Ameresco, Inc. Annual report [Section 13 and 15(d), not S-K Item 405]

Annual report [Section 13 and 15(d), not S-K Item 405]

Cover
- Cover Page
- Audit Information
Financial Statements
Notes to Financial Statements
Accounting Policies
- Summary of Significant Accounting Policies (Policies)
Notes Tables
Notes Details

Debt and Financing Lease Liabilities - Energy Project Asset Acquisition (Details)

v3.25.0.1

Debt and Financing Lease Liabilities - Energy Project Asset Acquisition (Details) $ in Thousands			1 Months Ended	12 Months Ended
	Aug. 02, 2024 installment	Feb. 26, 2024 USD ($)	Jan. 31, 2024 USD ($)	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Jan. 12, 2024 USD ($)	Sep. 28, 2023	Aug. 31, 2023	Aug. 04, 2023 USD ($)	May 31, 2023	Mar. 30, 2023
Debt Instrument [Line Items]
Payment on seller's promissory note				$ 61,941	$ 0	$ 0
Sellers Promissory Rate Due in January 2024 \| Unsecured Debt
Debt Instrument [Line Items]
Stated interest rate (percent)				5.00%
Bright Canyon Corporation
Debt Instrument [Line Items]
Stated interest rate (percent)							5.00%
Payable to seller				$ 5,696			$ 32,500			$ 46,694
Asset acquisition, debt assumed		$ 36,270
Payment on seller's promissory note			$ 29,441	$ 32,500	$ 18,400
Basis spread on variable rate	9.00%
Debt instrument, number of installments \| installment	4
Bright Canyon Corporation \| Secured Debt \| Secured Overnight Financing Rate (SOFR), 4 Year Term
Debt Instrument [Line Items]
Basis spread on variable rate		1.635%
Bright Canyon Corporation \| Secured Debt \| Secured Overnight Financing Rate (SOFR), 2 Year Term
Debt Instrument [Line Items]
Basis spread on variable rate		1.76%
Revolving Credit Facility \| Line of Credit
Debt Instrument [Line Items]
Stated interest rate (percent)				7.99%
Revolving Credit Facility \| August 2023 Construction Revolver Loans Payable Due In February 2024 \| Line of Credit
Debt Instrument [Line Items]
Debt interest rate (percent)									6.85%
Revolving Credit Facility \| Fixed Rate Note, Due August, 2039 \| Line of Credit
Debt Instrument [Line Items]
Stated interest rate (percent)								6.70%			6.38%	6.50%
Revolving Credit Facility \| Variable Rate Due In April 2030 \| Line of Credit
Debt Instrument [Line Items]
Debt interest rate (percent)				6.33%

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