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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Houston's GoodPeak is breaking ground on its first energy storage projects. Photo via Getty Images.

New $22M ERCOT energy storage project and more trending news to know

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Editor's note: We're looking back at the top energy transition news for the first part of April 2025, including tapping into AI to boost grid reliability, new ERCOT energy storage projects, Greentown Labs' newest members, and more. Read on for the five most-read EnergyCapital stories from April 1-10.

CenterPoint partners with AI and infrastructure companies to boost reliability

CenterPoint has partnered with Atlanta-based Osmose and Australia-based Neara to use AI-powered predictive modeling to inform decisions on restorations and risk. Photo via Getty Images

Houston utilities giant CenterPoint is partnering with companies from Atlanta and Australia to use AI to increase data accuracy and strengthen the power grid. The partnership is part of a collaboration between AI-powered predictive modeling platform company Neara and utility infrastructure asset assessment solutions company Osmose. Continue reading.

Houston startup secures $22 million for ERCOT energy storage projects

Houston's GoodPeak is breaking ground on its first energy storage projects. Photo via Getty Images.

Houston-based GoodPeak has nailed down $22 million in construction debt financing to help build its first two 10-megawatt battery energy storage projects, both of which are expected to come online in the Houston area at the end of 2025. GoodPeak secured the debt financing from financial services company Pathward and renewable energy lender BridgePeak Energy Capital.

GoodPeak says an undisclosed amount of funding from private equity firm Current Equity Partners and other investors will further spur growth. That growth starts with the construction of the two Houston-area battery energy storage projects, which will serve the Electric Reliability Council of Texas (ERCOT), whose power grid serves most of the state.Continue reading.

Houston Energy and Climate Startup Week announces 2025 dates, key events

Houston Energy and Climate Startup Week is coming back for a second year. Photo via GHP

Six local organizations focused on the energy transition have teamed up to bring back Houston Energy and Climate Startup Week. The second annual event will take place Sept. 15-19. The Ion District will host many of the week's events.

Houston Energy and Climate Startup Week was founded in 2024 by Rice Alliance for Technology and Entrepreneurship, Halliburton Labs, Greentown Labs, Houston Energy Transition Initiative (HETI), Digital Wildcatters and Activate. Continue reading.

Greentown Labs announces newest startups to join Houston climatetech incubator

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 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. Continue reading.

Houston geothermal company closes $13M in investments to fuel growth

XGS Energy plans to “aggressively expand” its team in Houston this year thanks to its latest round of investments. Photo via Getty Images

XGS Energy, a California-headquartered geothermal power company with a major presence in Houston, has closed $13 million in new financing that included new investors Aligned Climate Capital, ClearSky, ClimateIC and WovenEarth Ventures, in addition to inside investors. The company plans to “aggressively expand” its team in Houston this year. Continue reading.

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.

Houston Energy and Climate Startup Week is coming back for a second year. Photo via GHP

Houston Energy and Climate Startup Week announces 2025 dates, key events

comeback tour

Six local organizations focused on the energy transition have teamed up to bring back Houston Energy and Climate Startup Week.

The second annual event will take place Sept. 15-19, according to an announcement. The Ion District will host many of the week's events.

“Houston Energy and Climate Startup Week was created to answer a fundamental question: Can we achieve more by working together than we can alone?” Jane Stricker, senior vice president at the Greater Houston Partnership and executive director of HETI, said in the release.

So far, events for the 2025 Houston Energy and Climate Startup Week include an introduction to climatetech accelerator Activate's latest cohort, the Rice Alliance Energy Tech Venture Forum, a showcase from Greentown Labs' ACCEL cohort, and Halliburton Labs Pitch Day.

Houston organizations New Climate Ventures and Digital Wildcatters, along with Global Corporate Venturing, are slated to offer programming again in 2025. And new partners, Avatar Innovations and Decarbonization Partners, are slated to introduce events. Find a full schedule here.

Other organizations can begin entering calendar submissions starting in May, according to the release.

Last year, Houston Energy and Climate Startup Week welcomed more than 2,000 attendees, investors and industry leaders to more than 30 events. It featured more than 100 speakers and showcased more than 125 startups.

"In 2024, we set out to build something with lasting impact—rooted in the ingenuity of Houston’s technologists and founders. Thanks to a collaborative effort across industry, academia, and startups, we’ve only just begun to showcase Houston’s strengths and invite others to be part of this movement," Stricker added in the release. "We can’t wait to see the city rise to the occasion again in 2025.”

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.

Georgina Campbell Flatter worked closely with Greentown Labs when it was founded in 2011 and now will lead the incubator as CEO. Photo courtesy Greentown Labs

Greentown Labs names new CEO to lead climate tech incubator

new hire

Houston and Boston climate tech incubator Greentown Labs has named Georgina Campbell Flatter as the organization’s incoming CEO.

Flatter will transition to Greentown from her role as co-founder and executive director of TomorrowNow.org, a global nonprofit that studies and connects next-generation weather and climate technologies with communities most affected by climate change.

“We are at a transformational moment in the energy transition, with an unprecedented opportunity to drive solutions in energy production, sustainability, and climate resilience,” Flatter said in a news release. “Greentown Labs is, and has always been, a home for entrepreneurs and a powerhouse of collaboration and innovation.”

Previously, Flatter worked to launch TomorrowNow out of tomorrow.io, a Boston-based AI-powered weather intelligence and satellite technology company. The organization secured millions in climate philanthropy from partners, including the Gates Foundation, which helped deliver cutting-edge climate solutions to millions of African farmers weekly.

Flatter also spent 10 years at the Massachusetts Institute of Technology (MIT), where she was a senior lecturer and led global initiatives at the intersection of technology and social impact. Her research work includes time at Langer Lab and Sun Catalytix, an MIT – ARPA-E-funded spin-out that focused on energy storage solutions inspired by natural photosynthesis. Flatter is also an Acumen Rockefeller Global Food Systems Fellow and was closely involved with Greentown Labs when it was founded in Boston in 2011, according to the release.

“It’s rare to find an individual who has impressive climate and energy expertise along with nonprofit and entrepreneurial leadership—we’re fortunate Georgie brings all of this and more to Greentown Labs,” Bobby Tudor, Greentown Labs Board Chair and Chairman of the Houston Energy Transition Initiative, said in a news release.

Flatter will collaborate with Kevin Dutt, Greentown’s Interim CEO, and also continue to serve on Greentown’s Board of Directors, which was recently announced in December and contributed to a successful $4 million funding round. She’s also slated to speak at CERAWeek next month.

“In this next chapter, I’m excited to build on our entrepreneurial roots and the strength of our ever-growing communities in Boston and Houston,” Flatter added in a news release. “Together, we will unite entrepreneurs, partners, and resources to tackle frontier challenges and scale breakthrough technologies.”

Greentown also named Naheed Malik its new chief financial officer last month. The announcements come after Greentown’s former CEO and president, Kevin Knobloch, announced that he would step down in July 2024 after less than a year in the role.

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18 Houston-based energy companies land on Forbes Global 2000 list

Forbes 2000

More than 60 Texas-based companies appear on Forbes’ 2025 list of the world’s 2,000 biggest publicly traded companies, and nearly half come from Houston, the majority in the energy sector.

Among Texas companies whose stock is publicly traded, Spring-based ExxonMobil is the highest ranked at No. 13 globally.

Rounding out Texas’ top five are Houston-based Chevron (No. 30), Dallas-based AT&T (No. 35), Austin-based Oracle (No. 66), and Austin-based Tesla (No. 69).

Ranking first in the world is New York City-based J.P. Morgan Chase.

Forbes compiled this year’s Global 2000 list using data from FactSet Research to analyze the biggest public companies based on four metrics: sales, profit, assets, and market value.

“The annual Forbes Global 2000 list features the companies shaping today’s global markets and moving them worldwide,” said Hank Tucker, a staff writer at Forbes. “This year’s list showcases how despite a complex geopolitical landscape, globalization has continued to fuel decades of economic growth, with the world’s largest companies more than tripling in size across multiple measures in the past 20 years.”

The U.S. topped the list with 612 companies, followed by China with 317 and Japan with 180.

Here are the rest of the Texas-based companies in the Forbes 2000, grouped by the location of their headquarters and followed by their global ranking.

Houston area (those in the energy sector are in bold)

ConocoPhillips (No. 105)
Phillips 66 (No. 276)
SLB (No. 296)
EOG Resources (No. 297)
Occidental Petroleum (No. 302)
Waste Management (No. 351)
Kinder Morgan (No. 370)
Hewlett Packard Enterprise (No. 379)
Baker Hughes (No. 403)
Cheniere Energy (No. 415)
Corebridge Financial (No. 424)
Sysco (No. 448)
Halliburton (No. 641)
Targa Resources (No. 651)
NRG Energy (No. 667)
Quanta Services (No. 722)
CenterPoint Energy (No. 783)
Coterra Energy (No. 1,138)
Crown Castle International (No. 1,146)
Westlake Corp. (No. 1,199)
APA Corp. (No. 1,467)
Comfort Systems USA (No. 1,629)
Group 1 Automotive (No. 1,653)
Talen Energy (No. 1,854)
Prosperity Bancshares (No. 1,855)
NOV (No. 1,980)

Austin area

Dell Technologies (No. 183)
Flex (No. 887)
Digital Realty Trust (No. 1,063)
CrowdStrike (No. 1,490)

Dallas-Fort Worth

Caterpillar (No. 118)
Charles Schwab (No. 124)
McKesson (No. 195)
D.R. Horton (No. 365)
Texas Instruments (No. 374)
Vistra Energy (No. 437)
CBRE (No. 582)
Kimberly-Clark (No. 639)
Tenet Healthcare (No. 691)
American Airlines (No. 834)
Southwest Airlines (No. 844)
Atmos Energy (No. 1,025)
Builders FirstSource (No. 1,039)
Copart (No. 1,062)
Fluor (No. 1,153)
Jacobs Solutions (1,232)
Globe Life (1,285)
AECOM (No. 1,371)
Lennox International (No. 1,486)
HF Sinclair (No. 1,532)
Invitation Homes (No. 1,603)
Celanese (No. 1,845)
Tyler Technologies (No. 1,942)

San Antonio

Valero Energy (No. 397)
Cullen/Frost Bankers (No. 1,560)

Midland

Diamondback Energy (No. 471)
Permian Resources (No. 1,762)

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A version of this article originally appeared on CultureMap.com.

Hydrogen Technology Expo expected to bring largest event yet to NRG Center

where to be

The Hydrogen Technology Expo North America returns to NRG Center this month, June 25-26, and is slated to be the largest yet with an expected 10,000 attendees, 500 exhibitors, 200 speakers and more than 100 hours of content.

The 2025 event will feature cutting-edge technologies, interactive panel discussions and networking opportunities while targeting industries looking to adopt hydrogen and fuel cell technology to help decarbonize their sectors. The event will be co-located with the Carbon Capture Technology Expo North America.

The 2025 expo will introduce the new Ammonia Zone, a dedicated area fostering collaboration with industries leveraging ammonia as a key component in the hydrogen economy. It will also offer one- and two-day passes for the first time.

The expo is divided into five tracks:

Strategic forum
Hydrogen and alternative fuel production
Infrastructure and integration
Mobility and propulsion systems
Carbon capture, utilization and storage

Speakers include Martin Perez, former associate director for carbon capture at the office of clean energy demonstrations for the U.S. Department of Energy; Frank Wolak, president and CEO of Fuel Cell and Hydrogen Energy Association; Seema Santhakumar, hydrogen market development leader –Americas at Baker Hughes; Rich Byrnes, chief infrastructure officer for Port Houston; and many others. A full list of exhibitors can be found here.

Technologies on display will include storage systems, industrial plant technologies, liquefaction technologies, advanced materials and composites, gasification technology, simulation and evaluation, safety systems, hydrogen fuels, hydrogen injectors, line assemblies, fuel-cell control units and more.

“The Hydrogen Technology Expo offers industry leaders a valuable opportunity to network and stay informed about the latest developments in the rapidly evolving world of hydrogen,” Susan Shifflett, Executive Director at Texas Hydrogen Alliance, said. “We’re a proud partner of the show.”

Entry to the exhibition hall is free of charge. Passes start at $450. Find more information about how to register here.

CenterPoint reaches agreement on SRP to significantly reduce outages

grid resilience

CenterPoint Energy has reached a settlement agreement with parties to its 2026-2028 Systemwide Resiliency Plan (SRP), which will represent the largest single grid resiliency investment in CenterPoint's history.

The plan is expected to reduce storm-related outages by 1 billion minutes for its 2.8 million customers by 2029 and build on the first two phases of the company's Greater Houston Resiliency Initiative (GHRI), according to a release from CenterPoint.

This SRP is designed to further address the impacts of extreme weather threats. The deal, which is subject to Public Utility Commission of Texas (PUCT) review and approval, reflects discussions with intervening parties following the filing of CenterPoint's enhanced SRP with the PUCT in January 2025.

“Our plan is cost-effective and will build on the progress we've made to date through the Greater Houston Resiliency Initiative,” Jason Wells, president and CEO of CenterPoint, said in a news release. “We believe that these resiliency actions will help create a future with fewer outages that impact smaller clusters of customers, coupled with faster restoration times for our Greater Houston communities.”

Included in the SRP is a revised, agreed-upon investment of more than $3 billion in CenterPoint's electric distribution system, and also includes the deferment of more than $240 million in SRP costs until the second half of 2029, which will spread the costs out for customers over a four-year period. All SRP work will be completed in the proposed 2026-2028 timeframe, once approved.

The plan will target high-risk areas. Key initiatives include:

Distributing 130,000 stronger storm-resilient poles
Clearing 100 percent of power lines of hazardous vegetation every three years
Undergrounding more than 50 percent of CenterPoint's system
Modernizing 20,150 spans of underground cables
Automating lines serving the most customers to make them capable of “self-healing”

CenterPoint also announced it will continue its nearly $2 billion investment planned for the electric transmission system, which includes rebuilding or upgrading 2,200 structures to help withstand extreme weather.

The SRP investment in the electric distribution system would add $1.40 per month for an average residential customer each year from 2026 through 2028, with a final $0.60 per month added in 2030, according to the news release.

“This is another major step on our strategic roadmap to building and operating the most resilient coastal grid in the nation,” Wells said in the release.

In preparation for filing the SRP, CenterPoint ran 30 community meetings, listening sessions and solicited feedback on the plan during the draft stages.

In April, CenterPoint began building a network of 100 new weather monitoring stations, which will provide 24/7 weather monitoring and storm response preparation, and in June began installing 100 new local weather monitoring stations as part of the GHRI Phase 2. Also in April, CenterPoint began a collaboration between AI-powered predictive modeling platform company Neara and utility infrastructure asset assessment solutions company Osmose.

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