Investors name most promising energy tech startups at annual Houston event

ones to watch

The Rice Alliance for Technology and Entrepreneurship handed out awards to the founders of the most promising companies that pitched. Photo courtesy of Slyworks Photography/Rice Alliance

Nearly 100 energy tech startups pitched at the 19th annual Rice Alliance Energy Tech Venture Forum this week — and over a third of those companies are based in the Houston area.

At the conclusion of the event — which took place on Thursday, September 15, at Rice University, and included a day full of company pitches, panels, and thought leadership — 10 startups were deemed the most promising among their peers. The group was voted on by investors attending office hours ahead of the event.

The Rice Alliance for Technology and Entrepreneurship facilitated nearly 700 meetings between 70 investor groups and 90 ventures, according to the organization. The group of presenting companies included participants from Rice's Clean Energy Accelerator's first two cohorts.

Here are 10 of the energy tech industry's most promising companies — and the technology they are working on that's set to disrupt the status quo.

Arolytics

Based in Calgary and founded in 2018, Arolytics is a software company that specializes in emissions management, ESG performance, and regulatory compliance. The company's platform is able to save its users up to 40 percent of their associated measurement costs and emissions management.

Atargis Energy

Atargis Energy is based in Pueblo, Colorado, and is a a member of Rice's second cohort of its Clean Energy Accelerator. The company has developed a twin hydrofoil-based wave energy converter that creates electric power from ocean waves. The technology is paired with real-time sensors and machine learning to optimize power conversion.

Compact Membrane Systems

Based in Delaware, Compact Membrane Systems, is pioneering membrane systems for decarbonizing hard-to-abate chemical manufacturing and industrial carbon capturing. The technology has the potential to revolutionize the chemicals industry.

Dimensional Energy

Dimensional Energy, based in Ithaca, New York, is transforming carbon dioxide into sustainable aviation fuels and products at market competitive prices. The technology integrates carbon capture, electrolysis, and Fischer Tropsch synthesis.

Kanin Energy

Headquartered in Houston, Kanin Energy works with heavy Industry to turn their waste heat into a clean baseload power source. The platform also provides tools such as project development, financing, and operations.

Orbital Sidekick

Orbital Sidekick, based in San Francisco, is an intelligence and analytics company that specializes in remote detection of environmental hazards by way of hyperspectral satellites. The technology provides actionable insights for its customers.

Power to Hydrogen

Based in Columbus, Ohio, Power to Hydrogen has developed an AEM-based electrolysis technology that produces high pressure, high efficiency hydrogen at low cost via water and renewable energy.

Quino Energy

Another Clean Energy Accelerator Class 2 member, Quino Energy produces flow battery systems with over eight hours of energy storage. The batteries are cheaper than lithium-ion alternatives, as well as being safer and easier to scale.

STARS Technology

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.

Syzygy Plasmonics

Houston-based Syzygy Plasmonics is commercializing its light-reacting energy, which would greatly reduce carbon emissions in the chemical industry. The technology originated out of Rice University.

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6 female-founded startups shaping the Houston innovation ecosystem

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Female-founded businesses reached a new milestone last year. According to payroll company Gusto, female founders launched 49 percent of new businesses in 2024, reaching near parity with male-founded businesses for the first time.

And though they still face challenges, with access to VC funding at the top of the list, those women-led companies are driving major impact in the startup and innovation ecosystem.

The fifth-annual Houston Innovation Awards will honor six women-led startups that are shaping Houston innovation in our Female-founded Businesses category.

The finalists for the 2025 award, selected by our esteemed panel of judges, range from a company developing natural carbon-free fuel to another launching at-home sleep apnea technology.

Read more about these innovative startups and the visionary female founders behind them 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.

Anning Corporation

Clean energy company Anning Corporation is working to develop geologic hydrogen, a natural carbon-free fuel, using its proprietary stimulation approaches and advanced exploration modeling. The company said that geologic hydrogen has the potential to be the lowest-cost source of reliable baseload electricity in the U.S.

The company was founded by CEO Sophie Broun in 2024 and is a member of Greentown Labs. Last month, it also announced that it was chosen to participate in Breakthrough Energy’s prestigious Fellows Program. Anning raised a pre-seed round this year and is currently raising a $6 million seed round.

Bairitone Health

Bairitone Health is bringing anatomy imaging for sleep apnea to the home environment. The company's platform maps users' anatomy during natural sleep using a facial patch to determine the root cause of airway obstruction. It then offers effective therapies for each patient. The system is currently in the research and development phase and is being used in clinical trials and studies.

The company was founded in 2022 in the Texas Medical Center's Biodesign program by CEO Meagan Pitcher, CTO Onur Kilic and chief medical officer Britt Cross. It was a member of Activate Houston's inaugural cohort and has participated in numerous accelerators and incubators. It raised a pre-seed round last year of $435,000.

Brain Haven

Founded at the University of Houston, Brain Haven is developing neuroscience-based, clinically validated protocols that use sensory stimulation through smell and sound to offer a natural and non-invasive way to activate the brain and preserve neuroplasticity. The company aims to deliver an accessible and affordable way for the aging population to preserve memory, delay cognitive decline and improve quality of life.

The company was co-founded by Gail Aflalo, a graduate student in the University of Houston College of Optometry, and Jokūbas Žiburkus, an associate professor in the department of biology and biochemistry at UH. It was selected to participate in the 2024 Innov8 Cohort, where it won the cohort's Startup Pitch Day, and was included in Class 13 of UH RED Labs. Brain Haven was awarded $70,000 in seed funding from UH in June 2025 to support a year-long research initiative in adults aged 50 and above.

FlowCare

Sugar Land-based FlowCare is developing a period health platform that integrates smart dispensers, education and healthcare into one system to make free, high-quality organic period products more accessible.

The company was founded by CEO Tanu Jain, a registered nurse and product management executive, in 2024. It participated in the TiE Women Program and the Houston Community College Business Plan Competition, placing in the top five in both pitch competitions.

March Biosciences

Houston cell therapy company March Biosciences aims to treat unaddressed challenging cancers, with its MB-105, a CD5-targeted CAR-T cell therapy for patients with relapsed or refractory CD5-positive T-cell lymphoma, currently in Phase 2 clinical trials.

The company was founded in 2021 by CEO Sarah Hein, Max Mamonkin and Malcolm Brenner and was born out of the TMC Accelerator for Cancer Therapeutics. The company completed a $29.6 million series A last year and also raised a $4.2 million seed round.

TrialClinIQ

Houston-based TrialClinIQ is an AI-powered clinical trial recruitment platform that helps identify, qualify and enroll eligible patients in appropriate trials faster and more accurately.

The company was founded in 2025 by CEO Jontel Pierce and Janette Obi.

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The Houston Innovation Awards program is sponsored by Houston Community College, Houston Powder Coaters, FLIGHT by Yuengling, and more to be announced soon. For sponsorship opportunities, please contact sales@innovationmap.com.

Former NASA astronaut, official joins Venus Aerospace board

astronaut appointment

Retired Air Force colonel and former NASA astronaut Pamela Melroy, who previously served as deputy administrator of NASA, recently joined the board of directors at Houston-based Venus Aerospace.

Venus Aerospace, a startup founded in 2020, develops rocket engine technology, including rotating rocket detonation engines for hypersonic flights. These engines promise higher power, greater fuel efficiency and lower emissions than conventional rocket engines or jet engines, according to the Interesting Engineering website. The global rocket propulsion market is expected to grow from $9.5 billion in 2025 to $29.9 billion by 2034, according to a forecast by ResearchAndMarkets.com.

“Advanced rocket propulsion has been of interest to me for over a decade, and Venus Aerospace’s recent achievements in demonstrating the stability of rotating detonation rocket engines represent a significant development,” says Melroy, who left NASA earlier this year and is now a self-employed consultant living in Arlington, Virginia.

Melroy, a member of the United States Astronaut Hall of Fame, has built an illustrious career in the aerospace sector. Aside from being a NASA official, she was:

  • One of only two female astronauts to command a space shuttle mission
  • Deputy program manager of Orion space exploration initiatives at aerospace and defense contractor Lockheed Martin
  • Senior technical adviser and director of field operations for the Federal Aviation Administration’s Office of Commercial Space Transportation, where she came up with the first safety guidelines for commercial human spaceflight
  • Deputy director of the Tactical Technology Office at the Defense Advanced Research Projects Agency (DARPA).
  • An adviser for the establishment of the Australian Space Agency

Venus Aerospace said in a news release that as a leader at three federal agencies, “Melroy shaped America’s strategy in space, accelerated commercial space partnerships, and deepened space exploration.”

Sassie Duggleby, co-founder and CEO of Venus Aerospace, called Melroy “a preeminent leader in the world of aerospace.”

In May, Venus Aerospace completed the inaugural test flight of its rotating detonation rocket engine. The startup, whose headquarters is at the Houston Spaceport, says it’s the only company in the world that has manufactured a flight-proven, high-thrust rotating detonation rocket engine.

On the horizon for Venus Aerospace is production of Stargazer M4, a high-speed aircraft capable of two-hour global travel.

Venus Aerospace’s investors include Airbus Ventures, America’s Frontier Fund, Trousdale Ventures, and Prime Movers Lab. The startup also gets support from the Air Force Research Laboratory (AFWERX), the Air Force, NASA and DARPA.

Jordan Blashek, co-founder and managing partner of America’s Frontier Fund, which backs startups creating breakthrough technologies, said his firm’s investment in Venus Aerospace “underscores our focus on supporting American companies that are revolutionizing industries of the future.”

“With recent hypersonic advancements from China and Russia, safeguarding American innovation and securing our industrial base has never been more urgent,” Blashek added. “Venus Aerospace is poised to redefine hypersonic flight and ensure America’s continued leadership in aerospace innovation.”

Since its founding, Venus Aerospace has raised $78.3 million in investments, according to PitchBook data.

Texas-based energy startup raises $1 billion on heels of Houston expansion

Powering Up

Austin-based startup Base Power, which offers battery-supported energy in the Houston area and other regions, has raised $1 billion in series C funding—making it one of the largest venture capital deals this year in the U.S.

VC firm Addition led the $1 billion round. All of Base Power’s existing major investors also participated, including Trust Ventures, Valor Equity Partners, Thrive Capital, Lightspeed Venture Partners, Andreessen Horowitz (a16z), Altimeter, StepStone Group, 137 Ventures, Terrain, Waybury Capital, and entrepreneur Elad Gil. New investors include Ribbit Capital, Google-backed CapitalG, Spark Capital, Bond, Lowercarbon Capital, Avenir Growth Capital, Glade Brook Capital Partners, Positive Sum and 1789 Capital Management.

Coupled with the new $1 billion round, Base Power has hauled in more than $1.27 billion in funding since it was founded in 2023.

Base Power supplies power to homeowners and the electric grid through a distributed storage network.

“The chance to reinvent our power system comes once in a generation,” Zach Dell, co-founder and CEO of Base Power, said in a news release. “The challenge ahead requires the best engineers and operators to solve it, and we’re scaling the team to make our abundant energy future a reality.”

Zach Dell is the son of Austin billionaire and Houston native Michael Dell, chairman and CEO of Round Rock-based Dell Technologies.

In less than two years, Base Power has developed more than 100 megawatt-hours of battery-enabled storage capacity. One megawatt-hour represents one hour of energy use at a rate of one million watts.

Base Power recently expanded its service to the city of Houston. It already was delivering energy to several other communities in the Houston area. To serve the Houston region, the startup has opened an office in Katy.

The startup also serves the Dallas-Fort Worth and Austin markets. At some point, Base Power plans to launch a nationwide expansion.

To meet current and future demand, Base Power is building its first energy storage and power electronics factory at the former downtown Austin site of the Austin American-Statesman’s printing presses.

“We’re building domestic manufacturing capacity for fixing the grid,” Justin Lopas, co-founder and chief operating officer of Base Power, added in the release. “The only way to add capacity to the grid is [by] physically deploying hardware, and we need to make that here in the U.S. ... This factory in Austin is our first, and we’re already planning for our second.”

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This article originally appeared on EnergyCapitalHTX.com.

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