Who invested in Aquion Energy

6 rounds we have observed, with the 15 investors named in them. Every figure came from a named source, and where the company reported a raise to the SEC itself, that is shown beside it.

Cleantech

Funding summaryUpdated 26 Oct 2026

$186Mraised across 6 rounds since 2008, from 6 sources

$7.5MSeries A$30MVenture$35MSeries D$57MSeries D$20MDebt$37MSeries E

Latest round: Series E, $37MSept 2014
Biggest round: $57MSeries D · Mar 2014
Step-upi: 1.8×
Investors: 15

See who backed them

The funding story

Each circle is a round, placed by date and sized by amount. The line above is the running total.

200920102011201220132014

$7.5MSeries A$30MVenture$35MSeries D$57MSeries D$20MDebt$37MSeries E

First round: Series A, $7.5M
Biggest round: $57M
Usual gap between rounds: 11 months

The rounds

Sept 2014
Series E$37M4 new
- Total Energy Ventures
- Shell Technology Ventures
- Technology Ventures Corporation
- CapX Fund IV
From a historical funding recordSEC filing: $25M sold, first sale Sept 2014
May 2014
Debt$20M2 new
- Trinity Capital
- CapX Partners
From a historical funding recordSEC filing: $57M sold, first sale Apr 2013
Mar 2014
Series D$57M2 new6 returning
From a historical funding recordSEC filing: $57M sold, first sale Apr 2013
Apr 2013
Series D$35M3 new3 returning
Reported by pehub.comSEC filing: $10.0M sold, first sale Apr 2013
Sept 2011
Venture$30M4 new
Reported by finsmes.comSEC filing: $20M sold, first sale Jul 2011
Jun 2008
Series A$7.5M
No investor was named in the report.
From a historical funding record

Founders and team

From Aquion Energy's own website: 1 founder, 6 on the team.

Professor Jay WhitacreChief Scientist and Founder

Scott A. PearsonChief Executive Officer
Paul NeuhartVice President, Global Supply Chain
Tim PoorVice President, Business Development & Sales
Vic WarrenVice President of Manufacturing
Dan VoelkerChief Operating Officer
Battery ManufacturersBoard of Directors

AdvisersThomas R. Mcdaniel

Who was in which round

The busiest backers across the latest rounds. A filled square is a round they joined; a dark one, a round they led.

Series A2008Venture2011Series D2013Series D2014Debt2014Series E2014

Kleiner Perkins Caufield & Byers

Foundation Capital

Advanced Technology Ventures

Bright CapitalBill GatesGentry Venture PartnersTrinity Capital

TriplePoint CapitalTotal Energy VenturesShell Technology Ventures

Everyone who backed them

Kleiner Perkins Caufield & ByersVC firm3rounds

Foundation CapitalVC firm3rounds

Advanced Technology VenturesVC firm3rounds

Bright CapitalInvestment firm2rounds

Bill GatesVC firm2rounds

Gentry Venture PartnersVC firm2rounds

Trinity CapitalVC firm1round

TriplePoint CapitalVC firm1round

Total Energy VenturesVC firm1round

Shell Technology VenturesVC firm1round

CapX PartnersVC firm1round

Joby PritzkerAngel1round

Nick PritzkerAngel1round

Technology Ventures CorporationVC firm1round

CapX Fund IVno record of our own yet1round

Missing a round, or an investor who was in one? Tell us.

Also claim to have backed them

This firm lists Aquion Energy as a portfolio company on their own website, but no report of a round names it. They are the firms' own claims, kept apart from the rounds above.

Horizon Technology FinanceVenture debtPer its own site

Quick answers about Aquion Energy

Who invested in Aquion Energy?

Aquion Energy's investors include Kleiner Perkins Caufield & Byers, Foundation Capital, Advanced Technology Ventures, Bright Capital and Bill Gates, and 10 more on record.

How much has Aquion Energy raised?

Aquion Energy has raised $186M across 6 rounds since 2008.

When did Aquion Energy last raise?

Aquion Energy's most recent round was a Series E of $37M in Sept 2014.

What was Aquion Energy's biggest round?

Aquion Energy's largest round on record is $57M (Series D), in Mar 2014.

Who backed Aquion Energy first?

Aquion Energy's first round on record, in Sept 2011, was backed by Kleiner Perkins Caufield & Byers, Foundation Capital and Advanced Technology Ventures and 1 others.