Quaise Energy

General InformationQuaise Energy is a Massachusetts-based geothermal technology company founded in 2018 with approximately 75-100 employees that develops millimeter-wave drilling systems to access ultra-deep geothermal resources.

Funding & FinancialsThe company has raised approximately $63 million across multiple rounds, with Series B funding led by major investors including Commonwealth Fusion Systems, Breakthrough Energy Ventures, and others.

Leadership & TeamCEO Matt Houde leads the company alongside co-founder and CTO Carlos Araque, who brings expertise in advanced drilling and energy systems from MIT and previous ventures.

Recent ActivityQuaise recently completed drilling demonstrations at their test site and announced partnerships with utilities and oil & gas operators to validate their technology on real wells by 2024-2025.

Highlights

Total Raised

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2 rounds

Latest Round

$134

Jul 22, 2026

Stage

Series B

energy

Employees

51-200

Founded 2018

Headquarters

News Coverage

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Talent Signals

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SEC Filings

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Backers

Idemitsu

JERA

Prelude Ventures

Safar Partners

Triple Point

Funding History

$134

2026

Series B

$134

2026

Series B

SEC Form D Editorial

Jul 22, 2026

$134 millionSeries B · Editorial

Investors: Prelude Ventures, JERA, Idemitsu, Safar Partners, Triple Point

Geothermal energy company developing superhot geothermal technology raised $134 million in Series B to fund Project Obsidian, the world's first commercial superhot geothermal power plant.

Jul 8, 2026

$134 millionSeries B · Editorial

Investors: Prelude Ventures, JERA, Idemitsu, Safar Partners

Superhot geothermal energy developer raised $134M in initial Series B close to advance Project Obsidian and develop millimeter wave drilling technology for utility-scale geothermal power.

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