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Commitments and Contingencies (Details)
 6 Months Ended 12 Months Ended
Sep. 19, 2022
plaintiff
Jun. 30, 2023
USD ($)
$ / MWh
MW
Dec. 31, 2022
USD ($)
megawatts-hour
Loss Contingencies [Line Items]      
Number of plaintiffs | plaintiff 13    
Long-term contract work in process   $ 23,900,000 $ 0
Collaborative arrangements, maximum cost to the company   15,293,000  
Letters of credit   $ 59,000,000  
Number of megawatts (mw) | MW   77  
Utah Associated Municipal Power Systems      
Loss Contingencies [Line Items]      
Net development costs   $ 36,970,000  
Development Cost Reimbursement Agreement      
Loss Contingencies [Line Items]      
Collaborative arrangements, maximum cost to the company   11,193,000  
Collaborative arrangements, restricted cash, letter of credit, deposit in demand amount   $ 60,192,000  
Collaborative arrangements, comparing target price(in usd per share)   89.00 58.00
Number of megawatts (mw) | MW   370  
Long Lead Material Contract      
Loss Contingencies [Line Items]      
Long-term contract work in process   $ 25,777,000  
Carbon Free Power Project Award      
Loss Contingencies [Line Items]      
Collaborative arrangements, maximum cost to the company   4,100,000  
UAMPS | Development Cost Reimbursement Agreement      
Loss Contingencies [Line Items]      
Maximum reimbursement based on the current stage of project development   $ 83,500,000