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

top honor

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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Last month, the inaugural Houston Energy and Climate Startup Week 2024 successfully highlighted the GHP and HETI's mission. Photo via GHP

Highlights from the inaugural Houston Energy and Climate Startup Week

the view from heti

Houston has become the hub for startups and companies looking to scale innovative technologies that are transforming the energy industry and advancing a sustainable, low-carbon future. Last month, the inaugural Houston Energy and Climate Startup Week 2024 successfully highlighted this mission.

Rice Alliance for Technology and Entrepreneurship, Halliburton Labs, Greentown Labs, Digital Wildcatters launched the inaugural startup week in collaboration with the Partnership’s Houston Energy Transition Initiative. The week brought together leading energy and climate venture capital investors, industry leaders, and startups from around the world.

Over 30 events took place from September 9-13, featuring more than 100 speakers and 125 startups. Attendance numbers came in at over 1,400 people across the week’s anchor events, and additional events were individually organized by organizations and startups in Houston’s ecosystem.

“By hosting the Houston Energy & Climate Startup Week, we're not just showcasing our city's strengths - we're actively shaping its future. This event is a critical catalyst for fostering collaboration, investment and talent development within the burgeoning energy and climate tech ecosystem. This week is about demonstrating our commitment to that future and inspiring the next generation of energy innovators,” says Janice Tran, Kanin Energy CEO & Co-Founder

The Kickoff event, sponsored by Repsol, Microsoft and BBVA, hosted fireside chats by several of Houston’s leading startups, including Solugen, Cemvita, Kanin Energy and Syzygy.

“Houston is at the forefront of not just energy innovation, but industrial innovation more broadly. With the momentum that's built over the last few years, it's the perfect time to showcase our progress and drive further advancements in climate solutions,” says Gaurab Chakrabarti, Solugen CEO and co-founder.

Houston is home to more than 65 incubators and accelerators and over 260 cleantech and climate tech startups. The region continues to build momentum and is focused on attracting investment for this growing sector, seeing a 577 percent growth since 2019. According to Partnership data, there has been over $1.95 billion and 175 deals with cleantech and climate tech startups.

"Houston is uniquely positioned to tackle the greatest challenge of our time - producing more energy with fewer emissions. This city is where energy innovation scales and opportunity thrives. As a natural hub for startups and investors, Houston brought this to life during Houston Energy and Climate Startup Week. Years in the making, this event was launched to answer the question: Can the whole be greater than the sum of its parts? This past week proved it can. We look forward to continue building on this successful week,” says Jane Stricker, senior vice president at Greater Houston Partnership and executive director of the Houston Energy Transition Initiative.

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This article originally ran on the Greater Houston Partnership's Houston Energy Transition Initiative blog. HETI exists to support Houston's future as an energy leader. For more information about the Houston Energy Transition Initiative, EnergyCapitalHTX's presenting sponsor, visit htxenergytransition.org.

According to a new report, Houston attracted the fifth most climatetech funding last year in the United States. Photo via Getty Images

With $200M raised last year, Houston cleans up on new report tracking climatetech funding

We're No. 5

Climatech funding for Houston-area startups crept toward the $200 million mark in 2023 — putting it ahead of Dallas-Fort Worth, Austin, and several other major metro areas and making it a standout among U.S. climatech hubs.

Last year, the Houston area collected $199.94 million in climatech funding across 14 deals, according to PitchBook data analyzed by Revolution Growth, a venture capital firm based in Washington, D.C.

“With its deep-rooted energy sector, Houston is an attractive HQ for companies innovating within renewable energy, carbon capture, and emissions reduction,” Revolution says. “Partnerships with oil and gas companies also provide unique collaboration opportunities for climate tech startups, accelerating market adoption and helping companies achieve scale quickly.”

Los Angeles led the climatech funding list at $544.62 million, followed by No. 2 Denver, No. 3 D.C., No. 4 Seattle, and No. 5 Houston. In 12th place was Dallas-Fort Worth ($30.55 million). Austin claimed the No. 15 spot ($13.38 million).

“While traditional coastal tech hubs still hold considerable influence, dozens of [climatech] clusters are emerging between them,” says Revolution.

In its new report on America’s top climatech hubs, Revolution cites three Houston startups to watch:

Buildforce, a platform for workers in the electrical trades
Fervo Energy, a supplier of carbon-free energy through geothermal projects
Solugen, a developer of bio-based chemicals that replace traditional petroleum-based products

Solugen claims a spot on CNBC’s annual Disruptor 50 list, which highlights private companies that are “upending the classic definition of disruption.” Photo via solugen.com

Houston-based Solugen named among annual top disruptors

on the rise

Houston-based biotech startup Solugen is making waves among innovative companies.

Solugen appears at No. 36 on CNBC’s annual Disruptor 50 list, which highlights private companies that are “upending the classic definition of disruption.” Privately owned startups founded after January 1, 2009, were eligible for the Disruptor 50 list.

Founded in 2016, Solugen replaces petroleum-based products with plant-derived substitutes through its Bioforge manufacturing platform. For example, it uses engineered enzymes and metal catalysts to convert feedstocks like sugar into chemicals that have traditionally been made from fossil fuels, such as petroleum and natural gas.

Solugen has raised $643 million in funding and now boasts a valuation of $2.2 billion.

“Sparked by a chance medical school poker game conversation in 2016, Solugen evolved from prototype to physical asset in five years, and production hit commercial scale shortly thereafter,” says CNBC.

Solugen co-founders Gaurab Chakrabarti and Sean Hunt received the Entrepreneur of The Year 2023 National Award, presented by professional services giant EY.

“Solugen is a textbook startup launched by two partners with $10,000 in seed money that is revolutionizing the chemical refining industry. The innovation-driven company is tackling impactful, life-changing issues important to the planet,” Entrepreneur of The Year judges wrote.

In April 2024, Solugen broke ground on a Bioforge biomanufacturing plant in Marshall, Minnesota. The 500,000-square-foot, 34-acre facility arose through a Solugen partnership with ADM. Chicago-based ADM produces agricultural products, commodities, and ingredients. The plant is expected to open in the fall of 2025.

“Solugen’s … technology is a transformative force in sustainable chemical manufacturing,” says Hunt. “The new facility will significantly increase our existing capabilities, enabling us to expand the market share of low-carbon chemistries.”

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This article originally ran on InnovationMap.

Gaurab Chakrabarti and Sean Hunt were originally named regional winners in this year's competition this summer along with nine other Houston entrepreneurs. Photos via solugen.com

Houston sustainability startup founders named winners for 2023 Entrepreneur of the Year awards

winner, winner

Houston’s Gaurab Chakrabarti and Sean Hunt, the founders of the transformative chemical manufacturing company Solugen, have been named EY’s US National Award winners for Entrepreneur of the Year.

Solugen, also recently named a finalist in the 2023 Houston Innovation Awards, is an environmentally friendly approach that relies on smaller chemical refineries that helps in reducing costs and transportation-related emissions.

Some of their noted accomplishments includes innovations like the proprietary reactor, dubbed the Bioforge, which is a carbon-negative molecule factory and manufacturing process produces zero wastewater or emissions compared with traditional petrochemical refineries.The Bioforge uses a chemienzymatic process in converting plant-sourced substances into essential materials that can be used instead of fossil fuels.

Chakrabarti and Hunt were originally named regional winners in this year's competition this summer along with nine other Houston entrepreneurs.

Founded in 2016 by Hunt and Gaurab Chakrabarti, Solugen has raised over $600 million from investors like Sasol that believe in the technology's potential. The company is valued at reportedly over $2 billion. Solugen is headquartered in Houston, not because it is the hometown of Chakrabarti, but for what Houston brings to the company.

“There’s no way our business could succeed in the Bay Area," Chakrabarti said in a 2023 interview at SXSW where he detailed the offers Hunt and he received to move the business out of state. “For our business, if you look at the density of chemical engineers, the density of our potential customers, and the density of people who know how to do enzyme engineering, Houston happened to be that perfect trifecta for us.”

Even though they are headquartered in Houston, Solugen recently secured plans to expand to the Midwest, as in November they announced its newest strategic partnership with sustainable solutions company ADM (NYSE:ADM) in Marshall, Minnesota. The partnership includes plans for Solugen to build a 500,000-square-foot biomanufacturing facility next to an existing ADM facility , with the two companies working together on producing biomaterials to replace fossil fuel products.

“The strategic partnership with ADM will allow Solugen to bring our chemienzymatic process to a commercial scale and meet existing customer demand for our high-performance, cost-competitive, sustainable products,” Chakrabarti said in a news release. “As one of the few scaled-up and de-risked biomanufacturing assets in the country, Solugen’s Bioforge platform is helping bolster domestic capabilities and supply chains that are critical in ensuring the U.S. reaches its ambitious climate targets.”

For Chakrabarti and Hunt, Solugen was born out of a 12-year friendship, and the journey began after a friendly card game. After an entrepreneurship contest at MIT, which earned them second place and a $10,000 prize, they invested the winnings to work on what would become Solugen, a proof-of-concept reactor with materials bought from a local home improvement store.

"We had a conviction that we were building something that could be impactful to the rest of the world,” Chakrabarti said at SXSW in 2023.

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This article originally ran on InnovationMap.

Solugen and Sasol have entered into a strategic partnership. Photo via Solugen

Houston-based sustainable chemicals company secures major partnership with Sasol

cleaner chemicals

A Houston company that's creating cleaner chemicals with little to no impact on the environment has scored a partnership with a major chemicals producer.

Solugen and Sasol Chemicals, a business unit of Saslo Ltd., revealed that they are working together to explore commercialization of sustainably-made home and personal care products.

“This agreement is an example of our approach of partnering to find innovative solutions for our customers,” Jonathan Ward, senior manager of Strategy and Sustainable Growth for Sasol’s Essential Care Chemicals business division, says in a news release. “Our focus is delivering high-performing products with lower carbon footprints at competitive prices, and we are eager to see how Solugen’s products might help us do that.”

Founded in 2016 by Sean Hunt and Gaurab Chakrabarti, Solugen's carbon-negative molecule factory, named the Bioforge, uses a chemienzymatic process in converting plant-sourced substances into essential materials that can be used instead of fossil fuels. The manufacturing process is carbon neutral, and Solugen has raised over $600 million from investors that believe in the technology's potential.

"We are thrilled to partner with Sasol Chemicals, one of the world’s largest producers of surfactants, to drive positive impact in the home and personal care market,” Chakrabarti, CEO of Solugen, says in the release. “Sasol’s commitment to sustainability makes it an ideal partner for Solugen. We look forward to leveraging our combined strengths in technology, production, and market development to meet increasing consumer demand for our high-performance, bio-based solutions.”

Chakrabarti shared some of the secrets to Solugen's success and early partnerships at a SXSW panel earlier this year. The company was also recently named a finalist in the 2023 Houston Innovation Awards.

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Federal judge strikes Trump order blocking wind energy development

wind win

In a win for clean energy and wind projects in Texas and throughout the U.S., a federal judge struck down President Donald Trump’s “Day One” executive order that blocked wind energy development on federal lands and waters, the Associated Press reports.

Judge Patti Saris of the U.S. District Court for the District of Massachusetts vacated Trump’s executive order from Jan. 20, declaring it unlawful and calling it “arbitrary and capricious.”

The challenge was led by a group of state attorneys general from 17 states and Washington, D.C., which was led by New York Attorney General Letitia James. The coalition pushed back against Trump's order , arguing that the administration didn’t have the authority to halt project permitting, and that efforts would critically impact state economies, the energy industry, public health and climate relief efforts.

White House spokesperson Taylor Rogers told the Associated Press that wind projects were given unfair treatment during the Biden Administration and cited that the rest of the energy industry suffered from regulations.

According to the American Clean Power Association, wind is the largest source of renewable energy in the U.S. It provides 10 percent of the electricity generated—and growing. Texas leads the nation in wind electricity generation, accounting for 28 percent of the U.S. total in 2024, according to the U.S. Energy Information Administration.

Several clean-energy initiatives have been disrupted by recent policy changes, impacting Houston projects.

The Biden era Inflation Reduction Act’s 10-year hydrogen incentive was shortened under Trump’s One Big Beautiful Bill Act, prompting ExxonMobil to pause its Baytown low-carbon hydrogen project. That project — and two others in the Houston region — also lost federal support as part of a broader $700 million cancellation tied to DOE cuts.

Meanwhile, Texas House Democrats have urged the administration to restore a $250 million Solar for All grant that would have helped low-income households install solar panels.

Texas launches cryptocurrency reserve with $5 million Bitcoin purchase

Digital Deals

Texas has launched its new cryptocurrency reserve with a $5 million purchase of Bitcoin as the state continues to embrace the volatile and controversial digital currency.

The Texas Comptroller’s Office confirmed the purchase was made last month as a “placeholder investment” while the office works to contract with a cryptocurrency bank to manage its portfolio.

The purchase is one of the first of its kind by a state government, made during a year where the price of Bitcoin has exploded amid the embrace of the digital currency by President Donald Trump’s administration and the rapid expansion of crypto mines in Texas.

“The Texas Legislature passed a bold mandate to create the nation’s first Strategic Bitcoin Reserve,” acting Comptroller Kelly Hancock wrote in a statement. “Our goal for implementation is simple: build a secure reserve that strengthens the state’s balance sheet. Texas is leading the way once again, and we’re proud to do it.”

The purchase represents half of the $10 million the Legislature appropriated for the strategic reserve during this year’s legislative session, but just a sliver of the state’s $338 billion budget.

However, the purchase is still significant, making Texas the first state to fund a strategic cryptocurrency reserve. Arizona and New Hampshire have also passed laws to create similar strategic funds but have not yet purchased cryptocurrency.

Wisconsin and Michigan made pension fund investments in cryptocurrency last year.

The Comptroller’s office purchased the Bitcoin the morning of Nov. 20 when the price of a single bitcoin was $91,336, according to the Comptroller’s office. As of Friday afternoon, Bitcoin was worth slightly less than the price Texas paid, trading for $89,406.

University of Houston energy economist Ed Hirs questioned the state’s investment, pointing to Bitcoin’s volatility. That makes it a bad investment of taxpayer dollars when compared to more common investments in the stock and bond markets, he said.

“The ordinary mix [in investing] is one that goes away from volatility,” Hirs said. “The goal is to not lose to the market. Once the public decides this really has no intrinsic value, then it will be over, and taxpayers will be left holding the bag.”

The price of Bitcoin is down significantly from an all-time high of $126,080 in early October.

Lee Bratcher, president of the Texas Blockchain Council, argued the state is making a good investment because the price of Bitcoin has trended upward ever since it first launched in early 2009.

“It’s only a 16-year-old asset, so the volatility, both in the up and down direction, will smooth out over time,” Bratcher said. “We still want it to retain some of those volatility characteristics because that’s how we could see those upward moves that will benefit the state’s finances in the future.”

Bratcher said the timing of the state’s investment was shrewd because he believes it is unlikely to be valued this low again.

The investment comes at a time that the crypto industry has found a home in Texas.

Rural counties have become magnets for crypto mines ever since China banned crypto mining in 2021 and Gov. Greg Abbott declared “Texas is open for crypto business” in a post on social media.

The state is home to at least 27 Bitcoin facilities, according to the Texas Blockchain Council, making it the world’s top crypto mining spot. The two largest crypto mining facilities in the world call Texas home.

The industry has also come under criticism as it expands.

Critics point to the industry’s significant energy usage, with crypto mines in the state consuming 2,717 megawatts of power in 2023, according to the comptroller’s office. That is enough electricity to power roughly 680,000 homes.

Crypto mines use large amounts of electricity to run computers that run constantly to produce cryptocurrencies, which are decentralized digital currencies used as alternatives to government-backed traditional currencies.

A 2023 study by energy research and consulting firm Wood Mackenzie commissioned by The New York Times found that Texans’ electric bills had risen nearly 5%, or $1.8 billion per year, due to the increase in demand on the state power grid created by crypto mines.

Residents living near crypto mines have also complained that the amount of job creation promised by the facilities has not materialized and the noise of their operation is a nuisance.

“Texas should be reinvesting Texan’s tax money in things that truly bolster the economy long term, living wage, access to quality healthcare, world class public schools,” said state Sen. Molly Cook, D-Houston, who voted against the creation of the strategic fund. “Instead it feels like they’re almost gambling our money on something that is known to be really volatile and has not shown to be a tide that raises all boats.”

State Sen. Charles Schwertner, R-Georgetown, who authored the bill that created the fund, said at the time it passed that it will allow Texas to “lead and compete in the digital economy.”

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This story was originally published by The Texas Tribune and distributed through a partnership with The Associated Press.

Houston-based Fervo Energy closes $462M series E

fresh funding

Houston-based geothermal energy company Fervo Energy has closed an oversubscribed $462 million series E funding round, led by new investor B Capital.

“Fervo is setting the pace for the next era of clean, affordable, and reliable power in the U.S.,” Jeff Johnson, general partner at B Capital, said in a news release. “With surging demand from AI and electrification, the grid urgently needs scalable, always-on solutions, and we believe enhanced geothermal energy is uniquely positioned to deliver. We’re proud to support a team with the technical leadership, commercial traction, and leading execution capabilities to bring the world’s largest next-generation geothermal project online and make 24/7 carbon-free power a reality.”

The financing reflects “strong market confidence in Fervo’s opportunity to make geothermal energy a cornerstone of the 24/7 carbon-free power future,” according to the company. The round also included participation from Google, a longtime Fervo Partner, and other new and returning investors like Devon Energy, Mitsui & Co., Ltd., Mitsubishi Heavy Industries and Centaurus Capital. Centaurus Capital also recently committed $75 million in preferred equity to support the construction of Cape Station Phase I, Fervo noted in the release.

The latest funding will support the continued buildout of Fervo’s Utah-based Cape Station development, which is slated to start delivering 100 MW of clean power to the grid beginning in 2026. Cape Station is expected to be the world's largest next-generation geothermal development, according to Fervo. The development of several other projects will also be included in the new round of funding.

“This funding sharpens our path from breakthrough technology to large-scale deployment at Cape Station and beyond,” Tim Latimer, CEO and co-founder of Fervo, added in the news release. “We’re building the clean, firm power fleet the next decade requires, and we’re doing it now.”

Fervo recently won Scaleup of the Year at the 2025 Houston Innovation Awards, and previously raised $205.6 million in capital to help finance the Cape Station earlier this year. The company fully contracted the project's capacity with the addition of a major power purchase agreement from Shell this spring. Fervo’s valuation has been estimated at $1.4 billion and includes investments and support from Bill Gates.

“This new investment makes one thing clear: the time for geothermal is now,” Latimer added in a LinkedIn post. “The world desperately needs new power sources, and with geothermal, that power is clean and reliable. We are ready to meet the moment, and thrilled to have so many great partners on board.”

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