MANUFACTURE
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WIKI
PUBLIC RECORD · EST. 2026
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Fourth Power
gofourth.com ↗
Founded
2021
Category
POWER / GRID / THERMAL BATTERY
Total raised
$19,000,000
Location
CAMBRIDGE, MA
Layer
COMPONENTS
Thermal battery storing energy in graphite blocks and liquid metal.
Funding history
Round
Amount
Date
Lead
—
$19M
—
Breakthrough Energy
Related
American Turbines
Ayr Energy
Base Power
Armada