United States · 
Who invested in Quaise Energy?
Quaise Energy's investors include Safar Partners, Collaborative Fund, Prelude Ventures, US Department of Energy and Mitsubishi Corporation, and 2 more on record.
202420252026
$21MSeries A$134MSeries B$25MGrant
United States · Funded startup
Who invested in Quaise Energy
3 rounds we have observed, with the 7 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.
Raised 2 months ago
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Funding summaryUpdated 5 Nov 2026
$180Mraised across 3 rounds since 2023, from 3 sources
$21MSeries A$134MSeries B$25MGrant
- Latest round
- Grant, $25MSept 2026
- Biggest round
- $134MSeries B · Jul 2026
- Investors
- 7 (1 led)
The funding story
Each circle is a round, placed by date and sized by amount. The line above is the running total.
- First round
- Series A, $21M Dec 2023
- Biggest round
- $134M Series B · Jul 2026
- Usual gap between rounds
- 2.6 years the median of 2
The rounds
- Sept 2026Grant$25M1 new2 returning
Source recordedSEC filing: $179M sold
- Jul 2026Series B$134M3 new1 returning
Reported by VentureburnSEC filing: $134M sold
- Dec 2023Series A$21M3 new
Source recordedSEC filing: $13M sold, first sale Nov 2023
Funding filed with regulators
Quaise Energy filed 4 raises, $378M in all. Filings say how much was sold and to how many investors; they never name the investors.
- Sept 2026$179MSEC Form D
- Jul 2026$134MSEC Form D
- Nov 2023$13MSEC Form D
- Jan 2022$52MSEC Form D
Founders and team
From Quaise Energy's own website: 45 on the team.
- Diane HughesVice President, Marketing & Communications
- Franck MonmontVice President, Research
- Geoffrey GarrisonVice President, Operations
- Henry PhanVice President, Engineering
- Kathryn HiteChief Operating Officer
- Kevin BonebrakeChief Financial Officer
- Matthew HoudeChief of Staff
- Andrew HuntEngineer
- Anthonie TranEngineer
- Arif KhanEngineer
- Arturo QuezadaEngineer
- Atirath DharaExperimental Research Associate
- Brian ChristiansenEngineer
- Carlos OrtizEngineer
- Casey RodgersEngineer
- Charles StewartDesigner
- Chris HallDesigner
- Clay BryantDesigner
And 27 more on the team.
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 A2023Series B2026Grant2026
Safar Partners
Collaborative Fund
Prelude VenturesL
US Department of Energy
Mitsubishi Corporation
JERA
Idemitsu
Safar PartnersCollaborative FundPrelude VenturesLUS Department of EnergyMitsubishi CorporationJERAIdemitsuEveryone who backed them
Missing a round, or an investor who was in one? Tell us.
Also claim to have backed them
These 2 firms list Quaise Energy as a portfolio company on their own websites, but no report of a round names them. They are the firms' own claims, kept apart from the rounds above.
Quick answers about Quaise Energy
How much has Quaise Energy raised?
Quaise Energy has raised $180M across 3 rounds since 2023.
When did Quaise Energy last raise?
Quaise Energy's most recent round was a Grant of $25M in Sept 2026.
What was Quaise Energy's biggest round?
Quaise Energy's largest round on record is $134M (Series B), in Jul 2026, led by Prelude Ventures.
Who backed Quaise Energy first?
Quaise Energy's first round on record, in Dec 2023, was backed by Collaborative Fund, Safar Partners and Mitsubishi Corporation.
What stage is Quaise Energy at?
Quaise Energy's latest named round is a Grant, in Sept 2026.
Where is Quaise Energy based?
Quaise Energy is based in the United States.
Who led Quaise Energy's rounds?
Prelude Ventures led the Series B in 2026.
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