Mainspring Energy

Mainspring Energy designs and manufactures linear generators that offer advantages in cost, reliability, and flexibility, dynamically switching among fuels. Their low-emission, scalable products are rapidly adopted across diverse sectors, from data centers to utilities, providing unmatched optionality in power deployment.


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Funding Round: Series F

Funding Amount: $258M

Date: 14-Apr-2025

Investors: General Catalyst, Amazon's Climate Pledge Fund, DCVC, Temasek, Marunouchi Innovation Partners, M&G Investments, Pictet Group, Lightrock, LGT Bank, Khosla Ventures, Gates Frontier

Markets: Energy, Power Generation, Electric Power Generation

HQ: Menlo Park, California, United States

Founded: 2010

Website: https://www.mainspringenergy.com/

LinkedIn: https://www.linkedin.com/company/mainspringenergy

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