Houston geothermal company closes $13M in investments to fuel growth

fresh funding

XGS Energy plans to “aggressively expand” its team in Houston this year thanks to its latest round of investments. Photo via Getty Images

XGS Energy, a California-headquartered geothermal power company with a major presence in Houston, has closed $13 million in new financing that included new investors Aligned Climate Capital, ClearSky, ClimateIC and WovenEarth Ventures, in addition to inside investors.

The company plans to “aggressively expand” its team in Houston this year, according to a news release.

“We are facing global energy supply challenges of unprecedented scale and urgency,” Kevin Kimsa, Managing Partner at ClimateIC, said in the release. “The XGS team is uniquely primed to meet the moment, bringing together innovative technology and leading engineering talent with the deep experience in infrastructure development and financing critical to deploying large-scale energy systems at speed.”

As part of the financing deal, Mano Nazar, ClearSky Senior Advisor and the former Chief Nuclear Officer of NextEra Energy, will join the XGS Energy Board of Directors.

“XGS’s advanced geothermal technology is uniquely positioned to deliver abundant energy to the grid faster than any other baseload energy technology at a time of unprecedented demand for energy resources,” Nazar said in a news release. “We are excited to partner with XGS to deliver on their mission of sustainable, reliable, and scalable geothermal energy.”

XGS is known for its next-gen closed-loop geothermal well architecture. The company saw massive growth in the Houston market last year and recently completed a 100-meter field demonstration in central Texas. The new funding supports the XGS’s multi-gigawatt project pipeline.

The recent financing also builds on an oversubscribed Series A round led by Constellation Technology Ventures, VoLo Earth Ventures, and Valo Ventures that closed last year.

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Axel-Pierre Bois, XGS Energy's Chief Technology Officer. Photo courtesy XGS Energy

Geothermal exec on Houston expansion, commercialization and more

Q&A

Challenges in the energy transition often center around two questions: Where will organizations find the resources? And how will projects be financed?

XGS Energy's next-gen closed-loop geothermal well architecture addresses both issues head-on. The California-based company saw massive growth in the Houston market last year and recently completed a 100-meter field demonstration in central Texas, marking a major milestone for its technology's commercialization and potential for scale.

In an interview with EnergyCapital, Axel-Pierre Bois, XGS's Chief Technology Officer, shares what drew him to the geothermal space, why XGS is expanding in Houston and what the company's plans are for the year ahead.

How does XGS Energy's technology address the biggest challenges in geothermal energy?

XGS Energy is developing a geothermal system that decouples geothermal energy from its traditional dependence on water and geology to deliver affordable, clean energy anywhere there is hot rock.

Historically, geothermal resources have been hard to locate, as conventional systems require the overlap of hot rock, porous and permeable geology, and abundant water to produce energy, limiting their potential to a few select hot spots worldwide. Instead of relying on an underground fracture network that drives the geology and water requirements, the base component of XGS’s system is a single well, in which fluid is pumped to a hot rock resource and then returned to the surface through a tube-in-shell design, creating a sealed, closed loop. This allows XGS to produce geothermal energy anywhere where there is hot rock, unlocking terawatt-scale potential in the U.S. alone.

Geothermal systems have also struggled to secure project financing, as many systems have historically faced high levels of unplanned cost risk due to factors including water loss and production uncertainty. XGS’s sealed, closed-loop system ensures that it can provide reliable, predictable electricity throughout its lifespan. XGS also boosts the cost-competitiveness of its system through our major innovation, a proprietary thermally conductive materials system that is installed downhole around each well, increasing the heat transferred to the closed-loop system by 30-50%.

What has drawn you to a career in the geothermal energy space?

I have been in the subsurface industry for over 30 years, developing technical solutions for companies in the fields of geosciences, underground storage, upstream oil and gas, and geothermal heat harvesting to help improve their overall economic, ethical and environmental footprints. In 2009, I founded Curistec, a technology company providing research, engineering and technical services for geomechanics, wellbore integrity, well abandonment, cement design and cement and rock testing. A few years back, Curistec assisted with the Iceland Deep Drilling Project, helping to develop cement formulations for superhot geothermal well applications to enable drilling in high-temperature environments. As I looked toward the future, it became clear that next-generation geothermal technologies would transform the geothermal energy industry and open new markets worldwide. Curistec had been working closely with the XGS Energy team as technology partners for several years, so joining the team directly to help shape the technology development was an exciting opportunity to help develop and deploy a new system to unlock the full terawatt-scale potential of geothermal energy.

Tell us about the 100-meter field demonstration in central Texas completed in 2024 — what all did you and your team learn from the test?

Our 100-meter field demonstration in central Texas marked a significant step in our progress toward deploying geothermal energy in a commercial setting. With this field operation, we successfully demonstrated our ability to mix, pump and place our thermally conductive materials system at a commercial scale, using off-shelf tools and technologies. This was a significant milestone, taking us from theoretical models and laboratory tests to field-scale operations, proving that our novel geothermal system is operationally viable in real-world well conditions.

The completion of the Texas field demonstration advanced XGS into the new wave of geothermal innovators that are putting real steel in the ground. In 2024, we kicked off construction at our commercial-scale demonstration in California and are excited to share updates in the year ahead.

Last year, XGS Energy leased over 10,000 square feet of office space in Memorial City. How has Houston's business community and opportunities benefitted the company?

Houston, the epicenter of the oil and gas industry, has become a hub of energy innovation, offering attractive incentives for growing companies like XGS. The region’s workforce, which is home to some of the best subsurface engineers and operational talent in the energy sector, was a key factor for XGS when we were planning our operational roadmap. This expertise, paired with proximity to our partners in the field services industries, like cementing and drilling, is both apracticaland tactical advantage for XGS.

We’ve built a strong technical and operational team here at XGS, with experience from the oil and gas industry, utilities and power project developers. XGS is planning for continued growth in the Houston area, leveraging the region’s leading engineering and operational workforce and its intensifying interest in supporting the energy transition.

What are XGS Energy's goals for 2025?

In 2024, the XGS Energy team made significant progress toward our goal of providing clean, round-the-clock energy with our solid-state geothermal system. In 2025, XGS Energy will be focused on deploying its geothermal system at a commercial scale, starting with the completion of our full-scale prototype in California. XGS will also continue accelerating our commercial traction, expanding our already robust and highly differentiated geothermal resource evaluation toolkit, advancing our global project pipeline, and growing our team to strengthen our operational capability and capacity.

The Meta and Sage Geosystems project is reportedly the first next-generation geothermal project located to the east of the Rocky Mountains. Rendering by Sage Geosystems and Meta

Meta taps Houston geothermal co. to power data center growth with clean energy

big tech

A Houston company has signed a new agreement with Meta Platforms Inc. — Facebook's parent company — to power the tech giant's data center growth.

Houston-based Sage Geosystems agreed to deliver up to 150 megawatts of new geothermal baseload power to Meta. The companies made the announcement this week at the United States Department Energy’s Catalyzing Next Generation Geothermal Development Workshop.

The deal is significant because it's the first next-generation geothermal project located to the east of the Rocky Mountains, the companies report in a news release.

“This announcement is the perfect example of how the public and private sector can work together to make the clean energy transition a reality,” Cindy Taff, CEO of Sage Geosystems, says in the release. “We are thrilled to be at the forefront of the next generation of geothermal technology and applaud the DOE for supporting the commercialization of innovation solutions.

"As energy demand continues to grow, the need for reliable, resilient and sustainable power is paramount and our partnership with Meta underscores the critical need for innovative and sustainable energy solutions like ours,” she continues.

The project's first phase will aim to be operating in 2027. The plans reflect how geothermal is being recognized as a growing carbon-free energy source in the country, and how Meta is committed to clean energy initiatives.

“The U.S. has seen unprecedented growth in demand for energy as our economy grows, the manufacturing sector booms thanks to the Biden-Harris Administration’s Investing in America agenda, and new industries like AI expand,” U.S. Energy Deputy Secretary David Turk says. “The Administration views this increased demand as a huge opportunity to add more clean, firm power to the grid and geothermal energy is a game-changeras we work to grow our clean power supply.”

Sage's technology — called Geopressured Geothermal System — works deep in the earth to develop energy storage and geothermal baseload power.

“Meta thanks the Department of Energy’s leadership on promoting and supporting the exploration of new energy sources like geothermal," Urvi Parekh, head of renewable energy at Meta, says. "That leadership supports Meta’s goal to enable the addition of reliable, affordable, and carbon-free power to the grid with this geothermal energy deal. We are excited to partner with such an innovative company like Sage Geosystems that is a proven leader in geothermal development on this project and beyond.”

Sage recently teamed up with a utility provider for an energy storage facility in the San Antonio metro area to build its three-megawatt EarthStore facility.

The company is also working on an exploratory geothermal project for the Army’s Fort Bliss post in Texas, which is the third U.S. Department of Defense geothermal initiative in the Lone Star State.

GA Drilling opened its Houston office in 2013 to tap into the region’s oil and gas industry. Photo via Getty Images

Drilling tech co. with Houston HQ to partner on European geothermal power plant

growing abroad

GA Drilling, a provider of geothermal drilling technology whose U.S. headquarters is in Houston, is teaming up with a European energy company to develop a geothermal power plant in Germany.

GA Drilling and ZeroGeo Energy, a Swiss company specializing in renewable energy, say the 12-megawatt Hot Dry Rock Geothermal Power Plant (Project THERMO) is the first of several geothermal power and geothermal energy storage projects they’re planning in Europe. GA Drilling will supply technology for Hot Dry Rock, and ZeroGEO will operate the plant.

“The need for clean baseload power is real, and geothermal has the highest potential to deliver that safely and securely. We’re excited to be collaborating with ZeroGeo to help address the power needs in Europe,” Dusan Kocis, co-founder and chief operating officer of Slovakia-based GA Drilling, says in a news release.

GA Drilling opened its Houston office in 2013 to tap into the region’s oil and gas industry.

Last year, GA Drilling conducted the first public demonstration of its latest deep drilling tool, ANCHORBIT. GA Drilling says it developed the tool to cut the cost of deep geothermal drilling by doubling drilling speeds and extending the life of drill bits.

GA Drilling performed the ANCHORBIT test at Nabors Industries’ technology center in Houston. Nabors, a drilling contractor based in Houston, is using GA Drilling’s technology in its drilling operations.

In 2022, Nabors invested $8 million in GA Drilling.

“Given the expected sharp growth in global energy consumption over the next decades, the world will require an even sharper growth in sustainable energy supply. I am convinced that geothermal energy will be a key contributor to the necessary increase in clean energy generation,” Anthony Petrello, chairman, president, and CEO of Nabors, said in an announcement about the GA Drilling investment.

Fervo Energy scored a $244 million round of funding thanks to existing and new investors. Photo via Fervo Energy

Devon Energy leads Houston geothermal startup's $244M funding round

ready to dig

An Oklahoma-based shale oil and gas leader has backed Fervo Energy's latest round of funding, supporting the startup's geothermal technology yet again.

Fervo announced its latest round of funding this week to the tune of $244 million. The round was led by Devon Energy, a company that's previously backed the startup.

“Demand for around-the-clock clean energy has never been higher, and next-generation geothermal is uniquely positioned to meet this demand,” Tim Latimer, Fervo CEO and co-founder, says in a news release. “Our technology is fully derisked, our pricing is already competitive, and our resource pipeline is vast. This investment enables Fervo to continue to position geothermal at the heart of 24/7 carbon-free energy production.”

Founded in 2017, Fervo provides carbon-free energy through development of next-generation geothermal power. The company has recently reported its success at its Cape Station project, a400 MW project in Beaver County, Utah, as well as at its full-scale commercial pilot, Project Red, in northern Nevada and made possible through a 2021 partnership with Google.

Galvanize Climate Solutions, John Arnold, Liberty Mutual Investments, Marunouchi Innovation Partners, Mercuria, and Mitsubishi Heavy Industries also contributed to the round with existing investors Capricorn’s Technology Impact Fund, Congruent Ventures, DCVC, Elemental Excelerator, Helmerich & Payne, and Impact Science Ventures.

“The energy trilemma is one of the defining global challenges of our time; how can we generate power that is affordable, reliable, and clean,” Houstonian John Arnold, founder of Centaurus Capital and co-chair of Arnold Ventures, says in the release. “Fervo has transformed geothermal into a scalable carbon-free resource ready to meet the moment.”

The fresh funding, according to the company, will go toward Fervo’s work in Cape Station, that is slated to begin delivering clean electricity to the grid in 2026.

“Fervo’s approach to geothermal development leverages leading-edge subsurface, drilling, and completions expertise and techniques Devon has been honing for decades,” David Harris, chief corporate development officer and executive vice president at Devon, says in the release. “We look forward to deepening our partnership with Fervo to capture the full value of Fervo’s first-mover advantage in geothermal and the adjacencies to Devon’s core business.”

In 2022, Fervo raised a $138 million series C round to support the completion of power plants in Nevada and Utah and evaluate new projects in California, Idaho, Oregon, Colorado, and New Mexico, as well as in other countries. This latest investment brings the company's total funds raised to $431 million since its inception in 2017, according to Crunchbase.

Fervo Energy's Project Red with Google is officially operational. Photo via blog.google

Houston geothermal company's Google facility in Nevada goes online

up and running

Google is on a mission to run all of its data centers and office campuses on constant carbon-free energy by 2030, and the tech giant is one step closer to that goal.

Last week, Google announced that its 24/7 carbon-free energy, or CFE, in Nevada to power its local data center in the state is officially operational. The facility is powered by Houston-based Fervo Energy's geothermal technology, a project — called Project Red — that began in 2021 and celebrated its successful pilot this summer.

"When we began our partnership with Fervo, we knew that a first-of-a-kind project like this would require a wide range of technical and operational innovations," Michael Terrell, senior director of energy and climate at Google, writes in a blog post about the partnership.

Fervo relies on tried and true drilling techniques from the oil and gas industry, accessing heat energy that previously has been elusive to traditional geothermal methods, Terrell continues. Fervo dug two horizontal wells at the Nevada plant, as well as installed fiber-optic cables to capture data that tracks performance and other key information.

"The result is a geothermal plant that can produce round-the-clock CFE using less land than other clean energy sources and drawing on skills, knowledge, and supply chains that exist in other industries," Terrell says. "From our early commitment to support the project’s development to its successful completion, we’ve worked closely with Fervo to overcome obstacles and prove that this technology can work."

Google also recently announced a partnership with Project InnerSpace, a nonprofit focused on global geothermal energy development.

Fervo is working on another nearby project, the company announced in September. The 400-milliwatt geothermal energy project in Cape Station, Utah, will start delivering carbon-free power to the grid in 2026, with full-scale production beginning in 2028.

The project, in southwest Utah, is about 240 miles southwest of Salt Lake City and about 240 miles northeast of Las Vegas. Cape Station is adjacent to the U.S. Department of Energy’s Frontier Observatory for Research in Geothermal Energy (FORGE) and near the Blundell geothermal power plant.

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Harris County looks to future with new Climate Justice Plan

progress plan

Harris County commissioners approved a five-point Climate Justice Plan last month with a 3-1 vote by Harris County commissioners. The plan was created by the Office of County Administration’s Office of Sustainability and the nonprofit Coalition for Environment, Equity and Resilience.

“Climate action planning that centers on justice has the potential to spark innovative thinking and transformative actions that will lead to meaningful and just transitions in communities, policies, funding mechanisms, and implementation strategies,” the 59-page report reads.

The plan seeks to address issues relating to ecology, infrastructure, economy, community and culture. Here’s a breakdown:

Ecology

The plan will work towards clean air, water, and soil efforts that support the health of the environment, renewable energy that reduces greenhouse gases and pollution, and conservation and protection of our natural resources. Some action items include:

Increasing resources for local government agencies
Developing a free native seed bank at all libraries
Identifying partners and funding streams to reduce the costs of solar power for area households
Producing renewable energy on large tracts of land
Expanding tree planting by 20 percent
Providing tree maintenance and restoration efforts
Incentivizing gray water systems and filtration to conserve fresh water

Economy

In terms of the economy, the Climate Justice Plan wants the basic needs of the community met and wants to also incentivize resilience, sustainability, and climate solutions, and recycling and reuse methods. Specific actions include:

Quantifying the rising costs associated with climate change
Expanding resources and partnering with organizations to support programs that provide food, utility, housing, and direct cash assistance
Supporting a coalition of area non-profit organizations and county offices to strengthen social service support infrastructure
Supporting home repair, solar installation, and weatherization programs
Identify methods to expand free and efficient recycling and composting services
Creating a climate tax levied on greenhouse gas emissions to develop a climate fund to offset the impacts of pollution

Infrastructure

As Houston has been prone to hurricanes and flooding damage, the infrastructure portion of the plan aims to protect the region from risks through preventative floodplain and watershed management. Highlights include:

Investing in generators and solar power, plus battery backup and bidirectional EV charging for all county libraries
Providing more heating and cooling centers with charging stations
Coordinating and deploying community microgrids, especially in neighborhoods prone to losing power
Seeking partnerships and funding for low- or no-cost water purifiers for areas with the highest needs
Protecting the electric grid through regular maintenance and upgrading, and advocating for greater accountability and responsiveness among appointed officials
Developing regulations to require resilient power line infrastructure to prevent outages and failures in new developments

Community and Culture

Housing, a strong economy and access to affordable and healthy food will be achieved under the community aspect of the plan. Under culture, the plan seeks to share knowledge and build trust. Key goals include:

Developing a campaign to promote the use of the Harris County 311 system to identify critical community concerns
Supporting the development of a Community Housing Plan that ensures stable and safe housing
Advocating for revisions to Federal Emergency Management Agency (FEMA) disaster funding to account for renters’ losses and unmet housing needs
Developing and funding a whole-home program for repairs, weatherization, and solar energy
Developing culturally relevant public relations campaigns to increase knowledge of health, environment and biodiversity across generations

Read the full plan here.

Houston company completes orphan well decommission project in the Gulf

temporary abandonment

Houston-based Promethean Energy announced this month that it has successfully decommissioned offshore orphaned wells in the Matagorda Island lease area.

Around this time last year, the company shared that it would work on the temporary abandonment of nine orphan wells on behalf of the Department of Interior's Bureau of Safety and Environmental Enforcement, or BSEE, in the area. Promethean is known for decommissioning mature assets in a cost-effective and environmentally sustainable manner.

“Our team is incredibly proud to have completed this critical work efficiently, safely, and ahead of budget,” Steve Louis, SVP of decommissioning at Promethean Energy, said in a news release. “By integrating our expertise, technologies and strategic partnerships, we have demonstrated that decommissioning can be both cost-effective and environmentally responsible.”

The company plans to use the Matagora Island project as a replicable model to guide similar projects worldwide. The project used comprehensive drone inspections, visual intelligence tools for safety preparations and detailed well diagnostics to plug the wells.

Next up, Promethean is looking to decommission more of the estimated 14,000 unplugged wells in the Gulf.

"Building on our strong execution performance, our strategy is to continue identifying synergies with other asset owners, fostering collaboration, and developing sustainable decommissioning campaigns that drive efficiency across the industry," Ernest Hui, chief strategy officer of Promethean Energy, added in the release.

Oxy opens energy-focused innovation center in Midtown Houston

moving in

Houston-based Occidental officially opened its new Oxy Innovation Center with a ribbon cutting at the Ion last month.

The opening reflects Oxy and the Ion's "shared commitment to advancing technology and accelerating a lower-carbon future," according to an announcement from the Ion.

Oxy, which was named a corporate partner of the Ion in 2023, now has nearly 6,500 square feet on the fourth floor of the Ion. Rice University and the Rice Real Estate Company announced the lease of the additional space last year, along with agreements with Fathom Fund and Activate.

At the time, the leases brought the Ion's occupancy up to 90 percent.

Additionally, New York-based Industrious plans to launch its coworking space at the Ion on May 8. The company was tapped as the new operator of the Ion’s 86,000-square-foot coworking space in Midtown in January.

Dallas-based Common Desk previously operated the space, which was expanded by 50 percent in 2023 to 86,000 square feet.

CBRE agreed to acquire Industrious in a deal valued at $400 million earlier this year. Industrious also operates another local coworking space is at 1301 McKinney St.

Industrious will host a launch party celebrating the new location Thursday, May 8. Find more information here.

Oxy Innovation Center. Photo via LinkedIn.

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This story originally appeared on our sister site, InnovationMap.com.

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