v3.22.0.1
Nature of the business, Concessional assets owned (Details)
$ in Thousands, € in Millions
 12 Months Ended
Dec. 31, 2021
USD ($)
Dec. 31, 2020
USD ($)
Jul. 14, 2020
USD ($)
Jul. 14, 2020
EUR (€)
Dec. 31, 2019
USD ($)
Nature of the business [Abstract]          
Ownership 49.00%        
Project debt $ 5,036,193 $ 5,237,614     $ 4,852,348
ACT [Member]          
Nature of the business [Abstract]          
Type Efficient natural gas & heat        
Ownership 100.00%        
Location Mexico        
Currency [1] USD        
Capacity (gross) 300 MW        
Counterparty credit ratings [2] BBB/ Ba3/BB-        
COD [3] 2013        
Contract years remaining [4] 11 years        
Monterrey [Member]          
Nature of the business [Abstract]          
Type Efficient natural gas &heat        
Ownership 30.00%        
Location Mexico        
Currency [1] USD        
Capacity (gross) 142 MW        
Counterparty credit ratings [2] Not rated        
COD [3] 2018        
Contract years remaining [4] 17 years        
ATN [Member]          
Nature of the business [Abstract]          
Type [5] Transmission line        
Ownership [5] 100.00%        
Location [5] Peru        
Currency [1],[5] USD        
Capacity (gross) [5] 379 miles        
Counterparty credit ratings [2],[5] BBB+/Baa1/BBB        
COD [3],[5] 2011        
Contract years remaining [4],[5] 19 years        
ATS [Member]          
Nature of the business [Abstract]          
Type Transmission line        
Ownership 100.00%        
Location Peru        
Currency [1] USD        
Capacity (gross) 569 miles        
Counterparty credit ratings [2] BBB+/Baa1/BBB        
COD [3] 2014        
Contract years remaining [4] 22 years        
ATN 2 [Member]          
Nature of the business [Abstract]          
Type Transmission line        
Ownership 100.00%        
Location Peru        
Currency [1] USD        
Capacity (gross) 81 miles        
Counterparty credit ratings [2] Not rated        
COD [3] 2015        
Contract years remaining [4] 11 years        
Quadra 1 & 2 [Member]          
Nature of the business [Abstract]          
Type Transmission line        
Ownership 100.00%        
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] 13 years        
Quadra 2 [Member]          
Nature of the business [Abstract]          
Contract years remaining [4] 13 years        
Palmucho [Member]          
Nature of the business [Abstract]          
Type Transmission line        
Ownership 100.00%        
Location Chile        
Currency [1] USD        
Capacity (gross) 6 miles        
Counterparty credit ratings [2] BBB/ -- /A-        
COD [3] 2007        
Contract years remaining [4] 16 years        
Chile TL3 [Member]          
Nature of the business [Abstract]          
Type Transmission line        
Ownership 100.00%        
Location Chile        
Currency [1] USD        
Capacity (gross) 50 miles        
Counterparty credit ratings [2] A/A1/A-        
COD [3] 1993        
Skikda [Member]          
Nature of the business [Abstract]          
Type Water        
Ownership [6] 34.20%        
Location Algeria        
Currency [1] USD        
Capacity (gross) 3.5 M ft3/day        
Counterparty credit ratings [2] Not rated        
COD [3] 2009        
Contract years remaining [4] 12 years        
Skikda [Member] | Algerian Energy Company, SPA [Member]          
Nature of the business [Abstract]          
Percentage of non-controlling interests 49.00%        
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 [7] 25.50%        
Location Algeria        
Currency [1] USD        
Capacity (gross) 7 M ft3/day        
Counterparty credit ratings [2] Not rated        
COD [3] 2012        
Contract years remaining [4] 16 years        
Honaine [Member] | Algerian Energy Company, SPA [Member]          
Nature of the business [Abstract]          
Percentage of non-controlling interests 49.00%        
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 [8] 51.00%        
Location Algeria        
Currency [1] USD        
Capacity (gross) 7 M ft3/day        
Counterparty credit ratings [2] Not rated        
COD [3] 2015        
Contract years remaining [4] 18 years        
Tenes [Member] | Algerian Energy Company, SPA [Member]          
Nature of the business [Abstract]          
Percentage of non-controlling interests 49.00%        
PS10 & PS20 [Member]          
Nature of the business [Abstract]          
Type Renewable (Solar)        
Ownership 100.00%        
Location Spain        
Currency [1] Euro        
Capacity (gross) 31 MW        
Counterparty credit ratings [2] A/Baa1/A-        
COD [3] 2007&2009        
PS10 [Member]          
Nature of the business [Abstract]          
Contract years remaining [4] 10 years        
PS20 [Member]          
Nature of the business [Abstract]          
Contract years remaining [4] 12 years        
Solana [Member]          
Nature of the business [Abstract]          
Type Renewable (Solar)        
Ownership 100.00%        
Location Arizona (USA)        
Currency [1] USD        
Capacity (gross) 280 MW        
Counterparty credit ratings [2] BBB+/A3/BBB+        
COD [3] 2013        
Contract years remaining [4] 22 years        
Mojave [Member]          
Nature of the business [Abstract]          
Type Renewable (Solar)        
Ownership 100.00%        
Location California (USA)        
Currency [1] USD        
Capacity (gross) 280 MW        
Counterparty credit ratings [2] BB-/ -- /BB        
COD [3] 2014        
Contract years remaining [4] 18 years        
Coso [Member]          
Nature of the business [Abstract]          
Type Renewable (Geothermal)        
Ownership 100.00%        
Location California (USA)        
Currency [1] USD        
Capacity (gross) 135 MW        
Counterparty credit ratings [2],[9] Investment Grade        
COD [3] 1987-1989        
Contract years remaining [4] 17 years        
Elkhorn Valley [Member]          
Nature of the business [Abstract]          
Type Renewable (Wind)        
Ownership 49.00%        
Location Oregon (USA)        
Currency [1] USD        
Capacity (gross) 101 MW        
Counterparty credit ratings [2] BBB/A3/--        
COD [3] 2007        
Contract years remaining [4] 6 years        
Prairie Star [Member]          
Nature of the business [Abstract]          
Type Renewable (Wind)        
Ownership 49.00%        
Location Minnesota (USA)        
Currency [1] USD        
Capacity (gross) 101 MW        
Counterparty credit ratings [2] --/A3/A-        
COD [3] 2007        
Contract years remaining [4] 6 years        
Twin Groves II [Member]          
Nature of the business [Abstract]          
Type Renewable (Wind)        
Ownership 49.00%        
Location Illinois (USA)        
Currency [1] USD        
Capacity (gross) 198 MW        
Counterparty credit ratings [2] BBB-/Baa2/--        
COD [3] 2008        
Contract years remaining [4] 4 years        
Lone Star II [Member]          
Nature of the business [Abstract]          
Type Renewable (Wind)        
Ownership 49.00%        
Location Texas (USA)        
Currency [1] USD        
Capacity (gross) 196 MW        
Counterparty credit ratings [2] Not rated        
COD [3] 2008        
Contract years remaining [4] 1 year        
Chile PV I [Member]          
Nature of the business [Abstract]          
Type Renewable (Solar)        
Ownership [10] 35.00%        
Location Chile        
Currency [1] USD        
Capacity (gross) 55 MW        
Counterparty credit ratings [2] N/A        
COD [3] 2016        
Percentage of non-controlling interests 65.00%        
Chile PV2 [Member]          
Nature of the business [Abstract]          
Type Renewable (Solar)        
Ownership [10] 35.00%        
Location Chile        
Currency [1] USD        
Capacity (gross) 40 MW        
Counterparty credit ratings [2] Not rated        
COD [3] 2017        
Contract years remaining [4] 9 years        
Percentage of non-controlling interests 65.00%        
La Sierpe [Member]          
Nature of the business [Abstract]          
Type Renewable (Solar)        
Ownership 100.00%        
Location Colombia        
Currency [1] COP        
Capacity (gross) 20 MW        
Counterparty credit ratings [2] Not rated        
COD [3] 2021        
Contract years remaining [4] 14 years        
Palmatir [Member]          
Nature of the business [Abstract]          
Type Renewable (Wind)        
Ownership 100.00%        
Location Uruguay        
Currency [1] USD        
Capacity (gross) 50 MW        
Counterparty credit ratings [2],[11] BBB/Baa2/BBB-        
COD [3] 2014        
Contract years remaining [4] 12 years        
Cadonal [Member]          
Nature of the business [Abstract]          
Type Renewable (Wind)        
Ownership 100.00%        
Location Uruguay        
Currency [1] USD        
Capacity (gross) 50 MW        
Counterparty credit ratings [2],[11] BBB/Baa2/BBB-        
COD [3] 2014        
Contract years remaining [4] 13 years        
Melowind [Member]          
Nature of the business [Abstract]          
Type Renewable (Wind)        
Ownership 100.00%        
Location Uruguay        
Currency [1] USD        
Capacity (gross) 50 MW        
Counterparty credit ratings [2] BBB/Baa2/BBB-        
COD [3] 2015        
Contract years remaining [4] 14 years        
Mini-Hydro [Member]          
Nature of the business [Abstract]          
Type Renewable (Hydraulic)        
Ownership 100.00%        
Location Peru        
Currency [1] USD        
Capacity (gross) 4 MW        
Counterparty credit ratings [2] BBB+/Baa1/BBB        
COD [3] 2012        
Contract years remaining [4] 11 years        
Solaben 2 & 3 [Member]          
Nature of the business [Abstract]          
Type Renewable (Solar)        
Ownership [12] 70.00%        
Location Spain        
Currency [1] Euro        
Capacity (gross) 2x50 MW        
Counterparty credit ratings [2] A/Baa1/A-        
COD [3] 2012        
Solaben 2 & 3 [Member] | Itochu Corporation [Member]          
Nature of the business [Abstract]          
Percentage of non-controlling interests 30.00%        
Solaben 2 [Member]          
Nature of the business [Abstract]          
Contract years remaining [4] 16 years        
Solaben 3 [Member]          
Nature of the business [Abstract]          
Contract years remaining [4] 16 years        
Solacor 1 & 2 [Member]          
Nature of the business [Abstract]          
Type Renewable (Solar)        
Ownership [13] 87.00%        
Location Spain        
Currency [1] Euro        
Capacity (gross) 2x50 MW        
Counterparty credit ratings [2] A/Baa1/A-        
COD [3] 2012        
Solacor 1 & 2 [Member] | JGC [Member]          
Nature of the business [Abstract]          
Percentage of non-controlling interests 13.00%        
Solacor 1 [Member]          
Nature of the business [Abstract]          
Contract years remaining [4] 15 years        
Solacor 2 [Member]          
Nature of the business [Abstract]          
Contract years remaining [4] 15 years        
Helioenergy 1 & 2 [Member]          
Nature of the business [Abstract]          
Type Renewable (Solar)        
Ownership 100.00%        
Location Spain        
Currency [1] Euro        
Capacity (gross) 2x50 MW        
Counterparty credit ratings [2] A/Baa1/A-        
COD [3] 2011        
Helioenergy 1 [Member]          
Nature of the business [Abstract]          
Contract years remaining [4] 15 years        
Helioenergy 2 [Member]          
Nature of the business [Abstract]          
Contract years remaining [4] 15 years        
Helios 1 & 2 [Member]          
Nature of the business [Abstract]          
Type Renewable (Solar)        
Ownership 100.00%        
Location Spain        
Currency [1] Euro        
Capacity (gross) 2x50 MW        
Counterparty credit ratings [2] A/Baa1/A-        
COD [3] 2012        
Project debt     $ 371,000 € 326  
Helios 1 [Member]          
Nature of the business [Abstract]          
Contract years remaining [4] 15 years        
Helios 2 [Member]          
Nature of the business [Abstract]          
Contract years remaining [4] 16 years        
Solnova 1, 3 & 4 [Member]          
Nature of the business [Abstract]          
Type Renewable (Solar)        
Ownership 100.00%        
Location Spain        
Currency [1] Euro        
Capacity (gross) 3x50 MW        
Counterparty credit ratings [2] A/Baa1/A-        
COD [3] 2010        
Solnova 1 [Member]          
Nature of the business [Abstract]          
Contract years remaining [4] 13 years        
Solnova 3 [Member]          
Nature of the business [Abstract]          
Contract years remaining [4] 13 years        
Solnova 4 [Member]          
Nature of the business [Abstract]          
Contract years remaining [4] 14 years        
Solaben 1 & 6 [Member]          
Nature of the business [Abstract]          
Type Renewable (Solar)        
Ownership 100.00%        
Location Spain        
Currency [1] Euro        
Capacity (gross) 2x50 MW        
Counterparty credit ratings [2] A/Baa1/A-        
COD [3] 2013        
Solaben 1 [Member]          
Nature of the business [Abstract]          
Contract years remaining [4] 17 years        
Solaben 6 [Member]          
Nature of the business [Abstract]          
Contract years remaining [4] 17 years        
Seville PV [Member]          
Nature of the business [Abstract]          
Type Renewable (Solar)        
Ownership [14] 80.00%        
Location Spain        
Currency [1] Euro        
Capacity (gross) 1 MW        
Counterparty credit ratings [2] A/Baa1/A-        
COD [3] 2006        
Contract years remaining [4] 14 years        
Seville PV [Member] | Idae [Member]          
Nature of the business [Abstract]          
Percentage of non-controlling interests 20.00%        
Italy PV 1 [Member]          
Nature of the business [Abstract]          
Type Renewable (Solar)        
Ownership 100.00%        
Location Italy        
Currency [1] Euro        
Capacity (gross) 1.6 MW        
Counterparty credit ratings [2] BBB/Baa3/BBB        
COD [3] 2010        
Contract years remaining [4] 9 years        
Italy PV 2 [Member]          
Nature of the business [Abstract]          
Type Renewable (Solar)        
Ownership 100.00%        
Location Italy        
Currency [1] Euro        
Capacity (gross) 2.1 MW        
Counterparty credit ratings [2] BBB/Baa3/BBB        
COD [3] 2011        
Contract years remaining [4] 9 years        
Italy PV 3 [Member]          
Nature of the business [Abstract]          
Type Renewable (Solar)        
Ownership 100.00%        
Location Italy        
Currency [1] Euro        
Capacity (gross) 2.5 MW        
Counterparty credit ratings [2] BBB/Baa3/BBB        
COD [3] 2012        
Contract years remaining [4] 10 years        
Kaxu [Member]          
Nature of the business [Abstract]          
Type Renewable (Solar)        
Ownership [15] 51.00%        
Location South Africa        
Currency [1] Rand        
Capacity (gross) 100 MW        
Counterparty credit ratings [2],[16] BB-/Ba2/BB-        
COD [3] 2015        
Contract years remaining [4] 13 years        
Project debt $ 315,000        
Kaxu [Member] | IDC [Member]          
Nature of the business [Abstract]          
Percentage of non-controlling interests 29.00%        
Kaxu [Member] | Kaxu Community Trust [Member]          
Nature of the business [Abstract]          
Percentage of non-controlling interests 20.00%        
Calgary [Member]          
Nature of the business [Abstract]          
Type Efficient natural gas &heat        
Ownership 100.00%        
Location Canada        
Currency [1] CAD        
Capacity (gross) 55 MWt        
Counterparty credit ratings [2],[17] ~41% A+ or higher        
COD [3] 2010        
Contract years remaining [4] 19 years        
[1] Certain contracts denominated in U.S. dollars are payable in local currency.
[2] Reflects the counterparty’s credit ratings issued by Standard & Poor’s Ratings Services, or S&P, Moody’s Investors Service Inc., or Moody’s, and Fitch Ratings Ltd, or Fitch.
[3] Commercial Operation Date.
[4] As of December 31, 2021.
[5] Including ATN Expansion 1 & 2.
[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.
[9] 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.
[10] 65% of the shares in Chile PV 1 and Chile PV 2 are indirectly held by financial partners through the renewable energy platform of the Company in Chile.
[11] Refers to the credit rating of Uruguay, as UTE (Administración Nacional de Usinas y Transmisoras Eléctricas) is unrated.
[12] Itochu Corporation holds 30% of the shares in each of Solaben 2 and Solaben 3.
[13] JGC holds 13% of the shares in each of Solacor 1 and Solacor 2.
[14] Instituto para la Diversificación y Ahorro de la Energía (“Idae”) holds 20% of the shares in Seville PV.
[15] Kaxu is owned by the Company (51%), Industrial Development Corporation of South Africa (29%) and Kaxu Community Trust (20%).
[16] 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.
[17] Refers to the credit rating of a diversified mix of 22 high credit quality clients (~41% A+ rating or higher, the rest is unrated).