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Nature of Business and Basis of Presentation - General (Details)
customer in Millions
 3 Months Ended
Mar. 31, 2025
MMBTU
counterparty
customer
GW
Business Acquisition [Line Items]  
Generation capacity (in GW) | GW 13
Generation capacity (MMBTU) annually | MMBTU 1,800
Residential Customers  
Business Acquisition [Line Items]  
Customers | customer 8
Residential Customers, Retail Energy  
Business Acquisition [Line Items]  
Customers 6,000,000
Residential Customers , Smart Home  
Business Acquisition [Line Items]  
Customers 2,000,000