v3.20.4
Nature of the business, Concessional assets owned (Details)
$ in Thousands, € in Millions
 12 Months Ended
Dec. 31, 2020
USD ($)
Jul. 14, 2020
EUR (€)
Dec. 31, 2019
USD ($)
Dec. 31, 2018
USD ($)
Nature of the business [Abstract]        
Project debt $ 5,237,614   $ 4,852,348 $ 5,091,114
ACT [Member]        
Nature of the business [Abstract]        
Type Efficient natural gas      
Ownership 100.00%      
Location Mexico      
Currency [1] USD      
Capacity (gross) 300 MW      
Counterparty credit ratings [2] BBB/ Ba2/BB-      
COD 2013      
Contract years left [3] 12 years      
Monterrey [Member]        
Nature of the business [Abstract]        
Type Efficient natural gas      
Ownership 30.00%      
Location Mexico      
Currency [1] USD      
Capacity (gross) 142 MW      
Counterparty credit ratings [2] Not rated      
COD 2018      
Contract years left [3] 18 years      
ATN [Member]        
Nature of the business [Abstract]        
Type [4] Transmission line      
Ownership [4] 100.00%      
Location [4] Peru      
Currency [1],[4] USD      
Capacity (gross) [4] 379 miles      
Counterparty credit ratings [2],[4] BBB+/A3/BBB+      
COD [4] 2011      
Contract years left [3],[4] 20 years      
ATS [Member]        
Nature of the business [Abstract]        
Type Transmission line      
Ownership 100.00%      
Location Peru      
Currency [1] USD      
Capacity (gross) 569 miles      
Counterparty credit ratings [2] BBB+/A3/BBB+      
COD 2014      
Contract years left [3] 23 years      
ATN2 [Member]        
Nature of the business [Abstract]        
Type Transmission line      
Ownership 100.00%      
Location Peru      
Currency [1] USD      
Capacity (gross) 81 miles      
Counterparty credit ratings [2] Not rated      
COD 2015      
Contract years left [3] 12 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 2014      
Quadra 1 [Member]        
Nature of the business [Abstract]        
Contract years left [3] 14 years      
Quadra 2 [Member]        
Nature of the business [Abstract]        
Contract years left [3] 14 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+/Baa1/A-      
COD 2007      
Contract years left [3] 17 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 1993      
Skikda [Member]        
Nature of the business [Abstract]        
Type Water      
Ownership [5] 34.20%      
Location Algeria      
Currency [1] USD      
Capacity (gross) 3.5 M ft3/day      
Counterparty credit ratings [2] Not rated      
COD 2009      
Contract years left [3] 13 years      
Skikda [Member] | Algerian Energy Company, SPA [Member]        
Nature of the business [Abstract]        
Percentage of non-controlling interests 49.00%      
Skikda [Member] | Sadyt [Member]        
Nature of the business [Abstract]        
Percentage of non-controlling interests 16.83%      
Honaine [Member]        
Nature of the business [Abstract]        
Type Water      
Ownership [6] 25.50%      
Location Algeria      
Currency [1] USD      
Capacity (gross) 7 M ft3/day      
Counterparty credit ratings [2] Not rated      
COD 2012      
Contract years left [3] 17 years      
Honaine [Member] | Algerian Energy Company, SPA [Member]        
Nature of the business [Abstract]        
Percentage of non-controlling interests 49.00%      
Honaine [Member] | Sadyt [Member]        
Nature of the business [Abstract]        
Percentage of non-controlling interests 25.50%      
Tenes [Member]        
Nature of the business [Abstract]        
Type Water      
Ownership [7] 51.00%      
Location Algeria      
Currency [1] USD      
Capacity (gross) 7 M ft3/day      
Counterparty credit ratings [2] Not rated      
COD 2015      
Contract years left [3] 19 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 2007 & 2009      
PS10 [Member]        
Nature of the business [Abstract]        
Contract years left [3] 11 years      
PS20 [Member]        
Nature of the business [Abstract]        
Contract years left [3] 13 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] A-/A2/A-      
COD 2013      
Contract years left [3] 23 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-/WR/BB      
COD 2014      
Contract years left [3] 19 years      
Solaben 2 & 3 [Member]        
Nature of the business [Abstract]        
Type Renewable (Solar)      
Ownership [8] 70.00%      
Location Spain      
Currency [1] Euro      
Capacity (gross) 2x50 MW      
Counterparty credit ratings [2] A/Baa1/A-      
COD 2012      
Solaben 2 & 3 [Member] | Itochu Corporation [Member]        
Nature of the business [Abstract]        
Percentage of non-controlling interests 30.00%      
Solaben 2 [Member]        
Nature of the business [Abstract]        
Contract years left [3] 17 years      
Solaben 3 [Member]        
Nature of the business [Abstract]        
Contract years left [3] 16 years      
Solacor 1 & 2 [Member]        
Nature of the business [Abstract]        
Type Renewable (Solar)      
Ownership [9] 87.00%      
Location Spain      
Currency [1] Euro      
Capacity (gross) 2x50 MW      
Counterparty credit ratings [2] A/Baa1/A-      
COD 2012      
Solacor 1 & 2 [Member] | JGC [Member]        
Nature of the business [Abstract]        
Percentage of non-controlling interests 13.00%      
Solacor 1 [Member]        
Nature of the business [Abstract]        
Contract years left [3] 16 years      
Solacor 2 [Member]        
Nature of the business [Abstract]        
Contract years left [3] 16 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 2011      
Helioenergy 1 [Member]        
Nature of the business [Abstract]        
Contract years left [3] 16 years      
Helioenergy 2 [Member]        
Nature of the business [Abstract]        
Contract years left [3] 16 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 2012      
Project debt | €   € 326    
Helios 1 [Member]        
Nature of the business [Abstract]        
Contract years left [3] 16 years      
Helios 2 [Member]        
Nature of the business [Abstract]        
Contract years left [3] 17 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 2010      
Solnova 1 [Member]        
Nature of the business [Abstract]        
Contract years left [3] 14 years      
Solnova 3 [Member]        
Nature of the business [Abstract]        
Contract years left [3] 14 years      
Solnova 4 [Member]        
Nature of the business [Abstract]        
Contract years left [3] 15 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 2013      
Solaben 1 [Member]        
Nature of the business [Abstract]        
Contract years left [3] 18 years      
Solaben 6 [Member]        
Nature of the business [Abstract]        
Contract years left [3] 18 years      
Seville PV [Member]        
Nature of the business [Abstract]        
Type Renewable (Solar)      
Ownership [10] 80.00%      
Location Spain      
Currency [1] Euro      
Capacity (gross) 1 MW      
Counterparty credit ratings [2] A/Baa1/A-      
COD 2006      
Contract years left [3] 15 years      
Seville PV [Member] | Idae [Member]        
Nature of the business [Abstract]        
Percentage of non-controlling interests 20.00%      
Kaxu [Member]        
Nature of the business [Abstract]        
Type Renewable (Solar)      
Ownership [11] 51.00%      
Location South Africa      
Currency [1] Rand      
Capacity (gross) 100 MW      
Counterparty credit ratings [2],[12] BB-/Ba2/BB-      
COD 2015      
Contract years left [3] 14 years      
Project debt $ 355,000      
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%      
Palmatir [Member]        
Nature of the business [Abstract]        
Type Renewable (Wind)      
Ownership 100.00%      
Location Uruguay      
Currency [1] USD      
Capacity (gross) 50 MW      
Counterparty credit ratings [2],[13] BBB/Baa2/BBB-      
COD 2014      
Contract years left [3] 13 years      
Cadonal [Member]        
Nature of the business [Abstract]        
Type Renewable (Wind)      
Ownership 100.00%      
Location Uruguay      
Currency [1] USD      
Capacity (gross) 50 MW      
Counterparty credit ratings [2],[13] BBB/Baa2/BBB-      
COD 2014      
Contract years left [3] 14 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 2015      
Contract years left [3] 15 years      
Mini-Hydro [Member]        
Nature of the business [Abstract]        
Type Renewable (Hydraulic)      
Ownership 100.00%      
Location Peru      
Currency [1] USD      
Capacity (gross) 4 MW      
Counterparty credit ratings [2] BBB+/A3/ BBB+      
COD 2012      
Contract years left [3] 12 years      
Chile PV I [Member]        
Nature of the business [Abstract]        
Type Renewable (Solar)      
Ownership [14] 35.00%      
Location Chile      
Currency [1] USD      
Capacity (gross) 55 MW      
Counterparty credit ratings [2] N/A      
COD 2016      
Percentage of non-controlling interests 65.00%      
[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] As of December 31, 2020.
[4] Including the acquisition of ATN Expansion 1 & 2.
[5] Algerian Energy Company, SPA owns 49% of Skikda and Sacyr Agua, S.L. owns the remaining 16.83%.
[6] Algerian Energy Company, SPA owns 49% of Honaine and Sacyr Agua, S.L. owns the remaining 25.5%.
[7] Algerian Energy Company, SPA owns 49% of Tenes.
[8] Itochu Corporation, a Japanese trading company, holds 30% of the shares in each of Solaben 2 and Solaben 3.
[9] JGC, a Japanese engineering company, holds 13% of the shares in each of Solacor 1 and Solacor 2.
[10] Instituto para la Diversificacion y Ahorro de la Energia ("Idae"), a Spanish state-owned company, holds 20% of the shares in Seville PV.
[11] Kaxu is owned by the Company (51%), Industrial Development Corporation of South Africa (29%) and Kaxu Community Trust (20%).
[12] Refers to the credit rating of the Republic of South Africa. The offtaker is Eskom, which is a state-owned utility company in South Africa.
[13] Refers to the credit rating of Uruguay, as UTE (Administracion Nacional de Usinas y Transmisoras Electricas) is unrated.
[14] 65% of the shares in Chile PV I is indirectly held by financial partners through the renewable energy platform of the Company in Chile.