Twelve local startups have joined Greentown Houston, along with others from around the world. Photo courtesy Greentown Labs.

More than 40 climatetech startups joined the Greentown Labs Houston community in the second half of 2025. Twelve hail from the Bayou City.

The companies are among a group of nearly 70 that joined the climatetech incubator, which is co-located in Houston and Boston, in Q3 and Q4.

The new companies that have joined the Houston incubator specialize in a variety of clean energy applications, from green hydrogen-producing water-splitting cycles to drones that service wind turbines.

The local startups that joined Greentown Houston include:

  • Houston-based Wise Energie, which delivers turnkey microgrids that blend vertical-axis wind, solar PV, and battery storage into a single, silent system.
  • The Woodlands-based Resollant, which is developing compact, zero-emissions hydrogen and carbon reactors to provide low-cost, scalable clean hydrogen and high-purity carbon for the energy and manufacturing sectors.
  • Houston-based ClarityCastle, which designs and manufactures modular, soundproof work pods that replace traditional drywall construction with reusable, low-waste alternatives made from recycled materials.
  • Houston-based WattSto Energy, which manufactures vanadium redox flow batteries to deliver long-duration storage for both grid-scale projects and off-grid microgrids.
  • Houston-based AMPeers, which delivers advanced, high-temperature superconductors in the U.S. at a fraction of traditional costs.
  • Houston-based Biosimo, which is developing bio-based platform chemicals, pioneering sustainable chemistry for a healthier planet and economy.
  • Houston-based Ententia, which offers purpose-built, generative AI for industry.
  • Houston-based GeoKiln Energy Innovation, which is developing a new way to produce clean hydrogen by accelerating natural geologic reactions in iron-rich rock formations using precision electrical heating.
  • Houston-based Timbergrove, which builds AI and IoT solutions that connect and optimize assets—boosting visibility, safety, and efficiency.
  • Houston-based dataVediK, which combines energy-domain expertise with advanced machine learning and intelligent automation to empower organizations to achieve operational excellence and accelerate their sustainability goals.
  • Houston-based Resonant Thermal Systems, which uses a resonant energy-transfer (RET) system to extract critical minerals from industrial and natural brines without using membranes or grid electricity.
  • Houston-based Torres Orbital Mining (TOM),which develops autonomous excavation systems for extreme environments on Earth and the moon, enabling safe, data-driven resource recovery and laying the groundwork for sustainable off-world industry.

Other startups from around the world joined the Houston incubator in the same time period, including:

More than 100 startups joined Greentown this year, according to an end-of-year reflection shared by Greentown CEO Georgina Campbell Flatter.

Flatter joined Greentown in the top leadership role in February 2025. She succeeded former CEO and president Kevin Knobloch, who stepped down in July 2024.

"I moved back to the United States in March 2025 after six years overseas—2,000 miles, three children, and one very patient husband later. Over these months, I’ve had the chance to hear from the entrepreneurs, industry leaders, investors, and partners who make this community thrive. What I’ve experienced has left me brimming with urgent optimism for the future we’re building together," she said in the release.

According to Flatter, Greentown alumni raised more than $2 billion this year and created more than 3,000 jobs.

"Greentown startups and ecosystem leaders—from Boston, Houston, and beyond—are showing that we can move further and faster together. That we don’t have to choose between more energy or lower emissions, or between increasing sustainability and boosting profit. I call this the power of 'and,'" Flatter added. "We’re working for energy and climate, innovation and scale, legacy industry and startups, prosperity for people and planet. The 'and' is where possibility expands."

The Carbon to Value Initiative has named its fifth cohort of global startups. Photo courtesy of Greentown Labs

Greentown and partners name 10 startups to carbontech accelerator

new cohort

The Carbon to Value Initiative (C2V Initiative)—a collaboration between Greentown Labs, NYU Tandon School of Engineering's Urban Future Lab and Fraunhofer USA—has announced 10 startup participants to join the fifth cohort of its carbontech accelerator.

The six-month accelerator aims to help cleantech startups advance their commercialization efforts through access to the C2V Initiative’s Carbontech Leadership Council (CLC). The invitation-only council consists of corporate and nonprofit leaders from organizations like Shell, TotalEnergies, XPRIZE, L’Oréal and others who “foster commercialization opportunities and identify avenues for technology validation, testing, and demonstration,” according to a release from Greentown

“The No. 1 reason startups engage with Greentown is to find customers, grow their businesses, and accelerate impact—and the Carbon to Value Initiative delivers exactly that,” Georgina Campbell Flatter, CEO of Greentown, said in a news release. “It’s a powerful example of how meaningful engagement between entrepreneurs and industry turns innovation into commercial traction.”

The C2V Initiative received more than 100 applications from 33 countries, representing a variety of carbontech innovations. The 10 startups chosen for the 2025 fifth cohort include:

  • Cambridge, Massachusetts-based Sora Fuel, which integrates direct-air capture with direct conversion of the captured carbon into syngas for production of sustainable aviation fuel
  • Brooklyn-based Arbon, which develops a humidity-swing carbon-capture solution by capturing CO₂ from the air or point-source without heat or pressure
  • New York-based Cella Mineral Storage, which works to develop subsurface mineralization technology with integrated software, enabling new ways to sequester CO2 underground
  • Germany-based ICODOS, which helps transform emissions into value through a point-source carbon capture and methanol synthesis process in a single, modularized system
  • Vancouver-based Lite-1, which uses advanced biomanufacturing processes to produce circular colourants for use in textiles, cosmetics and food
  • London-based Mission Zero Technologies, which has developed and deployed an electrified, direct-air carbon capture solution that employs both liquid-adsorption and electrochemical technologies
  • Kenya-based Octavia Carbon, which develops a solid-adsorption-based, direct-air carbon capture solution that utilizes geothermal heat
  • California-based Rushnu, which combines point-source carbon capture with chemical production, turning salt and CO2 into chlorine-based chemicals and minerals
  • Brooklyn-based Turnover Labs, which develops modular electrolyzers that transform raw, industrial CO2 emissions into chemical building blocks, without capture or purification
  • Ontario-based Universal Matter, which develops a Flash Joule Heating process that converts carbon waste such as end-of-life plastics, tires or industrial waste into graphene

The C2V Initiative is based on Greentown Go, Greentown’s open-innovation program. The C2V Initiative has supported 35 startups that have raised over $600 million in follow-on funding.

Read about the 2024 cohort here.
Hear startup pitches, panels and fireside chats from energy transition leaders next week. Photo via Greentown Labs

What to expect from the 2025 Greentown Labs' Climatetech Summit Houston

where to be

Greentown Labs' Climatetech Summit Houston will take place next Tuesday, Nov. 4, bringing together philanthropists, executives and innovators in the energy transition space.

John Arnold, co-founder and co-chair of Arnold Ventures, will participate in the keynote fireside chat with Greentown CEO Georgina Campbell Flatter. The conversation will explore "top priorities and opportunities in energy innovation today—with a special focus on how these dynamics are playing out in Houston," according to Greentown.

Other highlights will include:

  • Welcome remarks from Houston Mayor John Whitmire
  • A course led by TEX-E Executive Director Sandy Guitar
  • A philanthropy panel featuring Greentown Labs new Head of Philanthropy Stacey Harris
  • The Energy Jobs of the Future, featuring Sameer Bandhu, GE Vernova’s managing director, ventures and licensing
  • An Energy-transition Roadmap, featuring Monica Krishnan, Hermann Lebit and Bobby Tudor and moderated by Varun Rai
  • What is Climatetech? featuring Kyle Judah, Emerson Denka Wangdi, Laureen Meroueh and Head of Greentown Houston Lawson Gow

Ten Greentown Labs startups will also present their pitches at the event. Expect to hear from:

  • MCatalysis Inc. CEO, President, and Founder Michael D. Irwin. Dallas-based MCatalysis develops novel, high-efficiency industrial microwave processes and catalysts to produce low-cost, clean synthetic fuels and chemicals from waste carbon resources.
  • Pike Robotics CEO and co-founder Connor Crawford. Austin-based Pike Robotics provides next-gen robotic solutions for in-service inspection of floating roof storage tanks.
  • Helix Earth CEO and co-founder Rawand Rasheed. Houston-based Helix Earth retrofits commercial HVAC systems to improve energy efficiency.
  • 10DQ CEO Steven Reece. Greentown Boston member 10DQ has developed its Redox Loop Battery, which uses novel, water-based electrolytes to store energy in dense, low-cost, earth-abundant battery materials.
  • Janta Power CEO Mohammed Njie. Dallas-based Janta Power is developing 3D solar towers.
  • Neuralix business operations and product developer Annorah Lewis. Houston-based Neuralix offers a suite of rapid, customizable templates for the data lifecycle for the energy and manufacturing sectors.
  • Ententia co-founder Nishant Shah. Houston-based Etenitia develops enterprise AI platforms and systems that use domain expertise, rich multi-modal industrial datasets, and generative AI technology to power more effective and efficient business workflows.
  • Locoal CEO Miles Murray. Boerne, Texas-based Locoal is a waste-to-energy company that has developed a proprietary mobile containerized fluidized gasifier that diverts waste, converts it to clean energy and captures carbon in value-added co-products.
  • SpiralWave co-founder Adam Amad. San Francisco-based SpiralWave has developed novel electrochemical carbon capture technology that lowers costs.
  • Biatech founder and CEO Nathan Hartwig. Tampa-based Biatech has built an application-layer AI platform to help energy, mining and infrastructure operators optimize asset performance, reduce risk and improve decision-making.

In addition to the startup pitches, attendees will also be able to meet founders and Greentown members during the afternoon startup showcase. A networking reception at Axelrad Houston follows. A separate ticket offers admission to the showcase and networking event only.

See the full agenda here.

Stacey Harris will join Greentown Labs at what it calls a "pivotal moment." Photo courtesy Greentown Labs.

Greentown Labs names first head of philanthropy

new hire

Greentown Labs has named its first-ever head of philanthropy in an "all hands on deck" move to advance philanthropic support for climatetech ventures.

Stacey Harris will join the clean energy incubator and brings more than 15 years of experience to the role, having led major partnerships at organizations like Make-A-Wish International, Movember, Net Impact and the Greater Phoenix Economic Council, according to a release from Greentown.

Harris will be based out of Greentown's Boston-area incubator but will support both its Texas and Massachusetts locations. Greentown maintains headquarters in Houston and Somerville, Massachusetts.

“Stacey brings national reach, local roots, and the entrepreneurial spirit we need,” Georgina Campbell Flatter, CEO of Greentown, said in the release. “She understands that philanthropy isn’t just about raising funds—it’s about building a movement, sustaining an ecosystem, and accelerating change together.”

In her new role, Harris will be tasked with designing and leading a philanthropic strategy that aligns with Greentown's corporate partnerships.

The incubator said in the release that Harris's hire is coming at a "pivotal moment," and the organization is "calling for all hands on deck" to support the clean energy space. "This includes inspiring states and local governments to lean in, individuals and family offices to step up, foundations to mobilize resources, and industry to invest boldly," the release states.

"Philanthropy has the unique power to accelerate innovation where it matters most—by backing the people and ideas that can change the world,” Harris added in the release. “At Greentown, I see an incredible opportunity to partner with local communities in Massachusetts and Texas, while also mobilizing catalytic funds that fuel entrepreneurs globally. I’m energized to work across donors, foundations, and industry to ensure these founders have what they need to go further, faster—together.”

Harris is the latest in a series of new hires for Greentown.

Lawson Gow, founder of The Cannon co-working space and former managing partner at Helium Capital, was named Greentown's Head of Houston in July. Flatter was also named as the organization's new CEO in February, after Naheed Malik was named its new CFO in January.

Lawson Gow, founder of The Cannon, will lead Greentown Houston. Photo courtesy Greentown Labs.

Greentown Labs names Lawson Gow as its new Houston leader

head of hou

Greentown Labs has named Lawson Gow as its Head of Houston.

Gow is the founder of The Cannon, a coworking space with seven locations in the Houston area, with additional partner spaces. He also recently served as managing partner at Houston-based investment and advisory firm Helium Capital. Gow is the son of David Gow, founder of Energy Capital's parent company, Gow Media.

According to Greentown, Gow will "enhance the founder experience, cultivate strategic partnerships, and accelerate climatetech solutions" in his new role.

“I couldn’t be more excited to join Greentown at this critical moment for the energy transition,” Gow said in a news release. “Greentown has a fantastic track record of supporting entrepreneurs in Houston, Boston, and beyond, and I am eager to keep advancing our mission in the energy transition capital of the world.”

Gow has also held analyst, strategy and advising roles since graduating from Rice University.

“We are thrilled to welcome Lawson to our leadership team,” Georgina Campbell Flatter, CEO of Greentown Labs, added in the release. “Lawson has spent his career building community and championing entrepreneurs, and we look forward to him deepening Greentown’s support of climate and energy startups as our Head of Houston.”

Gow is the latest addition to a series of new hires at Greentown Labs following a leadership shakeup.

Flatter was named as the organization's new CEO in February, replacing Kevin Dutt, Greentown’s interim CEO, who replaced Kevin Knobloch after he announced that he would step down in July 2024 after less than a year in the role.

Greentown also named Naheed Malik its new CFO in January.

Timmeko Moore Love was named the first Houston general manager and senior vice president of Greentown Labs. According to LinkedIn, she left the role in January.

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.

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Houston company tapped to run renewables project with Meta power agreement

power deal

Houston-based Consolidated Asset Management Services (CAMS) has been selected to operate Plano-based Nexus Renewable Power's major renewables development, known as Project Goody.

CAMS will provide comprehensive asset management, operations, maintenance, regulatory compliance and remote operations services for the $220 million solar and battery storage project located in Lamar County, Texas, northeast of Dallas.

“The project underscores CAMS’ commitment to supporting dependable, grid-strengthening energy infrastructure across the United States,” Brian Ivany, EVP of CAMS Renewables, said in a news release. “Our team is proud to support Nexus and excited to apply our subject matter expertise and hands-on approach to ensure operational excellence and long-term success of the Goody project.”

Project Goody, or MRG Goody Solar and Storage, will feature a 172-megawatt solar facility paired with 237 megawatts of battery energy storage. The project will be connected to the ERCOT grid. Meta, the parent company of Facebook, has signed on as the power offtaker for the project.

Nexus Renewable Power develops, finances and operates solar and energy storage assets. It currently operates projects generating 325 megawatts of solar and 350 megawatts of battery storage, with another 300 megawatts of solar and 1 gigawatt of battery storage projects under construction, according to its website. Project Goody is the first in a series of renewable developments underway, according to Nexus.

CAMS manages and operates energy infrastructure assets for its clients. Last year, it added InfraRed Capital Partners, which owns the 202-megawatt Mesteño Wind Project in the Rio Grande Valley, to its customer list. It also rolled out services to help deliver power to meet the growing demand from AI data centers.

Houston-area solar farm to move forward with $394M in construction financing

solar funding

Project SunRope, a 347-megawatt solar project outside of Houston, has landed $394 million in construction financing.

The project, located in Wharton County, about 60 miles outside of Houston, is slated to begin commercial operation in Q3 2027 and aims to support emission reductions, grid reliability and affordability in one of the highest electricity-demand regions in Texas and the U.S. It’s being developed through a joint venture between San Antonio-based OCI Energy and leading Israeli solar company Arava Power. New York-based ING Capital underwrote the financing package.

“The close of construction financing for Project SunRoper represents an important milestone for OCI Energy and our partners,” Sabah Bayatli, resident of OCI Energy, said in a news release. “This transaction reflects our continued commitment to deliver high-quality, utility-scale solar projects that strengthen grid reliability and provide affordable energy infrastructure.”

The construction financing is supported by a 20-year power purchase agreement with a Fortune 100 company, according to the release. Other collaborators include BHI and Bank of Hapoalim, which provided financing support and letters of credit to support the development of the project.

This is the second transaction between OCI Energy and ING, as they previously worked together on financing for the Alamo City Battery Energy Storage System, a 120-megawatt battery energy storage system under development in Bexar County.

“This project exemplifies the high‑quality renewable infrastructure we seek to finance – a strong sponsor partnership, a long‑term contracted revenue profile, and a well‑located asset in one of the most dynamic power markets in the United States,” Sven Wellock, managing director at ING, added in the release. “We are proud to build on our existing relationship with OCI Energy and to partner with Arava Power on its continued expansion in the U.S. market, advancing a project that will deliver reliable, affordable clean energy for years to come.”

OCI Energy operates several utility-scale solar and battery energy storage system projects outside of the San Antonio area, as well as in Georgia and New Jersey. It has five other projects under construction outside of San Antonio and Waco, with more than 20 under development throughout the state.

Energy expert reviews Texas' big strides in winter grid resilience

guest column

Many Houstonians were holding their breath during the hard freezes that occurred in late January. While Winter Storm Uri was five years ago, the massive blackouts remain a fresh memory.

During that storm, 4.5 million Texans lost power, the state suffered over $80 billion in economic losses, and more than 200 people lost their lives.

During the most recent freeze events, Texas did not experience large-scale blackouts across the state like those in 2021. Regional power outages occurred due to infrastructure issues, including ice on trees and power lines. Since Uri, we have not seen the same sustained weather conditions to test the grid, but there have been significant improvements.

What Has Changed Since Uri

The ERCOT grid has changed significantly since the storm in 2021:

  1. Senate Bill 3 required generators to winterize their equipment, treated the natural gas supply chain as critical infrastructure, and imposed fines of up to $1 million for falling short. More than 300 power units have already been weatherized, and regulators have issued clearer standards to help keep the grid running during extreme cold.
  2. There has been significant progress with monitoring the grid and preparing for emergencies. ERCOT has improved in spotting problems before they turn into outages. Operators now have stronger real-time visibility into generator performance and fuel supplies, improved coordination with natural gas providers, and more advanced forecasting tools that help predict energy availability.
  3. The Texas Energy Fund authorized more than $10 billion for reliability projects across the state. The funds support four programs that aim to increase energy generation and dispatch capacity during periods of grid strain.

Signs of Progress

The grid's performance from 2022 to 2026 shows measurable improvements in how the system handles extreme cold.

  • ERCOT has implemented conservation alerts to help reduce grid load and prevent major blackouts.
  • Operators monitor the reserve margin, essentially the buffer between supply and demand. When that cushion holds, the grid has more flexibility to keep power flowing.
  • Stronger coordination between generators, transmission operators and utilities is also improving overall system resilience.

Additionally, Texas has built one of the largest smart-meter networks in the country, enabling better predictive analysis of electricity demand and usage. These smart meters have been installed in 90% of Texas residential homes, providing a much more accurate picture of energy consumption.

Finally, energy companies are helping customers understand how small changes in usage can ease grid strain. Individually, those adjustments may seem minor, but across millions of homes, they can meaningfully lower demand and help reduce the risk of outages.

Remaining Vulnerabilities and Possible Risks

Despite the progress, Grid Strategies assigned the Texas power grid a D-minus rating this year. A major factor in the rating is Texas’s lack of connections to neighboring power grids. While the state earned a B for legislative engagement, delayed transmission projects contributed to a lower C-minus outcome score.

While the grid has become more reliable since 2021, several threats remain that could impede its continued progress.

  • Population growth remains one of the biggest tests for Texas grid reliability. The state is expected to add roughly 15 million residents over the next three decades.
  • Data centers, industrial expansion, and corporate relocations continue to drive electricity demand higher. Houston sits at the center of that growth, making it a key region to watch to see whether Texas can keep pace with rising energy needs.
  • Increased weather volatility in Texas will make demand predictions even more challenging. Currently, Texas supplies almost 45% of its energy needs with natural gas. Natural gas production and extraction are particularly susceptible to cold weather and freezing conditions.

What “No Blackouts” Really Means for Texans

A stronger grid comes with a price tag. Meeting Texas’s growing demand requires major investments in generation, transmission, and emergency preparedness, and those costs ultimately flow to consumers through higher electric bills.

At the same time, Texans are becoming more proactive about managing energy use and protecting against outages, with more homeowners investing in generators, battery storage, and solar as part of long-term energy planning.

Final Thoughts

As lawmakers continue to debate how to recover grid investments, consumers will ultimately bear part of the cost. The challenge moving forward is improving reliability while keeping electricity affordable for Texans.

Texas continues to expand renewable generation to diversify the power mix, and battery storage is quickly becoming a key reliability tool because it can respond almost instantly to demand spikes. At the same time, advanced forecasting technology is helping operators better anticipate grid stress.

The Texas energy market is evolving fast, driven by population growth and rising electricity demand. Lawmakers, regulators, and grid operators will need to stay aligned to keep reliability moving in the right direction, while consumers will play a bigger role in managing how and when they use electricity.

So, is Texas better prepared for winter today? In many ways, yes. But the grid is still vulnerable to extreme weather and rapid demand growth. Maintaining reliability will require continued investment, planning, and coordination to keep the lights on across the state.

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Sam Luna is director at BKV Energy, where he oversees brand and go-to-market strategy, customer experience, marketing execution, and more.