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Houston energy hub announces first cohort for new accelerator

green team

Energytech Nexus has named its first COPILOT accelerator cohort. Photo via Getty Images.

Energytech Nexus, a Houston-based hub for energy startups, has named its inaugural cohort of 14 companies for the new COPILOT accelerator.

COPILOT partners with Browning the Green Space, a nonprofit that promotes diversity, equity and inclusion (DEI) in the clean energy and climatech sectors. The Wells Fargo Innovation Incubator (IN²) at the National Renewable Energy Laboratory backs the COPILOT accelerator.

The eight-month COPILOT program offers mentorship, training and networking for startups. Program participants will be tasked with developing pilot projects for their innovations.

Two Houston startups are members of the first COPILOT class:

  • GeoFuels, housed at Houston’s Greentown Labs, has come up with a novel approach to hydrogen production that relies on geothermal power and methane decomposition.
  • PolyQor, which converts plastic waste into eco-friendly construction materials. Its flagship EcoGrete product is an additive for concrete that enhances its properties while reducing carbon emissions. PolyQor’s headquarters is at Houston’s Greentown Labs.

Other members of the COPILOT cohort are:

  • Birmingham, Alabama-based Accelerate Wind, developer of a wind turbine for commercial buildings.
  • Ann Arbor, Michigan-based Aquora Biosystems, which specializes in organic waste biorefineries.
  • Phoenix-based EarthEn Energy, a developer of technology for thermo-mechanical energy storage.
  • New York City-based Electromaim, which installs small hydro-generators in buildings’ water systems.
  • Chandler, Arizona-based EnKoat, an advanced materials company whose flagship product, the IntelliKoat System, is a patented two-layer thermal and weather barrier roof coating for flat and low-slope commercial buildings.
  • Calgary, Canada-based Harber Coatings, which manufactures electroless nickel coating and electroless nickel plating.
  • Dallas-based Janta Power, which designs and makes 3D solar towers.
  • Miami-based NanoSieve, a developer of gas remediation technology.
  • Palo Alto, California-based Popper Power, which has developed a platform that turns streetlight networks into resilient, maintenance-free distributed charging infrastructure.
  • Buffalo, New York-based Siva Powers America, developer of small wind turbines for farms, utility companies and others with annual energy needs of 300,000 to 2 million kilowatt-hours.
  • Los Angeles-based Thermoshade, which specializes in cooling panels for outdoor environments.
  • Waukesha, Wisconsin-based V-Glass, Inc., developer of a vacuum-insulated glass for affordable high-efficiency windows.

“These startups reflect the future of energy access and resilience innovation,” said Juliana Garaizar, founding partner of Energytech Nexus. “By connecting them directly with partners through

COPILOT, we’re helping them overcome the ‘pilot gap’ to build solutions that scale.”

The startups will run pilot projects along the Gulf Coast for their inventions.

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Manas Pathak's insights offer a glimpse into the future of energy storage and the innovations that companies like Earthen are bringing to the table. Photo via earthen.energy

Q&A: The breakthrough energy tech that could replace batteries forever

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In the rapidly evolving world of energy technology, few innovations hold as much promise as the solutions being developed by Earthen.

We recently had the opportunity to sit down with Manas Pathak, the CEO and co-founder of Earthen, to delve into the company's groundbreaking thermo-mechanical energy storage system. In this Q&A, we explore the core of Earthen's technology, its potential impact on the energy sector, and what the future holds.

Manas Pathak's insights offer a glimpse into the future of energy storage and the innovations that companies like Earthen are bringing to the table. As the energy sector continues to evolve, solutions like these will play a pivotal role in shaping a sustainable future.

Energy Tech Startups: Can you explain the unique approach Earthen takes with its thermo-mechanical energy storage using supercritical CO2?

Manas Pathak: Certainly. At Earthen, we've developed a thermo-mechanical energy storage solution that leverages supercritical CO2. This phase of CO2, achieved at high pressures and temperatures, behaves both as a liquid and a gas. It's central to our technology, offering a compact, safe, and cost-effective solution for long-duration energy storage. Think of it as a modern take on compressed air storage but using CO2 for superior results.

Q: With so many energy storage solutions emerging, what sets Earthen's system apart in terms of efficiency?

MP: Our system boasts a competitive round-trip efficiency of 78%, which is quite remarkable. To put it in perspective, this efficiency rivals that of lithium-ion batteries. The use of supercritical CO2 is central to achieving this efficiency, allowing us to harness its unique properties for optimal energy storage and retrieval.

Q: How does Earthen's technology integrate with existing infrastructure, like pipelines?

MP: One of the exciting applications of our technology is its ability to retrofit pipelines, converting them into energy storage assets. This means that existing infrastructure, like pipelines initially designed for other purposes, can be repurposed and utilized for energy storage, maximizing the use of resources and reducing the need for new constructions.

Q: What are Earthen's plans for the future, especially in terms of product launches and market presence?

MP: We're quite ambitious about our roadmap. We aim to launch our first commercial product by 2026-2027. As for our market strategy, we're targeting a diverse range of customer segments, from utility-scale energy storage to commercial-industrial spaces. Our mission is to democratize access to clean energy on a global scale, and we're taking concrete steps to realize that vision.

Q: Lastly, what inspired the creation of Earthen and its focus on equitable energy distribution?

MP: Growing up in India, I witnessed firsthand the disparities in energy consumption. The smallest homes often faced the longest power outages. This early realization highlighted the need for equitable energy distribution. At Earthen, our end goal is to see clean electrons reaching every corner of the globe, ensuring that everyone has access to reliable and sustainable energy.

———

This conversation has been edited for brevity and clarity. Click here to listen to the full episode.

Hosted by Jason Ethier and Nada Ahmed, the Digital Wildcatters’ podcast, Energy Tech Startups, delves into Houston's pivotal role in the energy transition, spotlighting entrepreneurs and industry leaders shaping a low-carbon future. Digital Wildcatters is a Houston-based media platform and podcast network, which is home to the Energy Tech Startups podcast.

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5 must-read Houston energy headlines: Veriten venture fund, ERock IPO + more

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Editor's note: The month of May brought big news for the Houston energy sector, including a flagship energy venture fund and IPO updates. Here are the five most-read EnergyCapital stories published May 14-29, 2026:

1. Houston investment firm closes $105M energy venture fund

Houston-based investment firm Veriten has announced the initial close of its second flagship energy venture fund with more than $105 million in capital commitments. Fund II will build on Veriten’s initial fund and aim to support “scalable technology solutions for energy, power and industrial applications.” Veriten is supported by over 50 strategic partnerships in the energy, power, industrial and technology sectors, including major players like Halliburton and Phillips 66.

2. Buoyed by $1.3B sales backlog, microgrid company ERock files for IPO

Another energy company in Houston is going public amid a flurry of energy IPOs. Houston-based ERock Inc., which specializes in utility-grade onsite microgrid systems for data centers and other customers, has filed paperwork with the U.S. Securities and Exchange Commission (SEC) to sell its shares on the New York Stock Exchange. The ERock filing follows the recent $1.9 billion IPO of Houston-based Fervo Energy, a provider of geothermal power that’s now valued at $7.7 billion.

3. Houston renewables developer signs agreement with Meta for new solar project

Houston-based EDP Renewables North America has signed a long-term power purchase agreement with Meta, the parent company of Facebook and Instagram, for its forthcoming Cypress Knee Solar project. The 250‑megawatt solar project will be built in Arkansas and is expected to come online by 2028. The company says the project will generate approximately $25 million in new revenue for Chicot County once operational.

4. Houston energy expert asks: Who pays when AI outruns the power grid?

For most of the past 20 years, U.S. electricity policy relied on predictable trends in demand. Electricity use, in most regions, increased gradually, forecasts were stable, and utilities adjusted the system in small steps. Power plants, transmission lines, and substations were generally added to reflect shifts in load, rather than growth, and costs were recovered through modest adjustments to customer bills. Growth in AI data centers has disrupted this model. A single facility can add as much electricity demand as a small town. That demand comes all at once, runs continuously, and has little tolerance for outages. If electricity service drops even briefly, computation stops, and services shut down. Ironically, data centers need reliable service, a point that their emergence is driving concern around for the rest of the grid.

5. Report shows geoscientists earn largest salary premium in Texas

A move to Texas bolsters earnings for some, and a new SmartAsset study has revealed the top professions where the median annual earnings in the Lone Star State exceed the national median. According to the report's findings, geoscientists have the biggest "Texas premium" and make a $159,903 median annual salary. Texas' salary for geoscientists is 61 percent higher than the national median for the same position (after adjusting for regional price parity).

Greentown names 5 climatech startups to manufacturing accelerator

Catalyst Cohort

Greentown Labs has named five climatech startups to its Go Make 2026 cohort, including one from Houston.

Greentown Go Make 2026 is in partnership with Shell Catalysts & Technologies and Technip Energies. Startups will be able to collaborate with leadership from Shell and Technip and have opportunities to work directly with their process engineering teams and develop potential partnerships, pilots and demonstrations, according to Greentown.

This year's manufacturing cohort focuses specifically on process technology and catalytic innovations, which, according to Greentown, have the potential to be a "critical enabler of the global energy transition." Greentown shares that 90 percent of chemical processes depend on catalysis, but traditional methods rely on fossil fuels and consume significant amounts of energy.

“Catalysis underpins the majority of industrial chemical processes, which together account for a significant share of global emissions, making it a critical lever for reducing carbon intensity while improving performance,” Georgina Campbell Flatter, CEO of Greentown, said in a news release. “Greentown Go Make 2026 is designed to close the gap between breakthrough innovation and industrial deployment. By connecting startups with Shell and Technip Energies’ technical expertise and global scale, we’re helping accelerate solutions that improve efficiency and drive industrial decarbonization.”

The five Greentown Go Make 2026 companies include:

  • Houston-based Biosimo, which makes scalable biochemicals from ethanol
  • Missouri-based Catalyxx, which transforms bioethanol into drop-in, cost-competitive, carbon-negative chemicals
  • Sydney, Australia-based HydGene Renewables, which produces low-carbon hydrogen and industrial chemicals from waste biomass
  • Switzerland-based TreaTech, which turns waste into renewable gas, water and minerals through catalytic hydrothermal gasification
  • California-based Unifuel, which has developed a chemical technology platform to make sustainable aviation fuel, renewable gasoline and other renewable chemicals

The cohort will be celebrated at a kickoff event in Houston at The Ion on June 9.

In addition to Greentown Go Make, Greentown also runs its Go Move (transportation), Go Energize (energy and electricity), Go Build (buildings), and Go Grow (food and agriculture) cohort-based programs. The climatech incubator announced its Go Build 2026 cohort in March. Read more here.

Houston developer launches AI-powered water platform to boost efficiency

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Houston real estate company McCord Development has launched an artificial-Intelligence-run water management platform, MizuWatch.

MizuWatch aims to help operators, districts, and municipalities detect leaks faster, reduce water loss and improve efficiency, according to the company. MizuWatch pulls data from supply sources, smart meters, historical usage and maintenance records, and combines them into a single platform. The AI system also uses visual mapping and digital twin technology to deliver near-real-time system insights.

“MizuWatch brings the right data together daily, so teams can see what’s happening now, intervene earlier and focus their resources where they have the greatest impact,” Jerzy Wielgus, chief product officer for MizuWatch, said in a news release.

MizuWatch was built to “scale across geographies and system sizes to help assist with water scarcity, aging infrastructure, and operational complexity,” according to the company. It was developed at Houston’s Generation Park, McCord’s 4,300-acre master planned commercial district. McCord was able to pilot the platform onsite to help manage its complex, real-world water systems at scale.

“Resilient infrastructure is a key factor for the companies choosing Generation Park,” Ryan McCord, CEO of McCord Development and Founder & CEO of MizuWatch, added in the release. “We made the decision to deploy smart meters, but no one knew how to use the data they generate. This is an opportunity across all infrastructure where sensors are deployed. What started as an internal solution has become a platform we believe can help stakeholders everywhere be more efficient in their operations, investment, and compliance.”

Last fall, Eli Lilly and Co. selected Generation Park for its $6.5 billion manufacturing plant. More than 300 locations in the U.S. competed for the factory. Bristol Myers Squibb Co., another pharmaceutical giant, also announced it is considering Generation Park for a new manufacturing hub earlier this month.

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