14 climatech startups join Greentown Houston in first half of 2026

green team

Meet some of Greentown's newest members. Photo courtesy of Greentown Labs

Climatech incubator Greentown Labs reports that 14 startups have joined its Houston community so far this year.

The companies are among 30 new startups to have joined Greentown Houston and Greentown Boston in 2026. Four of the companies are headquartered in Houston.

The startups are working on a range of "hydrogen-powered heavy-duty transport to AI-driven grid interconnection," according to Greentown.

The local startups that joined Greentown Houston include:

Houston-based Focis AI, which transforms industrial laser scans into structured asset intelligence to automatically identify, classify and map components in refineries and plants
Houston-based Iron Lattice, which develops next-generation memory technology for AI and high-performance computing that improves energy efficiency, endurance and scalability while remaining compatible with existing semiconductor manufacturing
Houston-based Orbital Arc, which is developing a new ion engine designed to improve the efficiency and scalability of spacecraft propulsion from low Earth orbit to deep space
Houston-based Sustain Energy LLC, which delivers cleaner, lower-cost fuel to industrial customers in pipeline-absent, underserved markets, cutting their energy costs and emissions with no infrastructure investment on their end

Other startups from around the world joined the Houston incubator in the same time period, including:

Ankara-based AIS Field, which develops robotic, AI-assisted non-destructive inspection systems, including submersible tank and boiler crawlers
San Francisco-based Armada AI, which builds rapidly deployable modular and edge data centers that run on local, stranded, or renewable power
San Francisco-based Armeta, which turns complex engineering drawings and legacy documentation into structured, usable data
Pittsburgh-based Atlas Robotics, which develops a Physical AI platform that powers autonomous material-handling robots and AI-guided forklifts
Ghana-based Cocoa Potash, which transforms high-emissions agricultural waste from cocoa, coconut, and palm-nut into organic potash, fertilizer and renewable energy
Israel-based Criaterra, which produces low-carbon, cement-free building materials
Italy-based ETAK, which manufactures modular reactors that convert solid waste into clean syngas
Kenya-based FelixFusion, which uses its Felix platform to model every grid connection point, including capacity, upgrade costs, and constraints
San Diego-based Gemini Energy, which builds next-generation fuel cells for data-center power
Tokyo-based Hibot, which develops robotic systems for inspecting and maintaining infrastructure in hazardous, hard-to-access environments
Austin-based Sheetak, which designs and manufactures thermoelectric coolers, generators, and assemblies for solid-state cooling and energy harvesting
The Netherlands-based ToPerform, which makes AI-powered, non-intrusive fouling sensors that monitor pipelines around the clock and predict the optimal cleaning time

Another 16 startups joined Greentown's Boston incubator. See the full list of new members here.

More than 100 startups joined Greentown last year, according to an end-of-year reflection shared by Greentown CEO Georgina Campbell Flatter. Read more about them here.

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Greentown Labs has named its Go Make 2026 cohort. Photo courtesy Greentown Labs

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 energy leader Barbara Burger shared her key takeaways from CERAWeek 2025 with InnovationMap. Photo courtesy of CERAWeek

Houston energy expert shares key takeaways from CERAWeek 2025

guest column

What a difference a year makes.

I have been coming to CERAWeek for as long as I can remember and the Agora track within CERAWeek since it originated. Although freshness likely distorts my thinking, I cannot remember a CERAWeek that seemed so different from the previous year's than this one.

This certainly isn’t a comprehensive summary of the conference, but some of my key take forwards from last week's events.

It’s all about power.

It seemed like everyone associated with the power value chain showed up. Developers, turbine manufacturers, utilities, oil and gas, renewables, geothermal, nuclear, storage, hyperscalers, and lots of innovative companies that aim to squeeze more out of the grid we already have. Most of the companies embraced the “all of the above” sentiment and despite moderators (and some key notes) attempt to force technology picks, most didn’t take the bait.

Practical is in.

Real issues – choke points in supply chains and the workforce, permit timing, cost increases in new generation – were openly discussed both on the stage and in the countless meetings and meet ups in partner rooms and in open spaces throughout the Hilton Americas and the GR Brown.

AI was everywhere.

While there was an understanding that not all the power load growth is coming from AI and Data Centers, that segment was getting all the attention. AI went beyond the retail and human enablement to AI for Optimization and AI for Innovation. The symbiosis of Tech and Energy was evident – power is a constraint, and AI is a game changer. S&P (CERAWeek’s organizer) did a great job of weaving this theme across the conference in both the Executive and Agora sessions.

More gas… and less hydrogen.

Whether it was LNG or gas to power or methane emission management, the US’s dominance in gas was front and center. Hydrogen was largely absent from the Executive talks and where it was topical in the Agora sessions, the need for better economics was made clear.

Consistency and balance are needed for this sector.

I am unsure whether it is a “stay calm and carry on” approach, as one leader fashioned, or rather a “carry on” message and imperative. Phrases like “one extreme to another” were heard on stage and in the hallways. The oil and gas CEOs talked more openly about their base business than they had in the last four years but they also talked about their decarbonization activities as well as commercialization of new technologies and value chains.

The macro-economic picture cast long shadows.

While few talks onstage addressed tariffs, consumer sentiment, inflation and unemployment (including those from government officials), the talks in the halls and private meetings certainly did. And while some argued that “the end justifies the means,” it wasn’t an argument that most seemed to buy into.

There is a lot of tripping up on labels.

Politics makes our sector more polarizing than it should or needs to be. Climatetech, Sustainability, Cleantech – some were labels with broad objectives, and some were meant to be binary or exclusionary. "Energy Transition" for some meant a binary replacement of fossil fuels with renewables, and for others, it meant an evolution of a system in multiple dimensions. In any event, a lot of energy is being spent on the labels and the narratives. I don’t have an easy answer for this other than to fall back to longer discussions and less use of labels that have lots of meanings and can quickly move a constructive discussion onto the third rail.

Collaboration is key and vital in this uncertain world.

The attendance of approximately 10,000 spanned the breadth of energy, those who make, move, and use it from around the globe—in other words, everyone—with a strong tone of inclusion. CERAWeek, after all, is all about convening and collaboration, and this played out in the programming and the networking. The messages about practicality, consistency, balance and “all of the above” and the storm clouds of the extremes seemed to put everyone in a similar boat: Am I being too hopeful that this will lead to more and more collaboration within the sector to advance the multiple aims of affordability, reliability, security, resiliency and sustainability?

The next-generation workforce is a strategic imperative.

The NextGen cohort in Agora was launched with 100+ graduate students from all over coming to see the energy sector close up. Kudos to S&P for making this investment and to all the conference attendees who spent time talking to the students about their research, their interests, and, importantly, sharing their career stories. Relationships were born at CERAWeek.

Houston showed well for the conference and Mother Nature played nice. The days were sunny and dry, and the evening temperatures fit the outdoor events well. The schedule and pace of CERAWeek is exhausting, and most people were worn out by Thursday.

CERAWeek 2025 is in the books; the connections made, and messages heard set the tone for the year ahead.

Until CERAWeek 2026.

------

Barbara J. Burger is a startup adviser and mentor. She is the independent Director of Bloom Energy and is an advisor to numerous organizations, including Lazard Inc., Syzygy Plasmonics, Energy Impact Partners and others. She previously led corporate innovation for two decades at Chevron and served on the board of directors for Greentown Labs.

Three startups with Houston ties and sustainable solutions were named winners of the Sustainable Aviation Challenge. Photo via Cameron Casey/Pexels

3 Houston climate tech companies win challenge for sustainable aviation

winner, winne

Greentown Houston companies have made the list of companies working toward sustainable aviation technology.

Cemvita and Verne, two Greentown Houston members, and C2V Initiative Year 1 participant Air Company were all named as winners of the World Economic Forum’s Sustainable Aviation Challenge, which will net the winners visibility opportunities, curated introductions to industry partners and potential funders, and other event invitations.

“We look forward to start collaborating with fellow winners and challenge partners to support the decarbonization of the aviation sector,” Cemvita writes in a statement on LinkedIn.

The Sustainable Aviation Challenge on UpLink included innovators who accelerate the adoption and development of sustainable aviation fuel and other propulsion solutions. Aviation accounts for 2 percent of global greenhouse gas emissions and air travel is projected to increase over this decade according to the International Energy Agency. The challenge is to reinvent flying and make it compatible with our global net-zero emissions targets. Decarbonizing aviation is one of the goals to help with the goal of global net-zero emissions.

Cemvita’s eCO2™ helped garner the Houston company its spot in the Sustainable Aviation Challenge. The eCO2 takes waste streams and carbon dioxide and uses them to produce valuable materials like plastics,proteins, and fuel feedstock through microbiology. Cemvita also plans to remove 250 million tons per year from the atmosphere by 2050, according to their website.

Last fall, Cemvita Corp. announced a new offtake arrangement with United Airlines. Cemvita's first full-scale sustainable aviation fuel plant will provide up to 1 billion gallons of SAF to United Airlines. The 20-year contract specifies that Cemvita will supply up to 50 million gallons annually to United.

See the full list of World Economic Forum’s Sustainable Aviation Challenge winners here.

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Texas Gov. Abbott broadens crackdown on data centers by halting all permits

data center crackdown

Responding to public outcry, Gov. Greg Abbott has stepped up his campaign against data centers by temporarily halting approval of environmental permits for data center projects.

This and previous moves by Abbott essentially amount to a temporary freeze on the development of new data centers in Texas. His actions come at a time when Texas’ stature as a data center hub has been soaring.

On Monday, Abbott directed the Texas Commission on Environmental Quality to stop issuing permits for data center developments until the Electric Reliability Council of Texas (ERCOT) and Public Utility Commission of Texas complete their review of projects seeking power grid connections.

With regulatory reviews underway and environmental permitting now frozen, state regulators currently cannot approve or deny requests from data center developers, Abbott said.

In a letter to the environmental quality commission’s executive director, Kelly Keel, Abbott said this directive is “consistent with my whole-of-government approach to ensure Texans’ natural resources and way of life are protected.”

Abbott previously ordered the Texas Water Development Board to require data centers to meet reporting requirements for water use. He also told the board to impose penalties for failure to comply with those requirements and to collaborate with ERCOT on its review.

Abbott launched his crackdown on data centers in August by ordering the Public Utility Commission and ERCOT to review data center projects in Texas. The audits will examine all data centers in the queue for interconnections before any more projects can move forward. Interconnections enable data centers to share power, data and computing resources.

In calling for those audits, Abbott cited concerns over data centers’ use of water and electricity, and the centers’ effect on infrastructure expenses and consumers’ utility rates.

“Simply put, Texans must come first,” the governor said.

During next year’s legislation session, Abbott will push for the elimination of state financial incentives for data center projects.

Ed Hirs, an energy fellow ⁠at the University of Houston, told Reuters that Abbott was backtracking on “his earlier pronouncements about data centers leading to lower electricity prices.”

Abbott’s actions come amid growing public backlash over data centers. A recent University of Houston survey found that nearly 63 percent of Houston-area residents opposed construction of a data center within a mile of their home.

Only 8 of 160 utility companies in Texas have filed wildfire response plans

Utility News

Only eight of 160 utility companies that operate in fire-prone areas of Texas have complied with a law that helps mitigate wildfires, lawmakers recently learned. The revelation comes on the heels of a chaotic wildfire season that has continued through the summer.

Lawmakers learned about the slow progress last week during a House State Affairs committee hearing, led by Rep. Ken King, who led the charge on the new law last year. The law under House Bill 145 requires utility companies to file wildfire mitigation plans to the Public Utility Commission.

The plans must include emergency protocols in the case of a wildfire, utility operating plans during high-risk weather conditions, management of grass, shrubs and other vegetation in areas that are at risk of wildfires, inspection of poles and other electric equipment and identified areas of wildfire risks within a utility’s service territory.

King, a Republican from Canadian where much of the wildfire damage occurred during the Panhandle wildfires, pressed utility companies on the lack of compliance.

“I’m very, very disappointed with the industry,” King said. “I think it’s imperative for anybody that has not filed that report to realize January is coming. You will file that wildfire mitigation plan, and if you’re dragging your feet, there’s no excuse good enough for me.”

Last year, King filed a slew of bills in response to the devastating Smokehouse Creek wildfires in the Texas Panhandle and parts of Oklahoma in 2024. It was the largest wildfire in Texas history, started when a decayed power pole owned by Xcel Energy snapped and landed in dry grass.

It was one of a spate of fires, the majority of which were linked to electrical ignitions.

This year alone has been a very active wildfire season. Nim Kidd, chief for the Texas Division of Emergency Management, said the state has helped local governments respond to more than 1,200 fires since the start of the year. The Ross Fire, which burned for more than three weeks in North Texas, was finally contained by firefighters last week. It’s now the second largest wildfire in the region’s history.

Two wildfires have broken out on Craig Cowden’s Panhandle ranch this year, both ignited by electrical equipment used by oil and gas companies. Cowden extinguished them, before they could spread beyond 5 acres — a fraction of the 20,000 acres he lost to wildfires in 2024.

Cowden was one of many ranchers who worked with lawmakers last year to address the problem. Over the years, several fires have started on Cowden’s land, most of which were the result of faulty or damaged electrical equipment.

“It’s kind of discouraging that there hasn’t been more proactively submitting their wildfire plan,” Cowden said.

Slow progress

There has been progress since the bill was filed. According to King, six fires have been linked to electrical issues this year, a significant decrease from 80 in 2024.

Connie Corona, director at the PUC, explained the lag in filings to lawmakers, stating that on top of the eight who have submitted, four more have given the PUC a date for when they intend to file their plans. Corona said another 135 have indicated to the PUC they are in the process of preparing their plan. This leaves 13 who have not communicated their plans to the PUC.

“We’ve asked for a heads-up notice of when the utility plans to file, and try to ensure that meets with the resources we have available,” Corona told lawmakers.

Corona said PUC staff had created a model wildfire mitigation plan that utility companies can use as a template. The model is intended to support smaller utility companies that lack sufficient resources to make their own plan. King asked Corona for a list of entities who complied with the requirement.

“When eight out of 160 have complied, and we’re sitting here in September, that doesn’t sound like a very good response to me,” King said.

A looming deadline

Brad Baldridge, interim president of Southwestern Public Service Company, which operates as Xcel Energy, told lawmakers what his company is doing to mitigate wildfires. The company was heavily criticized in the wake of the fires and has since deployed 97 wildfire detection cameras across its service territory. The cameras use AI to detect smoke and provide that information in real-time to utility personnel, local fire responders and emergency managers. It also uses Public Safety Power Shutoffs to turn off power in certain areas during critical wildfire conditions to prevent an electrical start. Baldridge said since 2024, the company has had to shut off power five times.

When King asked if the company had submitted its wildfire mitigation plans, Baldridge said it was submitted last month. It would have been submitted earlier, he said, but there was “tremendous” vegetation that grew from rain earlier in the year.

“All of our experts were focusing on wildfire mitigation,” Baldridge said. “Which delayed us a little bit in our filing.”

Mark Bell, CEO for the Association of Electric Companies of Texas, said they are using remote cameras and sensors to detect wildfires and are taking a more aggressive approach to manage vegetation. They also use power shutoffs in extreme conditions to minimize the risk. Bell testified that their utility companies were on track to file their wildfire mitigation plans.

“I think all the plans are going to be filed by the end of the year,” Bell said.

King reminded Bell that it’s September, and many haven’t filed yet.

“That’d be 148 (plans) approved before January,” King said.

Bell assured King that five of them have filed their plans and one is scheduled to file in October.

Corona, with the PUC, said there are also pole and maintenance plans due in January that will detail a complete inventory of those assets owned by utilities. King said the plan is to have the companies list everything they own in Texas, where it is and how old it is. However, he said they aren’t being compliant and lawmakers will see what happens in January.

Cowden, the rancher in the Panhandle, told the Tribune that while it’s not technically fire season anymore, there are still small fires that ignite around the area.

Cowden sees the amount of work being done by Xcel Energy to upgrade their electrical poles and infrastructure in the area. He said it’s different than before the wildfires in 2024. He thinks the fires got their attention.

“You can tell they’re making a conscious effort to try to upgrade their infrastructure,” Cowden said.

This story was originally published by The Texas Tribune and distributed through a partnership with The Associated Press.

Houston-based ‘grid in a box’ provider Branch Energy raises $33M

fresh funding

Houston-based startup Branch Energy, which offers a self-contained “grid in a box,” has collected $33 million in a Series B round.

Piva Capital and Clean Energy Ventures led the round, according to a news release. Active Impact Investments, Whitecap Venture Partners, Prelude Ventures, Zero Infinity Partners and Inovia Capital also contributed to the round.

In 2024, Branch raised $10.8 million in an oversubscribed Series A round.

Branch’s business model

Branch, which launched in 2021, says its proprietary Arc “grid in a box” contains everything needed to store and supply electricity. A container about the size of a parking space holds an industrial-grade battery, grid connection equipment, cooling capabilities, autonomous controls and cloud-based management software.

The startup installs Arc systems at warehouses, hotels, factories, stores and other commercial properties. Each system arrives on a flatbed truck and can be online within two days, Branch says.

Under Branch’s business model, a property owner avoids upfront payment for an Arc system.

Aside from equipping a host business with an Arc system, Branch serves as the business’ power provider. The startup says it guarantees savings on the host’s energy bills and delivers backup power during outages.

Branch generates revenue by sending the battery’s stored power to the grid or to customers like hyperscale data centers. It also benefits by shifting energy from low-cost periods at night to high-cost periods during daily power peaks.

The startup handles permitting, installation, insurance and operations for each Arc system. The host provides a parking-lot-sized plot of land for the system.

Alex Ince-Cushman, co-founder and CEO of Branch, says the startup’s “grid in a box” can quickly meet the substantial power requirements of hyperscale data centers.

“We can do it on the timeline of a delivery, not a construction project. Our customers don’t lift a finger, don’t pay a dime and get guaranteed savings,” Ince-Cushman said in the release.

Entering the Illinois market

Branch already operates in Texas and is entering the Illinois market.

PJM, which operates Illinois’ power grid, recently paved the way for major energy users like data centers to connect to the grid sooner when they rely on their own electricity generation. PJM’s territory covers roughly 1.2 million commercial buildings and represents 20 percent of U.S. power demand, according to Branch.

“Grids around the country need the distributed capacity that [the Arc] system can supply, especially in states with fast-growing power demand like Texas and Illinois,” Lee Larson, principal at Piva Capital added in the release.

To keep up with that demand, Branch plans to build tens of thousands of Arc systems in the U.S.

A multibillion-dollar company in the making?

Daniel Goldman, co-founder and managing partner of Clean Energy Ventures, said Branch holds the potential to become a multibillion-dollar competitor in the emerging market for distributed power.

“With utility-scale generation and storage challenged by interconnect and siting constraints, behind-the-meter commercial, and industrial storage sites have become the ultimate market opportunity with ease of interconnect, ability to combine distributed AI data centers, and identifiable savings in rapidly growing markets,” Goldman said.

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