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Commitments and Contingencies - Settlement Agreement (Details)
 9 Months Ended
Dec. 20, 2021
USD ($)
item
Jul. 31, 2022
USD ($)
item
Jul. 31, 2022
KRW (₩)
item
Jun. 30, 2022
item
Jan. 31, 2022
item
Dec. 23, 2021
USD ($)
Oct. 31, 2021
USD ($)
Commitments And Contingencies [Line Items]              
Amount of contractual Obligation   $ 2,400,000         $ 2,200,000
POSCO Energy Settlement Agreement              
Commitments And Contingencies [Line Items]              
Contingent liability $ 1,800,000            
Period within which an application should be filed 5 days            
Warrant period against module defect from the date of shipment. 18 months            
Warrant period against module defect from the date of installation 12 months            
Period for reimbursement due to shortfall or defect 7 years            
Percentage of maximum annual reimbursement obligation 7.50%            
Number of firm, non-cancelable orders | item 12            
Number of weeks within which the orders to be placed | item 2            
Price per module of the orders to be placed $ 3,000,000.0            
Number of modules delivered | item       6 6    
Period of right of first refusal on operation and maintenance services 24 months            
Number of balance of plant units | item   8 8        
Purchase price per unit of balance of plant units   $ 2,116,500 ₩ 2,550,000,000        
Amount of contractual Obligation           $ 24,000,000.0  
Payments for contractual obligation   $ 24,000,000.0          
POSCO Energy Settlement Agreement | Settlement agreement orders on or before June 30, 2022              
Commitments And Contingencies [Line Items]              
Number of additional firm, non-cancelable orders to be placed | item 8            
Price per module of the orders to be placed $ 3,000,000.0            
POSCO Energy Settlement Agreement | Settlement agreement orders on or before December 31, 2022              
Commitments And Contingencies [Line Items]              
Number of additional firm, non-cancelable orders to be placed | item 14            
Price per module of the orders to be placed $ 3,000,000.0