The multiplier amount of annual carbon emission price.

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- Definition

Basis points in debt instrument.

+ References

No definition available.

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- Definition

Floor rate in a debt instrument.

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No definition available.

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- Definition

Percentage of prepayment fee on debt instrument.

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No definition available.

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- Definition

The amortization period of principal amount of debt.

+ References

No definition available.

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- Definition

Term of interest only period after the closing date in a debt instrument.

+ References

No definition available.

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- Definition

Term to acquire interest on Flip Point

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No definition available.

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- Definition

The trailing period for debt service coverage ratio.

+ References

No definition available.

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- Definition

Debt service coverage ratio.

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No definition available.

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- Definition

The amount of cash outflow for output shortfall payments.

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No definition available.

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- Definition

Payment to fund Debt Service Reserve Accounts.

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No definition available.

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- Definition

Payment to fund operations and maintenance and module replacement reserve accounts.

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No definition available.

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- Definition

Percentage of excess cashflow available to borrower.

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No definition available.

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- Definition

Percentage of loan provided by lender.

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No definition available.

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- Definition

The cash inflow from a debt before debt issuance costs.

+ References

No definition available.

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- Definition

Term following commercial operations date and termination of the Amended and Restated PPA.

+ References

No definition available.

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- Definition

The amount of unrestricted cash as at the end of the reporting period.

+ References

No definition available.

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
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- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
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- Definition

The cash outflow paid to third parties in connection with debt origination, which will be amortized over the remaining maturity period of the associated long-term debt.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
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- Definition

The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 10
-Name Accounting Standards Codification
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- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 830
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
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-URI https://asc.fasb.org//1943274/2147481674/830-30-50-2

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Subsequent events - Groton Back-Leverage Financing (Details) - USD ($)			9 Months Ended
	Aug. 18, 2023	May 19, 2023	Jul. 31, 2023	May 22, 2023
Subsequent Event [Line Items]
Payments of debt issuance costs			$ 2,917,000
Interest rate (as a percent)				3.716%
Trailing period for debt service coverage ratio		12 months
U.S. Treasury Note \| Subordinated Back Leverage Loan Facility
Subsequent Event [Line Items]
Debt instrument term	10 years
Basis points	275
Floor rate (as a percent)	5.00%
U.S. Treasury Note \| Subordinated Back Leverage Loan Facility \| Step Down Date
Subsequent Event [Line Items]
Interest rate (as a percent)	8.00%
U.S. Treasury Note \| Subordinated Back Leverage Loan Facility \| After the Step Down Date
Subsequent Event [Line Items]
Interest rate (as a percent)	8.00%
Subsequent Event \| Liberty Lender \| Senior Back Leverage Loan Facility
Subsequent Event [Line Items]
Interest rate (as a percent)	6.75%
Annual carbon emissions price multiplier	12.66
Subsequent Event \| Liberty Lender \| Senior Back Leverage Loan Facility \| Carbon Offset Event Continuing
Subsequent Event [Line Items]
Interest rate (as a percent)	7.32%
Subsequent Event \| Liberty Lender \| Senior Back Leverage Loan Facility \| Carbon Offset Event Non Continuing
Subsequent Event [Line Items]
Interest rate (as a percent)	6.07%
Subsequent Event \| Groton Back-Leverage Financing
Subsequent Event [Line Items]
Gross proceeds from debt	$ 20,000,000.0
Payments of debt issuance costs	400,000
Net proceeds from debt	19,600,000
Payment to fund DSCR Reserve Accounts	1,700,000
Payment to fund O&M Reserve Accounts	6,500,000
Output shortfall payments	1,300,000
Unrestricted cash	$ 3,000,000.0
Term to acquire interest at flip point	90 days
Subsequent Event \| Groton Back-Leverage Financing \| Subordinated Back Leverage Loan Facility
Subsequent Event [Line Items]
Excess cashflow available to borrower (as a percent)	50.00%
Term following commercial operations date and termination of the Amended and Restated PPA	20 years
Term of interest only period	84 months
Subsequent Event \| Groton Back-Leverage Financing \| Liberty Lender
Subsequent Event [Line Items]
Loan provided by lender (as a percentage)	50.00%
Payment to fund DSCR Reserve Accounts	$ 830,000
Payment to fund O&M Reserve Accounts	$ 3,250,000
Subsequent Event \| Groton Back-Leverage Financing \| Amalgamated Lender
Subsequent Event [Line Items]
Loan provided by lender (as a percentage)	50.00%
Payment to fund DSCR Reserve Accounts	$ 830,000
Payment to fund O&M Reserve Accounts	3,250,000
Subsequent Event \| Groton Back-Leverage Financing \| Back Leverage Lenders
Subsequent Event [Line Items]
Payment to fund DSCR Reserve Accounts	$ 11,100,000
Subsequent Event \| Groton Back-Leverage Financing \| Senior Back Leverage Lenders
Subsequent Event [Line Items]
Amortization period	10 years
Debt instrument term	7 years
Debt service coverage ratio	1.20%
Trailing period for debt service coverage ratio	12 months
Subsequent Event \| Groton Back-Leverage Financing \| Senior Back Leverage Lenders \| Prepayment on or prior to the second anniversary
Subsequent Event [Line Items]
Prepayment fee (as percentage)	3.00%
Subsequent Event \| Groton Back-Leverage Financing \| Senior Back Leverage Lenders \| Prepayment after second anniversary of the closing date but on or prior to the fourth anniversary
Subsequent Event [Line Items]
Prepayment fee (as percentage)	2.00%
Subsequent Event \| Groton Back-Leverage Financing \| Senior Back Leverage Lenders \| Prepayment after fourth anniversary of the closing date but on or prior to the seventh anniversary
Subsequent Event [Line Items]
Prepayment fee (as percentage)	1.00%
Subsequent Event \| Groton Back-Leverage Financing \| Senior Back Leverage Lenders \| Maximum
Subsequent Event [Line Items]
Term loan facility	$ 12,000,000.0
Subsequent Event \| Groton Back-Leverage Financing \| Subordinated Back Leverage Lenders
Subsequent Event [Line Items]
Payment to fund DSCR Reserve Accounts	$ 300,000
Debt service coverage ratio	1.10%
Trailing period for debt service coverage ratio	12 months
Subsequent Event \| Groton Back-Leverage Financing \| Subordinated Back Leverage Lenders \| Senior back and leverage back \| Maximum
Subsequent Event [Line Items]
Gross proceeds from debt	$ 8,000,000.0
Subsequent Event \| Connecticut Green Bank Loans
Subsequent Event [Line Items]
Unrestricted cash	$ 6,800,000