Houston cleantech startup secures $134M to develop ‘superhot’ geothermal plant

deep round

A rendering of a Quaise Energy geothermal plant. Rendering via quaise.com

Houston-based Quaise Energy, a producer of utility-scale geothermal power, raised $134 million in a Series B round to advance its “superhot” geothermal power plant.

Climate-focused San Francisco-based investment firm Prelude Ventures led the round, with participation from JERA Co., Japan’s largest power generation company, and Idemitsu Kosan, one of Japan’s largest energy companies. Nearly all existing investors, including cleantech-focused investment firm Safar Partners, participated in the round.

“We have backed Quaise since the beginning because we believed accessing superhot rock would unlock geothermal energy at a scale the world has never seen,” Mark Cupta, managing director at Prelude Ventures, said in a press release.

The startup expects more equity and debt deals to close “imminently.” Quaise has raised $230 million since its founding in 2018.

Quaise says some of the fresh funding will go toward building the world’s first commercial-scale “superhot” geothermal power plant —Project Obsidian in central Oregon. In addition, Quaise is earmarking money for continued development and commercialization of its millimeter-wave drilling system toward depths exceeding 5 kilometers (about 16,400 feet).

Quaise uses a millimeter-wave drilling system developed at the Massachusetts Institute of Technology to remove rock at depths and temperatures that aren’t economically feasible with conventional drilling. With this technology, Quaise can reach rock at temperatures of around 570 degrees to 930 degrees in most places worldwide, enabling construction of geothermal systems that rival fossil fuels and nuclear energy in power density and that rival renewables in cost.

“Our ambition is to power civilization with Earth's most compelling energy source. This round takes us from field-proven technology to first commercial revenues,” Carlos Araque, co-founder, president and CEO of Quaise, added in the release.

Quaise has demonstrated the capability of its millimeter-wave drilling system at its Central Texas test site, drilling more than about 330 feet through granite in 2025—the first time the technology penetrated basement rock at full scale in the field. The company is approaching a depth of about 3,300 feet at the same site.

Construction of Project Obsidian is underway at Oregon’s Deschutes National Forest. The project, which has the potential to generate gigawatt-scale power, is slated to deliver electricity to the Pacific Northwest grid by 2030.

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Quaise Energy is developing Project Obsidian, a superhot geothermal plant in central Oregon. Rendering via quaise.com.

Houston cleantech startup seeks $200M for superhot geothermal plant

seeing green

Houston-based Quaise Energy is looking to raise $200 million to support the development of a 50-megawatt superhot geothermal plant in Oregon.

The company is seeking $100 million in Series B funding, plus an additional $100 million from grants, debt and project-level finance, a representative from the company tells Energy Capital. Axios first reported the news late last month.

Quaise specializes in terawatt-scale geothermal power. It is known for its millimeter-wave drilling technology, which was developed at MIT.

The company's Project Obsidian development in central Oregon will combine conventional drilling with its millimeter-wave technology. Quaise says the project, targeted to come online in 2030, could be the first commercial plant to operate in superhot rock, a more efficient and abundant resource, but one that requires more advanced and durable drilling technology.

Quaise says Obsidian would initially generate 50 megawatts of "always-on" power and would be designed to add 200 megawatts as additional wells are developed. A power-purchase deal has already been signed for the initial 50 megawatts with an undisclosed customer.

A representative from the company says Quaise would also use the funding to continue advancing its millimeter-wave technology and prepare it for commercialization.

Last year, the company drilled to a depth of about 330 feet using its millimeter-wave technology at its field site in Central Texas.

“Our progress this year has exceeded all expectations,” Carlos Araque, CEO and president of Quaise Energy, said at the time. “We’re drilling faster and deeper at this point than anyone believed possible, proving that millimeter-wave technology is the only tool capable of reaching the superhot rock needed for next-generation geothermal power. We are opening up a path to a new energy frontier.”

Canary Media reports that Quaise plans to drill to nearly 3,300 feet later this year and to deploy its millimeter-wave technology at its power plant in 2027.

Quaise raised $21 million in a Series A1 financing round in 2024 and a $52 million Series A in 2022. Major investors include Prelude Ventures, Safar Partners, Mitsubishi Corporation, Nabors Industries, TechEnergy and others.

Quaise was one of eight Houston-area companies to appear on Time magazine and Statista’s list of America’s Top GreenTech Companies of 2025.

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Telsa eyes Houston area for $10 billion solar manufacturing plant

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Electric vehicle and clean energy company Tesla is considering building a new $10.1 billion solar cell manufacturing facility in Fort Bend County, according to documents filed with the Texas Comptroller’s Office.

If approved, the plant, called Project Sun City, would be located on a 3,050-acre site off FM 762 and FM 1994 in Richmond, Texas. Tesla aims to finish construction in 2028, with the plant being operational by early 2029.

The plant will manufacture photovoltaic (PV) solar cells and modules that can convert sunlight into electricity. PV Magazine reports that the facility is "the largest single manufacturing investment Tesla has proposed on paper."

Advisory and consulting firm Kroll submitted the documents to the Texas Comptroller of Public Accounts and noted if an agreement regarding tax incentives isn't reached, the project will exit Texas.

Tesla has requested credits under the Jobs, Energy, Technology, and Innovation (JETI) Act. The incentive program aims to attract large, capital-intensive economic development projects by lowering the property taxes an entity must pay over 10 years if it meets requirements related to job creation and investment. For example, pharmaceutical giant Bristol Myers Squibb Co. recently announced that its forthcoming $2.3 billion Houston-area manufacturing site is a qualified project under the JETI program.

Kroll predicts that the facility would create 9,712 new full-time jobs, over 1,100 construction jobs and billions of dollars in future property tax revenue, the documents show. Additionally, it says the project will spur $1.1 billion in local business expenditures and that Texas would increase its GDP by approximately $107 billion as a result of the project activities.

Tesla opened its $200 million Megafactory in Brookshire, Texas, last year. The company is continuing its goal to deploy 100 gigawatts of solar manufacturing in the U.S before the end of 2028. According to the U.S. Energy Information Administration, 100 gigawatts is equal to about 8 percent of the country's power grid capacity.

Houston researchers land $10M grant to study how climate change drives disease threats

climate health research

Researchers from Rice University, Baylor College of Medicine and the University of Texas School of Public Health have received a $10 million grant to support research and public education on how climate change is linked to public health.

The funding comes from North Carolina-based Burroughs Wellcome Fund and is known as the organization’s Climate + Health Excellence (CHEX) award. It will be used over the next five years to launch the new FORECAST initiative, led by Rice professors and co-investigators Sylvia Dee and Joseph Campan.

FORECAST will “study how a rapidly changing environment and weather drive the emergence and expansion of deadly pathogens in human populations,” according to a release from Rice.

“This grant supports novel research linking climate change projections to health care solutions while simultaneously ensuring the next generation of scientists, leaders and policymakers have the training to assess and respond to the climate change risks that we already know are increasing every year,” Dee said in the release.

The funding will go toward a variety of new initiatives and centers.

At Rice, the funding will help launch the new Center for Climate and Environmental Health, as well as cross-campus multidisciplinary collaborations, seed grants, postdoctoral and graduate positions, and more, according to the university.

The grant will also support the statewide “Middle to Medical” climate-health educational program for youth. The program will focus on teaching how pathogens spread and how climate change plays a role in the process.

“FORECAST will prepare youth across Texas to make informed health decisions that protect themselves and their families and communities from extreme weather and disease-related risks,” Nancy Moreno, a professor of education, innovation and technology at Baylor College of Medicine and co-investigator on this grant, added in the release.

Anthony Maresso, professor of molecular virology and microbiology at Baylor College of Medicine, will share expertise in viral pathogen sewage detection that was developed during the COVID-19 pandemic; while Eric Boerwinkle, dean of the UT School of Public Health, will share insights from the Texas Wastewater Environmental Biomonitoring Network, which tracks disease-causing viruses and bacteria by testing wastewater weekly at Texas sites.

“Hotter days, bigger storms, new disease threats — Texas’s future demands preparation,” Boerwinkle added in the release. “With support from the Burroughs Wellcome Fund, the FORECAST team is helping Texas detect threats earlier and respond faster, saving lives and strengthening our economy.”

EV surge could shutter 40 refineries by 2040, Wood Mackenzie report warns

ev outlook

The rise of electric vehicles could spell trouble for Houston’s oil and gas sector, a new report suggests. But the oil and gas industry stands to benefit from potential sluggishness in U.S. adoption of EVs.

If worldwide EV adoption rises as expected, global oil demand could fall by five million barrels per day by 2040, accelerating the closure of about 40 oil refineries, says the report, published by energy research and consulting firm Wood Mackenzie. The firm’s North American hub is in Houston.

Those closures might spell trouble for refinery operators with a sizable Houston-area presence, including BP, ExxonMobil, Marathon, Saudi Aramco, and Valero. In 2025, the five companies collectively earned roughly $33 billion from downstream operations, including refineries. One caveat: Each company assigns a different definition to “downstream.”

Refineries in Organization for Economic Co-operation and Development (OECD) countries, including the U.S. but excluding Middle Eastern heavyweights, “are most at risk due to their high energy costs and carbon prices,” the Wood Mackenzie report says.

On the flip side, an abundant U.S. oil supply means American drivers have less of an incentive to switch from traditional cars to electric vehicles, despite stubbornly high fuel prices, according to the report.

Wood Mackenzie predicts EVs will account for 20 percent of the U.S. personal and commercial vehicle fleet in 2040, up from three percent in 2025. That compares with a global forecast of 25 percent in 2040, up from 4 percent last year.

Another U.S. roadblock to EV adoption cited in the report: the country’s relative lack of advanced battery manufacturing.

“Without advanced battery technologies, the U.S. auto sector is at risk of ceding its home market to non-Chinese EVs and falling behind competitors internationally,” the report says.

Furthermore, according to the report, Chinese investment in EV manufacturing in the U.S. probably will remain a no-go and tariffs on Chinese EV imports likely won’t be lifted, even if Democrats resurrected EV incentives following a White House win in 2028.

“Competition among EV manufacturers in international markets will only intensify,” the report notes. “Companies that can offer competitive products in high-growth markets will be best positioned for long-term success.”

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