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Wire · technology

Flatiron Energy Breaks Ground on Energizar Energy Storage Project in Chelsea, Massachusetts

12 November 2026 · By · Wire by Fusion42

Published

12 November 2026

Topic

technology

◆ Sectors

Climate Tech

◆ Geography

United States

◆ Source

Read at businesswire.com →

◆ Verified

Fusion42 · 12 November 2026 · Fusion42 review

Flatiron Energy has begun construction on the Energizar project, a 250 MW / 1,200 MWh battery energy storage facility in Chelsea, Massachusetts, set to be the largest in the Northeast and one of the largest urban battery storage sites globally, enhancing grid reliability and supporting local economic development.

This Wire brief sits within Fusion42's coverage of Climate Tech.

◆ ◆ The Wire takeaway

Massachusetts is backing large-scale urban battery storage with strong public and financial support, opening new opportunities if you deliver flexible grid solutions or workforce development tied to energy projects in the Northeast.

◆ Coverage

1 source · 12 Nov 2026

◆ Related on Wire

◆ Topics

Climate Techbattery-storagegrid-reliabilityenergy-transitionmassachusettsconstruction