Fervo Energy has claimed the No. 1 spot on Time magazine’s and Statista’s 2026 list of America’s Top GreenTech Companies. Photo via fervoenergy.com

The accolades keep coming for Houston-based geothermal energy company Fervo Energy.

Fervo sits atop Time magazine’s and Statista’s 2026 list of America’s Top GreenTech Companies. Fervo ranked No. 6 on the list last year.

The ranking honors 250 companies in the U.S. based on their environmental impact, innovation and financial strength. Fervo joins five other Houston-area companies on the list.

  • No. 49 Quaise Energy, an MIT Energy Initiative spinout that’s developing a drilling system designed to convert existing power stations for geothermal power production
  • No. 71 Plus Power, which develops, owns and operates battery energy storage systems
  • No. 98 Utility Global, whose technology enables industrial decarbonization
  • No. 199 Solugen, whose technology converts plant-based feedstocks into carbon-negative chemicals
  • No. 215 Noodoe, which specializes in EV charging stations and software

Fervo says its approach to enhanced geothermal systems (EGS)—including horizontal drilling, AI-enabled drilling and exploration, advanced reservoir engineering, and fiber-optic sensing—demonstrates how validated technology can help deliver reliable zero-emission power.

“By applying drilling technology from the oil and gas industry, we have proven that we can produce 24/7 carbon-free energy resources in new geographies across the world,” Fervo co-founder and CEO Tim Latimer said last year.

Other recent recognitions for Fervo includes:

  • The 2025 Houston Innovation Awards named it Scaleup of the Year
  • MIT Technology Review put Fervo on its 2025 list of the 10 global climatech companies to watch
  • Time named Fervo one of the 100 Most Influential Companies of 2025
  • Fervo was hailed as the Global Cleantech Group 100 North American Company of the Year
  • Fervo was among Congruent Ventures’ and Silicon Valley Bank’s 50 by 2050 companies, all of which are poised to advance global decarbonization over a 25-year span
Just last month, Fervo secured $421 million in debt financing for the construction of its 500-megawatt Cape Station geothermal project in Utah. And in December, the company landed an oversubscribed $462 million Series E round of funding, pushing its valuation to an estimated $1.4 billion. Fervo filed for an IPO earlier this year.
CenterPoint is one of 13 Houston companies on Time's list. Photo via centerpoint.com

7 Houston energy-focused businesses among Time's best midsize companies 2025

new report

Seven Houston-based businesses focused on the energy industry appear on Time magazine and Statista’s new ranking of the country’s best midsize companies.

Time and Statista ranked companies based on employee satisfaction, revenue growth, and transparency about sustainability. All 500 companies on the list have annual revenue from $100 million to $10 billion.

The Houston energy-focused companies on the list are:

  • No. 141 MRC Global. Score: 85.84
  • No. 176 National Oilwell Varco. Score: 84.50
  • No. 266 Nabor Industries. Score: 81.59
  • No. 296 Archrock. Score: 80.17
  • No. 327 Superior Energy Services. Score: 79.38
  • No. 359 CenterPoint Energy. Score: 78.02
  • No. 461 Oceaneering. Score: 73.87
In total, 13 Houston-based businesses appear, with Houston engineering firm KBR topping the Texas businesses that made the list. KBR earned the No. 30 spot, earning a score of 91.53 out of 100. It is joined by these other Houston companies:
  • No. 168 Comfort Systems USA. Score: 84.72
  • No. 175 Crown Castle. Score: 84.51
  • No. 234 Kirby. Score: 82.48
  • No. 332 Insperity. Score: 79.15
  • No. 485 Skyward Specialty Insurance. Score: 73.15

Additional Texas companies on the list include:

  • No. 95 Austin-based Natera. Score: 87.26
  • No. 199 Plano-based Tyler Technologies. Score: 86.49
  • No. 139 McKinney-based Globe Life. Score: 85.88
  • No. 140 Dallas-based Trinity Industries. Score: 85.87
  • No. 149 Southlake-based Sabre. Score: 85.58
  • No. 223 Dallas-based Brinker International. Score: 82.87
  • No. 226 Irving-based Darling Ingredients. Score: 82.86
  • No. 256 Dallas-based Copart. Score: 81.78
  • No. 276 Coppell-based Brink’s. Score: 80.90
  • No. 279 Dallas-based Topgolf. Score: 80.79
  • No. 294 Richardson-based Lennox. Score: 80.22
  • No. 308 Dallas-based Primoris Services. Score: 79.96
  • No. 322 Dallas-based Wingstop Restaurants. Score: 79.49
  • No. 335 Fort Worth-based Omnicell. Score: 78.95
  • No. 337 Plano-based Cinemark. Score: 78.91
  • No. 345 Dallas-based Dave & Buster’s. Score: 78.64
  • No. 349 Dallas-based ATI. Score: 78.44
  • No. 385 Frisco-based Addus HomeCare. Score: 76.86
  • No. 414 New Braunfels-based Rush Enterprises. Score: 75.75
  • No. 431 Dallas-based Comerica Bank. Score: 75.20
  • No. 439 Austin-based Q2 Software. Score: 74.85
  • No. 458 San Antonio-based Frost Bank. Score: 73.94
  • No. 475 Fort Worth-based FirstCash. Score: 73.39
  • No. 498 Irving-based Nexstar Broadcasting Group. Score: 72.71
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This article originally appeared on our sister site, InnovationMap.
Eight Texas companies made it on Time’s Most Sustainable Companies list for 2025. Photo via Getty Images

Houston-area company leads Texas businesses on Time's most sustainable list

Spring-based IT company Hewlett Packard Enterprise leads the list of eight Texas businesses that appear in Time magazine’s and data provider Statista’s World’s Most Sustainable Companies list for 2025.

HPE landed at No. 68, earning a score of 74.36 out of 100.

Time and Statista said the ranking highlights corporate responsibility and promotes sustainable practices.

“In an era marked by significant environmental challenges and social inequalities, it is crucial to recognize and reward companies prioritizing sustainability,” according to an article on Time’s website. “By featuring these leading entities, the ranking sets a benchmark for other businesses, fostering transparency and accountability and encouraging the integration of sustainability into core corporate strategies.”

Time and Statista’s ranking process started with a list of more than 5,000 of the world’s largest, most influential companies based on factors such as revenue and public prominence. They identified the top 500 companies based on more than 20 data points.

The process weeded out non-sustainable businesses, such as those involved in producing fossil fuels, and zeroed in on:

  • External sustainability ratings
  • Availability and quality of sustainability reports
  • Performance regarding environmental and social responsibility measures

HPE is targeting net-zero status across its supply chain by 2040. Working toward that goal, the company predicts its carbon emissions will decrease by 33 percent from 2020 to 2028.

“The climate transition demands collective action across our entire value chain, and I am resolute in my commitment to ensure that HPE plays a central role in showcasing the attainability of net-zero emissions through our technologies and actions,” said Antonio Neri, HPE’s president and CEO.

Among the ways HPE is reducing carbon emissions are:

  • Shipping certain products in bigger bundles
  • Incorporating environmentally responsible design
  • Using more renewable energy
  • Improving energy efficiency in buildings
  • Eventually shifting to an all-electric automotive fleet

Here’s a rundown of the eight Texas-based companies that made the sustainability list, including their global rankings and scores.

  • No. 68 Spring-based Hewlett Packard Enterprise. Score: 74.36
  • No. 81 Dallas-based CBRE. Score: 73.49
  • No. 142 Dallas-based AMN Healthcare Services. Score: 69.8
  • No. 165 Austin-based Digital Realty. Score: 68.64
  • No. 257 Round Rock-based Dell Technologies. Score: 64.89
  • No. 295 Frisco-based Keurig Dr Pepper. Score: 63.25
  • No. 335 Dallas-based Jacobs Engineering. Score: 61.98
  • No. 471 Dallas-based AT&T. Score: 57.28

France-based Schneider Electric claimed the top spot on the global list. The company opened a 10,500-square-foot, state-of-the-art Energy Innovation Center in Houston earlier this year.

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.

8 Houston energy companies land on Time's top greentech list for 2025

top honor

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.
These three Houston innovators have been recognized by Time Magazine. Photos courtesy

3 Houstonians named to prestigious list of climate leaders

who's who

Three Houston executives — Andrew Chang, Tim Latimer, and Cindy Taff — have been named to Time magazine’s prestigious list of the 100 Most Influential Climate Leaders in Business for 2024.

As managing director of United Airlines Ventures, Chang is striving to reduce the airline’s emissions by promoting the use of sustainable aviation fuel (SAF). Jets contribute to about two percent of global emissions, according to the International Energy Agency.

In 2023, Chang guided the launch of the Sustainable Flight Fund, which invests in climate-enhancing innovations for the airline sector. The fund aims to boost production of SAF and make it an affordable alternative fuel, Time says.

Chang tells Time that he’d like to see passage of climate legislation that would elevate the renewable energy sector.

“One of the most crucial legislative actions we could see in the next year is a focus on faster permitting processes for renewable energy projects,” Chang says. “This, coupled with speeding up the interconnection queue for renewable assets, would significantly reduce the time it takes for clean energy to come online.”

At Fervo Energy, Latimer, who’s co-founder and CEO, is leading efforts to make geothermal power “a viable alternative to fossil fuels,” says Time.

Fervo recently received government approval for a geothermal power project in Utah that the company indicates could power two million homes. In addition, Fervo has teamed up with Google to power the tech giant’s energy-gobbling data centers.

In an interview with Time, Latimer echoes Chang in expressing a need for reforms in the clean energy industry.

“Addressing climate change is going to require us to build an unprecedented amount of infrastructure so we can replace the current fossil fuel-dominated systems with cleaner solutions,” says Latimer. “Right now, many of the solutions we need are stalled out by a convoluted permitting and regulatory system that doesn’t prioritize clean infrastructure.”

Taff, CEO of geothermal energy provider Sage Geosystems, oversees her company’s work to connect what could be the world’s first geopressured geothermal storage to the electric grid, according to Time. In August, Sage announced a deal with Facebook owner Meta to produce 150 megawatts of geothermal energy for the tech company’s data centers.

Asked which climate solution, other than geothermal, deserves more attention or funding, Taff cites pumped storage hydropower.

“While lithium-ion batteries get a lot of the spotlight, pumped storage hydropower offers long-duration energy storage that can provide stability to the grid for days, not just hours,” Taff tells Time. “By storing excess energy during times of low demand and releasing it when renewables like solar and wind are not producing, it can play a critical role in balancing the intermittent nature of renewables. Investing in pumped storage hydropower infrastructure could be a game-changer in achieving a reliable, clean energy future.”

Time named its top innovations of the year — and two Houston-born energy transition inventions made the cut. Photo via Getty Images

2 Houston energy transition companies recognized for creating top inventions of the year

bright ideas

Innovations from two Houston energy transition companies have been crowned among the top inventions of the year.

Time magazine’s "200 Best Inventions of 2024" identified top innovations across consumer goods, home health, robotics, sustainability, and two dozen other categories.

Fervo Energy, a provider of geothermal power, was recognized the Green Energy category for its FervoFlex system. As Time explains, the system enables horizontal drilling into hot rock under the earth’s surface and pumping in water to generate hot water and steam. The geothermal energy that’s produced can be stored and released for future use by Fervo customers.

Jack Norbeck, Fervo’s co-founder and chief technology officer, predicts that by 2050, geothermal energy will become “the backbone of the decarbonized energy system.”

In September, Fervo secured a $100 million bridge loan for the first phase of its ongoing Cape Station project in Utah, which is being touted as the world’s largest geothermal energy plant. Slated for completion in June 2026, this initial phase is expected to generate 90 megawatts of renewable energy. Ultimately, the plant is supposed to supply 400 megawatts of clean energy by 2028 for customers in California.

Time also lauded NanoTech Materials among its Manufacturing and Materials honorees for its Insulative Ceramic Particle. This powder can be added to materials like drywall or shingles to improve fire resistance and decrease heat penetration, according to Time. NanoTech’s Wildfire Shield coating for buildings contains the powder. Wildfire Shield prevents damage to materials and harm from noxious smoke.

NanoTech’s other product, Cool Roof Coat, is painted on a building to decrease HVAC use. This year, NanoTech moved into a 43,000-square-foot space in Katy, Texas, and brought on new partners that expanded the company's reach in the Middle East and Singapore.

A third Houston company was also praised byTime is BiVACOR — named to its Experimental category of the list. The full list of this year's top inventions is available online.

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This article originally ran on InnovationMap.

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Houston climatech startup raises $29M funding round​

fresh funding

Houston-based NanoTech Materials has closed a $29.4 million Series A.

The round was led by Austin-based HPI Real Estate & Investments. Houston-based Goose Capital and Austin-based Milliken & Company also participated.

Nanotech has developed its patented Insulative Ceramic Particle (ICP) technology, which reduces heat transfer in buildings and outdoor infrastructure, improving efficiency and safety. It's known for its Cool Roof Coat, Wildfire Shield and Insulative Coat: Cool Touch product lines.

With the new funding, Nanotech plans to scale operations and expand its market reach for its products.

“We’re addressing one of the pressing and urgent challenges facing infrastructure owners today: controlling energy costs and extending asset life,” Mike Francis, CEO and co-founder of NanoTech Materials, said in a news release. “This financing marks a transformative moment for us. It allows us to rapidly scale production and bring our high-performance materials to market faster, while delivering measurable cost savings and redefining what resilience looks like in today’s built environment.”

Nanotech launched in 2020 and was the first company selected for Halliburton Labs. It moved into a 43,000-square-foot space in Katy in 2023. It brought on new partners that expanded the company's reach in the Middle East and Singapore the following year. Its technology was recognized as one of Time magazine's 200 Best Inventions of 2024.

“We were early investors in Nanotech Materials and are pleased to continue supporting the company as it becomes a leader in breakthrough materials science and technology,” John Chaney, investor at Goose Capital and board member at NanoTech, added in the release. “NanoTech’s ability to elevate fire resilience and energy efficiency in the built environment is critical for strengthening and hardening infrastructure. Its pioneered approach is transforming current building standards and making our lives safer.”

The company has secured $34.4 million in total to date, according to the release. It raised an oversubscribed funding round in 2023 and a $5 million seed round in 2020.

Houston clean energy startup acquired by battery storage company FlexGen

m&a activity

A North Carolina company has acquired Houston-based Clean Energy Services, a provider of services for battery energy storage systems and utility-scale solar, for an undisclosed amount.

The buyer is Durham, North Carolina-based FlexGen Power Systems, a provider of battery energy storage software and services.

Clean Energy Services (CES), whose offices are at the Ion, will operate as a subsidiary of FlexGen. Existing CES customers will continue to receive services from CES without disruption or change, FlexGen says.

“Demand for reliable, high-performance power is accelerating, and customers need partners who can deliver at scale,” Kelcy Pegler, CEO of FlexGen, said in a news release. “The addition of CES strengthens our service platform and reinforces our leadership in energy storage technology.”

Ahmad Atwan and Constantine Triantafyllides co-founded CES in 2022. As a startup, CES had raised $8 million in venture capital, according to PitchBook.

“CES has achieved a market leadership position in battery storage services by focusing on reliable speed of service delivery and optimizing asset performance,” Atwan, the company’s CEO, added the release. “FlexGen and CES have been strong partners for years, and this transaction enables us to deliver more robust solutions across a complementary set of customers and markets.”

CES will continue to operate its remote operations center in Houston for over 1 gigawatt of solar assets and 4.5 gigawatt-hours of battery assets, while FlexGen will maintain its remote operations center in Durham.

Halliburton Labs names 4 new clean energy startups to incubator

green team

Four new companies have joined Halliburton Labs, the incubator for early-stage energy and climate startups run by Houston energy giant Halliburton.

Halliburton Labs provides the emerging companies with mentorship, industry connections, laboratory access and other resources as they work toward commercialization, according to a news release.

The four new members include:

  • Nandina REM, a Singapore-based company that delivers carbon fiber thermoplastics. It turns end-of-life assets into new, reliable, high-performance materials for the aviation, aerospace and defense industries in a fraction of the time of standard supply chains.
  • Noon Energy, a California-based company that delivers clean, reliable electricity with ultra-long duration energy storage. Its system uses solid oxide electrochemical cells and stores energy as abundant, flexible industrial gases.
  • Proof Energy, a Silicon Valley-based company developed by the Lawrence Berkeley National Laboratory that is commercializing next-generation metallic solid oxide fuel cell (M-SOFC) technology. Its system uses widely available fuels such as ethanol, methanol, ammonia, and natural gas as hydrogen carriers to enable lower-cost, low-emission commercial transportation, and also offers a zero-emission heating solution to preserve battery range in electric vehicles.
  • Tidal Metals, a New Jersey-based company that has developed technology to economically make decarbonized magnesium metal from seawater and electricity.

"Halliburton Labs exemplifies our commitment to advance a secure and pragmatic energy future," Jeff Miller, chairman, president and CEO of Halliburton, said in the news release. "We welcome these companies into our ecosystem, where they will gain access to the tools, expertise, and connections needed to scale their technologies."

Auckland-based Aquafortus Technologies and California-based Sunchem joined Halliburton Labs in September. With the addition of the four new members, the incubator currently supports six early-stage companies.

Read more about the incubator's 2025 cohort here.