Mainspring Energy

United States
New Lisbon, Wisconsin, United States, 94025

Company profile

Mainspring Energy company profile

Mainspring Energy develops and manufactures linear generators that convert fuel into electricity. The company focuses on providing clean energy solutions that enhance power generation efficiency. Its technology is designed to support various applications, including onsite power generation. Mainspring Energy emphasizes sustainability and aims to contribute to the transition to cleaner energy sources. Through its innovative approach, the company seeks to meet the growing demand for flexible and environmentally friendly energy solutions. Partnerships with other organizations further expand its capabilities in delivering effective energy systems.

Business identity

Contact email
[email protected]
Operating status
Active
Company type
For Profit
Employee range
251-500 employees
Founded
2010-01-01, Year

Headquarters

Postal code
94025
Country code
US
Continent
North America

Capital profile

Funding and company signals

Funding stage
Late Stage Venture
Funding rounds
8
Total equity funding
$726M
Last funding
Series F / $258M / 2025-04-14
Last equity funding
Series F / $258M
Investors
32
Lead investors
5
Founders
3
Articles
63

Founders and investors

Founders

Adam SimpsonMatt SvrcekShannon Miller

Lead investors

BloombergNEFDevonshire InvestorsGeneral CatalystLightrockUS Department of Energy

Investors

Alumni VenturesDCVCGeneral CatalystKhosla VenturesTemasek Holdings