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Greentown Labs adds 6 Texas clean energy startups to Houston incubator

green team

Six companies have joined Greentown Houston, focused on long-duration energy storage systems, 3D solar towers and more. Photo courtesy Greentown Labs.

Greentown Labs announced the six startups to join its Houston community in Q2 of 2025.

The companies are among a group of 13 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 clean energy applications, from long-duration energy storage systems to 3D solar towers.

The new Houston members include:

  • Encore CO2, a Louisiana-based company that converts CO2 into ethanol, acetate, ethylene and other sustainable chemicals through its innovative electrolysis technology
  • Janta Power, a Dallas-based company with proprietary 3D-solar-tower technology that deploys solar power vertically rather than flatly, increasing power and energy generation
  • Licube, an Austin-based company focused on sustainable lithium recovery from underutilized sources using its proprietary and patented electrodialysis technology
  • Newfound Materials, a Houston-based company that has developed a predictive engine for materials R&D
  • Pix Force, a Houston-based company that develops AI algorithms to inspect substations, transmission lines and photovoltaic plants using drones
  • Wattsto Energy, a Houston-based manufacturer of a long-duration-energy-storage system with a unique hybrid design that provides fast, safe, sustainable and cost-effective energy storage at the microgrid and grid levels

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

Greentown Houston also added five startups to its local lab in Q1. Read more about the companies here.

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

Greentown Labs combines forces with MassChallenge to support more climate startups

strategic partnership

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.

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

Trending News

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.

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.

A mix of public and private investors have funded Greentown Labs. Photo via GreentownLabs.com

Investors from Houston and Boston fuel Greentown with $4M commitment

next era

Greentown Labs, a climatetech incubator with locations in the Houston and Boston areas, has announced it has received funding from a mix of investors.

The $4 million in funding came from both of the Houston and Massachusetts locations. Houston investors included Bobby Tudor, CEO of Artemis Energy Partners and chairman of the Houston Energy Transition Initiative; David Baldwin, co-founder of OpenMinds and TEX-E and partner at SCF Partners; and Rice University. Other investors included MassDevelopment and the City of Somerville.

“The challenges of the energy transition are immense, and the role played by technology incubators like Greentown Labs is essential,” Tudor says in a news release. “We believe this role, which is a partnership between academia, industry, philanthropists, entrepreneurs, and governments, is the best way to get to effective, scalable solutions in a time frame that the urgency of the challenge requires. We need all hands on deck, and this partnership between Massachusetts and Texas can be a role model for others.”

According to Greentown, the funding will support its financial position and contribute to preparing the incubator for its next chapter of supporting its its leadership team prepare for Greentown’s next chapter supporting and growing its 575 startups.

“Greentown’s mission aligns closely with the Houston Energy Transition Initiative’s goal of accelerating global solutions to address the dual challenge of meeting growing energy demand globally while also significantly reducing CO2 emissions,” adds Steve Kean, president and CEO of the Greater Houston Partnership.

With the announcement of the funding, Greentown named its board members, including Tudor, who will serve as Greentown Labs Board Chair. The other Houston-based board members are:

  • David Baldwin, co-founder of OpenMinds and TEX-E; partner atSCF Partners
  • Bob Harvey, former president and CEO of GHP; board member of TEX-E
  • Jane Stricker, senior vice president of energy transition and executive director of HETI

“With this new funding, Greentown is poised to expand its impact across its existing ecosystems and support even more climatetech startups,” adds Kevin Dutt, interim CEO of Greentown Labs. “We believe in the essential role entrepreneurship will play in the energy transition and we’re grateful for the support of our partners who share in that belief and our collective commitment to commercializing these technologies as quickly and efficiently as possible.”

According to Greentown, the incubator plans to announce its new CEO in the coming months.

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Hertha Metals breaks ground on $100M high-purity iron factory in Conroe

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Shortly after announcing a $133.65 Series A funding round, Conroe-based Hertha Metals broke ground Oct. 8 on a $100 million factory that will produce steel-grade and magnet-grade high-purity iron.

Hertha’s Chalyx plant, located in Conroe, will manufacture a total of about 10,000 metric tons per year of magnet-grade and steel-grade high-purity iron. The factory will use Hertha’s single-step process to generate high-purity iron for rare-earth-magnet and steel manufacturers in the U.S.

Hertha says Chalyx will be the first U.S. commercial plant for production of magnet-grade high-purity iron.

Chalyx is being built next to Hertha’s headquarters and its Pi100 pilot plant, which will remain in operation. Chalyx and Pi100 will form the first modern-day iron and steel “innovation complex” in the U.S., the company says.

“I founded Hertha Metals because I believed we could significantly improve how the world makes iron and steel from ore, and that an industry so fundamental to our future still had enormous room for invention,” Laureen Meroueh, founder and CEO of Hertha, said in a press release.

The 4-year-old startup says the Chalyx complex will lay the foundation for its first 500,000-ton-per-year steel mill.

Chalyx’s first priority is making high-purity iron for U.S. manufacturers of rare-earth magnets, Hertha says. These magnets are critical components for electric vehicles, data centers, wind turbines and defense systems.

China produces an estimated 94 percent of high-purity iron for rare-earth magnets, according to Hertha.

Aside from iron for rare-earth magnets, Chalyx will make iron and steel for pilot projects in the steel industry.

The plant is expected to come online in late 2027, with production of magnet-grade high-purity iron starting in early 2028.

Today, Hertha employs 32 people, the company says. Once it’s fully operating, the Chalyx plant will employ about 50 people.

Just ahead of the groundbreaking, Hertha announced the $133.65 million Series A round, co-led by Khosla Ventures and Doerr Capital. The round included a $65 million equity investment from the Pentagon.

“Iron and steel have shaped human progress for thousands of years. And I believe there is still an enormous amount left to invent,” Meroueh said at the groundbreaking ceremony.

Canada-founded energy tech company moves global HQ to Energy Corridor

houston hq

Pulsed-power technology company BlueSpark Energy will open its new global headquarters in Houston’s Energy Corridor to house its engineering, research and development, manufacturing, commercial and digital teams.

“Houston isn’t simply our new headquarters; it’s where a new BlueSpark begins,” Kahina Abdeli-Galinier, president and CEO of BlueSpark, said in a news release. ”We’re building the well health technology the industry needs to get more from existing wells, reduce intervention costs and keep wells producing for longer. Our new home brings us closer to our customers and places us at the heart of one of the most exciting markets in the industry, with the talent pool to match.”

The company, which began in Calgary, plans to grow its Houston workforce to 100 employees by the end of 2028, while the manufacturing element is expected to be operational in February 2027.

According to BlueSpark, the new facility will feature double the manufacturing floorspace of its current site, and the extra space will allow it to scale its tool manufacturing.

The headquarters is on West Sam Houston Parkway. BlueSpark's Chief Technology Officer Matt Mohajer and Chief Commercial Officer Zach Wilbur are already leading teams at the new space, according to the release.

BlueSpark develops pulsed-power technology that uses electrical energy to clean oil and gas well components, remove scale buildup and restore production without damaging equipment. Its technology helps operators reduce downtime, improve well performance and extend the productive life of existing wells.

Late last year, the company named Kahina Abdeli-Galinier as its CEO. It has since rebranded and focused on expanding its technology into new applications, including plugging and abandonment, cement removal and water services.

“We’re investing heavily in our technology, both the physics and the intelligence and delivery layer around it,” Abdeli-Galinier added in the release. “Having our engineering, manufacturing, digital, R&D and commercial teams in one place allows us to move much faster, giving our customers the tools they need to keep wells healthy and producing more for longer.”

Houston energy startups named finalists for 2026 Innovation Awards

Meet the Innovators

InnovationMap.com, EnergyCaptialHTX's sister website, has revealed the finalists for the 2026 Houston Innovation Awards, and the local energy sector is well-represented throughout the awards.

The sixth annual Houston Innovation Awards program returns in an all-digital format this fall to honor the best of Houston's innovation ecosystem, including startups, entrepreneurs, mentors, and more.

Finalists were determined by an esteemed panel of judges. The panel reviewed applications across 10 prestigious categories to determine our finalists. They will select the winner for each category, except for Startup of the Year, which will be chosen by the public via online voting launching later this month.

We will announce the honoree of our annual Trailblazer Award in the coming weeks, then stay tuned as we unveil all of this year's winners on InnovationMap.com in mid-November.

Without further ado, here are the 2026 Houston Innovation Awards finalists:

Minority-founded Business

Honoring an innovative startup founded or co-founded by BIPOC or LGBTQ+ representation:

  • AI Made Fun
  • Deep Anchor Solutions
  • HEXAspec
  • Prana Surgical
  • Torres Orbital Mining Inc.

Female-founded Business

Honoring an innovative startup founded or co-founded by a woman:

  • Adair
  • ARIX Technologies
  • Bairitone Health
  • FlowCellutions
  • ParaDocs Health

Energy Transition Business

Honoring an innovative startup providing a solution within renewables, climatetech, clean energy, alternative materials, circular economy and beyond:

  • Capwell Services
  • FlowCellutions
  • Hertha Metals
  • Mars Materials
  • Solidec

Health Tech Business

Honoring an innovative startup within the health and medical technology sectors:

  • Bairitone Health
  • InformAI Inc.
  • Prana Surgical
  • Skybound MedTech

Deep Tech Business

Honoring an innovative startup providing technology solutions based on substantial scientific or engineering challenges, including those in the AI, robotics and space sectors:

  • Casimir
  • Focis AI
  • Machine Saver Inc.
  • Square Robot
  • Venus Aerospace

Startup of the Year (People's Choice)

Honoring a startup celebrating a recent milestone or success. The winner will be selected by the community via an online voting experience:

  • Fluxworks
  • IronLattice
  • Lumino
  • Progress Report
  • Rosarium Health
  • Thread
  • TokenRoster

Scaleup of the Year

Honoring an innovative later-stage startup that's recently reached a significant milestone in company growth:

  • Erock
  • Hertha Metals
  • Venus Aerospace

Incubator/Accelerator of the Year

Honoring a local incubator or accelerator that is championing and fueling the growth of Houston startups:

  • Activate
  • Impact Hub Houston
  • MarMo Innovation

Mentor of the Year

Honoring an individual who dedicates their time and expertise to guide and support budding entrepreneurs:

  • Al Danto, Rice University
  • Eric Rubenstein, New Climate Ventures
  • Jeremy Pitts, Activate
  • Joe Alapat, Liongard
  • Kyle Judah, Rice University's Liu Idea Lab for Innovation & Entrepreneurship
  • Rachel Bickham, Bickham Services Unlimited LLC

Trailblazer Recipient

  • To be announced
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