Who founded Mainspring Energy?

Mainspring Energy was founded by Shannon Miller in 2010.

Who are Mainspring Energy's investors?

Mainspring Energy's investors include Khosla Ventures, Alumni Ventures, ClearSky, DCVC (Data Collective), Fine Structures Ventures, General Catalyst, Marunouchi Innovation Partners, Breakthrough Energy Ventures and 4 more.

Mainspring Energy

Founded 2010 · 524 employees on LinkedIn · 15 known investors

Find your way into Mainspring Energy

1,117 people in our graph can introduce you to the Mainspring Energy team.

Paths you didn't know you had: your email and LinkedIn already hold routes to the Mainspring Energy team. We find them
2nd- and 3rd-degree connections: the friend-of-a-friend routes you can't see from your own inbox or LinkedIn
Answers now, not in days: momentum is everything in a raise. Skip asking around whether someone knows someone

Days of research, done the moment you sign in, with every route ranked by how warm it is.

Mainspring Energy develops power generation systems. The company focuses on technology for utility and data center customers.

Deep Tech Energy Hardware

Founders & leadership

Mainspring Energy was founded in 2010 by Shannon Miller.

Shannon Miller Co-Founder and PresidentFounder of Mainspring Energy, which develops power generation systems for utility and data center customers.

Adam SimpsonFounder

Matt SvrcekFounder

Board

Tom LinebargerChairman & Chief Executive Officer

Investors · 15

Khosla Ventures✓ confirmed by Mainspring EnergyMenlo Park · $100K – $20M

How we know: Khosla Ventures's portfolio page · the company's own site · funding news · pulse2.com · the VCSheet dataset · open dataset · 5k.vc investor directory · Not right? Tell us

Alumni Ventureslisted by Alumni VenturesManchester · $100K – $10M

How we know: av.vc · Not right? Tell us

ClearSkylisted by ClearSkyWest Palm Beach

DCVC (Data Collective)listed by DCVC (Data Collective)Palo Alto · $5M – $25M

How we know: pulse2.com · the VCSheet dataset · open dataset · 5k.vc investor directory · Not right? Tell us

Fine Structures Ventureslisted by Fine Structures VenturesCambridge

How we know: Fine Structures Ventures's portfolio page · Not right? Tell us

General Catalystlisted by General CatalystSan Francisco · $30M

How we know: funding news · pulse2.com · open dataset · 5k.vc investor directory · Not right? Tell us

Marunouchi Innovation Partnerslisted by Marunouchi Innovation PartnersTokyo

How we know: pulse2.com · the VCSheet dataset · open dataset · 5k.vc investor directory · Not right? Tell us

Breakthrough Energy VenturesreportedBoston · $500K – $50M

How we know: a partner's Signal profile · Not right? Tell us

LightrockreportedLondon

How we know: pulse2.com · Not right? Tell us

M&G InvestmentsreportedSouth Africa

How we know: pulse2.com · Not right? Tell us

Pictet GroupreportedGeneva

How we know: pulse2.com · Not right? Tell us

TemasekreportedSingapore

How we know: funding news · pulse2.com · Not right? Tell us

Also in the syndicate · 3

Amazon’s Climate Pledge FundGates FrontierLGT Bank

Funding

SEC filings, press & company announcements

Undisclosed amountSeries FApr 2025
General Catalyst (lead), Amazon’s Climate Pledge Fund, DCVC, Gates Frontier, Khosla Ventures, LGT Bank, Lightrock, M&G Investments, Marunouchi Innovation Partners, Pictet Group, Temasek
Source ↗
Undisclosed amountSeries EMay 2022
Source ↗

Source: company announcements and press reports — follow each round's link for the claim.

Related companies · 1

CumminsCummins manufactures and sells diesel, natural gas, gasoline, electric and hybrid powertrains, power generation systems, and components including aftertreatment systems, turbochargers, transmissions and axles for heavy-duty trucks, medium-duty vehicles, light-duty automotive, industrial applications and power generation markets worldwide, serving original equipment manufacturers, distributors and dealers through a global network of approximately 640 distributor locations and 13,000 dealer locations.

Companies working in the same space as Mainspring Energy.

In the news

Mainspring Energy Raises Over $150 Million in Series Efinsmes.com · May 2022

Frequently asked questions

What does Mainspring Energy do?: Mainspring Energy develops power generation systems. The company focuses on technology for utility and data center customers.
Who founded Mainspring Energy?: Mainspring Energy was founded by Shannon Miller in 2010.
Who are Mainspring Energy's investors?: Mainspring Energy's investors include Khosla Ventures, Alumni Ventures, ClearSky, DCVC (Data Collective), Fine Structures Ventures, General Catalyst, Marunouchi Innovation Partners, Breakthrough Energy Ventures and 4 more.