Fundraising Fox

Quaise Energy

Houston, US · Founded 2018 · Delaware corporation · 12 known investors

quaise.energy ↗

Quaise Energy develops superhot geothermal drilling technology using millimeter-wave powered drilling to access deep geothermal energy sources at unprecedented depths and temperatures for large-scale clean power generation globally.

CleantechDeep TechEnergy

Founders & leadership

Quaise Energy was founded in 2018 by Carlos Araque and Matt Houde.

CA
Carlos AraqueCo-founder
MHMatt Houde
Matt HoudeinFounder

Board

CCColleen Calhoun
Colleen CalhouninBoard directorInvestor at BURNT ISLAND VENTURES
VK
Vinod KhoslaBoard director
WR
William RestrepoBoard director
FA
Frohman AndersonBoard director
MCMark Cupta
Mark CuptainBoard directorManaging Director at Prelude Ventures
ADAnn DeWitt
Ann DeWittinBoard directorGeneral Partner at The Engine Ventures
CSCraig Shapiro
Craig Shapiroin𝕏Board directorFounder and Managing Partner at Collaborative Fund
AA
Ali AzadBoard director

Investors · 12

Collaborative FundNew York · $500K – $1M
Fine Structures VenturesCambridge
Helium-3 VenturesNew York
Prelude VenturesSan Francisco · $100K – $5Mvia Mark Cupta · board
TechEnergy VenturesBuenos Aires
Xplorer CapitalMenlo Park
8090 IndustriesreportedNew York
Idemitsu Kosanreported
JERAreportedTokyo
Safar PartnersreportedCambridge
Starlight VenturesreportedMiami · $100K – $3M
The Engine VenturesreportedCambridge

Reported raises · per SEC filings

Form D private placements

$216.9M disclosed across 5 rounds · 2020–2026

▶$133.8MraisedJul 2026 · 49 investors · Other Energy
Rule 506(b)
Quaise Energy Series B Funding: $134M for Superhot Geothermal and Project Obsidian - News and Statistics - IndexBoxindexbox.io · Jul 2026Quaise Energy secures $134m for Project Obsidianfinance.yahoo.com · Jul 2026
Officers, directors & promoters on the filing
  • Carlos AraqueExecutive Officer, Director
  • Colleen CalhounDirector
  • Vinod KhoslaDirector
  • William RestrepoDirector
  • Frohman AndersonDirector
  • Mark CuptaDirector
  • Ali AzadDirector
Offering amount
$144.1M
Amount sold
$133.8M
First sale
Jun 2026
Incorporated
Corporation, Delaware
Federal exemptions
06b
Full filing on SEC EDGAR ↗
▶$13.1MraisedDec 2023 · 9 investors · Other Energy
Rule 506(b)
Officers, directors & promoters on the filing
  • Jill WatzDirector
  • Carlos AraqueExecutive Officer, Director
  • Ann DeWittDirector
  • William RestrepoDirector
  • Kevin BonebrakeExecutive Officer
  • Mark CuptaDirector
  • Colleen CalhounDirector
  • Frohman AndersonDirector
Offering amount
$25M
Amount sold
$13.1M
First sale
Nov 2023
Incorporated
Corporation, Delaware
Federal exemptions
06b
Full filing on SEC EDGAR ↗
▶$52MraisedJun 2022 · 26 investors · Other Energy
Rule 506(b)
Officers, directors & promoters on the filing
  • Carlos AraqueExecutive Officer, Director
  • Arunas ChesonisDirector
  • Mark CuptaDirector
  • Jill WatzDirector
  • Ann DeWittDirector
  • Colleen CalhounDirector
  • William RestrepoDirector
Offering amount
$52M
Amount sold
$52M
First sale
Jan 2022
Incorporated
Corporation, Delaware, 2018
Federal exemptions
06b
Full filing on SEC EDGAR ↗
▶$12MraisedAug 2021 · 1 investors · Other Energy
Rule 506(b)
Officers, directors & promoters on the filing
  • Carlos AraqueExecutive Officer, Director
  • Ann DeWittDirector
  • Colleen CalhounDirector
  • Craig ShapiroDirector
Offering amount
$12M
Amount sold
$12M
First sale
Jul 2021
Incorporated
Corporation, Delaware, 2018
Federal exemptions
06b
Full filing on SEC EDGAR ↗
▶$6MraisedJun 2020 · 5 investors · Other Energy
Rule 506(b)
Officers, directors & promoters on the filing
  • Ann DeWittDirector
  • Carlos AraqueExecutive Officer, Director
  • Craig ShapiroDirector
Offering amount
$6M
Amount sold
$6M
First sale
May 2020
Incorporated
Corporation, Delaware, 2018
Federal exemptions
06b
Full filing on SEC EDGAR ↗

Source: SEC EDGAR Form D. Amounts as filed; amended filings shown once at their latest values.

In the news

Quaise Energy Series B Funding: $134M for Superhot Geothermal and Project Obsidian - News and Statistics - IndexBoxindexbox.io · Jul 2026Geothermal Heats Up: Fervo Drilling Rates Soar 143% While Quaise Raises $134M<!-- --> | ZeroHedgezerohedge.com · Jul 2026Quaise Energy secures $134m for Project Obsidianfinance.yahoo.com · Jul 2026Quaise Energy Raises $134 Million in Initial Close of Series B to Build World’s First Superhot Geothermal Power Plantbusinesswire.com · Jul 2026 · press releaseQuaise Energy Raises $134M in Initial Close of Series B Fundingfinsmes.com · Jul 2026Geothermal Startup Quaise Secures Funding for Oregon Power Plant Project - Bloombergbloomberg.com · Jul 2026Quaise Energy raises $134M to fuel superhot geothermal… | Canary Mediacanarymedia.com · Jul 2026Quaise Energy Raises $134 Million in Initial Close of Series B to Build World’s First Superhot Geothermal Power Plantbusinesswire.com · Jul 2026

Frequently asked questions

What does Quaise Energy do?
Quaise Energy develops superhot geothermal drilling technology using millimeter-wave powered drilling to access deep geothermal energy sources at unprecedented depths and temperatures for large-scale clean power generation globally.
Who founded Quaise Energy?
Quaise Energy was founded by Carlos Araque, Matt Houde in 2018.
Who are Quaise Energy's investors?
Quaise Energy's investors include Collaborative Fund, Fine Structures Ventures, Helium-3 Ventures, Prelude Ventures, TechEnergy Ventures, Xplorer Capital, 8090 Industries, Idemitsu Kosan and 4 more.
How much funding has Quaise Energy raised?
Quaise Energy has disclosed $216.9M raised across 5 rounds.
Where is Quaise Energy headquartered?
Quaise Energy is headquartered in Houston, US.