Ameresco said it signed a deal with United Power for a multiple site, 78.3 MW, 313.34 MWh battery storage system to be deployed in three Colorado counties.

The deal includes a 20-year agreement between Ameresco and United Power. Locating battery arrays across United Power’s service territory is expected to help the cooperative balance its load and integrate renewable resources into its operations.

Ameresco is expected to provide four 11.75 MW and four 7.84 MW battery arrays across eight different substation sites owned by United Power in Adams, Broomfield, and Weld counties, north and northeast of Denver. 

The assets could enter service in 2024.

In June, a joint venture between Atura Power, a unit of Ontario Power Venture, and Ameresco was selected to build a 250 MW / 1,000 MWh battery energy storage system (BESS) by the Independent Electricity System Operator (IESO) in Canada. 

Under terms of that award, the JV was expected to enter into a 20-year capacity agreement with the IESO. Ameresco is a 10.1% minority partner in the JV and will provide engineering and construction services under a separate contract.

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