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- Quaise Energy
Quaise Energy Funding, Investors & Competitors
Quaise Energy has raised $134M across 3 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 3 funding rounds
Key investors in Quaise Energy
Idemitsu Americas Holdings Corporation
Prelude Ventures
Safar Partners
Sabanci Climate Ventures
JERA Ventures
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
Website
Status
Privately held
Customer focus
B2B
Revenue model
Services
Quaise Energy Funding History
Quaise Energy has raised a total of $134M across 3 funding rounds.
Quaise Energy's first fundraising round was a undisclosed-stage round in October 2022. The most recent completed round was a $134M Series B in July 2026.
Quaise Energy funding rounds
| Date | Stage | Investors | Raised | Deal Summary |
|---|---|---|---|---|
| Jul 2026 | Series B | Prelude Ventures (lead); Idemitsu Americas Holdings Corporation; Safar Partners; JERA Ventures | $134M | Quaise 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 2026 | Strategic investment | Idemitsu Americas Holdings Corporation (lead) | - | - |
| Oct 2022 | Undisclosed stage | Sabanci Climate Ventures | - | Sabancı Holding disclosed on 11 October 2022 that its climate technologies subsidiary had made a direct investment in Quaise Energy, the American developer of deep geothermal drilling technology. The holding said it had set up Sabancı İklim Teknolojileri as a wholly owned subsidiary to invest in renewable energy and climate technologies in the United States and Europe, and that a long-term strategic partnership with the US fund manager Safar Partners gave it the right to invest directly in start-ups within that manager's network alongside its fund commitments. Quaise Energy and the fusion company Commonwealth Fusion Systems were named as the first direct investments made under that arrangement. Sabancı disclosed neither the amount invested nor the stake acquired, and did not identify the financing round involved; Sabancı Holding's 2022 annual report repeats that the group made direct investments in the two companies following the Safar Partners partnership. Quaise itself does not name Sabancı in any of its funding announcements. Quaise had raised a USD 40 million Series A in February 2022 led by Safar Partners, expanded to USD 52 million in June 2022 with an additional USD 12 million led by TechEnergy Ventures. Quaise Energy was founded in 2018 as a spin-out of the Massachusetts Institute of Technology and is now run from Houston, Texas. Its millimetre-wave drilling system vaporises rock rather than cutting it, which the company says allows wells far deeper than conventional geothermal and access to supercritical rock above 400 degrees Celsius, making geothermal power possible in places without shallow heat and allowing existing thermal plants to be repowered. |
Who has invested in Quaise Energy?
5 investors have backed Quaise Energy across its funding rounds, including Idemitsu Americas Holdings Corporation, Prelude Ventures, Safar Partners, Sabanci Climate Ventures and JERA Ventures.
Lead investors include Prelude Ventures and Idemitsu Americas Holdings Corporation.
Quaise Energy Investors
| Investor | HQ | Rounds | Role | First check |
|---|---|---|---|---|
| 2 | Lead | Jun 2026 | ||
| 1 | Lead | Jul 2026 | ||
| 1 | Participant | Jul 2026 | ||
This data is available for Pro users. Sign up to see all 5 Quaise Energy investors. Start Free Trial | ||||
Benchmark 350K+ Funding Rounds and Disclosed VC Valuation Multiples
Sign up to see data on 350K+ funding rounds and disclosed revenue and EBITDA valuation multiples, from seed, through growth stage, to pre-IPO.
Start Free TrialQuaise Energy Competitors
Quaise Energy competitors include listed companies like Vistra, First Solar, Nextracker and LONGi, and private ones like Enilive and Farasis Energy.
| Company | HQ | Status | Revenue | EBITDA | Valuation | Revenue Multiple |
|---|---|---|---|---|---|---|
| Publicly listed | $18B | $5B | $42B | 3.0x | ||
| Publicly listed | $5.2B | $2.1B | $22B | 4.2x | ||
| Publicly listed | $3.6B | $747M | $16B | 3.6x | ||
| Publicly listed | $11B | $140M | $14B | 1.3x | ||
| Private | - | - | $14B | - | ||
| Private | - | - | $4.2B | - |
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, Huaneng Lancang River, Vestas, Ørsted and Verbund.
| Last FY | EV/Revenue | EV/EBITDA | ||||||
|---|---|---|---|---|---|---|---|---|
| Revenue | EBITDA | Last FY | LTM | 2027E | Last FY | LTM | 2027E | |
| $38B | $3.2B | 5.0x | 4.2x | 59.5x | 30.9x | |||
| $49B | $17B | 4.8x | 4.6x | 14.1x | 12.6x | |||
| $13B | $11B | 11.8x | 12.1x | 14.4x | 15.4x | |||
| $26B | $5B | 4.4x | 3.5x | 22.5x | 13.9x | |||
| $18B | $5B | 3.6x | 3.0x | 12.8x | 9.2x | |||
| $2B | $1B | 19.6x | 17.5x | 37.3x | 32.6x | |||
| $4B | $3.1B | 12.7x | 12.4x | 16.4x | 17.0x | |||
| $21B | $2.5B | 1.4x | 1.3x | 12.0x | 9.8x | |||
This data is available for Pro users. Sign up to see all Quaise Energy competitors and their valuation data. Start Free Trial | ||||||||
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 3 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, JERA Ventures and Sabanci Climate Ventures. |
| Which companies are comparable to Quaise Energy? | Companies comparable to Quaise Energy include Vistra, First Solar, Nextracker, LONGi, Enilive and Farasis Energy. |
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