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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.

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Base Power, founded by Justin Lopas and Zach Dell, has closed one of the largest venture capital deals of the year. Photo courtesy Base Power.

Energy startup Base Power raises $1 billion series C round

fresh funding

Austin-based startup Base Power, which offers battery-supported energy in the Houston area and other regions, has raised $1 billion in series C funding—making it one of the largest venture capital deals this year in the U.S.

VC firm Addition led the $1 billion round. All of Base Power’s existing major investors also participated, including Trust Ventures, Valor Equity Partners, Thrive Capital, Lightspeed Venture Partners, Andreessen Horowitz (a16z), Altimeter, StepStone Group, 137 Ventures, Terrain, Waybury Capital, and entrepreneur Elad Gil. New investors include Ribbit Capital, Google-backed CapitalG, Spark Capital, Bond, Lowercarbon Capital, Avenir Growth Capital, Glade Brook Capital Partners, Positive Sum and 1789 Capital Management.

Coupled with the new $1 billion round, Base Power has hauled in more than $1.27 billion in funding since it was founded in 2023.

Base Power supplies power to homeowners and the electric grid through a distributed storage network.

“The chance to reinvent our power system comes once in a generation,” Zach Dell, co-founder and CEO of Base Power, said in a news release. “The challenge ahead requires the best engineers and operators to solve it, and we’re scaling the team to make our abundant energy future a reality.”

Zach Dell is the son of Austin billionaire and Houston native Michael Dell, chairman and CEO of Round Rock-based Dell Technologies.

In less than two years, Base Power has developed more than 100 megawatt-hours of battery-enabled storage capacity. One megawatt-hour represents one hour of energy use at a rate of one million watts.

Base Power recently expanded its service to the city of Houston. It already was delivering energy to several other communities in the Houston area. To serve the Houston region, the startup has opened an office in Katy.

The startup also serves the Dallas-Fort Worth and Austin markets. At some point, Base Power plans to launch a nationwide expansion.

To meet current and future demand, Base Power is building its first energy storage and power electronics factory at the former downtown Austin site of the Austin American-Statesman’s printing presses.

“We’re building domestic manufacturing capacity for fixing the grid,” Justin Lopas, co-founder and chief operating officer of Base Power, added in the release. “The only way to add capacity to the grid is [by] physically deploying hardware, and we need to make that here in the U.S. ... This factory in Austin is our first, and we’re already planning for our second.”

U.S. Rep. Morgan Luttrell, a Magnolia Republican, and Hertha Metals founder and CEO Laureen Meroueh toured Hertha’s Conroe plant in August. Photo courtesy Hertha Metals/Business Wire.

Houston-area sustainable steel company emerges from stealth with $17M in VC funding

heavy metals

Conroe-based Hertha Metals, a producer of substantial steel, has hauled in more than $17 million in venture capital from Khosla Ventures, Breakthrough Energy Fellows, Pear VC, Clean Energy Ventures and other investors.

The money has been put toward the construction and the launch of its 1-metric-ton-per-day pilot plant in Conroe, where its breakthrough in steelmaking has been undergoing tests. The company uses a single-step process that it claims is cheaper, more energy-efficient and equally as scalable as conventional steelmaking methods. The plant is fueled by natural gas or hydrogen.

The company, founded in 2022, plans to break ground early next year on a new plant. The facility will be able to produce more than 9,000 metric tons of steel per year.

Hertha said in a news release that its process, which converts low-grade iron ore into molten steel or high-purity iron, “doesn’t just materially lower cost and energy use — it fundamentally expands our capacity to produce iron and steel at scale, by unlocking a wider range of iron ore feedstocks.”

Laureen Meroueh, founder and CEO of Hertha, says the company’s process will fill a gap in U.S. steel production.

“We’re not just reinventing steelmaking; we’re redefining what’s possible in materials, manufacturing, and national resilience,” Meroueh says.

Hertha says it’s in talks with magnet producers — which make permanent magnets and magnetic assemblies from raw materials such as iron — to become a U.S. supplier of high-purity iron. In its next stage of growth, Hertha will aim to operate at a capacity of 500,000 metric tons of steel production per year.

The company won the Department of Energy's Summer Energy Program for Innovation Clusters (EPIC) Startup Pitch Competition last summer. Read more here.

According to a new report, Houston is one of the top cities for funding for sustainability companies. Photo via Getty Images

Houston ranked a top market for attracting funding for sustainability-focused startups

by the numbers

From a financial standpoint, Houston appears to be a sustainable environment for sustainability-focused startups.

An analysis by PromoLeaf, a retailer of sustainable promotional products, that came out at the end of last year ranks Houston fourth among U.S. cities for the average funding raised by locally based startups in the sustainability sector, according to Crunchbase data.

Per the report, the Bayou City attracts $150.7 million in sustainability funding for startups. Ahead of Houston are Salt Lake City with $204.5 million; Santa Monica, California, with $154.3 million; and Fremont, California, with $153.4 million.

PromoLeaf’s analysis features cities where at least 20 companies are focused on sustainability.

The analysis indicates Houston has 20.6 sustainability startups per 100,000 residents. Ranking first in that regard is Boulder, Colorado (115 per 100,000 residents).

While Houston trails Boulder by a long distance, it fares well among the Texas cities in the analysis:

  1. Austin, 26.2 sustainability startups per 100,000 residents
  2. Houston, 20.6 sustainability startups per 100,000 residents
  3. Midland, 18.8 sustainability startups per 100,000 residents
  4. Plano, 11.9 sustainability startups per 100,000 residents
  5. Dallas, 11 sustainability startups per 100,000 residents
  6. Fort Worth, 5.3 sustainability startups per 100,000 residents
  7. San Antonio, 5.2 sustainability startups per 100,000 residents

PromoLeaf says more than 21,600 sustainability startups operate in the U.S. They’re in the renewable energy, recycling and pollution control, environmental engineering, green consumer goods, and environmental consulting industries.

The analysis shows Houston has:

  • 13.7 renewable energy startups per 100,000 residents
  • 5.8 recycling and pollution control startups per 100,000 residents
  • 3.5 environmental engineering startups per 100,000 residents
  • 2.9 environmental consulting startups per 100,000 residents
  • 0.70 green consumer goods startups per 100,000 residents

According to the Greater Houston Partnership, renewable energy startups leading Houston’s energy transformation include Energy Transition Ventures, Fysikes Biosolutions, Ionada, Katz Water Technologies, Pressure Corp., and Renewell Energy.

“A dynamic business climate combined with growth in venture capital funding in Houston has created fertile ground for companies of all stages aiming to power our world through the global energy transition,” the partnership says. “As the Energy Capital of the World, Houston has become a hub for startups and venture capital firms investing in the region’s energy future.”

Outside the energy sector, Houston startups like Trendy Seconds also are making their mark in sustainability. The company runs an online marketplace where women can find preowned clothing or shop for new clothing from sustainable brands.

“Our ultimate goal is to make responsible consumption super easy,” Maria Burgos, founder of Trendy Seconds, told InnovationMap last year.

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This article originally ran on InnovationMap.

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HETI members to take the stage at CERAWeek 2026 in Houston

The View from HETI

CERAWeek returns to Houston March 23–27, convening global industry leaders to explore the trends shaping the future of energy.

The Greater Houston Partnership’s Houston Energy Transition Initiative (HETI) members will play a key role in this year’s program, contributing to discussions spanning digital innovation, power systems, decarbonization and workforce. Below are the sessions featuring HETI members throughout the week:

AI in Energy: Managing the Transformation
Monday, March 23 | 9:30-10:00 a.m.
Speakers: Hector Rocha, Accenture; Rebecca Hofmann, Blockchain For Energy; Paul Markwell, S&P Global

Scaling Innovation: Building the Ecosystem for the Next Energy Breakthroughs
Monday, March 23 | 10:30-11:10 a.m.
Speakers: Graham Gordon, Accenture; Carolyn Seto, S&P Global; Bernie Bulkin, Global Energy Infrastructure Plc; Georgina Campbell Flatter, Greentown Labs
Examines how partnerships across capital, policy and infrastructure can accelerate commercialization and scaling of breakthrough energy technologies.

Oil Strategies for a World in Transition
Monday, March 23 | 11:15-11:55 a.m.
Speakers: Olivier Le Peuch, SLB; Anders Opedal, Equinor; Vicki Hollub, Occidental; Atul Arya, S&P Global
Discusses how producers are adapting portfolio strategies to balance resilience, demand outlooks and transition pressures.

Gas: Growing Markets and New Players
Monday, March 23 | 12:00-12:40 p.m.
Speakers: Liz Westcott, Woodside Energy; Toby Rice, EQT Corporation; Shankari Srinivasan, S&P Global; Ryosuke Tsugaru, JERA CO., INC.

Advances in Exploration Technologies for Oil & Gas and Mining
Monday, March 23 | 1:30-2:10 p.m.
Speakers: Amy Callahan, Accenture; Hussein Shel, Amazon Web Services; Oscar Abbink, S&P Global
Highlights sensing, imaging and AI tools improving discovery efficiency and sustainability in exploration.

AI in Action: From Pilot to Profit
Monday, March 23 | 1:30-2:00 p.m.
Speakers: Shridevi Bale, Accenture; Paul Gruenwald, S&P Global
Shares lessons from scaling AI deployments beyond pilots into measurable operational value.

Power Networks: Collaborating to Meet Demand
Monday, March 23 | 2:15-2:55 p.m.
Speakers: Lawrence Coben, NRG Energy; Jim Murphy, Invenergy; Eduard Sala de Vedruna, S&P Global
Examines grid readiness and collaboration models needed to manage surging electricity demand.

New Phase of Gas: From Regional Security to Global Market Integration
Monday, March 23 | 3:00-3:40 p.m.
Speakers: Cederic Cremers, Shell; Balaji Krishnamurthy, Chevron; Kevin Gallagher, Santos; Mansoor Al Hamed, Mubadala Energy; Dave Ernsberger, S&P Global
Discusses LNG’s evolving role in global integration, energy security and future pricing structures.

Transforming Upstream: Pathways to Scaling New Technologies
Monday, March 23 | 7:00-8:30 p.m.
Speakers: Rami El Debs, Accenture; Trey Lowe, Devon Energy; Bader Al-Attar, Kuwait Petroleum Corporation
Explores adoption of advanced digital and automation technologies in upstream operations.

Leadership Dialogue
Tuesday, March 24 | 9:00-9:20 a.m.
Speakers: Wael Sawan, Shell; Daniel Yergin, S&P Global

One Grid, One ASEAN: Building a Shared Clean Energy Future
Tuesday, March 24 | 10:30-11:10 a.m.
Speakers: Akihiro Ondo, Mitsubishi Power; Gauri Jauhar, S&P Global

Harmonizing Carbon Accounting: Charting a Path Forward
Tuesday, March 24 | 10:40-11:20 a.m.
Speakers: Edward Stones, Dow; Sasha Mackler, ExxonMobil; Musaab Al-Mulla, Saudi Aramco; Kevin Birn, S&P Global
Examines efforts to standardize emissions accounting to improve comparability and market transparency.

Global Exploration Revival: Lessons and New Strategies
Tuesday, March 24 | 11:30-12:10 p.m.
Speakers: John Ardill, ExxonMobil; Dan Pratt, S&P Global; Guido Brusco, Eni

How Will AI Change the Game for Energy Profitability?
Tuesday, March 24 | 12:20-1:00 p.m.
Speakers: Rakesh Jaggi, SLB; Jim Masso, Honeywell; Atul Arya, S&P Global; Darryl Willis, Microsoft; Renata Baruzzi, Petrobras
Examines how AI and cloud technologies could reshape cost structures and performance across energy systems.

Balancing Act: Price, Reliability and the Global Call on U.S. Energy
Tuesday, March 24 | 2:35-3:15 p.m.
Speakers: Stéphane Michel, TotalEnergies; Eleonor Kramarz, S&P Global; Matt Schatzman, NextDecade; Brian Falik, Mercuria Energy America
Explores tensions between domestic supply reliability and global export opportunities.

The Future of Upstream: Matching Capital Discipline with Opportunity
Tuesday, March 24 | 2:35-3:15 p.m.
Speakers: Richard Jackson, Occidental; Philippe Mathieu, Equinor; Niloufar Molavi, PwC; Bob Fryklund, S&P Global

Transforming the Energy Industry: How Will Technology Change Business Models?
Tuesday, March 24 | 2:35- 3:15 p.m.
Speakers: Ryder Booth, Chevron; Peter Terwiesch, ABB; Atul Arya, S&P Global
Examines digital transformation and new partnership models reshaping energy value chains.

Sustainable Solutions: Partnership, Technology and Innovative Paths
Tuesday, March 24 | 3:25-4:05 p.m.
Speakers: Barry Engle, ExxonMobil; Luis Cabra, Repsol; Leanne Todd, S&P Global; Roeland Baan, Topsoe
Highlights collaborative approaches to deploying scalable decarbonization solutions.

The Future of Refining: Resilience, Innovation and Low-Carbon Pathways
Tuesday, March 24 | 3:25-4:05 p.m.
Speakers: Amber Russell, bp; Kurt Barrow, S&P Global; Martijn van Koten, OMV; Atsuhiko Hirano, Idemitsu; Magnus Heimburg, VAROPreem
Explores how refining and supply chains are adapting to policy, demand and emissions pressures.

Reinventing Business Strategies: Thriving in the New Energy Economy
Tuesday, March 24 | 4:15-4:55 p.m.
Speakers: Muqsit Ashraf, Accenture; Philippe Frangules, S&P Global; Sushil Purohit, Gentari Sdn Bhd
Discusses evolving strategies integrating new technologies and markets.

Creating AI-Ready Organizations
Tuesday, March 24 | 4:20-5:05 p.m.
Speakers: David Rabley, Accenture; Gwenaelle Avice-Huet, Schneider Electric; Dave Ernsberger, S&P Global; Rob Schapiro, Microsoft; Geoffrey Parker, Arthur L. Irving Institute for Energy and Society at Dartmouth
Focuses on workforce, leadership and infrastructure required for effective AI adoption.

Meeting Power Demand for Data Centers
Wednesday, March 25 | 10:30-11:20 a.m.
Speakers: Karim Amin, Siemens Energy; Ed Baine, Dominion Energy; Douglas Giuffre, S&P Global; Ingmar Ritzenhofen, RWE Supply & Trading and RWE Clean Energy; Amanda Peterson Corio, Google; Jim Shield, Invenergy
Discusses strategies for aligning infrastructure, policy and markets to meet data-center load growth.

Where Agentic AI Is Now and What Comes Next
Wednesday, March 25 | 10:30-11:00 a.m.
Speakers: Tathagata Basu, Honeywell; Ben Wilson, Amazon Web Services, Bhavesh Dayalji, S&P Global

People Power: Strategic Human Capital in a New Energy Era
Wednesday, March 25 | 10:40-11:20 a.m.
Speakers: Jessica Van Singel, Accenture
Examines workforce strategy alignment with innovation and competitiveness goals.

Global Energy Pathways in the Age of Abundance
Wednesday, March 25 | 11:45-12:35 p.m.
Speakers: Gareth Ramsay, bp; Atul Arya, S&P Global; Olu Verheijen, Office of the President of the Federal Public of Nigeria

Agentic AI: Embracing Autonomy
Thursday, March 26 | 10:00-10:30 a.m.
Speakers: Trygve Randen, SLB; Uwa Airhiavbere, Microsoft; Eric Hanselman, S&P Global
Examines governance and reliability considerations as autonomous AI systems expand in energy.

The Changing Mix of U.S. Power Generation: Gas, Renewables, Coal, Nuclear and Beyond
Thursday, March 26 | 10:30-11:20 a.m.
Speakers: Bill Newsom, Mitsubishi Power; Douglas Giuffre, S&P Global; John-Paul Jones, Urenco Enrichment Company; Leslie Duke, Burns & McDonnell; Mike DeBock, NextEra Energy Resources
Explores how policy and technology shifts are reshaping generation portfolios.

Large Load Growth: Reshaping the Future of Power
Thursday, March 26 | 11:10-11:50 a.m.
Speakers: Robert Gaudette, NRG Energy; Petter Skantze, NextEra Energy Resources; Douglas Giuffre, S&P Global; Peter Lake, National Energy Dominance Council
Discusses planning and market responses to large-scale electricity demand.

Interconnecting America: The Grid’s Last Mile
Thursday, March 26 | 12:00-12:40 p.m.
Speakers: Tim Holt, Siemens Energy; Philippe Frangules, S&P Global; David Brast, TC Energy; David Rosner, Federal Energy Regulatory Commission

AI: Driving Performance in the Power Sector
Thursday, March 26 | 3:05-3:45 p.m.
Speakers: Dak Liyanearachchi, NRG Energy; Hanna Grene, Microsoft; Douglas Giuffre, S&P Global
Explores AI use cases improving grid management and forecasting.

Digital Twins: The AI Enabler for Multiple Sectors
Thursday, March 26 | 4:30-5:10 p.m.
Speakers: Sacha Abinader, Accenture; Oscar Abbink, S&P Global
Examines digital twins enabling predictive maintenance and AI training environments.

View the full CERAWeek agenda.

———

This article originally appeared 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.

Houston data center capacity could more than double by 2028, CBRE report says

data analysis

The Houston market could more than double its data center capacity by the end of 2028, a new report indicates.

The report, published by commercial real estate services provider CBRE, says greater demand for data center capacity in the Houston area is being fueled by energy companies, along with large-scale cloud services and AI-driven tenants.

In the second half of 2025, the Houston market had 154 megawatts of data center capacity, which was on par with capacity in the second half of 2024. Another 28.5 megawatts of capacity was under construction during that period.

“Multiple providers are advancing new builds and redevelopments, including significant power upgrades to recently purchased buildings, underscoring long-term confidence even as the market works through elevated vacancy and uneven absorption,” CBRE says of Houston’s data center presence.

One project alone promises to significantly boost the Houston market’s data center capacity. Data center developer Serverfarm plans to use part of a $3 billion credit facility to build a 250-acre, AI-ready data center campus near Houston with a potential capacity of more than 500 megawatts. The Houston campus and two other Serverfarm projects are already leased to unidentified tenants, according to CoStar.

A 60-megawatt, AI-ready Serverfarm data center is under construction in Houston. The $137 million, 438,000-square-foot project, located near the former headquarters of computer manufacturer Compaq, is supposed to be completed in the third quarter of 2027.

Data Center Map identifies 59 data centers in the Houston area managed by 36 operators, including DataBank, Data Foundry, Digital Realty, IBM, Logix Fiber Networks, Lumen and TRG Datacenters. That compares with more than 180 data centers in Dallas-Fort Worth, more than 50 in the San Antonio area and 40 in the Austin area.

Texas is home to more than 400 data centers, according to Data Center Map.

In November, Google said it’s investing $40 billion to build AI data centers in West Texas and the Texas Panhandle.

“This is a Texas-sized investment in the future of our great state,” Gov. Greg Abbott said when Google’s commitment was announced. “Texas is the epicenter of AI development, where companies can pair innovation with expanding energy. Google's $40 billion investment makes Texas Google's largest investment in any state in the country and supports energy efficiency and workforce development in our state.”

Houston energy transition ecosystem rebrands as 'Energytech Cypher'

new look

Houston-based Energytech Nexus has rebranded.

The cleantech founders community will now be known as Energytech Cypher. Organizers say the new name was inspired by the Arabic roots of the word cypher, ṣifr, which is also the root of the word zero.

"A cypher is a key that unlocks what's hidden," Nada Ahmed, co-founder and chief revenue officer of Energytech Cypher, said in a news release. "And zero? Zero is where every transformation begins, the leap from 0 to 1, from idea to reality, from potential to power. We decode the energy transition by connecting the right founders, the right capital, and the right corporate partners at the right time, because the most important journey in energy is the one that takes you from nothing to something."

Energytech Nexus has rebranded to Energytech Cypher.

Co-founder and CEO Jason Ethier says that the name change better reflects the organization's mission.

"The energy transition doesn't have a technology problem. It has a connection problem," Ehtier added in the release. "The right founders exist. The right investors exist. The right partners exist. What's been missing is the infrastructure to bring them together—to decode the complexity, remove the friction, and make sure the best technologies find the markets that need them. That's what this community has always done. Energytech Cypher is the name that finally says it."

Energytech Cypher, previously known as Energytech Nexus, was first launched in 2023 and has grown from a podcast to a 130-member ecosystem. It has supported startups including Capwell Services, Resollant, Syzygy Plasmonics, Hertha Metals, Solidec and many others.

It is known for its flagship programs like the Pilotathon, which connects founders with industry partners for pilot opportunities. The event debuted in 2024.

Energytech Cypher also launched its COPILOT Accelerator last year. The accelerator partners with Browning the Green Space, a nonprofit that promotes diversity, equity and inclusion (DEI) in the clean energy and climatech sectors. The inaugural cohort included two Houston-based startups and 12 others from around the U.S.

It also hosts programs like Liftoff, Energy Tech Market, lunch and learns, CEO roundtables, investor workshops and international partnership initiatives.

Last year, Energytech Cypher also announced a new strategic ecosystem partnership with Greentown Labs, aimed at accelerating growth for clean energy startups. It also named its global founding partners, including Houston-based operations such as Chevron Technology Ventures, Collide, Oxy Technology Ventures, and others from around the world.

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