Power grids need low-cost long-duration storage to supply electricity when renewable generation is unavailable.
R&D Focus
High-temperature graphite thermal storage, molten-tin heat transfer and thermophotovoltaic power conversion.
Innovative Solution
Electricity heats graphite blocks; molten tin moves heat to a thermophotovoltaic converter that returns stored heat to electricity on demand.
Investment Funding
Last Funding Stage
Series A
Total Funding Amount
$19M
Last Funding Amount
$19M
Last Funding Date
12/13/2023
Startup Stage
Growth Stage
Lead Investors
DCVC, Breakthrough Energy Ventures and Black Venture Capital
People
Founders
Asegun Henry
CEO
Arvin Ganesan
About
Fourth Power provides renewable energy an on-demand energy source through utility-scale thermal storage.
Products
Product
Fourth Power utility-scale thermal energy-storage system.
Star Product
Integrated thermal battery, because it combines the company’s graphite storage, molten-tin transfer and TPV conversion technologies.
Demo Product or Complete Product?
Demonstration stage. Subsystem demonstrations are operating and an integrated 1 MWh-electric system is being completed for customer deployment preparation.
Future Plan
Market Expansion
Preparing first utility-scale customer deployments after completion of the integrated demonstration system.
Investment Funding
$19 million Series A announced in 2023; a later $20 million financing was announced to advance commercialization and the demonstration system.
Awards and Recognitions
Awards
World Economic Forum Technology Pioneer, 2024.
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