the view from heti

New initiative to drive efforts to deploy first advanced small modular nuclear reactor

The International Energy Agency has determined that nuclear energy production would need to increase 80 percent globally by 2040 to stay on track with sustainability targets, including international climate goals. Photo via houston.org

A new initiative from X-energy, bolstered by Dow, is powering low-carbon emissions energy. X-energy, LLC is a nuclear reactor and fuel design engineering company. The company was selected by the U.S. Department of Energy in 2020 to receive up to $1.2 billion under the Advanced Reactor Demonstration Program Cooperative Agreement in federal cost-shared funding to develop, license, build, and demonstrate an operational advanced reactor and fuel fabrication facility within a 10-year span.

In 2022, X-energy announced a $50 million joint development agreement with multinational chemical giant Dow to demonstrate the first-grid advanced nuclear reactor at an industrial site. As part of the agreement, Dow is now a sub-awardee under X-energy’s ARDP with the DOE. At the time of the announcement, Dow also brought to light its intention to take a minority equity stake in X-energy.

Last month, the University of Texas at Austin Cockrell School of Engineering hosted a panel discussion with Governor Abbott, he noted “Texas is the energy capital of the world” Abbott said, “When you look at the fact that Texas is the fastest-growing state with regard to population and businesses, you know that our demand for power is only going to increase.” Abbott also said, “We’re going to be studying and evaluating the reliability, the safety of nuclear power. If it passes all the tests, we will be looking to dramatically expand nuclear power in the state of Texas for the primary purpose of providing reliable, dispatchable power to our grid.”

The International Energy Agency has determined that nuclear energy production would need to increase 80 percent globally by 2040 to stay on track with sustainability targets, including international climate goals.

Dow and X-energy are slated to install an Xe-100 high-temperature, gas-cooled reactor plant at one of Dow’s sites in Seadrift, between Corpus Christi and Houston, which produces more than 4 million pounds each year of materials used in packaging, footwear, wire and cable insulation and solar cell membranes. It also is expected to reduce the plant’s emissions by 440,000 metric tons of carbon dioxide equivalent annually, as steps by Michigan-based Dow toward achieving goals of carbon neutrality by 2050 and reducing carbon emissions by 30 percent by 2030.

Jim Fitterling, Dow chairman and CEO, noted in a press release issued in early March, “The utilization of X-energy’s fourth generation nuclear technology will enable Dow to take a major step in reducing our carbon emissions while delivering lower carbon footprint products to our customers and society,” he said. “The collaboration with X-energy and the DOE will serve as a leading example of how the industrial sector can safely, effectively and affordably decarbonize.”

X-energy will install four of its Xe-100 reactors at the coastal site with each unit designed to produce 80 megawatts of energy fueled by the company’s baseball-sized uranium fuel kernels, encased in layers of pyrolytic carbon, silicon carbide and porous carbon. The reactors will partly be constructed by Fort Worth-based Paragon Energy Solutions, LLC, a supply chain management company that focuses its efforts on tackling the nuclear industry’s most difficult challenges. The Xe-100 modular reactor is one of two designs selected by the DOE to receive $80 million each of initial cost-shared funding to build an advanced reactor demonstration plant that can be operational within seven years.

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This article originally ran on the Greater Houston Partnership's Houston Energy Transition Initiative blog. HETI exists to support Houston's future as an energy leader. For more information about the Houston Energy Transition Initiative, EnergyCapitalHTX's presenting sponsor, visit htxenergytransition.org.

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A View From HETI

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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