# Mainspring Energy raises $95M Series D for linear generator

Mainspring Energy announced a $95 million Series D financing led by Devonshire Investors to accelerate delivery of its Mainspring Linear Generator for commercial, industrial, microgrid and utility customers.

- Type: Investment
- Announced: 2021-05-04
- Where: Menlo Park, California, United States
- Value: $95.0M
- Status: announced
- Products: linear generator
- Sectors: [Power Generation Equipment](https://endata.com/sectors/power-generation-equipment.md)

## Companies

- [Mainspring Energy](https://endata.com/companies/54899.md)
- [Equinor](https://endata.com/companies/1741.md) (investor)
- [Chevron Technology Ventures](https://endata.com/companies/3957.md) (investor)
- [AEP](https://endata.com/companies/8433.md) (investor)
- [Khosla Ventures](https://endata.com/companies/15123.md) (investor)
- [KCK Group](https://endata.com/companies/29600.md) (investor)
- [Bill Gates](https://endata.com/companies/29602.md) (investor)
- [Devonshire Investors](https://endata.com/companies/54900.md) (investor)
- [Princeville Capital](https://endata.com/companies/54901.md) (investor)
- [40 North Ventures](https://endata.com/companies/54902.md) (investor)
- [ClearSky](https://endata.com/companies/54903.md) (investor)

## Sources

- [mainspringenergy.com](https://www.mainspringenergy.com/news/mainspring-announces-95-million-series-d-financing-to-accelerate-delivery-of-its-breakthrough-power-generation-technology), 2021-05-04: "This round of funding with additional world-class investors further enables us to grow our linear generator business in order to meet that demand"

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Data from Endata (https://endata.com/). Announcements are summarized from public sources and may be incomplete; check the linked originals.