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

Atura Power proposed designing, building and operating the BESS at its Napanee Generating Station in Bath, Ontario.

Atura Power and Ameresco will complete the project through a joint venture known as Napanee BESS Inc. Under terms of the award, the JV will 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 with the JV.

In mid-May, the IESO ESO offered contracts to seven battery storage facilities located throughout the province, varying in size from 5MW to 300MW. The entity also secured 586MW of gas-fired generating capacity from expansions and upgrades at existing sites.

And, a new agreement was finalized for the 540MW gas-fired Brighton Beach Generating Station to continue operations to 2034 and provide an additional 42.5MW of capacity through an efficiency upgrade.

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