Houston-based energy tech-oriented companies will be invited to the pitching event for Antwerp and Houston Cleantech Entrepreneurs from 2 to 5 pm on December 3 at The Ion. Photo via the Ion

A delegation of nine startups from Antwerp, Belgium, along with industry experts will visit Houston from December 2 through December 6, which will include The Greater Houston Partnership, Greentown Labs, The Ion, and The Cannon.

The delegation will represent cleantech, sustainable chemistry, and energy tech sectors to engage with Houston’s energy transition ecosystem and identify collaboration and investment opportunities.

Houston-based energy tech-oriented companies will be invited to the pitching event for Antwerp and Houston Cleantech Entrepreneurs from 2 to 5 pm on December 3 at The Ion. Interested entrepreneurs can register at this link.

Antwerp and Houston are considered two of the world's largest petrochemical hubs, and also part of the leading innovators in the cleantech, sustainable chemistry, and energy tech sectors. The event will be organized by the Port of Antwerp-Bruges, BlueChem (an Antwerp-based sustainable chemistry incubator), the city of Antwerp, and Flanders Investment and Trade.

“Antwerp and Houston are known for their ports and petrochemical industries, but fewer people realize the remarkable cleantech, sustainable chemistry, and energytech ecosystems that have emerged around these hubs,” Nathalie Mathys, head of office at FIT Houston, says in a news release.

The Port of Antwerp-Bruges is known for innovating new technologies, which includes 5G, digital twins, artificial intelligence, drones, and advanced sensors. Antwerp has over 350 startups and nine incubators and accelerators.

“This delegation visit highlights the potential for collaboration between two of the most dynamic regions in these fields, paving the way for a cleaner, more sustainable future,” adds Mathys.

Huntsman Corp. celebrated the opening of the new R&D center in Tienen, Belgium, this month. Photo via Huntsman

Houston energy company celebrates new innovation center in Belgium

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A Houston-based global leader of innovative chemistries strengthened its research and development capabilities by opening a new international innovation center.

Huntsman Corp. celebrated the opening of the new R&D center in Tienen, Belgium, on June 13.

The 11,000-square-meter facility is a world-scale analytical laboratory; two machine halls; and fully equipped and automated product testing facilities. According to the company, the facility will assist with the “journey from the formulation of initial ideas at lab scale through to the manufacture of novel systems and samples ready for customers to trial.”

The innovation center will house more than 100 scientists from the company's polyurethanes and performance products. In key markets, which include adhesives, coatings and sealants; automotive; elastomers; energy; furniture and bedding, and insulation, will support the application of Huntsman technologies. The polyurethanes division is a global leader in MDI-based polyurethanes, which serves more than 3,000 customers in over 90 countries worldwide.

The inauguration event on June 13 was attended by more than 100 customers, suppliers, the mayor of Tienen and business partners. The event also included presentations from Huntsman's Chairman and Chief Executive Officer Peter Huntsman, and Tony Hankins, President of Huntsman's polyurethane business.

"Today marks a significant milestone as we officially open the doors to our new European innovation center, a facility dedicated to creativity, collaboration and progress," Huntsman says in a news release. "We already have a rich legacy of innovation in Belgium. This center reflects our continuing commitment to exploring new ideas and turning imaginative concepts into practical solutions that can make a positive impact in the world."

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40+ climatetech startups join Greentown, including a dozen from Houston

green team

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."

NRG makes latest partnership to grow virtual power plant

VPP partners

Houston-based NRG Energy recently announced a new long-term partnership with San Francisco-based Sunrun that aims to meet Texas’ surging energy demands and accelerate the adoption of home battery storage in Texas. The partnership also aligns with NRG’s goal of developing a 1-gigawatt virtual power plant by connecting thousands of decentralized energy sources by 2035.

Through the partnership, the companies will offer Texas residents home energy solutions that pair Sunrun’s solar-plus-storage systems with optimized rate plans and smart battery programming through Reliant, NRG’s retail electricity provider. As new customers enroll, their stored energy can be aggregated and dispatched to the ERCOT grid, according to a news release.

Additionally, Sunrun and NRG will work to create customer plans that aggregate and dispatch distributed power and provide electricity to Texas’ grid during peak periods.

“Texas is growing fast, and our electricity supply must keep pace,” Brad Bentley, executive vice president and president of NRG Consumer, said in the release. “By teaming up with Sunrun, we’re unlocking a new source of dispatchable, flexible energy while giving customers the opportunity to unlock value from their homes and contribute to a more resilient grid

Participating Reliant customers will be paid for sharing their stored solar energy through the partnership. Sunrun will be compensated for aggregating the stored capacity.

“This partnership demonstrates the scale and strength of Sunrun’s storage and solar distributed power plant assets,” Sunrun CEO Mary Powell added in the release. “We are delivering critical energy infrastructure that gives Texas families affordable, resilient power and builds a reliable, flexible power plant for the grid.”

In December, Reliant also teamed up with San Francisco tech company GoodLeap to bolster residential battery participation and accelerate the growth of NRG’s virtual power plant network in Texas.

In 2024, NRG partnered with California-based Renew Home to distribute hundreds of thousands of VPP-enabled smart thermostats by 2035 to help households manage and lower their energy costs. At the time, the company reported that its 1-gigawatt VPP would be able to provide energy to 200,000 homes during peak demand.