Investors name most promising energy tech startups at annual Houston event

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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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European spacecraft developer expands to Houston with U.S. business, new lab

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European aerospace manufacturer The Exploration Company has established its first U.S. entity and named Space City as its headquarters.

The company announced earlier this month that it has launched TEC Federal to support U.S. government customers and agencies, and to scale The Exploration Company's engineering operations in the country.

Mark Kirasich serves as president of TEC Federal. Kirasich most recently served as the senior director of human spaceflight at Blue Origin after a nearly 40-year career at NASA.

The Exploration Company is developing the reusable Nyx space vehicle. Nyx is designed to take off from any heavy launcher in the world. It will then dock at space stations, retrieve up to 3,000 kilograms of cargo, splash down and return the cargo to Earth. The company aims to make Nyx fully reusable for up to 10 missions, making it a more affordable and sustainable option for aerospace missions.

The Exploration Company completed a successful drop test of the spacecraft in May in the Mojave Desert. The company says Nyx is slated to perform its first flight demonstration in 2028.

In addition to launching the Houston business, The Exploration Company also opened its new Rapid Innovation Lab near Houston's NASA Johnson Space Center on Space Park Drive.

The Exploration Company opened its Rapid Innovation Lab earlier this month. Photo via LinkedIn

The Rapid Innovation Lab features a full-scale mockup of the future Nyx crew capsule as well as ongoing development and testing of the Nyx cargo capsule, according to the company.

The Exploration Company says the new lab will allow its engineers, designers, and operators to prototype and test crew interfaces. It will also support partnerships with NASA personnel and astronauts.

“Houston gives us direct access to the people and expertise that have built and operated human spaceflight systems for decades. We’re excited to invest and expand around that— engineers, operators, and astronauts working together and moving quickly towards building a crew capsule.” Hélène Huby, founder and CEO of The Exploration Company, said in a blog post.

According to The Houston Chronicle, The Exploration Company has about 30 employees in the Houston area.

The company was founded in 2021 by Huby, a French rocket scientist, and has raised more than $350 million in venture capital. It operates out of Germany, France, Luxembourg, Spain and Italy, with offices in the U.S. and the United Arab Emirates. It is also developing a reusable, high-thrust rocket engine known as Storm.

Exciting XSpace expansion plans + more top Houston innovation headlines

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Editor's note: The top Houston innovation headlines for the first half of July include XSpace's expansion and KBR's C-suite hires. Here is a recap of the five most-read InnovationMap stories published July 1-15, 2026:

1. XSpace plans $250M industrial condo expansion with RAFA Racing Club

nullXSpace plans $250M industrial condo expansion with RAFA Racing Club

Houston-based XSpace Group has teamed up with two other Houston companies, RAFA Racing Club and Maximo Capital, to develop five industrial condo projects that pair flex space and high-end car storage space with a members-only clubhouse for motorsports enthusiasts. The five projects will be built in the Dallas-Fort Worth; Miami-Boca Raton; Charlotte-Mooresville, North Carolina; Phoenix-Scottsdale; and Los Angeles markets. Continue reading.

2. KBR names C-suite duo to lead $5.3B government services spinoff

In advance of the spinoff of its Mission Technology Solutions unit, Houston-based KBR has made two C-suite hires for the new business. Michael LaRouche is coming aboard as president and CEO of the spinoff, currently called SpinCo, on Sept. 26. Nicholas Veasey joined as executive vice president and chief financial officer on July 1. Continue reading.

3. Experts: Houston's VC ecosystem has set the foundation — now we need scale

Fervo Energy went public earlier this summer. The Houston geothermal company priced its IPO at $27 per share, raised $1.89 billion, and opened the next morning at a market capitalization north of $10 billion. By most measures, it is the largest venture-backed cleantech IPO in history and an unambiguous win for Houston. It’s also a useful moment to look at where Houston's venture ecosystem stands and where it can go. The highlight: Houston's venture ecosystem has real foundations and, with increased company formation activity, can grow into the scale our city's ambitions deserve. Continue reading.

4. $12M pharmaceutical manufacturing facility to be built in Sugar Land

A nearly $12 million drug manufacturing facility is coming to Sugar Land. City leaders in Sugar Land recently approved a $1.3 million performance-based incentive for DeliverIt Group, a Sugar Land-based provider of specialty pharmacy, infusion therapy and clinical care services, for the development of the 60,000-square-foot facility. Continue reading.

5. Walmart expands drone delivery service to 8 new Houston-area stores

More Walmart delivery drones are now buzzing around Houston-area skies. In January, Walmart launched its drone delivery service in partnership with Wing at five locations in the Houston area. The retail giant just added eight more stores to its Houston-area drone delivery network. Wing says the expansion makes drone delivery available to more than 1 million residents of the Houston area. Continue reading.

UH lands $4M NIH grant to study early signs of autoimmune disease

NIH funding

The University of Houston recently received a $4 million National Institutes of Health grant to support a 10-year longitudinal study to identify the earliest biological markers of autoimmune disease.

Led by Chandra Mohan, the Hugh Roy and Lillie Cranz Cullen Endowed Professor of Biomedical Engineering, the study aims to examine what causes Systemic Autoimmune Rheumatic Diseases (SARDs) and to identify targets for future treatments. The study will be carried out in collaboration with Dr. Karen Costenbader at Harvard Medical School, Boston.

SARDs include conditions like rheumatoid arthritis, systemic lupus erythematosus, Sjögren’s syndrome and systemic sclerosis—all are considered chronic diseases currently without a cure. Autoimmune diseases affect over 30 million people globally, according to UH.

SARDs occur when the body’s immune system attacks healthy, non-threatening tissues and organs. According to UH, in these diseases, the body often attacks nuclear antigens, creating anti-nuclear autoantibodies, which can be early detection signs for SARDs in more than 50 percent of patients, Mohan says.

Researchers will study blood samples and environmental exposure over the 10 years to better understand anti-nuclear autoantibodies.

“Collectively, these studies will help identify the genetic, environmental and cellular factors that are operative at the two steps of SARD development, namely the emergence of anti-nuclear autoantibodies and disease onset,” Mohan said in a news release. “ More importantly, these studies will highlight functional molecular pathways and mechanisms that may be operative at each step."

Mohan predicts that looking at SARDs’ shared characteristics, rather than each disease individually, could help identify more treatment methods.

“Individual SARDs have been examined in silos without an attempt to discern shared underlying features at the molecular level,” he added in the release. “Current understanding of the initial (and likely shared) origins of SARDs is only rudimentary but urgently needed to develop means for prevention and treatment.”

Earlier this year, UH also received an $11 million NIH grant to conduct a first-of-its-kind study of early language development in children ages 18 to 24 months. Read more here.

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