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DOE taps Houston company's facility to advance carbon capture, storage infrastructure

Calpine’s Baytown Decarbonization Project will capture around two million metric tons of carbon dioxide for permanent sequestration each year. Photo via LinkedIn

Earlier this month, a Houston power company was selected by the Department of Energy's Office of Clean Energy Demonstrations for a cost-sharing agreement for a commercial-scale carbon capture and storage project.

Calpine's Baytown Decarbonization project is projected to capture and store about two million metric tons of carbon dioxide each year. The Baytown Energy Center is an existing 896-megawatt natural gas combined heat and power facility, according to a news release, "that provides steam and power to the adjacent Covestro chemicals manufacturing facility as well as power to the Texas electric grid."

The project will add post-combustion carbon capture equipment that will reduce the emissions intensity of two of its three combustion turbines at a design capture rate of 95 percent. In addition to the Baytown project, the DOE also selected Calpine’s carbon capture project at its Sutter Energy Center in California.

“We are very pleased and honored that the DOE has recognized the quality of this project and the strength of Calpine’s CCS program,” Thad Hill, CEO of Calpine Corp., says in the release. “We are looking forward to working with the DOE to finalize the cost-sharing agreement and with our other stakeholders to advance the development of the Baytown Decarbonization Project. Carbon capture is an important technology for decarbonizing the electricity sector and the economy. Calpine is very grateful for the commitment and support for the project by our stakeholders.”

The Baytown Decarbonization Project is being developed collaboratively with local stakeholders in East Houston. In addition to expanding full-time job opportunities, Calpine will enhance workforce development programs, target procurement with diverse and small business enterprises, and work with local schools and other organizations.

"This is a critical step towards decarbonizing Calpine’s facility, which is located on our Covestro Baytown site,” Demetri Zervoudis, Covestro head of operations for North America and Baytown site general manager, says in the release. “Carbon capture and storage technology is an important tool for the chemical industry to reduce carbon emissions, and it is encouraging to see Calpine at the forefront of this transition.”

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A View From HETI

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

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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