Fifteen startups — with clean energy solutions involving everything from solar energy to hydrogen — are joining Rice Alliance's Clean Energy Accelerator later this summer. Photo via Getty Images

A clean energy program has announced its third cohort and named the 15 startups that were accepted into to the accelerator.

The Rice Alliance's Clean Energy Accelerator revealed its 2023 cohort that will be in the 10-week program that kicks of July 25. CEA, a hybrid program based out of the Ion, will wrap up with a Demo Day alongside the 20th Annual Rice Alliance Energy Tech Venture Forum on September 21.

The accelerator, led by Kerri Smith and Matt Peña, provides the cohort with programming, networking, and mentorship from six executives in residence — Nathan Ball, Fatimah Bello, Michael Egan, Michael Evans, Stephen Sims, and Deanna Zhang.

Since the Clean Energy Accelerator launched in 2021, the program has supported 29 ventures that have gone on to raise over $75 million in funding, identified and launched pilots, and created jobs, According to Rice, many of these companies relocated to Houston.

Class 3, which has already raised $23.3 million in funding, hails from four countries and seven states and are addressing a range of energy solutions — from advanced materials, carbon management/capture, energy storage, hydrogen, solar energy, wind energy, and more. They were selected by a screening committee consisting of more than 50 industry experts, investors, energy leaders, and entrepreneurs.

The third class, as announced by Rice Alliance, is as follows:

  • Ayrton Energy, based in Alberta, Canada, provides hydrogen storage technology that improves hydrogen transport logistics for distributed energy applications.
  • Headquartered in Massachusetts, Carbix transforms atmospheric carbon dioxide emissions into building materials using proprietary reactor technology.
  • Houston-based CryoDesalination lowers the carbon footprint and cost of removing salts and heavy metals from water and industrial effluents.
  • Digital Carbon Bank, based in Alberta, Canada, provides a carbon solution tailored for the energy industry.
  • Chandler, Arizona-based EarthEn provides compressed carbon dioxide-based energy storage and artificial intelligence solutions allowing grid owners/operators to be completely renewable.
  • H Quest Vanguard, from Pittsburgh, provides green hydrogen at a five to 10 times lower cost to users of natural gas to decarbonize industrial heat.
  • Calgary, Alberta-based Highwood Emissions Management's SaaS platform allows oil and gas companies to understand their emissions and develop robust plans to reduce them.
  • Icarus RT, from San Diego, California, improves photovoltaic efficiency while enabling useful heat energy storage.
  • Los Altos, California-based Khepra has developed a chemical manufacturing platform for the low-cost, sustainable production of agrochemicals.
  • Binghamton, New York-based Natrion’s electrolyte is a drop-in solid-state battery component that can be rapidly implemented into existing batteries.
  • Oceanways, based in London, provides low-cost, flexible and scalable zero-emission underwater "virtual pipelines" to energy producers.
  • Relyion Energy, from Santa Clara, California, is developing battery usage and intelligence solutions with deeper data and insights for retired electric vehicle batteries.
  • Massachusetts-based Triton Anchor provides a more cost-effective anchoring solution for offshore clean energy with minimal environmental impact.
  • TROES, from Markham, Ontario, provides a 4-in-1 microgrid solution with integrated hardware and software for a streamlined energy storage experience.
  • Mexico City-based Tycho Solutions supports clean energy project developers by saving time and money during the critical project-siting process.
The Rice Alliance for Technology and Entrepreneurship identified eight startups that are best suited for disrupting energy tech and innovation. Photo courtesy of Rice Alliance

Rice Alliance pitch event identifies 8 most-promising energy tech startups

ones to watch

In honor of CERAWeek, the Rice Alliance for Technology and Entrepreneurship hosted its annual Energy Venture Day.

After over 50 startup pitches and more than 300 meetings, venture investors identified eight startups that are the most-promising companies on a path to innovate and disrupt the energy ecosystem.

The 2023 Energy Venture Day's Most-Promising Startup winners were:

AeroShield Materials

Graphic via aeroshield.tech

Hyde Park, Massachusetts-based AeroShield Materials is creating thermally insulating transparent inserts. The inserts are only four millimeters of AeroShield's material and, when placed inside a double-pane window, provides 65 percent more energy efficiency.

Columbia Power Technologies (C-Power)

Image via cpower.co

C-Power, based in Charlottesville, Virgina, has a technology that harnesses the power of the ocean.

"C-Power delivers this renewable energy resource to the world, both through low-power solutions that bring energy and the cloud to the sea and large-scale solutions that help decarbonize terrestrial grids," the company's website reads.

EarthEn

Graphic via earthen.energy

Chandler, Arizona-based EarthEn is focused on long duration energy storage solutions that use CO2 in a closed loop to store 4 to 100 hours of energy at a low cost. The SaaS tools — with artificial intelligence and machine learning — optimize peak demand pricing and use predictive analysis to enable grid resiliency.

Group1

Photo via Twitter

Group 1, based in Austin, is focused on the commercialization of potassium-ion batteries. The core technology originates from the labs of University of Texas at Austin professor JB Goodenough, co-inventor of the lithium-ion battery.

Ionada Carbon Solutions

Photo via ionada.com

Houston-based Ionada, a member of Halliburton Labs, has created a technology that can remove up to 99 percent of the carbon dioxide emissions for the energy, marine, and e-fuels, according to the company.

"Our engineers have more than a century of combined expertise in reducing emissions for the power generation, chemical, road, rail, air and marine industries. We are here to help you find the best sustainable solution to reduce your emissions," reads the website.

H Quest Vanguard

Photo courtesy of Halliburton

Another Halliburton Labs member H Quest Vanguard, headquartered in Pittsburgh, has developed an electrically powered chemical conversion platform that leverages Microwave Plasma Pyrolysis to liberate zero-CO2 hydrogen from natural gas using only a quarter of energy required by electrolysis, while coproducing a high-value carbon or petrochemical coproduct.

Pressure Corp

Photo by Anton Petrus/Getty

Houston-based Pressure Corp is developing waste pressure power systems to help midstream gas companies solve how they reduce emissions by providing the technology, capital and expertise required to achieve their environmental, social and governance goals.

STARS Technology

Photo via starsh2.com

Based in Richland, Washington, STARS Technology Corp. is commercializing advanced micro-channel chemical process technology that originally was designed for NASA and the Department of Energy. The company's reactors and heat exchangers are compact, energy-efficient, and more.

Here are the most promising energy tech startups in the market today. Natalie Harms/InnovationMap

Houston investors, mentors name 9 most promising energy startups at Rice Alliance event

best of the rest

This week, 39 energy startup companies from all over the world pitched in Houston — and nine were recognized as being the most promising of the batch.

The Rice Alliance for Technology and Entrepreneurship returned its Offshore Technology Conference pitch event to its in-person capacity and host the annual event at the Ion Houston for the first time. The event featured three-minute pitches from the companies, and a select group of corporate and venture investors decided on the top nine to honor.

"We asked investors and corporates to look at the companies here today and help us determine the companies most promising — based on those that have an innovative technology that is solving a large problem, has customers willing to pay for it, and has the right team to build and grow their company," Brad Burke, managing director of the Rice Alliance says to the crowd at the event on May 3.

Here's which energy tech companies stood out to investors.

EarthEn

EarthEn, a Chandler, Arizona-based company, is a grid-scale energy storage solution. The technology can provide short-term — 6 to 8 hours — and long-term — over 100 hours — storage. The EarthEn pods provide a cheaper alternative and are built using 3D printing.

Echogen Power Systems

Based in Akron, Ohio, Echogen Power Systems has created a technology that captures heat that would otherwise be lost and converts it to a useable power source. The solution allows for any customer that operates at significant levels of heat to have a cost-effective energy option.

FuelX Innovation

Based in Aiken, South Carolina, FuelX Innovation is manufacturing solid-state hydrogen products and power systems, impacting mobile hydrogen fuel cell-powered applications. The company is focused on producing the lowest cost Alane, or aluminum hydride, for the fuel cell.

Lillianah Technologies

Lillianah Technologies, based in the Houston area in Spring, uses algae to remove carbon dioxide from the atmosphere. The company sells carbon offsets to corporations.

oPRO.ai

oPRO.ai — which is based in Los Altos, California — is providing its customers with deep learning optimization software for process and responsible operations for oil and gas, petrochemical, chemicals, and metal industries.

Proteum Energy

Phoenix, Arizona-based Proteum Energy provides its customers low-cost, clean hydrogen by reforming renewable ethanol into renewable hydrogen.

Sync Power Solutions

Embracing a clean sheet approach, Sync Power Solutions, based in Abilene, Texas, created a solution involving a redesign of electric motors and generators to increase energy efficiency, save on costs, and more.

Utility Global

Houston-based Utility Global is using high temperature electrolysis without the use of electricity to produce hydrogen from waste gases.

ZL Innovations

Based in Portland, Oregon, ZL Innovations is focused on eliminating greenhouse gas emissions from failed industrial valves. The company's solution is a magnetic actuation assembly that can be better sealed to prevent emissions.

The Rice Business Plan Competition is back in person this year, and these are the 42 teams that will go head to head for investments and prizes. Photo courtesy of Rice University

Rice University's student startup competition names 42 teams to compete for over $1 million in prizes

ready to pitch

The Rice Alliance for Technology and Entrepreneurship and the Jones Graduate School of Business have announced the 42 student teams that will compete in the 2022 Rice Business Plan Competition, which returns to an in-person format on the Rice University campus in April.

Of the teams competing for more than $1 million in prizes and funding in this year's competition, six hail from Texas — two teams each from Rice University, University of Texas at Austin, and Texas A&M University. The student competitors represent 31 universities — including three from European universities. The 42 teams were narrowed down from over 400 applicants and divided into five categories: energy, cleantech and sustainability; life sciences and health care solutions; consumer products and services; hard tech; and digital enterprise.

This is the first in-person RBPC since 2019, and the university is ready to bring together the entrepreneurs and a community of over 250 judges, mentors, and investors to the competition.

“As we come out on the other side of a long and challenging two years, we're feeling a sense of renewal and energy as we look to the future and finding inspiration from the next generation of entrepreneurs who are building a better world,” says Catherine Santamaria, director of the RBPC, in a news release.

“This year's competition celebrates student founders with a strong sense of determination — founders who are ready to adapt, build and grow companies that can change the future,” she continues. “We hope their participation will provide guidance and inspiration for our community.”

According to a news release, this year's RBPC Qualifier Competition, which narrowed down Rice's student teams that will compete in the official competition, saw the largest number of applicants, judges, and participants in the competition’s history. The Rice Alliance awarded a total of $5,000 in cash prizes to the top three teams from the internal qualifier: EpiFresh, Green Room and Anvil Diagnostics. From those three, Rice teams EpiFresh and Green Room received invitations to compete in the 2022 RBPC..

The full list of student teams that will be competing April 7 to 9 this year include:

  • Acorn Genetics from Northwestern University
  • Advanced Optronics from Carnegie Mellon University
  • Aethero Space from University of Missouri
  • AImirr from University of Chicago
  • AiroSolve from UCLA
  • Algeon Materials from UC San Diego
  • Anise Health from Harvard University
  • Beyond Silicon from Arizona State University
  • Bold Move Beverages from University of Texas at Austin
  • Diamante from University of Verona
  • EarthEn from Arizona State University
  • Empower Sleep from University of Pennsylvania
  • EpiFresh from Rice University
  • EpiSLS from University of Michigan
  • Green Room from Rice University
  • Horizon Health Solutions from University of Arkansas
  • Hoth Intelligence from Thomas Jefferson University
  • INIA Biosciences from Boston University
  • Invictus BCI from MIT
  • Invitris from Technical University of Munich (TUM)
  • KLAW Industries from Binghamton University
  • LIDROTEC from RWTH Aachen
  • Locus Lock from University of Texas at Austin
  • LymphaSense from Johns Hopkins University
  • Mallard Bay Outdoors from Louisiana State University
  • Mantel from MIT
  • Olera from Texas A&M University
  • OpenCell AI from Weill Cornell Medicine
  • OraFay from UCLA
  • Pareto from Stanford University
  • Photonect Interconnect Solutions from University of Rochester
  • PLAKK from McGill University
  • PneuTech from Johns Hopkins University
  • Rola from UC San Diego
  • RotorX from Georgia Tech
  • SimulatED from Carnegie Mellon University
  • SuChef from University of Pennsylvania
  • Symetric Finance from Fairfield University
  • Teale from Texas A&M University
  • Team Real Talk from University at Buffalo
  • TransCrypts from Harvard University
  • Woobie from Brigham Young University
Last year's awards had 54 student teams competing virtually, with over $1.4 million in cash and prizes awarded. Throughout RBPC's history, competitors have gone onto raise more than $3.57 billion in capital and more than 259 RBPC alumni have successfully launched their ventures. Forty RBPC startups that have had successful exits through acquisitions or trading on a public market, per the news release.
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Meet 6 of the fastest-growing scaleup companies in Houston right now

meet the finalists

From raising funding rounds to earning FDA acceptance, some of Houston's most innovative companies have reached major milestones this year.

The 2025 Houston Innovation Awards will recognize their progress by bringing back our Scaleup of the Year category for the second year. The award honors an innovative later-stage startup that's recently reached a significant milestone in company growth.

Six breakthrough businesses have been named finalists for the 2025 award. They range from climatetech startups to a biotech company developing new drugs for neurodegenerative diseases and more.

Read more about these businesses and their impressive growth below. Then join us at the Houston Innovation Awards on Nov. 13 at Greentown Labs, when the winner will be unveiled at our live awards ceremony.

Tickets are now on sale for this exclusive event celebrating all things Houston Innovation. Corporate 10-packs, featuring reserved seating and custom branding, and individual tickets are still available. Secure your seats today.

Coya Therapeutics

Clinical-stage biotechnology company Coya Therapeutics (NASDAQ: COYA) has developed COYA-302 that enhances anti-inflammatory T cell function and suppresses harmful immune activity. The drug candidate is being advanced for several neurodegenerative diseases—including ALS, Alzheimer’s, Parkinson’s, and frontotemporal dementia—and has demonstrated promising reductions in neuroinflammation in preclinical and early clinical studies, according to the company.

Coya, founded in 2021, received FDA acceptance for its investigational new drug application for COYA-30 this summer. It closed its IPO in January 2023 for more than $15 million and added $26 million in PIPE funding that same year. Last year, the company secured an additional $15 million in PIPE funding.

Fervo Energy

Houston-based Fervo Energy is working to provide 24/7 carbon-free energy through the development of cost-competitive geothermal power. The company is developing its flagship Cape Station geothermal power project in Utah, which is expected to generate 400 megawatts of clean energy for the grid. The first phase of the project will supply 100 megawatts of power beginning in 2026. The second phase is scheduled to come online by 2028.

The company raised $205.6 million in capital to help finance the project earlier this year and fully contracted the project's capacity with the addition of a major power purchase agreement from Shell. Founded in 2017 by CEO Tim Latimer and CTO Jack Norbeck, Fervo is now a unicorn, meaning its valuation as a private company has surpassed $1 billion. In March, Axios reported Fervo is targeting a $2 billion to $4 billion valuation in an IPO.

Koda Health

Houston-based Koda Health has developed an advance care planning platform (ACP) that allows users to document and share their care preferences, goals and advance directives for health systems. The web-based platform guides patients through values-based decisions with interactive tools and generates state-specific, legally compliant documents that integrate seamlessly with electronic health record systems. The company also added kidney action planning to its suite of services for patients with serious illnesses last year.

Koda Health was founded out of the TMC's Biodesign Fellowship in 2020 by CEO Tatiana Fofanova, chief medical officer Dr. Desh Mohan, and chief technology officer Katelin Cherry. The company raised a $7 million series A earlier this year, and also announced major partnerships and integrations with Epic, Guidehealth, Medical Home Network, Privia Health and others.

Mati Carbon

Houston climatetech company Mati Carbon removes carbon through its Enhanced Rock Weathering (ERW) program that works with agricultural farms in Africa and India. Mati says the farmers it partners with are some of the most vulnerable to the impacts of climate change. The nonprofit won the $50 million grand prize in the XPRIZE Carbon Removal competition, backed by Elon Musk’s charitable organization, The Musk Foundation, earlier this year.

Mati Carbon scaled operations in India, Zambia, and Tanzania this year and has advanced its proprietary measurement, reporting and verification (MRV) platform, known as matiC, enabling seamless field data capture, chain-of-custody and carbon accounting at scale. The company was founded in 2022 by co-directors Shantanu Agarwal and Rwitwika Bhattacharya.

Molecule

Houston-based Molecule Software has developed an energy trading risk management (ETRM) platform that allows companies trading power, oil and gas, biofuels, renewables and more stay ahead as the markets evolve.

The company closed a Series B round earlier this year for an undisclosed amount. Sameer Soleja, founder and CEO of Molecule, said at the time that the funding would allow the company to "double down on product innovation, grow our team, and reach even more markets." The company was founded in 2012 by CEO Sameer Soleja and participated in the Surge Accelerator the same year.

Utility Global

Houston-based Utility Global has developed its proprietary eXERO technology that produces low-cost, clean hydrogen from water and industrial off-gases without requiring grid electricity.

First founded in 2018 by CEO Parker Meeks, the company participated in Greentown Labs and the Rice Alliance for Technology and Entrepreneurship programs. It raised a $55 million funding round earlier this year and launched commercial partnerships with ArcelorMittal Brazil and Hanwha Group in South Korea to deploy its hydrogen solutions at scale.

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Venus Aerospace picks up investment from Lockheed Martin Ventures

space funding

Venus Aerospace, a Houston-based startup specializing in next-generation rocket engine propulsion, has received funding from Lockheed Martin Ventures, the investment arm of aerospace and defense contractor Lockheed Martin, for an undisclosed amount. The product lineup at Lockheed Martin includes rockets.

The investment follows Venus’ successful high-thrust test flight of its rotating detonation rocket engine (RDRE) in May. Venus says it’s the only company in the world that makes a flight-proven, high-thrust RDRE with a “clear path to scaled production.”

Venus says the Lockheed Martin Ventures investment reflects the potential of Venus’ dual-use technology for defense and commercial uses.

“Venus has proven in flight the most efficient rocket engine technology in history,” Venus co-founder and CEO Sassie Duggleby, a board member of the Texas Space Commission, said in a news release. “With support from Lockheed Martin Ventures, we will advance our capabilities to deliver at scale and deploy the engine that will power the next 50 years of defense, space, and commercial high-speed aviation.”

Chris Moran, executive director and general manager of Lockheed Martin Ventures, said Lockheed Martin has been a longtime supporter of early-stage “transformational” technologies.

“Our investment in Venus Aerospace reflects a conviction that next-generation propulsion will define which nations lead in space and defense for decades to come,” Moran added in the release. “We are committed to helping Venus scale this technology and integrate it into critical systems.”

Since its founding in 2020, Venus has secured more than $106 million in funding. In addition to Lockheed Martin Ventures, investors include Airbus Ventures, America’s Frontier Fund, Trousdale Ventures, and Prime Movers Lab. Supporters of Venus include NASA, the Air Force Research Lab and the Defense Advanced Research Projects Agency (DARPA).

8+ can't-miss Houston business and innovation events for November

where to be

Editor's note: Houston’s innovation calendar is packed this November, with opportunities to connect across climatetech, health care and entrepreneurship. From Greentown Labs’ flagship summit and veteran-led showcases to discussions on medical innovation and startup growth, here's what not to miss and how to register. Please note: this article may be updated to include additional event listings.

Nov. 4 – Greentown Climatetech Summit

Greentown Labs' Climatetech Summit Houston will bring together philanthropists, executives and innovators in the energy transition space. Expect to hear from John Arnold, co-founder and co-chair of Arnold Ventures, and Greentown CEO Georgina Campbell Flatter, who will participate in the day-long event’s keynote fireside chat, along with remarks from Houston Mayor John Whitmire, a course led by TEX-E Executive Director Sandy Guitar and more. Ten Greentown Labs startups will present pitches, and attendees will also be able to meet founders and Greentown members during the afternoon startup showcase.

This event is Tuesday, Nov. 4, from 8 a.m.-4:30 p.m. at Greentown Labs. A networking reception follows from 5-7:30 p.m. at Axelrad Houston. Learn more here.

Nov. 11 – Veterans & Visionaries

Houston Veteran Network will celebrate the entrepreneurial spirit of veterans at its Veterans & Visionaries event. Veteran business owners will have the opportunity to showcase their businesses, connect with investors and participate in speed networking.

This event is Tuesday, Nov. 11, from 2-7 p.m. at the Ion. Find more information here.

Nov. 12 – Energy Drone and Robotics Forum

The Energy Drone + Robotics Coalition will offer a chance for industry leaders, operators and engineers to connect. Attendees will explore real-world uses, hear lessons from successful deployments, and gain practical insights and tools for scaling through various workshops, keynote addresses, Q&As and more.

This event is Wednesday, Nov. 12, from 8 a.m.-5:30 p.m. at the Ion. A Bots & Brews / Industrial AI Connect Reception will be held at Second Daught from 5:30-7:30 p.m. Find more information here.

Nov. 12 – TMC Envision 2025: Showcasing Healthcare Innovation

Celebrate 10 years of TMC Innovation at Envision, which shines a light on how TMC’s health tech companies are shaping the future. The event will feature talks from TMC’s Devin Dunn, Jason Sakamoto and Tom Luby that will focus on hospital innovation, health care policies, Texas-specific funding and regulatory dynamics and more.

This event is Wednesday, Nov. 12, from 3:30-6:30 p.m. at TMC Innovation Factory. Find more information here.

Nov. 13 — 2025 Houston Innovation Awards

Join InnovationMap at Greentown Labs on Nov. 13 for the fifth annual Houston Innovation Awards. Our annual celebration of all things Houston innovation offers an exclusive opportunity to network with leaders in the innovation ecosystem and culminates in the awards ceremony, where this year's winners across 10 prestigious categories will be unveiled. Individual tickets and corporate 10-packs with reserved seating are still available.

This event is Thursday, Nov. 13 at 7 p.m. at Greentown Labs. Get your tickets here.

Nov. 13 – Houston Methodist Leadership Speaker series

Head to the Houston Methodist Tech Hub at Ion to hear the latest installment of the Houston Methodist Leadership Speaker Series. The month’s event will feature Dr. Shlomit Schaal, executive vice president and chief physician executive at Houston Methodist. She is also the president and CEO of the Houston Methodist Physician Organization. Schaal will focus on physician group innovation.

This event is Thursday, Nov. 13, from 4:45-6 p.m. at the Ion. Find more information here.

Nov. 18 – Rice Customer-based Strategy Symposium

Rice University’s Jones Graduate School of Business will present this recurring forum for exchanging innovative ideas on customer-centered strategy planning and execution. The symposium features peer-reviewed research from leading academics with industry trends and insights from executives. Hear from Jones School Dean Peter Rodriguez, Harris County Sheriff Ed Gonzalez, Laura Lopez, SVP of marketing, communications and public relations at Houston Methodist; Farid Virani, CEO of Prime Communications; and several Rice MBA graduates and executives.

This event is Tuesday, Nov. 18, 2025, from 7:30 a.m.-3:00 p.m. at the Ion. Learn more here.

Nov. 20 – Houston Startup Speedrun

Wade Pinder, founder of Product Houston, will host the Houston Startup Speedrun. This intensive and fast-paced program is designed to provide early-stage founders and aspiring entrepreneurs with a comprehensive understanding of the “Startup Founder's Journey” and the Houston startup ecosystem. The event is broken up into 10 consecutive 50-minute sessions, including topics such as “Creating a Compelling Business Plan,” “Operations and Scaling” and others.

This event is Thursday, Nov. 20, from 9 a.m.-7 p.m. at the Ion. Find more information here.

Nov. 20 – State of the Texas Medical Center

The Greater Houston Partnership will present the State of the Texas Medical Center. Hear from William F. McKeon, president and CEO of TMC, and GHP president and CEO Steve Kean as they discuss “the tremendous progress happening in health care delivery and life sciences in the world’s largest medical center.”

This event is Thursday, Nov. 20, from 4-6:30 p.m. at Helix Park. Find more information here.