QQuaise Energy develops deep geothermal energy using a millimeter-wave drilling system to reach temperatures above 400°C at depths up to 20 kilometers. The goal is to retrofit existing coal and gas power plants to tap a stable, weather-independent clean energy source, avoiding hydraulic fracturing. The company leverages gyrotron-based drilling technology adapted from fusion research and has demonstrated field tests to show progress toward scalable deep geothermal deployment.
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51-200
Company Stage
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Total Funding
$298M
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Founded
2018
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Kyoto Fusioneering supplies gyrotron system to Quaise Energy. Kyoto Fusioneering (KF) has received an order from Quaise Energy, Inc. for a gyrotron system that will support Quaise's millimeter-wave drilling technology for superhot geothermal development. The agreement was signed on August 17, 2026, marking a significant step in the commercial application of technology originally developed for fusion research. The order represents the first customer outside the fusion sector for KF's plasma heating business. While gyrotrons have traditionally been associated with heating plasma in experimental and developing fusion systems, the Quaise project demonstrates how the same high-power technology can be adapted for another demanding energy application. Quaise is developing a drilling approach designed to reach extremely deep, high-temperature geothermal resources that conventional mechanical drilling methods can struggle to access economically. Its technology uses millimeter waves generated by a gyrotron to ablate rock, potentially enabling drilling at depths and temperatures associated with superhot geothermal resources. Millimeter waves for advanced geothermal drilling. Conventional drilling relies heavily on mechanical equipment to break and remove rock. As wells become deeper and temperatures rise, however, mechanical drilling systems face increasing technical and economic challenges. High temperatures can affect downhole equipment, while hard rock formations can increase drilling time, equipment wear and operational costs. Quaise's approach takes a different route. Instead of relying on conventional mechanical cutting at the deepest sections of a well, its system uses high-frequency electromagnetic energy to interact with and break down rock. The millimeter waves are generated by a gyrotron, making the high-power source a central component of the drilling system. The technology traces its origins to more than a decade of research at the Massachusetts Institute of Technology. Quaise has sought to apply advances in high-power millimeter-wave technology to geothermal drilling, with the objective of unlocking geothermal resources that conventional drilling technologies cannot economically reach. The potential significance extends beyond conventional geothermal development. Superhot geothermal resources could provide access to very high-temperature energy stored deep within the Earth's crust. If these resources can be accessed commercially, they could expand the geographic and technical potential of geothermal power. KF's gyrotron experience. Kyoto Fusioneering brings extensive experience in the development and manufacture of gyrotron systems. The company designs and builds gyrotrons operating across frequencies ranging from 28 GHz to 236 GHz, including systems capable of operating at multiple frequencies. Its technology has already been deployed in major fusion research facilities. KF has delivered two dual-frequency gyrotrons for the United Kingdom Atomic Energy Authority's MAST Upgrade program, as well as a 1 MW system for Tokamak Energy's ST40 fusion device. The company has also supplied the first of two gyrotron units for the U.S. Department of Energy's DIII-D National Fusion Facility. In addition, KF has completed the design of a 1.5 MW to 2 MW-class gyrotron intended for the Wendelstein 7-X stellarator and ASDEX Upgrade at the Max Planck Institute for Plasma Physics. These projects have helped KF establish capabilities in high-power millimeter-wave generation, engineering and system integration. Those capabilities are now being extended into geothermal drilling through the Quaise order. Continuous operation brings a New requirement. One of the most important distinctions between the geothermal application and many current fusion experiments is operating duration. Many existing experimental fusion facilities operate plasma heating systems in pulses that may last only seconds. A drilling system, by contrast, must operate continuously while the well is being advanced. The millimeter-wave source therefore needs to support sustained operation for extended periods. The gyrotron KF is supplying to Quaise has been specified and designed around continuous operation. This requirement creates engineering challenges that differ from those encountered in pulsed fusion experiments, while also providing experience that could ultimately be valuable to future commercial fusion power plants. Future fusion power stations will require heating and supporting systems capable of substantially longer operating periods than many present-day experimental facilities. Consequently, developing hardware for continuous operation in another commercial energy application can provide relevant experience for the eventual deployment of fusion systems. Support from Japan's Deep-Tech programs. KF's work on continuous-operation gyrotrons for geothermal applications has also received support through Japan's energy technology development programs. In September 2024, KF was selected for the New Energy and Industrial Technology Development Organization's Deep-Tech Startups Support Program in the Green Transformation field. NEDO is Japan's national agency responsible for supporting research and development in energy, industrial technology and related areas. Under the program, KF has been developing high-power, continuous-operation gyrotrons and associated power supplies for superhot geothermal applications. The Quaise order represents the first commercial outcome of that development work. The project therefore provides KF with an opportunity to apply its fusion-derived technology in an operating environment outside the fusion sector while continuing to advance equipment that could have applications in both industries. Expanding the gyrotron supply chain. The commercial development of gyrotrons is also relevant to the broader fusion industry. As fusion projects move from experimental research toward commercial power generation, demand for specialized plasma-heating equipment is expected to increase. "The gyrotron supply chain has to grow well beyond its current size to meet what fusion will need, and it has to grow before that demand arrives, not after," said Takashi Imai, Group CEO of the Plasma Heating Group at Kyoto Fusioneering. "KF is investing in that capability now and taking commercial work that builds it. This work with Quaise is an important part of that." Orders from non-fusion customers can help suppliers develop manufacturing capacity, engineering expertise and quality systems while commercial fusion projects are still progressing. For companies operating in specialized technology markets, expanding into adjacent applications can also provide opportunities to validate equipment under different operating conditions. Potential for Japan's geothermal resources. Japan has one of the world's largest geothermal resource bases, although a significant portion remains undeveloped. Deep, high-temperature resources present particular technical challenges because reaching them economically requires drilling technologies capable of operating under demanding conditions. Japan's Ministry of Economy, Trade and Industry and NEDO are supporting research into superhot geothermal resources, Enhanced Geothermal Systems and closed-loop geothermal technologies through initiatives including the Green Innovation Fund. For Kyoto Fusioneering, the Quaise project creates a pathway to apply its experience in fusion technology to the geothermal sector while contributing to the development of advanced drilling equipment. Lessons from the project could also support future geothermal deployments in Japan and other markets where deep geothermal resources remain difficult to access. The order illustrates how technology developed to address the extreme requirements of fusion can find applications in other energy sectors. By combining KF's gyrotron expertise with Quaise's millimeter-wave drilling technology, the companies are pursuing a method designed to overcome some of the limitations associated with conventional deep geothermal drilling and potentially expand access to high-temperature geothermal energy.
Kyoto Fusioneering has received an order from Quaise Energy for a gyrotron system to be used in millimeter wave drilling technology for superhot geothermal development. The agreement was signed on 17 August 2026. This marks the first order KF's plasma heating business has received from a customer outside the fusion sector. Quaise's drilling system uses millimeter waves generated by a gyrotron to ablate rock, aiming to reach depths and temperatures that conventional mechanical drilling cannot access economically. The gyrotron KF is supplying is designed for continuous operation, distinguishing it from pulsed systems used in current fusion experiments. KF designs and builds gyrotrons across frequencies from 28 GHz to 236 GHz. The order represents the first commercial outcome of KF's work under NEDO's Deep-Tech Startups Support Programme, which began in September 2024.
DOE awards $99 million to 21 geothermal projects for field tests and exploration drilling. The U.S. Department of Energy (DOE) announced more than $99 million for 21 projects selected to advance geothermal energy development across the United States. The selection was made on September 21, 2026. The announced amount, up to $99 million, represents a ceiling for the first budget period and does not constitute a final award or disbursement. The selection opens a negotiation phase between the DOE and project developers. Actual funding would depend on appropriated funds and on each project reaching defined milestones. Two tracks: field tests and exploration drilling. Five projects will conduct field-scale enhanced geothermal systems (EGS) tests to validate technologies under real-world conditions, while 16 additional projects will conduct exploration drilling to identify and characterize promising next-generation geothermal resources. The split reflects the agency's stated goal of proving that next-generation geothermal technology works at scale while also building a pipeline of confirmed resource sites for future commercial development. Who was selected and where. Among the recipients is Fervo Energy, which was selected for two projects: an enhanced geothermal systems demonstration in Idaho and exploration drilling in Nevada. Quaise Energy, Zanskar Geothermal, XGS Energy, and Invenergy are also among the selectees. Three Utah-based firms and institutions, Zanskar Geothermal and Minerals, AlterG Resources, and the University of Utah, made the cut, though their projects are deployed at out-of-state sites, including locations in Hidalgo County, New Mexico; Pershing and Churchill Counties, Nevada; and the Dixie Valley West geothermal field, also in Nevada. Quaise Energy is developing a millimeter-wave technique that uses directed energy to melt and vaporize rock rather than relying on conventional mechanical drilling. Zanskar Geothermal and Minerals was selected to design, drill, and hydraulically stimulate a short-lateral horizontal injection well at the Lightning Dock Geothermal field in Hidalgo County, New Mexico, to deliver engineered pressure support to an actively producing hydrothermal reservoir and capture heat from impermeable, hot rock in the vicinity of the hydrothermal system. The program is not limited to enhanced geothermal systems. The 16 exploratory drilling projects also cover conventional hydrothermal resources, where heat and underground fluids occur naturally, as well as next-generation geothermal resources. Public data to guide future investment. Data generated by these projects will be publicly available through DOE's Geothermal Data Repository, giving industry, researchers, and other stakeholders access to information from the field tests and geothermal exploration activities. That data-sharing requirement is intended to reduce subsurface uncertainty and lower the commercial risk that has historically slowed private capital deployment into geothermal exploration. The repository push follows record commercial interest in the sector: geothermal developers invested record amounts in federal lease sales in 2025 and 2026, and a June 2026 Bureau of Land Management sale of 152,381 acres in New Mexico generated $16.6 million, a new single-sale record. Wider industry backdrop. The DOE's selection comes as geothermal energy has attracted growing interest from investors and energy companies as a source of around-the-clock power. The DOE's portfolio is designed to accelerate domestic geothermal development by reducing the technical and financial barriers that have kept the resource underexploited outside of established hotspots in California, Nevada, and Utah. GCN has previously reported on the world's largest enhanced geothermal power purchase agreement at 396 megawatts. DOE Under Secretary of Energy Kyle Haustveit said the awards will "empower American innovators to unlock the tremendous geothermal resources beneath our feet." The 21 selections follow a series of related federal moves in September 2026 alone, including an extended EGS test at Utah FORGE and a separate $1.2 million workforce prize for geothermal heat pump training programs. The full project list and fact sheet are available at the DOE's official announcement. Hugo Rojas is the editor of GCN. With a Master of Science in Engineering, he specializes in technology, data, and science, and brings a human-centered perspective informed by psychology.
Quaise Energy has been selected by the US Department of Energy to receive up to $25 million in funding for ultra-high temperature geothermal development. The funding will support the Obsidian Project in central Oregon, the world's first commercial ultra-high temperature geothermal plant. The grant will fund analysis of drilling, stimulation, and flow results from the first two wells to optimise a third well. The three-well configuration targets reservoir temperatures above 300°C and is designed to demonstrate gross power generation capacity exceeding 25 megawatts. The Obsidian Project is expected to deliver power to the Pacific Northwest grid by 2030, with potential expansion to one gigawatt. The first phase aims to generate over 50 megawatts by 2030. The selection follows Quaise's $180 million Series B funding round completed in August 2024, led by Nabors Industries and Prelude Ventures.
Quaise Energy Selected for Up to $25 Million in U.S. Department of Energy Support to Advance World's First Commercial Superhot Geothermal Power Plant TMCnet News [September 22, 2026] | / | Quaise Energy Selected for Up to $25 Million in U.S. Department of Energy Support to Advance World's First Commercial Superhot Geothermal Power Plant Quaise Energy, a leading developer of utility-scale superhot geothermal energy, today announced that it has been selected by the U.S. Department of Energy (DOE) for up to $25 million in funding under the Next-Generation Geothermal Field Tests and Geothermal Resource Characterization and Confirmation funding opportunity. The support brings the U.S. closer to commercializing superhot Enhanced Geothermal Systems - technology that could unlock firm, clean power from hot rock beneath virtually any geography in the country. The funding will advance Project Obsidian, the world's first commercial superhot geothermal power plant, in Central Oregon. It will support analysis of the drilling, stimulation, and flow results of the first two wells to optimize a third well at the Obsidian site. The three-well configuration is targeting average reservoir temperatures of over 300°C and is designed to demonstrate more than 25 megawatts of gross electric power capacity. The DOE funding will also enable Quaise and its research partners to collect, analyze and share field data from drilling, stimulation and flow testing - establishing a replicable template to help unlock further EGS development. "This DOE support is a recognition of what we are building at Quaise and the progress we are making in the field, including the confirmation well currently being drilled at Project Obsidian," said Carlos Araque, CEO and President of Quaise Energy. "Our ambition has always been to make superhot geothermal a commercial reality, and Project Obsidian is where we first deliver on that promise." Project Obsidian, currently under construction south of Bend, Oregon, sits on one of the most extensively studied geothermal resources in the United States. The project is expected to deliver first power to the Pacific Northwest grid in 2030 with potential for expansion up to one gigawatt of electricity. Learnings from these three wells will directly inform subsequent drilling at the site. Using EGS and advanced drilling techniques, Quaise expects to drill the hottest well in the Western Hemisphere at Project Obsidian reaching temperatures over 400°C - above the range of current commercial geothermal projects. Phase one of the project is expected to produce more than 50 megawatts of electric power by 2030. The full value of the proposed DOE funding is subject to completion of award negotiations. The project team includes experts from Pacific Northwest National Laboratory, Lawrence Berkeley National Laboraory, and Oregon State University. The selection follows Quaise's close of $180 million in Series B financing in August 2026, led by Nabors Industries and Prelude Ventures, with participation from JERA Co., Inc. and Idemitsu Kosan, to fund Project Obsidian. About Quaise Energy Quaise Energy is unlocking the Earth's deep heat to deliver clean, reliable, baseload energy at scale-almost anywhere in the world. As both a technology innovator and project developer, Quaise builds and operates solutions that harness superhot geothermal energy far below the surface, enabling power generation that can rival the output of today's most efficient fossil fuel and nuclear plants. With its millimeter wave drilling technology, developed after more than a decade of research at the Massachusetts Institute of Technology (MIT), Quaise's mission is to make superhot geothermal a backbone of the modern energy system, offering affordable, zero-carbon power and true energy independence for communities and nations everywhere. https://www.quaise.com/ Forward Looking Statement: This press release contains forward-looking statements, including statements regarding the Company's future financial performance, business plans, and expectations. These forward-looking statements are based on assumptions deemed reasonable by the Company at the time they were made. There is no assurance that such statements will prove accurate, and actual results may differ materially from those expressed or implied herein due to various risks, uncertainties, and other factors. Readers are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the date of this press release and are based on the aforementioned assumptions. The Company assumes no obligation to update or revise any forward-looking statements, whether as a result of new information, future events, or otherwise, except as may be required by applicable law. Quaise.com | LinkedIn | X | Instagram | Facebook | YouTube View source version on businesswire.com: https://www.businesswire.com/news/home/20260922715014/en/ [ Back To TMCnet.com's Homepage] |
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Industries
Company Size
51-200
Company Stage
Grant
Total Funding
$298M
Headquarters
Cambridge, MA
Founded
2018
Find jobs on Simplify and start your career today
Don't see your dream role? Check out thousands of other roles on Simplify.Browse all jobs