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

Fervo Energy claimed a top 10 spot on Time magazine and Statista’s new list of America’s Top GreenTech Companies of 2025. Photo via Getty Images.

The accolades keep rolling in for Houston-based Fervo Energy, a producer of geothermal power.

Fervo lands at No. 6 on Time magazine and Statista’s new list of America’s Top GreenTech Companies of 2025. The ranking recognizes sustainability-focused companies based on factors such as impact, financial strength, and innovation.

Time notes that Fervo broke ground in 2023 in Utah on what the company claims will be the world’s largest geothermal plant. The plant is scheduled to start supplying carbon-free electricity to the grid next year and to reach its 400-megawatt capacity in three years.

“Technologies like this only make a difference if we deploy them at large-scale in a way that can reduce carbon emissions and increase the reliability of the grid,” Fervo CEO Tim Latimer told Time in 2023.

The startup was named North American Company of the Year by research and consulting firm Cleantech Group for 2025. Fervo topped the Global Cleantech 100, Cleantech Group’s annual list of the world’s most innovative and promising cleantech companies.

Last year, Fervo also made Time’s list of the 200 Best Inventions of 2024. Fervo was recognized in the green energy category for its FervoFlex geothermal power system.

Founded in 2017, Fervo is now a unicorn, meaning its valuation as a private company exceeds $1 billion. The startup’s valuation is estimated at $1.4 billion. According to PitchBook data, the company raised $634 million in the fourth quarter of 2024.

In all, eight Houston-area companies appear among the top 250 greentech companies ranked by Time and Statista. Other than Fervo, they are:

  • No. 43 Lancium Technologies, an energy storage and distribution company
  • No. 50 Solugen, a producer of sustainable chemicals.
  • No. 56 Quaise Energy, which specializes in terawatt-scale geothermal power.
  • No. 129 Plus Power, a developer, owner and operator of battery storage projects.
  • No. 218 Dream Harvest, which promotes sustainable vertical farming.
  • No. 225 Cemvita, which uses synthetic biology to convert carbon emissions into bio-based chemicals.
  • No. 226 Syzygy Plasmonics, which decarbonizes chemical production.
Vermont-based BETA Technologies claimed the No. 1 spot. The company manufactures electric aircraft.

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