3 energy transition companies with Houston ties pitch at international conference

seeing green

Three Houston companies pitched their energy transition technologies at an international competition. Photo via Getty Images

It's all hands on deck for pioneering technology to advance the energy transition and climatetech, and three companies with a Houston presence just took the national stage to showcase their climate change solutions.

The United Nations' 2021 COP26, hosted by the Net Zero Technology Centre in Glasgow, featured 10 startup organizations from across the globe battling it out to be crowned the Clean Energy Startup Champion.

The Ion Houston nominated five startups to the competition, and three made it to the finals. Syzygy Plasmonics, which is developing a new type of photocatalytic chemical reactor to reduce both cost and emissions for major commodity chemicals, claimed third place in the competition. The other two Ion nominees that pitched were:

  • S2G Energy, an Ion Smart Cities Accelerator participant, and cloud-based Energy Assistant platform that collects data and manages devices from almost any source to capture efficiency opportunities
  • Cemvita Factory, which applies synthetic biology to reverse climate change and transform CO2 into a usable material
"The Ion partnered with Net Zero with the vision to bring innovative and transformative startups out of the North/Central and South American market to the stage in Glasgow," says Jan E. Odegard, executive director of The Ion, in a statement. "We took a look around our own ecosystem both at The Ion and the Ion District and S2G Energy, Syzygy Plasmonics, and Cemvita Factory were easy and obvious nominations, as they were all working towards achieving net zero and are exemplars of startup innovation within our ecosystem."
Australia-based Mineral Carbonation Int'l, focused on carbon transformation, claimed first place and the title of top Clean Energy Startup Champion. PJP Eye, based in Japan and working on commercialised plant-based carbon batteries, came in second.
The second cohort of The Ion Smart and Resilient Cities Accelerator hosted a day full of thought leadership and startup pitches. Photo by Shobeir Ansari, Getty Images

4 startups pitch at virtual demo day for Houston accelerator program

resillience

In light of COVID-19, it is more relevant than ever to discuss and support startups with sustainability and resiliency in mind. At The Ion Smart and Resilient Cities Cohort 2 Demo Day, a virtual audience was reminded of that.

"So, 2020 has certainly been a year of unprecedented uncertainty and change for Houston, for Texas, for our country, and for our world," says Christine Galib, director of the accelerator. "The past few months in particular have been especially difficult as the global pandemic and civil unrest continue to spotlight systemic and structural scars on the face of humanity."

The virtual event was streamed on July 1 and hosted several thought leaders and presenters before concluding with pitches from four of the cohort companies.

"Through it all, and in a virtual world, Cohort 2 startups, the mentors, and our Ion team have been the change we wish to see in the world," Galib continues. "For these startups, failure is simply not an option — and neither is going at it alone."

Earlier this year, Galib announced the second cohort would be focused on solutions for Houston's air quality, water purification, and other cleantech needs. The program, backed by Intel, Microsoft, and TX/RX, launched on Earth Day and commenced shortly after. Cohort 3 is expected later this year.

Here are the four companies that pitched and the problems they are trying to solve.

Re:3D

re:3D was founded just down the street from NASA's Johnson Space Center to address the need for a mid-market 3D printing solution. The Houston-based startup also wanted to create their 3D printer that operates on recycled plastics in order to prevent excess waste.

"Where some see trash, we see opportunity," Charlotte Craff, community liaison at Re:3D says in her presentation.

Re:3D's clients can get their hands on their own Gigabot for less than $10,000, and the printer uses pellets and flakes from recycled plastics —not filament — to print new designs. Clients are also supported by the company with design software and training.

"We can help the city of Houston help meet its climate action and resilient city goals by transforming the way people think about recycling," Craff says about Re:3D's future partnerships with the city.

Water Lens

While two-thirds of the world is covered in water, only 0.7 percent is drinkable. And of that fresh water, 92 percent of it is used in agricultural and industrial settings. This is how Keith Cole, CEO and founder of Water Lens, set the scene for his presentation.

Water Lens, which is based in Houston with a lab located in Austin, wants to solve the problem of cities and countries running out of fresh, drinkable water by equipping huge water-using companies with a water testing tool.

"We've developed a system to let anyone test any water literally anywhere in the world," Cole says, citing clients like ExxonMobil, Shell, and Halliburton.

S2G Energy

S2G Energy, based in Mexico, is focused on optimizing energy management in order to digitize, empower, and unlock potential for cost-saving efforts and technology.

In his pitch, Geronimo Martinez, founder of S2G Energy, points out that restaurants, commercial buildings, and other adjacent industries can save money by implementing energy management solutions that come out of S2G Energy's expertise. In Mexico, Martinez says, clients include the top two restaurant chains that — especially during COVID-19 — need optimization and cost saving now more than ever.

Eigen Control

A refinery's distillation columns are expensive — their fuel use accounts for 50 of operating costs, says Dean Guma, co-founder and CEO of Houston-based Eigen Control.

Guma explains in his pitch how Eigen Control's technology can plug into existing sensors, model networks based on data, and employ the startup's artificial intelligent technology to reduce carbon emissions and save money on operating costs.

The Ion Smart and Resilient Cities Accelerator has selected its next cohort. Courtesy of The Ion

Houston accelerator announces newest cohort to tackle cleantech

Smart cities

As the world celebrated the 50th annual Earth Day on April 22, a Houston innovation organization announced a new group of startups for its accelerator program that will focus on cleantech solutions within the city of Houston and beyond.

The Ion's accelerator, which recently renewed its focus on resiliency, announced its second cohort with six startups that will create solutions for Houston's air quality, water purification, and other cleantech needs.

"Through leveraging the power of our local Ion community, The Ion Smart and Resilient Cities Accelerator is committed to solving challenges Houstonians face every day," says Christine Galib, senior director of accelerator programs at The Ion and the director of the accelerator, in a news release. "We connect participating startups with mentors, partners, and stakeholders, so they gain access to the resources they need to build, validate, and scale their technologies. Together, we are building a safer, smarter, and more accessible city for all Houstonians."

The program is supported by Intel, Microsoft, and TX/RX and has began its programming for the new cohort. The six startups selected for the program are:

  • Houston-based Eigen Control uses machine learning and chemical engineering models to combat rising CO2 emissions. Distillation process plants emit so much CO2 — and Eigen Control's processes are working to change that.
  • Houston-based Annapurna Solutions has cloud-based solutions for hazardous and solid waste management.
  • Mexico City-based S2G Energy focuses on sustainable and optimized solutions for businesses and governments with its energy-management-as-a-service technology.
  • Houston-based re:3D is a 3D-printing nonprofit that is democratizing small-scale manufacturing. Its Gigabot can use recycled and reclaimed materials for more sustainable and affordable production. The company, which has offices in Puerto Rico and Austin, donates a printer to someone making a difference with every 100 printers it sells.
  • Austin-based LifePod Corps is a nonprofit that provides disaster relief through renewable and sustainable technologies built and delivered by military veterans.
  • Houston-based Water Lens has created a real-time water data analytics platform for industries that use a lot of water — like oil and gas, agriculture, power generation, coal mining, and food processing. The technology allows for quicker, more reliable results.

The accelerator's leaders chose its theme for the cohort based on the City of Houston's Resilient Houston Strategy and Climate Action Plan. The program has identified these six startups as movers and shakers within these Smart Cities challenges.

"We are thrilled to collaborate with these startups to further develop Houston as one of America's smartest and most resilient cities," says Gabriella Rowe, executive director of The Ion, in the release. "By leveraging our resources and networks, the accelerator and Cohort 2 improve living conditions for all Houstonians. In this way, we stimulate our local economy with new jobs and economic opportunities."

Last year's inaugural cohort was announced in August and focused on resilience and mobility. After a demo day in December, the cohort continued its work in Houston through 15 pilot programs the startups had with the city. The third cohort is expected to launch toward the end of 2020, but the next theme has not yet been decided.

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Rice scientist earns $600K NSF award to study distractions in digital age

fresh funding

Rice University psychologist Kirsten Adam has received a $600,000 National Science Foundation CAREER Award to research how visual distractions like phone notifications, flashing alerts, crowded screens and busy workspaces can negatively impact focus—and how the brain works to try to regain it.

The highly competitive five-year NSF grants are given to career faculty members with the potential to serve as academic models and leaders in research and education. Adam’s work will aim to clarify how the brain refocuses in the age of screens, instant gratification and other lingering distractions. The funding will also be used to train graduate students in advanced cognitive neuroscience methods, expand access to electroencephalography (EEG) and for public data sharing.

“Kirsten is a valued member of the School of Social Sciences, and we are thrilled that she has been awarded the prestigious NSF CAREER,” Rachel Kimbro, dean of social sciences, said in a news release. “Because distractions continue to increase all around us, her research is timely and imperative to understanding their widespread impacts on the human brain.”

In Adam’s lab, participants complete simplified visual search tasks while their brain activity is recorded using EEG, allowing researchers to measure attention shifts in real time. This process then captures the moment attention is drawn from a goal and how much effort it takes to refocus.

According to Rice, Adam’s work will test long-standing theories about distraction. The research is meant to have real-world implications for jobs and aspects of everyday life where attention to detail is key, including medical imaging, airport security screening and even driving.

“At any given moment, there’s far more information in the world than our brains can process,” Adam added in the release. “Attention is what determines what reaches our awareness and what doesn’t.”

Additionally, the research could inform the design of new technologies that would support focus and decision-making, according to Rice.

“We’re not trying to make attention limitless,” Adam added. “We’re trying to understand how it actually works, so we can stop designing environments and expectations that fight against it.”

12 Houston climatetech startups join Greentown Labs' growing incubator

Startup Talk

More than 40 climatetech startups joined the Greentown Labs Houston community in the second half of 2025, 12 of which hail from the Bayou City.

The companies are among a group of nearly 70 total 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."

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This article originally appeared on EnergyCaptialHTX.com.

Intuitive Machines forms partnership with Italian companies for lunar exploration services

to the moon

Houston-based space technology, infrastructure and services company Intuitive Machines has forged a partnership with two Italian companies to offer infrastructure, communication and navigation services for exploration of the moon.

Intuitive Machines’ agreement with the two companies, Leonardo and Telespazio, paves the way for collaboration on satellite services for NASA, a customer of Intuitive Machines, and the European Space Agency, a customer of Leonardo and Telespazio. Leonardo, an aerospace, defense and security company, is the majority owner of Telespazio, a provider of satellite technology and services.

“Resilient, secure, and scalable space infrastructure and space data networks are vital to customers who want to push farther on the lunar surface and beyond to Mars,” Steve Altemus, co-founder and CEO of Intuitive Machine, said in a news release.

Massimo Claudio Comparini, managing director of Leonardo’s space division, added that the partnership with Intuitive Machines is a big step toward enabling human and robotic missions from the U.S., Europe and other places “to access a robust communications network and high-precision navigation services while operating in the lunar environment.”

Intuitive Machines recently expanded its Houston Spaceport facilities to ramp up in-house production of satellites. The company’s first satellite will launch with its upcoming IM‑3 lunar mission.

Intuitive Machines says it ultimately wants to establish a “center of space excellence” at Houston Spaceport to support missions to the moon, Mars and the region between Earth and the moon.

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