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Nature of the business, Assets under construction or ready to start construction (Details)
$ in Thousands
1 Months Ended 3 Months Ended
Apr. 30, 2024
h
Oct. 31, 2023
h
Agreement
Jul. 31, 2023
Substation
Nov. 30, 2022
USD ($)
Jul. 31, 2022
mi
May 31, 2022
USD ($)
Asset
Mar. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
Assets under construction or ready to start construction [Abstract]                
Investments accounted for using equity method             $ 225,732 $ 230,307
Chile PV 1 and PV2 events of default [Abstract]                
Short-term project debt             $ 424,457 387,387
Coso Batteries 1 and Coso Batteries 2 [Member]                
Assets under construction or ready to start construction [Abstract]                
Number of tooling agreements | Agreement   2            
Period of PPA             15 years  
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) [1]             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 [2]             $ 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 [2]             $ 45,000  
Chile PMGD [Member]                
Assets under construction or ready to start construction [Abstract]                
Type             Solar PV  
Location             Chile  
Capacity (gross)       80 MW     80 MW [1]  
Expected COD             2024-2025  
Investments accounted for using equity method       $ 30,000     $ 30,000 [2]  
Off-taker             Regulated  
Percentage of interest acquired       49.00%        
Percentage of economic rights       70.00%        
Chile PMGD [Member] | Bottom of Range [Member]                
Assets under construction or ready to start construction [Abstract]                
Expected COD             2024  
Chile PMGD [Member] | Top of Range [Member]                
Assets under construction or ready to start construction [Abstract]                
Capacity (gross)             9MW  
Expected COD             2025  
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    
Percentage of interest acquired           50.00%    
Period of PPA             7 years  
Number of PV assets | Asset           2    
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             50.00%  
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  
Off-taker [3]             0  
Percentage of interest acquired             50.00%  
Chile PV 1 and PV 2 [Member]                
Assets under construction or ready to start construction [Abstract]                
Percentage of interest acquired             35.00%  
Chile PV 1 and PV2 events of default [Abstract]                
Short-term project debt             $ 71,000 $ 71,000
Chile PV 3 expansion [Member]                
Assets under construction or ready to start construction [Abstract]                
Type             Battery storage  
Location             Chile  
Capacity (gross) [1]             142 MWh  
Expected COD             2024  
Off-taker             Emoac  
Chile PV 3 expansion [Member] | Subsequent Events [Member]                
Assets under construction or ready to start construction [Abstract]                
Capacity (gross) 142 MWh              
Period of PPA 10 years              
Duration capacity of battery | h 2              
Chile PV 3 expansion [Member] | Bottom of Range [Member]                
Assets under construction or ready to start construction [Abstract]                
Investments accounted for using equity method [2]             $ 14,000  
Chile PV 3 expansion [Member] | Top of Range [Member]                
Assets under construction or ready to start construction [Abstract]                
Investments accounted for using equity method [2]             $ 15,000  
[1] Includes nominal capacity on a 100% basis, not considering Atlantica’s ownership.
[2] Corresponds to the expected investment by Atlantica.
[3] Atlantica owns 50% of the shares in Honda 2 and Apulo 1.