climatetech heroes

Carbon capture co. with Houston presence receives prestigious sustainability recognition

Carbon Clean has secured a prominent global recognition. Photo via CarbonClean.com

A United Kingdom-headquartered carbon capture business with a growing presence in Houston has received a distinguishing honor that recognizes climatetech leaders.

Carbon Clean, which has expanded to the United States by way of Houston, has received the Sustainable Markets Initiative 2023 Terra Carta Seal. The distinguishment recognizes global companies that are helping to create a nature-positive future for the climate. This is part of the Sustainable Markets Initiative’s larger mandate to help provide a framework to accelerate the transition to a sustainable future by placing the planet and people first.

“The Sustainable Markets Initiative’s Terra Carta Seal recognises those companies which are taking great strides in delivering real-world outcomes," Jennifer Jordan-Saifi, CEO of Sustainable Markets Initiative, says in the release. "As we stand on the eve of COP28, public, private sector, and philanthropic actors will come together at the inaugural Business and Philanthropy Climate Forum to bridge the gap between ambition and action. It isexamples exemplified by the 2023 Terra Carta Seal winners that are helping to inspire and lead the way.”

The Terra Carta Seal was launched in 2021 during COP26 by His Majesty King Charles III when he was the Prince of Wales. An international panel of experts from the environmental, business, political and philanthropic worlds chose 17 global companies for the honor.

“We are honored to be recognized by the Sustainable Markets Initiative for our contribution to the global transition to net zero, “ says Aniruddha Sharma, chair and CEO of Carbon Clean, in a news release. “Carbon Clean’s mission is simple: to deliver cost-effective, space-saving, modular carbon capture technology, enabling hard-to-abate industries to decarbonise at scale.”

Carbon Clean aims to revolutionize industrial carbon capture with its CycloneCC, which solves large barriers to widespread adoption of industrial carbon capture: cost and space.The technology of CycloneCC will be key in the company’s goal to achieve net zero by 2050.

Carbon Clean develops carbon capture technology for customers such as cement producers, steelmakers, refineries, and waste-to-energy plants. The company bills its offering as the “world’s smallest industrial carbon capture technology.” CycloneCC can reduce the cost of carbon capture by as much as 50 percent with a footprint that’s 50 percent smaller than traditional carbon capture units, according to Carbon Clean. The UK company established its Houston location this year.

Last month, CycloneCC was selected by ADNOC for a carbon capture project at Fertiglobe’s plant located in the Ruways Industrial Complex, Abu Dhabi. The project is the first deployment of a 10 tonnes per day CycloneCC industrial unit.

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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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