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Rice Alliance, Greentown name most promising startups and more pitch competition winners

winner winners

Here's who won at two of Houston Energy and Climate Week's signature pitch competitions. Photo via greentown.org

Approximately 100 startups from around the world pitched their breakthrough technologies and businesses during Houston Energy and Climate Week, with a select few taking home top prizes and bragging rights.

Each year, investors at the Rice Alliance Energy Technology Venture Forum name the 10 most-promising startups. Greentown's Climatetech Summit also culminates in a pitch event, where member companies can earn cash prizes.

Here's who won at two of the week's anchor events and competitions.

Rice Alliance Energy Tech Venture Forum

The 23nd annual event was held Thursday, Sept. 17, at Rice University’s Jones Graduate School of Business. The most-promising companies were selected by industry experts and participating investors attending the event.

The 10 most-promising companies included:

  • Australia-based Aquafortus, which has developed a non-thermal liquid to liquid desalination technology for resource recovery from wastewater brine
  • Houston-based Focis AI, which converts industrial laser scans into a queryable digital twin of refineries and plants
  • Houston-based ironlattice, a semiconductor manufacturing company
  • Houston-based Licube, which has developed technology to produce ultra-high-purity lithium compounds for the fusion energy, pharmaceuticals, semiconductors and high-performance solid-state battery sectors
  • Houston-based Mars Materials, a clean chemical manufacturing business that is working to convert captured carbon into resources, such as carbon fiber and wastewater treatment chemicals
  • Dallas-based MCatalysis, which has developed a suite of proprietary microwave-driven catalysts to produce high-quality, ready-to-use fuels compatible with existing infrastructure
  • Oslo, Norway-based OTee, an automation machinery manufacturer
  • Houston-based Pike Robotics, which deploys its Wall-Eye robot to inspect hazardous tanks without taking assets offline
  • New Mexico-based Spiritus, a direct-air-capture (DAC) technology company
  • San Francisco-based UptimeAI Inc., which develops AI reasoning agents for industrial operations teams

Stellai won the People's Choice Award. The Norwegian company develops AI products for the waste management industry.

The energy technology ventures selected to participate in the forum were named earlier this year. See the full list here, and read about last year's winners here.

Greentown Lab's Climatetech Summit

The annual summit was held Wednesday, Sept. 16, featured a number of Houston startups in its pitch competition and lighting pitch round. Judges included Dave Dreessen,, Jon Greene, Naval Preet Singh, Philip Llewellyn, Erin Madro, Justin Yeung, Jay Kim, Rawand Rasheed and Moji Karimi.

Pitch winners included:

  • First place: Elementium Materials' CEO Matthew Dawson, winning a $10,000 cash prize sponsored by TotalEnergies plus another $10,000 in legal services sponsored by Foley Hoag. The company develops advanced battery electrolytes. It is a Greentown Boston member; though Dawson is based in Houston.
  • Second place: Houston-based Solidec CEO and co-founder Ryan DuChanois, winning $5,000 in legal services sponsored by Foley Hoag. The company electrolyzes air, water and electricity into onsite hydrogen peroxide.

Lightening pitch winners included:

  • First place: Montana-based MagDrive Technologies, winning a $1,000 cash prize sponsored by Energy Transition Ventures. The company develops magnetically actuated, zero-emission valve systems that eliminate fugitive emissions and improve reliability.
  • Second place: Houston-based HEXASpec, winning a $500 cash prize sponsored by Foley Hoag. The company has created a new material to improve heat management for the semiconductor industry.

Read Greentown's recap of the summit here.

Houston Energy and Climate Week announced that the 2027 event will move to the spring, held April 4-10.

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Houston-based HEXASpec took home the top TEX-E prize and $25,000 at last year's Energy Venture Day and Pitch Competition. Photo courtesy TEX-E.

40+ teams to pitch at annual CERAWeek clean energy competition

energy venture day

The Rice Alliance for Technology and Entrepreneurship, the Houston Energy Transition Initiative (HETI), the Texas Entrepreneurship Exchange for Energy (TEX-E) and the Ion have named the 30-plus energy ventures and teams that will pitch at the 2026 Energy Venture Day and Pitch Competition during CERAWeek this month.

The selected ventures are "driving efficiency and advancements toward the energy transition," according to the Rice Alliance. Each will each present a 3.5-minute pitch before a network of investors and industry partners during CERAWeek's Agora program on Wednesday, March 25, from noon-5:30 p.m.

The competition is divided up into the TEX-E university track, in which Texas student-led energy startups compete for $50,000 in cash prizes, and the industry ventures track.

Teams competing in the TEX-E Prize track include:

  • GOES
  • Quantum Power System
  • Quas
  • Resonant Thermal Systems
  • Srijan

The industry track is subdivided into three additional tracks, spanning materials to clean energy and will feature 37 companies. A group of expert judges will name the top three companies from each industry track. The winner of the CERAWeek competition will also have the chance to advance and compete for the $1 million investment prize at the Startup World Cup in November 2026.

Teams come from around the world, including several Houston-based ventures, such as Agellus Tank Robotics, Capwell Services and Corrolytics.

The full list of companies pitching at CERAWeek includes:

  • Agellus Tank Robotics
  • Airovation Technologies
  • Anax Power
  • Armeta
  • ATS Energy
  • Capwell Services
  • CarbonLume
  • Cogniprise
  • Corrolytics
  • Daphne Technology
  • Gemini Energy
  • Grid8
  • H Quest Vanguard
  • intcom
  • Ionada Canada
  • Junipix
  • Kunin Technologies
  • LAVA Power
  • Licube
  • LNK Energies
  • Maverick X
  • Membravo
  • Mirico
  • Mocean Energy
  • Monitorai
  • OCOchem
  • Oleo
  • Pix Force
  • PolyJoule
  • Power to Hydrogen
  • Sotaog
  • Spotlight
  • Tierra Climate
  • Verdagy
  • Via Separations
  • Vycarb
  • ZettaJoule

Those not attending CERAWeek can catch these companies and more than a dozen others at a pitch preview at the Ion. The free Pitch Preview will be held Tuesday, March 24, from 9 a.m.-2:30 p.m. Click here to register.

Additional companies pitching during the free preview include:

  • Ammobia
  • Arolytics
  • Ayrton Energy
  • ChainWeave
  • Cybereum
  • Energytech
  • ENP Technologies
  • KP Labs
  • Mcatalysis
  • Mitico
  • Mote
  • Nanos
  • New Horizon Oil and Gas
  • Predyct
  • Salem Robotics
  • Toluai

Two Rice University student teams took home top prizes during last year's TEX-E competition, while ventures from New Jersey, Wyoming and Virgina won in their respective industry tracks. See the full list of last year's winners here.

TEX-E, a Houston-based energy transition nonprofit, has named Sandy Guitar as its executive director. Photo courtesy TEX-E.

TEX-E names Houston VC leader as new executive director

new hire

The Texas Exchange for Energy & Climate Entrepreneurship (TEX-E) has named Houston venture capital and innovation leader Sandy Guitar as its new executive director.

Guitar succeeds David Pruner, who will move into the board chair role.

Guitar previously served as general partner and managing director at Houston-based VC firm HX Venture Fund and is co-founder of Weathergage Capital. She also sits on the advisory board of Rice University's Liu Idea Lab for Innovation and Entrepreneurship (Lilie) and launched the Women Investing in VC in Houston group.

In a LinkedIn post, Guitar shared that she's looking forward to bringing her problem-solving skills to the energy transition.

"Innovating in the energy sector is as significant and intricate a problem as I have ever worked on — one that demands creativity, collaboration, and resourcefulness at every turn," she shared.

"I'm honored to join TEX-E at such a pivotal time in the energy transition," she added in a news release. "Energy and climate innovation is accelerating at the intersection of brilliant minds and bold ideas. I'm excited to help TEX-E amplify that collision between students who think differently and the real-world problems that demand fresh solutions."

According to TEX-E, Guitar will continue to lead the organization's programming that aims to connect student climate entrepreneurs with "industry reality."

"Sandy understands the complexities of the Texas energy ecosystem and brings a forward-looking vision for how related innovation can drive meaningful, lasting impact. She's exactly the leader we need to take TEX-E to the next level and help create the next generation of energy transition innovators," David Baldwin, TEX-E board member, added in the release.

TEX-E was founded in 2022 through partnerships with MIT Martin Trust Center for Entrepreneurship and Greentown Labs. It works with university students from six schools: Rice University, University of Houston, Prairie View A&M University, The University of Texas at Austin, Texas A&M University and MIT.

It's known for its student track within the Energy Venture Day and Pitch Competition at CERAWeek, which awarded $25,000 to HEXASpec, a Rice University-led team, at the 2025 event. It also hosted its inaugural TEX-E Conference, centered on the theme of Energy & Entrepreneurship: Navigating the Future of Climate Tech, earlier this year.

Gold H2 has completed a successful field test. Photo courtesy of Gold H2

Houston's Gold H2 harvests clean hydrogen and more energy news to know

Trending Topics

Editor's note: There have been exciting developments in the energy transition sector this month, from Gold H2's successful field trial to a Houston leader becoming the first woman to win an international award. Below are the five biggest EnergyCapitalHTX stories from July 1-15, 2025:

Gold H2 harvests clean hydrogen from depleted California reservoirs in first field trial

Houston biotech company Gold H2's proprietary biotechnology has generated hydrogen from depleted oil reservoirs in a California field trial. Photo courtesy Gold H2.

Houston climatech company Gold H2 completed its first field trial that demonstrates subsurface bio-stimulated hydrogen production, which leverages microbiology and existing infrastructure to produce clean hydrogen. The project represented the first-of-its-kind application of Gold H2’s proprietary biotechnology, which generates hydrogen from depleted oil reservoirs, eliminating the need for new drilling, electrolysis or energy-intensive surface facilities. Continue reading.

Greentown Labs adds 6 Texas clean energy startups to Houston incubator

Six companies have joined Greentown Houston, focused on long-duration energy storage systems, 3D solar towers and more. Photo courtesy Greentown Labs.

Greentown Labs announced the six startups to join its Houston community in Q2 of 2025. The companies are among a group of 13 that joined the climatetech incubator, which is co-located in Houston and Boston, in the same time period. The companies that joined the Houston-based lab specialize in a number of clean energy applications, from long-duration energy storage systems to 3D solar towers.Continue reading.

Rice University spinout lands $500K NSF grant to boost chip sustainability

HEXAspec, founded by Tianshu Zhai and Chen-Yang Lin, has been awarded an NSF Partnership for Innovation grant. Photo courtesy of Rice

HEXAspec, a spinout from Rice University's Liu Idea Lab for Innovation and Entrepreneurship, was recently awarded a $500,000 National Science Foundation Partnership for Innovation grant. The team says it will use the funding to continue enhancing semiconductor chips’ thermal conductivity to boost computing power. HEXAspec has developed breakthrough inorganic fillers that allow graphic processing units (GPUs) to use less water and electricity and generate less heat. The technology has major implications for the future of computing with AI sustainably. Continue reading.

Oxy's Vicki Hollub becomes first woman to win prestigious energy award

Oxy CEO Vicki Hollub (center) is the first woman to win WPC Energy's Dewhurst Award. Photo via 1pointfive.com

Vicki Hollub, president and CEO of Houston-based Occidental (Oxy), has become the first woman to win WPC Energy’s prestigious Dewhurst Award. Hollub is the thirteenth recipient of the award, which is considered the highest honor from WPC Energy, a global, non-advocacy, non-political nonprofit organization that promotes the sustainable management of energy and energy products. She is just the fourth U.S. winner since the award launched in 1991. Continue reading.

10+ must-attend Houston energy transition events happening in Q3 2025

Houston Energy and Climate Startup Week returns in September. Photo via GHP

Q3 is here, and with it, a full slate of must-attend events for Houston energy professionals. On the agenda are casual mixers, exciting showcases, week-long happenings, and more. Mark your calendars for these top Houston energy transition events coming up from July to September 2025, and begin registering today. Continue reading.

HEXASpec was founded by Rice Ph.D. candidates Tianshu Zhai and Chen-Yang Lin, who are a part of Lilie’s 2024 Innovation Fellows program. Photo courtesy of Rice

3 Houston sustainability startups score prizes at Rice University pitch competition

seeing green

A group of Rice University student-founded companies shared $100,000 of cash prizes at an annual startup competition — and three of those winning companies are focused on sustainable solutions.

Liu Idea Lab for Innovation and Entrepreneurship's H. Albert Napier Rice Launch Challenge, hosted by Rice earlier this month, named its winners for 2024. HEXASpec, a company that's created a new material to improve heat management for the semiconductor industry, won the top prize and $50,000 cash.

Founded by Rice Ph.D. candidates Tianshu Zhai and Chen-Yang Lin, who are a part of Lilie’s 2024 Innovation Fellows program, HEXASpec is improving efficiency and sustainability within the semiconductor industry, which usually consumes millions of gallons of water used to cool data centers. According to Rice's news release, HEXASpec's "next-generation chip packaging offer 20 times higher thermal conductivity and improved protection performance, cooling the chips faster and reducing the operational surface temperature."

A few other sustainability-focused startups won prizes, too. CoFlux Purification, a company that has a technology that breaks down PFAS using a novel absorbent for chemical-free water, won second place and $25,000, as well as the Audience Choice Award, which came with an additional $2,000.

Solidec, a company that's working on a platform to produce chemicals from captured carbon, and HEXASpec won Outstanding Achievement in Climate Solutions Prizes, which came with $1,000.

The NRLC, open to Rice students, is Lilie's hallmark event. Last year's winner was fashion tech startup, Goldie.

“We are the home of everything entrepreneurship, innovation and research commercialization for the entire Rice student, faculty and alumni communities,” Kyle Judah, executive director at Lilie, says in a news release. “We’re a place for you to immerse yourself in a problem you care about, to experiment, to try and fail and keep trying and trying and trying again amongst a community of fellow rebels, coloring outside the lines of convention."

This year, the competition started with 100 student venture teams before being whittled down to the final five at the championship. The program is supported by Lilie’s mentor team, Frank Liu and the Liu Family Foundation, Rice Business, Rice’s Office of Innovation, and other donors

“The heart and soul of what we’re doing to really take it to the next level with entrepreneurship here at Rice is this fantastic team,” Peter Rodriguez, dean of Rice Business, adds. “And they’re doing an outstanding job every year, reaching further, bringing in more students. My understanding is we had more than 100 teams submit applications. It’s an extraordinarily high number. It tells you a lot about what we have at Rice and what this team has been cooking and making happen here at Rice for a long, long time.”

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This article originally ran on InnovationMap.

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Texas ranks below average on most energy-efficient states report

room to improve

Despite being home to a booming energy sector, Texas ranks below average on a new list of the country’s most and least energy-efficient states.

The list, compiled by personal finance website WalletHub, puts Texas at No. 34 for energy efficiency. It ranked 27th for energy efficiency of homes and 41st for energy efficiency of cars. Texas improved by one spot on the 2026 report, after coming in at No. 35 last year and No. 36 in 2024.

California took the top spot on the list this year, beating out Vermont, which claimed the No. 1 rank in 2025. South Carolina ranked No. 48. Due to data limitations, Alaska and Hawaii were excluded from WalletHub’s analysis.

In the WalletHub study, California had the lowest residential energy consumption per capita and the third-highest efficiency for home energy. At the bottom of the list, South Carolina ranked 48th for energy efficiency of homes and 35th for energy efficiency of cars.

Here’s who joined California in the top 5:

  • No. 2 Vermont
  • No. 3 New York
  • No. 4 Washington
  • No. 5 Massachusetts

WalletHub notes the average U.S. family spends at least $2,000 per year on utilities, and the average consumer spent $2,411 on gasoline in 2024.

The U.S. Department of Energy estimates that adopting energy-efficient measures in the home could reduce a family’s utility costs by as much as 25 percent. As for gas, the agency found a more fuel-efficient vehicle could save the average driver more than $1,000 per year.

“Energy efficiency doesn’t just help save the planet — it also helps save you money by lowering the amount of electricity, gas, oil, or other types of energy you need to consume,” WalletHub analyst Chip Lupo says.

“While there are some steps you can take to become more energy-efficient on your own, living in the right area can give you a big boost,” he adds. “For example, certain states have much better public transportation systems that minimize your need to drive, at least in big cities. Some places also have better-constructed buildings that retain heat better during the winter or stay cooler during the summer.”

WalletHub compiled the listing using data from the U.S. Census Bureau, National Climatic Data Center, U.S. Energy Information Administration, and Federal Highway Administration.

Utility Global's H2Gen named one of the best inventions of 2026

Best of 2026

One of the year's most buzzworthy innovations comes from a Houston-based leader in the energy transition. Utility Global's H2Gen recently made Time magazine’s list of the 300 best inventions of 2026.

The H2Gen is an innovative system that produces low-cost clean hydrogen from water and industrial off-gases. The company says the process doesn’t require electricity, a notable claim since hydrogen production typically consumes a lot of power.

"Using a tubular electrochemical cell containing a proprietary electrolyte and water, the company can turn industrial off-gases into hydrogen at scale—no extra electricity required," writes Time. "Bonus: the process also pulls out carbon dioxide as a separate stream, where it can be captured and kept out of the atmosphere.

CEO Parker Meeks tells Time, it's “a practical pathway to decarbonize existing industrial assets."

The startup is on a roll. It has raised $100 million so far in an ongoing Series D round to offer its decarbonization technology at industrial scale around the world.

H2Gen is joined by 10 other inventions with Texas connections onTime's list, as well as one "special mention."

In North Texas, they are:

Samsung
Plano-based Samsung Electronics America pulled off a hat trick this year, with three products making Time’s list. First up is the Galaxy S26 Ultra smartphone. It packs a more powerful camera, Galaxy AI features, and pro-level content creation tools. But Time singled out its new built-in privacy display as the phone’s “biggest selling point.”

Samsung’s Bespoke AI Family Hub refrigerator also got smarter. When AI first came to the Family Hub in 2024, it could recognize some fresh foods, but you still had to log packaged items by hand, Time noted. Now, with Google Gemini built in, the fridge can identify more than 2,000 packaged foods, read handwritten labels, and warn you when food is about to expire. It then uses what’s inside to build grocery lists and suggest recipes.

And for gamers, there’s the Odyssey G8 monitor. Its 6K resolution leapfrogs the 4K standard, delivering what Samsung calls “exceptional visual clarity and detail” on a screen big enough for gaming and multitasking.

OxeFit
Plano-based OxeFit’s XS1 Peak is about the size of a treadmill but works like an entire gym. It can be set up for strength training, simulated skiing or kayaking, Pilates, or rowing. What makes it stand out is a built-in virtual spotter. According to Time, the machine “uses AI, computer vision and sensors to correct the user’s form, change resistance in the middle of a rep and reduce the weight when the user is struggling, much like a human spotter.”

EssilorLuxottica
EssilorLuxottica, the French eyewear giant whose U.S. headquarters is in Farmers Branch, makes Essilor Stellest lenses. The lenses correct nearsightedness while also slowing the eye growth that makes it worse over time. Stellest is the first and only eyeglass lens authorized by the U.S. Food and Drug Administration to control myopia, Time said. The lenses look like regular glasses but contain 1,021 tiny lenslets. In a U.S. trial of kids ages 6-12, myopia progression slowed by an average of 71 percent over two years compared with standard lenses.

Helpany
Helpany, a startup based in Phoenix that manufactures its devices in DFW, makes Paul, a ceiling-mounted gadget that uses radar and AI to spot subtle changes in how residents move and flag those at higher risk of falling. Helpany says the technology can cut falls by as much as 72 percent.

Aurora Innovation
Aurora, based in Pittsburgh with a corporate and operations hub in Coppell, rolled out its second-generation Driver 2 system in July. By September, Driver 2 trucks had logged more than 500,000 driverless miles without a single at-fault crash, Time reported, and the company expects 200 of them on the road by the end of 2026.

Colossal Biosciences
Dallas-based Colossal Biosciences built an artificial egg by placing an ultra-thin, transparent silicone membrane inside a rigid 3D-printed cup, letting scientists watch the embryo develop. Twenty-six chickens have already been hatched.

In Austin, they are:
Cedar Park-based Hyliion landed on Time’s list with its Karno Power Module, a modular generator designed to produce power wherever it’s needed. The Karno represents a big pivot for the company. Hyliion got its start building electrified powertrains for 18-wheelers before shifting into power generation after acquiring the Karno generator technology from GE Aerospace. Founded in Pittsburgh in 2015, the company relocated to Cedar Park in 2018.

The other Austin-associated honoree is Moment Energy. As more electric vehicles hit the road, a growing number of their batteries are nearing retirement, while demand for power keeps climbing. Moment Energy found a way to tackle both problems at once. The company’s Megafactory 1, which opened in Vancouver, Canada, in June, turns old EV batteries into modular energy storage systems for hospitals, factories, data centers, and other big power users. “Our goal is to make sure these batteries don’t end up in landfills,” founder Edward Chiang told Time.

In the “Special Mentions” category, Austin-based Renzoe Box gained notice for its refillable custom makeup palette for on-the-go people. Licensed architect René Graham designed the box. She graduated from Houston's Rice University, and was born and raised in Dallas.

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A version of this article first appeared on CultureMap.com.

Houston researchers develop heating method to recover critical minerals from e-waste

hot new research

Researchers at Rice University have developed a new technique to efficiently recycle electronic waste and harvest critical minerals using rapid heating.

Most electronic devices use flame-retardant plastic. The plastic is formulated from a critical metal called antimony.

However, recapturing antimony is typically a challenging task since it first has to be released from the plastic. As it is released, other compounds can form, such as organic bromides, which are toxic and difficult to capture. However, the organic bromides can also be reused and have applications in industrial chemicals when safely captured.

“Conventionally heating the plastic releases the antimony in a volatile and difficult-to-collect form as well as creating and releasing hazardous organic bromide compounds,” Leo Haoxin Ye, first author of the paper and a graduate student at Rice, said in a news release. “Other options are risky or more impractical, such as using strong acids, organic solvents or multistep treatment options.”

To address this issue, leading Rice chemistry professor James Tour, Ye and their team adapted Tour’s flash Joule heating technique, which heats materials to hundreds of degrees Celsius in milliseconds, according to Rice.

The team ground up flame-retardant plastic waste and placed it between two sheets of electrically heated carbon paper before using what’s known as isothermal-clamped flash Joule heating to release and collect the antimony.

The team found that limiting the time the plastic spent in the high temperature range dramatically reduced the production of the hazardous organic bromide compounds. The plastic remained between 200 degrees and 500 degrees Celsius for only 9.4 milliseconds, according to Rice.

Through the process, the team recovered 90 percent of antimony from tested materials and converted 83 percent of the bromide into hydrogen bromide. Their findings were published this month in the journal Nature Chemical Engineering.

“Isothermal-clamped flash Joule heating could improve the speed, safety and practicality of antimony recovery from discarded flame-retardant plastics,” Tour added in the release. “This represents an important step forward to conserving and reusing our critical antimony supply while also regenerating bromide salts for reuse.”

The study noted that the world is currently trending toward producing 82 million metric tons of flame-retardant plastic waste by 2030, which adds to the fact that e-waste is the fastest-growing solid waste stream in the world.

The research was funded by the Air Force Office of Scientific Research and the U.S. Army Corps of Engineers.

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