Greentown Labs combines forces with MassChallenge to support more climate startups

strategic partnership

Greentown Labs and MassChallenge have formed a strategic partnership. Photo courtesy Greentown Labs.

Climatetech incubator Greentown Labs has formed a strategic partnership with global zero-equity accelerator MassChallenge.

The two organizations have headquarters in the Boston area, while Greentown Labs is also co-located in Houston. MassChallenge has a hub in Dallas, as well as others in Israel, Switzerland and the United Kingdom.

The new partnership aims to strengthen the ecosystem for early-stage climatetech startups by providing more mentorship, support and a broader commercialization network for members, according to a news release.

Greentown Labs will share its expertise with the 23 startups in MassChallenge's first climate-specific accelerator, known as the MassChallenge Early Stage Climate program. Additionally, Greentown Labs members will benefit from MassChallenge's network of expert mentors, judges, entrepreneurs, partners, investors, philanthropists and others.

“There are so many synergies and shared values between MassChallenge and Greentown that launching a collaboration like this feels like a natural next step for our organizations as we strive to support as many early-stage climate founders as possible,” Georgina Campbell Flatter, Greentown Labs CEO, said in the news release. “We want to reduce the friction and barriers to market for these climate entrepreneurs and ultimately increase their opportunity for success—ecosystem collaboration is an essential part of solving these challenges together.”

Combined, Greentown and MassChallenge report that they have supported more than 4,500 founders and more than 1,000 climate startups. MassChallenge has awarded more than $18 million in equity-free grants to startups, which have gone on to raise over $15 billion, since it was founded in 2009. Greentown Labs has helped more than 575 startups raise more than $8.2 billion in funding since it launched in 2011.

Greentown recently added five startups to its Houston community and 14 other climatetech ventures to its Boston incubator. It also announced its third ACCEL cohort, which works to advance BIPOC-led startups in the climatetech space, earlier this year. Read more here.

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Five companies have joined Greentown Labs Houston, specializing in various "green" applications, from converting plastic waste into sustainable materials to developing energy-storage solutions. Photo courtesy Greentown Labs.

Greentown Labs announces newest startups to join Houston climatetech incubator

green team

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.

From potato-starch-based bioplastics startups to companies developing carbon-coated silicon anodes, here's who's joining Greentown Labs and Browning the Green Space's ACCEL program. Photo via browningthegreenspace.org

2 Houston startups join Greentown Labs' BIPOC-led accelerator program

seeing green

Greentown Labs and Browning the Green Space announced the newest cohort for its Advancing Climatetech and Clean Energy Leaders Program, or ACCEL, which works to advance BIPOC-led startups in the climatetech space.

Two Houston companies and one from Austin are among the eight startups to be named to the 2025 group.

“The startups selected for the third ACCEL cohort represent a phenomenal range of energy and climatetech innovations, which underscores our belief that everyone and many solutions must play a role in our community’s collective decarbonization efforts,” Georgina Campbell Flatter, Greentown’s new CEO, said in a release. “We’re proud to welcome these entrepreneurs to our community and eager to see all they’ll achieve throughout the program and beyond!”

Each of the early-stage startups within the cohort will receive $25,000 in non-dilutive grant funding and participate in the year-long program focused on product and technology development, market development, fundraising and management, and team development, according to Greentown. The curriculum is led by VentureWell, a nonprofit with expertise in venture development in climatetech.

The Houston companies include:

Carbonext, founded by Olanrewaju Tanimola. The company is leveraging its proprietary, off-the-shelf 3D-graphene technology to develop integrated solutions with carbon-coated silicon anodes to address challenges in the graphite ecosystem, as well as lithium-battery anodes.
PLASENE, founded by Sohel Shaikh, Alper Gulludag and Romolo Raciti. The company offers an innovative platform that converts plastic waste into liquid fuel and low-carbon hydrogen through its proprietary catalysts and modular, scalable, pre-engineered units

The remaining six companies are:

Inductive Robotics, founded in Austin by Madhav Ayyagari and David Alspaugh. The startup deploys autonomous robots that deliver EV charging directly to parked vehicles in commercial parking facilities, using a subscription-based model.
Andros Innovations, founded in Cambridge, Massachusetts by Laron Burrows. The startup has developed a reactor that produces ammonia more cheaply, cleanly and safely than traditional methods do.
FAST Metals, founded in Worcester, Massachusetts by Sumedh Gostu and Anthony Staley. It has developed a hydrometallurgical-recovery process capable of extracting iron, aluminum, scandium, titanium, and other rare-earth elements from industrial tailings.
Respire Energy, founded in Boston by Dave Hsu, Xiaowei Teng, and Candy Wong. The energy storage startup has developed a safe, low-cost, and long-duration metal-air battery designed for microgrids.
Tato Labs, founded in Brooklyn by Mecca McDonald and Mia Dunn. It is developing scalable, innovative, bioplastic products and packaging solutions that leverage potato starch, protect and preserve the natural ecosystem, and minimize plastic waste.
Thola, founded in Portland, Maine, by Nneile Nkholise and Lerato Takana. The company provides an on-demand marketplace for commercial-building sustainability and safety management, with a mission to decarbonize old buildings.

ACCEL is supported by the Massachusetts Clean Energy Center (MassCEC), Shell, Equinor, the Growth Capital Division of MassDevelopment, Microsoft and the Barr Foundation.

The accelerator has supported 13 early-stage startups since it was founded in 2023, resulting in $325,000 in grant funding. Houston companies have been represented in each cohort. Click here to see the 2024 cohort and here to see the inaugural 2023 cohort.

The seven selected startups will have year-long curated curriculum, incubation at Greentown's two locations, a non-dilutive $25,000 grant, and access to mentors, corporates, and more from both Greentown and BGS's networks. Photo via browningthegreenspace.org

Greentown Labs names latest cohort of BIPOC-led climatetech startups

browning the green space

Two organizations have named the seven startup participants for their accelerator that works to advance BIPOC-led startups in the climatetech space.

Greentown Labs and Browning the Green Space named the newest accelerator for the Advancing Climatetech and Clean Energy Leaders Program, or ACCEL. The seven selected startups will have year-long curated curriculum, incubation at Greentown's two locations, a non-dilutive $25,000 grant, and access to mentors, corporates, and more from both Greentown and BGS's networks.

"Building on the momentum and success of our inaugural year, Greentown Labs is proud to welcome this incredible cohort of BIPOC-led startups to Year 2 of ACCEL," Greentown Labs CEO and President Kevin Knobloch says in a news release. "These founders and their teams are developing a dynamic array of much-needed climatetech solutions, and we're privileged to support them on their startup journeys as they advance their technologies and grow their teams."

The 2024 cohort includes:

AtmoSpark Technologies, based in Houston, is an atmospheric water generation company with a patented electro-condensation technology, which has a lower energy footprint than that of current water-generation methods.
Cambridge, Massachusetts-based Aquasaic is harnessing biology to clean water for planetary and human health.
Houston-based Axis Sky Renewables creates innovative wind solutions, specializing in vertical-axis wind turbines that are less expensive to produce, deploy, and maintain than traditional wind turbines.
Carbon Negative Solutions, from Rock Hill, New York, is creating smart-city-ready, carbon-negative concrete products.
NYC-based Cellsense develops interactive bio-embellishments that create new possibilities for designers while eliminating microplastics and replacing fossil-fuel-based material at scale.
EcoForge, headquartered in Providence, Rhode Island, is a building-material technology company developing affordable, high-performance building materials from local agricultural residues, replacing energy-intensive, fossil-based materials.
Boston-based Sankofa Dynamics creates low-cost, eco-friendly solutions for water, air, and energy problems.

The program is supported by the Massachusetts Clean Energy Center, Microsoft's Climate Innovation Fund, Equinor, Barr Foundation.

"These BIPOC-led startups are developing climate technologies that will lead us to a more equitable and sustainable future," MassCEC CEO Dr. Emily Reichert, the former CEO of Greentown, says in the release. "We want ALL climatetech innovators and entrepreneurs to thrive here in Massachusetts. We are proud to support the ACCEL accelerator, created and led by Greentown Labs and Browning the Green Space. The ACCEL program is helping us build a more diverse innovation ecosystem by breaking down barriers and expanding opportunities."

ACCEL was announced in 2022, and the first cohort featured six climatetech startups — two based in Houston.

"Our second year of ACCEL brings together an inspirational and diverse cohort of seven BIPOC-led startups developing tech to accelerate the distribution of climate solutions that address community needs," Browning the Green Space President and Executive Director Kerry Bowie adds. "We are thrilled to continue to strengthen our partnership with Greentown Labs and VentureWell and build on the learnings from the pilot cohort to provide critical support infrastructure for entrepreneurs of color."

The ACCEL program kicks off at an event on March 6 at Greentown's Boston location.

The Houston Ion District Investor Activation Program is open to accredited investors and free to join. Photo via GreentownLabs.com

Greentown Houston announces new investor program to increase equity in climatetech funding

calling all funders

Greentown Labs has announced a new program to address inequity and unavailability of funding for early-stage climatetech startups.

The Houston Ion District Investor Activation Program is supported by a Build to Scale Capital Challenge grant from the U.S. Economic Development Administration, open to accredited investors, and free to join.

Participating investors will have access to curated startup introductions based on preferred stage, industry, check size, and more, plus access to information on startups and investor-specific newsletters featuring Greentown startups invite-only events.

"This program brings early-stage investors from Greater Houston into the fold, offering education on climatetech investing, channeling a pool of capital to young startups, and catalyzing a thriving climatetech investment ecosystem that prioritizes diversity, equity, and inclusion," reads the email announcing the program.

Members will also get networking opportunities with fellow investors and leading climatetech startups, which includes investor roundtables. Sector Pitch Days, and more Educational workshops on climatetech investing run by Vinson & Elkins, and more will be made available. The new initiative is meant “ to strengthen Houston’s energy-transition ecosystem” according to a news release.

In 2023, Greentown Labs helped 87 corporate partners, and collaborated with over 70 Houston startups. Some of their members recently achieved success in their respective fields.

The future of the oil and gas workforce isn't looking too bright when it comes to recruiting, the Wall Street Journal reports. Photo via Getty Images

Report: College enrollment in petroleum programs — including in Texas — sees historic drop

looking forward

Student enrollment in petroleum engineering programs at universities — including Texas schools — has dropped significantly, according to a recent report.

This prospective energy workforce is concerned about job security as the industry moves forward in the energy transition, reports the Wall Street Journal. The number of students enrolled in petroleum engineering programs has decreased to its lowest point in a decade, the WSJ found, breaking the typical cycle, which "ebbed and flowed" alongside the price of oil.

This decline is estimated as a 75 percent drop in enrollment since 2014, Lloyd Heinze, a Texas Tech University professor, tells the WSJ. The article specifies that the University of Texas at Austin has seen a 42 percent decline since its peak enrollment in 2015, and Texas A&M University has dropped 63.3 percent. Both schools' petroleum engineering programs are ranked No. 1 and No. 2, respectively, by U.S. News and World Report. Texas Tech, which ties with the University of Houston at No. 9 on the U.S. News report, has seen a 88.1 percent decline since its peak in 2015. UH data wasn't included in the article.

The article highlights declines at Colorado School of Mines (87.7 percent), Louisiana State University (89 percent), and University of Oklahoma (90 percent) since their peak enrollment in 2015.

A decline in future workforce for the energy industry would directly affect Houston's economy. According to the 2023 Houston Facts report from the Greater Houston Partnership, Houston held 23.8 percent of the nation’s jobs in oil and gas extraction (33,400 of 140,200) 17.0 percent of jobs in oil field services (33,600 of 198,100), and 9.6 percent of jobs in manufacturing of agricultural, construction and mining equipment (20,400 of 212,000), based on data from the U.S. Bureau of Labor Statistics.

Barbara Burger tells the WSJ that new climatetech-focused startups have emerged and become more attractive to both college graduates and current oil and gas workforce. “There’s competition in a way that probably wasn’t there 15 years ago,” she shares.

The lack of college student pipeline paired with the diminishing workforce from emerging companies poses a challenge to incubant energy corporations, many of which have invested in programs at schools to better attract college graduates. The WSJ article points to BP's $4 million fellowship program with U.S. universities announced in February.

Just this week, Baker Hughes granted $100,000 to the University of Houston's Energy Transition Institute, which was founded last year with backing from Shell. In a recent interview with EnergyCapital, Joseph Powell, founding director of UH Energy Transition Institute, explains how the institute was founded to better engage with college students and bring them into the transitioning industry.

"It takes a lot of energy to process chemicals, plastics, and materials in a circular manner," he says. "Developing that workforce of the future means we need the students who want to engage in these efforts and making sure that those opportunities are available across the board to people of all different economic backgrounds in terms of participating in what is going to be just a tremendous growth engine for the future in terms of jobs and opportunities."

Clean energy jobs are already in Texas, and are ripe for the taking, according to a recent SmartAsset report that found that 2.23 percent of workers in the Houston area hold down jobs classified as “green.” While oil and gas positions are still paying top dollar, these clean energy jobs reportedly pay an average of 21 percent more than other jobs.

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CERAWeek 2026 to bring energy leaders to Houston to discuss tech and geopolitics

where to be

CERAWeek returns this month, March 23-27, and will once again bring leading energy executives and government officials to Houston.

The 44th annual event will again host U.S. Secretary of Energy Chris Wright and U.S. Secretary of the Interior Doug Burgum.

Wright will participate in a plenary session focused on energy policy with Daniel Yergin, conference chair and vice chairman of S&P Global, on March 23. The following day, he will be featured in the Celebrating 10 Years of U.S. LNG reception with Jack Fusso, president and CEO, of Cheniere Energy. Both events are part of the Executive Conference track.

Burgum will participate in a leadership dialogue plenary session with Yergin on March 25. It is also part of the Executive Conference track. Burgum is also chairman of the National Energy Dominance Council, established by President Trump in 2025.

Top energy executives, many of whom are based in Houston, will also be featured prominently at the week-long event. Other speakers include:

Bill Blevins, director of grid coordination for the Electric Reliability Council of Texas (ERCOT)
Trevor Best, CEO of Syzygy Plasmonics
Marie Contour Carrere, executive director of the Rice Sustainability Institute
Ryan DuChanois, co-founder and CEO of Solidec
Reginald DesRoches, president of Rice University
Georgina Campbell Flatter, CEO of Greentown Labs
Jim Fitterling, chair and CEO of Dow Inc.
Vicki Hollub, CEO of Occidental Petroleum Corp.
Renu Katon, chancellor and president of the University of Houston
Ryan Lance, chairman and CEO of ConocoPhillips
Olivier Le Peuch, CEO of SLB
Patrick Pouyanné, chairman and CEO of TotalEnergies SE
Adrian Tromel, chief innovation officer and interim VP for Innovation at Rice University
Bobby Tudor, founder and CEO of Artemis Energy Partners and chairman of HETI
Wael Sawan, CEO of Shell plc
Lorenzo Simonelli, chairman and CEO of Baker Hughes Co.
Mike Wirth, chairman and CEO of Chevron Corp.
Jeremy Pitts, managing director of Activate Houston
And many others

This year, CERAWeek will center around the theme of Convergence and Competition: Energy, Technology and Geopolitics.

"Change is inescapable," Yergin said in a news release. "The global energy landscape—and to a large extent the entire global economy—is being fundamentally reshaped by the dual forces of convergence and competition. The race for AI is fusing the energy and technology industries like never before, bringing into sharp relief the need to align energy expansion with sustainable economic growth."

"Yet, the potential for collaboration and innovation is increasingly matched by the risk for collision and conflict in a world marked by geopolitical rivalry, tariffs and fragmented supply chains," he continued. "Reconciling an increasingly complex world with the growing demand for energy that is stable, secure and affordable is a complex reality that CERAWeek 2026 will tackle when global energy leaders meet in Houston."

Key topics of discussion will include:

Politics, Economics, Trade and Supply Chains
Policy, Regulations and Stakeholders
Oil Value Chain
Power, Renewables, Generation and Grid
AI and Digital
Minerals and Mining
Electrification Technologies
Investment and Financing
Chemicals and Materials
Business Strategies
The Innovation Ecosystem
Managing Emissions
Low-Carbon Fuels and Mobility
Climate and Sustainability
Workforce Strategy

The CERAWeek Innovation Agora track, which is the program's deeper dive into technology and innovation, will feature thought leadership on "AI, decarbonization, low carbon fuels, cybersecurity, hydrogen, nuclear, mining and minerals, mobility, automation and more," according to the release.

Agora Hubs will return this year and be divided into three zones: new energies, carbon and climate, and AI. The hubs will feature amphitheater-style sessions and panels. Agora Pods will allow energy startups to showcase their ideas in 20- to 30-minute presentations.

Additionally, CERAWeek will introduce a new program this year on Friday, March 27. Known as Look Forward, it will focus on economics, politics and technology.

See the full agenda for the week here. Find more information and register for the event here.

Houston team unveils model to manage e-waste and more news to know

Trending News

Editor's note: The top energy transition news for March includes the "missing link" in scaling e-waste recycling and Houston's future as a leader in CCUS. Plus, we preview the teams pitching at the Energy Venture Day competition during CERAWeek. Here are the five most-read EnergyCapitalHTX stories from March 1-15:

1. Houston researchers propose model to scale e-waste recycling

Jian Shi, Chuyue Wang and Kailai Wang have developed a model that aims to make recycling e-waste economically viable and help recover critical minerals needed for EVs. Photo courtesy UH.

The “missing link” in critical minerals may have been in our junk drawers all along, according to new research from the University of Houston. Jian Shi, an associate professor in the UH Cullen College of Engineering, and his team have unveiled a new supply chain model that aims to make e-waste economically viable and could help make large-scale recycling possible. Continue reading.

2. Houston positioned to lead in Carbon Capture Utilization (CCU), study shows

Jane Stricker reflects on four years at HETI. Courtesy photo

With global demand for energy production while lowering emissions continues to grow, Houston and the Gulf Coast region are uniquely positioned to lead with carbon capture, utilization and sequestration (CCUS). A new study developed by the Houston Energy Transition Initiative (HETI) in collaboration with Deloitte Consulting explores how the region can transform captured CO₂ into valuable products while supporting continued economic growth and industrial competitiveness. Continue reading.

3. Houston cleantech startup seeks $200M for superhot geothermal plant

Houston cleantech startup seeks $200M for superhot geothermal plant

Quaise Energy is developing Project Obsidian, a superhot geothermal plant in central Oregon. Rendering via quaise.com.

Houston-based Quaise Energy is looking to raise $200 million to support the development of a 50-megawatt superhot geothermal plant in Oregon. The company is seeking $100 million in Series B funding, plus an additional $100 million from grants, debt and project-level finance, a representative from the company tells EnergyCapital. Continue reading.

4. 40+ teams to pitch at annual CERAWeek clean energy competition

40+ teams to pitch at annual CERAWeek clean energy competition

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.

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. Continue reading.

5. Texas data center boom could strain water supply, new report warns

A new report shows that Texas data centers used 25 billion gallons of water in 2025. Photo via HARC report.

As data centers continue to boom throughout Texas, a new report from the Houston Advanced Research Center (HARC) warns that the trend could strain the state’s water supply. HARC estimates Texas data centers used 25 billion gallons of water in 2025—and that the demand for water will continue to rise to meet the needs of the 464 data centers currently in Texas, as well as 70 additional sites currently under development. Continue reading.

Italian clean energy co. selects The Woodlands for North American HQ

new HQ

An Italian renewable energy company has picked The Woodlands for its North American headquarters.

AB Energy USA will occupy about 11,000 square feet in The Woodlands Towers at The Waterway. The company expects to add about 45 jobs in The Woodlands this year. Beginning in 2027, AB Energy USA will add another 30 jobs over a five-year period.

The new headquarters will be the corporate and governance hub for all of AB Energy’s North American subsidiaries. AB Energy, an arm of Italy-based AB, supplies renewable natural gas systems for industrial, commercial and data center customers. AB has operated in the U.S. since 2014.

“Establishing our North American headquarters in the Energy Capital of the World is a strategic step in AB’s long-term commitment to the U.S. market,” Paolo Ruggeri, North American CEO for AB Energy USA, said in a news release. “Houston gives us access to world-class engineering and energy talent, and strengthens our ability to attract and grow a high-performing team.”

Jevon Gibb, CEO of The Woodlands Area Economic Development Partnership, said several markets competed for AB Energy’s North American headquarters.

“AB’s decision to establish its North American headquarters here demonstrates The Woodlands’ competitiveness for both international companies and energy sector leaders,” Gibb said.

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