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Houston geothermal company raises $97M Series B

fresh funding

Sage Geosystems has raised a $97 million Series B. Photo via sagegeosystems.com.

Houston-based geothermal energy startup Sage Geosystems has closed its Series B fundraising round and plans to use the money to launch its first commercial next-generation geothermal power generation facility.

Ormat Technologies and Carbon Direct Capital co-led the $97 million round, according to a press release from Sage. Existing investors Exa, Nabors, alfa8, Arch Meredith, Abilene Partners, Cubit Capital and Ignis H2 Energy also participated, as well as new investors SiteGround Capital and The UC Berkeley Foundation’s Climate Solutions Fund.

The new geothermal power generation facility will be located at one of Ormat Technologies' existing power plants. The Nevada-based company has geothermal power projects in the U.S. and numerous other countries around the world. The facility will use Sage’s proprietary pressure geothermal technology, which extracts geothermal heat energy from hot dry rock, an abundant geothermal resource.

“Pressure geothermal is designed to be commercial, scalable and deployable almost anywhere,” Cindy Taff, CEO of Sage Geosystems, said in the news release. “This Series B allows us to prove that at commercial scale, reflecting strong conviction from partners who understand both the urgency of energy demand and the criticality of firm power.”

Sage reports that partnering with the Ormat facility will allow it to market and scale up its pressure geothermal technology at a faster rate.

“This investment builds on the strong foundation we’ve established through our commercial agreement and reinforces Ormat’s commitment to accelerating geothermal development,” Doron Blachar, CEO of Ormat Technologies, added in the release. “Sage’s technical expertise and innovative approach are well aligned with Ormat’s strategy to move faster from concept to commercialization. We’re pleased to take this natural next step in a partnership we believe strongly in.”

In 2024, Sage agreed to deliver up to 150 megawatts of new geothermal baseload power to Meta, the parent company of Facebook. At the time, the companies reported that the project's first phase would aim to be operating in 2027.

The company also raised a $17 million Series A, led by Chesapeake Energy Corp., in 2024.

From Your Site Articles
Here are the top Houston energy transition stories of the year. Photo via Getty Images

Top 10 headlines that fueled Houston energy transition news in 2025

Year in Review

Editor's note: As we ring in a new year, we're looking back at the hottest energy transition topics of 2025. Here are the 10 most-read EnergyCapitalHTX stories of 2025, from a Texas energy startup's $200M funding round to a Houston energy storage company's major ERCOT deal:

Texas energy startup closes $200M round to fund first factory in the state

Base Power, founded by Justin Lopas and Zach Dell, closed a $200 million series B and plans to expand in Texas and around the country. Photo courtesy Base Power.

Base Power, an Austin-based startup that provides battery-powered home energy services and just entered the Houston market, raised $200 million in series B funding. The money was raised for construction of Base Power’s first factory in Texas and the national expansion of Base Power’s services. Last year, the startup landed $68 million in a series A funding round.

Houston startup secures $22 million for ERCOT energy storage projects

Houston's GoodPeak is breaking ground on its first energy storage projects. Photo via Getty Images.

Houston-based GoodPeak nailed down $22 million in construction debt financing to help build its first two 10-megawatt battery energy storage project. GoodPeak secured the debt financing from financial services company Pathward and renewable energy lender BridgePeak Energy Capital.

CenterPoint partners with AI and infrastructure companies to boost reliability

CenterPoint has partnered with Atlanta-based Osmose and Australia-based Neara to use AI-powered predictive modeling to inform decisions on restorations and risk. Photo via Getty Images

Houston utilities giant CenterPoint is partnering with companies from Atlanta and Australia to use AI to increase data accuracy and strengthen the power grid. The partnership is part of a collaboration between AI-powered predictive modeling platform company Neara and utility infrastructure asset assessment solutions company Osmose.

ExxonMobil, Rice launch sustainability initiative with first project underway

Under a new agreement, ExxonMobil and Rice University aim to develop “systematic and comprehensive solutions” to support the global energy transition. Photo via Getty Images.

Houston-based ExxonMobil and Rice University announced a master research agreement to collaborate on research initiatives on sustainable energy efforts and solutions. The agreement included multiple projects that were expected to be underway in 2025.

Houston expert: From EVs to F-35s — materials that power our future are in short supply

No critical minerals, no modern economy. Getty images

If you’re reading this on a phone, driving an EV, flying in a plane, or relying on the power grid to keep your lights on, you’re benefiting from critical minerals. These are the building blocks of modern life. Things like copper, lithium, nickel, rare earth elements, and titanium, they’re found in everything from smartphones to solar panels to F-35 fighter jets. Continue reading this guest column from Houston energy expert Scott Nyquist.

Greentown Labs announces newest startups to join Houston climatetech incubator

Five companies have joined Greentown Labs Houston, specializing in various "green" applications, from converting plastic waste into sustainable materials to developing energy-storage solutions. Photo courtesy Greentown Labs.

Greentown Labs added five startups to its Houston community in Q1 of 2025. The companies are among a group of 19 that joined the climatetech incubator, which is co-located in Houston and Boston, in the same time period. The companies that joined the Houston-based lab specialize in a number of "green" applications, from converting plastic waste into sustainable materials to developing energy-storage solutions.

Houston cleantech company expands into China with hydrogen energy pilot

HNO International is partnering with Zhuhai Topower New Energy Co. to deploy its modular SHEP technology in China. Graphic courtesy of HNO

Hydrogen-based clean energy technology company HNO International announced its first foray into the Chinese market this spring. The company, which is building a state-of-the-art hydrogen production and refueling facility in Katy, entered into an agreement with renewable energy company Zhuhai Topower New Energy Co. This initiative includes a pilot deployment of HNOI’s Scalable Hydrogen Energy Platform, or SHEP, in China.

CenterPoint reports progress on grid improvements ahead of 2025 hurricane season

CenterPoint Energy aims to complete its suite of grid resiliency projects before the 2025 hurricane season. Photo via centerpointenergy.com

As part of an ongoing process to make Houston better prepared for climate disasters, CenterPoint Energy announced its mid-year progress update on the second phase of the Greater Houston Resiliency Initiative (GHRI). CenterPoint reported that it had completed 70 percent of its resiliency work, and that all GHRI-related actions were expected to be complete before the official start of the 2025 hurricane season.

Daikin completes solar plant to power massive Houston-area campus

Daikin Industries' new solar power plant at its Waller-area campus will power its central chiller plant and is designed to connect to the campus' electric grid. Photo courtesy Daikin.

Japanese HVAC company Daikin Industries completed a nearly one-megawatt solar power plant at its Daikin Comfort Technologies North America campus southeast of Waller. Daikin said the new plant at its 4.2 million-square-foot Daikin Texas Technology Park will eliminate an estimated 845 metric tons of carbon emissions each year. The park houses the largest HVAC factory in North America.

Houston earns No. 3 spot among cities with most Fortune 500 headquarters

Twenty-six Houston-area companies landed on the latest Fortune 500 list. Photo via Getty Images

Houston maintained its No. 3 status this year among U.S. metro areas with the most Fortune 500 headquarters. Fortune magazine tallied 26 Fortune 500 headquarters in the Houston area, behind only the New York City area (62) and the Chicago area (30).

Freedom CNG, a distributor of compressed renewable natural gas, has closed three acquisitions in recent months. Photo courtesy Freedom CNG.

Houston renewable fuel co. expands and more energy transition news to know

Trending Topics

Editor's note: The biggest energy transition news in recent weeks includes a major acquisition, big funding, a new biomaterial from Houston researchers, and more. Below are the five most-read stories from EnergyCaptialHTX from July 15-31, 2025:

1. Houston renewable fuel company expands reach with latest acquisition

Freedom CNG is growing. Photo courtesy Freedom CNG

Houston-based Freedom CNG, a provider and distributor of compressed renewable natural gas, has acquired ComTech Energy, a Canada-based provider of on-site mobile refueling for compressed renewable natural gas. The purchase price wasn’t disclosed. The acquisition allows Freedom CNG to adopt a hub-and-spoke operational model, allowing customers to move away from fixed fueling infrastructure with low-carbon energy solutions across North America. Continue reading.

2. Houston researchers develop strong biomaterial that could replace plastic

A team led by M.A.S.R. Saadi and Muhammad Maksud Rahman has developed a biomaterial that they hope could be used for the “next disposable water bottle." Photo courtesy Rice University.

Collaborators from two Houston universities are leading the way in engineering a biomaterial into a scalable, multifunctional material that could potentially replace plastic. The team introduced a biosynthesis technique that aligns bacterial cellulose fibers in real-time, which resulted in robust biopolymer sheets with “exceptional mechanical properties.” Continue reading.

3. Houston energy tech platform Molecule closes series B funding

Molecule has closed its latest investment round. Photo via Getty Images

Houston-based energy trading risk management (ETRM) software company Molecule has completed a successful series B round for an undisclosed amount. The raise was led by Sundance Growth, a California-based software growth equity firm, and Molecule founder Sameer Soleja said the funding will allow the company to "double down on product innovation, grow our team, and reach even more markets." Continue reading.

4. 7 Houston energy-focused businesses among Time's best midsize companies 2025

null7 Houston energy-focused businesses among Time's best midsize companies 2025

CenterPoint is one of 13 Houston companies on Time's list. Photo via centerpoint.com

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. Continue reading.

5. TEX-E names Houston VC leader as new executive director

TEX-E, a Houston-based energy transition nonprofit, has named Sandy Guitar as its executive director. Photo courtesy TEX-E.

The Texas Exchange for Energy & Climate Entrepreneurship (TEX-E) has named Houston venture capital and innovation leader Sandy Guitar as its new executive director. Guitar previously served as general partner and managing director at Houston-based VC firm HX Venture Fund and is co-founder of Weathergage Capital. She also sits on the advisory board of Rice University's Liu Idea Lab for Innovation and Entrepreneurship (Lilie) and launched the Women Investing in VC in Houston group. Continue reading.

The Investment is expected to help expand Bot Auto's tech development in autonomous trucking that will focus on safety and operation efficiency. Photo courtesy of Bot Auto

Houston-based autonomous trucking tech co. raises $20M

fresh funding

A Houston-based autonomous vehicle technology company has raised early funding.

Bot Auto has announced the completion of its pre-series A funding round which was oversubscribed and raised $20 million. The round was led by investments from Brightway Future Capital, Cherubic Ventures, EnvisionX Capital, First Star Ventures, Linear Capital, M31 Capital, Taihill Venture, Uphonest Capital, and Welight Capital.

“As true believers in autonomous trucking, we're thankful for our investors' shared vision,” Xiaodi Hou, founder and CEO of Bot Auto, says in a news release. “Our strong commitment, combined with recent AI advancements and a sharpened focus on operational efficiency, has created a clear path to commercialization.”

The funds raised will be focused on developing the technology and will opt to avoid unnecessary hiring ahead of operational maturity, scaling the operational footprint prior to product readiness, over expansion and partnership debt. The company aims for a more sustainable and efficient future, and is hoping its engineers and AV executives help Bot Auto become an autonomous trucking game changer.

The Investment is expected to help expand Bot Auto's tech development in autonomous trucking that will focus on safety and operation efficiency.

“Our prospects for success have never been more promising,” Hou adds. “ We march forward, committed to bringing this transformative technology to humanity for a brighter future.”

Bot Auto’s vision aligns with the pioneering spirit of Houston’s legacy in space exploration, striving to achieve remarkable feats in technology and transportation. The company is dedicated to leveraging this investment to make significant strides in the US autonomous trucking industry, ultimately contributing to a more sustainable and efficient future.

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This article originally ran on InnovationMap.

Branch Energy aims to provide customers with clean energy at a lower cost than competitors. Photo via Getty Images

Houston clean energy provider raises $10.8M series A

money moves

A tech-driven retail energy provider based in Houston has secured an oversubscribed series A round of funding.

Branch Energy raised a $10.8 million round led by climate-focused venture capital firm Prelude Ventures with co-investor Zero Infinity Partners, an infrastructure tech-focused firm. The fresh funding will go toward accelerating the company's battery management tech and build out the infrastructure of its field services.

A vertically integrated power provider, Branch Energy aims to provide customers with demand management software and battery storage systems to ensure long-term, stable, and clean energy at a lower cost than competitors.

“Our century-old grid design is not equipped for the complexity of today’s energy needs," Alex Ince-Cushman, Branch Energy co-founder and CEO, says in a news release. “Optimizing distributed energy assets in real-time will play an increasingly important role in managing the grid. We built Branch from the ground up as a technology company, allowing us to deliver value to customers in this new era of distributed energy by reducing costs while improving reliability."

The company chose Texas as its inaugural market based on the stress of the grid in the state, the company says in the release. Since 2021 when Branch Energy launched, it has signed up thousands of customers for its 100 percent clean energy service. The business proposition includes lowering customer's energy bills by 5 to 10 percent.

“The power grid, especially in Texas, requires distributed generation and flexible loads as basic economics drives deployment of more renewable resources,” Tim Woodward, managing partner at Prelude Ventures, adds. “Across the country, we are experiencing a major shift toward a decentralized and decarbonized grid. Branch Energy is bringing value to its customers through deployment of intelligent storage that lowers costs and improves reliability.”

Branch Energy, which is available now in some Texas regions, had previously raised $5.5 million in seed and pre-seed funding, per Crunchbase.

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ExxonMobil announces date to move legal headquarters to Texas

save the date

Energy giant Exxon Mobil Corp. has set a date to move its legal headquarters to Texas.

The Spring-based company announced this week that the redomiciliation from New Jersey to Texas is expected to be effective July 1. Exxon's board of directors unanimously recommended redomiciling in the Lone Star State in March, and shareholders approved the move to Texas at the company’s annual meeting in May.

As part of the move, ExxonMobil Holdings Corp. will replace Exxon Mobil Corp. of New Jersey and become the publicly traded parent company. Exxon reports that its shares will continue to trade on the New York Stock Exchange under the ticker symbol “XOM,” and that shareholders do not need to take action.

At the time of the recommendation, Exxon said the move would not affect business operations, management, strategy, assets or employee locations.

Exxon Chairman and CEO Darren Woods added that the redomiciliation was in part due to Texas' business-friendly environment and policies.

"Over the past several years, Texas has made a noticeable effort to embrace the business community. In doing so, it has created a policy and regulatory environment that can allow the company to maximize shareholder value,” Woods said in a news release. "Aligning our legal home with our operating home, in a state that understands our business and has a stake in the company’s success, is important.”

The Associated Press reports that about 30 percent of Exxon's employees work in Texas. Exxon's legal headquarters has been based in New Jersey since 1882, when it was Standard Oil Company.

Exxon moved its operational headquarters from Irving, Texas, to the Houston area in 2023.

Exxon was the highest-ranking Houston-area company on this year's Fortune 500 list, coming in at No. 9. Houston tied with Chicago for the second-most Fortune 500 headquarters on this year's list, with Texas leading the nation for the most Fortune 500 headquarters (57).

“Texas is the undisputed headquarters of headquarters,” Gov. Greg Abbott said in a news release. “The world’s leading businesses invest with confidence in Texas because of our welcoming business climate, predictable regulatory environment, and skilled and growing workforce. People and businesses are choosing Texas because Texas works.”

Houston startups named to World Economic Forum cohort for carbon removal, clean technologies

top honor

Two Houston-based startups have been selected to join the World Economic Forum's Technology Pioneers community.

The two-year program aims to help mission-driven, early-stage start-ups scale their innovations through multi-stakeholder initiatives, co-creating partnerships and other gatherings for community members. One-hundred startups are selected each year from around the globe, this year hailing from 23 countries and working in AI, energy, space, biotech markets and more.

Cleantech startup Vaulted Deep was one of 11 energy and climate companies to be named to the cohort. Julia Reichelstein and Omar Abou-Sayed founded the company in 2023. Its technology injects excess organic waste underground to remove carbon dioxide from the atmosphere.

Last year, Vaulted Deep inked a 12-year deal with Microsoft to remove up to 4.9 million metric tons of carbon dioxide from the environment.

The startup has earned several accolades in recent years, including a No. 3 spot on Fast Company’s list of the World’s Most Innovative Companies of 2026. It was also recently named to market intelligence and advisory firm Cleantech Group's annual Global Cleantech 100 list for a second year in a row.

"Waste management is one of the world's great invisible infrastructure systems ... The need for new infrastructure is growing as disposal challenges become more complex and regulations evolve. Vaulted is building the first new disposal pathway for organic waste in decades by putting it deep underground, permanently," the company shared in a LinkedIn post. "This year, we're joining the World Economic Forum's 2026 Tech Pioneers alongside innovators working on the many interconnected challenges shaping our future."

Houston-based Venus Aerospace was also selected to join the cohort, along with six other spacetech companies. The company was founded in 2020 by Sassie and Andrew Duggleby.

The startup specializes in next-generation rocket engine propulsion as a cleaner alternative to traditional combustion engines. The company's rotating detonation rocket engine (RDRE) burns fuel more efficiently and completed a successful high-thrust test flight last year. Venus says it’s the only company in the world that makes a flight-proven, high-thrust RDRE with a “clear path to scaled production.”

"Frontier technologies matter most when they expand what people, industries, and nations can do," Sassie Duggleby, co-founder and CEO of Venus, said in a news release. "For Venus, RDRE does not just represent a more efficient engine. It is a foundation for faster movement, more capable space systems, and new forms of connectivity across the planet. Being named a Technology Pioneer validates the potential of this technology to help shape a future where distance is less limiting."

Premium EV robotaxis from Uber will roll into Houston next year

Rolling On

More autonomous vehicles are expected to hit the roads in Houston next year.

Ridesharing giant Uber announced that it plans to roll out its premium robotaxi service in the Bayou City in mid-2027. Houston will be Uber’s second planned market for the program, following the San Francisco Bay Area, where the program is expected to be rolled out later this year.

Uber, Nuro and Lucid Group will bring the robotaxi program to Houston with more markets planned for the future. Currently, Nuro is conducting autonomous on-road testing with safety operators in Houston. Testing includes simulation, closed-course testing and supervised public-road testing.

“Houston is a city Nuro knows well, and we’re excited to help bring this robotaxi service to the city through our partnership with Uber and Lucid,” Andrew Chapin, chief operating officer at Nuro, said in a news release. “Houston’s large, complex metro area is an ideal market for demonstrating how Nuro’s universal autonomy platform can generalize across different geographies and operating environments. We look forward to continued engagement with the community as we prepare to launch service in 2027.”

The fleet of 100 vehicles across California and Texas will feature Lucid Gravity EVs and future Lucid Midsize vehicles equipped with Nuro Driver technology, Nuro’s Level 4 universal autonomy platform, plus a redundant sensor suite with cameras, lidar, radar and a roof-mounted halo.

The vehicles will be owned and operated by Uber and its fleet partners and made available to riders through the Uber network, according to the company.

In addition to the fleet of autonomous vehicles, Uber also announced that it has secured a 50,000-square-foot depot facility and dedicated charging pitstop in Houston. The facility will allow Uber and its partners to control vehicle maintenance, repairs, charging, cleaning, and day-to-day operations.

“Houston marks an important next step in our partnership with Lucid and Nuro as we expand autonomous mobility to more riders throughout the world,” Sarfraz Maredia, global head of autonomous mobility & delivery at Uber, added in the release. “Together, we’re combining best-in-class vehicle and autonomy technology with Uber’s scale, fleet operations expertise, and infrastructure capabilities to build a service that can grow across dozens of markets in the years ahead.”

Waymo launched its autonomous vehicle program in Houston in February.

The company later suspended its driverless car services in Houston, other major Texas cities, and Atlanta, after one of its vehicles was stranded by flooding during heavy rains. However, according to the Houston Chronicle, the fleet has resumed activity in Houston and is fully active.

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This article originally appeared on InnovationMap.com.

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