3 Houston-area companies named to Global Cleantech 100

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Amperon, Hertha Metals and Vaulted Deep were named to this year's Global Cleantech 100 list. Photo via Getty Images

Three Houston-area companies—Amperon, Hertha Metals and Vaulted Deep—appear on this year’s Global Cleantech 100 list.

The unranked list, generated by market intelligence and advisory firm Cleantech Group, identifies the 100 privately held companies around the world that are most likely to make a significant impact in the cleantech market over the next five to 10 years.

For the 2026 list, Cleantech Group received more than 24,000 Global Cleantech 100 nominations from nearly 60 countries. Cleantech Group scored those companies and narrowed the contenders to 264. An expert panel reviewed those nominees, and the list was whittled down to the 100 winners.

Here’s a rundown of the three Houston-area honorees:

Amperon

Founded in 2018 by Sean Kelly and Abe Stanway, Houston-based Amperon offers an AI-enabled energy forecasting and analytics platform designed to help stabilize electric grids. Amperon received undisclosed amounts of venture capital from National Grid Partners and Tokyo Gas Co. Ltd. last year and announced a recent investment from Samsung Ventures earlier this month.

Hertha Metals

Founded in 2022 by Laureen Meroueh, Conroe-based Hertha Metals provides a single-step process for producing sustainable steel. Last year, the company emerged from stealth mode and raised more than $17 million in venture capital.

Vaulted Deep

Vaulted Deep’s technology injects excess organic waste underground to remove carbon dioxide from the atmosphere. Julia Reichelstein and Omar Abou-Sayed founded the Houston-based company in 2023. Last year, the startup raised $32.3 million in venture capital. Also in 2025, Vaulted Deep signed a 12-year deal with software giant Microsoft to remove up to 4.9 million metric tons of carbon dioxide from the environment.

Vaulted Deep also made the list last year, along with Houston-based Syzygy Plasmonics and Fervo Energy. Fervo was also named the 2025 North American Company of the Year by Cleantech Group.

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Sage Geosystems and Fervo Energy were among the top five on LexisNexis's 10 Most Innovative Startups in Texas report. Photo via sagegeosystems.com

3 Houston energy companies rank among most innovative startups in Texas

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Three Houston companies claimed spots on LexisNexis's 10 Most Innovative Startups in Texas report, with two working in the geothermal energy space.

Sage Geosystems claimed the No. 3 spot on the list, and Fervo Energy followed closely behind at No. 5. Fintech unicorn HighRadius rounded out the list of Houston companies at No. 8.

LexisNexis Intellectual Property Solutions compiled the report. It was based on each company's Patent Asset Index, a proprietary metric from LexisNexis that identifies the strength and value of each company’s patent assets based on factors such as patent quality, geographic scope and size of the portfolio.

Houston tied with Austin, each with three companies represented on the list. Caris Life Sciences, a biotechnology company based in Dallas, claimed the top spot with a Patent Asset Index more than 5 times that of its next competitor, Apptronik, an Austin-based AI-powered humanoid robotics company.

“Texas has always been fertile ground for bold entrepreneurs, and these innovative startups carry that tradition forward with strong businesses based on outstanding patent assets,” Marco Richter, senior director of IP analytics and strategy for LexisNexis Intellectual Property Solutions, said in a release. “These companies have proven their innovation by creating the most valuable patent portfolios in a state that’s known for game-changing inventions and cutting-edge technologies.We are pleased to recognize Texas’ most innovative startups for turning their ideas into patented innovations and look forward to watching them scale, disrupt, and thrive on the foundation they’ve laid today.”

This year's list reflects a range in location and industry. Here's the full list of LexisNexis' 10 Most Innovative Startups in Texas, ranked by patent portfolios.

Caris (Dallas)
Apptronik (Austin)
Sage Geosystems (Houston)
HiddenLayer (Austin)
Fervo Energy (Houston)
Plus One Robotics (San Antonio)
Diligent Robotics (Austin)
HighRadius (Houston)
LTK (Dallas)
Eagle Eye Networks (Austin)

Sage Geosystems has partnered on major geothermal projects with the United States Department of Defense's Defense Innovation Unit, the U.S. Air Force and Meta Platforms. Sage's 3-megawatt commercial EarthStore geothermal energy storage facility in Christine, Texas, was expected to be completed by the end of last year.

Fervo Energy fully contracted its flagship 500 MW geothermal development, Cape Station, this spring. Cape Station is currently one of the world’s largest enhanced geothermal systems (EGS) developments, and the station will begin to deliver electricity to the grid in 2026. The company was recently named North American Company of the Year by research and consulting firm Cleantech Group and came in at No. 6 on Time magazine and Statista’s list of America’s Top GreenTech Companies of 2025. It's now considered a unicorn, meaning its valuation as a private company has surpassed $1 billion.

Meanwhile, HighRadius announced earlier this year that it plans to release a fully autonomous finance platform for the "office of the CFO" by 2027. The company reached unicorn status in 2020.

Fervo Energy — and a few other Greentown Labs companies — made a global list of clean tech companies. Photo via fervoenergy.com

New global report names top cleantech startups to keep an eye on

seeing green

Nine Greentown Labs members were recognized on a global list honoring cleantech companies.

Houston-based Fervo Energy was named to Cleantech Group’s Global Cleantech 100 report. Cleantech Group is a research-driven company that aids the public sector, private sector, investors, and also identifies, assesses, and engages with the innovative solutions around climate challenges.

Fervo, a geothermal energy company that specializes in a renewable energy technology that uses hot water to produce electricity, debuted in 2022 on the list, and was honored in the “Energy & Power” category for the second straight year.

The other Greentown Labs, which is dual located in Houston and Somerville, Massachusetts, companies recognized on the list include:

Amogy, a New York-based novel carbon-free energy system using ammonia as a renewable fuel
Carbon Upcycling Technologies, a Canadian waste and carbon utilization company
Dandelion Energy, New York-based company offering ground source heat pumps for most homes
Energy Dome, a Milan-based company addressing the problem of long-duration energy storage
e-Zinc, a Canadian company with a breakthrough electrochemical technology for energy storage
Nth Cycle, a Massachusetts company with sustainable metal refining
Raptor Maps, a Massachusetts company with a software platform for solar assets' performance data management
Sublime Systems, a Massachusetts companydeveloping a breakthrough process for low-carbon cement
WeaveGrid, a California company working with utilities, automakers, EVSEs, and EV owners to enable and accelerate the electrification of transportation

The number of nominations from the public, a panel, i3, awards and Cleantech Group totaled 25,435 from over 65 countries, which is a 61% increase from the 2023 nomination process. Winners were chosen from a short list of 330 companies by a panel of over 80 industry experts.

While not on the list, Beaumont-based Fortress Energy was mentioned for its electrolyzer supply agreement with Cleantech Group 100 winner Electric Hydrogen.

The Cleantech Group 100 was started 15 years ago.

“In 15 more years, we will be at 2039—by which time, a mere decade out from the ‘net-zero’ target of 2050,” Cleantech Group CEO Richard Youngman says in the report. “I would expect the composition of our annual list to have markedly changed again, and the leading upcoming private companies of that time to reflect such.”

Moelis hired Arash Nazhad as Houston-based managing director and co-head of its newly formed clean energy technology group. Photo via rice.edu

Investment banking firm launches cleantech group, names Houston-based co-leader

new hire

A Houston investment banker has been tapped as co-leader of a new team at investment bank Moelis & Co. that will mine the energy sector for cleantech deals.

Publicly traded Moelis said September 7 that it hired Arash Nazhad as Houston-based managing director and co-head of its newly formed clean energy technology group. Nazhad joins Moelis from financial services giant Citigroup, where he was managing director of its clean energy investment team. He worked at Citigroup for nine years.

During his tenure at Citigroup and, before that, Norwegian energy company Equinor (which operates a Houston office), Nazhad helped carry out more than $50 billion in M&A advisory activities and helped raise over $40 billion in capital for clients. He’s been involved in the rollout of more than 20 IPOs.

“Moelis is very well-positioned to help clients navigate the far-reaching implications of the energy transition that is underway,” Nazhad tells EnergyCapitalHTX. “Houston is a major player in the cleantech ecosystem, and I’m thrilled to join Moelis and leverage the breadth of the firm’s capital market solutions, advisory services, and global connectivity to support clients in this space.”

Nazhad will run the new Moelis group alongside Rick Polhemus, the investment bank’s San Francisco-based managing director. Polhemus, formerly an executive at investment bank Morgan Stanley, joined Moelis last October.

Jeff Raich, co-founder and co-president of Moelis, says the backgrounds of Nazhad and Polhemus make them “uniquely positioned to lead our efforts and expand opportunities for clients in this rapidly changing environment.”

“The energy transition that is underway demands integrated advisory services, access to capital, and strategic long-term planning,” adds Navid Mahmoodzadegan, co-founder and co-president of Moelis.

“Achieving net-zero emissions will require a significant increase in spending,” Mahmoodzadegan adds, “and our dedicated clean energy efforts better position us to be a seamless partner to our strategic, financial sponsor, and venture capital clients as we leverage our dynamic advisory practice and global connectivity.”

Nazhad and his colleagues will be searching for cleantech deals in a supercharged sector.

The International Energy Agency says global investment in cleantech is on track to hit $1.7 trillion this year. An impressive share of that money is being pumped into cleantech startups. Globally, VC funding in the cleantech sector soared from $1.9 billion in 2019 to $12.3 billion in 2022, according to management consulting firm Oliver Wyman.

Nazhad’s M&A experience should prove particularly beneficial for Moelis’ new cleantech arm.

A recent report from management consulting firm West Monroe indicates cleantech M&A “is picking up speed.” The report is based on the firm’s survey of 200 corporate and private equity executives.

“The overarching trend is that cleantech is no longer the stuff of speculation, but a viable sector benefiting from a confluence of tailwinds, including high energy demand, the need for secure supplies that complement fossil fuels, and more ambitious policymaking efforts targeting decarbonization,” the report says.

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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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