catalyx space | $5,400,000 | (Nov 4, 2025)
Zeeg | $1,265,935 | (Nov 4, 2025)
xMEMS | $21,000,000 | (Nov 4, 2025)
Certified by Founder
Lodge
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.
- Industry Electric Power Generation
- Website https://www.mainspringenergy.com/
- LinkedIn https://www.linkedin.com/company/mainspringenergy/
Related People
Shannon MillerFounder
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.
Cephia AI | $4,000,000 | (Nov 4, 2025)
Ornn | $5,700,000 | (Nov 4, 2025)
octonomy | $20,000,000 | (Nov 4, 2025)
Helex | $3,500,000 | (Nov 4, 2025)
Indomo | $25,000,000 | (Nov 4, 2025)
AUI™ (Augmented Intelligence) | $20,000,000 | (Nov 4, 2025)
Popai Health | $11,000,000 | (Nov 4, 2025)
Mem0 | $24,000,000 | (Oct 30, 2025)
FrontlineIQ | $3,300,000 | (Oct 30, 2025)