Quaise Energy Funding, Investors & Competitors

Quaise Energy has raised $134M across 2 funding rounds, most recently a $134M Series B in July 2026.

Last Quaise Energy funding round

$134M

Series B · Jul 2026

Cumulative funding Quaise Energy raised

$134M

across 2 funding rounds

Key investors in Quaise Energy

  • Idemitsu Americas Holdings Corporation
  • Prelude Ventures
  • Safar Partners
  • JERA Ventures

Quaise Energy Overview

About Quaise Energy

Quaise Energy is an energy company developing millimeter-wave drilling systems for geothermal projects. Founded in 2018 and based in Cambridge, Massachusetts, the firm targets broader geographic access to this resource.


Founded

2018

HQ

United StatesHouston, TX

Website

quaise.com

Status

Privately held

Customer focus

B2B

Revenue model

Services

Quaise Energy Funding History

Quaise Energy has raised a total of $134M across 2 funding rounds.

Quaise Energy's first fundraising round was a strategic investment round in June 2026. The most recent completed round was a $134M Series B in July 2026.

Quaise Energy funding rounds

Quaise Energy funding rounds
DateStageInvestorsRaisedDeal Summary
Jul 2026Series BPrelude Ventures (lead); Idemitsu Americas Holdings Corporation; Safar Partners; JERA Ventures$134MQuaise Energy closed the initial $134 million equity component of its Series B financing on July 7, 2026, with Idemitsu Americas Holdings Corporation (acting for Idemitsu Kosan Co., Ltd.) and JERA providing strategic investments alongside Prelude Ventures, which led the round. The transaction involved the issuance of convertible preferred shares to Idemitsu, with the investment announced on June 25, 2026, prior to the public close. This $134 million initial close brings Quaise's total funding to $230 million, with additional project-level equity and debt capital expected to close imminently as part of a broader capital program. The capital will fund Project Obsidian, the world's first commercial superhot geothermal power plant, and advance Quaise's millimeter wave drilling system to depths exceeding 5 km, enabling utility-scale geothermal energy generation. Idemitsu's participation reflects its strategic commitment to next-generation energy solutions for stable, sustainable power supply at scale, leveraging its expanding U.S. presence through Idemitsu Americas Holdings Corporation to drive innovation and operational support across the Americas. Quaise Energy is a Houston-based developer of utility-scale superhot geothermal energy, building power plants that generate electricity from the Earth's natural heat using advanced drilling technology. The company is advancing toward first revenues secured by undisclosed commercial off-take partners while concurrently raising project-specific financing. Nearly all existing investors, including Safar Partners, participated in the Series B round alongside new strategic investors JERA and Idemitsu.
Jun 2026Strategic investmentIdemitsu Americas Holdings Corporation (lead)--

Who has invested in Quaise Energy?

4 investors have backed Quaise Energy across its funding rounds, including Idemitsu Americas Holdings Corporation, Prelude Ventures, Safar Partners and JERA Ventures.

Lead investors include Prelude Ventures and Idemitsu Americas Holdings Corporation.


Quaise Energy Investors

Investors in Quaise Energy by funding rounds participated
InvestorHQRoundsRoleFirst check
Idemitsu Americas Holdings CorporationUnited StatesUnited States2LeadJun 2026
Prelude VenturesUnited StatesSan Francisco, CA1LeadJul 2026

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Quaise Energy Competitors

Quaise Energy competitors include listed companies like Vistra, First Solar, Nextracker and LONGi, and private ones like Enilive and Northvolt.

Public and private companies comparable to Quaise Energy
CompanyHQStatusRevenueEBITDAValuationRevenue Multiple
VistraUnited StatesUnited StatesPublicly listed$18B$5B$48B3.3x
First SolarUnited StatesUnited StatesPublicly listed$5.2B$2.1B$22B4.0x
EniliveItalyRomePrivate--$14B-
NextrackerUnited StatesUnited StatesPublicly listed$3.6B$747M$13B2.9x
LONGiChinaChinaPublicly listed$10B$139M$12B1.1x
NorthvoltSwedenStockholmPrivate--$12B-

Quaise Energy Public Comps

Quaise Energy is still privately-owned, but its public comps include GE Vernova, Iberdrola, China Yangtze Power, Constellation Energy, Vistra, ACWA Power, Vestas, Ørsted, Gulf Development and Huaneng Lancang River.

Last FYEV/RevenueEV/EBITDA
RevenueEBITDALast FYLTM2027ELast FYLTM2027E
GE Vernova$38B$3.2B6.2x5.4x73.5x43.5x
Iberdrola$51B$17B4.4x4.3x13.2x11.8x
China Yangtze Power$13B$11B11.4x11.3x13.9x14.4x
Constellation Energy$26B$5B4.6x3.8x23.5x15.3x
Vistra$18B$5B4.0x3.3x13.9x10.2x
ACWA Power$2B$1.1B22.3x19.9x41.9x36.4x
Vestas$22B$2.6B1.4x1.3x11.9x10.1x
Ørsted$9.8B$2.9B3.6x2.8x11.9x8.1x

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Common questions about Quaise Energy

When was Quaise Energy founded?Quaise Energy was founded in 2018.
Where is Quaise Energy headquartered?Quaise Energy is headquartered in Houston, TX, United States.
Is Quaise Energy publicly listed?No, Quaise Energy is a private, VC-backed company.
How much funding has Quaise Energy raised?Quaise Energy has raised $134M across 2 funding rounds.
What was Quaise Energy's last funding round?Quaise Energy's last funding round was a $134M Series B in July 2026, led by Prelude Ventures.
Who are Quaise Energy's investors?Quaise Energy's investors include Idemitsu Americas Holdings Corporation, Prelude Ventures, Safar Partners and JERA Ventures.
Which companies are comparable to Quaise Energy?Companies comparable to Quaise Energy include Vistra, First Solar, Enilive, Nextracker, LONGi and Northvolt.

See companies similar to Quaise Energy

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