Backed by more than a decade of R&D, Fourth Power provides utility-scale thermal battery solutions that store renewable energy as heat for short and long durations to dispatch electricity to the grid in seconds. Developed by MIT and Georgia Tech scholars, the company aims to supply affordable and reliable clean power using innovative thermal technology with thermophotovoltaic (TPV) solar cells, turning the light from heated carbon blocks into electricity. The company holds several records, including the record for thermophotovoltaic efficiency at 41% and a Guinness World Record for the highest temperature pump at 1200°C degrees. Fourth Power's extremely high temperature system ensures maximum efficiency with readily available materials, making its technology the lowest-cost option for grid decarbonization.
| Date | Amount | Type | Investors | Valuation |
|---|---|---|---|---|
| 12/13/23 | $19,000,000 | Series A |
Black Venture Capital Consortium Breakthrough Energy Ventures DCVC  | undisclosed |
