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3 Latest Announced Rounds

  • $10,000,000
    Seed

    1 Investors

    Data Infrastructure and Analytics
    Aug 22nd, 2025
  • $4,873,008
    Seed

    4 Investors

    Residential Building Construction
    Aug 22nd, 2025
  • $20,000,000
    Series A

    2 Investors

    Medical Equipment Manufacturing
    Aug 22nd, 2025
$901.54M Raised in 52 Funding Rounds in the past 7 Days - View All

Funding Round Profile

Mainspring Energy

start up
United States - Menlo Park, CA
  • 16/04/2025
  • Series F
  • $258,000,000

Mainspring designs and manufactures an advanced, flexible power generation solution — the Linear Generator — that gives leading C&I companies, data centers, and utilities reliable, scalable, sustainable power capacity. Any fuel, any scale, anytime, anywhere.


Related People

Shannon MillerFounder

Shannon Miller United States - Menlo Park, California

Working with the world’s best power generation technology and team along with leading Fortune 500 customers to deliver reliable, high-efficiency, and affordable electricity.