trade on the NASDAQ Global Select Market under the symbol “AY”. In March 2023, the Company completed the process of transitioning O&M services for the assets in Spain where Abengoa was still the supplier to an Atlantica’ subsidiary (Note 5). Currently, Atlantica performs the O&M services with its own personnel for assets representing approximately 74% of the consolidated revenue for the year ended December 31, 2023. The following assets that the Company had under construction during finished construction and reached Commercial Operation Date (“COD”) in : - Albisu, a MW solar PV asset wholly owned by the Company. Albisu is located in the city of Salto (Uruguay). The asset has a -year PPA with Montevideo Refrescos, S.R.L, a subsidiary of Coca-Cola Femsa., S.A.B. de C.V. The PPA is denominated in local currency with a maximum and minimum price in U.S. dollars and is adjusted monthly based on a formula referring to U.S. Producer Price Index (PPI), Uruguay’s Consumer Price Index (CPI) and the applicable UYU/U.S. dollar exchange rate. - La Tolua and Tierra Linda, wholly owned solar PV assets in Colombia with a combined capacity of MW, both of which reached COD in the first quarter of 2023. Each plant has a 10-year PPA in local currency indexed to local inflation with Coenersa, the largest independent electricity wholesaler in Colombia. Each PPA provides for the sale of electricity at fixed base price indexed to local CPI. - Honda a 10 MW solar PV asset in Colombia where the Company has a ownership, and which reached COD in December The asset has a -year PPA with Enel Colombia, a major electricity company in the country. The PPA is denominated in local currency, with fixed base price, indexed to the local CPI. During the year , the Company completed the following investments: - On . - On April 4, 2022, the Company closed the acquisition of Italy PV 4, a 3.6 MW solar portfolio in Italy for a total equity investment of $3.7 million (Note 5). The asset has regulated revenues under a feed in tariff until 2031. - On September 2, 2022, the Company completed its third investment through its Chilean renewable energy platform in a 73 MW solar PV plant, Chile PV 3, located in Chile, for $7.7 million corresponding to a 35% of equity interest (Note 5). The Company expects to install batteries with a capacity of approximately 100 MWh in 2024. Total investment including batteries is expected to be in the range of $15 million to $25 million depending on the capital structure. Part of the asset’s revenue is currently based on capacity payments. Adding storage would increase the portion of capacity payments . - On November 16, 2022, the Company closed the acquisition of a 49% interest, with joint control, in an 80 MW portfolio of solar PV projects in Chile, Chile PMGD, which is currently under construction. Atlantica´s economic rights are expected to be approximately 70%. Total investment in equity and preferred equity is expected to be approximately $30 million and COD is expected to be progressive in 2024. Revenue for these assets is regulated under the Small Distributed Generation Means Regulation Regime (“PMGD”) for projects with a capacity equal or lower than 9MW, which allows to sell electricity through a stabilized price . The following table provides an overview of the main operating assets the Company owned or had an interest in as of December : Assets Type Ownership Location Currency (9) Capacity (Gross) Counterparty Credit Ratings (10) COD* Contract Years Remaining (17) Solana Renewable (Solar) 100% Arizona (USA) USD 280 MW BBB+/A3/BBB+ 2013 20 Mojave Renewable (Solar) 100% California (USA) USD 280 MW BB/ Ba1/BB+ 2014 16 Coso Renewable (Geothermal) 100% California (USA) USD 135 MW Investment Grade (11) 1987-1989 18 Elkhorn Valley (16) Renewable (Wind) 49% Oregon (USA) USD 101 MW BBB/Baa1/-- 2007 4 Prairie Star (16) Renewable (Wind) 49% Minnesota (USA) USD 101 MW --/A3/A- 2007 4 Twin Groves II (16) Renewable (Wind) 49% Illinois (USA) USD 198 MW BB+/Baa2/-- 2008 2 Lone Star II (16) Renewable (Wind) 49% Texas (USA) USD 196 MW N/A 2008 N/A Chile PV 1 Renewable (Solar) 35% (1) Chile USD 55 MW N/A 2016 N/A Chile PV 2 Renewable (Solar) 35% (1) Chile USD 40 MW Not rated 2017 7 Chile PV 3 Renewable (Solar) 35% (1) Chile USD 73 MW N/A 2014 N/A La Sierpe Renewable (Solar) 100% Colombia COP 20 MW Not rated 2021 12 La Tolua Renewable (Solar) 100% Colombia COP 20 MW Not rated 2023 9 Tierra Linda Renewable (Solar) 100% Colombia COP 10 MW Not rated 2023 9 Honda 1 Renewable (Solar) 50% Colombia COP 10 MW BBB-/-/BBB 2023 7 Albisu Renewable (Solar) 100% Uruguay UYU 10 MW Not rated 2023 15 Palmatir Renewable (Wind) 100% Uruguay USD 50 MW BBB+/Baa2/BBB (12) 2014 10 Cadonal Renewable (Wind) 100% Uruguay USD 50 MW BBB+/Baa2/BBB (12) 2014 11 Melowind Renewable (Wind) 100% Uruguay USD 50 MW BBB+/Baa2/BBB (12) 2015 12 Mini-Hydro Renewable (Hydraulic) 100% Peru USD 4 MW BBB/Baa1/BBB 2012 9 Solaben 2 & 3 Renewable (Solar) 70% (2) Spain Euro 2x50 MW A/Baa1/A- 2012 14/14 Solacor 1 & 2 Renewable (Solar) 87% (3) Spain Euro 2x50 MW A/Baa1/A- 2012 13/13 PS10 & PS20 Renewable (Solar) 100% Spain Euro 31 MW A/Baa1/A- 2007&2009 8/10 Helioenergy 1 & 2 Renewable (Solar) 100% Spain Euro 2x50 MW A/Baa1/A- 2011 13/13 Helios 1 & 2 Renewable (Solar) 100% Spain Euro 2x50 MW A/Baa1/A- 2012 13/14 Solnova 1, 3 & 4 Renewable (Solar) 100% Spain Euro 3x50 MW A/Baa1/A- 2010 11/11/12 Solaben 1 & 6 Renewable (Solar) 100% Spain Euro 2x50 MW A/Baa1/A- 2013 15/15 Seville PV Renewable (Solar) 80% (4) Spain Euro 1 MW A/Baa1/A- 2006 12 Italy PV 1 Renewable (Solar) 100% Italy Euro 1.6 MW BBB/Baa3/BBB 2010 8 Italy PV 2 Renewable (Solar) 100% Italy Euro 2.1 MW BBB/Baa3/BBB 2011 8 Italy PV 3 Renewable (Solar) 100% Italy Euro 2.5 MW BBB/Baa3/BBB 2012 8 Italy PV 4 Renewable (Solar) 100% Italy Euro 3.6 MW BBB/Baa3/BBB 2011 8 Kaxu Renewable (Solar) 51% (5) South Africa Rand 100 MW BB-/Ba2/BB- (13) 2015 11 Calgary Efficient natural gas &heat 100% Canada CAD 55 MWt ~60% AA- or higher (14) 2010 12 ACT Efficient natural gas & heat 100% Mexico USD 300 MW BBB/B3/B+ 2013 9 Monterrey (18) Efficient natural gas &heat 30% Mexico USD 142 MW Not rated 2018 22 ATN (15) Transmission line 100% Peru USD 379 miles BBB/Baa1/BBB 2011 17 ATS Transmission line 100% Peru USD 569 miles BBB/Baa1/BBB 2014 20 ATN 2 Transmission line 100% Peru USD 81 miles Not rated 2015 9 Quadra 1 & 2 Transmission line 100% Chile USD 49 miles/32 miles Not rated 2014 11/11 Palmucho Transmission line 100% Chile USD 6 miles BBB/ -- /BBB+ 2007 14 Chile TL3 Transmission line 100% Chile USD 50 miles A/A2/A- 1993 N/A Chile TL4 Transmission line 100% Chile USD 63 miles Not rated 2016 48 Skikda Water 34.20% (6) Algeria USD 3.5 M ft3/day Not rated 2009 10 Honaine Water 25.50% (7) Algeria USD 7 M ft3/day Not rated 2012 14 Tenes Water 51% (8) Algeria USD 7 M ft3/day Not rated 2015 16 (1) 65% of (2) Itochu Corporation holds 30% of the shares in each of Solaben 2 and Solaben 3. (3) JGC holds 13% of the shares in each of Solacor 1 and Solacor 2. (4) Instituto para la Diversificación y Ahorro de la Energía (“Idae”) holds 20% of the shares in Seville PV. (5) Kaxu is owned by the Company (51%), Industrial Development Corporation of South Africa (“IDC”, 29%) and Kaxu Community Trust (20%). (6) Algerian Energy Company, SPA owns 49% of Skikda and Sacyr Agua, S.L. owns the remaining 16.8%. (7) Algerian Energy Company, SPA owns 49% of Honaine and Sacyr Agua, S.L. owns the remaining 25.5%. (8) Algerian Energy Company, SPA owns 49% of Tenes. The Company has an investment in Tenes through a secured loan to Befesa Agua Tenes (the holding company of Tenes) and the right to appoint a majority at the board of directors of the project company. Therefore, the Company controls Tenes since May 31, 2020, and fully consolidates the asset from that date. (9) Certain contracts denominated in U.S. dollars are payable in local currency. (10) 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. Not applicable (“N/A”) when the asset has no PPA. (11) Refers to the credit rating of two Community Choice Aggregators: Silicon Valley Clean Energy and Monterrey Bar Community Power, both with A Rating from S&P and Southern California Public Power Authority. The third off-taker is not rated. (12) Refers to the credit rating of Uruguay, as UTE (Administración Nacional de Usinas y Transmisoras Eléctricas) is unrated. (13) Refers to the credit rating of the Republic of South Africa. The off-taker is Eskom, which is a state-owned utility company in South Africa. (14) Refers to the credit rating of a diversified mix of 22 high credit quality clients (~60% AA- rating or higher, the rest is unrated). (15) Including ATN Expansion 1 & 2. (16) Part of Vento II Portfolio. (17) As of December 31, 2023. (18) Accounted for as held for sale as of December 31, 2023. (*) Commercial Operation Date. Additionally, Atlantica currently has the following assets under construction or ready to start construction in the short term: Asset Type Location Capacity (gross) 1 Expected COD Expected Investment 2 ( $ million ) Off-taker Coso Batteries 1 Battery Storage California, US 100 MWh 2025 40-50 Investment grade utility Coso Batteries 2 Battery Storage California, US 80 MWh 2025 35-45 Investment grade utility Chile PMGD Solar PV Chile 80 MW 2024-2025 30 Regulated ATN Expansion 3 Transmission Line Peru 2.4miles 220kV 2024 12 Conelsur ATS Expansion 1 Transmission Line Peru n.a. (substation) 2025 30 Republic of Peru Honda 2 (3) Solar PV Colombia 10 MW 2024 5.5 Enel Colombia Apulo 1 (3) Solar PV Colombia 10 MW 2024 5.5 - (1) Includes nominal capacity on a 100% basis, not considering Atlantica’s ownership (2) Corresponds to the expected investment by Atlantica (3) Atlantic a owns of th In October 2023, the Company entered into two 15-year tolling agreements (PPAs) with an investment grade utility for Coso Batteries 1 and Coso Batteries 2. Under each of the tolling agreements, Coso Batteries 1 and 2 will receive fixed monthly payments adjusted by the financial settlement of CAISO’s ( Day-Ahead market. In addition, the Company expects to obtain revenue from ancillary services in each of the assets. Coso Batteries 1 is a standalone battery storage project of 100 MWh (4 hours) capacity, located inside Coso, its geothermal asset in California. Additionally, Coso Batteries 2 is a standalone battery storage project with 80 MWh (4 hours) capacity also located inside Coso. The investment is expected to be in the range of $40 million to $50 million for Coso Batteries 1, and in the range of $35 to $45 million for Coso Batteries 2. Both projects were fully developed in-house and are now under construction. Atlantica has closed a contract with Tesla for the procurement of the batteries. COD is expected in 2025 for both projects. In July 2022 the Company closed a 17-year transmission service agreement denominated in U.S. dollars that allows to build a substation and a 2.4-miles transmission line connected to ATN transmission line serving a new mine in Peru (ATN Expansion 3). The substation is expected to enter in operation in 2024 and the investment is expected to be approximately $12 million. In July 2023, as part of the New Transmission Plan Update in Peru, the Ministry of Energy and Mines published the Ministerial Resolution that enables to start construction of ATS Expansion 1 project, consisting in the reinforcement of two existing substations with new equipment. The expansion will be part of the existing concession contract, a 30-year contract with a fixed-price tariff base denominated in U.S. dollars adjusted annually in accordance with the U.S. Finished Goods Less Foods and Energy Index as published by the U.S. Department of Labor. Given that the concession ends in 2044, Atlantica will be compensated with a one-time payment for the remaining years of concession. The expansion is expected to enter in operation in 2025 and the investment is expected to be approximately $30 million. In May 2022, the Company agreed to develop and construct Honda 1 and 2, two PV assets in Colombia with a combined capacity of , where it has a ownership. Each plant has a -year PPA with Enel Colombia. Honda 1, as it is stated above, reached COD in December 2023. Honda 2 is expected to enter into operation in the second quarter of 2024. The investment is expected to be $5.5 million for each plant. Chile PV 1 and PV 2 events of default Due to low electricity prices in Chile, the project debts of Chile PV and PV where the Company owns a equity interest, are under an event of default as of December Chile PV was not able to maintain the minimum required cash in its debt service reserve account as of December and did not make its debt service payment in January In addition, in October Chile PV did not make its debt service payment. This asset obtained additional financing from the banks and made the debt service payment in December although it was not able to fund its debts service reserve account. As a result, although the Company does not expect an acceleration of the debts to be declared by the credit entities, Chile PV and Chile PV did not have an unconditional right to defer the settlement of the debts for at least months and the project debts, which amount to as of December (Note , were classified as current in these Consolidated Financial Statements in accordance with International Accounting Standards (“IAS ”), “Presentation of Financial Statements”. The Company is, together with the partner, in conversations with the banks regarding a potential waiver. The Consolidated Financial Statements were approved by the Board of Directors of the Company on February

Significant accounting policies

Significant accounting policies	12 Months Ended
	Dec. 31, 2023
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. The Company presents assets and liabilities in the statement of financial position based on current/non-current classification. An asset or liability is current when it is expected or due to be realized within twelve months after the reporting period. The Company recognizes that there may be potential financial implications in the future from changes in legislation and regulation implemented to address climate change risk. Over time these changes may have an impact across a number of areas of accounting. However, as at the reporting sheet date, the Company believes there is no material impact on the balance sheet carrying values of assets or liabilities. Application of new accounting standards a) Standards, interpretations and amendments effective from January 1, 2023 under IFRS-IASB, applied by the Company in the preparation of these Consolidated Financial Statements: The applications of these amendments have not had any material impact on these Consolidated Financial Statements. In addition, the IASB published in May 2023 an amendment to IAS 12, “Income taxes”, to clarify the application of this standard arising from tax legislation enacted or substantively enacted in each country to implement the Pillar Two model rules in which it provides: - a temporary exception to the accounting for deferred taxes in connection with the implementation of Pillar Two. - qualitative and quantitative disclosures to enable users to understand the entities’ exposure to taxes that may arise from the Pillar Two model rules and/or the entity’s progress in its implementation. Global minimum taxation (Pillar Two OECD/G20 BEPS 2.0 top-up taxes as agreed by the Inclusive Framework) legislation has been enacted or substantially enacted in certain jurisdictions in which the Atlantica operates. The new legislation will be effective for the Company´s financial years beginning January 1, 2024. Atlantica is in scope of the enacted or substantially enacted legislation and has performed an assessment of the Company´s potential exposure to Pillar Two top-up taxes. The assessment is based on the country-by-country reporting and financial statements for the constituent entities of Atlantica. Based on the assessment performed, the Pillar Two effective tax rates in most of the jurisdictions in which Atlantica operates are above 15% and in all of them meet the requirements to apply the relevant transitional safe harbors, with the exception of one jurisdiction, whose impact is not material. Therefore, Atlantica does not expect a material exposure to Pillar Two income taxes for accounting periods commencing on or after December 31, 2023. b) Standards, interpretations and amendments published by the IASB that will be effective for periods beginning on or after January 1, 2024: 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, 2024, although it is currently still in the process of evaluating such application. The Company has not early adopted any standard, interpretation or amendment that has been issued but is not yet effective. 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 control over them and are accounted for as investments under the equity method as long as Atlantica has 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 previously 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 in profit or loss. 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. A joint venture is a type of joint arrangement whereby the parties that have joint control of the arrangement have rights to the net assets of the joint venture. Joint control is the contractually agreed sharing of control of an arrangement, which exists only when decisions about the relevant activities require the unanimous consent of the parties sharing control. The results and assets and liabilities of associates and joint ventures are incorporated in these financial statements using the equity method of accounting. Under the equity method, an investment in an associate or joint venture is initially recognized in the statement of financial position at fair value and adjusted thereafter to recognize changes in Atlantica´s share of net assets of the associate or joint venture since the acquisition date. Any goodwill relating to the associate or joint venture is included in the carrying amount of the investment and is not tested for impairment separately. Controlled entities, associates and joint ventures included in these financial statements as of December 31, 2023 and 2022 are set out in appendices. 2.3. Contracted concessional, Property, Plant and Equipment (PP&E) and other intangible The assets accounted for by the Company as contracted concessional assets under IFRIC 12 (either intangible model or financial model), as PP&E under IAS 16 or as other intangible assets under IAS 38 or under IFRS 16 (as “Lessee” or “Lessor”), include renewable energy assets, storage assets, transmission lines, efficient natural gas and heat assets and water plants. a) Contracted concessional assets under IFRIC 12 The infrastructure used in a concession accounted for under IFRIC 12 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 judgement in relation to, among other factors, (i) the identification of certain infrastructures and contractual agreements in the scope of IFRIC 12, (ii) an 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 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 IFRS 15 for the services it performs. If the operator performs more than one service (i.e. construction or upgrade services and operation services) under a single contract or arrangement, consideration received or receivable shall be allocated by reference to the relative fair values of the services delivered, when the amounts are separately identifiable. Consequently, even though construction is subcontracted and it is not performed by Atlantica, in accordance with the provisions of IFRIC 12, the Company recognizes and measures revenue and costs for providing construction services during the period of construction of the infrastructure in accordance with IFRS 15. Construction revenue is recorded within “Other operating income” and Construction cost, which is fully contracted, is recorded within “Other operating expenses”. This applies in the same way to the two models. The useful life of these assets is approximately the same as the length of the concession arrangement. Intangible assets 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 expense is as follows: - Revenues from the updated annual revenue for the contracted concession, as well as revenues from 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. 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, using a theoretical internal return rate specific to the asset. Revenue from operations and maintenance services is recognized in each period according to IFRS 15 “Revenue from contracts with Customers”. Allowance for expected credit losses (financial assets) According to IFRS 9, Atlantica recognizes 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 applies 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, based on external sources of information, 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. b) Property, plant and equipment under IAS 16 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. Such cost includes the cost of replacing part of the plant and equipment and borrowing costs for long-term installation projects if the recognition criteria are met. Repair and maintenance costs are recognized in profit or loss as incurred. Depreciation is calculated on a straight-line basis over the estimated useful lives of the assets. The Company reviews the estimated residual values and expected useful lives of assets at least annually. In particular, the Company considers the impact of health, safety and environmental legislation in its assessment of expected useful lives and estimated residual values. An item of property, plant and equipment and any significant part initially recognized is derecognized upon disposal (i.e., at the date the recipient obtains control) or when no future economic benefits are expected from its use or disposal. Any gain or loss arising on derecognition of the asset (calculated as the difference between the net disposal proceeds and the carrying amount of the asset) is included in the statement of profit or loss when the asset is derecognized. c) Rights of use under IFRS 16 The Company assesses at contract inception whether a contract is, or contains, a lease. That is, if the contract conveys the right to control the use of an identified asset for a period of time in exchange for consideration. Company as a lessee: The Company applies a single recognition and measurement approach for all leases, except for short-term leases and leases of low-value assets. The Company recognizes lease liabilities to make lease payments and right-of-use assets representing the right to use the underlying 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 (Note 2.12). 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. d) Other intangible assets Other intangible assets acquired separately are measured on initial recognition at cost. The cost of intangible assets acquired in a business combination is their fair value at the date of acquisition. Following initial recognition, intangible assets are carried at cost less any accumulated amortization and accumulated impairment losses. Intangible assets are amortized using the straight-line method over the useful economic life and assessed for impairment whenever there is an indication that the intangible asset may be impaired. An intangible asset is derecognised upon disposal (i.e., at the date the recipient obtains control) or when no future economic benefits are expected from its use or disposal. Any gain or loss arising upon derecognition of the asset (calculated as the difference between the net disposal proceeds and the carrying amount of the asset) is included in the statement of profit or loss. Research and development costs: Research costs are expensed as incurred. Development expenditures on an individual project are recognised as an intangible asset when the Company can demonstrate: - the technical feasibility of completing the intangible asset so that the asset will be available for use or sale - its intention to complete and its ability and intention to use or sell the asset - how the asset will generate future economic benefits - the availability of resources to complete the asset - the ability to measure reliably the expenditure during development. Following initial recognition of the development expenditure as an asset, the asset is carried at cost less any accumulated amortization and accumulated impairment losses. Amortization of the asset begins when development is complete, and the asset is available for use. It is amortized using the straight-line method over the period of expected future benefit. During the period of development, the asset is tested for impairment annually. e) Asset impairment Atlantica reviews its contracted concessional, PP&E and other intangible assets to identify any indicators of impairment at least annually, except for ECL assessment for financial assets which is discussed above. 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 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 relevant 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 third-party reports, 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 located. In any case, sensitivity analyses are performed, especially in relation to 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. 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 profit and loss statement under the item “Depreciation, amortization and impairment charges”. An assessment is made at each reporting date to determine whether there is an indication that previously recognized impairment losses no longer exist or have decreased. If such indication exists, the Company estimates the CGU’s recoverable amount. A previously recognized impairment loss is reversed only if there has been a change in the assumptions used to determine the asset’s recoverable amount since the last impairment loss was recognized. The reversal is limited so that the carrying amount of the asset does not exceed its recoverable amount, nor exceed the carrying amount that would have been determined, net of depreciation, had no impairment loss been recognized for the asset in prior years. Such reversal is recognized in the profit and loss statement. 2.4. R evenue recognition According to IFRS 15, Revenue from Contracts with Customers, the Company assesses the goods and services promised in the contracts with the customers and identifies as a performance obligation each promise to transfer to the customer a good or service (or a bundle of goods or services). In the case of contracts related to intangible or financial assets under IFRIC 12, the performance obligation of the Company is the operation of the asset. The contracts between the parties set the price of the service in an orderly transaction and therefore corresponds to the fair value of the service provided. The service is satisfied over time. The same conclusion applies to concessional assets that are classified as tangible assets under IAS 16 or leases under IFRS 16. All of the transaction prices of assets under IFRIC 12 are fixed and included as part of the long-term PPAs of the Company as disclosed in Appendix III-2. In the case of financial asset under IFRIC 12, the financial asset accounts for the payments to be received from the client over the residual life of the contract, discounted at a theoretical internal rate of return for the project. In each period, the financial asset is reduced by the amounts received from the client and increased by any capital expenditure that the project may incur and by the effect of unwinding the discount of the financial asset at the theoretical internal rate of return. The increase of the financial asset deriving from the unwinding of the discount of the financial asset is recorded as revenue in each period. Revenue will therefore differ from the actual billings made to the client in each period. In the case of Spain, according to Royal Decree 413/2014, solar electricity producers receive: (i) the market price for the power they produce, (ii) a payment based on the standard investment cost for each type of plant (without any relation whatsoever to the amount of power they generate) and (iii) an “operating payment” (in €/MWh produced). The principle driving this economic regime is that the payments received by a renewable energy producer should be equivalent to the costs that they are unable to recover on the electricity pool market where they compete with non-renewable technologies. This economic regime seeks to allow a “well-run and efficient enterprise” to recover the costs of building and running a plant, plus a reasonable return on investment (project investment rate of return). Some of the Company´s assets in Spain are receiving a remuneration based on a 7.09% reasonable rate of return until December 31, 2025 while others are receiving a remuneration based on a 7.398% reasonable rate of return until December 31, 2031. 2.5. 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, Atlantica recognizes an allowance for ECL for loans and accounts receivable which 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. 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 as financial income within the consolidated statement of profit or loss. 2.6. Derivative financial instruments and hedging activities Derivatives are recognized at fair value in the statement of financial position. The Company maintains both derivatives designated as hedging instruments in hedging relationships, and derivatives to which hedge accounting is not applied. 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. The Company analyses on each date if all these requirements are met: - there is an economic relationship between the hedged item and the hedging instrument; - the effect of credit risk does not dominate the value changes that result from that economic relationship; and - the hedge ratio of the hedging relationship is the same as that resulting from the quantity of the hedged item that the Company actually hedges and the quantity of the hedging instrument that the Company uses to hedge that quantity of hedged item. Ineffectiveness is measured following the accumulated dollar offset method. In all cases, current Company´s hedging relationships are considered cash flow hedges. Under this model, 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 profit and loss statement as it occurs. When interest rate options are designated as hedging instruments, the time value is excluded from the hedging instrument as permitted by IFRS 9. Changes in the effective portion of the intrinsic 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. Changes in options time value is recorded as cost of hedging. More precisely, considering that the hedged items are, in all cases, time period hedged item, changes in time value is recognized in other comprehensive income to the extent that it relates to the hedged item. The time value at the date of designation of the option as a hedging instrument, to the extent that it relates to the hedged item, is amortized on a systematic and rational basis over the period during which the hedge adjustment for the option’s intrinsic value could affect profit or loss. 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 profit and loss 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 profit and loss statement. Any change in fair value of derivatives instruments to which hedge accounting is not applied is directly recorded in the profit and loss statement. 2.7. 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, 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 profit and loss 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 consist in valuing separately the swap part of the contract and 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.

Financial risk management

Financial risk management	12 Months Ended
	Dec. 31, 2023
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 Management and Finance Departments, which are responsible for identifying and evaluating financial risks quantifying them by project, region and company, in accordance with mandatory internal management rules. The internal management rules provide written policies for the management of overall risk, as well as for specific areas. The internal management policies of the Company also define the use of hedging instruments and derivatives and the investment of excess cash. 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 EURIBOR and SOFR. 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 of December 31, 2023, approximately 92% of the Project debt of the Company and approximately 94% of the Corporate debt either has fixed interest rates or has been hedged with swaps or caps. The Revolving Credit Facility of the Company has variable interest rates and is not hedged (Note 15). 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 and SOFR, which represent the reference interest rate for most of the debt of the Company. In the event that EURIBOR and SOFR had risen by 25 basis points as of December 31, 2023, with the rest of the variables remaining constant, the effect in the consolidated profit and loss statement would have been a loss of $0.7 million (a loss of $1.3 million in 2022 and a loss of $2.5 million in 2021) and a gain in hedging reserves of $17.6 million ($18.4 million in 2022 and $22.4 million in 2021). The gain 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, 2023 and 2022, is provided in Note 10. - 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 typically 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, to further mitigate this exposure, 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 solar assets in Europe. The net Euro exposure is 100% hedged for the coming 12 months and 75% for the following 12 months on a rolling basis. Although the Company hedges cash-flows in euros, fluctuations in the value of the euro in relation to the U.S. dollar may affect its operating results. For example, revenue in euro-denominated companies could decrease when translated to U.S. dollars at the average foreign exchange rate solely due to a decrease in the average foreign exchange rate, in spite of revenue in the original currency being stable. Fluctuations in the value of the South African rand, the Colombian peso and the Uruguayan peso with respect to the U.S. dollar may also affect the operating results of the Company. Apart from the impact of these translation differences, the exposure of the profit and loss statement of the Company to fluctuations of foreign currencies is limited, as the financing of projects is typically denominated in the same currency as that of the contracted revenue agreement. b) Credit risk The Company considers that it has a limited credit risk with clients as revenues primarily derive from power purchase agreements with electric utilities and state-owned entities. In addition, the diversification by geography and business sector helps to diversify credit risk exposure by diluting the exposure of the Company to a single client. c) Liquidity risk Atlantica’s liquidity and financing policy is intended to ensure that the Company maintains sufficient funds to meet its 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. In addition, the Company maintains a periodic communication with its lenders and regular monitoring of debt covenants and minimum ratios. Corporate and Project debt repayment schedules are disclosed in Note 15 and 16, respectively.

Financial information by segmen

Financial information by segment	12 Months Ended
	Dec. 31, 2023
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 and EMEA. In addition, based on the type of business, as of December 31, 2023, the Company had the following business sectors: Renewable energy, Efficient natural gas and heat, Transmission lines and Water. Atlantica’s Chief Operating Decision Maker (CODM), which is the CEO, assesses the performance and assignment of resources according to the identified operating segments. The CODM considers the revenue as a measure of the business activity and the Adjusted EBITDA as a measure of the performance of each segment. Adjusted EBITDA is calculated as profit/(loss) for the year attributable to the parent company, after adding back loss/(profit) attributable to non-controlling interest, income tax expense, financial expense (net), depreciation, amortization and impairment charges of entities included in these Consolidated Financial Statements and depreciation and amortization, financial expense and income tax expense of unconsolidated affiliates (pro rata of Atlantica’s equity ownership). In order to assess performance of the business, the CODM receives reports of each reportable segment using revenue and 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 year ended December 31, 2023, Atlantica had four customers with revenues representing more than 10% of total revenue, three in the renewable energy and one in the efficient natural gas and heat business sectors. In the year ended December 31, 2022, Atlantica had three customers with revenues representing more than 10% of the total revenue, two in the renewable energy and one in the efficient natural gas and heat business sectors. a) The following tables show Revenues and Adjusted EBITDA by operating segments and business sectors for the years 2023, 2022 and 2021: Revenue Adjusted EBITDA For the year ended December 31, For the year ended December 31, Geography 2023 2022 2021 2023 2022 2021 North America 424,888 405,047 395,775 319,264 309,988 311,803 South America 188,127 166,441 154,985 146,722 126,551 119,547 EMEA 486,879 530,541 660,989 328,936 360,561 393,038 Total 1,099,894 1,102,029 1,211,749 794,922 797,100 824,388 Revenue Adjusted EBITDA For the year ended December 31, For the year ended December 31, Business sectors 2023 2022 2021 2023 2022 2021 Renewable energy 802,756 821,377 928,525 575,704 588,016 602,583 Efficient natural gas & heat 118,417 113,591 123,692 87,393 84,560 99,935 Transmission lines 123,476 113,273 105,680 96,043 88,010 83,635 Water 55,245 53,788 53,852 35,782 36,514 38,235 Total 1,099,894 1,102,029 1,211,749 794,922 797,100 824,388 The reconciliation of segment Adjusted EBITDA with the profit/(loss) attributable to the parent company is as follows: For the year ended December 31, 2023 2022 2021 Profit/(loss) attributable to the Company 43,380 (5,443 ) (30,080 ) Profit/(loss) attributable to non-controlling interest (6,932 ) 3,356 19,162 Income tax expense/(income) 790 (9,689 ) 36,220 Financial expense, net 317,974 310,934 340,892 Depreciation, amortization, and impairment charges 418,271 473,638 439,441 Depreciation and amortization, financial expense and income tax expense of unconsolidated affiliates (pro rata of Atlantica’s equity ownership) 21,439 24,304 18,753 Total segment Adjusted EBITDA 794,922 797,100 824,388 b) The assets and liabilities by geography and business sector at the end of 2023 and 2022 are as follows: Assets and liabilities by geography as of December 31, 2023: North America South America EMEA Balance as of December 31, 2023 Assets allocated Contracted concessional, PP&E and other intangible assets 3,063,019 1,184,599 2,956,649 7,204,267 Investments carried under the equity method 177,260 9,178 43,869 230,307 Other current financial assets 110,016 30,803 48,067 188,886 Cash and cash equivalents (project companies) 137,480 121,945 155,551 414,976 Assets held for sale 28,642 - - 28,642 Subtotal allocated 3,516,417 1,346,525 3,204,136 8,067,078 Unallocated assets Other non-current assets 297,577 Other current assets (including cash and cash equivalents at holding company level) 349,678 Subtotal unallocated 647,255 Total assets 8,714,333 North America South America EMEA Balance as of December 31, 2023 Liabilities allocated Long-term and short-term project debt 1,629,278 808,481 1,881,501 4,319,260 Grants and other liabilities 945,888 36,307 251,613 1,233,808 Subtotal allocated 2,575,166 844,788 2,133,114 5,553,068 Unallocated liabilities Long-term and short-term corporate debt 1,084,838 Other non-current liabilities 301,245 Other current liabilities 186,373 Subtotal unallocated 1,572,456 Total liabilities 7,125,524 Equity unallocated 1,588,809 Total liabilities and equity unallocated 3,161,265 Total liabilities and equity 8,714,333 Assets and liabilities by geography as of December 31, 2022: North America South America EMEA Balance as of December 31, 2022 Assets allocated Contracted concessional, PP&E and other intangible assets 3,167,490 1,241,879 3,073,889 7,483,259 Investments carried under the equity method 210,704 4,450 44,878 260,031 Other current financial assets 118,385 31,136 46,373 195,893 Cash and cash equivalents (project companies) 187,568 85,697 266,557 539,822 Subtotal allocated 3,684,147 1,363,162 3,431,697 8,479,005 Unallocated assets Other non-current assets 325,893 Other current assets (including cash and cash equivalents at holding company level) 296,013 Subtotal unallocated 621,906 Total assets 9,100,911 North America South America EMEA Balance as of December 31, 2022 Liabilities allocated Long-term and short-term project debt 1,713,125 841,906 1,998,021 4,553,052 Grants and other liabilities 994,874 25,031 232,608 1,252,513 Subtotal allocated 2,707,999 866,937 2,230,629 5,805,565 Unallocated liabilities Long-term and short-term corporate debt 1,017,200 Other non-current liabilities 313,328 Other current liabilities 175,771 Subtotal unallocated 1,506,299 Total liabilities 7,311,864 Equity unallocated 1,789,047 Total liabilities and equity unallocated 3,295,346 Total liabilities and equity 9,100,911 Assets and liabilities by business sectors as of December 31, 2023: Renewable energy Efficient natural gas & heat Transmission lines Water Balance as of December 31, 2023 Assets allocated Contracted concessional, PP&E and other intangible assets 5,798,818 460,766 777,360 167,323 7,204,267 Investments carried under the equity method 189,672 - - 40,635 230,307 Other current financial assets 10,866 103,907 30,746 43,367 188,886 Cash and cash equivalents (project companies) 299,987 35,098 58,004 21,887 414,976 Assets held for sale - 28,642 - - 28,642 Subtotal allocated 6,299,343 628,413 866,110 273,212 8,067,078 Unallocated assets Other non-current assets 297,577 Other current assets (including cash and cash equivalents at holding company level) 349,678 Subtotal unallocated 647,255 Total assets 8,714,333 Renewable energy Efficient natural gas & heat Transmission lines Water Balance as of December 31, 2023 Liabilities allocated Long-term and short-term project debt 3,280,618 401,460 560,906 76,276 4,319,260 Grants and other liabilities 1,185,487 32,916 12,884 2,521 1,233,808 Subtotal allocated 4,466,105 434,376 573,790 78,797 5,553,068 Unallocated liabilities Long-term and short-term corporate debt 1,084,838 Other non-current liabilities 301,245 Other current liabilities 186,373 Subtotal unallocated 1,572,456 Total liabilities 7,125,524 Equity unallocated 1,588,809 Total liabilities and equity unallocated 3,161,265 Total liabilities and equity 8,714,333 Assets and liabilities by business sectors as of December 31, 2022: Renewable energy Efficient natural gas & heat Transmission lines Water Balance as of December 31, 2022 Assets allocated Contracted concessional, PP&E and other intangible assets 6,035,091 485,431 800,067 162,670 7,483,259 Investments carried under the equity method 207,870 10,034 - 42,128 260,031 Other current financial assets 6,706 116,366 30,582 42,240 195,893 Cash and cash equivalents (project companies) 392,577 73,673 48,073 25,498 539,822 Subtotal allocated 6,642,244 685,504 878,722 272,536 8,479,005 Unallocated assets Other non-current assets 325,893 Other current assets (including cash and cash equivalents at holding company level) 296,013 Subtotal unallocated 621,906 Total assets 9,100,911 Renewable energy Efficient natural gas & heat Transmission lines Water Balance as of December 31, 2022 Liabilities allocated Long-term and short-term project debt 3,442,625 440,999 582,689 86,739 4,553,052 Grants and other liabilities 1,211,878 32,138 6,040 2,457 1,252,513 Subtotal allocated 4,654,503 473,137 588,729 89,196 5,805,565 Unallocated liabilities Long-term and short-term corporate debt 1,017,200 Other non-current liabilities 313,328 Other current liabilities 175,771 Subtotal unallocated 1,506,299 Total liabilities 7,311,864 Equity unallocated 1,789,047 Total liabilities and equity unallocated 3,295,346 Total liabilities and equity 9,100,911 c) The amount of depreciation, amortization and impairment charges recognized for the years ended December 31, 2023, 2022 and 2021 are as follows: For the year ended December 31, Depreciation, amortization and impairment by geography 2023 2022 2021 North America (125,725 ) (182,159 ) (152,946 ) South America (77,855 ) (80,039 ) (57,214 ) EMEA (214,691 ) (211,440 ) (229,281 ) Total (418,271 ) (473,638 ) (439,441 ) For the year ended December 31, Depreciation, amortization and impairment by business sectors 2023 2022 2021 Renewable energy (398,394 ) (434,042 ) (432,138 ) Efficient natural gas & heat 9,365 (5,430 ) 23,910 Transmission lines (29,331 ) (32,466 ) (31,286 ) Water 89 (1,700 ) 73 Total (418,271 ) (473,638 ) (439,441 )

Business combinations

Business combinations	12 Months Ended
	Dec. 31, 2023
Business combinations [Abstract]
Business combinations	Note 5.- Business combinations For the year ended December 31, 2023 On March 1, 2023, the Company completed the process of transitioning the O&M services for the assets in Spain where Abengoa was still the supplier to an Atlantica’ subsidiary. This acquisition has been accounted for in these Consolidated Financial Statements in accordance with IFRS 3, Business Combinations. The O&M services are included within the Renewable energy sector and the EMEA geography. The fair value of assets and liabilities consolidated at the effective acquisition date is shown in the following table: Business combinations for the year ended December 31, 2023 Property, plant and equipment under IAS 16 (Note 6) 1,565 Intangible assets under IAS 38 (Note 6) 4,486 Inventories 1,646 Other current and non-current liabilities (5,494 ) Total net assets acquired at fair value 2,203 Asset acquisition – purchase price (2,203 ) Net result of business combinations - The purchase price equals the fair value of the net assets acquired. The allocation of the purchase price is provisional as of December 31, 2023, and amounts indicated above 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, 2023. The measurement period will not exceed one year from the acquisition date. The amount of revenue contributed by the acquisitions during 2023 to the Consolidated Financial Statements of the Company is nil For the year ended December 31, 2022 On January 17, 2022, the Company closed the acquisition of Chile TL4, a 63-mile transmission line and 2 substations in Chile for a total equity investment of $38.4 million. Atlantica has control over Chile TL4 under IFRS 10, Consolidated Financial Statements. The acquisition of Chile TL4 had been accounted for in these Consolidated Financial Statements in accordance with IFRS 3, Business Combinations. Chile TL4 is included within the Transmission Lines sector and the South America geography. On April 4, 2022, the Company closed the acquisition of Italy PV 4, a 3.6 MW solar portfolio in Italy for a total equity investment of $3.7 million. Atlantica has control over Italy PV 4 under IFRS 10, Consolidated Financial Statements. The acquisition of Italy PV 4 had been accounted for in these Consolidated Financial Statements in accordance with IFRS 3, Business Combinations. Italy PV4 is included within the Renewable energy sector and the EMEA geography. On September 2, 2022 the Company closed the acquisition of Chile PV 3, a 73 MW solar PV plant through its renewable energy platform in Chile for a total equity investment of $7.7 million. Atlantica has control over Chile PV 3 under IFRS 10, Consolidated Financial Statements. The acquisition of Chile PV 3 had been accounted for in these Consolidated Financial Statements in accordance with IFRS 3, Business Combinations, showing 65% of non-controlling interests. Chile PV 3 is included within the Renewable energy sector and the South America geography. The fair value of assets and liabilities consolidated at the effective acquisition date is shown in aggregate on the basis that they are individually not significant in the following table: Business combinations for the year ended December 31, 2022 Property, plant and equipment under IAS 16 (Note 6) 58,002 Rights of use under IFRS 16 (Lessee) or intangible assets under IAS 38 (Note 6) 16,993 Cash & cash equivalents 1,057 Other current assets 8,283 Non-current Project debt (Note 16) (1,301 ) Current Project debt (Note 16) (148 ) Other current and non-current liabilities (18,919 ) Non-controlling interest (14,300 ) Total net assets acquired at fair value 49,667 Asset acquisition – purchase price paid (49,667 ) Net result of business combinations - The purchase price equals the fair value of the net assets acquired. The amount of revenue contributed by the acquisitions performed during 2022 to the Consolidated Financial Statements of the Company for the year 2022 was $6.2 million, and the amount of profit after tax was $1.7 million. Had the acquisitions been consolidated from January 1, 2022, the consolidated statement of comprehensive income would have included additional revenue of $4.8 million and additional profit after tax of $1.7 million. In January, April and September 2023, the provisional period for the purchase price allocation of Chile TL 4, Italy PV 4 and Chile PV 3, respectively, closed, and did not result in significant adjustments to the initial amounts recognized.

Contracted concessional, PP&E a

Contracted concessional, PP&E and other intangible assets	12 Months Ended
	Dec. 31, 2023
Contracted concessional, PP&E and other intangible assets [Abstract]
Contracted concessional, PP&E and other intangible assets	Note 6.- Contracted concessional, PP&E and other intangible assets The Company has assets recorded as intangible or financial assets in accordance with IFRIC 12, property plant and equipment in accordance with IAS 16 and right of use assets under IFRS 16 or intangible assets under IAS 38. For further details on the application of IFRIC 12 to assets of the Company, see Appendix III. The following table shows the movements of assets included in the heading “Contracted Concessional, PP&E and other intangible assets” for 2023: Financial assets under IFRIC 12 Financial assets under IFRS 16 (Lessor) Intangible assets under IFRIC 12 Right of use assets under IFRS 16 (Lessee) and intangible assets under IAS 38 Property, plant and equipment under IAS 16 Cost Land Technical installations Total assets Total as of January 1, 2023 818,170 2,787 8,845,151 120,308 137,767 938,799 10,862,982 Additions - - 27,531 4,409 62 50,805 82,807 Subtractions - - - (644 ) - (5,487 ) (6,131 ) Business combinations (Note 5) - - - 4,486 - 1,565 6,051 Currency translation differences 5,025 (132 ) 84,060 4,756 1,515 19,847 115,071 Reclassification and other movements (38,016 ) - 348 17,632 - (11,537 ) (31,573 ) Total cost, as of December 31, 2023 785,179 2,655 8,957,090 150,947 139,344 993,992 11,029,207 Depreciation, amortization and impairment Financial assets under IFRIC 12 Financial assets under IFRS 16 (Lessor) Intangible assets under IFRIC 12 Right of use assets under IFRS 16 (Lessee) and intangible assets under IAS 38 Property, plant and equipment under IAS 16 Land Technical installations Total assets Total as of January 1, 2023 (69,557 ) - (3,088,778 ) (26,783 ) - (194,605 ) (3,379,723 ) Additions - - (358,602 ) (11,869 ) - (41,924 ) (412,395 ) Impairment charges - - - - - (16,079 ) (16,079 ) Reversal of impairment 13,378 - - - - - 13,378 Currency translation differences (199 ) - (32,084 ) (533 ) - (4,511 ) (37,327 ) Reclassification and other movements - - - 372 - 6,834 7,206 Total depreciation, amortization and impairment, as of December 31, 2023 (56,378 ) - (3,479,464 ) (38,813 ) - (250,285 ) (3,824,940 ) Total net book value, as of December 31, 2023 728,801 2,655 5,477,626 112,134 139,344 743,707 7,204,267 The increase in the contracted concessional assets cost is primarily due to the higher value of the Euro denominated assets since the exchange rate of the Euro increased against the U.S. dollar since December 31, 2022 and to the investments for the year in operating concessional assets and assets under development or construction. The increase in accumulated depreciation, amortization and impairment is primarily due to the amortization charge for the year and the impairment registered in Chile PV1 (see further explanation below). The decrease included in “Reclassification and other movement” is mainly due to the reclassification from the long to the short term of the current portion of the contracted concessional financial assets. The following table shows the movements of assets included in the heading “Contracted Concessional, PP&E and other intangible assets” for 2022: Financial assets under IFRIC 12 Financial assets under IFRS 16 (Lessor) Intangible assets under IFRIC 12 Right of use assets under IFRS 16 (Lessee) and intangible assets under IAS 38 Property, plant and equipment under IAS 16 Cost Land Technical installations Total assets Total as of January 1, 2022 874,525 2,843 9,068,646 100,109 137,037 835,975 11,019,135 Additions - - 32,941 5,637 3,532 75,182 117,292 Subtractions - (57 ) (499 ) (1,510 ) - (8,495 ) (10,561 ) Business combinations (Note 5) - - - 16,993 - 58,002 74,995 Currency translation differences 1,760 1 (258,735 ) (4,446 ) (2,802 ) (21,090 ) (285,312 ) Reclassification and other movements (58,115 ) - 2,798 3,525 - (775 ) (52,567 ) Total cost, as of December 31, 2022 818,170 2,787 8,845,151 120,308 137,767 938,799 10,862,982 Financial assets under IFRIC 12 Financial assets under IFRS 16 (Lessor) Intangible assets under IFRIC 12 Right of use assets under IFRS 16 (Lessee) and intangible assets under IAS 38 Property, plant and equipment under IAS 16 Depreciation, amortization and impairment Land Technical installations Total assets Total as of January 1, 2022 (62,889 ) - (2,769,345 ) (21,578 ) - (143,755 ) (2,997,567 ) Additions (6,560 ) - (357,401 ) (6,865 ) - (43,414 ) (414,240 ) Impairment charges (41,238 ) - - (20,446 ) (61,684 ) Reversal of impairment - - - 859 - 7,643 8,502 Currency translation differences (108 ) - 79,206 801 - 5,367 85,266 Total depreciation, amortization and impairment, as of December 31, 2022 (69,557 ) - (3,088,778 ) (26,783 ) - (194,605 ) (3,379,723 ) Total net book value, as of December 31, 2022 748,613 2,787 5,756,373 93,525 137,767 744,194 7,483,259 The decrease in the contracted concessional assets cost was primarily due to the lower value of the Euro denominated assets since the exchange rate of the Euro decreased against the U.S. dollar since December 31, 2021, that more than offset the increase resulting from business combinations and the additions for the year that primarily corresponded to investments in operating concessional assets and assets under development or construction. The increase in accumulated depreciation, amortization and impairment was primarily due to the amortization charge for the year and the impairment registered in Solana, Chile PV1 and Chile PV2 (see further explanation below). The decrease included in “Reclassification and other movement” was mainly due to the reclassification from the long to the short term of the current portion of the contracted concessional financial assets. Solana triggering event of impairment Considering the continued delays in the works and replacements that the Company was carrying out in the storage system at Solana and their impact on production in 2022, as well as an increase in the discount rate, the Company identified an impairment triggering event as of December 31, 2022, in accordance with IAS 36, Impairment of assets. As a result, an impairment test was performed using historical level of output (generation), which resulted in the recording of an impairment loss of $41 million in 2022. The impairment was recorded within the line “Depreciation, amortization and impairment charges” of the consolidated profit and loss statement, decreasing the amount of intangible assets under IFRIC 12 pertaining to the Renewable energy sector and the North America geography. The recoverable amount considered was the value in use and amounted to $881 million for Solana, as of December 31, 2022. No triggering event of impairment was identified in Solana as of December 31, 2023. Chile PV1 and Chile PV2 triggering event of impairment Considering that expected electricity prices in Chile over the remaining useful life of Chile PV1 and Chile PV2 further decreased in 2023, the Company identified an impairment triggering event as of December 31, 2023, in accordance with IAS 36, Impairment of assets. As a result, an impairment test has been performed which resulted in the recording of an impairment loss of $16 million for Chile PV1 ($8 million in 2022) and no impairment for Chile PV2 ($12 million in 2022). The impairment has been recorded within the line “Depreciation, amortization and impairment charges” of the consolidated profit and loss statement, decreasing the amount of Property, plant and equipment under IAS 16 pertaining to the Renewable energy sector and the South America geography. The recoverable amount considered is the value in use and amounts to $40 million for Chile PV1 and $22 million for Chile PV2 as of December 31, 2023 ($58 million and $22 million respectively as of December 31,2022). A specific discount rate has been used in each year considering changes in the debt/equity leverage ratio over the useful life of the projects, resulting in the use of a range of pre-tax discount rate between 7.7% and 8.7% for Chile PV1 and 7.7% and 9.8% for Chile PV2 (between 7.5% and 8.4% for Chile PV1 and between 7.5% and 8.3% for Chile PV2 in 2022). The value of the net assets contributed by Chile PV 1 and PV2 to these Consolidated Financial Statements, excluding non-controlling interest, is close to nil 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 electricity prices over the entire remaining useful life of these projects would generate an additional total impairment of approximately $3 million. An increase of 50 basis points in the discount rate would lead to an additional total impairment of approximately $2 million. The Company did not identify any other triggering event of impairment of its contracted concessional, PP&E and other intangible assets as of December 31, 2023 and 2022. Expected credit losses The impairment provision based on the expected credit losses on contracted concessional financial assets, calculated in accordance with IFRS 9, Financial instruments, decreased by $13 million in the year ended December 31, 2023, primarily in ACT following an improvement of its client’s credit risk metrics (increased by $7 million in the year ended December 31, 2022, primarily in ACT).

Investments carried under the e

Investments carried under the equity method	12 Months Ended
	Dec. 31, 2023
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 and joint ventures for 2023 and 2022: Investments in associates and joint ventures 2023 2022 Initial balance 260,031 294,581 Share of profit 13,207 21,465 Distributions (38,780 ) (57,537 ) New entities carried under the equity method 4,439 4,901 Investment in associates classified as held for sale during the year (Note 8) (10,194 ) - Others (incl. currency translation differences) 1,604 (3,379 ) Final balance 230,307 260,031 On October 30, 2023, the conditions to classify the investment in Pemcorp as held for sale were met. As a consequence, the book value of the equity investment held by Atlantica in Pemcorp of US$ 10.2 million is classified as held for sale in these Consolidated Financial Statements from that date (Note 8). Other variations in investments carried under the equity method in 2023 are primarily due to: - Distributions: In 2023, the Company received distributions from Amherst Island Partnership for $17.3 million ($20.9 million in 2022), distributions from Vento II for $16.1 million ($32.6 million in 2022) and distributions from Honaine for $5.4 million ($4.0 million in 2022). A significant portion of the distributions received from Amherst Island Partnership are distributed by the Company to Algonquin Power Co. (Note 14). - New entities carried under the equity method On March 1, 2023, Atlantica sold part of its equity interest in the Colombian portfolio of renewable energy entities to a partner, which now holds a 50% equity interest. The Colombian portfolio of renewable energy entities includes the following entities: Atlantica – HIC Renovables S.A.S., SJ Renovables Sun 1 S.A.S., AC Renovables Sol 1 S.A.S., SJ Renovables Wind 1 S.A.S., PA Renovables Sol 1 S.A.S. and Atlantica Hidro Colombia S.A.S. Atlantica and the partner hold 50% of the shares each and have joint control over these entities in accordance with IFRS 11, Joint arrangements. As a result, the subsidiaries, which were previously fully consolidated showing 30% of non-controlling interest, are now recorded as an investment in joint ventures under the equity method in these Consolidated Financial Statements in accordance with IAS 28, Investments in Associates and Joint Ventures. The carrying amount of the non-controlling interests in these entities was derecognized at the date control was lost by Atlantica. Further to the sale of part of its equity interest, Atlantica recorded a gain of $4.6 million as Other operating income in the year 2023 (Note 22). - Share of profit The profit decreases in 2023 compared to 2022 primarily due to a lower profit at Vento II resulting from lower production and a lower price at Lone Star II after its PPA expired in January 2023. In November 2022, Atlantica closed the acquisition of a 49% interest, with joint control, in Chile PMGD, an 80 MW portfolio of solar PV assets in Chile, which is currently under construction (Note 1). Chile PMGD is accounted for in these Consolidated Financial Statements using the equity method as per IAS 28 – Investments in Associates and Joint ventures. 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 2023 and 2022 for the entities carried under the equity method: Company % Shares of the Company Non- current assets Current assets Project Other non- current liabilities Other current liabilities Revenue Operating profit/ (loss) Net profit/ (loss) Investment under the equity method 2007 Vento II, LLC (1) 49.00 411,099 25,777 - 56,508 11,285 82,849 21,024 19,752 175,351 Windlectric Inc (2) 30.00 284,618 30,884 - 159,406 77,389 21,514 8,515 (2,157 ) 1,910 Myah Bahr Honaine, S.P.A.(3) 25.50 155,338 63,451 35,569 20,240 4,653 56,172 34,576 27,084 40,635 Akuo Atlantica PMGD Holding S.P.A. (4) 49.00 56,214 7,210 24,214 18,090 13,739 192 (75 ) (83 ) 4,409 Colombian portfolio of renewable energy entities 50.00 9,092 4,970 - 9,872 956 - (587 ) 1,920 4,754 Pectonex, R.F. Proprietary Limited 50.00 1,749 - - 1 - - (149 ) (149 ) 1,337 Evacuación Valdecaballeros, S.L. 57.16 15,839 1,005 - 13,538 159 878 (59 ) (91 ) 807 Atlantica SailH2, S.L. 50.00 499 333 - - 165 - - - 653 Evacuación Villanueva del Rey, S.L. 40.02 2,218 83 - 1,308 181 - 63 - - Liberty Infraestructuras S.L. 20.00 81 357 - - - 4 (46 ) (68 ) - Fontanil Solar, S.L.U. 25.00 328 13 - 354 7 - (1 ) (18 ) 229 Murum Solar, S.L.U. 25.00 266 35 - 314 - - (1 ) (15 ) 222 As of December 31, 2023 230,307 Company % Shares of the Company Non- current assets Current assets Project debt Other non- current liabilities Other current liabilities Revenue Operating profit/ (loss) Net profit/ (loss) Investment under the equity method 2007 Vento II, LLC (1) 49.00 435,029 14,198 - 57,596 11,515 103,362 42,662 40,992 181,735 Windlectric Inc (2) 30.00 278,504 3,338 - 167,519 43,227 24,996 10,560 (15 ) 18,935 Myah Bahr Honaine, S.P.A.(3) 25.50 150,623 66,246 43,579 18,902 4,257 55,267 33,374 26,768 42,128 Akuo Atlantica PMGD Holding S.P.A. (4) 49.00 14,814 2,828 - 8,755 326 - - (348 ) 4,450 Pemcorp SAPI de CV (5) 30.00 138,931 112,352 159,382 90,474 4,328 45,625 1,680 (17,747 ) 10,034 Pectonex, R.F. Proprietary Limited 50.00 2,045 - - - 1 - (168 ) (168 ) 1,411 Evacuación Valdecaballeros, S.L. 57.16 15,551 1,020 - 13,635 232 860 (60 ) (89 ) 858 Evacuación Villanueva del Rey, S.L. 40.02 2,317 12 - 1,386 111 - 57 - - Liberty Infraestructuras S.L. 20.00 93 283 - - 37 - - (22 ) 29 Fontanil Solar, S.L.U. 25.00 117 7 - 99 24 - (1 ) (2 ) 229 Murum Solar, S.L.U. 25.00 228 8 - 180 59 - (1 ) (5 ) 222 As of December 31, 2022 260,031 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. (1) 2007 Vento II, LLC, is the holding company of a 596 MW portfolio of wind assets in the U.S., 49% owned by Atlantica since June 16, 2021, and accounted for under the equity method in these Consolidated Financial Statements. Share of profit of 2007 Vento II, LLC . included in these Consolidated Financial Statements amounts to $9.7 million in 2023 and $20.1 million in 2022. (2) Windlectric Inc., the project entity, is 100% owned by Amherst Island Partnership which is accounted for under the equity method in these Consolidated Financial Statements . (3) 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. Geida Tlemcen, S.L. is 50% owned by Atlantica. Share of profit of Myah Bahr Honaine S.P.A. included in these Consolidated Financial Statements amounts to $6.9 million in 2023 and $6.8 million in 2022. (4) Akuo Atlantica PMGD Holding S.P.A. is the holding company of a 80 MW portfolio of solar PV assets in Chile, which is currently under construction, 49% owned by Atlantica, with joint control since November 2022 and accounted for under the equity method in these Consolidated Financial Statement s. (5) Pemcorp SAPI de CV, Monterrey´s project entity, is 100% owned by Arroyo Netherlands II B.V., which was accounted for under the equity method in the Consolidated Financial Statements as of December 31, 2022. Arroyo Netherlands II B.V. is 30% owned by Atlantica. The investment held by Atlantica in Pemcorp has been classified as held for sale in these Consolidated Financial (Note 8). Share of profit of Pemcorp SAPI de CV included in these Consolidated Financial Statements amounts to a $0.2 million profit in 2023 and a $5.3 million loss in 2022.

Assets held for sale

Assets held for sale	12 Months Ended
	Dec. 31, 2023
Assets held for sale [Abstract]
Assets held for sale	Note 8.- Assets held for sale In 2023, the Atlantica´s partner in Monterrey initiated a process to sell its 70% stake in the asset. Such process is well advanced and, as part of it, Atlantica intends to sell its interest as well under the same terms. The net proceeds to Atlantica are expected to be in the range of $45 to $52 million, after tax. The transaction is subject to certain conditions precedent and final transaction closing and is expected to be completed in 2024. On October 30, 2023, the conditions to classify the loan granted by Atlantica to Arroyo II and the investment in Pemcorp as held for sale were met. As a consequence, the book value of the equity investment held by Atlantica in Pemcorp of $10.2 million (Note 7) and the loan granted by Atlantica to Arroyo II of $18.5 million (Note 11) as of December 31, 2023, were classified as held for sale in these Consolidated Financial Statements since that date. Share of profit in Pemcorp is not reflected since October 30, 2023, in these Consolidated Financial Statements according to IFRS 5 Non-current Assets Held for Sale and Discontinued Operations. The loan granted by Atlantica to Arroyo II, shall continue to be measured in accordance with IFRS 9, at amortized cost, and the interests accrued classified as financial income in the profit and loss statement until closing of the sale occurs.

Financial instruments by catego

Financial instruments by category	12 Months Ended
	Dec. 31, 2023
Financial instruments by category [Abstract]
Financial instruments by category	Note 9.- Financial instruments by category Financial instruments, in addition to financial assets included within Contracted concessional, PP&E and other intangible assets disclosed in Note 6, 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, 2023 and 2022 are as follows: Notes Amortized cost Fair value through other comprehensive income Fair value through profit or loss Balance as of December 31, 2023 Derivative assets 10 - - 61,697 61,697 Investment in Ten West Link - 11,719 - 11,719 Financial assets under IFRIC 12 (short-term portion) (*) 177,407 - - 177,407 Trade and other receivables 12 286,483 - - 286,483 Cash and cash equivalents 13 448,301 - - 448,301 Other financial assets 74,645 - - 74,645 Total financial assets 986,836 11,719 61,697 1,060,252 Corporate debt (**) 15 1,084,838 - - 1,084,838 Project debt (**) 16 4,319,260 - - 4,319,260 Lease liabilities (non-current portion) 17 82,366 - - 82,366 Trade and other current liabilities 18 141,713 - - 141,713 Derivative liabilities 10 - - 29,957 29,957 Total financial liabilities 5,628,177 - 29,957 5,658,134 Notes Amortized cost Fair value through other comprehensive income Fair value through profit or loss Balance as of December 31, 2022 Derivative assets 10 - - 97,381 97,381 Investment in Ten West Link - 15,959 - 15,959 Financial assets under IFRIC 12 (short-term portion) (*) 186,841 - - 186,841 Trade and other receivables 12 200,334 - - 200,334 Cash and cash equivalents 13 600,990 - - 600,990 Other financial assets 71,949 - - 71,949 Total financial assets 1,060,114 15,959 97,381 1,173,454 Corporate debt (**) 15 1,017,200 - - 1,017,200 Project debt (**) 16 4,553,052 - - 4,553,052 Lease liabilities (non-current portion) 17 63,076 - - 63,076 Trade and other current liabilities 18 140,230 - - 140,230 Derivative liabilities 10 - - 16,847 16,847 Total financial liabilities 5,773,558 - 16,847 5,790,405 (*) The long-term portion of Financial assets under IFRIC 12 is included within the line Contracted concessional, PP&E and other intangible assets (Note 6). (**) The percentage of Corporate and Project debt at fixed interest or hedged is 94% and 92% respectively as of December 31, 2023 (96% and 92% respectively as of December 31, 2022). Other financial assets as of December 31, 2023 and December 31, 2022 include, among others, loans to entities accounted for under the equity method in these Consolidated Financial Statements Investment in Ten West Link is a 12.5% interest in a 114-mile transmission line in the U.S., currently under construction.

Derivative financial instrument

Derivative financial instruments	12 Months Ended
	Dec. 31, 2023
Derivative financial instruments [Abstract]
Derivative financial instruments	Note 10.- Derivative financial instruments The breakdowns of the fair value amount of the derivative financial instruments as of December 31, 2023 and 2022 are as follows: Balance as of December 31, 2023 Balance as of December 31, 2022 Assets Liabilities Assets Liabilities Interest rate cash flow hedge 60,102 29,163 94,192 12,159 Foreign exchange derivatives instruments 1,595 - 3,189 - Notes conversion option (Note 15) - 794 - 4,688 Total 61,697 29,957 97,381 16,847 The derivatives are primarily interest rate cash-flow hedges. Almost all of them are classified as non-current assets or non-current liabilities, as they hedge long-term financing agreements. As stated in Note 3 to these Consolidated Financial Statements, the general policy is to hedge variable interest rates of financing agreements using two types of hedging derivatives: - Interest rate swaps under which the Company receives the floating leg and pays the fixed leg; and - Purchased call options (cap), in exchange of a premium to fix the maximum interest rate cost. 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. As of December 31, 2023, approximately 92% of the Project debt and 94% of the Corporate debt of the Company either has fixed interest rates or has been hedged with swaps or caps (92% and 96%, respectively, as of December 31, 2022). The table below shows a breakdown of the maturities of notional amounts of interest rate cash flow hedge derivatives as of December 31, 2023 and 2022. Notionals Balance as of December 31, 2023 Balance as of December 31, 2022 Assets Liabilities Assets Liabilities Up to 1 year 248,898 43,013 245,147 47,029 Between 1 and 2 years 279,215 95,701 310,393 102,476 Between 2 and 3 years 314,644 104,848 217,498 112,855 Subsequent years 523,564 264,563 659,186 280,016 Total 1,366,321 508,125 1,432,224 542,376 The table below shows a breakdown of the maturity of the fair values of interest rate cash flow hedge derivatives as of December 31, 2023 and 2022: Fair value Balance as of December 31, 2023 Balance as of December 31, 2022 Assets Liabilities Assets Liabilities Up to 1 year 3,957 (1,740 ) 10,868 (991 ) Between 1 and 2 years 10,124 (5,347 ) 17,860 (2,189 ) Between 2 and 3 years 12,070 (5,848 ) 12,257 (2,851 ) Subsequent years 33,951 (16,228 ) 53,207 (6,128 ) Total 60,102 (29,163 ) 94,192 (12,159 ) The net amount of the fair value of interest rate derivatives designated as cash flow hedges transferred to the consolidated profit and loss statement in 2023 is a profit of $27.1 million (loss of $38.2 million in 2022 and a loss of $58.3 million in 2021). The after-tax result accumulated in equity in connection with derivatives designated as cash flow hedges at the years ended December 31, 2023 and 2022, amounts to a $308.0 million gain and a $345.6 million gain, respectively. Additionally, the Company has 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 European 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 directly recorded in the consolidated profit and loss statement. Finally, the conversion option of the Green Exchangeable Notes issued in July 2020 (Note 15) is recorded as a derivative with a fair value (liability) of $0.8 million as of December 31, 2023 ($4.7 million as of December 31, 2022).

Related parties

Related parties	12 Months Ended
	Dec. 31, 2023
Related parties [Abstract]
Related parties	Note 11.- Related parties The related parties of the Company are primarily Algonquin and its subsidiaries, non-controlling interests (Note 14), entities accounted for under the equity method (Note 7) and Directors and the Senior Management of the Company. Details of balances with related parties as of December 31, 2023 and 2022 are as follows: As of December 31, Receivables (current) Receivables (non- current) Payables (current) Payables (non- current) Entities accounted for under the equity method: Arroyo Netherland II B.V (Note 8) 2023 18,448 - - - 2022 1,097 17,006 - - Amherst Island Partnership 2023 5,817 - - - 2022 - - - - Akuo Atlantica PMGD Holding 2023 - 16,677 - - 2022 - 504 - - Colombian assets portfolio 2023 - 13,578 34 - 2022 - - - - Other 2023 21 148 - - 2022 127 - - - Non controlling interest: Algonquin 2023 - - 5,683 - 2022 - - 4,762 - JGC Corporation 2023 - - - 4,612 2022 - - - 6,088 Other 2023 - - 2,314 27 2022 - - 1,311 - Other related parties: Atlantica´s partner in Colombia (Note 7) 2023 918 - - - 2022 - - - - Total 2023 25,204 30,403 8,031 4,639 2022 1,224 17,510 6,073 6,088 Receivables with Arroyo Netherland II B.V, the holding company of Pemcorp SAPI de CV, Monterrey´s project entity, correspond to the loan that was granted at acquisition date of the project and accrues an interest of SOFR plus 6.31% with maturity date on November 25, 2027. As of December 31, 2023, the loan is classified as current receivable as it is accounted for as assets held for sale in these Consolidated Financial Statements (Note 8). Current receivables with Amherst Island Partnership as of December 31, 2023 include a dividend to be collected by AYES Canada for $5.8 million. Non-current receivables include a loan that accrues a fixed interest of 8.75% with Akuo Atlantica PMGD Holding S.P.A and a loan with the Colombian portfolio of renewable energy entities in which the Company has a 50% equity interest, which accrues a fixed interest of 8%. Current payables primarily include the dividend to be paid by AYES Canada to Algonquin. Non-current payables with JGC Corporation include a subordinated debt with Solacor 1 and Solacor 2 that accrues an interest of Euribor plus 2.5% and with maturity date in 2037. Current receivables with the partner of the Company in Colombia include Atlantica´s pending purchase price payment to be received for the partial sale of its investment in the Colombian portfolio of renewable energy entities (Note 7). The transactions carried out by entities included in these Consolidated Financial Statements with related parties for the years ended December 31, 2023, 2022 and 2021 have been as follows: Financial income Financial expense Operating income Entities accounted for under the equity method: Arroyo Netherland II B.V 2023 1,845 - - 2022 1,275 - - 2021 2,061 - - Akuo Atlantica PMGD Holding 2023 607 - 316 2022 - - - 2021 - - - Colombian assets portfolio 2023 588 - - 2022 - - - 2021 - - - Other 2023 - - 9 2022 - - - 2021 - - - Non controlling interest: Other 2023 - (471 ) - 2022 23 (153 ) - 2021 8 (97 ) - Total 2023 3,040 (471 ) 325 2022 1,298 (153 ) - 2021 2,069 (97 ) - The total amount of the remuneration received by the Board of Directors of the Company, including the CEO, amounts to $4.0 million in 2023 ($5.7 million in 2022), including $0.9 million of annual bonus ($0.9 million in 2022) and $1.0 million of long-term award vested in 2023 ($3.0 million in 2022). The decrease of the total remuneration in 2023 is mainly due to a decrease in the amount of share options exercised in 2023 compared to 2022, and to the decrease of Atlantica’s share price from the date of such awards being granted. Share options awarded in 2020 and 2021 under the incentive plans that vested in 2023 were underwater and thus not exercised. None of the directors received any pension remuneration in 2023 nor 2022.

Trade and other receivables

Trade and other receivables	12 Months Ended
	Dec. 31, 2023
Trade and other receivables [Abstract]
Trade and other receivables	Note 12.- Trade and other receivables Trade and other receivable as of December 31, 2023 and 2022, consist of the following: Balance as of December 31, 2023 2022 Trade receivables 213,345 125,437 Tax receivables 37,134 45,680 Prepayments 12,717 11,827 Other accounts receivable 23,287 17,390 Total 286,483 200,334 The increase in trade receivables is primarily due to collections pending from the Spanish state-owner regulator, Comision Nacional de los Mercados y de la Competencia or “CNMC” in the solar assets of the Company in Spain and from Pemex in ACT. The Company experienced delays in collections from Pemex, especially since the second half of 2019, which have been significant in certain quarters, including in the fourth quarter of 2023. During the year 2022, in the assets in Spain, the Company collected revenue in line with the parameters corresponding to the regulation in place at the beginning of the year 2022, as the new parameters, reflecting lower revenue, became final on December 14, 2022. As a result, as of December 31, 2022, trade receivables in the assets in Spain were lower than usual. During the year 2023, collections at these assets in Spain were regularized. As of December 31, 2023, and December 31, 2022, the fair value of trade and other receivables accounts does not differ significantly from its carrying amount. Trade receivables in foreign currency as of December 31, 2023 and 2022, are as follows: Balance as of December 31, 2023 2022 Euro 53,012 4,088 South African Rand - 23,416 Chilean peso 4,431 5,037 Mexican peso 4,557 1,298 Other 4,376 2,676 Total 66,376 36,515 The increase in trade receivables in Euro is primarily due to collections pending from the CNMC. Trade receivables in South African Rand decreased due to the unscheduled outage in Kaxu since the end of September 2023 (Note 22).

Cash and cash equivalents

Cash and cash equivalents	12 Months Ended
	Dec. 31, 2023
Cash and cash equivalents [Abstract]
Cash and cash equivalents	Note 13.- Cash and cash equivalents The following table shows the detail of Cash and cash equivalents as of December 31, 2023 and 2022: Balance as of December 31, 2023 2022 Cash at bank and on hand - non restricted 271,329 393,430 Cash at bank and on hand - restricted 176,972 207,560 Total 448,301 600,990 Cash includes funds held to satisfy the customary requirements of certain non-recourse debt agreements within the Company´s projects (Note 16) amounting to $177 million as of December 31, 2023 ($208 million as of December 31, 2022). The following breakdown shows the main currencies in which cash and cash equivalent balances are denominated: Balance as of December 31, Currency 2023 2022 U.S. dollar 266,200 309,756 Euro 102,820 217,675 South African Rand 30,908 36,137 Mexican Peso 13,455 4,010 Algerian Dinar 21,168 24,727 Other 13,750 8,685 Total 448,301 600,990

Equity

Equity	12 Months Ended
	Dec. 31, 2023
Equity [Abstract]
Equity	Note 14.- Equity As of December 31, 2023, the share capital of the Company amounts to $11,615,905 ($11,605,513 as of December 31, 2022) represented by 116,159,054 ordinary shares (116,055,126 shares as of December 31, 2022) fully 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 owns 42.2% of the shares of the Company and is its largest shareholder as of December 31, 2023. Algonquin’s voting rights and rights to appoint directors are limited to 41.5% and the difference between Algonquin´s ownership and 41.5% will vote replicating non-Algonquin’s shareholders’ vote. The Company accounts for its existing long-term incentive plans granted to employees as equity-settled in accordance with IFRS 2, Share-based Payment when incentives are being settled in shares. During the year 2023, the Company issued 103,928 new shares (228,560 new shares during the year 2022) to its employees to settle a portion of these plans. On February 28, 2022, the Company established a new “at-the-market program” which replaced its previous program, and entered into a distribution agreement with BofA Securities, MUFG and RBC Capital Markets, as its sales agents, under which the Company may offer and sell from time to time up to $150 million of its ordinary shares. During the year 2023, the Company did not sell any shares under this program. During the year 2022, the Company sold 3,423,593 shares at an average market price of $33.57 pursuant to its distribution agreement, representing net proceeds of $114 million. Atlantica´s reserves as of December 31, 2023 are made up of share premium account and capital reserves. The share premium account reduction by $250 million during the year 2023, increasing capital reserves by the same amount, was made effective upon the confirmation received on June 26, 2023 from the High Court in the UK, pursuant to the Companies Act 2006. Other reserves primarily include the change in fair value of cash flow hedges and its tax effect. Accumulated currency translation differences primarily include the result of translating the financial statements of subsidiaries prepared in a foreign currency into the presentation currency of the Company, the U.S. dollar. Accumulated deficit primarily includes results attributable to Atlantica. Non-controlling interest fully relate to interest held by JGC in Solacor 1 and Solacor 2, by Idae in Seville PV, by Itochu Corporation in Solaben 2 and Solaben 3, by Algerian Energy Company, SPA and Sacyr Agua S.L. in Skikda, by Algerian Energy Company, SPA in Tenes, by Industrial Development Corporation of South Africa (IDC) and Kaxu Community Trust in Kaxu, by Algonquin Power Co. in AYES Canada, and by partners of the Company in the Chilean renewable energy platform in Chile PV 1, Chile PV 2 and Chile PV 3. Additional information of subsidiaries including material non-controlling interest as of December 31, 2023, and 2022, is disclosed in Appendix IV. Dividends declared during the year 2023 and the first quarter of 2024 by the Board of Directors of the Company were as follows: Declared Payable Amount ($) per share February 29, 2024 March 22, 2024 0.445 November 7, 2023 December 15, 2023 0.445 July 31, 2023 September 15, 2023 0.445 May 4, 2023 June 15, 2023 0.445 February 28, 2023 March 25, 2023 0.445 Dividends declared during the year 2022 by the Board of Directors of the Company were as follows: Declared Payable Amount ($) per share November 8, 2022 December 15, 2022 0.445 August 2, 2022 September 15, 2022 0.445 May 5, 2022 June 15, 2022 0.44 February 25, 2022 March 25, 2022 0.44 In addition, the Company declared dividends and distributions in 2023 to non-controlling interest primarily to Algonquin (interest in Amherst through AYES Canada, see Note 7) for $16.6 million ($20.4 million in 2022), Itochu Corporation for $6.9 million ($3.5 million in 2022), Algerian Energy Company for $6.7 million ($5.4 million in 2022) and IDC and Kaxu Community Trust for $1.2 million ($5.8 million in 2022). In 2023, Chile PV 3 received a capital contribution of $19.5 million from the financial partners (Non-controlling interest) through the renewable energy platform of the Company in Chile to install batteries in the asset (Note 1). As of December 31, 2023 and December 31, 2022, there was no treasury stock and there have been no transactions with treasury stock during the years then ended.

Corporate debt

Corporate debt	12 Months Ended
	Dec. 31, 2023
Corporate debt [Abstract]
Corporate debt	Note 15.- Corporate debt The breakdown of the corporate debt as of December 31, 2023 and 2022 is as follows: Balance as of December 31, 2023 2022 Non-current 1,050,816 1,000,503 Current 34,022 16,697 Total Corporate debt 1,084,838 1,017,200 On July 20, 2017, the Company signed a credit facility (the “2017 Credit Facility”) for up to €10.0 million ($11.0 million), which is available in euros or U.S. dollars. Amounts drawn down accrue interest at a rate per year equal to EURIBOR plus 2% or SOFR plus 2%, depending on the currency, with a floor of 0% on the EURIBOR and SOFR On May 10, 2018, the Company entered into the Revolving Credit Facility for $215 million with a syndicate of banks. Amounts drawn down accrue interest at a rate per year equal to (A) for Eurodollar rate loans, Term SOFR, plus a Term SOFR Adjustment equal to 0.10% per annum, plus a percentage determined by reference to the leverage ratio of the Company, ranging between ½ to the maturity was extended to December 31, 2025 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 had an original maturity of twelve months and was extended for annual periods until October 2023. The program allowed Atlantica to issue short term notes over the next twelve months for up to €50 million ($55 million), with such notes having a tenor of up to two years. On November 21, 2023, the Company filed a new program that allows Atlantica to issue short term notes for up to €100 million, with such notes having a tenor of up to two years and the program maturity has been extended twelve months. As of December 31, 2023, the Company had €23.3 million ( $25.7 million ) issued and outstanding under the program at an average cost of 5.23% (€9.3 million , or , as of December ). On April 1, 2020, the Company closed the secured 2020 Green Private Placement for €290 million ($320 million). The private placement accrues interest at an annual 1.96% interest rate, payable quarterly and has a June 2026 maturity. On July 8, 2020, the Company entered into the Note Issuance Facility 2020, a senior unsecured financing with a group of funds managed by Westbourne Capital as purchasers of the notes issued thereunder for a total amount of $155 million which is denominated in euros (€140 million). The Note Issuance Facility 2020 was issued on August 12, 2020, interest accrues at a rate per annum equal to the sum of the 3-month EURIBOR plus a margin of with a floor of 0% for the EURIBOR The Company initially entered into a cap at 0% for the EURIBOR with 3.5 years maturity and in December 2023, into a cap at 4% to hedge the variable interest rate risk with maturity on December 31, 2024. On July 17, 2020, ASI Jersey Ltd, a subsidiary of the Company issued the Green Exchangeable Notes for $100 million in aggregate principal amount of 4.00% convertible bonds due in 2025. On July 29, 2020, the Company closed an additional $15 million aggregate principal amount of the Green Exchangeable Notes. The notes mature on July 15, 2025, and bear interest at a rate of 4.00% per annum. The initial exchange rate of the notes is 29.1070 ordinary shares per $1,000 principal amount of notes, which is equivalent to an initial exchange price of $34.36 per ordinary share. Noteholders may exchange their notes at their option at any time prior to the close of business on the scheduled trading day immediately preceding April 15, 2025, only during certain periods and upon satisfaction of certain conditions. On or after April 15, 2025, noteholders may exchange their notes at any time. Upon exchange, the notes may be settled, at the election of the Company, into Atlantica ordinary shares, cash or a combination thereof. The exchange rate is subject to adjustment upon the occurrence of certain events. As per IAS 32, “Financial Instruments: Presentation”, the conversion option of the Green Exchangeable Notes is an embedded derivative classified within the line “Derivative liabilities” of these Consolidated Financial Statements (Note 10). It was initially valued at the transaction date for $10 million, and prospective changes to its fair value are accounted for directly through the profit and loss statement. This instrument is classified as Level 2 in the fair value hierarchy (Note 2.7) based on the observable inputs used for the calculation of its fair value. The valuation technique used is a Monte Carlo which uses regressions to estimate, given a stock price level, the continuation value of the instrument. The principal element of the Green Exchangeable Notes, classified within the line “Corporate debt” of these Consolidated Financial Statements, is initially valued as the difference between the consideration received from the holders of the instrument and the value of the embedded derivative, and thereafter, at amortized cost using the effective interest method as per IFRS 9, Financial Instruments. On May 18, 2021, the Company issued the Green Senior Notes due in 2028 in an aggregate principal amount of $400 million. The notes mature on May 15, 2028 and bear interest at a rate of 4.125% per annum payable on June 15 and December 15 of each year, commencing December 15, 2021. On May 10, 2023, the Company entered into a senior unsecured $50 million line of credit with Export Development Canada with a 3-year maturity. Loan under the credit line accrues interest at a rate per annum equal to Term SOFR plus a percentage determined by reference to the leverage ratio of the Company, ranging between 2.46% and 3.11%, with a floor of 0.00% for the Term SOFR. The facility matures on May 25, 2026, and was fully available as of December 31, 2023. Since 2020, the Company entered into loans with different banks as follows: - a €5 million ($5.5 million) loan on December 4, 2020, which accrues interest at a rate per year equal to 2.50%. The maturity date is December 4, 2025. - a €5 million ($5.5 million) loan on January 31, 2022, which accrues interest at a rate per year equal to 1.90%. The maturity date is January 31, 2026. - a €7 million ($7.7 million) loan on February 24, 2023, which accrues interest at a rate per year equal to 4.21%. The maturity date is February 24, 2028. The repayment schedule for the corporate debt as of December 31, 2023 is as follows: 2024 2025 2026 2027 2028 Total 2017 Credit Facility 13 9,876 - - - 9,889 Revolving Credit Facility 261 54,427 - - - 54,688 Commercial Paper 25,691 - - - - 25,691 2020 Green Private Placement 174 - 318,668 - - 318,842 2020 Note Issuance Facility - - - 152,356 - 152,356 Green Exchangeable Notes 2,108 110,020 - - - 112,128 Green Senior Note 963 - - - 395,964 396,927 Other bank Loans 4,812 4,736 2,288 1,642 839 14,317 Total 34,022 179,059 320,956 153,998 396,803 1,084,838 The repayment schedule for the corporate debt as of December 31, 2022 was as follows: 2023 2024 2025 2026 2027 Subsequent years Total 2017 Credit Facility 8 6,423 - - - - 6,431 Revolving Credit Facility 112 29,387 - - - - 29,499 Commercial Paper 9,937 - - - - - 9,937 2020 Green Private Placement 423 - - 308,389 - - 308,812 2020 Note Issuance Facility - - - - 147,257 - 147,257 Green Exchangeable Notes 2,107 - 107,055 - - - 109,162 Green Senior Note 964 - - - - 395,060 396,024 Other bank Loans 3,146 3,122 3,124 686 - - 10,078 Total 16,697 38,932 110,179 309,075 147,257 395,060 1,017,200 The following table details the movement in corporate debt for the year 2023: Corporate debt - long term Corporate debt - short term Total Balance as of December 31, 2022 1,000,503 16,697 1,017,200 Nominal increase 35,648 126,537 162,185 Nominal repayment - (115,891 ) (115,891 ) Interest payment - (40,573 ) (40,573 ) Total cash changes 35,648 (29,927 ) 5,721 Interest accrued - 40,570 40,570 Currency translation differences 15,037 1,255 16,292 Other non-cash changes 5,055 - 5,055 Reclassifications (5,427 ) 5,427 - Total non-cash changes 14,665 47,252 61,917 Balance as of December 31, 2023 1,050,816 34,022 1,084,838 The following table details the movement in corporate debt for the year 2022: Corporate debt - long term Corporate debt - short term Total Balance as of December 31, 2021 995,190 27,881 1,023,071 Nominal increase 35,574 65,566 101,140 Nominal repayment (1,323 ) (79,196 ) (80,519 ) Interest payment - (38,117 ) (38,117 ) Total cash changes 34,251 (51,747 ) (17,496 ) Interest accrued - 38,321 38,321 Currency translation differences (29,419 ) (1,423 ) (30,842 ) Other non-cash changes 4,146 - 4,146 Reclassifications (3,665 ) 3,665 - Total non-cash changes (28,938 ) 40,563 11,625 Balance as of December 31, 2022 1,000,503 16,697 1,017,200

Project debt

Project debt	12 Months Ended
	Dec. 31, 2023
Project debt [Abstract]
Project debt	Note 16.- Project debt This note shows the project debt linked to the 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 (Note 13) for an amount of $177 million as of December 31, 2023 ($208 million as of December 31, 2022). The variations in 2023 of project debt have been the following: Project debt - long term Project debt - short term Total Balance as of December 31, 2022 4,226,518 326,534 4,553,052 Nominal increase 213,232 - 213,232 Nominal repayment (4,768 ) (513,576 ) (518,344 ) Interest payment - (227,145 ) (227,145 ) Total cash changes 208,464 (740,721 ) (532,257 ) Interest accrued - 227,418 227,418 Currency translation differences 28,808 7,150 35,958 Other non-cash changes 35,024 65 35,089 Reclassifications (566,941 ) 566,941 - Total non-cash changes (503,109 ) 801,574 298,465 Balance as of December 31, 2023 3,931,873 387,387 4,319,260 The decrease in total project debt as of December 31, 2023, is primarily due to the repayment of project debt for the period in accordance with the financing arrangements. The Company refinanced the Solaben 2&3 assets in March 2023, entering into two green senior euro-denominated loan agreements for the two assets with a syndicate of banks for a total amount of €198.0 million. The new project debt replaced the previous project loans for a similar amount and maturity was extended from December 2030 to June 2037. Chile PV 1 and Chile PV 2, where the Company owns a 35% equity interest, were not able to maintain the minimum required cash in its debt service reserve account during the year 2023 due to low electricity prices, which represents an event of default as of December 31, 2023. As a result, although the Companies do not expect an acceleration of the debts to be declared by the credit entities, Chile PV 1 and Chile PV 2 did not have an unconditional right to defer the settlement of the debt for at least twelve months and the project debts, which amount to $50 million and $21 million as of December 31, 2023, respectively, were classified as current in these Consolidated Financial Statements in accordance with International Accounting Standards 1 (“IAS 1”), “Presentation of Financial Statements”. The variations in 2022 of project debt were the following: Project debt - long term Project debt - short term Total Balance as of December 31, 2021 4,387,674 648,519 5,036,193 Nominal repayment (73,478 ) (310,629 ) (384,107 ) Interest payment - (232,855 ) (232,855 ) Total cash changes (73,478 ) (543,484 ) (616,962 ) Interest accrued - 230,237 230,237 Business combination (Note 5) 1,301 148 1,449 Currency translation differences (119,068 ) (18,040 ) (137,108 ) Other non-cash changes 39,161 82 39,243 Reclassifications (9,072 ) 9,072 - Total non-cash changes (87,678 ) 221,499 133,821 Balance as of December 31, 2022 4,226,518 326,534 4,553,052 The decrease in total project debt as of December 31, 2022 was primarily due to: - the repayment of project debt for the period in accordance with the financing arrangements; and - the lower value of debt denominated in Euros given the depreciation of the Euro against the U.S. dollar since December 31, 2021. As of December 31, 2021, Kaxu total debt was presented as current in the Consolidated Financial Statements of the Company, for an amount of $314 million, in accordance with International Accounting Standards 1 (“IAS 1”), “Presentation of Financial Statements”, as a result of the existence of a theoretical event of default under the Kaxu project finance agreement. Since March 31, 2022, the Company has again an unconditional right to defer the settlement of the debt for at least more than twelve months, and therefore the debt previously presented as current in these Consolidated Financial Statements was reclassified as non-current in accordance with the financing agreements. The repayment schedule for project debt in accordance with the financing arrangements as of December 31, 2023, and assuming there would be no acceleration at the Chile PV 1 and Chile PV 2 debts as of December 31, 2023, is as follows and is consistent with the projected cash flows of the related projects: 2024 2025 2026 2027 2028 Subsequent years Total Interest payment Nominal repayment 15,215 305,087 325,303 352,495 499,968 464,648 2,356,544 4,319,260 The repayment schedule for project debt in accordance with the financing arrangements was as follows and was consistent with the projected cash flows of the related projects: 2023 2024 2025 2026 2027 Subsequent years Total Interest payment Nominal repayment 15,053 311,481 323,731 442,920 358,444 504,954 2,596,469 4,553,052 The equivalent in U.S. dollars of the foreign currency-denominated project debts held by the Company is as follows: Balance as of December 31, Currency 2023 2022 Euro 1,571,369 1,633,790 South African Rand 233,854 277,492 Algerian Dinar 76,277 86,739 Total 1,881,500 1,998,021 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, 2023
Grants and other liabilities [Abstract]
Grants and other liabilities	Note 17.- Grants and other liabilities Grants and other liabilities as of December 31, 2023 and December 31, 2022 are as follows: Balance as of December 31, 2023 2022 Grants 852,854 911,593 Other liabilities and provisions 380,954 340,920 Dismantling provision 155,279 140,595 Lease liabilities 82,366 63,076 Accruals on Spanish market prices differences 98,820 91,884 Other 44,489 45,365 Grant and other non-current liabilities 1,233,808 1,252,513 As of December 31, 2023, 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 $578 million ($610 million as of December 31, 2022), 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 operating 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 $273 million ($299 million as of December 31, 2022). 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 $58.5 million and $58.6 million for the years ended December 31, 2023 and 2022, respectively (Note 22). The increase in other liabilities and provisions in 2023 is primarily due to the accretion expense recognized in the year when updating the present value of these liabilities. The “Accruals on Spanish market prices differences” corresponds to the differences that occur in each financial year between revenue from the sale of energy at the estimated price determined by the Administration in Spain in accordance with the reasonable profitability scheme determined by law, and the revenue from the sale of energy at the actual average market price in the year. These market price differences are regularized through the compensation and adjustment of the parameters which serve as a basis for calculating the regulated revenue compensation to be received from the Administration in Spain over the remaining regulatory life of the solar assets of the Company to obtain the guaranteed profitability for each solar asset. Current portion amounts to $12.5 million as of December 31, 2023 and $11.9 million as of December 31, 2022 (Note 18). The maturity of Other liabilities and provisions is as follows As of December 31, 2023 Total 2024 2025 2026 2027 2028 Subsequent Other liabilities and provisions 380,954 - 26,503 21,714 22,975 22,367 287,395 Total 380,954 - 26,503 21,714 22,975 22,367 287,395 As of December 31, 2022 Total 2023 2024 2025 2026 2027 Subsequent Other liabilities and provisions 340,920 - 26,393 20,096 20,561 20,867 253,003 Total 340,920 - 26,393 20,096 20,561 20,867 253,003

Trade payables and other curren

Trade payables and other current liabilities	12 Months Ended
	Dec. 31, 2023
Trade payables and other current liabilities [Abstract]
Trade payables and other current liabilities	Note 18.- Trade payables and other current liabilities Trade payables and other current liabilities as of December 31, 2023 and 2022 are as follows: Balance as of December 31, Item 2023 2022 Trade accounts payables 77,266 84,465 Accruals on Spanish market prices differences (Note 17) 12,475 11,936 Down payments from clients and other deferred income 16,905 11,169 Other accounts payables 35,067 32,660 Total 141,713 140,230 Trade accounts payables mainly relate to the operation and maintenance of the plants owned by the Company Nominal values of trade payables and other current liabilities are considered to approximately equal fair values and the effect of discounting them is not significant.

Income Tax

Income Tax	12 Months Ended
	Dec. 31, 2023
Income Tax [Abstract]
Income Tax	Note 19.- 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 profit and loss 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, 2023, and 2022, the analysis of deferred tax assets and deferred tax liabilities is as follows: Deferred tax assets Balance as of December 31, From 2023 2022 Net operating loss carryforwards (“NOL´s”) 478,179 442,415 Temporary tax non-deductible expenses 158,201 134,328 Derivatives financial instruments 6,855 3,461 Other 20,800 5,895 Total deferred tax assets 664,035 586,099 Deferred tax liabilities Balance as of December 31, From 2023 2022 Accelerated tax amortization 589,111 524,363 Other difference between tax and book value of assets 154,875 186,536 Derivatives financial instruments 12,989 19,034 Other 17,353 2,991 Total deferred tax liabilities 774,328 732,924 After offsetting deferred tax assets and deferred tax liabilities, where applicable Consolidated balance sheets classifications Balance as of December 31, 2023 2022 Deferred tax assets 160,995 149,656 Deferred tax liabilities 271,288 296,481 Net deferred tax liabilities 110,293 146,825 Most of the NOL´s recognized as deferred tax assets correspond to the entities in the U.S. for $310 million, South Africa for $46 million, Peru for $46 million, Chile for $38 million and Spain for $33 million as of December 31, 2023 ($278 million, $53 million, $46 million, $35 million and $28 million as of December 31, 2022, respectively). As of December 31, 2023, deferred tax assets for non-deductible expenses are primarily due to the temporary limitation of financial expenses deductibles for tax purposes in the solar plants in Spain for $93 million and in the U.S. assets for $49 million ($94 million and $25 million as of December 31, 2022, respectively). As of December 31, 2023, deferred tax liabilities for accelerated tax amortization are primarily in the U.S. assets for $339 million, the solar plants in Spain for $173 million and Kaxu for $55 million ($274 million, $173 million and $63 million as of December 31, 2022, respectively). Deferred tax liabilities for other temporary differences between the tax and book value of contracted concessional assets relate primarily to the U.S. entities for $43 million, the Peruvian entities for $39 million, ACT for $34 million and the Chilean entities for $27 million as of December 31, 2023 ($51 million, $37 million, $56 million, and $27 million as of December 31, 2022, respectively). 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. Therefore, the carrying amount of deferred tax assets is reviewed at each annual closing date and reduced to the extent that it is no longer probable that sufficient taxable profit will be available to allow all or part of the deferred tax asset to be utilized. Unrecognized deferred tax assets are re-assessed at each annual closing date and are recognized to the extent that it has become probable that future taxable profits will allow the deferred tax asset to be recovered. In assessing the recoverability of deferred tax assets, Atlantica relies on projections of results over the useful life of the contracted concessional assets. In addition, the Company has $448 million of unrecognized net operating loss carryforwards as of December 31, 2023 ($477 million as of December 31, 2022), as it considers it is not probable that future taxable profits will be available against which these unused tax losses can be utilized. The movements in deferred tax assets and liabilities during the years ended December 31, 2023 and 2022 were as follows: Deferred tax assets Amount As of December 31, 2021 172,268 Increase/(decrease) through the consolidated profit and loss statement 29,197 Increase/(decrease) through other consolidated comprehensive income (equity) (46,344 ) Currency translation differences and other (5,465 ) As of December 31, 2022 149,656 Increase/(decrease) through the consolidated profit and loss statement 7,327 Increase/(decrease) through other consolidated comprehensive income (equity) 2,207 Currency translation differences and other 1,805 As of December 31, 2023 160,995 Deferred tax liabilities Amount As of December 31, 2021 308,859 Increase/(decrease) through the consolidated profit and loss statement (19,864 ) Increase/(decrease) through other consolidated comprehensive income (equity) 17,608 Currency translation differences and other (10,122 ) As of December 31, 2022 296,481 Increase/(decrease) through the consolidated profit and loss statement (27,055 ) Increase/(decrease) through other consolidated comprehensive income (equity) (5,830 ) Currency translation differences and other 7,692 As of December 31, 2023 271,288 Details of income tax for the years ended December 31, 2023, 2022 and 2021 are as follows: For the year ended December 31, 2023 2022 2021 Current tax (35,172 ) (39,372 ) (51,016 ) Deferred tax 34,382 49,061 14,796 - relating to the origination and reversal of temporary differences 34,382 49,061 14,796 Total income tax (expense)/income (790 ) 9,689 (36,220 ) 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)/income recognized in the consolidated profit and loss statements for the years ended December 31, 2023, 2022, and 2021, is as follows: For the year ended December 31, 2023 2022 2021 Consolidated profit/(loss) before taxes 37,238 (11,776 ) 25,302 Average statutory tax rate 25 % 25 % 25 % Corporate income tax at average statutory tax rate (9,310 ) 2,944 (6,326 ) Income tax of associates, net 3,302 5,366 3,076 Differences in statutory tax rates (4,270 ) (4,296 ) (3,359 ) Unrecognized NOLs and deferred tax assets (11,070 ) (10,944 ) (11,232 ) Permanent differences 17,493 3,957 (4,052 ) Other adjustments to taxable income and expense 3,065 12,662 (14,327 ) Corporate income tax (790 ) 9,689 (36,220 ) For the year ended December 31, 2021, the overall effective tax rate was significantly different than the average statutory rate of 25% primarily due to unrecognized tax losses carryforwards, mainly in the UK entities and to provisions recorded for potential tax contingencies in some jurisdictions. The overall effective tax rate is closer to the average statutory rate of 25% for the years ended December 31, 2023 and 2022. Uncertain tax positions as of December 31, 2023, 2022 and 2021 have been analyzed by the Company in accordance with IFRIC 23 (uncertainty over income tax treatments). As a result of this analysis, the Company concluded that the risk of the uncertainties is remote and accordingly, the expectation is that these uncertainties would have an insignificant effect on the Consolidated Financial Statements.

Commitments, third-party guaran

Commitments, third-party guarantees, contingent assets and liabilities	12 Months Ended
	Dec. 31, 2023
Commitments, third-party guarantees, contingent assets and liabilities [Abstract]
Commitments, third-party guarantees, contingent assets and liabilities	Note 20.- Commitments, third-party guarantees, contingent assets and liabilities Contractual obligations The following tables show the breakdown of the third-party commitments and contractual obligations as of December 31, 2023 and 2022: 2023 Total 2024 2025 2026 2027 2028 Subsequent Corporate debt (Note 15) 1,084,838 34,022 179,059 320,956 153,998 396,803 - Loans with credit institutions (Project debt) (Note 16) 3,393,767 265,649 273,015 298,527 443,503 406,282 1,706,791 Notes and bonds (Project debt) (Note 16) 925,493 54,653 52,288 53,968 56,465 58,366 649,753 Purchase commitments* 713,509 81,868 52,814 47,164 51,768 45,243 434,652 Accrued interest estimate during the useful life of loans 1,717,831 264,223 257,379 224,032 198,073 161,346 612,778 2022 Total 2023 2024 2025 2026 2027 Subsequent Corporate debt (Note 15) 1,017,200 16,697 38,932 110,179 309,075 147,257 395,060 Loans with credit institutions (Project debt) (Note 16) 3,595,671 273,556 275,105 391,770 305,616 449,653 1,899,971 Notes and bonds (Project debt) (Note 16) 957,381 52,978 48,626 51,150 52,828 55,301 696,498 Purchase commitments* 823,856 96,847 99,597 54,747 51,058 56,852 464,755 Accrued interest estimate during the useful life of loans 1,821,915 264,626 248,794 229,142 203,961 179,386 696,006 * Purchase commitments include lease commitments for lease arrangements accounted for under IFRS 16 for $135.1 million as of December 31, 2023 ($112.0 million as of December 31, 2022), of which $9.4 million is due within one year and $125.7 million thereafter as of December 31, 2023 ($7.9 million due within one year and $104.1 million thereafter as of December 31, 2022). Third-party guarantees As of December 31, 2023, the sum of bank guarantees and surety bonds deposited by the subsidiaries of the Company as a guarantee to third parties (clients, financial entities and other third parties) amounted to $83.2 million ($88.0 million as of December 31, 2022). Corporate debt guarantees The payment obligations under the Green Senior Notes, the Revolving Credit Facility, the Note Issuance Facility 2020 and the 2020 Green Private Placement are guaranteed on a senior unsecured basis by following subsidiaries of the Company: Atlantica Infraestructura Sostenible, S.L.U., Atlantica Peru, S.A., ACT Holding, S.A. de C.V., Atlantica Investments Limited, Atlantica Newco Limited and Atlantica North America LLC. The Revolving Credit Facility and the 2020 Green Private Placement are also secured with a pledge over the shares of the subsidiary guarantors. Legal Proceedings In 2018, an insurance company covering certain Abengoa obligations in Mexico claimed certain amounts related to a potential loss. Atlantica 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. In January 2019, the insurance company called on this $2.5 million from the escrow account and Abengoa reimbursed this amount. The insurance company could claim additional amounts if they faced new losses after following a process agreed between the parties and, in any case, Atlantica would only make payments if and when the actual loss has been confirmed and after arbitration if the Company initiates it. The Company used to have indemnities from Abengoa for certain potential losses, but such indemnities are no longer valid following the insolvency filing by Abengoa S.A. in February 2021. In addition, during 2021 and 2022, several lawsuits were filed related to the February 2021 winter storm in Texas against among others Electric Reliability Council of Texas (ERCOT), two utilities in Texas and more than 230 individual power generators, including Post Oak Wind, LLC, the project company owner of Lone Star 2, one of the wind assets in Vento II where the Company currently has a 49% equity interest. The basis for the lawsuit is that the defendants failed to properly prepare for cold weather, including failure to implement measures and equipment to protect against cold weather, and failed to properly conduct their operations before and during the storm. Atlantica is not a party to any other significant legal proceedings other than legal proceedings arising in the ordinary course of its business. Atlantica is party to various administrative and regulatory proceedings that have arisen in the ordinary course of business. While Atlantica does not expect these proceedings, either individually or in combination, to have a material adverse effect on its financial position or results of operations, because of the nature of these proceedings Atlantica is not able to predict their ultimate outcomes, some of which may be unfavorable to Atlantica.

Employee benefit expenses

Employee benefit expenses	12 Months Ended
	Dec. 31, 2023
Employee benefit expenses [Abstract]
Employee benefit expenses	Note 21.- Employee benefit expenses The table below shows the employee benefit expenses and the average number of employees for the years ended December 31, 2023, 2022 and 2021: For the year ended December 31, 2023 2022 2021 Employee benefit expenses 104,083 80,232 78,758 Average number of employees 1,304 874 655 The increase in employee benefit expenses in 2023 and 2022 is primarily due to the internalization of operation and maintenance services in the solar assets in Spain during and 2023, and of Kaxu since February

Other operating income and expe

Other operating income and expenses	12 Months Ended
	Dec. 31, 2023
Other operating income and expenses [Abstract]
Other operating income and expenses	Note 22.- Other operating income and expenses The table below shows the detail of Other operating income and expenses for the years ended December 31, 2023, 2022 and 2021: For the year ended December 31, Other operating income 2023 2022 2021 Grants 58,742 59,056 60,746 Insurance proceeds and other 35,731 21,726 13,925 Income from construction services for contracted concessional assets of the Company accounted for under IFRIC 12 6,614 - - Total 101,087 80,782 74,670 For the year ended December 31, Other operating expenses 2023 2022 2021 Raw materials and consumables used (35,380 ) (19,639 ) (70,690 ) Leases and fees (14,403 ) (11,512 ) (9,332 ) Operation and maintenance (130,442 ) (140,382 ) (154,007 ) Independent professional services (30,656 ) (38,894 ) (39,177 ) Supplies (37,822 ) (59,336 ) (40,790 ) Insurance (41,087 ) (45,756 ) (45,429 ) Levies and duties (15,031 ) (19,764 ) (29,949 ) Other expenses (25,187 ) (15,965 ) (24,957 ) Construction costs from construction services for contracted concessional assets of the Company accounted for under IFRIC 12 (6,614 ) - - Total (336,622 ) (351,248 ) (414,330 ) 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 17). Insurance proceeds and other includes $15.3 million of insurance income in 2023 related to an unscheduled outage in Kaxu further to a problem found in the turbine. The Company expects to receive compensation from the insurance company to cover part of the damage and business interruption of the plant. In addition, it includes a gain of $4.6 million related to the sale of part of Atlantica´s equity interest in the Colombian portfolio of renewable energy entities (Note 7). Income and costs from construction services correspond to the projects ATN Expansion 3 and ATS Expansion 1, which are currently under construction. Given that these projects are included within the scope of IFRIC 12 (intangible assets), the Company has recorded the income and the cost of construction in the consolidated statement of profit or loss (Note 2.3.). The decrease in other operating expenses in 2023 is primarily due to: - the internalization of the O&M services in the solar assets in Spain during 2022 and 2023. These services are now provided by employees of Atlantica, whose cost is classified within the line “Employee benefit expenses” of the profit and loss statement; and - the lower cost of supplies due to lower prices of electricity in the solar assets in Spain in 2023. The decrease in other operating expenses in 2022, and specifically Raw materials and consumables used, was primarily due to a specific non-recurrent solar project of Rioglass which ended in October 2021.

Financial expense, net

Financial expense, net	12 Months Ended
	Dec. 31, 2023
Financial expense, net [Abstract]
Financial expense, net	Note 23.- Financial expense, net The following table sets forth financial income and expense for the years ended December 31, 2023, 2022 and 2021: For the year ended December 31, Financial income 2023 2022 2021 Interest income on deposits and current accounts 21,715 7,740 3,580 Interest income from loans and credits 2,942 1,299 2,066 Interest rates gains on derivatives: cash flow hedges 350 1,110 316 Total 25,007 10,149 5,962 For the year ended December 31, Financial expense 2023 2022 2021 Interest on loans and notes (350,347 ) (292,043 ) (302,558 ) Interest rates gains/(losses) on derivatives: cash flow hedges 26,598 (38,402 ) (58,340 ) Total (323,749 ) (330,445 ) (360,898 ) Interest income on deposits and current accounts increased in 2023 mostly due to higher remuneration of deposits resulting from higher interest rates. Interest expense on loans and notes primarily include interest on corporate and project debt which increase in 2023 is primarily due to the increase in variable spot interest rates. Considering interest gains on hedge instruments of such loans and notes, total interest decreased in 2023 as in 2022, which is primarily due to the repayment of project and corporate debt in accordance with the financing arrangements. Gains and losses from interest rate derivatives designated as cash flow hedges primarily correspond to transfers from equity to financial income or expense when the hedged item impacts the consolidated profit and loss statement. The decrease on losses and increase of gains in 2023 compared to 2022 and 2021 is due to an increase in the spot interest rates in 2023 and 2022 compared to the previous year, which implies lower interest payments or higher payments received from the derivatives instruments contracted. Net exchange differences Net exchange differences primarily correspond to realized and unrealized exchange gains and losses on transactions in foreign currencies as part of the normal course of the business of the Company, and to the change in fair value of caps hedging the net cash flows in Euros of the Company, which was largely stable in 2023 while it accounted for an income in 2022. Other financial income/(expense), net The following table sets out Other financial income/(expense), net for the years 2023, 2022 and 2021: For the year ended December 31, Other financial income/(expense), net 2023 2022 2021 Other financial income 8,863 20,539 28,742 Other financial losses (25,546 ) (21,434 ) (16,571 ) Total (16,683 ) (895 ) 12,171 Other financial income in 2023 primarily include $3.9 million of income further to the change in the fair value of the conversion option of the Green Exchangeable Notes (Note 15) since December 2022, and $0.1 million of income for non-monetary change to the fair value of derivatives of Kaxu for which hedge accounting is not applied ($12.0 million and $6.2 million of income in 2022, respectively, and $9.2 million and $7.6 million of income in 2021, respectively). Other financial losses primarily include guarantees and letters of credit, other bank fees and non-monetary interest expenses for updating the present value of provisions and other long-term liabilities reflecting the passage of time.

Earnings per share

Earnings per share	12 Months Ended
	Dec. 31, 2023
Earnings per share [Abstract]
Earnings per share	Note 24.- Earnings per share Basic earnings per share have been calculated by dividing the profit/(loss) attributable to equity holders of the Company by the average number of outstanding shares. Average number of outstanding diluted shares for the year 2023 have been calculated considering the potential issuance of 3,347,305 shares (3,347,305 shares as of December 31, 2022, and December 31, 2021) on the settlement of the Green Exchangeable Notes (Note 15) and the potential issuance of 217,418 shares (226,032 as of December 31, 2022 and 327,749 shares as of December 31, 2021) under the long-term incentive plans granted to employees. It also included the potential issuance of 596,681 shares to Algonquin for the year 2022 (725,041 shares as of December 31, 2021) under the agreement signed on August 3, 2021, according to which Algonquin has the option, on a quarterly basis, to subscribe such number of shares to maintain its percentage in Atlantica in relation to the use of the ATM program (Note 14). For the year ended December 31, Item 2023 2022 2021 Profit/(loss) attributable to Atlantica 43,380 (5,443 ) (30,080 ) Average number of ordinary shares outstanding (thousands) - basic 116,152 114,695 111,008 Average number of ordinary shares outstanding (thousands) - diluted 119,720 118,865 115,408 Earnings per share for the year (US dollar per share) - basic 0.37 (0.05 ) (0.27 ) Earnings per share for the year (US dollar per share) - diluted (*) 0.37 (0.09 ) (0.28 ) (*) The potential ordinary shares related to the Green Exchangeable Notes and the long-term incentive plans granted to employees have not been considered in the calculation of diluted earnings per share for the year ended December 31, 2023, as they have an antidilutive effect. For the years ended December 31, 2022, and December 31, 2021, the potential ordinary shares related to the long-term incentive plans granted to employees and the ATM program have not been considered in the calculation of diluted earnings per share as they have an antidilutive effect.

Other information

Other information	12 Months Ended
	Dec. 31, 2023
Other information [Abstract]
Other information	Note 25.- Other information 25.1 Restricted Net assets Certain of the consolidated entities are restricted from remitting certain funds to Atlantica Sustainable Infrastructure 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. At December 31, 2023, the accumulated amount of the temporary restrictions for the entire restricted term of these affiliates was $267 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 did not exceed 25% of the consolidated net assets of the Company as of December 31, 2023. Therefore, separate financial statements of Atlantica Sustainable Infrastructure, plc. do not have to be presented. 25.2 Subsequent events On February 29, 2024, the Board of Directors of the Company approved a dividend of 0.445 per share, which is expected to be paid on March 22, 2024.

Significant accounting polici_2

Significant accounting policies (Policies)	12 Months Ended
	Dec. 31, 2023
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. The Company presents assets and liabilities in the statement of financial position based on current/non-current classification. An asset or liability is current when it is expected or due to be realized within twelve months after the reporting period. The Company recognizes that there may be potential financial implications in the future from changes in legislation and regulation implemented to address climate change risk. Over time these changes may have an impact across a number of areas of accounting. However, as at the reporting sheet date, the Company believes there is no material impact on the balance sheet carrying values of assets or liabilities. Application of new accounting standards a) Standards, interpretations and amendments effective from January 1, 2023 under IFRS-IASB, applied by the Company in the preparation of these Consolidated Financial Statements: The applications of these amendments have not had any material impact on these Consolidated Financial Statements. In addition, the IASB published in May 2023 an amendment to IAS 12, “Income taxes”, to clarify the application of this standard arising from tax legislation enacted or substantively enacted in each country to implement the Pillar Two model rules in which it provides: - a temporary exception to the accounting for deferred taxes in connection with the implementation of Pillar Two. - qualitative and quantitative disclosures to enable users to understand the entities’ exposure to taxes that may arise from the Pillar Two model rules and/or the entity’s progress in its implementation. Global minimum taxation (Pillar Two OECD/G20 BEPS 2.0 top-up taxes as agreed by the Inclusive Framework) legislation has been enacted or substantially enacted in certain jurisdictions in which the Atlantica operates. The new legislation will be effective for the Company´s financial years beginning January 1, 2024. Atlantica is in scope of the enacted or substantially enacted legislation and has performed an assessment of the Company´s potential exposure to Pillar Two top-up taxes. The assessment is based on the country-by-country reporting and financial statements for the constituent entities of Atlantica. Based on the assessment performed, the Pillar Two effective tax rates in most of the jurisdictions in which Atlantica operates are above 15% and in all of them meet the requirements to apply the relevant transitional safe harbors, with the exception of one jurisdiction, whose impact is not material. Therefore, Atlantica does not expect a material exposure to Pillar Two income taxes for accounting periods commencing on or after December 31, 2023. b) Standards, interpretations and amendments published by the IASB that will be effective for periods beginning on or after January 1, 2024: 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, 2024, although it is currently still in the process of evaluating such application. The Company has not early adopted any standard, interpretation or amendment that has been issued but is not yet effective.
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 control over them and are accounted for as investments under the equity method as long as Atlantica has 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 previously 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 in profit or loss. 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. A joint venture is a type of joint arrangement whereby the parties that have joint control of the arrangement have rights to the net assets of the joint venture. Joint control is the contractually agreed sharing of control of an arrangement, which exists only when decisions about the relevant activities require the unanimous consent of the parties sharing control. The results and assets and liabilities of associates and joint ventures are incorporated in these financial statements using the equity method of accounting. Under the equity method, an investment in an associate or joint venture is initially recognized in the statement of financial position at fair value and adjusted thereafter to recognize changes in Atlantica´s share of net assets of the associate or joint venture since the acquisition date. Any goodwill relating to the associate or joint venture is included in the carrying amount of the investment and is not tested for impairment separately. Controlled entities, associates and joint ventures included in these financial statements as of December 31, 2023 and 2022 are set out in appendices.
Contracted concessional, Property, Plant and Equipment (PP&E) and other intangible assets	2.3. Contracted concessional, Property, Plant and Equipment (PP&E) and other intangible The assets accounted for by the Company as contracted concessional assets under IFRIC 12 (either intangible model or financial model), as PP&E under IAS 16 or as other intangible assets under IAS 38 or under IFRS 16 (as “Lessee” or “Lessor”), include renewable energy assets, storage assets, transmission lines, efficient natural gas and heat assets and water plants. a) Contracted concessional assets under IFRIC 12 The infrastructure used in a concession accounted for under IFRIC 12 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 judgement in relation to, among other factors, (i) the identification of certain infrastructures and contractual agreements in the scope of IFRIC 12, (ii) an 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 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 IFRS 15 for the services it performs. If the operator performs more than one service (i.e. construction or upgrade services and operation services) under a single contract or arrangement, consideration received or receivable shall be allocated by reference to the relative fair values of the services delivered, when the amounts are separately identifiable. Consequently, even though construction is subcontracted and it is not performed by Atlantica, in accordance with the provisions of IFRIC 12, the Company recognizes and measures revenue and costs for providing construction services during the period of construction of the infrastructure in accordance with IFRS 15. Construction revenue is recorded within “Other operating income” and Construction cost, which is fully contracted, is recorded within “Other operating expenses”. This applies in the same way to the two models. The useful life of these assets is approximately the same as the length of the concession arrangement. Intangible assets 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 expense is as follows: - Revenues from the updated annual revenue for the contracted concession, as well as revenues from 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. 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, using a theoretical internal return rate specific to the asset. Revenue from operations and maintenance services is recognized in each period according to IFRS 15 “Revenue from contracts with Customers”. Allowance for expected credit losses (financial assets) According to IFRS 9, Atlantica recognizes 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 applies 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, based on external sources of information, 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. b) Property, plant and equipment under IAS 16 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. Such cost includes the cost of replacing part of the plant and equipment and borrowing costs for long-term installation projects if the recognition criteria are met. Repair and maintenance costs are recognized in profit or loss as incurred. Depreciation is calculated on a straight-line basis over the estimated useful lives of the assets. The Company reviews the estimated residual values and expected useful lives of assets at least annually. In particular, the Company considers the impact of health, safety and environmental legislation in its assessment of expected useful lives and estimated residual values. An item of property, plant and equipment and any significant part initially recognized is derecognized upon disposal (i.e., at the date the recipient obtains control) or when no future economic benefits are expected from its use or disposal. Any gain or loss arising on derecognition of the asset (calculated as the difference between the net disposal proceeds and the carrying amount of the asset) is included in the statement of profit or loss when the asset is derecognized. c) Rights of use under IFRS 16 The Company assesses at contract inception whether a contract is, or contains, a lease. That is, if the contract conveys the right to control the use of an identified asset for a period of time in exchange for consideration. Company as a lessee: The Company applies a single recognition and measurement approach for all leases, except for short-term leases and leases of low-value assets. The Company recognizes lease liabilities to make lease payments and right-of-use assets representing the right to use the underlying 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 (Note 2.12). 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. d) Other intangible assets Other intangible assets acquired separately are measured on initial recognition at cost. The cost of intangible assets acquired in a business combination is their fair value at the date of acquisition. Following initial recognition, intangible assets are carried at cost less any accumulated amortization and accumulated impairment losses. Intangible assets are amortized using the straight-line method over the useful economic life and assessed for impairment whenever there is an indication that the intangible asset may be impaired. An intangible asset is derecognised upon disposal (i.e., at the date the recipient obtains control) or when no future economic benefits are expected from its use or disposal. Any gain or loss arising upon derecognition of the asset (calculated as the difference between the net disposal proceeds and the carrying amount of the asset) is included in the statement of profit or loss. Research and development costs: Research costs are expensed as incurred. Development expenditures on an individual project are recognised as an intangible asset when the Company can demonstrate: - the technical feasibility of completing the intangible asset so that the asset will be available for use or sale - its intention to complete and its ability and intention to use or sell the asset - how the asset will generate future economic benefits - the availability of resources to complete the asset - the ability to measure reliably the expenditure during development. Following initial recognition of the development expenditure as an asset, the asset is carried at cost less any accumulated amortization and accumulated impairment losses. Amortization of the asset begins when development is complete, and the asset is available for use. It is amortized using the straight-line method over the period of expected future benefit. During the period of development, the asset is tested for impairment annually. e) Asset impairment Atlantica reviews its contracted concessional, PP&E and other intangible assets to identify any indicators of impairment at least annually, except for ECL assessment for financial assets which is discussed above. 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 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 relevant 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 third-party reports, 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 located. In any case, sensitivity analyses are performed, especially in relation to 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. 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 profit and loss statement under the item “Depreciation, amortization and impairment charges”. An assessment is made at each reporting date to determine whether there is an indication that previously recognized impairment losses no longer exist or have decreased. If such indication exists, the Company estimates the CGU’s recoverable amount. A previously recognized impairment loss is reversed only if there has been a change in the assumptions used to determine the asset’s recoverable amount since the last impairment loss was recognized. The reversal is limited so that the carrying amount of the asset does not exceed its recoverable amount, nor exceed the carrying amount that would have been determined, net of depreciation, had no impairment loss been recognized for the asset in prior years. Such reversal is recognized in the profit and loss statement.
Revenue Recognition	2.4. R evenue recognition According to IFRS 15, Revenue from Contracts with Customers, the Company assesses the goods and services promised in the contracts with the customers and identifies as a performance obligation each promise to transfer to the customer a good or service (or a bundle of goods or services). In the case of contracts related to intangible or financial assets under IFRIC 12, the performance obligation of the Company is the operation of the asset. The contracts between the parties set the price of the service in an orderly transaction and therefore corresponds to the fair value of the service provided. The service is satisfied over time. The same conclusion applies to concessional assets that are classified as tangible assets under IAS 16 or leases under IFRS 16. All of the transaction prices of assets under IFRIC 12 are fixed and included as part of the long-term PPAs of the Company as disclosed in Appendix III-2. In the case of financial asset under IFRIC 12, the financial asset accounts for the payments to be received from the client over the residual life of the contract, discounted at a theoretical internal rate of return for the project. In each period, the financial asset is reduced by the amounts received from the client and increased by any capital expenditure that the project may incur and by the effect of unwinding the discount of the financial asset at the theoretical internal rate of return. The increase of the financial asset deriving from the unwinding of the discount of the financial asset is recorded as revenue in each period. Revenue will therefore differ from the actual billings made to the client in each period. In the case of Spain, according to Royal Decree 413/2014, solar electricity producers receive: (i) the market price for the power they produce, (ii) a payment based on the standard investment cost for each type of plant (without any relation whatsoever to the amount of power they generate) and (iii) an “operating payment” (in €/MWh produced). The principle driving this economic regime is that the payments received by a renewable energy producer should be equivalent to the costs that they are unable to recover on the electricity pool market where they compete with non-renewable technologies. This economic regime seeks to allow a “well-run and efficient enterprise” to recover the costs of building and running a plant, plus a reasonable return on investment (project investment rate of return). Some of the Company´s assets in Spain are receiving a remuneration based on a 7.09% reasonable rate of return until December 31, 2025 while others are receiving a remuneration based on a 7.398% reasonable rate of return until December 31, 2031.
Loans and accounts receivable	2.5. 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, Atlantica recognizes an allowance for ECL for loans and accounts receivable which 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. 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 as financial income within the consolidated statement of profit or loss.
Derivative financial instruments and hedging activities	2.6. Derivative financial instruments and hedging activities Derivatives are recognized at fair value in the statement of financial position. The Company maintains both derivatives designated as hedging instruments in hedging relationships, and derivatives to which hedge accounting is not applied. 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. The Company analyses on each date if all these requirements are met: - there is an economic relationship between the hedged item and the hedging instrument; - the effect of credit risk does not dominate the value changes that result from that economic relationship; and - the hedge ratio of the hedging relationship is the same as that resulting from the quantity of the hedged item that the Company actually hedges and the quantity of the hedging instrument that the Company uses to hedge that quantity of hedged item. Ineffectiveness is measured following the accumulated dollar offset method. In all cases, current Company´s hedging relationships are considered cash flow hedges. Under this model, 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 profit and loss statement as it occurs. When interest rate options are designated as hedging instruments, the time value is excluded from the hedging instrument as permitted by IFRS 9. Changes in the effective portion of the intrinsic 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. Changes in options time value is recorded as cost of hedging. More precisely, considering that the hedged items are, in all cases, time period hedged item, changes in time value is recognized in other comprehensive income to the extent that it relates to the hedged item. The time value at the date of designation of the option as a hedging instrument, to the extent that it relates to the hedged item, is amortized on a systematic and rational basis over the period during which the hedge adjustment for the option’s intrinsic value could affect profit or loss. 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 profit and loss 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 profit and loss statement. Any change in fair value of derivatives instruments to which hedge accounting is not applied is directly recorded in the profit and loss statement.
Fair value estimates	2.7. 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, 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 profit and loss 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 consist in valuing separately the swap part of the contract and 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	2.8. 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 cash flows is not significant. An allowance for doubtful accounts is recorded in accordance with IFRS 9, when the Company estimates it will not be able to recover all amounts due as per the original terms of the receivables.
Cash and cash equivalents	2.9. 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.
Assets held for sale	2.10. Assets held for sale The Company classifies non-current assets and disposal groups as held for sale if their carrying amounts will be recovered principally through a sale transaction rather than through continuing use. Non-current assets and disposal groups classified as held for sale are measured at the lower of their carrying amount and fair value less costs to sell. Costs to sell are the incremental costs directly attributable to the disposal of an asset (disposal group), excluding finance costs and income tax expense. The criteria for held for sale classification is regarded as met only when the sale is highly probable, and the asset or disposal group is available for immediate sale in its present condition. Actions required to complete the sale should indicate that it is unlikely that significant changes to the sale will be made or that the decision to sell will be withdrawn. Management must be committed to the plan to sell the asset and the sale expected to be completed within one year from the date of the classification. Property, plant and equipment and intangible assets are not depreciated or amortised once classified as held for sale. Assets and liabilities classified as held for sale are presented separately as current items in the statement of financial position.
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 profit and loss 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 profit and loss statement over the duration of the borrowing using the effective interest rate method. In the case of modification of terms of loans and borrowings, the Company determines whether the modification constitutes an exchange or an extinguishment of the debt instrument. In determining whether there is an exchange, the Company evaluates whether the redemption of the old debt and the issuance of new debt were negotiated in contemplation of one another (qualitative assessment) and performs the 10 per cent test to determine if the terms of the modified debt are substantially different (the net present value of the modified cash flows, including any fees paid to net of any fees received from the lenders, is higher than 10% different from the net present value of the remaining cash flows of the liability prior to the modification, both discounted at the original effective interest rate). When the terms of the modified liability are substantially different, the modification is accounted for as an extinguishment of the original liability and recognition of a new liability. 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 profit and loss 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 profit and loss statement over the term of the debt using the effective interest rate method. Convertible bonds or notes or debt issued with conversion features must be separated into liability and equity components if the feature meets the equity classification conditions in IAS 32. The issuer separates the instrument into its components by determining the fair value of the liability component and then deducting that amount from the fair value of the instrument as a whole; the residual amount is allocated to the equity component. If the equity conversion feature does not satisfy the equity classification conditions in IAS 32, it is bifurcated as an embedded derivative unless the issuer elects to apply the fair value option to the convertible debt. The embedded derivative is initially recognized at fair value and classified as derivatives in the statement of financial position. Changes in the fair value of the embedded derivatives are subsequently accounted for directly through the profit and loss statement. The debt element of the bond or note (the host contract), will be initially valued as the difference between the consideration received from the holders for the instrument and the value of the embedded derivative, and thereafter at amortized cost using the effective interest 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 tax assets and liabilities are measured at the tax rates that are expected to apply in the year when the asset is realized or the liability is settled, based on tax rates (and tax laws) that have been enacted or substantively enacted at the reporting date. Deferred tax assets are recognized to the extent that it is probable that taxable profit will be available against which the deductible temporary differences, and the carry forward of unused tax credits and unused tax losses can be utilized.
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 entity’s functional currency are translated into the entity’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 profit and loss 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. Ordinary shares are classified as equity. Any excess above the par value of shares received upon issuance of those shares is classified as share premium. Capital reserves is mainly the result of reductions of the share premium account which have increased distributable reserves. Non-controlling interest represents interest of other partners in subsidiaries included in these Consolidated Financial Statements which are not fully owned by Atlantica as of the dates presented. The costs of issuing equity instruments are accounted for as a deduction from equity.
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 measured at the present value of the expected outflows required to settle the obligation. The discount rate used is a current pre-tax rate that reflects, when appropriate, the risks specific to the liability. The increase in the provision due to the passage of time is then recognized as a financial expense. 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 of Atlantica have dismantling provisions, which are intended to cover future expenditure related to the dismantlement of the plants in situations where it is likely to be settled with an outflow of resources in the long term (over 5 years). Such provisions are recognised 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 the corresponding entry as part of the cost of the plant under the heading “Contracted concessional. PP&E and other intangible assets.” The estimated future costs of dismantling are reviewed annually if conditions have changed and adjusted appropriately. The impact of changes in the estimate of future costs or in the timing of when such costs will be incurred, on the dismantling provision, is recorded against an increase or decrease of the cost of the plant.
Earnings per share	2.19. Earnings per share Basic earnings per share is calculated by dividing the profit or loss for the period attributable to ordinary equity holders of the parent by the weighted average number of ordinary shares outstanding during the period. Diluted earnings per share is calculated by dividing the profit or loss for the period attributable to ordinary equity holders of the parent by the weighted average number of ordinary shares outstanding during the period plus the weighted average number of ordinary shares that would be issued on conversion of all the dilutive potential ordinary shares into ordinary shares.
Significant judgements and estimates	2.20. Significant judgements and estimates Some of the accounting policies applied require the application of significant judgement 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 judgements 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 judgement to determine amounts in these Consolidated Financial Statements, are as follows: Estimates: - Impairment of contracted concessional, PP&E and other intangible assets. Impairment exists when the carrying value of an asset or cash generating unit exceeds its recoverable amount, which is the higher of its fair value less costs of disposal and its value in use. The value in use calculation is based on a discounted cash flow model, which is sensitive to the discount rate used as well as projected cash-flows (Note 6). The significant assumptions which required substantial estimates used in management’s impairment calculation are discount rates and projections considering real data based on contract terms and projected changes in selling prices, energy generation and costs. - Recoverability of deferred tax assets. Deferred tax assets are recognised for unused tax losses to the extent that it is probable that taxable profit will be available against which the losses can be utilised. Significant management estimates are required to determine the amount of deferred tax assets that can be recognised, based upon the likely timing and the level of future taxable profits together with future tax planning strategies (Note 19). - Fair value of derivative financial instruments When the fair values of financial assets and financial liabilities recorded in the statement of financial position cannot be measured based on quoted prices in active markets, their fair value is measured using valuation techniques including the discounted cash flow model. The inputs to these models are taken from observable markets where possible, but where this is not feasible, a degree of estimate is required in establishing fair values. Estimates include considerations of inputs such as liquidity risk, credit risk and volatility. Changes in assumptions relating to these factors could affect the reported fair value of financial instruments (Note 10). - Fair value of identifiable assets and liabilities arising from a business combination The assets acquired and liabilities assumed on a business combination are recognised at the fair values of the underlying items. The estimates that have a significant risk of causing a material adjustment to the carrying amounts of the assets and liabilities are the ones considered when performing impairment review of operating assets (see above). Judgements: - Assessment of assets agreements. By evaluating the terms and conditions of each assets agreement, the Company determines the accounting category to which the asset belongs, e.g. IAS 16, IFRIC 12 or IFRS 16 (Note 2.3.). - Assessment of control. Judgement is required in determining the nature of Atlantica´s interest in another entity and in determining if it has control, joint control or significant influence over it (Note 2.2.). 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, 2023, 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 profit and loss statement of the year in which the change occurs.

Nature of the business (Tables)

Nature of the business (Tables)	12 Months Ended
	Dec. 31, 2023
Nature of the business [Abstract]
Overview of main assets	The following table provides an overview of the main operating assets the Company owned or had an interest in as of December : Assets Type Ownership Location Currency (9) Capacity (Gross) Counterparty Credit Ratings (10) COD* Contract Years Remaining (17) Solana Renewable (Solar) 100% Arizona (USA) USD 280 MW BBB+/A3/BBB+ 2013 20 Mojave Renewable (Solar) 100% California (USA) USD 280 MW BB/ Ba1/BB+ 2014 16 Coso Renewable (Geothermal) 100% California (USA) USD 135 MW Investment Grade (11) 1987-1989 18 Elkhorn Valley (16) Renewable (Wind) 49% Oregon (USA) USD 101 MW BBB/Baa1/-- 2007 4 Prairie Star (16) Renewable (Wind) 49% Minnesota (USA) USD 101 MW --/A3/A- 2007 4 Twin Groves II (16) Renewable (Wind) 49% Illinois (USA) USD 198 MW BB+/Baa2/-- 2008 2 Lone Star II (16) Renewable (Wind) 49% Texas (USA) USD 196 MW N/A 2008 N/A Chile PV 1 Renewable (Solar) 35% (1) Chile USD 55 MW N/A 2016 N/A Chile PV 2 Renewable (Solar) 35% (1) Chile USD 40 MW Not rated 2017 7 Chile PV 3 Renewable (Solar) 35% (1) Chile USD 73 MW N/A 2014 N/A La Sierpe Renewable (Solar) 100% Colombia COP 20 MW Not rated 2021 12 La Tolua Renewable (Solar) 100% Colombia COP 20 MW Not rated 2023 9 Tierra Linda Renewable (Solar) 100% Colombia COP 10 MW Not rated 2023 9 Honda 1 Renewable (Solar) 50% Colombia COP 10 MW BBB-/-/BBB 2023 7 Albisu Renewable (Solar) 100% Uruguay UYU 10 MW Not rated 2023 15 Palmatir Renewable (Wind) 100% Uruguay USD 50 MW BBB+/Baa2/BBB (12) 2014 10 Cadonal Renewable (Wind) 100% Uruguay USD 50 MW BBB+/Baa2/BBB (12) 2014 11 Melowind Renewable (Wind) 100% Uruguay USD 50 MW BBB+/Baa2/BBB (12) 2015 12 Mini-Hydro Renewable (Hydraulic) 100% Peru USD 4 MW BBB/Baa1/BBB 2012 9 Solaben 2 & 3 Renewable (Solar) 70% (2) Spain Euro 2x50 MW A/Baa1/A- 2012 14/14 Solacor 1 & 2 Renewable (Solar) 87% (3) Spain Euro 2x50 MW A/Baa1/A- 2012 13/13 PS10 & PS20 Renewable (Solar) 100% Spain Euro 31 MW A/Baa1/A- 2007&2009 8/10 Helioenergy 1 & 2 Renewable (Solar) 100% Spain Euro 2x50 MW A/Baa1/A- 2011 13/13 Helios 1 & 2 Renewable (Solar) 100% Spain Euro 2x50 MW A/Baa1/A- 2012 13/14 Solnova 1, 3 & 4 Renewable (Solar) 100% Spain Euro 3x50 MW A/Baa1/A- 2010 11/11/12 Solaben 1 & 6 Renewable (Solar) 100% Spain Euro 2x50 MW A/Baa1/A- 2013 15/15 Seville PV Renewable (Solar) 80% (4) Spain Euro 1 MW A/Baa1/A- 2006 12 Italy PV 1 Renewable (Solar) 100% Italy Euro 1.6 MW BBB/Baa3/BBB 2010 8 Italy PV 2 Renewable (Solar) 100% Italy Euro 2.1 MW BBB/Baa3/BBB 2011 8 Italy PV 3 Renewable (Solar) 100% Italy Euro 2.5 MW BBB/Baa3/BBB 2012 8 Italy PV 4 Renewable (Solar) 100% Italy Euro 3.6 MW BBB/Baa3/BBB 2011 8 Kaxu Renewable (Solar) 51% (5) South Africa Rand 100 MW BB-/Ba2/BB- (13) 2015 11 Calgary Efficient natural gas &heat 100% Canada CAD 55 MWt ~60% AA- or higher (14) 2010 12 ACT Efficient natural gas & heat 100% Mexico USD 300 MW BBB/B3/B+ 2013 9 Monterrey (18) Efficient natural gas &heat 30% Mexico USD 142 MW Not rated 2018 22 ATN (15) Transmission line 100% Peru USD 379 miles BBB/Baa1/BBB 2011 17 ATS Transmission line 100% Peru USD 569 miles BBB/Baa1/BBB 2014 20 ATN 2 Transmission line 100% Peru USD 81 miles Not rated 2015 9 Quadra 1 & 2 Transmission line 100% Chile USD 49 miles/32 miles Not rated 2014 11/11 Palmucho Transmission line 100% Chile USD 6 miles BBB/ -- /BBB+ 2007 14 Chile TL3 Transmission line 100% Chile USD 50 miles A/A2/A- 1993 N/A Chile TL4 Transmission line 100% Chile USD 63 miles Not rated 2016 48 Skikda Water 34.20% (6) Algeria USD 3.5 M ft3/day Not rated 2009 10 Honaine Water 25.50% (7) Algeria USD 7 M ft3/day Not rated 2012 14 Tenes Water 51% (8) Algeria USD 7 M ft3/day Not rated 2015 16 (1) 65% of (2) Itochu Corporation holds 30% of the shares in each of Solaben 2 and Solaben 3. (3) JGC holds 13% of the shares in each of Solacor 1 and Solacor 2. (4) Instituto para la Diversificación y Ahorro de la Energía (“Idae”) holds 20% of the shares in Seville PV. (5) Kaxu is owned by the Company (51%), Industrial Development Corporation of South Africa (“IDC”, 29%) and Kaxu Community Trust (20%). (6) Algerian Energy Company, SPA owns 49% of Skikda and Sacyr Agua, S.L. owns the remaining 16.8%. (7) Algerian Energy Company, SPA owns 49% of Honaine and Sacyr Agua, S.L. owns the remaining 25.5%. (8) Algerian Energy Company, SPA owns 49% of Tenes. The Company has an investment in Tenes through a secured loan to Befesa Agua Tenes (the holding company of Tenes) and the right to appoint a majority at the board of directors of the project company. Therefore, the Company controls Tenes since May 31, 2020, and fully consolidates the asset from that date. (9) Certain contracts denominated in U.S. dollars are payable in local currency. (10) 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. Not applicable (“N/A”) when the asset has no PPA. (11) Refers to the credit rating of two Community Choice Aggregators: Silicon Valley Clean Energy and Monterrey Bar Community Power, both with A Rating from S&P and Southern California Public Power Authority. The third off-taker is not rated. (12) Refers to the credit rating of Uruguay, as UTE (Administración Nacional de Usinas y Transmisoras Eléctricas) is unrated. (13) Refers to the credit rating of the Republic of South Africa. The off-taker is Eskom, which is a state-owned utility company in South Africa. (14) Refers to the credit rating of a diversified mix of 22 high credit quality clients (~60% AA- rating or higher, the rest is unrated). (15) Including ATN Expansion 1 & 2. (16) Part of Vento II Portfolio. (17) As of December 31, 2023. (18) Accounted for as held for sale as of December 31, 2023. (*) Commercial Operation Date.
Assets under construction or ready to start construction	Additionally, Atlantica currently has the following assets under construction or ready to start construction in the short term: Asset Type Location Capacity (gross) 1 Expected COD Expected Investment 2 ( $ million ) Off-taker Coso Batteries 1 Battery Storage California, US 100 MWh 2025 40-50 Investment grade utility Coso Batteries 2 Battery Storage California, US 80 MWh 2025 35-45 Investment grade utility Chile PMGD Solar PV Chile 80 MW 2024-2025 30 Regulated ATN Expansion 3 Transmission Line Peru 2.4miles 220kV 2024 12 Conelsur ATS Expansion 1 Transmission Line Peru n.a. (substation) 2025 30 Republic of Peru Honda 2 (3) Solar PV Colombia 10 MW 2024 5.5 Enel Colombia Apulo 1 (3) Solar PV Colombia 10 MW 2024 5.5 - (1) Includes nominal capacity on a 100% basis, not considering Atlantica’s ownership (2) Corresponds to the expected investment by Atlantica (3) Atlantic a owns of th

Financial information by segm_2

Financial information by segment (Tables)	12 Months Ended
	Dec. 31, 2023
Financial information by segment [Abstract]
Revenues and Adjusted EBITDA, assets and liabilities by operating segments and business sectors	a) The following tables show Revenues and Adjusted EBITDA by operating segments and business sectors for the years 2023, 2022 and 2021: Revenue Adjusted EBITDA For the year ended December 31, For the year ended December 31, Geography 2023 2022 2021 2023 2022 2021 North America 424,888 405,047 395,775 319,264 309,988 311,803 South America 188,127 166,441 154,985 146,722 126,551 119,547 EMEA 486,879 530,541 660,989 328,936 360,561 393,038 Total 1,099,894 1,102,029 1,211,749 794,922 797,100 824,388 Revenue Adjusted EBITDA For the year ended December 31, For the year ended December 31, Business sectors 2023 2022 2021 2023 2022 2021 Renewable energy 802,756 821,377 928,525 575,704 588,016 602,583 Efficient natural gas & heat 118,417 113,591 123,692 87,393 84,560 99,935 Transmission lines 123,476 113,273 105,680 96,043 88,010 83,635 Water 55,245 53,788 53,852 35,782 36,514 38,235 Total 1,099,894 1,102,029 1,211,749 794,922 797,100 824,388 The reconciliation of segment Adjusted EBITDA with the profit/(loss) attributable to the parent company is as follows: For the year ended December 31, 2023 2022 2021 Profit/(loss) attributable to the Company 43,380 (5,443 ) (30,080 ) Profit/(loss) attributable to non-controlling interest (6,932 ) 3,356 19,162 Income tax expense/(income) 790 (9,689 ) 36,220 Financial expense, net 317,974 310,934 340,892 Depreciation, amortization, and impairment charges 418,271 473,638 439,441 Depreciation and amortization, financial expense and income tax expense of unconsolidated affiliates (pro rata of Atlantica’s equity ownership) 21,439 24,304 18,753 Total segment Adjusted EBITDA 794,922 797,100 824,388
Assets and liabilities by geography	b) The assets and liabilities by geography and business sector at the end of 2023 and 2022 are as follows: Assets and liabilities by geography as of December 31, 2023: North America South America EMEA Balance as of December 31, 2023 Assets allocated Contracted concessional, PP&E and other intangible assets 3,063,019 1,184,599 2,956,649 7,204,267 Investments carried under the equity method 177,260 9,178 43,869 230,307 Other current financial assets 110,016 30,803 48,067 188,886 Cash and cash equivalents (project companies) 137,480 121,945 155,551 414,976 Assets held for sale 28,642 - - 28,642 Subtotal allocated 3,516,417 1,346,525 3,204,136 8,067,078 Unallocated assets Other non-current assets 297,577 Other current assets (including cash and cash equivalents at holding company level) 349,678 Subtotal unallocated 647,255 Total assets 8,714,333 North America South America EMEA Balance as of December 31, 2023 Liabilities allocated Long-term and short-term project debt 1,629,278 808,481 1,881,501 4,319,260 Grants and other liabilities 945,888 36,307 251,613 1,233,808 Subtotal allocated 2,575,166 844,788 2,133,114 5,553,068 Unallocated liabilities Long-term and short-term corporate debt 1,084,838 Other non-current liabilities 301,245 Other current liabilities 186,373 Subtotal unallocated 1,572,456 Total liabilities 7,125,524 Equity unallocated 1,588,809 Total liabilities and equity unallocated 3,161,265 Total liabilities and equity 8,714,333 Assets and liabilities by geography as of December 31, 2022: North America South America EMEA Balance as of December 31, 2022 Assets allocated Contracted concessional, PP&E and other intangible assets 3,167,490 1,241,879 3,073,889 7,483,259 Investments carried under the equity method 210,704 4,450 44,878 260,031 Other current financial assets 118,385 31,136 46,373 195,893 Cash and cash equivalents (project companies) 187,568 85,697 266,557 539,822 Subtotal allocated 3,684,147 1,363,162 3,431,697 8,479,005 Unallocated assets Other non-current assets 325,893 Other current assets (including cash and cash equivalents at holding company level) 296,013 Subtotal unallocated 621,906 Total assets 9,100,911 North America South America EMEA Balance as of December 31, 2022 Liabilities allocated Long-term and short-term project debt 1,713,125 841,906 1,998,021 4,553,052 Grants and other liabilities 994,874 25,031 232,608 1,252,513 Subtotal allocated 2,707,999 866,937 2,230,629 5,805,565 Unallocated liabilities Long-term and short-term corporate debt 1,017,200 Other non-current liabilities 313,328 Other current liabilities 175,771 Subtotal unallocated 1,506,299 Total liabilities 7,311,864 Equity unallocated 1,789,047 Total liabilities and equity unallocated 3,295,346 Total liabilities and equity 9,100,911
Assets and liabilities by business sectors	Assets and liabilities by business sectors as of December 31, 2023: Renewable energy Efficient natural gas & heat Transmission lines Water Balance as of December 31, 2023 Assets allocated Contracted concessional, PP&E and other intangible assets 5,798,818 460,766 777,360 167,323 7,204,267 Investments carried under the equity method 189,672 - - 40,635 230,307 Other current financial assets 10,866 103,907 30,746 43,367 188,886 Cash and cash equivalents (project companies) 299,987 35,098 58,004 21,887 414,976 Assets held for sale - 28,642 - - 28,642 Subtotal allocated 6,299,343 628,413 866,110 273,212 8,067,078 Unallocated assets Other non-current assets 297,577 Other current assets (including cash and cash equivalents at holding company level) 349,678 Subtotal unallocated 647,255 Total assets 8,714,333 Renewable energy Efficient natural gas & heat Transmission lines Water Balance as of December 31, 2023 Liabilities allocated Long-term and short-term project debt 3,280,618 401,460 560,906 76,276 4,319,260 Grants and other liabilities 1,185,487 32,916 12,884 2,521 1,233,808 Subtotal allocated 4,466,105 434,376 573,790 78,797 5,553,068 Unallocated liabilities Long-term and short-term corporate debt 1,084,838 Other non-current liabilities 301,245 Other current liabilities 186,373 Subtotal unallocated 1,572,456 Total liabilities 7,125,524 Equity unallocated 1,588,809 Total liabilities and equity unallocated 3,161,265 Total liabilities and equity 8,714,333 Assets and liabilities by business sectors as of December 31, 2022: Renewable energy Efficient natural gas & heat Transmission lines Water Balance as of December 31, 2022 Assets allocated Contracted concessional, PP&E and other intangible assets 6,035,091 485,431 800,067 162,670 7,483,259 Investments carried under the equity method 207,870 10,034 - 42,128 260,031 Other current financial assets 6,706 116,366 30,582 42,240 195,893 Cash and cash equivalents (project companies) 392,577 73,673 48,073 25,498 539,822 Subtotal allocated 6,642,244 685,504 878,722 272,536 8,479,005 Unallocated assets Other non-current assets 325,893 Other current assets (including cash and cash equivalents at holding company level) 296,013 Subtotal unallocated 621,906 Total assets 9,100,911 Renewable energy Efficient natural gas & heat Transmission lines Water Balance as of December 31, 2022 Liabilities allocated Long-term and short-term project debt 3,442,625 440,999 582,689 86,739 4,553,052 Grants and other liabilities 1,211,878 32,138 6,040 2,457 1,252,513 Subtotal allocated 4,654,503 473,137 588,729 89,196 5,805,565 Unallocated liabilities Long-term and short-term corporate debt 1,017,200 Other non-current liabilities 313,328 Other current liabilities 175,771 Subtotal unallocated 1,506,299 Total liabilities 7,311,864 Equity unallocated 1,789,047 Total liabilities and equity unallocated 3,295,346 Total liabilities and equity 9,100,911
Depreciation, amortization and impairment charges recognized	c) The amount of depreciation, amortization and impairment charges recognized for the years ended December 31, 2023, 2022 and 2021 are as follows: For the year ended December 31, Depreciation, amortization and impairment by geography 2023 2022 2021 North America (125,725 ) (182,159 ) (152,946 ) South America (77,855 ) (80,039 ) (57,214 ) EMEA (214,691 ) (211,440 ) (229,281 ) Total (418,271 ) (473,638 ) (439,441 ) For the year ended December 31, Depreciation, amortization and impairment by business sectors 2023 2022 2021 Renewable energy (398,394 ) (434,042 ) (432,138 ) Efficient natural gas & heat 9,365 (5,430 ) 23,910 Transmission lines (29,331 ) (32,466 ) (31,286 ) Water 89 (1,700 ) 73 Total (418,271 ) (473,638 ) (439,441 )

Business combinations (Tables)

Business combinations (Tables)	12 Months Ended
	Dec. 31, 2023
Business combinations [Abstract]
Amount of assets and liabilities consolidated at the effective acquisition date	The fair value of assets and liabilities consolidated at the effective acquisition date is shown in the following table: Business combinations for the year ended December 31, 2023 Property, plant and equipment under IAS 16 (Note 6) 1,565 Intangible assets under IAS 38 (Note 6) 4,486 Inventories 1,646 Other current and non-current liabilities (5,494 ) Total net assets acquired at fair value 2,203 Asset acquisition – purchase price (2,203 ) Net result of business combinations - The fair value of assets and liabilities consolidated at the effective acquisition date is shown in aggregate on the basis that they are individually not significant in the following table: Business combinations for the year ended December 31, 2022 Property, plant and equipment under IAS 16 (Note 6) 58,002 Rights of use under IFRS 16 (Lessee) or intangible assets under IAS 38 (Note 6) 16,993 Cash & cash equivalents 1,057 Other current assets 8,283 Non-current Project debt (Note 16) (1,301 ) Current Project debt (Note 16) (148 ) Other current and non-current liabilities (18,919 ) Non-controlling interest (14,300 ) Total net assets acquired at fair value 49,667 Asset acquisition – purchase price paid (49,667 ) Net result of business combinations -

Contracted concessional, PP&E_2

Contracted concessional, PP&E and other intangible assets (Tables)	12 Months Ended
	Dec. 31, 2023
Contracted concessional, PP&E and other intangible assets [Abstract]
Movements of contracted concessional, PP&E and other intangible assets	The following table shows the movements of assets included in the heading “Contracted Concessional, PP&E and other intangible assets” for 2023: Financial assets under IFRIC 12 Financial assets under IFRS 16 (Lessor) Intangible assets under IFRIC 12 Right of use assets under IFRS 16 (Lessee) and intangible assets under IAS 38 Property, plant and equipment under IAS 16 Cost Land Technical installations Total assets Total as of January 1, 2023 818,170 2,787 8,845,151 120,308 137,767 938,799 10,862,982 Additions - - 27,531 4,409 62 50,805 82,807 Subtractions - - - (644 ) - (5,487 ) (6,131 ) Business combinations (Note 5) - - - 4,486 - 1,565 6,051 Currency translation differences 5,025 (132 ) 84,060 4,756 1,515 19,847 115,071 Reclassification and other movements (38,016 ) - 348 17,632 - (11,537 ) (31,573 ) Total cost, as of December 31, 2023 785,179 2,655 8,957,090 150,947 139,344 993,992 11,029,207 Depreciation, amortization and impairment Financial assets under IFRIC 12 Financial assets under IFRS 16 (Lessor) Intangible assets under IFRIC 12 Right of use assets under IFRS 16 (Lessee) and intangible assets under IAS 38 Property, plant and equipment under IAS 16 Land Technical installations Total assets Total as of January 1, 2023 (69,557 ) - (3,088,778 ) (26,783 ) - (194,605 ) (3,379,723 ) Additions - - (358,602 ) (11,869 ) - (41,924 ) (412,395 ) Impairment charges - - - - - (16,079 ) (16,079 ) Reversal of impairment 13,378 - - - - - 13,378 Currency translation differences (199 ) - (32,084 ) (533 ) - (4,511 ) (37,327 ) Reclassification and other movements - - - 372 - 6,834 7,206 Total depreciation, amortization and impairment, as of December 31, 2023 (56,378 ) - (3,479,464 ) (38,813 ) - (250,285 ) (3,824,940 ) Total net book value, as of December 31, 2023 728,801 2,655 5,477,626 112,134 139,344 743,707 7,204,267 The following table shows the movements of assets included in the heading “Contracted Concessional, PP&E and other intangible assets” for 2022: Financial assets under IFRIC 12 Financial assets under IFRS 16 (Lessor) Intangible assets under IFRIC 12 Right of use assets under IFRS 16 (Lessee) and intangible assets under IAS 38 Property, plant and equipment under IAS 16 Cost Land Technical installations Total assets Total as of January 1, 2022 874,525 2,843 9,068,646 100,109 137,037 835,975 11,019,135 Additions - - 32,941 5,637 3,532 75,182 117,292 Subtractions - (57 ) (499 ) (1,510 ) - (8,495 ) (10,561 ) Business combinations (Note 5) - - - 16,993 - 58,002 74,995 Currency translation differences 1,760 1 (258,735 ) (4,446 ) (2,802 ) (21,090 ) (285,312 ) Reclassification and other movements (58,115 ) - 2,798 3,525 - (775 ) (52,567 ) Total cost, as of December 31, 2022 818,170 2,787 8,845,151 120,308 137,767 938,799 10,862,982 Financial assets under IFRIC 12 Financial assets under IFRS 16 (Lessor) Intangible assets under IFRIC 12 Right of use assets under IFRS 16 (Lessee) and intangible assets under IAS 38 Property, plant and equipment under IAS 16 Depreciation, amortization and impairment Land Technical installations Total assets Total as of January 1, 2022 (62,889 ) - (2,769,345 ) (21,578 ) - (143,755 ) (2,997,567 ) Additions (6,560 ) - (357,401 ) (6,865 ) - (43,414 ) (414,240 ) Impairment charges (41,238 ) - - (20,446 ) (61,684 ) Reversal of impairment - - - 859 - 7,643 8,502 Currency translation differences (108 ) - 79,206 801 - 5,367 85,266 Total depreciation, amortization and impairment, as of December 31, 2022 (69,557 ) - (3,088,778 ) (26,783 ) - (194,605 ) (3,379,723 ) Total net book value, as of December 31, 2022 748,613 2,787 5,756,373 93,525 137,767 744,194 7,483,259

Investments carried under the_2

Investments carried under the equity method (Tables)	12 Months Ended
	Dec. 31, 2023
Investments carried under the equity method [Abstract]
Investments in associates and joint ventures	The table below shows the breakdown and the movement of the investments held in associates and joint ventures for 2023 and 2022: Investments in associates and joint ventures 2023 2022 Initial balance 260,031 294,581 Share of profit 13,207 21,465 Distributions (38,780 ) (57,537 ) New entities carried under the equity method 4,439 4,901 Investment in associates classified as held for sale during the year (Note 8) (10,194 ) - Others (incl. currency translation differences) 1,604 (3,379 ) Final balance 230,307 260,031
Breakdown of investments held in associates	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 2023 and 2022 for the entities carried under the equity method: Company % Shares of the Company Non- current assets Current assets Project Other non- current liabilities Other current liabilities Revenue Operating profit/ (loss) Net profit/ (loss) Investment under the equity method 2007 Vento II, LLC (1) 49.00 411,099 25,777 - 56,508 11,285 82,849 21,024 19,752 175,351 Windlectric Inc (2) 30.00 284,618 30,884 - 159,406 77,389 21,514 8,515 (2,157 ) 1,910 Myah Bahr Honaine, S.P.A.(3) 25.50 155,338 63,451 35,569 20,240 4,653 56,172 34,576 27,084 40,635 Akuo Atlantica PMGD Holding S.P.A. (4) 49.00 56,214 7,210 24,214 18,090 13,739 192 (75 ) (83 ) 4,409 Colombian portfolio of renewable energy entities 50.00 9,092 4,970 - 9,872 956 - (587 ) 1,920 4,754 Pectonex, R.F. Proprietary Limited 50.00 1,749 - - 1 - - (149 ) (149 ) 1,337 Evacuación Valdecaballeros, S.L. 57.16 15,839 1,005 - 13,538 159 878 (59 ) (91 ) 807 Atlantica SailH2, S.L. 50.00 499 333 - - 165 - - - 653 Evacuación Villanueva del Rey, S.L. 40.02 2,218 83 - 1,308 181 - 63 - - Liberty Infraestructuras S.L. 20.00 81 357 - - - 4 (46 ) (68 ) - Fontanil Solar, S.L.U. 25.00 328 13 - 354 7 - (1 ) (18 ) 229 Murum Solar, S.L.U. 25.00 266 35 - 314 - - (1 ) (15 ) 222 As of December 31, 2023 230,307 Company % Shares of the Company Non- current assets Current assets Project debt Other non- current liabilities Other current liabilities Revenue Operating profit/ (loss) Net profit/ (loss) Investment under the equity method 2007 Vento II, LLC (1) 49.00 435,029 14,198 - 57,596 11,515 103,362 42,662 40,992 181,735 Windlectric Inc (2) 30.00 278,504 3,338 - 167,519 43,227 24,996 10,560 (15 ) 18,935 Myah Bahr Honaine, S.P.A.(3) 25.50 150,623 66,246 43,579 18,902 4,257 55,267 33,374 26,768 42,128 Akuo Atlantica PMGD Holding S.P.A. (4) 49.00 14,814 2,828 - 8,755 326 - - (348 ) 4,450 Pemcorp SAPI de CV (5) 30.00 138,931 112,352 159,382 90,474 4,328 45,625 1,680 (17,747 ) 10,034 Pectonex, R.F. Proprietary Limited 50.00 2,045 - - - 1 - (168 ) (168 ) 1,411 Evacuación Valdecaballeros, S.L. 57.16 15,551 1,020 - 13,635 232 860 (60 ) (89 ) 858 Evacuación Villanueva del Rey, S.L. 40.02 2,317 12 - 1,386 111 - 57 - - Liberty Infraestructuras S.L. 20.00 93 283 - - 37 - - (22 ) 29 Fontanil Solar, S.L.U. 25.00 117 7 - 99 24 - (1 ) (2 ) 229 Murum Solar, S.L.U. 25.00 228 8 - 180 59 - (1 ) (5 ) 222 As of December 31, 2022 260,031 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. (1) 2007 Vento II, LLC, is the holding company of a 596 MW portfolio of wind assets in the U.S., 49% owned by Atlantica since June 16, 2021, and accounted for under the equity method in these Consolidated Financial Statements. Share of profit of 2007 Vento II, LLC . included in these Consolidated Financial Statements amounts to $9.7 million in 2023 and $20.1 million in 2022. (2) Windlectric Inc., the project entity, is 100% owned by Amherst Island Partnership which is accounted for under the equity method in these Consolidated Financial Statements . (3) 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. Geida Tlemcen, S.L. is 50% owned by Atlantica. Share of profit of Myah Bahr Honaine S.P.A. included in these Consolidated Financial Statements amounts to $6.9 million in 2023 and $6.8 million in 2022. (4) Akuo Atlantica PMGD Holding S.P.A. is the holding company of a 80 MW portfolio of solar PV assets in Chile, which is currently under construction, 49% owned by Atlantica, with joint control since November 2022 and accounted for under the equity method in these Consolidated Financial Statement s. (5) Pemcorp SAPI de CV, Monterrey´s project entity, is 100% owned by Arroyo Netherlands II B.V., which was accounted for under the equity method in the Consolidated Financial Statements as of December 31, 2022. Arroyo Netherlands II B.V. is 30% owned by Atlantica. The investment held by Atlantica in Pemcorp has been classified as held for sale in these Consolidated Financial (Note 8). Share of profit of Pemcorp SAPI de CV included in these Consolidated Financial Statements amounts to a $0.2 million profit in 2023 and a $5.3 million loss in 2022.

Financial instruments by cate_2

Financial instruments by category (Tables)	12 Months Ended
	Dec. 31, 2023
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, 2023 Derivative assets 10 - - 61,697 61,697 Investment in Ten West Link - 11,719 - 11,719 Financial assets under IFRIC 12 (short-term portion) (*) 177,407 - - 177,407 Trade and other receivables 12 286,483 - - 286,483 Cash and cash equivalents 13 448,301 - - 448,301 Other financial assets 74,645 - - 74,645 Total financial assets 986,836 11,719 61,697 1,060,252 Corporate debt (**) 15 1,084,838 - - 1,084,838 Project debt (**) 16 4,319,260 - - 4,319,260 Lease liabilities (non-current portion) 17 82,366 - - 82,366 Trade and other current liabilities 18 141,713 - - 141,713 Derivative liabilities 10 - - 29,957 29,957 Total financial liabilities 5,628,177 - 29,957 5,658,134 Notes Amortized cost Fair value through other comprehensive income Fair value through profit or loss Balance as of December 31, 2022 Derivative assets 10 - - 97,381 97,381 Investment in Ten West Link - 15,959 - 15,959 Financial assets under IFRIC 12 (short-term portion) (*) 186,841 - - 186,841 Trade and other receivables 12 200,334 - - 200,334 Cash and cash equivalents 13 600,990 - - 600,990 Other financial assets 71,949 - - 71,949 Total financial assets 1,060,114 15,959 97,381 1,173,454 Corporate debt (**) 15 1,017,200 - - 1,017,200 Project debt (**) 16 4,553,052 - - 4,553,052 Lease liabilities (non-current portion) 17 63,076 - - 63,076 Trade and other current liabilities 18 140,230 - - 140,230 Derivative liabilities 10 - - 16,847 16,847 Total financial liabilities 5,773,558 - 16,847 5,790,405 (*) The long-term portion of Financial assets under IFRIC 12 is included within the line Contracted concessional, PP&E and other intangible assets (Note 6). (**) The percentage of Corporate and Project debt at fixed interest or hedged is 94% and 92% respectively as of December 31, 2023 (96% and 92% respectively as of December 31, 2022).
Financial liabilities	Notes Amortized cost Fair value through other comprehensive income Fair value through profit or loss Balance as of December 31, 2023 Derivative assets 10 - - 61,697 61,697 Investment in Ten West Link - 11,719 - 11,719 Financial assets under IFRIC 12 (short-term portion) (*) 177,407 - - 177,407 Trade and other receivables 12 286,483 - - 286,483 Cash and cash equivalents 13 448,301 - - 448,301 Other financial assets 74,645 - - 74,645 Total financial assets 986,836 11,719 61,697 1,060,252 Corporate debt (**) 15 1,084,838 - - 1,084,838 Project debt (**) 16 4,319,260 - - 4,319,260 Lease liabilities (non-current portion) 17 82,366 - - 82,366 Trade and other current liabilities 18 141,713 - - 141,713 Derivative liabilities 10 - - 29,957 29,957 Total financial liabilities 5,628,177 - 29,957 5,658,134 Notes Amortized cost Fair value through other comprehensive income Fair value through profit or loss Balance as of December 31, 2022 Derivative assets 10 - - 97,381 97,381 Investment in Ten West Link - 15,959 - 15,959 Financial assets under IFRIC 12 (short-term portion) (*) 186,841 - - 186,841 Trade and other receivables 12 200,334 - - 200,334 Cash and cash equivalents 13 600,990 - - 600,990 Other financial assets 71,949 - - 71,949 Total financial assets 1,060,114 15,959 97,381 1,173,454 Corporate debt (**) 15 1,017,200 - - 1,017,200 Project debt (**) 16 4,553,052 - - 4,553,052 Lease liabilities (non-current portion) 17 63,076 - - 63,076 Trade and other current liabilities 18 140,230 - - 140,230 Derivative liabilities 10 - - 16,847 16,847 Total financial liabilities 5,773,558 - 16,847 5,790,405 (*) The long-term portion of Financial assets under IFRIC 12 is included within the line Contracted concessional, PP&E and other intangible assets (Note 6). (**) The percentage of Corporate and Project debt at fixed interest or hedged is 94% and 92% respectively as of December 31, 2023 (96% and 92% respectively as of December 31, 2022).

Derivative financial instrume_2

Derivative financial instruments (Tables)	12 Months Ended
	Dec. 31, 2023
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, 2023 and 2022 are as follows: Balance as of December 31, 2023 Balance as of December 31, 2022 Assets Liabilities Assets Liabilities Interest rate cash flow hedge 60,102 29,163 94,192 12,159 Foreign exchange derivatives instruments 1,595 - 3,189 - Notes conversion option (Note 15) - 794 - 4,688 Total 61,697 29,957 97,381 16,847
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, 2023 and 2022. Notionals Balance as of December 31, 2023 Balance as of December 31, 2022 Assets Liabilities Assets Liabilities Up to 1 year 248,898 43,013 245,147 47,029 Between 1 and 2 years 279,215 95,701 310,393 102,476 Between 2 and 3 years 314,644 104,848 217,498 112,855 Subsequent years 523,564 264,563 659,186 280,016 Total 1,366,321 508,125 1,432,224 542,376 The table below shows a breakdown of the maturity of the fair values of interest rate cash flow hedge derivatives as of December 31, 2023 and 2022: Fair value Balance as of December 31, 2023 Balance as of December 31, 2022 Assets Liabilities Assets Liabilities Up to 1 year 3,957 (1,740 ) 10,868 (991 ) Between 1 and 2 years 10,124 (5,347 ) 17,860 (2,189 ) Between 2 and 3 years 12,070 (5,848 ) 12,257 (2,851 ) Subsequent years 33,951 (16,228 ) 53,207 (6,128 ) Total 60,102 (29,163 ) 94,192 (12,159 )

Related parties (Tables)

Related parties (Tables)	12 Months Ended
	Dec. 31, 2023
Related parties [Abstract]
Related party receivables and payables	Details of balances with related parties as of December 31, 2023 and 2022 are as follows: As of December 31, Receivables (current) Receivables (non- current) Payables (current) Payables (non- current) Entities accounted for under the equity method: Arroyo Netherland II B.V (Note 8) 2023 18,448 - - - 2022 1,097 17,006 - - Amherst Island Partnership 2023 5,817 - - - 2022 - - - - Akuo Atlantica PMGD Holding 2023 - 16,677 - - 2022 - 504 - - Colombian assets portfolio 2023 - 13,578 34 - 2022 - - - - Other 2023 21 148 - - 2022 127 - - - Non controlling interest: Algonquin 2023 - - 5,683 - 2022 - - 4,762 - JGC Corporation 2023 - - - 4,612 2022 - - - 6,088 Other 2023 - - 2,314 27 2022 - - 1,311 - Other related parties: Atlantica´s partner in Colombia (Note 7) 2023 918 - - - 2022 - - - - Total 2023 25,204 30,403 8,031 4,639 2022 1,224 17,510 6,073 6,088
Related party transactions	The transactions carried out by entities included in these Consolidated Financial Statements with related parties for the years ended December 31, 2023, 2022 and 2021 have been as follows: Financial income Financial expense Operating income Entities accounted for under the equity method: Arroyo Netherland II B.V 2023 1,845 - - 2022 1,275 - - 2021 2,061 - - Akuo Atlantica PMGD Holding 2023 607 - 316 2022 - - - 2021 - - - Colombian assets portfolio 2023 588 - - 2022 - - - 2021 - - - Other 2023 - - 9 2022 - - - 2021 - - - Non controlling interest: Other 2023 - (471 ) - 2022 23 (153 ) - 2021 8 (97 ) - Total 2023 3,040 (471 ) 325 2022 1,298 (153 ) - 2021 2,069 (97 ) -

Trade and other receivables (Ta

Trade and other receivables (Tables)	12 Months Ended
	Dec. 31, 2023
Trade and other receivables [Abstract]
Trade and other receivables	Trade and other receivable as of December 31, 2023 and 2022, consist of the following: Balance as of December 31, 2023 2022 Trade receivables 213,345 125,437 Tax receivables 37,134 45,680 Prepayments 12,717 11,827 Other accounts receivable 23,287 17,390 Total 286,483 200,334
Trade receivables in foreign currency	Trade receivables in foreign currency as of December 31, 2023 and 2022, are as follows: Balance as of December 31, 2023 2022 Euro 53,012 4,088 South African Rand - 23,416 Chilean peso 4,431 5,037 Mexican peso 4,557 1,298 Other 4,376 2,676 Total 66,376 36,515

Cash and cash equivalents (Tabl

Cash and cash equivalents (Tables)	12 Months Ended
	Dec. 31, 2023
Cash and cash equivalents [Abstract]
Cash and cash equivalents	The following table shows the detail of Cash and cash equivalents as of December 31, 2023 and 2022: Balance as of December 31, 2023 2022 Cash at bank and on hand - non restricted 271,329 393,430 Cash at bank and on hand - restricted 176,972 207,560 Total 448,301 600,990 The following breakdown shows the main currencies in which cash and cash equivalent balances are denominated: Balance as of December 31, Currency 2023 2022 U.S. dollar 266,200 309,756 Euro 102,820 217,675 South African Rand 30,908 36,137 Mexican Peso 13,455 4,010 Algerian Dinar 21,168 24,727 Other 13,750 8,685 Total 448,301 600,990

Equity (Tables)

Equity (Tables)	12 Months Ended
	Dec. 31, 2023
Equity [Abstract]
Disclosure of Dividends Declared	Dividends declared during the year 2023 and the first quarter of 2024 by the Board of Directors of the Company were as follows: Declared Payable Amount ($) per share February 29, 2024 March 22, 2024 0.445 November 7, 2023 December 15, 2023 0.445 July 31, 2023 September 15, 2023 0.445 May 4, 2023 June 15, 2023 0.445 February 28, 2023 March 25, 2023 0.445 Dividends declared during the year 2022 by the Board of Directors of the Company were as follows: Declared Payable Amount ($) per share November 8, 2022 December 15, 2022 0.445 August 2, 2022 September 15, 2022 0.445 May 5, 2022 June 15, 2022 0.44 February 25, 2022 March 25, 2022 0.44

Corporate debt (Tables)

Corporate debt (Tables)	12 Months Ended
	Dec. 31, 2023
Corporate debt [Abstract]
Corporate debt	The breakdown of the corporate debt as of December 31, 2023 and 2022 is as follows: Balance as of December 31, 2023 2022 Non-current 1,050,816 1,000,503 Current 34,022 16,697 Total Corporate debt 1,084,838 1,017,200
Repayment schedule for corporate debt	The repayment schedule for the corporate debt as of December 31, 2023 is as follows: 2024 2025 2026 2027 2028 Total 2017 Credit Facility 13 9,876 - - - 9,889 Revolving Credit Facility 261 54,427 - - - 54,688 Commercial Paper 25,691 - - - - 25,691 2020 Green Private Placement 174 - 318,668 - - 318,842 2020 Note Issuance Facility - - - 152,356 - 152,356 Green Exchangeable Notes 2,108 110,020 - - - 112,128 Green Senior Note 963 - - - 395,964 396,927 Other bank Loans 4,812 4,736 2,288 1,642 839 14,317 Total 34,022 179,059 320,956 153,998 396,803 1,084,838 The repayment schedule for the corporate debt as of December 31, 2022 was as follows: 2023 2024 2025 2026 2027 Subsequent years Total 2017 Credit Facility 8 6,423 - - - - 6,431 Revolving Credit Facility 112 29,387 - - - - 29,499 Commercial Paper 9,937 - - - - - 9,937 2020 Green Private Placement 423 - - 308,389 - - 308,812 2020 Note Issuance Facility - - - - 147,257 - 147,257 Green Exchangeable Notes 2,107 - 107,055 - - - 109,162 Green Senior Note 964 - - - - 395,060 396,024 Other bank Loans 3,146 3,122 3,124 686 - - 10,078 Total 16,697 38,932 110,179 309,075 147,257 395,060 1,017,200
Movement in corporate debt	The following table details the movement in corporate debt for the year 2023: Corporate debt - long term Corporate debt - short term Total Balance as of December 31, 2022 1,000,503 16,697 1,017,200 Nominal increase 35,648 126,537 162,185 Nominal repayment - (115,891 ) (115,891 ) Interest payment - (40,573 ) (40,573 ) Total cash changes 35,648 (29,927 ) 5,721 Interest accrued - 40,570 40,570 Currency translation differences 15,037 1,255 16,292 Other non-cash changes 5,055 - 5,055 Reclassifications (5,427 ) 5,427 - Total non-cash changes 14,665 47,252 61,917 Balance as of December 31, 2023 1,050,816 34,022 1,084,838 The following table details the movement in corporate debt for the year 2022: Corporate debt - long term Corporate debt - short term Total Balance as of December 31, 2021 995,190 27,881 1,023,071 Nominal increase 35,574 65,566 101,140 Nominal repayment (1,323 ) (79,196 ) (80,519 ) Interest payment - (38,117 ) (38,117 ) Total cash changes 34,251 (51,747 ) (17,496 ) Interest accrued - 38,321 38,321 Currency translation differences (29,419 ) (1,423 ) (30,842 ) Other non-cash changes 4,146 - 4,146 Reclassifications (3,665 ) 3,665 - Total non-cash changes (28,938 ) 40,563 11,625 Balance as of December 31, 2022 1,000,503 16,697 1,017,200

Project debt (Tables)

Project debt (Tables)	12 Months Ended
	Dec. 31, 2023
Project debt [Abstract]
Project debt	The variations in 2023 of project debt have been the following: Project debt - long term Project debt - short term Total Balance as of December 31, 2022 4,226,518 326,534 4,553,052 Nominal increase 213,232 - 213,232 Nominal repayment (4,768 ) (513,576 ) (518,344 ) Interest payment - (227,145 ) (227,145 ) Total cash changes 208,464 (740,721 ) (532,257 ) Interest accrued - 227,418 227,418 Currency translation differences 28,808 7,150 35,958 Other non-cash changes 35,024 65 35,089 Reclassifications (566,941 ) 566,941 - Total non-cash changes (503,109 ) 801,574 298,465 Balance as of December 31, 2023 3,931,873 387,387 4,319,260 The variations in 2022 of project debt were the following: Project debt - long term Project debt - short term Total Balance as of December 31, 2021 4,387,674 648,519 5,036,193 Nominal repayment (73,478 ) (310,629 ) (384,107 ) Interest payment - (232,855 ) (232,855 ) Total cash changes (73,478 ) (543,484 ) (616,962 ) Interest accrued - 230,237 230,237 Business combination (Note 5) 1,301 148 1,449 Currency translation differences (119,068 ) (18,040 ) (137,108 ) Other non-cash changes 39,161 82 39,243 Reclassifications (9,072 ) 9,072 - Total non-cash changes (87,678 ) 221,499 133,821 Balance as of December 31, 2022 4,226,518 326,534 4,553,052
Repayment schedule for project debt	The repayment schedule for project debt in accordance with the financing arrangements as of December 31, 2023, and assuming there would be no acceleration at the Chile PV 1 and Chile PV 2 debts as of December 31, 2023, is as follows and is consistent with the projected cash flows of the related projects: 2024 2025 2026 2027 2028 Subsequent years Total Interest payment Nominal repayment 15,215 305,087 325,303 352,495 499,968 464,648 2,356,544 4,319,260 The repayment schedule for project debt in accordance with the financing arrangements was as follows and was consistent with the projected cash flows of the related projects: 2023 2024 2025 2026 2027 Subsequent years Total Interest payment Nominal repayment 15,053 311,481 323,731 442,920 358,444 504,954 2,596,469 4,553,052
Foreign currency-denominated project debt	The equivalent in U.S. dollars of the foreign currency-denominated project debts held by the Company is as follows: Balance as of December 31, Currency 2023 2022 Euro 1,571,369 1,633,790 South African Rand 233,854 277,492 Algerian Dinar 76,277 86,739 Total 1,881,500 1,998,021

Grants and other liabilities (T

Grants and other liabilities (Tables)	12 Months Ended
	Dec. 31, 2023
Grants and other liabilities [Abstract]
Grants and other non-current liabilities	Grants and other liabilities as of December 31, 2023 and December 31, 2022 are as follows: Balance as of December 31, 2023 2022 Grants 852,854 911,593 Other liabilities and provisions 380,954 340,920 Dismantling provision 155,279 140,595 Lease liabilities 82,366 63,076 Accruals on Spanish market prices differences 98,820 91,884 Other 44,489 45,365 Grant and other non-current liabilities 1,233,808 1,252,513
Maturity of other liabilities and provisions	The maturity of Other liabilities and provisions is as follows As of December 31, 2023 Total 2024 2025 2026 2027 2028 Subsequent Other liabilities and provisions 380,954 - 26,503 21,714 22,975 22,367 287,395 Total 380,954 - 26,503 21,714 22,975 22,367 287,395 As of December 31, 2022 Total 2023 2024 2025 2026 2027 Subsequent Other liabilities and provisions 340,920 - 26,393 20,096 20,561 20,867 253,003 Total 340,920 - 26,393 20,096 20,561 20,867 253,003

Trade payables and other curr_2

Trade payables and other current liabilities (Tables)	12 Months Ended
	Dec. 31, 2023
Trade payables and other current liabilities [Abstract]
Trade payables and other current liabilities	Trade payables and other current liabilities as of December 31, 2023 and 2022 are as follows: Balance as of December 31, Item 2023 2022 Trade accounts payables 77,266 84,465 Accruals on Spanish market prices differences (Note 17) 12,475 11,936 Down payments from clients and other deferred income 16,905 11,169 Other accounts payables 35,067 32,660 Total 141,713 140,230

Income Tax (Tables)

Income Tax (Tables)	12 Months Ended
	Dec. 31, 2023
Income Tax [Abstract]
Analysis of deferred tax assets and liabilities	As of December 31, 2023, and 2022, the analysis of deferred tax assets and deferred tax liabilities is as follows: Deferred tax assets Balance as of December 31, From 2023 2022 Net operating loss carryforwards (“NOL´s”) 478,179 442,415 Temporary tax non-deductible expenses 158,201 134,328 Derivatives financial instruments 6,855 3,461 Other 20,800 5,895 Total deferred tax assets 664,035 586,099 Deferred tax liabilities Balance as of December 31, From 2023 2022 Accelerated tax amortization 589,111 524,363 Other difference between tax and book value of assets 154,875 186,536 Derivatives financial instruments 12,989 19,034 Other 17,353 2,991 Total deferred tax liabilities 774,328 732,924
Consolidated balance sheets classifications	After offsetting deferred tax assets and deferred tax liabilities, where applicable Consolidated balance sheets classifications Balance as of December 31, 2023 2022 Deferred tax assets 160,995 149,656 Deferred tax liabilities 271,288 296,481 Net deferred tax liabilities 110,293 146,825
Movements in deferred tax assets and liabilities	The movements in deferred tax assets and liabilities during the years ended December 31, 2023 and 2022 were as follows: Deferred tax assets Amount As of December 31, 2021 172,268 Increase/(decrease) through the consolidated profit and loss statement 29,197 Increase/(decrease) through other consolidated comprehensive income (equity) (46,344 ) Currency translation differences and other (5,465 ) As of December 31, 2022 149,656 Increase/(decrease) through the consolidated profit and loss statement 7,327 Increase/(decrease) through other consolidated comprehensive income (equity) 2,207 Currency translation differences and other 1,805 As of December 31, 2023 160,995 Deferred tax liabilities Amount As of December 31, 2021 308,859 Increase/(decrease) through the consolidated profit and loss statement (19,864 ) Increase/(decrease) through other consolidated comprehensive income (equity) 17,608 Currency translation differences and other (10,122 ) As of December 31, 2022 296,481 Increase/(decrease) through the consolidated profit and loss statement (27,055 ) Increase/(decrease) through other consolidated comprehensive income (equity) (5,830 ) Currency translation differences and other 7,692 As of December 31, 2023 271,288
Income tax expense	Details of income tax for the years ended December 31, 2023, 2022 and 2021 are as follows: For the year ended December 31, 2023 2022 2021 Current tax (35,172 ) (39,372 ) (51,016 ) Deferred tax 34,382 49,061 14,796 - relating to the origination and reversal of temporary differences 34,382 49,061 14,796 Total income tax (expense)/income (790 ) 9,689 (36,220 )
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)/income recognized in the consolidated profit and loss statements for the years ended December 31, 2023, 2022, and 2021, is as follows: For the year ended December 31, 2023 2022 2021 Consolidated profit/(loss) before taxes 37,238 (11,776 ) 25,302 Average statutory tax rate 25 % 25 % 25 % Corporate income tax at average statutory tax rate (9,310 ) 2,944 (6,326 ) Income tax of associates, net 3,302 5,366 3,076 Differences in statutory tax rates (4,270 ) (4,296 ) (3,359 ) Unrecognized NOLs and deferred tax assets (11,070 ) (10,944 ) (11,232 ) Permanent differences 17,493 3,957 (4,052 ) Other adjustments to taxable income and expense 3,065 12,662 (14,327 ) Corporate income tax (790 ) 9,689 (36,220 )

Commitments, third-party guar_2

Commitments, third-party guarantees, contingent assets and liabilities (Tables)	12 Months Ended
	Dec. 31, 2023
Commitments, third-party guarantees, contingent assets and liabilities [Abstract]
Contractual obligations	The following tables show the breakdown of the third-party commitments and contractual obligations as of December 31, 2023 and 2022: 2023 Total 2024 2025 2026 2027 2028 Subsequent Corporate debt (Note 15) 1,084,838 34,022 179,059 320,956 153,998 396,803 - Loans with credit institutions (Project debt) (Note 16) 3,393,767 265,649 273,015 298,527 443,503 406,282 1,706,791 Notes and bonds (Project debt) (Note 16) 925,493 54,653 52,288 53,968 56,465 58,366 649,753 Purchase commitments* 713,509 81,868 52,814 47,164 51,768 45,243 434,652 Accrued interest estimate during the useful life of loans 1,717,831 264,223 257,379 224,032 198,073 161,346 612,778 2022 Total 2023 2024 2025 2026 2027 Subsequent Corporate debt (Note 15) 1,017,200 16,697 38,932 110,179 309,075 147,257 395,060 Loans with credit institutions (Project debt) (Note 16) 3,595,671 273,556 275,105 391,770 305,616 449,653 1,899,971 Notes and bonds (Project debt) (Note 16) 957,381 52,978 48,626 51,150 52,828 55,301 696,498 Purchase commitments* 823,856 96,847 99,597 54,747 51,058 56,852 464,755 Accrued interest estimate during the useful life of loans 1,821,915 264,626 248,794 229,142 203,961 179,386 696,006

Employee benefit expenses (Tabl

Employee benefit expenses (Tables)	12 Months Ended
	Dec. 31, 2023
Employee benefit expenses [Abstract]
Employee benefit expenses	The table below shows the employee benefit expenses and the average number of employees for the years ended December 31, 2023, 2022 and 2021: For the year ended December 31, 2023 2022 2021 Employee benefit expenses 104,083 80,232 78,758 Average number of employees 1,304 874 655

Other operating income and ex_2

Other operating income and expenses (Tables)	12 Months Ended
	Dec. 31, 2023
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, 2023, 2022 and 2021: For the year ended December 31, Other operating income 2023 2022 2021 Grants 58,742 59,056 60,746 Insurance proceeds and other 35,731 21,726 13,925 Income from construction services for contracted concessional assets of the Company accounted for under IFRIC 12 6,614 - - Total 101,087 80,782 74,670
Other operating expenses	For the year ended December 31, Other operating expenses 2023 2022 2021 Raw materials and consumables used (35,380 ) (19,639 ) (70,690 ) Leases and fees (14,403 ) (11,512 ) (9,332 ) Operation and maintenance (130,442 ) (140,382 ) (154,007 ) Independent professional services (30,656 ) (38,894 ) (39,177 ) Supplies (37,822 ) (59,336 ) (40,790 ) Insurance (41,087 ) (45,756 ) (45,429 ) Levies and duties (15,031 ) (19,764 ) (29,949 ) Other expenses (25,187 ) (15,965 ) (24,957 ) Construction costs from construction services for contracted concessional assets of the Company accounted for under IFRIC 12 (6,614 ) - - Total (336,622 ) (351,248 ) (414,330 )

Financial expense, net (Tables)

Financial expense, net (Tables)	12 Months Ended
	Dec. 31, 2023
Financial expense, net [Abstract]
Financial income	The following table sets forth financial income and expense for the years ended December 31, 2023, 2022 and 2021: For the year ended December 31, Financial income 2023 2022 2021 Interest income on deposits and current accounts 21,715 7,740 3,580 Interest income from loans and credits 2,942 1,299 2,066 Interest rates gains on derivatives: cash flow hedges 350 1,110 316 Total 25,007 10,149 5,962
Financial expense	For the year ended December 31, Financial expense 2023 2022 2021 Interest on loans and notes (350,347 ) (292,043 ) (302,558 ) Interest rates gains/(losses) on derivatives: cash flow hedges 26,598 (38,402 ) (58,340 ) Total (323,749 ) (330,445 ) (360,898 )
Other financial income/(expense), net	The following table sets out Other financial income/(expense), net for the years 2023, 2022 and 2021: For the year ended December 31, Other financial income/(expense), net 2023 2022 2021 Other financial income 8,863 20,539 28,742 Other financial losses (25,546 ) (21,434 ) (16,571 ) Total (16,683 ) (895 ) 12,171

Earnings per share (Tables)

Earnings per share (Tables)	12 Months Ended
	Dec. 31, 2023
Earnings per share [Abstract]
Earnings per share	Average number of outstanding diluted shares for the year 2023 have been calculated considering the potential issuance of 3,347,305 shares (3,347,305 shares as of December 31, 2022, and December 31, 2021) on the settlement of the Green Exchangeable Notes (Note 15) and the potential issuance of 217,418 shares (226,032 as of December 31, 2022 and 327,749 shares as of December 31, 2021) under the long-term incentive plans granted to employees. It also included the potential issuance of 596,681 shares to Algonquin for the year 2022 (725,041 shares as of December 31, 2021) under the agreement signed on August 3, 2021, according to which Algonquin has the option, on a quarterly basis, to subscribe such number of shares to maintain its percentage in Atlantica in relation to the use of the ATM program (Note 14). For the year ended December 31, Item 2023 2022 2021 Profit/(loss) attributable to Atlantica 43,380 (5,443 ) (30,080 ) Average number of ordinary shares outstanding (thousands) - basic 116,152 114,695 111,008 Average number of ordinary shares outstanding (thousands) - diluted 119,720 118,865 115,408 Earnings per share for the year (US dollar per share) - basic 0.37 (0.05 ) (0.27 ) Earnings per share for the year (US dollar per share) - diluted (*) 0.37 (0.09 ) (0.28 ) (*) The potential ordinary shares related to the Green Exchangeable Notes and the long-term incentive plans granted to employees have not been considered in the calculation of diluted earnings per share for the year ended December 31, 2023, as they have an antidilutive effect. For the years ended December 31, 2022, and December 31, 2021, the potential ordinary shares related to the long-term incentive plans granted to employees and the ATM program have not been considered in the calculation of diluted earnings per share as they have an antidilutive effect.

Nature of the business, Descrip

Nature of the business, Description (Details) $ in Thousands						12 Months Ended
	Nov. 30, 2022 MW	Nov. 16, 2022 USD ($) MW	Sep. 02, 2022 USD ($) MWh MW	Apr. 04, 2022 USD ($) MW	Jan. 17, 2022 USD ($) Substation MW	Dec. 31, 2023 USD ($) Asset MW		Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Nature of the business [Abstract]
Percentage of revenue						74%
Number of assets under construction | Asset						4
Investments accounted for using equity method | $						$ 230,307		$ 260,031	$ 294,581
Percentage of interest acquired	49%
Proportion of voting rights held by non-controlling interests						70%
Albisu [Member]
Nature of the business [Abstract]
Gross capacity						10
Period of PPA						15 years
la Tolua and Tierra Linda [Member]
Nature of the business [Abstract]
Number of assets under construction | Asset						2
Gross capacity						30
Period of PPA						10 years
Honda 1 [Member]
Nature of the business [Abstract]
Gross capacity						10
Period of PPA						7 years
Percentage of interest acquired						50%
Chile TL4 [Member]
Nature of the business [Abstract]
Gross capacity					63
Period of PPA						50 years
Installed capacity					63
Number of substations | Substation					2
Investments accounted for using equity method | $					$ 38,400	$ 8,000
Italy PV 4 [Member]
Nature of the business [Abstract]
Gross capacity				3.6
Installed capacity				3.6
Investments accounted for using equity method | $				$ 3,700
Chile PV 3 [Member]
Nature of the business [Abstract]
Gross capacity			73
Installed capacity			73
Investments accounted for using equity method | $			$ 7,700
Percentage of interest acquired			35%
Batteries capacity expected to install | MWh			100
Chile PV 3 [Member] | Bottom of range [member]
Nature of the business [Abstract]
Investments accounted for using equity method | $			$ 15,000
Chile PV 3 [Member] | Top of range [member]
Nature of the business [Abstract]
Investments accounted for using equity method | $			$ 25,000
Chile PMGD [Member]
Nature of the business [Abstract]
Gross capacity	80
Installed capacity		80
Investments accounted for using equity method | $		$ 30,000				$ 30,000	[1]
Percentage of interest acquired		49%
Proportion of voting rights held by non-controlling interests		70%
Chile PMGD [Member] | Top of range [member]
Nature of the business [Abstract]
Installed capacity		9
[1]Corresponds to the expected investment by Atlantica

Nature of the business, Concess

Nature of the business, Concessional assets owned (Details)		12 Months Ended
		Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Nature of the business [Abstract]
Ownership			49%	49%
ACT [Member]
Nature of the business [Abstract]
Type		Efficient natural gas & heat
Ownership		100%
Location		Mexico
Currency	[1]	USD
Capacity (gross)		300 MW
Counterparty credit ratings	[2]	BBB/B3/B+
COD	[3]	2013
Contract years remaining	[4]	9 years
Monterrey [Member]
Nature of the business [Abstract]
Type	[5]	Efficient natural gas &heat
Ownership	[5]	30%
Location	[5]	Mexico
Currency	[1],[5]	USD
Capacity (gross)	[5]	142 MW
Counterparty credit ratings	[2],[5]	Not rated
COD	[3],[5]	2018
Contract years remaining	[4],[5]	22 years
ATN [Member]
Nature of the business [Abstract]
Type	[6]	Transmission line
Ownership	[6]	100%
Location	[6]	Peru
Currency	[1],[6]	USD
Capacity (gross)	[6]	379 miles
Counterparty credit ratings	[2],[6]	BBB/Baa1/BBB
COD	[3],[6]	2011
Contract years remaining	[4],[6]	17 years
ATS [Member]
Nature of the business [Abstract]
Type		Transmission line
Ownership		100%
Location		Peru
Currency	[1]	USD
Capacity (gross)		569 miles
Counterparty credit ratings	[2]	BBB/Baa1/BBB
COD	[3]	2014
Contract years remaining	[4]	20 years
ATN 2 [Member]
Nature of the business [Abstract]
Type		Transmission line
Ownership		100%
Location		Peru
Currency	[1]	USD
Capacity (gross)		81 miles
Counterparty credit ratings	[2]	Not rated
COD	[3]	2015
Contract years remaining	[4]	9 years
Quadra 1 & 2 [Member]
Nature of the business [Abstract]
Type		Transmission line
Ownership		100%
Location		Chile
Currency	[1]	USD
Capacity (gross)		49 miles/32 miles
Counterparty credit ratings	[2]	Not rated
COD	[3]	2014
Quadra 1 [Member]
Nature of the business [Abstract]
Contract years remaining	[4]	11 years
Quadra 2 [Member]
Nature of the business [Abstract]
Contract years remaining	[4]	11 years
Palmucho [Member]
Nature of the business [Abstract]
Type		Transmission line
Ownership		100%
Location		Chile
Currency	[1]	USD
Capacity (gross)		6 miles
Counterparty credit ratings	[2]	BBB/ -- /BBB+
COD	[3]	2007
Contract years remaining	[4]	14 years
Chile TL3 [Member]
Nature of the business [Abstract]
Type		Transmission line
Ownership		100%
Location		Chile
Currency	[1]	USD
Capacity (gross)		50 miles
Counterparty credit ratings	[2]	A/A2/A-
COD	[3]	1993
Chile TL4 [Member]
Nature of the business [Abstract]
Type		Transmission line
Ownership		100%
Location		Chile
Currency	[1]	USD
Capacity (gross)		63 miles
Counterparty credit ratings	[2]	Not rated
COD	[3]	2016
Contract years remaining	[4]	48 years
Skikda [Member]
Nature of the business [Abstract]
Type		Water
Ownership	[7]	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 remaining	[4]	10 years
Skikda [Member] | Algerian Energy Company, SPA [Member]
Nature of the business [Abstract]
Percentage of non-controlling interests		49%
Skikda [Member] | Sacyr Agua S.L. [Member]
Nature of the business [Abstract]
Percentage of non-controlling interests		16.80%
Honaine [Member]
Nature of the business [Abstract]
Type		Water
Ownership	[8]	25.50%
Location		Algeria
Currency	[1]	USD
Capacity (gross)		7 M ft3/day
Counterparty credit ratings	[2]	Not rated
COD	[3]	2012
Contract years remaining	[4]	14 years
Honaine [Member] | Algerian Energy Company, SPA [Member]
Nature of the business [Abstract]
Percentage of non-controlling interests		49%
Honaine [Member] | Sacyr Agua S.L. [Member]
Nature of the business [Abstract]
Percentage of non-controlling interests		25.50%
Tenes [Member]
Nature of the business [Abstract]
Type		Water
Ownership	[9]	51%
Location		Algeria
Currency	[1]	USD
Capacity (gross)		7 M ft3/day
Counterparty credit ratings	[2]	Not rated
COD	[3]	2015
Contract years remaining	[4]	16 years
Tenes [Member] | Algerian Energy Company, SPA [Member]
Nature of the business [Abstract]
Percentage of non-controlling interests		49%
PS10 & PS20 [Member]
Nature of the business [Abstract]
Type		Renewable (Solar)
Ownership		100%
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 remaining	[4]	8 years
PS20 [Member]
Nature of the business [Abstract]
Contract years remaining	[4]	10 years
Solana [Member]
Nature of the business [Abstract]
Type		Renewable (Solar)
Ownership		100%
Location		Arizona (USA)
Currency	[1]	USD
Capacity (gross)		280 MW
Counterparty credit ratings	[2]	BBB+/A3/BBB+
COD	[3]	2013
Contract years remaining	[4]	20 years
Mojave [Member]
Nature of the business [Abstract]
Type		Renewable (Solar)
Ownership		100%
Location		California (USA)
Currency	[1]	USD
Capacity (gross)		280 MW
Counterparty credit ratings	[2]	BB/ Ba1/BB+
COD	[3]	2014
Contract years remaining	[4]	16 years
Coso [Member]
Nature of the business [Abstract]
Type		Renewable (Geothermal)
Ownership		100%
Location		California (USA)
Currency	[1]	USD
Capacity (gross)		135 MW
Counterparty credit ratings	[2],[10]	Investment Grade
COD	[3]	1987-1989
Contract years remaining	[4]	18 years
Elkhorn Valley [Member]
Nature of the business [Abstract]
Type	[11]	Renewable (Wind)
Ownership	[11]	49%
Location	[11]	Oregon (USA)
Currency	[1],[11]	USD
Capacity (gross)	[11]	101 MW
Counterparty credit ratings	[2],[11]	BBB/Baa1/--
COD	[3],[11]	2007
Contract years remaining	[4],[11]	4 years
Prairie Star [Member]
Nature of the business [Abstract]
Type	[11]	Renewable (Wind)
Ownership	[11]	49%
Location	[11]	Minnesota (USA)
Currency	[1],[11]	USD
Capacity (gross)	[11]	101 MW
Counterparty credit ratings	[2],[11]	--/A3/A-
COD	[3],[11]	2007
Contract years remaining	[4],[11]	4 years
Twin Groves II [Member]
Nature of the business [Abstract]
Type	[11]	Renewable (Wind)
Ownership	[11]	49%
Location	[11]	Illinois (USA)
Currency	[1],[11]	USD
Capacity (gross)	[11]	198 MW
Counterparty credit ratings	[2],[11]	BB+/Baa2/--
COD	[3],[11]	2008
Contract years remaining	[4],[11]	2 years
Lone Star II [Member]
Nature of the business [Abstract]
Type	[11]	Renewable (Wind)
Ownership	[11]	49%
Location	[11]	Texas (USA)
Currency	[1],[11]	USD
Capacity (gross)	[11]	196 MW
Counterparty credit ratings	[2],[11]	N/A
COD	[3],[11]	2008
Chile PV I [Member]
Nature of the business [Abstract]
Type		Renewable (Solar)
Ownership	[12]	35%
Location		Chile
Currency	[1]	USD
Capacity (gross)		55 MW
Counterparty credit ratings	[2]	N/A
COD	[3]	2016
Percentage of non-controlling interests		65%
Chile PV2 [Member]
Nature of the business [Abstract]
Type		Renewable (Solar)
Ownership	[12]	35%
Location		Chile
Currency	[1]	USD
Capacity (gross)		40 MW
Counterparty credit ratings	[2]	Not rated
COD	[3]	2017
Contract years remaining	[4]	7 years
Percentage of non-controlling interests		65%
Chile PV 3 [Member]
Nature of the business [Abstract]
Type		Renewable (Solar)
Ownership	[12]	35%
Location		Chile
Currency	[1]	USD
Capacity (gross)		73 MW
Counterparty credit ratings	[2]	N/A
COD	[3]	2014
Percentage of non-controlling interests		65%
La Sierpe [Member]
Nature of the business [Abstract]
Type		Renewable (Solar)
Ownership		100%
Location		Colombia
Currency	[1]	COP
Capacity (gross)		20 MW
Counterparty credit ratings	[2]	Not rated
COD	[3]	2021
Contract years remaining	[4]	12 years
La Tolua [Member]
Nature of the business [Abstract]
Type		Renewable (Solar)
Ownership		100%
Location		Colombia
Currency	[1]	COP
Capacity (gross)		20 MW
Counterparty credit ratings	[2]	Not rated
COD	[3]	2023
Contract years remaining	[4]	9 years
Tierra Linda [Member]
Nature of the business [Abstract]
Type		Renewable (Solar)
Ownership		100%
Location		Colombia
Currency	[1]	COP
Capacity (gross)		10 MW
Counterparty credit ratings	[2]	Not rated
COD	[3]	2023
Contract years remaining	[4]	9 years
Honda 1 [Member]
Nature of the business [Abstract]
Type		Renewable (Solar)
Ownership		50%
Location		Colombia
Currency	[1]	COP
Capacity (gross)		10 MW
Counterparty credit ratings	[2]	BBB-/-/BBB
COD	[3]	2023
Contract years remaining	[4]	7 years
Albisu [Member]
Nature of the business [Abstract]
Type		Renewable (Solar)
Ownership		100%
Location		Uruguay
Currency	[1]	UYU
Capacity (gross)		10 MW
Counterparty credit ratings	[2]	Not rated
COD	[3]	2023
Contract years remaining	[4]	15 years
Palmatir [Member]
Nature of the business [Abstract]
Type		Renewable (Wind)
Ownership		100%
Location		Uruguay
Currency	[1]	USD
Capacity (gross)		50 MW
Counterparty credit ratings	[2],[13]	BBB+/Baa2/BBB
COD	[3]	2014
Contract years remaining	[4]	10 years
Cadonal [Member]
Nature of the business [Abstract]
Type		Renewable (Wind)
Ownership		100%
Location		Uruguay
Currency	[1]	USD
Capacity (gross)		50 MW
Counterparty credit ratings	[2],[13]	BBB+/Baa2/BBB
COD	[3]	2014
Contract years remaining	[4]	11 years
Melowind [Member]
Nature of the business [Abstract]
Type		Renewable (Wind)
Ownership		100%
Location		Uruguay
Currency	[1]	USD
Capacity (gross)		50 MW
Counterparty credit ratings	[2],[13]	BBB+/Baa2/BBB
COD	[3]	2015
Contract years remaining	[4]	12 years
Mini-Hydro [Member]
Nature of the business [Abstract]
Type		Renewable (Hydraulic)
Ownership		100%
Location		Peru
Currency	[1]	USD
Capacity (gross)		4 MW
Counterparty credit ratings	[2]	BBB/Baa1/BBB
COD	[3]	2012
Contract years remaining	[4]	9 years
Solaben 2 & 3 [Member]
Nature of the business [Abstract]
Type		Renewable (Solar)
Ownership	[14]	70%
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%
Solaben 2 [Member]
Nature of the business [Abstract]
Contract years remaining	[4]	14 years
Solaben 3 [Member]
Nature of the business [Abstract]
Contract years remaining	[4]	14 years
Solacor 1 & 2 [Member]
Nature of the business [Abstract]
Type		Renewable (Solar)
Ownership	[15]	87%
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%
Solacor 1 [Member]
Nature of the business [Abstract]
Contract years remaining	[4]	13 years
Solacor 2 [Member]
Nature of the business [Abstract]
Contract years remaining	[4]	13 years
Helioenergy 1 & 2 [Member]
Nature of the business [Abstract]
Type		Renewable (Solar)
Ownership		100%
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 remaining	[4]	13 years
Helioenergy 2 [Member]
Nature of the business [Abstract]
Contract years remaining	[4]	13 years
Helios 1 & 2 [Member]
Nature of the business [Abstract]
Type		Renewable (Solar)
Ownership		100%
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 remaining	[4]	13 years
Helios 2 [Member]
Nature of the business [Abstract]
Contract years remaining	[4]	14 years
Solnova 1, 3 & 4 [Member]
Nature of the business [Abstract]
Type		Renewable (Solar)
Ownership		100%
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 remaining	[4]	11 years
Solnova 3 [Member]
Nature of the business [Abstract]
Contract years remaining	[4]	11 years
Solnova 4 [Member]
Nature of the business [Abstract]
Contract years remaining	[4]	12 years
Solaben 1 & 6 [Member]
Nature of the business [Abstract]
Type		Renewable (Solar)
Ownership		100%
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 remaining	[4]	15 years
Solaben 6 [Member]
Nature of the business [Abstract]
Contract years remaining	[4]	15 years
Seville PV [Member]
Nature of the business [Abstract]
Type		Renewable (Solar)
Ownership	[16]	80%
Location		Spain
Currency	[1]	Euro
Capacity (gross)		1 MW
Counterparty credit ratings	[2]	A/Baa1/A-
COD	[3]	2006
Contract years remaining	[4]	12 years
Seville PV [Member] | Idae [Member]
Nature of the business [Abstract]
Percentage of non-controlling interests		20%
Italy PV 1 [Member]
Nature of the business [Abstract]
Type		Renewable (Solar)
Ownership		100%
Location		Italy
Currency	[1]	Euro
Capacity (gross)		1.6 MW
Counterparty credit ratings	[2]	BBB/Baa3/BBB
COD	[3]	2010
Contract years remaining	[4]	8 years
Italy PV 2 [Member]
Nature of the business [Abstract]
Type		Renewable (Solar)
Ownership		100%
Location		Italy
Currency	[1]	Euro
Capacity (gross)		2.1 MW
Counterparty credit ratings	[2]	BBB/Baa3/BBB
COD	[3]	2011
Contract years remaining	[4]	8 years
Italy PV 3 [Member]
Nature of the business [Abstract]
Type		Renewable (Solar)
Ownership		100%
Location		Italy
Currency	[1]	Euro
Capacity (gross)		2.5 MW
Counterparty credit ratings	[2]	BBB/Baa3/BBB
COD	[3]	2012
Contract years remaining	[4]	8 years
Italy PV 4 [Member]
Nature of the business [Abstract]
Type		Renewable (Solar)
Ownership		100%
Location		Italy
Currency	[1]	Euro
Capacity (gross)		3.6 MW
Counterparty credit ratings	[2]	BBB/Baa3/BBB
COD	[3]	2011
Contract years remaining	[4]	8 years
Kaxu [Member]
Nature of the business [Abstract]
Type		Renewable (Solar)
Ownership	[17]	51%
Location		South Africa
Currency	[1]	Rand
Capacity (gross)		100 MW
Counterparty credit ratings	[2],[18]	BB-/Ba2/BB-
COD	[3]	2015
Contract years remaining	[4]	11 years
Kaxu [Member] | IDC [Member]
Nature of the business [Abstract]
Percentage of non-controlling interests		29%
Kaxu [Member] | Kaxu Community Trust [Member]
Nature of the business [Abstract]
Percentage of non-controlling interests		20%
Calgary [Member]
Nature of the business [Abstract]
Type		Efficient natural gas &heat
Ownership		100%
Location		Canada
Currency	[1]	CAD
Capacity (gross)		55 MWt
Counterparty credit ratings	[2],[19]	~60% AA- or higher
COD	[3]	2010
Contract years remaining	[4]	12 years
[1] Certain contracts denominated in U.S. dollars are payable in local currency. 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. Not applicable (“N/A”) when the asset has no PPA. Commercial Operation Date. As of December 31, 2023. Including ATN Expansion 1 & 2. Algerian Energy Company, SPA owns 49% of Skikda and Sacyr Agua, S.L. owns the remaining 16.8%. Algerian Energy Company, SPA owns 49% of Honaine and Sacyr Agua, S.L. owns the remaining 25.5%. Algerian Energy Company, SPA owns 49% of Tenes. The Company has an investment in Tenes through a secured loan to Befesa Agua Tenes (the holding company of Tenes) and the right to appoint a majority at the board of directors of the project company. Therefore, the Company controls Tenes since May 31, 2020, and fully consolidates the asset from that date. Refers to the credit rating of two Community Choice Aggregators: Silicon Valley Clean Energy and Monterrey Bar Community Power, both with A Rating from S&P and Southern California Public Power Authority. The third off-taker is not rated. Part of Vento II Portfolio. 65% of Refers to the credit rating of Uruguay, as UTE (Administración Nacional de Usinas y Transmisoras Eléctricas) is unrated. Itochu Corporation holds 30% of the shares in each of Solaben 2 and Solaben 3. JGC holds 13% of the shares in each of Solacor 1 and Solacor 2. Instituto para la Diversificación y Ahorro de la Energía (“Idae”) holds 20% of the shares in Seville PV. Kaxu is owned by the Company (51%), Industrial Development Corporation of South Africa (“IDC”, 29%) and Kaxu Community Trust (20%). Refers to the credit rating of the Republic of South Africa. The off-taker is Eskom, which is a state-owned utility company in South Africa. Refers to the credit rating of a diversified mix of 22 high credit quality clients (~60% AA- rating or higher, the rest is unrated).

Nature of the business, Assets

Nature of the business, Assets under construction (Details) $ in Thousands		1 Months Ended				12 Months Ended
		Oct. 31, 2023 Agreement h	Jul. 31, 2023 Substation	Jul. 31, 2022 mi	May 31, 2022 USD ($) Asset	Dec. 31, 2023 USD ($)		Dec. 31, 2022 USD ($)	Nov. 30, 2022	Nov. 16, 2022 USD ($)	Dec. 31, 2021 USD ($)
Assets under construction or ready to start construction [Abstract]
Investments accounted for using equity method						$ 230,307		$ 260,031			$ 294,581
Percentage of interest acquired									49%
Chile PV 1 and PV2 events of default [Abstract]
Current project debt						$ 387,387		$ 326,534
Coso Batteries 1 and Coso Batteries 2 [Member]
Assets under construction or ready to start construction [Abstract]
Period of PPA						15 years
Number of tooling agreements | Agreement		2
Coso Batteries 1 [Member]
Assets under construction or ready to start construction [Abstract]
Type						Battery Storage
Location						California, US
Capacity (gross)	[1]					100 MWh
Expected COD						2025
Off-taker						Investment grade utility
Duration capacity of battery | h		4
Coso Batteries 1 [Member] | Bottom of Range [Member]
Assets under construction or ready to start construction [Abstract]
Investments accounted for using equity method	[2]					$ 40,000
Coso Batteries 1 [Member] | Top of Range [Member]
Assets under construction or ready to start construction [Abstract]
Investments accounted for using equity method	[2]					$ 50,000
Coso Batteries 2 [Member]
Assets under construction or ready to start construction [Abstract]
Type						Battery Storage
Location						California, US
Capacity (gross)						80 MWh
Expected COD						2025
Off-taker						Investment grade utility
Duration capacity of battery | h		4
Coso Batteries 2 [Member] | Bottom of Range [Member]
Assets under construction or ready to start construction [Abstract]
Investments accounted for using equity method						$ 35,000
Coso Batteries 2 [Member] | Top of Range [Member]
Assets under construction or ready to start construction [Abstract]
Investments accounted for using equity method						$ 45,000
Chile PMGD [Member]
Assets under construction or ready to start construction [Abstract]
Type						Solar PV
Location						Chile
Capacity (gross)	[1]					80 MW
Expected COD						2024-2025
Investments accounted for using equity method						$ 30,000	[2]			$ 30,000
Off-taker						Regulated
Percentage of interest acquired										49%
ATN Expansion 3 [Member]
Assets under construction or ready to start construction [Abstract]
Type						Transmission Line
Location						Peru
Capacity (gross)	[1]					2.4miles 220kV
Expected COD						2024
Investments accounted for using equity method	[2]					$ 12,000
Off-taker						Conelsur
Period of PPA						17 years
Length of transmission lines | mi				2.4
ATN Expansion 1 [Member]
Assets under construction or ready to start construction [Abstract]
Type						Transmission Line
Location						Peru
Capacity (gross)	[1]					n.a. (substation)
Expected COD						2025
Investments accounted for using equity method	[2]					$ 30,000
Off-taker						Republic of Peru
Period of PPA						30 years
Number of substations | Substation			2
Commercial operation end date						2044
Remaining operation period of concessional asset						9 years
Honda 1 and 2 [Member]
Assets under construction or ready to start construction [Abstract]
Capacity (gross)					20 MW
Expected COD						December 2023
Investments accounted for using equity method					$ 5,500
Period of PPA						7 years
Number of PV assets | Asset					2
Percentage of interest acquired					50%
Honda 1 [Member]
Assets under construction or ready to start construction [Abstract]
Period of PPA						7 years
Percentage of interest acquired						50%
Honda 2 [Member]
Assets under construction or ready to start construction [Abstract]
Type	[3]					Solar PV
Location	[3]					Colombia
Capacity (gross)	[1],[3]					10 MW
Expected COD	[3]					2024
Investments accounted for using equity method	[2],[3]					$ 5,500
Off-taker	[3]					Enel Colombia
Percentage of interest acquired						50%
Apulo 1 [Member]
Assets under construction or ready to start construction [Abstract]
Type	[3]					Solar PV
Location	[3]					Colombia
Capacity (gross)	[1],[3]					10 MW
Expected COD	[3]					2024
Investments accounted for using equity method	[2],[3]					$ 5,500
Percentage of interest acquired						50%
Chile PV 1 and PV2 [Member]
Assets under construction or ready to start construction [Abstract]
Percentage of interest acquired						35%
Chile PV 1 and PV2 events of default [Abstract]
Current project debt						$ 71,000
[1]Includes nominal capacity on a 100% basis, not considering Atlantica’s ownership[2]Corresponds to the expected investment by Atlantica[3] Atlantic a owns of th

Significant accounting polici_3

Significant accounting policies, Revenue Recognition (Details)	12 Months Ended
	Dec. 31, 2023
Spain [Member]
Revenue Recognition [Abstract]
Percentage of receiving a remuneration based on reasonable rate of return on assets	7.09%
Other [Member]
Revenue Recognition [Abstract]
Percentage of receiving a remuneration based on reasonable rate of return on assets	7.398%

Significant accounting polici_4

Significant accounting policies, Loans and Borrowings (Details)	12 Months Ended
	Dec. 31, 2023
Significant accounting policies [Abstract]
Percentage to evaluates redemption of old debt and issuance of new debt	10%
Net present value of modified cash flows including any fees paid net of any fees received	10%

Financial risk management (Deta

Financial risk management (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
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	$ (0.7)	$ (1.3)	$ (2.5)
Forecasted gain in hedging reserves due to increase in reference interest rate	$ 17.6	$ 18.4	$ 22.4
Currency Risk [Member]
Financial risk management [Abstract]
Net Euro exposure percentage for next fiscal year	100%
Net Euro exposure percentage for following fiscal period	75%
Project Debt [Member]
Financial risk management [Abstract]
Percentage of notional amount of debt hedged	92%
Corporate Debt [Member]
Financial risk management [Abstract]
Percentage of notional amount of debt hedged	94%

Financial information by segm_3

Financial information by segment, Revenues and Adjusted EBITDA (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2023 USD ($) Customer	Dec. 31, 2022 USD ($) Customer	Dec. 31, 2021 USD ($)
Financial information by segment [Abstract]
Number of customers representing more than 10% of total revenues | Customer	4	3
Revenue	$ 1,099,894	$ 1,102,029	$ 1,211,749
Adjusted EBITDA	$ 794,922	$ 797,100	824,388
Renewable Energy [Member]
Financial information by segment [Abstract]
Number of customers representing more than 10% of total revenues | Customer	3	2
Revenue	$ 802,756	$ 821,377	928,525
Adjusted EBITDA	$ 575,704	$ 588,016	602,583
Efficient Natural Gas & Heat [Member]
Financial information by segment [Abstract]
Number of customers representing more than 10% of total revenues | Customer	1	1
Revenue	$ 118,417	$ 113,591	123,692
Adjusted EBITDA	87,393	84,560	99,935
Transmission Lines [Member]
Financial information by segment [Abstract]
Revenue	123,476	113,273	105,680
Adjusted EBITDA	96,043	88,010	83,635
Water [Member]
Financial information by segment [Abstract]
Revenue	55,245	53,788	53,852
Adjusted EBITDA	35,782	36,514	38,235
North America [Member]
Financial information by segment [Abstract]
Revenue	424,888	405,047	395,775
Adjusted EBITDA	319,264	309,988	311,803
South America [Member]
Financial information by segment [Abstract]
Revenue	188,127	166,441	154,985
Adjusted EBITDA	146,722	126,551	119,547
EMEA [Member]
Financial information by segment [Abstract]
Revenue	486,879	530,541	660,989
Adjusted EBITDA	$ 328,936	$ 360,561	$ 393,038

Financial information by segm_4

Financial information by segment, Reconciliation of segment Adjusted EBITDA (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Financial information by segment [Abstract]
Profit/(loss) attributable to the Company	$ 43,380	$ (5,443)	$ (30,080)
Profit/(loss) attributable to non-controlling interest	(6,932)	3,356	19,162
Income tax expense/(income)	(790)	9,689	(36,220)
Financial expense, net	(317,974)	(310,934)	(340,892)
Depreciation, amortization, and impairment charges	(418,271)	(473,638)	(439,441)
Total segment Adjusted EBITDA	794,922	797,100	824,388
Reconciling Item [Member]
Financial information by segment [Abstract]
Profit/(loss) attributable to the Company	43,380	(5,443)	(30,080)
Profit/(loss) attributable to non-controlling interest	(6,932)	3,356	19,162
Income tax expense/(income)	790	(9,689)	36,220
Financial expense, net	317,974	310,934	340,892
Depreciation, amortization, and impairment charges	418,271	473,638	439,441
Depreciation and amortization, financial expense and income tax expense of unconsolidated affiliates (pro rata of Atlantica's equity ownership)	21,439	24,304	18,753
Total segment Adjusted EBITDA	$ 794,922	$ 797,100	$ 824,388

Financial information by segm_5

Financial information by segment, Assets and liabilities by geography (Details) $ in Thousands, € in Millions	Dec. 31, 2023 USD ($)	Feb. 24, 2023 USD ($)	Feb. 24, 2023 EUR (€)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Assets allocated [Abstract]
Contracted concessional, PP&E and other intangible assets	$ 7,204,267			$ 7,483,259
Investments carried under the equity method	230,307			260,031	$ 294,581
Other current financial assets	188,886			195,893
Cash and cash equivalents (project companies)	448,301			600,990	622,689	$ 868,501
Assets held for sale	28,642			0
Total assets	8,714,333			9,100,911
Liabilities allocated [Abstract]
Long-term and short-term project debt	4,319,260			4,553,052	5,036,193
Grants and other liabilities	1,233,808			1,252,513
Long-term and short-term corporate debt	1,084,838	$ 7,700	€ 7	1,017,200	1,023,071
Other non-current liabilities	44,489			45,365
Total liabilities	7,125,524			7,311,864
Equity	1,588,809			1,789,047	$ 1,748,605	$ 1,740,881
Total liabilities and equity	8,714,333			9,100,911
North America [Member]
Assets allocated [Abstract]
Contracted concessional, PP&E and other intangible assets	3,063,019			3,167,490
Investments carried under the equity method	177,260			210,704
Other current financial assets	110,016			118,385
Cash and cash equivalents (project companies)	137,480			187,568
Assets held for sale	28,642
Total assets	3,516,417			3,684,147
Liabilities allocated [Abstract]
Long-term and short-term project debt	1,629,278			1,713,125
Grants and other liabilities	945,888			994,874
Total liabilities	2,575,166			2,707,999
South America [Member]
Assets allocated [Abstract]
Contracted concessional, PP&E and other intangible assets	1,184,599			1,241,879
Investments carried under the equity method	9,178			4,450
Other current financial assets	30,803			31,136
Cash and cash equivalents (project companies)	121,945			85,697
Assets held for sale	0
Total assets	1,346,525			1,363,162
Liabilities allocated [Abstract]
Long-term and short-term project debt	808,481			841,906
Grants and other liabilities	36,307			25,031
Total liabilities	844,788			866,937
EMEA [Member]
Assets allocated [Abstract]
Contracted concessional, PP&E and other intangible assets	2,956,649			3,073,889
Investments carried under the equity method	43,869			44,878
Other current financial assets	48,067			46,373
Cash and cash equivalents (project companies)	155,551			266,557
Assets held for sale	0
Total assets	3,204,136			3,431,697
Liabilities allocated [Abstract]
Long-term and short-term project debt	1,881,501			1,998,021
Grants and other liabilities	251,613			232,608
Total liabilities	2,133,114			2,230,629
Allocated [Member]
Assets allocated [Abstract]
Contracted concessional, PP&E and other intangible assets	7,204,267			7,483,259
Investments carried under the equity method	230,307			260,031
Other current financial assets	188,886			195,893
Cash and cash equivalents (project companies)	414,976			539,822
Assets held for sale	28,642
Total assets	8,067,078			8,479,005
Liabilities allocated [Abstract]
Long-term and short-term project debt	4,319,260			4,553,052
Grants and other liabilities	1,233,808			1,252,513
Total liabilities	5,553,068			5,805,565
Unallocated [Member]
Assets allocated [Abstract]
Other non-current assets	297,577			325,893
Other current assets (including cash and cash equivalents at holding company level)	349,678			296,013
Total assets	647,255			621,906
Liabilities allocated [Abstract]
Long-term and short-term corporate debt	1,084,838			1,017,200
Other non-current liabilities	301,245			313,328
Other current liabilities	186,373			175,771
Total liabilities	1,572,456			1,506,299
Equity	1,588,809			1,789,047
Total liabilities and equity	$ 3,161,265			$ 3,295,346

Financial information by segm_6

Financial information by segment, Assets and liabilities by business sectors (Details) $ in Thousands, € in Millions	Dec. 31, 2023 USD ($)	Feb. 24, 2023 USD ($)	Feb. 24, 2023 EUR (€)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Assets allocated [Abstract]
Contracted concessional, PP&E and other intangible assets	$ 7,204,267			$ 7,483,259
Investments carried under the equity method	230,307			260,031	$ 294,581
Other current financial assets	188,886			195,893
Cash and cash equivalents (project companies)	448,301			600,990	622,689	$ 868,501
Assets held for sale	28,642			0
Total assets	8,714,333			9,100,911
Liabilities allocated [Abstract]
Long-term and short-term project debt	4,319,260			4,553,052	5,036,193
Grants and other liabilities	1,233,808			1,252,513
Long-term and short-term corporate debt	1,084,838	$ 7,700	€ 7	1,017,200	1,023,071
Other non-current liabilities	44,489			45,365
Total liabilities	7,125,524			7,311,864
Equity	1,588,809			1,789,047	$ 1,748,605	$ 1,740,881
Total liabilities and equity	8,714,333			9,100,911
Renewable Energy [Member]
Assets allocated [Abstract]
Contracted concessional, PP&E and other intangible assets	5,798,818			6,035,091
Investments carried under the equity method	189,672			207,870
Other current financial assets	10,866			6,706
Cash and cash equivalents (project companies)	299,987			392,577
Assets held for sale	0
Total assets	6,299,343			6,642,244
Liabilities allocated [Abstract]
Long-term and short-term project debt	3,280,618			3,442,625
Grants and other liabilities	1,185,487			1,211,878
Total liabilities	4,466,105			4,654,503
Efficient Natural Gas & Heat [Member]
Assets allocated [Abstract]
Contracted concessional, PP&E and other intangible assets	460,766			485,431
Investments carried under the equity method	0			10,034
Other current financial assets	103,907			116,366
Cash and cash equivalents (project companies)	35,098			73,673
Assets held for sale	28,642
Total assets	628,413			685,504
Liabilities allocated [Abstract]
Long-term and short-term project debt	401,460			440,999
Grants and other liabilities	32,916			32,138
Total liabilities	434,376			473,137
Transmission Lines [Member]
Assets allocated [Abstract]
Contracted concessional, PP&E and other intangible assets	777,360			800,067
Investments carried under the equity method	0			0
Other current financial assets	30,746			30,582
Cash and cash equivalents (project companies)	58,004			48,073
Assets held for sale	0
Total assets	866,110			878,722
Liabilities allocated [Abstract]
Long-term and short-term project debt	560,906			582,689
Grants and other liabilities	12,884			6,040
Total liabilities	573,790			588,729
Water [Member]
Assets allocated [Abstract]
Contracted concessional, PP&E and other intangible assets	167,323			162,670
Investments carried under the equity method	40,635			42,128
Other current financial assets	43,367			42,240
Cash and cash equivalents (project companies)	21,887			25,498
Assets held for sale	0
Total assets	273,212			272,536
Liabilities allocated [Abstract]
Long-term and short-term project debt	76,276			86,739
Grants and other liabilities	2,521			2,457
Total liabilities	78,797			89,196
Allocated [Member]
Assets allocated [Abstract]
Contracted concessional, PP&E and other intangible assets	7,204,267			7,483,259
Investments carried under the equity method	230,307			260,031
Other current financial assets	188,886			195,893
Cash and cash equivalents (project companies)	414,976			539,822
Assets held for sale	28,642
Total assets	8,067,078			8,479,005
Liabilities allocated [Abstract]
Long-term and short-term project debt	4,319,260			4,553,052
Grants and other liabilities	1,233,808			1,252,513
Total liabilities	5,553,068			5,805,565
Unallocated [Member]
Assets allocated [Abstract]
Other non-current assets	297,577			325,893
Other current assets (including cash and cash equivalents at holding company level)	349,678			296,013
Total assets	647,255			621,906
Liabilities allocated [Abstract]
Long-term and short-term corporate debt	1,084,838			1,017,200
Other non-current liabilities	301,245			313,328
Other current liabilities	186,373			175,771
Total liabilities	1,572,456			1,506,299
Equity	1,588,809			1,789,047
Total liabilities and equity	$ 3,161,265			$ 3,295,346

Financial information by segm_7

Financial information by segment, Depreciation, amortization and impairment charges recognized (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Financial information by segment [Abstract]
Depreciation, amortization and impairment charges	$ (418,271)	$ (473,638)	$ (439,441)
Renewable Energy [Member]
Financial information by segment [Abstract]
Depreciation, amortization and impairment charges	(398,394)	(434,042)	(432,138)
Efficient Natural Gas & Heat [Member]
Financial information by segment [Abstract]
Depreciation, amortization and impairment charges	9,365	(5,430)	23,910
Transmission Lines [Member]
Financial information by segment [Abstract]
Depreciation, amortization and impairment charges	(29,331)	(32,466)	(31,286)
Water [Member]
Financial information by segment [Abstract]
Depreciation, amortization and impairment charges	89	(1,700)	73
North America [Member]
Financial information by segment [Abstract]
Depreciation, amortization and impairment charges	(125,725)	(182,159)	(152,946)
South America [Member]
Financial information by segment [Abstract]
Depreciation, amortization and impairment charges	(77,855)	(80,039)	(57,214)
EMEA [Member]
Financial information by segment [Abstract]
Depreciation, amortization and impairment charges	$ (214,691)	$ (211,440)	$ (229,281)

Business combinations, 2023 (De

Business combinations, 2023 (Details) - Asset Acquisition 2023 [Member] $ in Thousands	12 Months Ended
	Dec. 31, 2023 USD ($)
Business acquisition [Abstract]
Property, plant and equipment under IAS 16 (Note 6)	$ 1,565
Intangible assets under IAS 38 (Note 6)	4,486
Inventories	1,646
Other current and non-current liabilities	(5,494)
Total net assets acquired at fair value	2,203
Asset acquisition - purchase price paid	(2,203)
Net result of business combinations	0
Revenue contributed by the acquisitions	0
Amount of loss after tax	800
Additional amount of loss after tax	$ 200

Business combinations, 2022 (De

Business combinations, 2022 (Details) $ in Thousands				12 Months Ended
	Sep. 02, 2022 USD ($) MW	Apr. 04, 2022 USD ($) MW	Jan. 17, 2022 USD ($) Substation MW	Dec. 31, 2022 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2021 USD ($)
Business combinations [Abstract]
Investments accounted for using equity method				$ 260,031	$ 230,307	$ 294,581
Asset Acquisition [Member]
Fair Value of Assets and Liabilities Acquisition [Abstract]
Property, plant and equipment under IAS 16 (Note 6)				58,002
Rights of use under IFRS 16 (Lessee) or intangible assets under IAS 38 (Note 6)				16,993
Cash & cash equivalents				1,057
Other current assets				8,283
Non-current Project debt (Note 16)				(1,301)
Current Project debt (Note 16)				(148)
Other current and non-current liabilities				(18,919)
Non-controlling interest				(14,300)
Total net assets acquired at fair value				49,667
Asset acquisition - purchase price paid				(49,667)
Net result of business combinations				0
Revenue contributed by the acquisitions				6,200
Amount of profit after tax				1,700
Additional revenue amount				4,800
Additional amount of profit after tax				$ 1,700
Chile TL4 [Member]
Business combinations [Abstract]
Installed capacity | MW			63
Number of substations | Substation			2
Investments accounted for using equity method			$ 38,400		$ 8,000
Italy PV 4 [Member]
Business combinations [Abstract]
Installed capacity | MW		3.6
Investments accounted for using equity method		$ 3,700
Chile PV 3 [Member]
Business combinations [Abstract]
Installed capacity | MW	73
Investments accounted for using equity method	$ 7,700
Percentage of non-controlling interests	65%

Contracted concessional, PP&E_3

Contracted concessional, PP&E and other intangible assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Movements of Contracted Concessional Assets [Abstract]
Total, beginning of period	$ 7,483,259
Total, end of period	7,204,267	$ 7,483,259
Impairment provision based on expected credit losses on contracted concessional financial assets	(13,000)	7,000
Cost [Member]
Movements of Contracted Concessional Assets [Abstract]
Total, beginning of period	10,862,982	11,019,135
Additions	82,807	117,292
Subtractions	(6,131)	(10,561)
Business combinations (Note 5)	6,051	74,995
Currency translation differences	115,071	(285,312)
Reclassification and other movements	(31,573)	(52,567)
Total, end of period	11,029,207	10,862,982
Total net book value		(3,379,723)
Cost [Member] | Financial Assets Under IFRIC 12 [Member]
Movements of Contracted Concessional Assets [Abstract]
Total, beginning of period	818,170	874,525
Additions	0	0
Subtractions	0	0
Business combinations (Note 5)	0	0
Currency translation differences	5,025	1,760
Reclassification and other movements	(38,016)	(58,115)
Total, end of period	785,179	818,170
Total net book value		(69,557)
Cost [Member] | Financial Assets Under IFRS 16 Lessor [Member]
Movements of Contracted Concessional Assets [Abstract]
Total, beginning of period	2,787	2,843
Additions	0	0
Subtractions	0	(57)
Business combinations (Note 5)	0	0
Currency translation differences	(132)	1
Reclassification and other movements	0	0
Total, end of period	2,655	2,787
Total net book value		0
Cost [Member] | Intangible Assets Under IFRIC 12 [Member]
Movements of Contracted Concessional Assets [Abstract]
Total, beginning of period	8,845,151	9,068,646
Additions	27,531	32,941
Subtractions	0	(499)
Business combinations (Note 5)	0	0
Currency translation differences	84,060	(258,735)
Reclassification and other movements	348	2,798
Total, end of period	8,957,090	8,845,151
Total net book value		(3,088,778)
Cost [Member] | Right Of Use Assets Under IFRS 16 (Lessee) And Intangible Assets Under IIAS 38 [Member]
Movements of Contracted Concessional Assets [Abstract]
Total, beginning of period	120,308	100,109
Additions	4,409	5,637
Subtractions	(644)	(1,510)
Business combinations (Note 5)	4,486	16,993
Currency translation differences	4,756	(4,446)
Reclassification and other movements	17,632	3,525
Total, end of period	150,947	120,308
Total net book value		(26,783)
Cost [Member] | Property, Plant And Equipment Under IAS 16 [Member] | Land [member]
Movements of Contracted Concessional Assets [Abstract]
Total, beginning of period	137,767	137,037
Additions	62	3,532
Subtractions	0	0
Business combinations (Note 5)	0	0
Currency translation differences	1,515	(2,802)
Reclassification and other movements	0	0
Total, end of period	139,344	137,767
Total net book value		0
Cost [Member] | Property, Plant And Equipment Under IAS 16 [Member] | Technical Installations [Member]
Movements of Contracted Concessional Assets [Abstract]
Total, beginning of period	938,799	835,975
Additions	50,805	75,182
Subtractions	(5,487)	(8,495)
Business combinations (Note 5)	1,565	58,002
Currency translation differences	19,847	(21,090)
Reclassification and other movements	(11,537)	(775)
Total, end of period	993,992	938,799
Total net book value		(194,605)
Depreciation, Amortization and Impairment [Member]
Movements of Contracted Concessional Assets [Abstract]
Total, beginning of period	(3,379,723)	(2,997,567)
Additions	(412,395)	(414,240)
Impairment charges	(16,079)	(61,684)
Reversal of impairment	13,378	8,502
Currency translation differences	(37,327)	85,266
Reclassification and other movements	7,206
Total, end of period	(3,824,940)	(3,379,723)
Total net book value	7,204,267	7,483,259
Impairment loss on contracted concessional financial assets	(16,079)	(61,684)
Depreciation, Amortization and Impairment [Member] | Financial Assets Under IFRIC 12 [Member]
Movements of Contracted Concessional Assets [Abstract]
Total, beginning of period	(69,557)	(62,889)
Additions	0	(6,560)
Impairment charges	0
Reversal of impairment	13,378	0
Currency translation differences	(199)	(108)
Reclassification and other movements	0
Total, end of period	(56,378)	(69,557)
Total net book value	728,801	748,613
Impairment loss on contracted concessional financial assets	0
Depreciation, Amortization and Impairment [Member] | Financial Assets Under IFRS 16 Lessor [Member]
Movements of Contracted Concessional Assets [Abstract]
Total, beginning of period	0	0
Impairment charges	0
Reversal of impairment	0	0
Currency translation differences	0	0
Reclassification and other movements	0
Total, end of period	0	0
Total net book value	2,655	2,787
Impairment loss on contracted concessional financial assets	0
Depreciation, Amortization and Impairment [Member] | Intangible Assets Under IFRIC 12 [Member]
Movements of Contracted Concessional Assets [Abstract]
Total, beginning of period	(3,088,778)	(2,769,345)
Additions	(358,602)	(357,401)
Impairment charges	0	(41,238)
Reversal of impairment	0	0
Currency translation differences	(32,084)	79,206
Reclassification and other movements	0
Total, end of period	(3,479,464)	(3,088,778)
Total net book value	5,477,626	5,756,373
Impairment loss on contracted concessional financial assets	0	(41,238)
Depreciation, Amortization and Impairment [Member] | Right Of Use Assets Under IFRS 16 (Lessee) And Intangible Assets Under IIAS 38 [Member]
Movements of Contracted Concessional Assets [Abstract]
Total, beginning of period	(26,783)	(21,578)
Additions	(11,869)	(6,865)
Impairment charges	0	0
Reversal of impairment	0	859
Currency translation differences	(533)	801
Reclassification and other movements	372
Total, end of period	(38,813)	(26,783)
Total net book value	112,134	93,525
Impairment loss on contracted concessional financial assets	0	0
Depreciation, Amortization and Impairment [Member] | Property, Plant And Equipment Under IAS 16 [Member] | Land [member]
Movements of Contracted Concessional Assets [Abstract]
Total, beginning of period	0	0
Impairment charges	0	0
Reversal of impairment	0	0
Currency translation differences	0	0
Reclassification and other movements	0
Total, end of period	0	0
Total net book value	139,344	137,767
Impairment loss on contracted concessional financial assets	0	0
Depreciation, Amortization and Impairment [Member] | Property, Plant And Equipment Under IAS 16 [Member] | Technical Installations [Member]
Movements of Contracted Concessional Assets [Abstract]
Total, beginning of period	(194,605)	(143,755)
Additions	(41,924)	(43,414)
Impairment charges	(16,079)	(20,446)
Reversal of impairment	0	7,643
Currency translation differences	(4,511)	5,367
Reclassification and other movements	6,834
Total, end of period	(250,285)	(194,605)
Total net book value	743,707	744,194
Impairment loss on contracted concessional financial assets	(16,079)	(20,446)
Solana [Member]
Movements of Contracted Concessional Assets [Abstract]
Impairment charges		41,000
Impairment loss on contracted concessional financial assets		41,000
Recoverable amount of contracted concessional financial assets value in use	$ 881,000
Chile PV1 and Chile PV2 [Member]
Movements of Contracted Concessional Assets [Abstract]
Assumed percentage decrease in generation	5%
Additional impairment loss with increase in discount rate	$ 3,000
Assumed basis point increase in discount rate	0.50%
Additional impairment loss with increase in discount rate	$ 2,000
Value of net assets	0
Chile PV1 [Member]
Movements of Contracted Concessional Assets [Abstract]
Impairment charges	16,000	8,000
Impairment loss on contracted concessional financial assets	16,000	8,000
Recoverable amount of contracted concessional financial assets value in use	$ 40,000	$ 58,000
Chile PV1 [Member] | Bottom of Range [Member]
Movements of Contracted Concessional Assets [Abstract]
Discount rate	7.70%	7.50%
Chile PV1 [Member] | Top of Range [Member]
Movements of Contracted Concessional Assets [Abstract]
Discount rate	8.70%	8.40%
Chile PV2 [Member]
Movements of Contracted Concessional Assets [Abstract]
Impairment charges	$ 0	$ 12,000
Impairment loss on contracted concessional financial assets	0	12,000
Recoverable amount of contracted concessional financial assets value in use	$ 22,000	$ 22,000
Chile PV2 [Member] | Bottom of Range [Member]
Movements of Contracted Concessional Assets [Abstract]
Discount rate	7.70%	7.50%
Chile PV2 [Member] | Top of Range [Member]
Movements of Contracted Concessional Assets [Abstract]
Discount rate	9.80%	8.30%

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
		Oct. 30, 2023	Dec. 31, 2023	Dec. 31, 2022
Investments in associates [Abstract]
Initial balance			$ 260,031	$ 294,581
Share of profit			13,207	21,465
Distributions			(38,780)	(57,537)
New entities carried under the equity method			4,439	4,901
Investment in associates classified as held for sale during the year (Note 8)			(10,194)	0
Others (incl. currency translation differences)			1,604	(3,379)
Final balance			230,307	260,031
Pemcorp SAPI de CV [Member]
Investments in associates [Abstract]
Initial balance	[1]		$ 10,034
Investment in associates classified as held for sale during the year (Note 8)		$ 10,200
Final balance	[1]			$ 10,034
[1]Pemcorp SAPI de CV, Monterrey´s project entity, is 100% owned by Arroyo Netherlands II B.V., which was accounted for under the equity method in the Consolidated Financial Statements as of December 31, 2022. Arroyo Netherlands II B.V. is 30% owned by Atlantica. The investment held by Atlantica in Pemcorp has been classified as held for sale in these Consolidated Financial (Note 8). Share of profit of Pemcorp SAPI de CV included in these Consolidated Financial Statements amounts to a $0.2 million profit in 2023 and a $5.3 million loss in 2022.

Investments carried under the_4

Investments carried under the equity method, Distributions (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Dividend distribution [Abstract]
Dividend distribution	$ 38,780	$ 57,537
2007 Vento II, LLC [Member]
Dividend distribution [Abstract]
Dividend distribution	16,100	32,600
Honaine [Member]
Dividend distribution [Abstract]
Dividend distribution	5,400	4,000
Amherst Island [Member]
Dividend distribution [Abstract]
Dividend distribution	$ 17,300	$ 20,900

Investments carried under the_5

Investments carried under the equity method, New entities carried under the equity method (Details) - Colombian Portfolio of Renewable Energy Entities [Member] - USD ($) $ in Millions		12 Months Ended
	Mar. 01, 2023	Dec. 31, 2023
New entities carried under the equity method [Abstract]
Equity interest	50%
Ownership interest	30%	50%
Gains on sale of equity interest		$ 4.6

Investments carried under the_6

Investments carried under the equity method, Share of profit (Details) - MW	Nov. 30, 2022	Nov. 16, 2022
Share of profit [Abstract]
Percentage of voting equity interests acquired	49%
Chile PMGD [Member]
Share of profit [Abstract]
Percentage of voting equity interests acquired		49%
Gross capacity	80

Investments carried under the_7

Investments carried under the equity method, Breakdown of stand-alone amounts (Details) $ in Thousands					12 Months Ended
		Mar. 01, 2023	Nov. 30, 2022 MW	Jun. 16, 2021 MW	Dec. 31, 2023 USD ($)		Dec. 31, 2022 USD ($)		Dec. 31, 2021 USD ($)
Investments in associates [Abstract]
Non-current assets					$ 7,732,151		$ 8,069,183
Current assets					982,182		1,031,728
Project debt					4,319,260		4,553,052		$ 5,036,193
Other non-current liabilities					6,517,742		6,792,862
Other current liabilities					607,782		519,002
Revenue					1,099,894		1,102,029		1,211,749
Net profit/(loss)					36,448		(2,087)		(10,918)
Investment under the equity method					230,307		$ 260,031		$ 294,581
Ownership interest							49%		49%
Share of profit					$ 13,207		$ 21,465
Bottom of Range [Member]
Investments in associates [Abstract]
Percentage of shareholders required for approval of relevant decisions					75%
Geida Tlemcen, S.L. [Member]
Investments in associates [Abstract]
% Shares					50%
Arroyo Netherlands II B.V [Member]
Investments in associates [Abstract]
% Shares					30%
Ownership interest					100%
Share of profit					$ (200)		$ (5,300)
2007 Vento II, LLC [Member]
Investments in associates [Abstract]
% Shares				49%	49%	[1]	49%	[1]
Non-current assets	[1]				$ 411,099		$ 435,029
Current assets	[1]				25,777		14,198
Project debt	[1]				0		0
Other non-current liabilities	[1]				56,508		57,596
Other current liabilities	[1]				11,285		11,515
Revenue	[1]				82,849		103,362
Operating profit/(loss)	[1]				21,024		42,662
Net profit/(loss)	[1]				19,752		40,992
Investment under the equity method	[1]				175,351		181,735
Gross capacity | MW				596
Share of profit					$ 9,700		$ 20,100
Windlectric Inc. [Member]
Investments in associates [Abstract]
% Shares	[2]				30%		30%
Non-current assets	[2]				$ 284,618		$ 278,504
Current assets	[2]				30,884		3,338
Project debt	[2]				0		0
Other non-current liabilities	[2]				159,406		167,519
Other current liabilities	[2]				77,389		43,227
Revenue	[2]				21,514		24,996
Operating profit/(loss)	[2]				8,515		10,560
Net profit/(loss)	[2]				(2,157)		(15)
Investment under the equity method	[2]				$ 1,910		$ 18,935
Ownership interest					100%
Myah Bahr Honaine, S.P.A. [Member]
Investments in associates [Abstract]
% Shares	[3]				25.50%		25.50%
Non-current assets	[3]				$ 155,338		$ 150,623
Current assets	[3]				63,451		66,246
Project debt	[3]				35,569		43,579
Other non-current liabilities	[3]				20,240		18,902
Other current liabilities	[3]				4,653		4,257
Revenue	[3]				56,172		55,267
Operating profit/(loss)	[3]				34,576		33,374
Net profit/(loss)	[3]				27,084		26,768
Investment under the equity method	[3]				$ 40,635		42,128
Myah Bahr Honaine, S.P.A. [Member] | Geida Tlemcen, S.L. [Member]
Investments in associates [Abstract]
% Shares					51%
Share of profit					$ 6,900		$ 6,800
Akuo Atlantica PMGD Holding S.P.A [Member]
Investments in associates [Abstract]
% Shares			49%		49%	[4]	49%	[4]
Non-current assets	[4]				$ 56,214		$ 14,814
Current assets	[4]				7,210		2,828
Project debt	[4]				24,214		0
Other non-current liabilities	[4]				18,090		8,755
Other current liabilities	[4]				13,739		326
Revenue	[4]				192		0
Operating profit/(loss)	[4]				(75)		0
Net profit/(loss)	[4]				(83)		(348)
Investment under the equity method	[4]				$ 4,409		$ 4,450
Gross capacity | MW			80
Colombian Portfolio of Renewable Energy Entities [Member]
Investments in associates [Abstract]
% Shares		30%			50%
Non-current assets					$ 9,092
Current assets					4,970
Project debt					0
Other non-current liabilities					9,872
Other current liabilities					956
Revenue					0
Operating profit/(loss)					(587)
Net profit/(loss)					1,920
Investment under the equity method					$ 4,754
Pemcorp SAPI de CV [Member]
Investments in associates [Abstract]
% Shares	[5]						30%
Non-current assets	[5]						$ 138,931
Current assets	[5]						112,352
Project debt	[5]						159,382
Other non-current liabilities	[5]						90,474
Other current liabilities	[5]						4,328
Revenue	[5]						45,625
Operating profit/(loss)	[5]						1,680
Net profit/(loss)	[5]						(17,747)
Investment under the equity method	[5]						$ 10,034
Pectonex, R.F. Proprietary Limited [Member]
Investments in associates [Abstract]
% Shares					50%		50%
Non-current assets					$ 1,749		$ 2,045
Current assets					0		0
Project debt					0		0
Other non-current liabilities					1		0
Other current liabilities					0		1
Revenue					0		0
Operating profit/(loss)					(149)		(168)
Net profit/(loss)					(149)		(168)
Investment under the equity method					$ 1,337		$ 1,411
Evacuacion Valdecaballeros, S.L. [Member]
Investments in associates [Abstract]
% Shares					57.16%		57.16%
Non-current assets					$ 15,839		$ 15,551
Current assets					1,005		1,020
Project debt					0		0
Other non-current liabilities					13,538		13,635
Other current liabilities					159		232
Revenue					878		860
Operating profit/(loss)					(59)		(60)
Net profit/(loss)					(91)		(89)
Investment under the equity method					$ 807		$ 858
Atlantica SailH2, S.L. [Member]
Investments in associates [Abstract]
% Shares					50%
Non-current assets					$ 499
Current assets					333
Project debt					0
Other non-current liabilities					0
Other current liabilities					165
Revenue					0
Operating profit/(loss)					0
Net profit/(loss)					0
Investment under the equity method					$ 653
Evacuacion Villanueva del Rey, S.L [Member]
Investments in associates [Abstract]
% Shares					40.02%		40.02%
Non-current assets					$ 2,218		$ 2,317
Current assets					83		12
Project debt					0		0
Other non-current liabilities					1,308		1,386
Other current liabilities					181		111
Revenue					0		0
Operating profit/(loss)					63		57
Net profit/(loss)					0		0
Investment under the equity method					$ 0		$ 0
Liberty Infraestructuras S.L. [Member]
Investments in associates [Abstract]
% Shares					20%		20%
Non-current assets					$ 81		$ 93
Current assets					357		283
Project debt					0		0
Other non-current liabilities					0		0
Other current liabilities					0		37
Revenue					4		0
Operating profit/(loss)					(46)		0
Net profit/(loss)					(68)		(22)
Investment under the equity method					$ 0		$ 29
Fontanil Solar, S.L.U. [Member]
Investments in associates [Abstract]
% Shares					25%		25%
Non-current assets					$ 328		$ 117
Current assets					13		7
Project debt					0		0
Other non-current liabilities					354		99
Other current liabilities					7		24
Revenue					0		0
Operating profit/(loss)					(1)		(1)
Net profit/(loss)					(18)		(2)
Investment under the equity method					$ 229		$ 229
Murum Solar, S.L.U. [Member]
Investments in associates [Abstract]
% Shares					25%		25%
Non-current assets					$ 266		$ 228
Current assets					35		8
Project debt					0		0
Other non-current liabilities					314		180
Other current liabilities					0		59
Revenue					0		0
Operating profit/(loss)					(1)		(1)
Net profit/(loss)					(15)		(5)
Investment under the equity method					$ 222		$ 222
[1]2007 Vento II, LLC, is the holding company of a 596 MW portfolio of wind assets in the U.S., 49% owned by Atlantica since June 16, 2021, and accounted for under the equity method in these Consolidated Financial Statements. Share of profit of 2007 Vento II, LLC.included in these Consolidated Financial Statements amounts to $9.7 million in 2023 and $20.1 million in 2022.[2]Windlectric Inc., the project entity, is 100% owned by Amherst Island Partnership which is accounted for under the equity method in these Consolidated Financial Statements.[3]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. Geida Tlemcen, S.L. is 50% owned by Atlantica. Share of profit of Myah Bahr Honaine S.P.A. included in these Consolidated Financial Statements amounts to $6.9 million in 2023 and $6.8 million in 2022.[4] Akuo Atlantica PMGD Holding S.P.A. is the holding company of a 80 MW portfolio of solar PV assets in Chile, which is currently under construction, 49% owned by Atlantica, with joint control since November 2022 and accounted for under the equity method in these Consolidated Financial Statement s.

Assets held for sale (Details)

Assets held for sale (Details) - USD ($) $ in Thousands		12 Months Ended
	Oct. 30, 2023	Dec. 31, 2023	Dec. 31, 2022
Assets held for sale [Abstract]
Proportion of voting rights held by non-controlling interests		70%
Assets held for sale		$ (10,194)	$ 0
Bottom of range [member]
Assets held for sale [Abstract]
Receivables		45,000
Top of range [member]
Assets held for sale [Abstract]
Receivables		52,000
Arroyo Netherlands II B.V [Member]
Assets held for sale [Abstract]
Loan granted by entity		$ 18,500
Pemcorp SAPI de CV [Member]
Assets held for sale [Abstract]
Assets held for sale	$ 10,200

Financial instruments by cate_3

Financial instruments by category, Reconciliation to statement of financial position (Details) $ in Thousands		12 Months Ended
		Dec. 31, 2023 USD ($) mi	Dec. 31, 2022 USD ($)	Nov. 30, 2022
Financial Assets [Abstract]
Financial assets		$ 1,060,252	$ 1,173,454
Percentage of interest acquired				49%
Financial Liabilities [Abstract]
Financial liabilities		5,658,134	5,790,405
Corporate Debt [Member]
Financial Liabilities [Abstract]
Financial liabilities	[1]	1,084,838	1,017,200
Project Debt [Member]
Financial Liabilities [Abstract]
Financial liabilities	[1]	4,319,260	4,553,052
Lease Liabilities (Non-Current Portion) [Member]
Financial Liabilities [Abstract]
Financial liabilities		82,366	63,076
Trade and Other Current Liabilities [Member]
Financial Liabilities [Abstract]
Financial liabilities		141,713	140,230
Derivative Liabilities [Member]
Financial Liabilities [Abstract]
Financial liabilities		29,957	16,847
Derivative Liabilities [Member]
Financial Assets [Abstract]
Financial assets		61,697	97,381
Investment in Ten West Link [Member]
Financial Assets [Abstract]
Financial assets		$ 11,719	15,959
Percentage of interest acquired		12.50%
Length of transmission lines | mi		114
Financial Assets under IFRIC 12 (Short-term Portion) [Member]
Financial Assets [Abstract]
Financial assets	[2]	$ 177,407	186,841
Trade and Other Receivables [Member]
Financial Assets [Abstract]
Financial assets		286,483	200,334
Cash and Cash Equivalents [Member]
Financial Assets [Abstract]
Financial assets		448,301	600,990
Other Financial Assets [Member]
Financial Assets [Abstract]
Financial assets		74,645	71,949
Amortized Cost [Member]
Financial Liabilities [Abstract]
Financial liabilities		5,628,177	5,773,558
Amortized Cost [Member] | Corporate Debt [Member]
Financial Liabilities [Abstract]
Financial liabilities	[1]	1,084,838	1,017,200
Amortized Cost [Member] | Project Debt [Member]
Financial Liabilities [Abstract]
Financial liabilities	[1]	4,319,260	4,553,052
Amortized Cost [Member] | Lease Liabilities (Non-Current Portion) [Member]
Financial Liabilities [Abstract]
Financial liabilities		82,366	63,076
Amortized Cost [Member] | Trade and Other Current Liabilities [Member]
Financial Liabilities [Abstract]
Financial liabilities		141,713	140,230
Amortized Cost [Member] | Derivative Liabilities [Member]
Financial Liabilities [Abstract]
Financial liabilities		0	0
Fair Value Through Profit or Loss [Member]
Financial Liabilities [Abstract]
Financial liabilities		29,957	16,847
Fair Value Through Profit or Loss [Member] | Corporate Debt [Member]
Financial Liabilities [Abstract]
Financial liabilities	[1]	0	0
Fair Value Through Profit or Loss [Member] | Project Debt [Member]
Financial Liabilities [Abstract]
Financial liabilities	[1]	0	0
Fair Value Through Profit or Loss [Member] | Lease Liabilities (Non-Current Portion) [Member]
Financial Liabilities [Abstract]
Financial liabilities		0	0
Fair Value Through Profit or Loss [Member] | Trade and Other Current Liabilities [Member]
Financial Liabilities [Abstract]
Financial liabilities		0	0
Fair Value Through Profit or Loss [Member] | Derivative Liabilities [Member]
Financial Liabilities [Abstract]
Financial liabilities		$ 29,957	$ 16,847
Interest Rate Risk [Member]
Financial Liabilities [Abstract]
Percentage of notional amount of corporate debt hedged		94%	96%
Percentage of notional amount of project debt hedged		92%	92%
Amortized Cost [Member]
Financial Assets [Abstract]
Financial assets		$ 986,836	$ 1,060,114
Amortized Cost [Member] | Derivative Liabilities [Member]
Financial Assets [Abstract]
Financial assets		0	0
Amortized Cost [Member] | Investment in Ten West Link [Member]
Financial Assets [Abstract]
Financial assets		0	0
Amortized Cost [Member] | Financial Assets under IFRIC 12 (Short-term Portion) [Member]
Financial Assets [Abstract]
Financial assets	[2]	177,407	186,841
Amortized Cost [Member] | Trade and Other Receivables [Member]
Financial Assets [Abstract]
Financial assets		286,483	200,334
Amortized Cost [Member] | Cash and Cash Equivalents [Member]
Financial Assets [Abstract]
Financial assets		448,301	600,990
Amortized Cost [Member] | Other Financial Assets [Member]
Financial Assets [Abstract]
Financial assets		74,645	71,949
Fair Value Through Other Comprehensive Income [Member]
Financial Assets [Abstract]
Financial assets		11,719	15,959
Fair Value Through Other Comprehensive Income [Member] | Derivative Liabilities [Member]
Financial Assets [Abstract]
Financial assets		0	0
Fair Value Through Other Comprehensive Income [Member] | Investment in Ten West Link [Member]
Financial Assets [Abstract]
Financial assets		11,719	15,959
Fair Value Through Other Comprehensive Income [Member] | Financial Assets under IFRIC 12 (Short-term Portion) [Member]
Financial Assets [Abstract]
Financial assets	[2]	0	0
Fair Value Through Other Comprehensive Income [Member] | Trade and Other Receivables [Member]
Financial Assets [Abstract]
Financial assets		0	0
Fair Value Through Other Comprehensive Income [Member] | Cash and Cash Equivalents [Member]
Financial Assets [Abstract]
Financial assets		0	0
Fair Value Through Other Comprehensive Income [Member] | Other Financial Assets [Member]
Financial Assets [Abstract]
Financial assets		0	0
Fair Value Through Profit or Loss [Member]
Financial Assets [Abstract]
Financial assets		61,697	97,381
Fair Value Through Profit or Loss [Member] | Derivative Liabilities [Member]
Financial Assets [Abstract]
Financial assets		61,697	97,381
Fair Value Through Profit or Loss [Member] | Investment in Ten West Link [Member]
Financial Assets [Abstract]
Financial assets		0	0
Fair Value Through Profit or Loss [Member] | Financial Assets under IFRIC 12 (Short-term Portion) [Member]
Financial Assets [Abstract]
Financial assets	[2]	0	0
Fair Value Through Profit or Loss [Member] | Trade and Other Receivables [Member]
Financial Assets [Abstract]
Financial assets		0	0
Fair Value Through Profit or Loss [Member] | Cash and Cash Equivalents [Member]
Financial Assets [Abstract]
Financial assets		0	0
Fair Value Through Profit or Loss [Member] | Other Financial Assets [Member]
Financial Assets [Abstract]
Financial assets		$ 0	$ 0
[1]The percentage of Corporate and Project debt at fixed interest or hedged is 94% and 92% respectively as of December 31, 2023 (96% and 92% respectively as of December 31, 2022).[2]The long-term portion of Financial assets under IFRIC 12 is included within the line Contracted concessional, PP&E and other intangible assets (Note 6).

Derivative financial instrume_3

Derivative financial instruments, Breakdown of fair value amounts (Details) - Cash Flow Hedge [Member] - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Breakdown of fair value amount of derivative financial instruments [Abstract]
Assets	$ 61,697	$ 97,381
Liabilities	29,957	16,847
Interest Rate Derivatives [Member]
Breakdown of fair value amount of derivative financial instruments [Abstract]
Assets	60,102	94,192
Liabilities	29,163	12,159
Foreign Exchange Derivative Instruments [Member]
Breakdown of fair value amount of derivative financial instruments [Abstract]
Assets	1,595	3,189
Liabilities	0	0
Notes Conversion Option [Member]
Breakdown of fair value amount of derivative financial instruments [Abstract]
Assets	0	0
Liabilities	$ 794	$ 4,688

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, 2023	Dec. 31, 2022	Dec. 31, 2021
Breakdown of Maturities of Notional and Fair Value Amounts [Abstract]
Gain (loss) on cash flow hedges	$ (27,115)	$ 38,187	$ 58,292
Cap [Member]
Breakdown of Maturities of Notional and Fair Value Amounts [Abstract]
Notionals	1,366,321	1,432,224
Fair value	$ 60,102	$ 94,192
Cap [Member] | Up to 1 Year [Member]
Breakdown of Maturities of Notional and Fair Value Amounts [Abstract]
Notionals	248,898	245,147
Fair value	$ 3,957	$ 10,868
Cap [Member] | Between 1 and 2 Years [Member]
Breakdown of Maturities of Notional and Fair Value Amounts [Abstract]
Notionals	279,215	310,393
Fair value	$ 10,124	$ 17,860
Cap [Member] | Between 2 and 3 Years [Member]
Breakdown of Maturities of Notional and Fair Value Amounts [Abstract]
Notionals	314,644	217,498
Fair value	$ 12,070	$ 12,257
Cap [Member] | Subsequent Years [Member]
Breakdown of Maturities of Notional and Fair Value Amounts [Abstract]
Notionals	523,564	659,186
Fair value	$ 33,951	$ 53,207
Swap [Member]
Breakdown of Maturities of Notional and Fair Value Amounts [Abstract]
Notionals	508,125	542,376
Fair value	$ (29,163)	$ (12,159)
Swap [Member] | Up to 1 Year [Member]
Breakdown of Maturities of Notional and Fair Value Amounts [Abstract]
Notionals	43,013	47,029
Fair value	$ (1,740)	$ (991)
Swap [Member] | Between 1 and 2 Years [Member]
Breakdown of Maturities of Notional and Fair Value Amounts [Abstract]
Notionals	95,701	102,476
Fair value	$ (5,347)	$ (2,189)
Swap [Member] | Between 2 and 3 Years [Member]
Breakdown of Maturities of Notional and Fair Value Amounts [Abstract]
Notionals	104,848	112,855
Fair value	$ (5,848)	$ (2,851)
Swap [Member] | Subsequent Years [Member]
Breakdown of Maturities of Notional and Fair Value Amounts [Abstract]
Notionals	264,563	280,016
Fair value	$ (16,228)	$ (6,128)
Cash Flow Hedge [Member]
Breakdown of Maturities of Notional and Fair Value Amounts [Abstract]
Fair value of financial liabilities	$ 29,957	$ 16,847
Interest Rate Derivatives [Member]
Breakdown of Maturities of Notional and Fair Value Amounts [Abstract]
Percentage of notional amount of project debt hedged	92%	92%
Percentage of notional amount of corporate debt hedged	94%	96%
Percent of notional amount of debt hedged in next 12 months	100%
Percentage of notional amount of debt hedged in year two	75%
Interest Rate Derivatives [Member] | Cash Flow Hedge [Member]
Breakdown of Maturities of Notional and Fair Value Amounts [Abstract]
Gain (loss) on cash flow hedges	$ 27,100	$ (38,200)	$ (58,300)
After-tax result accumulated in equity	308,000	345,600
Fair value of financial liabilities	29,163	12,159
Notes Conversion Option [Member] | Cash Flow Hedge [Member]
Breakdown of Maturities of Notional and Fair Value Amounts [Abstract]
Fair value of financial liabilities	$ 794	$ 4,688

Related parties (Details)

Related parties (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2023 USD ($) Director	Dec. 31, 2022 USD ($) Director	Dec. 31, 2021 USD ($)	Feb. 24, 2023
Transactions with Related Party [Abstract]
Financial income	$ 25,007	$ 10,149	$ 5,962
Financial expense	$ (323,749)	$ (330,445)	(360,898)
Loan interest rate				4.21%
Number of directors received pension remuneration | Director	0	0
Arroyo Netherlands II B.V [Member]
Details of Balances [Abstract]
Receivables (current)	$ 18,500
Arroyo Netherlands II B.V [Member] | SOFR [Member]
Transactions with Related Party [Abstract]
Interest rate	6.31%
Akuo Atlantica PMGD Holding [Member] | Fixed Interest Rate [Member]
Transactions with Related Party [Abstract]
Loan interest rate	8.75%
JGC Corporation [Member] | EURIBOR [Member]
Transactions with Related Party [Abstract]
Interest rate	2.50%
AYES Canada [Member]
Transactions with Related Party [Abstract]
Dividend receivable	$ 5,800
Colombian Portfolio of Renewable Energy Entities [Member]
Transactions with Related Party [Abstract]
Equity interest	50%
Colombian Portfolio of Renewable Energy Entities [Member] | Fixed Interest Rate [Member]
Transactions with Related Party [Abstract]
Loan interest rate	8%
Related Parties [Member]
Details of Balances [Abstract]
Receivables (current)	$ 25,204	$ 1,224
Receivables (non-current)	30,403	17,510
Payables (current)	8,031	6,073
Payables (non-current)	4,639	6,088
Related Parties [Member] | Non-controlling Interest [Member] | Algonquin [Member]
Details of Balances [Abstract]
Receivables (current)	0	0
Receivables (non-current)	0	0
Payables (current)	5,683	4,762
Payables (non-current)	0	0
Related Parties [Member] | Non-controlling Interest [Member] | JGC Corporation [Member]
Details of Balances [Abstract]
Receivables (current)	0	0
Receivables (non-current)	0	0
Payables (current)	0	0
Payables (non-current)	4,612	6,088
Related Parties [Member] | Non-controlling Interest [Member] | Other [Member]
Details of Balances [Abstract]
Receivables (current)	0	0
Receivables (non-current)	0	0
Payables (current)	2,314	1,311
Payables (non-current)	27	0
Related Parties [Member] | Entities Accounted for under the Equity Method [Member] | Arroyo Netherlands II B.V [Member]
Details of Balances [Abstract]
Receivables (current)	18,448	1,097
Receivables (non-current)	0	17,006
Payables (current)	0	0
Payables (non-current)	0	0
Related Parties [Member] | Entities Accounted for under the Equity Method [Member] | Amherst Island Partnership [Member]
Details of Balances [Abstract]
Receivables (current)	5,817	0
Receivables (non-current)	0	0
Payables (current)	0	0
Payables (non-current)	0	0
Related Parties [Member] | Entities Accounted for under the Equity Method [Member] | Akuo Atlantica PMGD Holding [Member]
Details of Balances [Abstract]
Receivables (current)	0	0
Receivables (non-current)	16,677	504
Payables (current)	0	0
Payables (non-current)	0	0
Related Parties [Member] | Entities Accounted for under the Equity Method [Member] | Colombian Assets Portfolio [Member]
Details of Balances [Abstract]
Receivables (current)	0	0
Receivables (non-current)	13,578	0
Payables (current)	34	0
Payables (non-current)	0	0
Related Parties [Member] | Entities Accounted for under the Equity Method [Member] | Other [Member]
Details of Balances [Abstract]
Receivables (current)	21	127
Receivables (non-current)	148	0
Payables (current)	0	0
Payables (non-current)	0	0
Other Related Parties [member] | Atlantica's Partner in Colombia [Member]
Details of Balances [Abstract]
Receivables (current)	918	0
Receivables (non-current)	0	0
Payables (current)	0	0
Payables (non-current)	0	0
Subsidiaries [Member]
Transactions with Related Party [Abstract]
Financial income	3,040	1,298	2,069
Financial expense	(471)	(153)	(97)
Operating income	325	0	0
Subsidiaries [Member] | Non-controlling Interest [Member] | Other [Member]
Transactions with Related Party [Abstract]
Financial income	0	23	8
Financial expense	(471)	(153)	(97)
Operating income	0	0	0
Subsidiaries [Member] | Entities Accounted for under the Equity Method [Member] | Arroyo Netherlands II B.V [Member]
Transactions with Related Party [Abstract]
Financial income	1,845	1,275	2,061
Financial expense	0	0	0
Operating income	0	0	0
Subsidiaries [Member] | Entities Accounted for under the Equity Method [Member] | Akuo Atlantica PMGD Holding [Member]
Transactions with Related Party [Abstract]
Financial income	607	0	0
Financial expense	0	0	0
Operating income	316	0	0
Subsidiaries [Member] | Entities Accounted for under the Equity Method [Member] | Colombian Assets Portfolio [Member]
Transactions with Related Party [Abstract]
Financial income	588	0	0
Financial expense	0	0	0
Operating income	0	0	0
Subsidiaries [Member] | Entities Accounted for under the Equity Method [Member] | Other [Member]
Transactions with Related Party [Abstract]
Financial income	0	0	0
Financial expense	0	0	0
Operating income	9	0	$ 0
Board of Directors and CEO [Member]
Transactions with Related Party [Abstract]
Remuneration received	4,000	5,700
Annual bonus	900	900
CEO [Member]
Transactions with Related Party [Abstract]
Long term award	$ 1,000	$ 3,000

Trade and other receivables (De

Trade and other receivables (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Trade and other receivables [Abstract]
Trade receivables	$ 213,345	$ 125,437
Tax receivables	37,134	45,680
Prepayments	12,717	11,827
Other accounts receivable	23,287	17,390
Trade and other receivables	286,483	200,334
Euros [Member]
Trade and other receivables [Abstract]
Trade receivables	53,012	4,088
South African Rand [Member]
Trade and other receivables [Abstract]
Trade receivables	0	23,416
Chilean Peso [Member]
Trade and other receivables [Abstract]
Trade receivables	4,431	5,037
Mexican Peso [Member]
Trade and other receivables [Abstract]
Trade receivables	4,557	1,298
Other [Member]
Trade and other receivables [Abstract]
Trade receivables	4,376	2,676
All Foreign Currencies [Member]
Trade and other receivables [Abstract]
Trade receivables	$ 66,376	$ 36,515

Cash and cash equivalents (Deta

Cash and cash equivalents (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Cash and cash equivalents [abstract]
Cash at bank and on hand - non restricted	$ 271,329	$ 393,430
Cash at bank and on hand - restricted	176,972	207,560
Cash and cash equivalents	448,301	600,990	$ 622,689	$ 868,501
U.S. Dollar [Member]
Cash and cash equivalents [abstract]
Cash and cash equivalents	266,200	309,756
Euro [Member]
Cash and cash equivalents [abstract]
Cash and cash equivalents	102,820	217,675
South African Rand [Member]
Cash and cash equivalents [abstract]
Cash and cash equivalents	30,908	36,137
Mexican Peso [Member]
Cash and cash equivalents [abstract]
Cash and cash equivalents	13,455	4,010
Algerian Dinar [Member]
Cash and cash equivalents [abstract]
Cash and cash equivalents	21,168	24,727
Other [Member]
Cash and cash equivalents [abstract]
Cash and cash equivalents	$ 13,750	$ 8,685

Equity (Details)

Equity (Details)

12 Months Ended

Feb. 29, 2024 $ / shares

Nov. 07, 2023 $ / shares

Jul. 31, 2023 $ / shares

May 04, 2023 $ / shares

Feb. 28, 2023 $ / shares

Nov. 08, 2022 $ / shares

Aug. 02, 2022 $ / shares

May 05, 2022 $ / shares

Feb. 25, 2022 $ / shares

Dec. 31, 2023 USD ($) Vote $ / shares shares

Dec. 31, 2022 USD ($) $ / shares shares

Dec. 31, 2021 USD ($)

Feb. 28, 2022 USD ($)

Equity [Abstract]

Share capital

$ 11,615,905

$ 11,605,513

Shares outstanding (in shares) | shares

116,159,054

116,055,126

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

$ 0.1

Voting right per share | Vote

1

Proportion of voting rights held by non-controlling interests

70%

Reduction of share premium

$ 0

$ 0

Capital contribution by non-controlling interests

$ 19,823,000

$ 0

0

Treasury shares held (in shares) | shares

0

0

Number of treasury share transactions in the period (in shares) | shares

0

0

Chile PV 3 [Member]

Equity [Abstract]

Capital contribution by non-controlling interests

$ 19,500,000

Subsequent Events [Member]

Equity [Abstract]

Dividend declaration date

Feb. 29, 2024

Fourth Quarter [Member]

Equity [Abstract]

Dividend declaration date

Feb. 28, 2023

Feb. 25, 2022

Dividend paid date

Mar. 25, 2023

Mar. 25, 2022

Dividends paid (in dollars per share) | $ / shares

$ 0.445

$ 0.44

Fourth Quarter [Member] | Subsequent Events [Member]

Equity [Abstract]

Dividend declaration date

Feb. 29, 2024

Dividend paid date

Mar. 22, 2024

Dividends paid (in dollars per share) | $ / shares

$ 0.445

First Quarter [Member]

Equity [Abstract]

Dividend declaration date

May 04, 2023

May 05, 2022

Dividend paid date

Jun. 15, 2023

Jun. 15, 2022

Dividends paid (in dollars per share) | $ / shares

$ 0.445

$ 0.44

Second Quarter [Member]

Equity [Abstract]

Dividend declaration date

Jul. 31, 2023

Aug. 02, 2022

Dividend paid date

Sep. 15, 2023

Sep. 15, 2022

Dividends paid (in dollars per share) | $ / shares

$ 0.445

$ 0.445

Third Quarter [Member]

Equity [Abstract]

Dividend declaration date

Nov. 07, 2023

Nov. 08, 2022

Dividend paid date

Dec. 15, 2023

Dec. 15, 2022

Dividends paid (in dollars per share) | $ / shares

$ 0.445

$ 0.445

Long-term Incentive Plans [Member]

Equity [Abstract]

Shares issued (in shares) | shares

103,928

228,560

Algonquin [Member]

Equity [Abstract]

Ownership interest

42.20%

Proportion of voting rights held by non-controlling interests

41.50%

Dividends paid to non-controlling interests

$ 16,600,000

$ 20,400,000

Itochu Corporation [Member]

Equity [Abstract]

Dividends paid to non-controlling interests

6,900,000

3,500,000

Algerian Energy Company, SPA [Member]

Equity [Abstract]

Dividends paid to non-controlling interests

6,700,000

5,400,000

IDC [Member]

Equity [Abstract]

Dividends paid to non-controlling interests

1,200,000

5,800,000

Kaxu Community Trust [Member]

Equity [Abstract]

Dividends paid to non-controlling interests

$ 1,200,000

$ 5,800,000

At the Market Program [Member]

Equity [Abstract]

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

$ 33.57

Shares issued (in shares) | shares

0

3,423,593

Net proceeds

$ 114,000,000

At the Market Program [Member] | Top of range [member]

Equity [Abstract]

Amount of offering

$ 150,000,000

Share Premium [Member]

Equity [Abstract]

Reduction of share premium

$ (250,000,000)

$ (200,000,000)

Corporate debt, Breakdown of co

Corporate debt, Breakdown of corporate debt (Details) $ in Thousands, € in Millions	Dec. 31, 2023 USD ($)	Feb. 24, 2023 USD ($)	Feb. 24, 2023 EUR (€)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Corporate debt [Abstract]
Non-current	$ 1,050,816			$ 1,000,503
Current	34,022			16,697
Total Corporate debt	$ 1,084,838	$ 7,700	€ 7	$ 1,017,200	$ 1,023,071

Corporate debt, Details of corp

Corporate debt, Details of corporate debt (Details) $ / shares in Units, $ in Thousands, € in Millions

12 Months Ended

May 10, 2023 USD ($)

Feb. 24, 2023 USD ($)

Jul. 08, 2020 USD ($)

Dec. 31, 2023 USD ($)

Dec. 31, 2022 USD ($)

Dec. 31, 2021 USD ($)

Dec. 31, 2023 EUR (€)

Nov. 21, 2023 USD ($)

Aug. 07, 2023 USD ($)

Aug. 07, 2023 EUR (€)

Feb. 24, 2023 EUR (€)

Dec. 31, 2022 EUR (€)

Mar. 31, 2022 USD ($)

Jan. 31, 2022 USD ($)

Jan. 31, 2022 EUR (€)

May 18, 2021 USD ($)

Dec. 04, 2020 USD ($)

Dec. 04, 2020 EUR (€)

Jul. 29, 2020 USD ($)

Jul. 17, 2020 USD ($) $ / shares shares

Jul. 08, 2020 EUR (€)

Mar. 31, 2020 USD ($)

Mar. 31, 2020 EUR (€)

Oct. 08, 2019 USD ($)

Oct. 08, 2019 EUR (€)

May 10, 2018 USD ($)

Jul. 20, 2017 USD ($)

Jul. 20, 2017 EUR (€)

Corporate debt [Abstract]

Fixed interest rate

4.21%

4.21%

Corporate debt

$ 7,700

$ 1,084,838

$ 1,017,200

$ 1,023,071

€ 7

Amount drawn

161,498

101,140

$ 429,014

Maturity date

February 24, 2028

2017 Credit Facility [Member]

Corporate debt [Abstract]

Credit facility amount

$ 16,600

€ 15

Corporate debt

9,889

6,431

Amount drawn

$ 9,900

$ 6,400

Maturity date

July 1, 2025

July 1, 2024

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

Corporate debt [Abstract]

Credit facility amount

$ 11,000

€ 10

2017 Credit Facility [Member] | EURIBOR [Member]

Corporate debt [Abstract]

Adjustment to interest rate

2%

2%

2017 Credit Facility [Member] | EURIBOR [Member] | Bottom of Range [Member]

Corporate debt [Abstract]

Adjustment to interest rate

0%

0%

2017 Credit Facility [Member] | SOFR [Member]

Corporate debt [Abstract]

Adjustment to interest rate

2%

2%

2017 Credit Facility [Member] | SOFR [Member] | Bottom of Range [Member]

Corporate debt [Abstract]

Adjustment to interest rate

0%

0%

Line of Credit [Member]

Corporate debt [Abstract]

Credit facility amount

$ 50,000

Maturity date

May 25, 2026

Maturity period

3 years

Line of Credit [Member] | SOFR [Member]

Corporate debt [Abstract]

Adjustment to interest rate

0%

Line of Credit [Member] | SOFR [Member] | Bottom of Range [Member]

Corporate debt [Abstract]

Adjustment to interest rate

2.46%

Line of Credit [Member] | SOFR [Member] | Top of Range [Member]

Corporate debt [Abstract]

Adjustment to interest rate

3.11%

Revolving Credit Facility [Member]

Corporate debt [Abstract]

Credit facility amount

$ 450,000

$ 215,000

Corporate debt

$ 54,688

$ 29,499

Amount drawn

55,000

30,000

Credit facility amount available

$ 378,000

385,000

Maturity date

December 31, 2025

Letters of Credit [Member]

Corporate debt [Abstract]

Credit facility amount

$ 100,000

Amount drawn

17,000

35,000

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%

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

Corporate debt [Abstract]

Adjustment to interest rate

0.50%

Base Rate Loans [Member] | SOFR [Member]

Corporate debt [Abstract]

Adjustment to interest rate

1%

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

Corporate debt [Abstract]

Adjustment to interest rate

1.60%

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

Corporate debt [Abstract]

Adjustment to interest rate

2.25%

Eurodollar Rate Loans [Member] | SOFR [Member]

Corporate debt [Abstract]

Adjustment to interest rate

0.10%

Commercial Paper [Member]

Corporate debt [Abstract]

Corporate debt

25,691

9,937

Short term notes issued amount

$ 25,700

10,100

€ 23.3

€ 9.3

Term of short term notes

2 years

Percentage average cost of issued short term notes

5.23%

Commercial Paper [Member] | Top of Range [Member]

Corporate debt [Abstract]

Short term notes issued amount

$ 100,000

$ 55,000

€ 50

2020 Green Private Placement [Member]

Corporate debt [Abstract]

Principal amount

$ 320,000

€ 290

Corporate debt

$ 318,842

308,812

Adjustment to interest rate

1.96%

1.96%

Maturity date

June 2026

Note Issuance Facility 2020 [Member]

Corporate debt [Abstract]

Fixed interest rate

5.25%

5.25%

Credit facility amount

$ 155,000

€ 140

Corporate debt

$ 152,356

147,257

Adjustment to interest rate

4%

4%

Maturity date

December 31, 2024

Maturity period

7 years

Note Issuance Facility 2020 [Member] | EURIBOR [Member]

Corporate debt [Abstract]

Variable interest period

3 months

Adjustment to interest rate

0%

0%

Interest capitalization period

3 years 6 months

Green Exchangeable Notes Due 2025 [Member]

Corporate debt [Abstract]

Fixed interest rate

4%

Corporate debt

$ 112,128

109,162

Maturity date

July 15, 2025

Principal amount of notes issued

$ 15,000

$ 100,000

Exchange rate of notes (in shares) | shares

29.107

Principal amount of notes for exchange rate

$ 1,000

Initial exchange price of notes (in dollars per share) | $ / shares

$ 34.36

Amount of transaction date of fair value fair value are accounted for through the profit and loss statement

$ 10,000

Bank Loan [Member]

Corporate debt [Abstract]

Fixed interest rate

2.50%

2.50%

Corporate debt

$ 5,500

€ 5

Maturity date

December 4, 2025

BBVA Loan [Member]

Corporate debt [Abstract]

Fixed interest rate

1.90%

1.90%

Corporate debt

$ 5,500

€ 5

Maturity date

January 31, 2026

Green Senior Notes Due 2028 [Member]

Corporate debt [Abstract]

Principal amount

$ 400,000

Fixed interest rate

4.125%

Corporate debt

$ 396,927

$ 396,024

Maturity date

May 15, 2028

Corporate debt, Repayment sched

Corporate debt, Repayment schedule (Details) $ in Thousands, € in Millions	Dec. 31, 2023 USD ($)	Feb. 24, 2023 USD ($)	Feb. 24, 2023 EUR (€)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Repayment schedule [Abstract]
Corporate debt	$ 1,084,838	$ 7,700	€ 7	$ 1,017,200	$ 1,023,071
2023 and 2024 [Member]
Repayment schedule [Abstract]
Corporate debt	34,022			16,697
2024 and 2025 [Member]
Repayment schedule [Abstract]
Corporate debt	179,059			38,932
2025 and 2026 [Member]
Repayment schedule [Abstract]
Corporate debt	320,956			110,179
2026 and 2027 [Member]
Repayment schedule [Abstract]
Corporate debt	153,998			309,075
2027 and 2028 [Member]
Repayment schedule [Abstract]
Corporate debt	396,803			147,257
Subsequent Years [Member]
Repayment schedule [Abstract]
Corporate debt	0			395,060
2017 Credit Facility [Member]
Repayment schedule [Abstract]
Corporate debt	9,889			6,431
2017 Credit Facility [Member] | 2023 and 2024 [Member]
Repayment schedule [Abstract]
Corporate debt	13			8
2017 Credit Facility [Member] | 2024 and 2025 [Member]
Repayment schedule [Abstract]
Corporate debt	9,876			6,423
2017 Credit Facility [Member] | 2025 and 2026 [Member]
Repayment schedule [Abstract]
Corporate debt	0			0
2017 Credit Facility [Member] | 2026 and 2027 [Member]
Repayment schedule [Abstract]
Corporate debt	0			0
2017 Credit Facility [Member] | 2027 and 2028 [Member]
Repayment schedule [Abstract]
Corporate debt	0			0
2017 Credit Facility [Member] | Subsequent Years [Member]
Repayment schedule [Abstract]
Corporate debt				0
Revolving Credit Facility [Member]
Repayment schedule [Abstract]
Corporate debt	54,688			29,499
Revolving Credit Facility [Member] | 2023 and 2024 [Member]
Repayment schedule [Abstract]
Corporate debt	261			112
Revolving Credit Facility [Member] | 2024 and 2025 [Member]
Repayment schedule [Abstract]
Corporate debt	54,427			29,387
Revolving Credit Facility [Member] | 2025 and 2026 [Member]
Repayment schedule [Abstract]
Corporate debt	0			0
Revolving Credit Facility [Member] | 2026 and 2027 [Member]
Repayment schedule [Abstract]
Corporate debt	0			0
Revolving Credit Facility [Member] | 2027 and 2028 [Member]
Repayment schedule [Abstract]
Corporate debt	0			0
Revolving Credit Facility [Member] | Subsequent Years [Member]
Repayment schedule [Abstract]
Corporate debt				0
Commercial Paper [Member]
Repayment schedule [Abstract]
Corporate debt	25,691			9,937
Commercial Paper [Member] | 2023 and 2024 [Member]
Repayment schedule [Abstract]
Corporate debt	25,691			9,937
Commercial Paper [Member] | 2024 and 2025 [Member]
Repayment schedule [Abstract]
Corporate debt	0			0
Commercial Paper [Member] | 2025 and 2026 [Member]
Repayment schedule [Abstract]
Corporate debt	0			0
Commercial Paper [Member] | 2026 and 2027 [Member]
Repayment schedule [Abstract]
Corporate debt	0			0
Commercial Paper [Member] | 2027 and 2028 [Member]
Repayment schedule [Abstract]
Corporate debt	0			0
Commercial Paper [Member] | Subsequent Years [Member]
Repayment schedule [Abstract]
Corporate debt				0
2020 Green Private Placement [Member]
Repayment schedule [Abstract]
Corporate debt	318,842			308,812
2020 Green Private Placement [Member] | 2023 and 2024 [Member]
Repayment schedule [Abstract]
Corporate debt	174			423
2020 Green Private Placement [Member] | 2024 and 2025 [Member]
Repayment schedule [Abstract]
Corporate debt	0			0
2020 Green Private Placement [Member] | 2025 and 2026 [Member]
Repayment schedule [Abstract]
Corporate debt	318,668			0
2020 Green Private Placement [Member] | 2026 and 2027 [Member]
Repayment schedule [Abstract]
Corporate debt	0			308,389
2020 Green Private Placement [Member] | 2027 and 2028 [Member]
Repayment schedule [Abstract]
Corporate debt	0			0
2020 Green Private Placement [Member] | Subsequent Years [Member]
Repayment schedule [Abstract]
Corporate debt				0
2020 Note Issuance Facility [Member]
Repayment schedule [Abstract]
Corporate debt	152,356			147,257
2020 Note Issuance Facility [Member] | 2023 and 2024 [Member]
Repayment schedule [Abstract]
Corporate debt	0			0
2020 Note Issuance Facility [Member] | 2024 and 2025 [Member]
Repayment schedule [Abstract]
Corporate debt	0			0
2020 Note Issuance Facility [Member] | 2025 and 2026 [Member]
Repayment schedule [Abstract]
Corporate debt	0			0
2020 Note Issuance Facility [Member] | 2026 and 2027 [Member]
Repayment schedule [Abstract]
Corporate debt	152,356			0
2020 Note Issuance Facility [Member] | 2027 and 2028 [Member]
Repayment schedule [Abstract]
Corporate debt	0			147,257
2020 Note Issuance Facility [Member] | Subsequent Years [Member]
Repayment schedule [Abstract]
Corporate debt				0
Green Exchangeable Notes [Member]
Repayment schedule [Abstract]
Corporate debt	112,128			109,162
Green Exchangeable Notes [Member] | 2023 and 2024 [Member]
Repayment schedule [Abstract]
Corporate debt	2,108			2,107
Green Exchangeable Notes [Member] | 2024 and 2025 [Member]
Repayment schedule [Abstract]
Corporate debt	110,020			0
Green Exchangeable Notes [Member] | 2025 and 2026 [Member]
Repayment schedule [Abstract]
Corporate debt	0			107,055
Green Exchangeable Notes [Member] | 2026 and 2027 [Member]
Repayment schedule [Abstract]
Corporate debt	0			0
Green Exchangeable Notes [Member] | 2027 and 2028 [Member]
Repayment schedule [Abstract]
Corporate debt	0			0
Green Exchangeable Notes [Member] | Subsequent Years [Member]
Repayment schedule [Abstract]
Corporate debt				0
Green Senior Notes [Member]
Repayment schedule [Abstract]
Corporate debt	396,927			396,024
Green Senior Notes [Member] | 2023 and 2024 [Member]
Repayment schedule [Abstract]
Corporate debt	963			964
Green Senior Notes [Member] | 2024 and 2025 [Member]
Repayment schedule [Abstract]
Corporate debt	0			0
Green Senior Notes [Member] | 2025 and 2026 [Member]
Repayment schedule [Abstract]
Corporate debt	0			0
Green Senior Notes [Member] | 2026 and 2027 [Member]
Repayment schedule [Abstract]
Corporate debt	0			0
Green Senior Notes [Member] | 2027 and 2028 [Member]
Repayment schedule [Abstract]
Corporate debt	395,964			0
Green Senior Notes [Member] | Subsequent Years [Member]
Repayment schedule [Abstract]
Corporate debt				395,060
Other Bank Loans [Member]
Repayment schedule [Abstract]
Corporate debt	14,317			10,078
Other Bank Loans [Member] | 2023 and 2024 [Member]
Repayment schedule [Abstract]
Corporate debt	4,812			3,146
Other Bank Loans [Member] | 2024 and 2025 [Member]
Repayment schedule [Abstract]
Corporate debt	4,736			3,122
Other Bank Loans [Member] | 2025 and 2026 [Member]
Repayment schedule [Abstract]
Corporate debt	2,288			3,124
Other Bank Loans [Member] | 2026 and 2027 [Member]
Repayment schedule [Abstract]
Corporate debt	1,642			686
Other Bank Loans [Member] | 2027 and 2028 [Member]
Repayment schedule [Abstract]
Corporate debt	$ 839			0
Other Bank Loans [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) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Movement in corporate debt [Abstract]
Beginning balance	$ 1,017,200	$ 1,023,071
Nominal increase	162,185	101,140
Nominal repayment	(115,891)	(80,519)
Interest payment	(40,573)	(38,117)
Total cash changes	5,721	(17,496)
Interest accrued	40,570	38,321
Currency translation differences	16,292	(30,842)
Other non-cash changes	5,055	4,146
Reclassifications	0	0
Total non-cash changes	61,917	11,625
Ending balance	1,084,838	1,017,200
Corporate Debt - Long Term [Member]
Movement in corporate debt [Abstract]
Beginning balance	1,000,503	995,190
Nominal increase	35,648	35,574
Nominal repayment	0	(1,323)
Interest payment	0	0
Total cash changes	35,648	34,251
Interest accrued	0	0
Currency translation differences	15,037	(29,419)
Other non-cash changes	5,055	4,146
Reclassifications	(5,427)	(3,665)
Total non-cash changes	14,665	(28,938)
Ending balance	1,050,816	1,000,503
Corporate Debt - Short Term [Member]
Movement in corporate debt [Abstract]
Beginning balance	16,697	27,881
Nominal increase	126,537	65,566
Nominal repayment	(115,891)	(79,196)
Interest payment	(40,573)	(38,117)
Total cash changes	(29,927)	(51,747)
Interest accrued	40,570	38,321
Currency translation differences	1,255	(1,423)
Other non-cash changes	0	0
Reclassifications	5,427	3,665
Total non-cash changes	47,252	40,563
Ending balance	$ 34,022	$ 16,697

Project debt, Variations of pro

Project debt, Variations of project debt (Details) $ in Thousands, € in Millions			12 Months Ended
		Feb. 24, 2023	Dec. 31, 2023 USD ($) Agreement	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Mar. 31, 2023 EUR (€)
Project debt [Abstract]
Cash held to satisfy non-recourse debt agreements			$ 177	$ 208
Total Project Debt [Abstract]
Beginning balance			4,553,052	5,036,193
Nominal increase			213,232
Nominal repayment			(518,344)	(384,107)
Interest payment			(227,145)	(232,855)
Total cash changes			(532,257)	(616,962)
Interest accrued			227,418	230,237
Business combination				1,449
Currency translation differences			35,958	(137,108)
Other non-cash changes			35,089	39,243
Reclassifications			0	0
Total non-cash changes			298,465	133,821
Ending balance			4,319,260	$ 4,553,052	$ 5,036,193
Project debt [Abstract]
Maturity date		February 24, 2028
Percentage of ownership equity interest				49%	49%
Short-term project debt			$ 387,387	$ 326,534
Chile PV1 [Member]
Project debt [Abstract]
Percentage of ownership equity interest			35%
Short-term project debt			$ 50,000
Chile PV 2 [Member]
Project debt [Abstract]
Short-term project debt			$ 21,000
Green Senior Notes [Member]
Project debt [Abstract]
Number of loan agreements | Agreement			2
Project debt financed amount | €						€ 198
Maturity date			June 2037
Project Debt - Long-term [Member]
Total Project Debt [Abstract]
Beginning balance			$ 4,226,518	4,387,674
Nominal increase			213,232
Nominal repayment			(4,768)	(73,478)
Interest payment			0	0
Total cash changes			208,464	(73,478)
Interest accrued			0	0
Business combination				1,301
Currency translation differences			28,808	(119,068)
Other non-cash changes			35,024	39,161
Reclassifications			(566,941)	(9,072)
Total non-cash changes			(503,109)	(87,678)
Ending balance			3,931,873	4,226,518	$ 4,387,674
Project Debt - Short-term [Member]
Total Project Debt [Abstract]
Beginning balance			326,534	648,519
Nominal increase			0
Nominal repayment			(513,576)	(310,629)
Interest payment			(227,145)	(232,855)
Total cash changes			(740,721)	(543,484)
Interest accrued			227,418	230,237
Business combination				148
Currency translation differences			7,150	(18,040)
Other non-cash changes			65	82
Reclassifications			566,941	9,072
Total non-cash changes			801,574	221,499
Ending balance			$ 387,387	$ 326,534	648,519
Kaxu [Member]
Project debt [Abstract]
Percentage of ownership equity interest	[1]		51%
Short-term project debt					$ 314,000
[1] Kaxu is owned by the Company (51%), Industrial Development Corporation of South Africa (“IDC”, 29%) and Kaxu Community Trust (20%).

Project debt, Repayment schedul

Project debt, Repayment schedule (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Repayment schedule [Abstract]
Project debt	$ 4,319,260	$ 4,553,052	$ 5,036,193
2023 [Member]
Repayment schedule [Abstract]
Interest payment		15,053
Nominal repayment		311,481
2024 [Member]
Repayment schedule [Abstract]
Interest payment	15,215
Nominal repayment	305,087
Project debt		323,731
2025 [Member]
Repayment schedule [Abstract]
Project debt	325,303	442,920
2026 [Member]
Repayment schedule [Abstract]
Project debt	352,495	358,444
2027 [Member]
Repayment schedule [Abstract]
Project debt	499,968	504,954
2028 [Member]
Repayment schedule [Abstract]
Project debt	464,648
Subsequent Years [Member]
Repayment schedule [Abstract]
Project debt	$ 2,356,544	$ 2,596,469

Project debt, Movement in proje

Project debt, Movement in project debt and Significant foreign currency denominated debts (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Project debt [Abstract]
Project debt	$ 4,319,260	$ 4,553,052	$ 5,036,193
Euro [Member]
Project debt [Abstract]
Project debt	1,571,369	1,633,790
South African Rand [Member]
Project debt [Abstract]
Project debt	233,854	277,492
Algerian Dinar [Member]
Project debt [Abstract]
Project debt	76,277	86,739
All Foreign Currencies [Member]
Project debt [Abstract]
Project debt	$ 1,881,500	$ 1,998,021

Grants and other liabilities, G

Grants and other liabilities, Grant and other non-current liabilities (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2023 USD ($) Type	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Grants and other liabilities [Abstract]
Grants	$ 852,854	$ 911,593
Other liabilities and provisions	380,954	340,920
Dismantling provision	155,279	140,595
Lease liabilities	82,366	63,076
Accruals on Spanish market prices differences	98,820	91,884
Other	44,489	45,365
Grant and other non-current liabilities	$ 1,233,808	1,252,513
Number of grant types | Type	2
Income from grants	$ 58,742	59,056	$ 60,746
Accruals on Spanish market prices differences	12,475	11,936
Solana and Mojave [Member]
Grants and other liabilities [Abstract]
Income from grants	58,500	58,600
U.S. Department of Treasury [Member]
Grants and other liabilities [Abstract]
Grants	578,000	610,000
Federal Financing Bank [Member]
Grants and other liabilities [Abstract]
Grants	$ 273,000	$ 299,000

Grants and other liabilities, M

Grants and other liabilities, Maturity of other liabilities and provisions (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Maturity of other liabilities and provisions [Abstract]
Other liabilities and provisions	$ 380,954	$ 340,920
2023 and 2024 [Member]
Maturity of other liabilities and provisions [Abstract]
Other liabilities and provisions	0	0
2024 and 2025 [Member]
Maturity of other liabilities and provisions [Abstract]
Other liabilities and provisions	26,503	26,393
2025 and 2026 [Member]
Maturity of other liabilities and provisions [Abstract]
Other liabilities and provisions	21,714	20,096
2026 and 2027 [Member]
Maturity of other liabilities and provisions [Abstract]
Other liabilities and provisions	22,975	20,561
2027 and 2028 [Member]
Maturity of other liabilities and provisions [Abstract]
Other liabilities and provisions	22,367	20,867
Subsequent [Member]
Maturity of other liabilities and provisions [Abstract]
Other liabilities and provisions	$ 287,395	$ 253,003

Trade payables and other curr_3

Trade payables and other current liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Trade payables and other current liabilities [Abstract]
Trade accounts payables	$ 77,266	$ 84,465
Accruals on Spanish market prices differences	12,475	11,936
Down payments from clients and other deferred income	16,905	11,169
Other accounts payables	35,067	32,660
Total	$ 141,713	$ 140,230

Income Tax, Analysis of deferre

Income Tax, Analysis of deferred tax assets and liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Net deferred tax assets and liabilities [abstract]
Deferred tax assets	$ 664,035	$ 586,099
Deferred tax liabilities	774,328	732,924
Deferred Tax Assets and Liabilities [Abstract]
Deferred tax assets	160,995	149,656	$ 172,268
Deferred tax liabilities	271,288	296,481	$ 308,859
Net deferred tax liabilities	110,293	146,825
U.S [Member]
Net deferred tax assets and liabilities [abstract]
Deferred tax assets	310,000	278,000
South Africa [Member]
Net deferred tax assets and liabilities [abstract]
Deferred tax assets	46,000	53,000
Peru [Member]
Net deferred tax assets and liabilities [abstract]
Deferred tax assets	46,000	46,000
Chile [Member]
Net deferred tax assets and liabilities [abstract]
Deferred tax assets	38,000	35,000
Spain [Member]
Net deferred tax assets and liabilities [abstract]
Deferred tax assets	33,000	28,000
Net Operating Loss Carryforwards ("NOL's") [Member]
Net deferred tax assets and liabilities [abstract]
Deferred tax assets	478,179	442,415
Deferred Tax Assets and Liabilities [Abstract]
Unrecognized net operating loss carryforwards	448,000	477,000
Temporary Tax Non-deductible Expenses [Member]
Net deferred tax assets and liabilities [abstract]
Deferred tax assets	158,201	134,328
Temporary Tax Non-deductible Expenses [Member] | U.S. Assets [Member]
Deferred Tax Assets and Liabilities [Abstract]
Deferred tax assets	49,000	25,000
Temporary Tax Non-deductible Expenses [Member] | Solar Plants in Spain [Member]
Deferred Tax Assets and Liabilities [Abstract]
Deferred tax assets	93,000	94,000
Derivatives Financial Instruments [Member]
Net deferred tax assets and liabilities [abstract]
Deferred tax assets	6,855	3,461
Deferred tax liabilities	12,989	19,034
Accelerated Tax Amortization [Member]
Net deferred tax assets and liabilities [abstract]
Deferred tax liabilities	589,111	524,363
Accelerated Tax Amortization [Member] | U.S. Assets [Member]
Deferred Tax Assets and Liabilities [Abstract]
Deferred tax liabilities	339,000	274,000
Accelerated Tax Amortization [Member] | Solar Plants in Spain [Member]
Deferred Tax Assets and Liabilities [Abstract]
Deferred tax liabilities	173,000	173,000
Accelerated Tax Amortization [Member] | Kaxu [Member]
Deferred Tax Assets and Liabilities [Abstract]
Deferred tax liabilities	55,000	63,000
Other Difference Between Tax and Book Value of Assets [Member]
Net deferred tax assets and liabilities [abstract]
Deferred tax liabilities	154,875	186,536
Other Difference Between Tax and Book Value of Assets [Member] | U.S [Member]
Deferred Tax Assets and Liabilities [Abstract]
Deferred tax liabilities	43,000	51,000
Other Difference Between Tax and Book Value of Assets [Member] | ACT [Member]
Deferred Tax Assets and Liabilities [Abstract]
Deferred tax liabilities	34,000	56,000
Other Difference Between Tax and Book Value of Assets [Member] | Peruvian [Member]
Deferred Tax Assets and Liabilities [Abstract]
Deferred tax liabilities	39,000	37,000
Other Difference Between Tax and Book Value of Assets [Member] | Chilean [Member]
Deferred Tax Assets and Liabilities [Abstract]
Deferred tax liabilities	27,000	27,000
Other [Member]
Net deferred tax assets and liabilities [abstract]
Deferred tax assets	20,800	5,895
Deferred tax liabilities	$ 17,353	$ 2,991

Income Tax, Movements in deferr

Income Tax, Movements in deferred tax assets and liabilities (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Deferred tax assets [Abstract]
Beginning of period	$ 149,656	$ 172,268
Increase/(decrease) through the consolidated profit and loss statement	7,327	29,197
Increase/(decrease) through other consolidated comprehensive income (equity)	2,207	(46,344)
Currency translation differences and other	1,805	(5,465)
End of period	160,995	149,656
Deferred tax liabilities [Abstract]
Beginning of period	296,481	308,859
Increase/(decrease) through the consolidated profit and loss statement	(27,055)	(19,864)
Increase/(decrease) through other consolidated comprehensive income (equity)	(5,830)	17,608
Currency translation differences and other	7,692	(10,122)
End of period	$ 271,288	$ 296,481

Income Tax, Income tax benefit_

Income Tax, Income tax benefit/(expense) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income Tax [Abstract]
Current tax	$ (35,172)	$ (39,372)	$ (51,016)
Deferred tax	34,382	49,061	14,796
Deferred tax expense (income) relating to the origination and reversal of temporary differences	34,382	49,061	14,796
Total income tax (expense)/income	$ (790)	$ 9,689	$ (36,220)

Income Tax, Effective income ta

Income Tax, Effective income tax rate reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income Tax [Abstract]
Consolidated profit/(loss) before taxes	$ 37,238	$ (11,776)	$ 25,302
Average statutory tax rate	25%	25%	25%
Corporate income tax at average statutory tax rate	$ (9,310)	$ 2,944	$ (6,326)
Income tax of associates, net	3,302	5,366	3,076
Differences in statutory tax rates	(4,270)	(4,296)	(3,359)
Unrecognized NOLs and deferred tax assets	(11,070)	(10,944)	(11,232)
Permanent differences	17,493	3,957	(4,052)
Other adjustments to taxable income and expense	3,065	12,662	(14,327)
Total income tax (expense)/income	$ (790)	$ 9,689	$ (36,220)
Effective tax rate	25%	25%	25%

Commitments, third-party guar_3

Commitments, third-party guarantees, contingent assets and liabilities (Details) $ in Thousands, € in Millions		12 Months Ended
		Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($) Utility Generator	Dec. 31, 2021 USD ($) Generator Utility	Feb. 24, 2023 USD ($)	Feb. 24, 2023 EUR (€)	Jan. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)
Contractual Obligations [Abstract]
Corporate debt		$ 1,084,838	$ 1,017,200	$ 1,023,071	$ 7,700	€ 7
Loans with credit institutions (Project debt) (Note 16)		3,393,767	3,595,671
Notes and bonds (Project debt) (Note 16)		925,493	957,381
Purchase commitments	[1]	713,509	823,856
Accrued interest estimate during the useful life of loans		1,717,831	1,821,915
Non-current lease commitments		82,366	63,076
Third-party Guarantees [Abstract]
Bank bond and surety insurance deposited as guarantee		83,200	88,000
Issuance of guarantees outstanding amount		239,800	$ 216,900
Legal Proceedings [Abstract]
Number of utilities | Utility			2	2
Ownership interest			49%	49%
Bottom of Range [Member]
Legal Proceedings [Abstract]
Number of individual power generators | Generator			230	230
Purchase Commitments [Member]
Contractual Obligations [Abstract]
Lease commitments		135,100	$ 112,000
Current lease commitments		9,400	7,900
Non-current lease commitments		125,700	104,100
2023 and 2024 [Member]
Contractual Obligations [Abstract]
Corporate debt		34,022	16,697
Loans with credit institutions (Project debt) (Note 16)		265,649	273,556
Notes and bonds (Project debt) (Note 16)		54,653	52,978
Purchase commitments	[1]	81,868	96,847
Accrued interest estimate during the useful life of loans		264,223	264,626
2024 and 2025 [Member]
Contractual Obligations [Abstract]
Corporate debt		179,059	38,932
Loans with credit institutions (Project debt) (Note 16)		273,015	275,105
Notes and bonds (Project debt) (Note 16)		52,288	48,626
Purchase commitments	[1]	52,814	99,597
Accrued interest estimate during the useful life of loans		257,379	248,794
2025 and 2026 [Member]
Contractual Obligations [Abstract]
Corporate debt		320,956	110,179
Loans with credit institutions (Project debt) (Note 16)		298,527	391,770
Notes and bonds (Project debt) (Note 16)		53,968	51,150
Purchase commitments	[1]	47,164	54,747
Accrued interest estimate during the useful life of loans		224,032	229,142
2026 and 2027 [Member]
Contractual Obligations [Abstract]
Corporate debt		153,998	309,075
Loans with credit institutions (Project debt) (Note 16)		443,503	305,616
Notes and bonds (Project debt) (Note 16)		56,465	52,828
Purchase commitments	[1]	51,768	51,058
Accrued interest estimate during the useful life of loans		198,073	203,961
2027 and 2028 [Member]
Contractual Obligations [Abstract]
Corporate debt		396,803	147,257
Loans with credit institutions (Project debt) (Note 16)		406,282	449,653
Notes and bonds (Project debt) (Note 16)		58,366	55,301
Purchase commitments	[1]	45,243	56,852
Accrued interest estimate during the useful life of loans		161,346	179,386
Subsequent [Member]
Contractual Obligations [Abstract]
Corporate debt		0	395,060
Loans with credit institutions (Project debt) (Note 16)		1,706,791	1,899,971
Notes and bonds (Project debt) (Note 16)		649,753	696,498
Purchase commitments	[1]	434,652	464,755
Accrued interest estimate during the useful life of loans		$ 612,778	$ 696,006
Abengoa [Member]
Legal Proceedings [Abstract]
Amount withdrawn from escrow							$ 2,500
Abengoa [Member] | Mexico [Member]
Legal Proceedings [Abstract]
Estimated maximum potential exposure								$ 35,000
Amount held in escrow								$ 2,500
[1]Purchase commitments include lease commitments for lease arrangements accounted for under IFRS 16 for $135.1 million as of December 31, 2023 ($112.0 million as of December 31, 2022), of which $9.4 million is due within one year and $125.7 million thereafter as of December 31, 2023 ($7.9 million due within one year and $104.1 million thereafter as of December 31, 2022).

Employee benefit expenses (Deta

Employee benefit expenses (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Employee benefit expenses [Abstract]
Employee benefit expenses	$ 104,083	$ 80,232	$ 78,758
Average number of employees	1,304	874	655

Other operating income and ex_3

Other operating income and expenses (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Other operating income [Abstract]
Grants	$ 58,742	$ 59,056	$ 60,746
Insurance proceeds and other	35,731	21,726	13,925
Income from construction services for contracted concessional assets of the Company accounted for under IFRIC 12	6,614	0	0
Total	101,087	80,782	74,670
Other operating expenses [Abstract]
Raw materials and consumables used	(35,380)	(19,639)	(70,690)
Leases and fees	(14,403)	(11,512)	(9,332)
Operation and maintenance	(130,442)	(140,382)	(154,007)
Independent professional services	(30,656)	(38,894)	(39,177)
Supplies	(37,822)	(59,336)	(40,790)
Insurance	(41,087)	(45,756)	(45,429)
Levies and duties	(15,031)	(19,764)	(29,949)
Other expenses	(25,187)	(15,965)	(24,957)
Construction costs from construction services for contracted concessional assets of the Company accounted for under IFRIC 12	(6,614)	0	0
Total	(336,622)	$ (351,248)	$ (414,330)
Gains on sale of equity interest	4,600
Kaxu [Member]
Other operating income [Abstract]
Insurance proceeds and other	$ 15,300

Financial expense, net (Details

Financial expense, net (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Financial income [Abstract]
Interest income on deposits and current accounts	$ 21,715	$ 7,740	$ 3,580
Interest income from loans and credits	2,942	1,299	2,066
Interest rates gains on derivatives: cash flow hedges	350	1,110	316
Total	25,007	10,149	5,962
Financial expense [Abstract]
Interest on loans and notes	(350,347)	(292,043)	(302,558)
Interest rates gains/(losses) on derivatives: cash flow hedges	26,598	(38,402)	(58,340)
Total	(323,749)	(330,445)	(360,898)
Other financial income/(expense), net [Abstract]
Other financial income	8,863	20,539	28,742
Other financial losses	(25,546)	(21,434)	(16,571)
Total	(16,683)	(895)	12,171
Kaxu [Member]
Other financial income/(expense), net [Abstract]
Income for non-monetary change to fair value of derivatives	100	6,200	7,600
Kaxu [Member] | Notes Conversion Option [Member]
Other financial income/(expense), net [Abstract]
Income for non-monetary change to fair value of derivatives	$ 3,900	$ 12,000	$ 9,200

Earnings per share (Details)

Earnings per share (Details) - USD ($) $ / shares in Units, $ in Thousands		12 Months Ended
		Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Earnings per share [Abstract]
Potential issuance of shares on settlement of Green Exchangeable Notes (in shares)		3,347,305	3,347,305	3,347,305
Potential issuance of shares to employees under long-term incentive plan (in shares)		217,418	226,032	327,749
Potential issuance of subscribed shares (in shares)			596,681	725,041
Profit/(loss) attributable to Atlantica		$ 43,380	$ (5,443)	$ (30,080)
Average number of ordinary shares outstanding - basic (in shares)		116,152,000	114,695,000	111,008,000
Average number of ordinary shares outstanding - diluted (in shares)		119,720,000	118,865,000	115,408,000
Earnings per share for the year - basic (in dollars per share)		$ 0.37	$ (0.05)	$ (0.27)
Earnings per share for the year - diluted (in dollars per share)	[1],[2]	$ 0.37	$ (0.09)	$ (0.28)
[1] Antidilutive effect applied, where applicable (see Note 24)

Other information (Details)

Other information (Details) - USD ($) $ / shares in Units, $ in Millions	Feb. 29, 2024	Dec. 31, 2023
Restricted Net Assets [Abstract]
Restricted net assets		$ 267
Subsequent Events [Member]
Subsequent Events [Abstract]
Dividend declaration date	Feb. 29, 2024
Dividend approved (in dollars per share)	$ 0.445
Dividend approved expected date to be paid	Mar. 22, 2024