Ameresco, Inc. Quarterly report [Sections 13 or 15(d)]

Quarterly report [Sections 13 or 15(d)]

Cover
- Cover Page
Financial Statements
Notes to Financial Statements
Accounting Policies
- SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)
Notes Tables
Notes Details

COMMITMENTS AND CONTINGENCIES (Details)

v3.25.2

COMMITMENTS AND CONTINGENCIES (Details) $ in Thousands		1 Months Ended	6 Months Ended
COMMITMENTS AND CONTINGENCIES (Details) $ in Thousands	Sep. 05, 2024 USD ($)	Dec. 31, 2021 USD ($)	Jun. 30, 2025 USD ($)	Jun. 30, 2024 USD ($)	Jun. 10, 2025 USD ($)	Dec. 31, 2024 USD ($)	Aug. 30, 2024 project	Oct. 31, 2021 USD ($) project
Loss Contingencies [Line Items]
Number of battery energy storage system projects \| project							3	3
Maximum amount of liquidated damages								$ 89,000
Number of battery energy storage system projects, agreement reached \| project							2
Milestone payment received	$ 110,000
Increase in contingent consideration			$ 71	$ 0
Powin, LLC
Loss Contingencies [Line Items]
Deposits paid			26,683
Minimum \| Loss of Deposits From Powin Bankruptcy
Loss Contingencies [Line Items]
Maximum amount of liquidated damages					$ 0
Maximum \| Loss of Deposits From Powin Bankruptcy
Loss Contingencies [Line Items]
Maximum amount of liquidated damages					$ 26,683
Plug Smart
Loss Contingencies [Line Items]
Contingent consideration, liability, revenue earn-outs, payment period		5 years
Maximum cumulative earn-out		$ 5,000
Contingent consideration, liability			1,685			$ 1,614
Increase in contingent consideration			71
Contingent consideration paid			$ 1,685

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