Private energy storage developer
Appears in 1 story · Last updated Oct 16, 2026
Financing closed for Energizar; construction contractor not yet named
Flatiron Energy closed about $850 million in financing on October 15 for Energizar, a battery storage plant in Chelsea, Massachusetts. The project is designed for 250 megawatts and 1,200 megawatt-hours, and Flatiron says it will be the largest battery plant on the East Coast when it opens in late 2027.
Updated Oct 16
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