Houston energy startup closes $17M series A to fund Texas geothermal facility

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Houston-based Sage Geosystems announced the first close of $17 million round led by Chesapeake Energy Corp. Photo via sagegeosystems.com

A Houston geothermal startup has announced the close of its series A round of funding.

Houston-based Sage Geosystems announced the first close of $17 million round led by Chesapeake Energy Corp. The proceeds aim to fund its first commercial geopressured geothermal system facility, which will be built in Texas in Q4 of 2024. According to the company, the facility will be the first of its kind.

The venture is joined by technology investor Arch Meredith, Helium-3 Ventures and will include support from existing investors Virya, LLC, Nabors Industries Ltd., and Ignis Energy Inc.

“The first close of our Series A funding and our commercial facility are significant milestones in our mission to make geopressured geothermal system technologies a reality,” Cindy Taff, CEO of Sage Geosystems, says in a news release. “The success of our GGS technologies is not only critical to Sage Geosystems becoming post-revenue, but it is an essential step in accelerating the development of this proprietary geothermal baseload approach.

"This progress would not be possible without the ongoing support from our existing investors, and we look forward to continuing this work with our new investors," she continues.

The 3-megawatt commercial facility will be called EarthStore and will use Sage’s technology that harvests energy from pressurized water from underground. The facility will be able to store energy — for short and long periods of time — and can be paired with intermittent renewable energy sources like wind and solar. It will also be able to provide baseload, dispatchable power, and inertia to the electric grid.

In 2023, Sage Geosystems debuted the EarthStore system in a full-scale commercial pilot project in Texas. The pilot produced 200 kilowatt for more than 18 hours, 1 megawatt for 30 minutes, and generated electricity with Pelton turbines. The system had a water loss of less than 2 percent and a round-trip efficiency (RTE) of 70-75.

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Mark Cuban calls AI ‘the greater democratizer’ for young entrepreneurs

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Texas billionaire Mark Cuban—whose investment portfolio includes Houston-based Holliball, a startup that makes and sells large inflatable holiday ornaments—believes AI is leveling the playing field for budding low-income entrepreneurs.

At the recent Clover x Shark Tank Summit in Las Vegas, the Shark Tank alum called AI “the greater democratizer.”

Cuban told Axios that free and low-cost AI tools enable disadvantaged teenagers to compete with seasoned professionals.

“Right now, if you’re a 14- to 18-year-old and you’re in not-so-good circumstances, you have access to the best professors and the best consultants,” Cuban said. “It allows people who otherwise would not have access to any resources to have access to the best resources in real time. You can compete with anybody.”

While Cuban believes AI is “the great democratizer” for low-income young people, low-income workers still face hurdles in navigating the AI landscape, according to Public Works Partners, an urban planning and consulting firm. The firm says access to AI among low-income workers may be limited due to cost, insufficient digital literacy and infrastructure gaps.

“Without adequate resources and training, these workers may struggle to adapt to AI-driven workplaces or access the educational opportunities necessary to acquire new skills,” Public Works Partners said.

Texas 2036, a public policy organization focused on the state’s future, reported in January AI jobs in Texas are projected to grow 27 percent over the next decade. The number 2036 refers to the year when Texas will celebrate its bicentennial.

As for the current state of AI, Cuban said he doesn’t think the economy is witnessing an AI bubble comparable to the dot-com bubble, which lasted from 1998 to 2000.

“The difference is, the improvement in technology basically slowed to a trickle,” Cuban said of the dot-com era. “We’re nowhere near the improvement in technology slowing to a trickle in AI.”

Houston's top innovators and startups for 2025 and more news to know

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Editor's note: We're looking back at the top Houston innovation news for the first half of October 2025, including the big reveal of our 2025 Houston Innovation Awards finalists. Here are the five most-read InnovationMap stories from Oct. 1-15, 2025:

1. Announcing the 2025 Houston Innovation Awards finalists

Meet the finalists for the Houston Innovation Awards, taking place Nov. 13. Graphic via Gow Media

InnovationMap is proud to reveal the finalists for the 2025 Houston Innovation Awards. Taking place on November 13 at Greentown Labs, the fifth annual Houston Innovation Awards will honor the best of Houston's innovation ecosystem, including startups, entrepreneurs, mentors, and more. This year's finalists were determined by our esteemed panel of judges, comprised of past award winners and InnovationMap editorial leadership. Continue reading.

2. 5 minority-founded Houston startups shine as Innovation Awards finalists

These five minority-founded businesses stood out to the judges for the 2025 Houston Innovation Awards. Photo via marsmaterials.tech

Houston is one of the most diverse cities in the nation, and that trend carries over into its innovation and startup ecosystem. As part of the 2025 Houston Innovation Awards, our Minority-founded Businesses category will honor an innovative Houston startup founded or co-founded by BIPOC or LGBTQ+ representation. Five minority-founded businesses have been named finalists for the 2025 award. The finalists range from a wearable health tech device company to a clean chemical manufacturing business to a startup with a lunar mission. Continue reading.

3. 2 UH projects named finalists for $50M fund to shape future of Gulf Coast

One project involves the innovative recycling of wind turbines into seawall and coastal habitats. Courtesy rendering

Two University of Houston science projects have been selected as finalists for the Gulf Futures Challenge, which will award a total of $50 million to develop ideas that help benefit the Gulf Coast. Sponsored by the National Academies of Science, Engineering and Medicine’s Gulf Coast Research Program and Lever for Change, the competition is designed to spark innovation around problems in the Gulf Coast, such as rising sea levels, pollution, energy security, and community resiliency. The two UH projects beat out 162 entries from organizations based in Alabama, Florida, Louisiana, Mississippi, and Texas. Continue reading.

4. 3 Houston-area companies appear on Fortune’s inaugural AI ranking

Spring-based ExxonMobil ranks within the top 10 on the new Fortune AIQ 50 ranking. Photo via Getty Images.

Three companies based in the Houston area appear on Fortune’s inaugural list of the top adopters of AI among Fortune 500 companies. The Fortune AIQ 50 ranking is based on ServiceNow’s Enterprise AI Maturity Index, an annual measurement of how prepared organizations are to adopt and scale AI. To evaluate how Fortune 500 companies are rolling out AI and how much they value AI investments, Fortune teamed up with Enterprise Technology Research. The results went into computing an AIQ score for each company. Continue reading.

5. 10+ can't-miss Houston business and innovation events for October

From the fourth annual Tejano Tech Summit to the first-ever Ion Family Tech Festival, here's what not to miss this month. Image courtesy the Ion

Houston's October calendar is packed with informative and impactful events—plus a few fun ones, too. From the fourth annual Tejano Tech Summit to the first-ever Ion Family Tech Festival, here's what not to miss and how to register.Continue reading.

CPRIT hires MD Anderson official as chief cancer prevention officer

new hire

The Austin-based Cancer Prevention and Research Institute of Texas, which provides funding for cancer research across the state, has hired Ruth Rechis as its chief prevention officer. She comes to CPRIT from Houston’s University of Texas MD Anderson Cancer Center, where she led the Cancer Prevention and Control Platform.

Before joining MD Anderson, Rechis was a member of the executive leadership team at the Livestrong Foundation, an Austin-based nonprofit that supports people affected by cancer.

“Ruth has widespread connections throughout the cancer prevention community, both in Texas and across the nation,” CPRIT CEO Kristen Doyle said in a news release. “She is a long-term passionate supporter of CPRIT, and she is very familiar with our process, programs, and commitment to transparency. Ruth is a terrific addition to the team here at CPRIT.”

Rechis said that by collaborating with researchers, policymakers, public health leaders and community partners, CPRIT “can continue to drive forward proven prevention strategies that improve health outcomes, lower long-term costs, and create healthier futures for all.”

At MD Anderson, Rechis and her team worked with more than 100 organizations in Texas to bolster cancer prevention initiatives at clinics and community-based organizations.

Rechis is a longtime survivor of Hodgkin lymphoma, a type of cancer that affects the lymph nodes, which are part of a person’s immune system.
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