Mainspring
Manufacturer of linear power generators designed to bring affordable, reliable and net-zero carbon grid of the future.
Energy Production
📍 Menlo Park, CA
Founded 2010
Current Valuation
$850M
as of 2022-Q2
PRIVATE
Manufacturer of linear power generators designed to bring affordable, reliable and net-zero carbon grid of the future.
Company Profile
Last Round
Series E — $150M (May 2022)
Fundraising Status
Series E · $150M · 4y 1mo ago
privateTotal raised $406M
Latest Funding Round
| Round | Amount | Date | Lead Investor | Post-Money |
|---|
| Series E | $150M | May 2022 | — | $850M |
EnergyClean EnergyOil and Gas
Private-company numbers are not real-time. Reflects publicly disclosed valuations from press releases, news reports, and tender offers as of 2022-Q2. Refreshed quarterly.