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ExxonMobil’s Low Carbon Solution president makes inaugural TIME100 Climate list

The Houston-based executive makes the list of along with John Kerry, Bill Gates, and more. Photo via exxonmobil.com

A Houston energy executive has made the cut on an inaugural ranking of top climate action leaders.

TIME magazine’s first-ever TIME100 Climate list, which highlights “100 of the world’s most influential leaders driving climate action in business,” and ExxonMobil’s president of Low Carbon Solution business Dan Ammann has made it onto the list.

“The real credit goes to the ExxonMobil Low Carbon Solutions team for the progress we’ve made so far,“ Amann says in a LinkedIn post. “It’s great to see the world recognizing that ExxonMobil has a major role to play in accelerating the world’s path to net zero.”

The list also includes John Kerry, the U.S. Special Presidential Envoy for Climate; Bill Gates, founder of Breakthrough Energy Ventures; and others.

Some of ExxonMobil’s recent highlights include the announcement of a plan to become a leading supplier of lithium to support electric vehicles, reaching a new milestone in the volume of CO2 emissions that the company agreed to store for industrial customers along the U.S. Gulf Coast – up to 5 million metric tons per year, expanded ability to further reduce emissions by acquiring the largest CO2 pipeline network in the U.S.C, and working on building the world’s largest low-carbon hydrogen plant in Baytown, which is outside of Houston.

“It’s great to be included in this prestigious list and I’m proud of the team’s efforts to advance real solutions that will help reduce the world’s emissions,” Ammann says in ExxonMobil's news release.

He joined ExxonMobil in 2022 following a career in Silicon Valley as CEO of Cruise, as well as stops in Detroit as president of General Motors and on Wall Street when he was managing director at Morgan Stanley.

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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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