On Tuesday, Mainspring Energy, an energy technology startup in the emerging field of onsite power generation, announced that it has received a Series D venture capital round of $95 million. The investment round was led by Devonshire Investors, the private equity firm affiliated with Fidelity Investments parent company FMR LLC, along with Princeville Capital, 40 North Ventures, and Chevron Technology Ventures. Existing investors Khosla Ventures, Bill Gates, ClearSky, AEP, KCK, and Equinor re-upped for the Series D.
The new funds will be used to accelerate the rollout of Mainspring’s core product, the Mainspring Linear Generator, to a broader range of commercial, industrial, microgrid, and utility customers, by scaling its manufacturing operations, hiring more staff, and consolidating its position in the U.S. market. To date, the company has raised $228 million in venture capital.