new hire

Deloitte names new Houston-based leader of energy, chemicals practice

Teresa Thomas was named vice chair and national sector leader for energy and chemicals at Deloitte. Photo via LinkedIn

Deloitte announced a new local leader to oversee energy and chemicals nationally.

Teresa Thomas was named vice chair and national sector leader for energy and chemicals at Deloitte. Based in Houston, she will also serve as an advisory partner and leader in Deloitte & Touche LLP's Risk & Financial Advisory energy and chemicals practice.

She will lead the strategic direction of Deloitte's energy and chemicals practice and drive program growth in the sector. Thomas succeeds Amy Chronis, partner at Deloitte LLP, who will continue to serve within the energy and chemicals practice until her retirement in June 2024.

"I am fortunate to have worked in the energy and chemicals industry for most of my career, and I'm honored to continue working with companies that are playing a pivotal role in powering progress and purpose," Thomas says in a news release. "Our industry is at the epicenter of the energy transition that can fuel tremendous potential for society, and I'm excited to be leading during this important and transformational time."

Last year, Chronis announced her retirement from Deloitte, and the company named Melinda Yee as the incoming Houston managing partner at Deloitte, a role Chronis held in addition to the title of vice chair and US energy and chemicals leader. Chronis is slated to retire in June 2024, and Yee's new role became effective this month.

Thomas has served in a variety of leadership roles and has more than 20 years of experience in the energy industry. She is used to serving multiple large clients, and developing deep C-suite and board relationships, as well as advising on future success for the business, and the industry as a whole. She was named as one of Hart Energy's 25 most influential women in energy in 2023, and is the vice chair and board member of The Rose, which is a nonprofit women's breast health organization in Southeast Texas.

"Teresa has played an integral role as strategic advisor to many of our valued energy and chemicals clients as they navigate significant transition, and her leadership, enthusiasm and vision will help shape the future of our practice," Stanley Porter, vice chair at Deloitte and U.S. energy, resources and industrials leader, says in a news release. “I am confident that Teresa brings the right vision, experience and relationships to further lead and grow the energy and chemicals sector as it experiences critical transformation and convergence."

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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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