Key Capture Energy is at the forefront of bringing renewable energy to Connecticut, ahead of the state’s goal of getting all its electricity from zero-carbon sources by 2040. The Albany, New York-based company doesn’t install solar arrays or build offshore wind farms. Its projects are based on land, usually near electric substations. Key Capture develops and installs utility-scale battery energy storage facilities, which take surplus energy from solar and wind sources during peak production, store it and then dispatch it to the electric grid when it’s needed. Under the current system, electricity never gets wasted because the grid operator, ISO-New England, can turn additional power plants on when demand is high, or off when demand is low. However, as an increasing percentage of the state’s power comes from intermittent solar- and wind-powered sources, ISO-New England will rely on battery storage to maintain an adequate power supply. Key Capture has eight energy battery storage projects planned in Connecticut. Two have already received approvals from the Siting Council: one in Windsor Locks and another in East Hampton. These will be the first battery energy storage facilities in Connecticut. The company plans to begin operating both in 2026. The projects are 5 MW, which is roughly enough energy to power 4,000 homes. The batteries can dispatch energy for two hours, Williamson said. Key Capture is planning an additional 5 MW project in Stafford/Willington.
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