Series E - Mainspring Energy
Investment Firm
Overview
Mainspring Energy is engineering advanced technology by developing a prototype of a linear generator that converts fuel to electricity.
Announced Date
May 24, 2022
Funding Type
Series E
Highlights
Location
United States, North America
Social
Participant Investors
5
Round Details and Background
Mainspring Energy raised $150000000 on 2022-05-24 in Series E
Mainspring Energy is engineering advanced technology by developing a prototype of a linear generator that converts fuel to electricity.
Company Funding History
6
| Announcment Date | Transaction Name | Number Of Investors | Lead Investor | Money Raised |
|---|---|---|---|---|
| May 04, 2021 |  Series D - Mainspring Energy | 14 | - | 95.0M |
| May 24, 2022 | Series E - Mainspring Energy | 6 | - | 150.0M |
| Sep 22, 2022 | Series E - Mainspring Energy | 9 | - | 140.0M |
| Apr 17, 2023 | Grant - Mainspring Energy | 1 | - | undefined |
Recent Activity
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