Greentown Labs adds 5 new Houston startups to climatetech incubator

Going Green

Greentown Labs has announced its newest climatetech incubator cohort. Photo via GreentownLabs.com

Greentown Labs announced that it added five startups to its Houston community in Q1 of 2025.

The companies are among a group of 19 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 "green" applications, from converting plastic waste into sustainable materials to developing energy-storage solutions.

The new Houston members include:

  • Concept Loop, a project of Pakistan-based Innova8e Inc., aims to repurpose post-industrial and post-consumer plastic waste into sustainable building materials.
  • GeoFuels, a Sugar Land-based company that produces hydrogen by using baseload geothermal power and methane pyrolysis.
  • PLASENE, a Houston-based company with an innovative platform that converts plastic waste into liquid fuel and low-carbon hydrogen through its proprietary catalysts and modular, scalable, pre-engineered units platform. The company was named to Greentown's ACCEL Year 3 cohort earlier this year.
  • RepAir Carbon, an Israeli company with a fully electric, zero-heat carbon-removal technology that consumes minimal energy, operates without liquids or solvents, and produces no hazardous materials or waste.
  • RotorVault from Pasadena, California, is commercializing energy-storage and load-following solutions that are containerized, modular, and field-deployable systems built on flywheel technology.

Fourteen other companies will join Greentown Boston's incubator. See the full list here.

PLASENE and five other new members—Thola, Respire Energy, Andros Innovations, FAST Metals and Tato Labs—join Greentown Labs through its most recent Advancing Climatetech and Clean Energy Leaders Program, or ACCEL, cohort. ACCEL, which works to advance BIPOC-led startups in the climatetech space, announced its third cohort last month.

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A version of this story originally appeared on our sister site, EnergyCapitalHTX.

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EnergyCapitalHTX is now live and reporting on Houston's role in the energy transition. Photo via Getty Images

Gow Media's media platform launches to report on Houston energy transition news

it's go time

Houston's newest media platform has officially gone live.

EnergyCapitalHTX.com, originally announced in March, is now up and running. Houston-based Gow Media, a multi-platform media company and the parent company of InnovationMap, CultureMap, SportsMap, and ESPN Radio 97.5FM and 92.5FM, launched the site tonight at an event at Gow Media's office.

“We are excited to roll out our new outlet, EnergyCapitalHTX.com. We have been very impressed by Houston’s efforts to lead the global transition of energy and to address the 'dual challenge' of meeting the world’s growing demand for energy while at the same time reducing carbon emissions,” says David Gow, CEO of Gow Media.

“On our new site, we plan to provide informative, unbiased coverage of the Houston-based initiatives, spanning big corporations and startups," he continues. "We hope that a site dedicated to the transition will bring visibility to the city’s substantive progress and to the path forward.”

The site will cover Houston's energy transition ecosystem — the people, companies, capital sources, and numerous initiatives in Houston. Lindsey Ferrell serves as the inaugural editor of the site.

The site’s inaugural sponsor is HETI, which launched in 2021. Led by Executive Director Jane Stricker, HETI was founded to drive economic growth in the Houston area within the energy transition toward a lower carbon future.

“We are excited to support Gow Media with the launch EnergyCapitalHTX.com,” Stricker says in an earlier news release. "There is so much innovative and exciting activity in our ecosystem. Houston is the Energy Capital of the World, and this platform will amplify the energy leadership that is already happening here.”

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3 Houston innovators who made headlines in May 2025

Innovators to Know

Editor's note: Houston innovators are making waves this month with revolutionary VC funding, big steps towards humanoid robotics, and software that is impacting the agriculture sector. Here are three Houston innovators to know right now.

Zach Ellis, founder and partner of South Loop Ventures

Zach Ellis. Photo via LinkedIn

Zach Ellis Jr., founder and general partner of South Loop Ventures, says the firm wants to address the "billion-dollar blind spot" of inequitable distribution of venture capital to underrepresented founders of color. The Houston-based firm recently closed its debut fund for more than $21 million. Learn more.

Ty Audronis, CEO and founder of Tempest Droneworx

Ty Audronis, CEO and founder of Tempest Droneworx

Ty Audronis, center. Photo via LinkedIn.

Ty Audronis and his company, Tempest Droneworx, made a splash at SXSW Interactive 2025, winning the Best Speed Pitch award at the annual festival. The company is known for it flagship product, Harbinger, a software solution that agnostically gathers data at virtually any scale and presents that data in easy-to-understand visualizations using a video game engine. Audronis says his company won based on its merits and the impact it’s making and will make on the world, beginning with agriculture. Learn more.

Nicolaus Radford, CEO of Persona AI

Nicolaus Radford, founder and CEO of Nauticus RoboticsNicolaus Radford. Image via LinkedIn

Houston-based Persona AI and CEO Nicolaus Radford continue to make steps toward deploying a rugged humanoid robot, and with that comes the expansion of its operations at Houston's Ion. Radford and company will establish a state-of-the-art development center in the prominent corner suite on the first floor of the building, with the expansion slated to begin in June. “We chose the Ion because it’s more than just a building — it’s a thriving innovation ecosystem,” Radford says. Learn more.

Pharmaceutical giant plans $5.9B Houston facility and more news to know

Trending News

Editor's note: It's time to look back at the top Houston innovation news from the second half of May 2025. From exciting VC raises to major manufacturing facilities in the works, here are the most-read InnovationMap stories from May 16-30.

1. Pharmaceutical giant looks to bring $5.9 billion facility to Houston

Eli Lilly is looking to build an active pharmaceutical ingredient manufacturing facility at Generation Park. Rendering courtesy of McCord

Pharmaceutical company Eli Lilly and Company is looking to build a $5.9 billion active pharmaceutical ingredient (API) manufacturing facility in Houston, according to a recent filing with the state of Texas.

The proposal states that the project plans to employ 604 full-time direct employees at the site upon ramp-up completion. Construction is projected to begin in 2026, with a completion target of 2030 and commercial operations beginning in 2031. Continue reading.

2. Houston VC firm closes $21M fund for underrepresented founders

Zach Ellis, founder and general partner of South Loop Ventures, which recently closed its debut fund. Photo via LinkedIn

Houston-based South Loop Ventures recently closed its debut fund for more than $21 million, led by investments from Rice Management Company and Chevron Technology Ventures.

The funds will go toward teams with at least one underrepresented founder of color working in the energy, health, space, sports and fintech sectors. Additional investments came from The Great Commission Foundation of the Episcopal Diocese of Texas, Texas CapitalBank and others organizations. Continue reading.

3. Houston-founded startup raises $1.2M and moves headquarters to Detroit

ChurchSpace, founded in Houston by Day Edwards and Emmanuel Brown, is moving to Detroit. Photo courtesy ChurchSpace.

Houston-founded ChurchSpace, known as the Airbnb for churches, has formed an official partnership with the City of Detroit and will relocate its headquarters.

The announcements come as the company successfully closed a $1.2 million oversubscribed funding round. The round was led by California-based Black Ops Ventures, with participation from Michigan Rise and Dug Song of Minor Capital, who is also the founder of the Song Foundation, another Michigan-based organization. Continue reading.

4. Houston aerospace co. soars with first U.S. test flight of hypersonic engine

Venus Aerospace successfully completed the flight test of its hypersonic engine, the first of an American-developed engine of its kind. Photo courtesy Venus Aerospace

Houston-based Venus Aerospace successfully completed the first U.S. flight test of its proprietary engine at a demonstration at Spaceport America in New Mexico.

Venus’ next-generation rotating detonation rocket engine (RDRE) is supported by a $155,908 federal Small Business Innovation Research (SBIR) grant from NASA and aims to enable vehicles to travel four to six times the speed of sound from a conventional runway. The recent flight test was the first of an American-developed engine of its kind. Continue reading.

5. Houston regenerative medicine company expands lab for future trials

FibroBiologics has opened a new 10,000-square-foot Houston lab to scale up research efforts and pave the way for in-house manufacturing. Photo via Fibrobiologics.com

A Houston regenerative medicine company has unveiled new laboratory space with the goal of expanding its pioneering science.

FibroBiologics uses fibroblasts, the body’s most common type of cell, rather than stem cells, to help grow new cells. With its new space, the publicly traded company, which has more than 240 patents issued or pending, will be even better equipped to power forward with its research. Continue reading.

Houston university to launch artificial intelligence major, one of first in nation

BS in AI

Rice University announced this month that it plans to introduce a Bachelor of Science in AI in the fall 2025 semester.

The new degree program will be part of the university's department of computer science in the George R. Brown School of Engineering and Computing and is one of only a few like it in the country. It aims to focus on "responsible and interdisciplinary approaches to AI," according to a news release from the university.

“We are in a moment of rapid transformation driven by AI, and Rice is committed to preparing students not just to participate in that future but to shape it responsibly,” Amy Dittmar, the Howard R. Hughes Provost and executive vice president for academic affairs, said in the release. “This new major builds on our strengths in computing and education and is a vital part of our broader vision to lead in ethical AI and deliver real-world solutions across health, sustainability and resilient communities.”

John Greiner, an assistant teaching professor of computer science in Rice's online Master of Computer Science program, will serve as the new program's director. Vicente Ordóñez-Román, an associate professor of computer science, was also instrumental in developing and approving the new major.

Until now, Rice students could study AI through elective courses and an advanced degree. The new bachelor's degree program opens up deeper learning opportunities to undergrads by blending traditional engineering and math requirements with other courses on ethics and philosophy as they relate to AI.

“With the major, we’re really setting out a curriculum that makes sense as a whole,” Greiner said in the release. “We are not simply taking a collection of courses that have been created already and putting a new wrapper around them. We’re actually creating a brand new curriculum. Most of the required courses are brand new courses designed for this major.”

Students in the program will also benefit from resources through Rice’s growing AI ecosystem, like the Ken Kennedy Institute, which focuses on AI solutions and ethical AI. The university also opened its new AI-focused "innovation factory," Rice Nexus, earlier this year.

“We have been building expertise in artificial intelligence,” Ordóñez-Román added in the release. “There are people working here on natural language processing, information retrieval systems for machine learning, more theoretical machine learning, quantum machine learning. We have a lot of expertise in these areas, and I think we’re trying to leverage that strength we’re building.”

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