Web Analytics

3 Latest Announced Rounds

  • $15,000,000
    Seed

    4 Investors

    Technology, Information and Internet
    Oct 2nd, 2025
  • $4,693,900
    Pre-Seed

    1 Investors

    Software Development
    Oct 2nd, 2025
  • $4,000,000
    Seed

    1 Investors

    Software Development
    Oct 2nd, 2025
$897.80M Raised in 50 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.