Twelve local startups have joined Greentown Houston, along with others from around the world. Photo courtesy Greentown Labs.

More than 40 climatetech startups joined the Greentown Labs Houston community in the second half of 2025. Twelve hail from the Bayou City.

The companies are among a group of nearly 70 that joined the climatetech incubator, which is co-located in Houston and Boston, in Q3 and Q4.

The new companies that have joined the Houston incubator specialize in a variety of clean energy applications, from green hydrogen-producing water-splitting cycles to drones that service wind turbines.

The local startups that joined Greentown Houston include:

  • Houston-based Wise Energie, which delivers turnkey microgrids that blend vertical-axis wind, solar PV, and battery storage into a single, silent system.
  • The Woodlands-based Resollant, which is developing compact, zero-emissions hydrogen and carbon reactors to provide low-cost, scalable clean hydrogen and high-purity carbon for the energy and manufacturing sectors.
  • Houston-based ClarityCastle, which designs and manufactures modular, soundproof work pods that replace traditional drywall construction with reusable, low-waste alternatives made from recycled materials.
  • Houston-based WattSto Energy, which manufactures vanadium redox flow batteries to deliver long-duration storage for both grid-scale projects and off-grid microgrids.
  • Houston-based AMPeers, which delivers advanced, high-temperature superconductors in the U.S. at a fraction of traditional costs.
  • Houston-based Biosimo, which is developing bio-based platform chemicals, pioneering sustainable chemistry for a healthier planet and economy.
  • Houston-based Ententia, which offers purpose-built, generative AI for industry.
  • Houston-based GeoKiln Energy Innovation, which is developing a new way to produce clean hydrogen by accelerating natural geologic reactions in iron-rich rock formations using precision electrical heating.
  • Houston-based Timbergrove, which builds AI and IoT solutions that connect and optimize assets—boosting visibility, safety, and efficiency.
  • Houston-based dataVediK, which combines energy-domain expertise with advanced machine learning and intelligent automation to empower organizations to achieve operational excellence and accelerate their sustainability goals.
  • Houston-based Resonant Thermal Systems, which uses a resonant energy-transfer (RET) system to extract critical minerals from industrial and natural brines without using membranes or grid electricity.
  • Houston-based Torres Orbital Mining (TOM),which develops autonomous excavation systems for extreme environments on Earth and the moon, enabling safe, data-driven resource recovery and laying the groundwork for sustainable off-world industry.

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

More than 100 startups joined Greentown this year, according to an end-of-year reflection shared by Greentown CEO Georgina Campbell Flatter.

Flatter joined Greentown in the top leadership role in February 2025. She succeeded former CEO and president Kevin Knobloch, who stepped down in July 2024.

"I moved back to the United States in March 2025 after six years overseas—2,000 miles, three children, and one very patient husband later. Over these months, I’ve had the chance to hear from the entrepreneurs, industry leaders, investors, and partners who make this community thrive. What I’ve experienced has left me brimming with urgent optimism for the future we’re building together," she said in the release.

According to Flatter, Greentown alumni raised more than $2 billion this year and created more than 3,000 jobs.

"Greentown startups and ecosystem leaders—from Boston, Houston, and beyond—are showing that we can move further and faster together. That we don’t have to choose between more energy or lower emissions, or between increasing sustainability and boosting profit. I call this the power of 'and,'" Flatter added. "We’re working for energy and climate, innovation and scale, legacy industry and startups, prosperity for people and planet. The 'and' is where possibility expands."

Houston Innovation Awards nominations are open through August 31. Photo courtesy of InnovationMap

Nominations close Aug. 31 for Houston Innovation Awards — submit today

Awards Season

Calling all Houston energy innovators: The Houston Innovation Awards return this fall to celebrate the best and brightest in the Houston innovation ecosystem, and that includes those leading the energy transition.

Presented by InnovationMap, the fifth annual Houston Innovation Awards will take place November 13 at Greentown Labs.

The awards program will honor the top startups and innovators in Houston across 10 categories, and we're asking you to nominate the most deserving Houston innovators and innovative companies, including those in the energy transition sector.

This year's categories are:

  • Minority-founded Business, honoring an innovative startup founded or co-founded by BIPOC or LGBTQ+ representation.
  • Female-founded Business, honoring an innovative startup founded or co-founded by a woman.
  • Energy Transition Business, honoring an innovative startup providing a solution within renewables, climatetech, clean energy, alternative materials, circular economy, and beyond.
  • Health Tech Business, honoring an innovative startup within the health and medical technology sectors.
  • Deep Tech Business, honoring an innovative startup providing technology solutions based on substantial scientific or engineering challenges, including those in the AI, robotics, and space sectors.
  • Startup of the Year (People's Choice), honoring a startup celebrating a recent milestone or success. The winner will be selected by the community via an interactive voting experience.
  • Scaleup of the Year, honoring an innovative later-stage startup that's recently reached a significant milestone in company growth.
  • Incubator/Accelerator of the Year, honoring a local incubator or accelerator that is championing and fueling the growth of Houston startups.
  • Mentor of the Year, presented by Houston Community College, honoring an individual who dedicates their time and expertise to guide and support budding entrepreneurs.
  • Trailblazer, honoring an innovator who's made a lasting impact on the Houston innovation community.

Nominations may be made on behalf of yourself, your organization, and other leaders and institutions in the local innovation scene. The nomination period closes on August 31, so don't delay — nominate today at this link, or fill out the embedded form below.

A panel of esteemed judges will review the nominations, and determine the finalists and winners. Finalists will be unveiled on InnovationMap.com in early October, and the 2025 Houston Innovation Awards winners will be announced live at our event on November 13.

Tickets will go on sale this fall. Stay tuned for that announcement.

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Interested in Innovation Awards sponsorship opportunities? Please contact sales@innovationmap.com.

Houston-based Solidec has closed an oversubscribed pre-seed round led by New Climate Ventures. Photo courtesy Greentown Labs.

Houston clean-chemicals startup Solidec raises $2M to scale tech

fresh funding

Solidec, a Houston startup that specializes in manufacturing “clean” chemicals, has raised more than $2 million in pre-seed funding.

Houston-based New Climate Ventures led the oversubscribed pre-seed round, with participation from Plug and Play Ventures, Ecosphere Ventures, the Collaborative Fund, Safar Partners, Echo River Capital and Semilla Climate Capital, among other investors.

Solidec’s approach to chemical manufacturing replaces centralized infrastructure with modular on-site production using only air, water and electricity. Solidec’s platform is powered by modular reactors capable of producing widely used chemicals such as hydrogen peroxide, formic acid, acetic acid and ethylene.

“We’ve known the Solidec team for almost two years and have developed a high degree of conviction in the team, their technology, and their go-to-market strategy,” Eric Rubenstein, managing partner at New Climate Ventures, said in a news release. “We’re particularly excited about Solidec’s ability to produce many different widely used chemicals. It gives them critical flexibility to expand and serve a broad customer base.”

Solidec is initially focusing on hydrogen peroxide.

“Traditionally, hydrogen peroxide is produced in centralized, energy-intensive facilities using carbon-intensive inputs, then transported long distances, resulting in a significant carbon footprint,” Ryan DuChanois, co-founder and CEO of Solidec, said in the release. “Solidec’s modular reactor produces clean chemicals like hydrogen peroxide on-site, in fewer steps, and with less energy, slashing emissions, supply-chain risk, and cost.”

Solidec said its technology “is poised to disrupt the multibillion-dollar commodity and chemical industries.” The company has already signed up several customers.

The startup, a Rice University spinout, is a graduate of the Chevron Catalyst Program and a member of Greentown Labs Houston. It was cofounded by DuChanois, Haotian Wang and Yang Xia.

NanoTech is targeting new overseas markets for its energy efficiency products. Photo via Getty Images

Promising Houston startup expands energy efficiency product to Middle East, Singapore

big move

NanoTech Materials has announced a big expansion for its business.

The Houston company, which created a roof coating using nanotechnology that optimizes energy efficiency, has partnered with Terminal Subsea Solutions Marine Service SP to bring its products to the Gulf Cooperation Council and Singapore. TSSM will become a partner of Houston’s NanoTech Materials products, which will include the Cool Roof Coat, Vehicular Coat, and Insulative Coat for the GCC countries and Singapore.

NanoTech Materials technology that ranges from roof coatings on mid- to low-rise buildings to shipping container insulation to coating trucks and transportation vehicles will be utilized by TSSM in the partnership. NanoTech’s efforts are focused on heat mitigation that can reduce energy costs, enhance worker safety, and minimize business risks in the process.

“Businesses and communities within the GCC and Singapore feel the impact of extreme temperatures and longer Summers more acutely than any other region in the world,” Mike Francis, CEO of NanoTech Materials, says in a news release. “We have an opportunity to make a real impact here through reduced energy load, cooler and safer working conditions, and a reduced carbon emissions output from the hottest, driest place on earth. We are incredibly excited to be partnering with our colleagues at TSSM to bring this powerful technology to the region.”

One of the areas that will benefit from this collaboration is the Middle East. The GCC region is characterized by a desert climate, which has average annual temperature reaching 107.6°F and summer peaks climbing as high as 130°F. The effects of these extreme conditions can be dangerous for workers especially with strict labor laws mandating midday work bans under black flag conditions, which can result in productivity losses as well.

NanoTech’s proprietary technology, the Insulative Ceramic Particle (ICP), will be used to address challenges in energy efficiency and heat control in the logistics and built environment sector. The platform can be integrated into many applications, and the impact can range from reducing greenhouse gas emissions to protecting communities that are wildfire-prone. The core of the technology has a lower conductivity than aerogels. It also has a “near-perfect emissivity score” according to the company. The NanoTech ICP is integrated with base matrix carriers; building materials, coatings, and substrates, which gives the materials heat conservation, rejection, or containment properties.

By combining the ICP into an acrylic roof coating, NanoTech has created the Cool Roof Coat, which reflects sunlight and increases the material's heat resistance. This can lower indoor temperatures by 25 to 45°F in single-story buildings and reduce the carbon emissions of mid to low-rise buildings. This can potentially equal energy savings from 20 percent up to 50 percent, which would surpass the average 15 percent savings of traditional reflective only coatings.

“This technology will have a huge impact on supporting the region's aggressive climate initiatives, such as Saudi Arabia’s Green Initiative, aiming to reduce carbon emissions by 278 million tons annually by 2030,” Jameel Ahmed, managing director at TSSM, says in the release. “The regional efforts to enhance climate action and economic opportunities through substantial investments in green technologies and projects are evident, and we are proud to be offering a product that can make a difference.”

NanoTech says its coating maintains its effectiveness over time and doesn’t suffer UV degradation issues which are helpful, especially in extreme weather conditions workers and businesses face in regions like the Middle East.

IBM and Boxes recently partnered to integrate the IBM watsonx Assistant into Boxes devices, providing a way for consumer packaged brands to find out more than ever about what its customers like and want. Photo courtesy of Boxes

Houston startup taps new corporate partner for AI-backed sustainability consumer tech

out of the boxes

With the help of a new conversational artificial intelligence platform, a Houston startup is ready to let brands get up close and personal with consumers while minimizing waste.

IBM and Boxes recently partnered to integrate the IBM watsonx Assistant into Boxes devices, providing a way for consumer packaged brands to find out more than ever about what its customers like and want.

The Boxes device, about the size of a 40-inch television screen, dispenses products to consumers in a modern and sustainable spin on the old-fashioned large vending machine.

CEO Fernando Machin Gojdycz learned that business from his entrepreneur father, Carlos Daniel Machin, while growing up in Uruguay.

“That’s where my passion comes from — him,” Gojdycz says of his father. In 2016, Gojdycz founded Boxes in Uruguay with some engineer friends

Funded by a $2,000 grant from the University of Uruguay, the company's mission was “to democratize and economize affordable and sustainable shopping,” in part by eliminating wasteful single-use plastic packaging.

“I worked for one year from my bedroom,” he tells InnovationMap.

Fernando Machin Gojdycz founded Boxes in Uruguay before relocating the company to Greentown Houston. Photo courtesy of Boxes

The device, attached to a wall, offers free samples, or purchased products, in areas of high foot traffic, with a touch-screen interface. Powered by watsonx Assistant, the device asks survey questions of the customer, who can answer or not, on their mobile devices, via a QR code.

In return for completing a survey, customers can get a digital coupon, potentially generating future sales. The software and AI tech tracks sales and consumer preferences, giving valuable real-time market insight.

“This is very powerful,” he says.

Boxes partnered in Uruguay with major consumer brands like Kimberly-Clark, SC Johnson and Unilever, and during COVID, pivoted and offered PPE products. Then, with plans of an expansion into the United States, Boxes in 2021 landed its first U.S. backer, with $120,000 in funding from startup accelerator Techstars.

This led to a partnership with the Minnesota Twins, where Boxes devices at Target Field dispensed brand merchandise like keychains and bottles of field dirt.

Gojdycz says while a company in the Northeast is developing a product similar in size, Boxes is not “targeting traditional spaces.” Its software and integration with AI allows Boxes to seamlessly change the device screen and interface, remotely, as well.

Boxes aims to provide the devices in smaller spaces, like restrooms, where they have a device at the company's headquarters at climate tech incubator Greentown Labs. Boxes also recently added a device at Hewlett Packard Enterprise headquarters in Spring, as part of HPE’s diversity startup program.

Boxes hopes to launch another sustainable innovation later this year, in universities and supermarkets. The company is also developing a device that would offer refillable detergent and personal cleaning products like shampoo and conditioner with a reusable container.

Since plastic packaging accounts for 40 percent of retail price, consumers would pay far less, making a huge difference, particularly for lower-income families, he says.

“We are working to make things happen, because we have tried to pitch this idea,” he says.

Some supermarket retailers worry they may lose money or market share, and that shoppers may forget to bring the refill bottles with them to the store, for example.

“It’s about..the U.S. customer,” he says, “….but we think that sooner or later, it will come.”

Boxes has gotten funding from the accelerator startup branch of Houston-based software company Softeq, as well as Mission Driven Finance, Google for Startups Latino Founders Fund, and Right Side Capital, among others.

“Our primary challenges are scaling effectively with a small, yet compact team and maintaining control over our financial runway,” Gojdycz says.

The company has seven employees, including two on its management team.

Gojdycz says they are actively hiring, particularly in software and hardware engineering, but also in business development.

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This article originally ran on InnovationMap.

Do you think you know the best of Houston's innovation community? Now's your chance to shine the spotlight on a deserving innovator. Photo via Getty Images

Annual awards program calls for sustainable startups, innovative corporates in Houston

nominations open

Calling all Houston innovators in the energy transition space — an annual awards program wants to recognize you.

For the third year, InnovationMap, EnergyCapital's sister site, is hosting an awards program that will recognize the best of the rest in Houston's innovation ecosystem. The awards program will be on Wednesday, November 8, at Silver Street Studios, with tickets going on sale later this month.

The program features a dozen awards this year — some of which should be interesting to the Houston energy transition community:

  • Hardtech Business, honoring an innovative company developing and commercializing a physical technology
  • Digital Solutions Business, honoring an innovative company developing and programming a digital solution to a problem in an industry
  • Sustainability Business, honoring an innovative company providing a solution within renewables, climatetech, clean energy, alternative materials, circular economy, and beyond
  • Corporate of the Year, honoring a corporation that supports startups and/or the Houston innovation community

The nomination period — which includes submitting nominations on behalf of yourself or others — will close September 19. Nominees will be sent an application, which will be due October 4. A panel of judges will review the applications and finalists will be announced and notified ahead of the event.

If you are interested in sponsorship opportunities, please reach out to misti@gowmedia.com.

Click here to submit a nomination or see form below.

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CERAWeek crowns winners of 2026 clean tech pitch competition

top teams

Twelve teams from around the country, including several from Houston, took home top honors at this year's Energy Venture Day and Pitch Competition at CERAWeek.

The fast-paced event, held March 25, put on by Rice Alliance, Houston Energy Transition Initiative and TEX-E, invited 36 industry startups and five Texas-based student teams focused on driving efficiency and advancements in the energy transition to present 3.5-minute pitches before investors and industry partners during CERAWeek's Agora program.

The competition is a qualifying event for the Startup World Cup, where teams compete for a $1 million investment prize.

PolyJoule won in the Track C competition and was named the overall winner of the pitch event. The Boston-based company will go on to compete in the Startup World Cup held this fall in San Francisco.

PolyJoule was spun out of MIT and is developing conductive polymer battery technology for energy storage.

Rice University's Resonant Thermal Systems won the second-place prize and $15,000 in the student track, known as TEX-E. The team's STREED solution converts high-salinity water into fresh water while recovering valuable minerals.

Teams from the University of Texas won first and second place in the TEX-E competition, bringing home $25,000 and $10,000, respectively. The student winners were:

Companies that pitched in the three industry tracts competed for non-monetary awards. Here are the companies named "most-promising" by the judges:

Track A | Industrial Efficiency & Decarbonization

Track B | Advanced Manufacturing, Materials, & Other Advanced Technologies

  • First: Licube, based in Houston
  • Second: ZettaJoule, based in Houston and Maryland
  • Third: Oleo

Track C | Innovations for Traditional Energy, Electricity, & the Grid

The teams at this year's Energy Venture Day have collectively raised $707 million in funding, according to Rice. They represent six countries and 12 states. See the full list of companies and investor groups that participated here.

TotalEnergies $1B payout shows evolution in Trump's anti-wind strategy

Shift in the Winds

The Trump administration’s $1 billion payout to TotalEnergies to walk away from U.S. offshore wind development is a novel tactic against the industry that supporters see as creative — but opponents see as foolish and extreme.

The Interior Department announced March 23 that TotalEnergies agreed to what is essentially a refund of its leases for projects off the coasts of North Carolina and New York, and will invest the money in a liquefied natural gas export terminal in Texas and other fossil fuel projects instead. The department hailed it as an “innovative agreement” with the French energy giant so that the "American people will no longer pay for ideological subsidies that benefited only the unreliable and costly offshore wind industry.”

The tactical shift comes after federal courts have thwarted President Donald Trump's efforts to stop offshore wind through executive action.

U.S. Sen. Chuck Schumer, a New York Democrat, told The Associated Press that the payment “sets a dangerous precedent and is a shortsighted misuse of taxpayer dollars.”

Robin Shaffer, president of the anti-offshore wind group Protect Our Coast New Jersey, applauded what he called “out of the box” thinking. Shaffer said after losing in the courts, the administration needed a way to take back leases that never should have been issued because of the harm offshore wind development causes to the marine environment.

“The Trump administration has been relentlessly creative in its efforts to stop offshore wind development in the U.S.," he said.

While the Republican president has been particularly hostile to offshore wind, he has also blocked dozens of clean energy projects and canceled billions of dollars in grants to promote clean energy, which he derides as the “Green New Scam.” This comes at a time when the U.S. is trying to boost power supplies in an artificial intelligence race against China and keep electricity bills from rising even higher.

The Iran war has also dealt a massive energy shock to the global economy by choking off most exports of crude oil and liquefied natural gas through the Strait of Hormuz.

A vow to stop offshore wind

On the campaign trail, Trump vowed to end the offshore wind industry as soon as he returned to the White House. Trump said wind turbines are horrible and expensive and pose a threat to birds and other wildlife.

Connecticut is getting power from Revolution Wind, an offshore wind project, and estimates it will lower wholesale energy costs for the state. The National Audubon Society, which is dedicated to the conservation of birds, has said climate change is a greater threat to birds.

Trump has long opposed offshore wind energy. In 2015, he lost his yearslong battle to stop an offshore wind farm near Aberdeen in eastern Scotland when Britain’s Supreme Court unanimously ruled against him. Trump claimed the 11 turbines would spoil the view from his golf course.

He wants to boost production of oil, natural gas and coal, which cause climate change, because he argues that doing so would give the U.S. the lowest-cost energy and electricity of any nation in the world.

His first day back in office, he acted on his campaign promise, signing an executive order temporarily halting offshore wind lease sales in federal waters and pausing permitting for all wind projects.

The deal comes after the administration is thwarted by the courts

U.S. District Judge Patti Saris vacated Trump’s executive order blocking wind energy projects on Dec. 8, declaring it unlawful as she sided with state attorneys general from 17 states and Washington, D.C., who challenged the order. The administration is appealing.

Two weeks later, the administration ordered that construction stop on five major East Coast offshore wind projects, citing national security concerns. Developers and states sued, and federal judges allowed all five to resume construction, essentially concluding that the government didn't show that the national security risk was so imminent that construction must halt.

TotalEnergies wasn't one of those; it had already paused its two projects soon after Trump was elected. And the company has now pledged not to develop any new offshore wind projects in the United States. CEO Patrick Pouyanné said the refunded lease fees will finance the construction of a liquefied natural gas plant in Texas and the development of its oil and gas activities, calling it a “more efficient use of capital” in the U.S.

Kit Kennedy, who directs the power division at the Natural Resources Defense Council, said the proposed payment to TotalEnergies was a “boondoggle” that “transfers nearly $1 billion from American taxpayers to a foreign corporation and the oil and gas industry.”

Why is the U.S. using taxpayer dollars “to not develop power when we need energy?” she asked, calling the Trump administration deal a “scam” and harmful to the U.S. economy and environment.

Carl Tobias, a University of Richmond Law School professor who has been following the lawsuits, called it “unorthodox.”

Democrats criticize stopping offshore wind when energy prices are spiking

As crude oil and gasoline prices surge, Democrats in Virginia said the U.S. should be strengthening its energy independence and resilience. Virginia started receiving power on March 23 from an offshore wind project targeted by Trump.

“Giving an energy company $1 billion of taxpayer money to pack up its jobs and invest elsewhere — in the middle of an unpopular and unwise war that is spiking energy costs — is beyond idiotic,” U.S. Sen. Tim Kaine said in a statement to AP.

U.S. Rep. Chellie Pingree, a Maine Democrat, questioned whether the payout is legal under appropriations law and said she would question Interior Secretary Doug Burgum about it at the upcoming budget hearings.

Dozens of commercial leases issued by the Bureau of Ocean Energy Management remain active for wind energy development in the U.S.

Abigail Dillen, president of Earthjustice, said she wouldn't attempt to guess whether the Trump administration will pay to stop any others, but clearly it is willing to go to extreme measures.

“Will they do this again? Maybe,” she said.

Baker Hughes teams up with Google and XGS on energy tech

project partners

Houston-based energy technology company Baker Hughes recently forged two significant partnerships—one with tech titan Google and another with geothermal power startup XGS Energy.

Under the Google Cloud partnership, announced at CERAWeek 2026, Baker Hughes technology will be paired with Google Cloud AI and data analytics to improve the performance of AI data centers’ power systems and energy-transfer machinery. Furthermore, the two companies will explore opportunities for data centers to extract greater value from underused industrial and operational data.

“Infrastructure that powers the growing demand for AI and cloud computing is becoming one of the most critical drivers of global electricity needs,” Lorenzo Simonelli, chairman and CEO of Baker Hughes, said in the announcement.

“Through this partnership with Google Cloud, we are bringing together world-class power technologies and digital capabilities to help data center operators improve efficiency, enhance reliability, and accelerate progress toward lower-carbon operations,” he added.

Through the XGS partnership, Baker Hughes will provide engineering services for XGS’ 150-megawatt geothermal project in New Mexico. The project will supply energy to the Public Service Co. of New Mexico grid in support of New Mexico data centers operated by Meta Platforms, the parent company of Facebook and Instagram.

“With this single project for Meta in New Mexico, XGS will increase the state’s operating geothermal capacity by tenfold,” says Ghazal Izadi, chief operating officer at XGS.

“Geothermal energy plays a vital role in delivering reliable, cleaner power at scale,” added Maria Claudia Borras, chief growth and experience officer and interim executive vice president of industrial and energy technology at Baker Hughes. “By collaborating with XGS at this early stage, we are applying our ground‑to‑grid capabilities to reduce technical risk, accelerate reservoir validation, and engineer an integrated solution to deliver … power efficiently and reliably.”

California-headquartered XGS, which has a major presence in Houston, is known for its proprietary solid-state geothermal system that uses thermally conductive materials to deliver affordable energy wherever there is hot rock.