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Tax Equity Financings and Investment Tax Credit Sale (Details) |  |  |  |  |  |  |  |  |  | 1 Months Ended | 3 Months Ended | 12 Months Ended | 24 Months Ended |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Dec. 12, 2024 USD ($) | Dec. 31, 2023 USD ($) | Dec. 16, 2022 USD ($) MW | Dec. 15, 2022 MW | Oct. 04, 2022 MW | Sep. 06, 2022 USD ($) | Jul. 07, 2022 USD ($) | Dec. 13, 2021 USD ($) | Aug. 04, 2021 USD ($) | Nov. 30, 2021 USD ($) MW | Aug. 31, 2021 USD ($) MW | Jan. 31, 2024 MW | Oct. 31, 2023 USD ($) MW | Apr. 30, 2022 USD ($) | Oct. 31, 2024 USD ($) MW | Oct. 31, 2023 USD ($) Plant MW | Oct. 31, 2022 USD ($) | Oct. 31, 2023 USD ($) | Jan. 31, 2022 USD ($)
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of fuel cell power plants, tax equity financing transaction |  |  |  |  |  |  |  |  |  |  |  |  | 2 |  |  |  |  |  |
Net income (loss) attributable to noncontrolling interests |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ (30,769,000) | $ (488,000) | $ (4,510,000) |  |
Consideration payable to a customer |  |  |  |  |  |  |  |  |  |  |  |  | $ 3,958,000 |  | $ 2,515,000 | 3,958,000 |  | $ 3,958,000 |
Derby Project 14.0 Mega Watt |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capacity of plant | MW |  |  |  |  |  |  |  |  |  |  |  |  | 14 |  | 14 |  |  |  |
Derby Project 2.8 Mega Watt |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capacity of plant | MW |  |  |  |  |  |  |  |  |  |  |  |  | 2.8 |  | 2.8 |  |  |  |
Derby Project |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income (loss) attributable to noncontrolling interests |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ (28,300,000) |  |  |  |
Groton Project |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capacity of plant | MW |  |  | 6 | 7.4 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income (loss) attributable to noncontrolling interests |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3,500,000 | $ 2,500,000 | 0 |  |
Amount of distribution |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 100,000 |  |  | 0 |
Payment of amendment fee |  |  | $ 1,200,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capacity of plant due to Technical Improvement Plan | MW |  |  |  |  |  |  |  |  |  |  |  | 7.4 |  |  |  |  |  |  |
Contribution received under the Technical Improvement Plan |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 4,000,000 |  |  |  |
Percentage of cash and tax allocations to be received |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 95.00% |  |  |  |
Tax equity financing transactions with Franklin Park |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of fuel cell power plants, tax equity financing transaction | Plant |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2 |  |  |
Tax equity financing commitment |  |  |  |  |  |  |  |  |  |  |  |  | $ 30,200,000 |  |  | $ 30,200,000 |  | $ 30,200,000 |
Tax equity financing transaction, commitment amount received |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 21,100,000 | 9,100,000 |  |  |
Closing costs |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,800,000 |  |  |
Tax equity financing transactions with Franklin Park | Derby Project 14.0 Mega Watt |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capacity of plant | MW |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 14 |  |  |
Tax equity financing transactions with Franklin Park | Derby Project 2.8 Mega Watt |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capacity of plant | MW |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2.8 |  |  |
Tax equity financing transactions with Franklin Park | Derby Project |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amount of distribution |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,000,000 |  |  |  |
Percentage of cash and tax allocations to be received |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 95.00% |  |  |  |
East West Bank |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capacity of plant | MW |  |  |  |  |  |  |  |  |  |  | 7.4 |  |  |  |  |  |  |  |
Tax equity financing commitment |  |  |  |  |  |  | $ 12,000,000 |  |  |  | $ 15,000,000 |  |  |  |  |  |  |  |
Tax equity financing, Aggregate fee |  |  |  |  |  |  | 500,000 |  |  |  |  |  |  |  |  |  |  |  |
Closing costs |  |  |  |  |  |  |  |  | $ 800,000 |  |  |  |  |  |  |  |  |  |
Initial draw |  |  |  |  |  |  |  |  | 3,000,000 |  |  |  |  |  |  |  |  |  |
Remaining amount of draw |  |  |  |  |  |  |  |  | $ 12,000,000 |  |  |  |  |  |  |  |  |  |
East West Bank | Groton Project |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amount of distribution |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 0 | $ 0 |  |  |
Tax equity financing, Aggregate fee |  |  | $ 500,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
REI Partnership Flip Transaction |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capacity of plant | MW |  |  |  |  |  |  |  |  |  | 7.4 |  |  |  |  |  |  |  |  |
Net income (loss) attributable to noncontrolling interests |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 900,000 | 2,000,000 | (4,500,000) |  |
Tax equity financing commitment |  |  |  |  |  |  |  |  |  | $ 12,400,000 |  |  |  | $ 11,900,000 |  |  |  |  |
Closing costs |  |  |  |  |  |  |  | $ 400,000 |  |  |  |  |  |  |  |  |  |  |
Amount of Refund |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 500,000 |  |  |  |  |
Percentage of annual interest rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2.73% |  |  |  |
Initial draw |  |  |  |  |  |  |  | $ 3,200,000 |  |  |  |  |  |  |  |  |  |  |
Remaining amount of draw |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 9,200,000
Legal and advisory fees |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 400,000 |  |
Percentage of cash and tax allocations to be received |  |  |  |  |  |  |  |  |  | 95.00% |  |  |  |  |  |  |  |  |
Percentage of amount payable |  |  |  |  |  |  |  |  |  | 10.30% |  |  |  |  |  |  |  |  |
REI Partnership Flip Transaction | LIPA Yaphank Project |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amount of distribution |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 600,000 | $ 0 | $ 300,000 |  |
Toyota Investment Tax Credit Sale | REI |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Project's qualified ITCs |  | $ 8,400,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Purchase amount of ITCs |  | 7,100,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Eligible capital expenditure ITC rate per $1 purchased ITCs |  | 0.85 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Transaction costs |  | 400,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consideration payable to a customer |  | $ 6,300,000 |  |  |  |  |  |  |  |  |  |  |  |  | $ 6,000,000 |  |  |  |
Subsequent Event | Groton Project |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Tax equity financing transaction, commitment amount received | $ 4,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
First Anniversary of Project Achieving Commercial Operations | East West Bank |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Tax equity financing commitment, Contributions |  |  |  |  |  | $ 4,000,000 | $ 4,000,000 |  |  |  |  |  |  |  |  |  |  |  |
Second Anniversary of Project Achieving Commercial Operations | East West Bank |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Tax equity financing commitment, Contributions |  |  |  |  |  | 4,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Third Anniversary of Project Achieving Commercial Operations | East West Bank |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Tax equity financing commitment, Contributions |  |  |  |  |  | $ 4,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum | East West Bank | Groton Project |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capacity of plant | MW |  |  |  |  | 7.4 |  |  |  |  |  |  |  |  |  |  |  |  |  |

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