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Nature of the business, Assets acquired (Details)
$ in Thousands
6 Months Ended 12 Months Ended
Dec. 14, 2021
USD ($)
MW
Nov. 25, 2021
USD ($)
MW
Aug. 06, 2021
USD ($)
Plant
MW
Jun. 16, 2021
MW
May 14, 2021
USD ($)
MW
Apr. 07, 2021
USD ($)
MW
Jan. 08, 2021
Jan. 07, 2021
Jun. 30, 2022
USD ($)
Asset
Plant
MW
Dec. 31, 2021
USD ($)
Sep. 30, 2021
Jul. 15, 2021
USD ($)
Jun. 15, 2021
USD ($)
Dec. 04, 2020
Nature of the business [Abstract]                            
Investment under the equity method                 $ 275,572 $ 294,581        
Interest rate                           2.50%
Number of assets under construction | Asset                 3          
Solana [Member]                            
Nature of the business [Abstract]                            
Ownership interest                 100.00%          
Italy Solar PV [Member]                            
Nature of the business [Abstract]                            
Investment under the equity method     $ 9,000                      
Gross capacity | MW     3.7                      
Number of solar plants acquired | Plant     2                      
Italy Solar PV 3 [Member]                            
Nature of the business [Abstract]                            
Investment under the equity method $ 4,000                          
Gross capacity | MW 2.5                          
Calgary District Heating Center [Member]                            
Nature of the business [Abstract]                            
Investment under the equity method         $ 22,900                  
Gross capacity | MW         55                  
Weighted average contract life                 20 years          
La Sierpe [Member]                            
Nature of the business [Abstract]                            
Investment under the equity method   $ 23,500                        
Gross capacity | MW   20                        
Rioglass [Member]                            
Nature of the business [Abstract]                            
Investment under the equity method                   $ 17,100        
Percentage of interest acquired             42.50%     85.00% 42.50%      
Ownership interest             57.50% 15.00%            
Rioglass [Member] | Solana [Member]                            
Nature of the business [Abstract]                            
Ownership interest                   100.00%        
Coso [Member]                            
Nature of the business [Abstract]                            
Investment under the equity method           $ 130,000                
Gross capacity | MW           135                
Period of PPA                 18 years          
Coso [Member] | Project Debt [Member]                            
Nature of the business [Abstract]                            
Investment under the equity method                       $ 40,000    
Vento II [Member]                            
Nature of the business [Abstract]                            
Investment under the equity method                         $ 180,700  
Percentage of interest acquired                         49.00%  
Gross capacity | MW       596                    
Ownership interest       51.00%                    
Period of PPA                 5 years          
Albisu [Member]                            
Nature of the business [Abstract]                            
Gross capacity | MW                 10          
Period of PPA                 15 years          
la Tolua and Tierra Linda [Member]                            
Nature of the business [Abstract]                            
Gross capacity | MW                 30          
Period of PPA                 15 years          
Number of solar plants acquired | Plant                 2