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

seeing green

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

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.

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EDP Renewables North America LLC has announced four new solar projects in Texas, Mississippi and Illinois for major tech customers. Photo via Getty Images

Houston renewables developer powers 4 new solar parks for Amazon, Microsoft

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Houston-based EDP Renewables North America LLC announced that it has powered up four new projects across the country for customers Amazon and Microsoft.

The new projects come about a month after EDP Renewables powered up its new California solar park for Houston-based Shell Energy North America and the Eureka, California-based Redwood Coast Energy Authority.

EDP Renewables announced that it also launched the 100-megawatt Ragsdale Solar Park in Madison Country, Mississippi, in Q4 2024. Amazon has contracted for all 100 megawatts from the solar park through a 15-year power agreement.

The Ragsdale project is the company's second utility-scale project in Mississippi after EDP Renewables launched its Pearl River Solar Park last year.

“Ragsdale signifies EDP Renewables’ ongoing commitment to Mississippi, its communities, and local businesses. The opportunity to develop utility-scale solar and contract directly with customers like Amazon, who are also committed to expanding their own presence in Mississippi, has been invaluable," Sandhya Ganapathy, CEO of EDP Renewables North America, said in a statement. "We are proud to aid the state’s commercial and industrial growth with homegrown energy solutions."

Additionally, EDP Renewables has powered three new projects for tech-giant Microsoft, with two in Illinois and one in Texas.

In December EDP Renewables powered a 150-megawatt Cattlemen II Solar Project in Milam County, Texas, about 70 miles northeast of the Austin area. It joins the 240-megawatt Cattlemen I Solar Park, which came online a year prior.

The company also launched the 140-megawatt Wolf Run Solar Project near Jacksonville, Illinois, and the Hickory Solar Project in Jerseyville, Illinois, late last year. The Hickory project was developed in conjunction with D.C.-based Volt Energy Utility.

Microsoft has agreed to purchase 389 megawatts and renewable energy credits from the projects, which brings the portfolio between the two companies up to five projects in total. It also includes the Timber Road IV Wind Farm located in Payne, Ohio.

"The importance of ensuring benefits flowing from renewable energy development directly into communities has never been more important,” Ganapathy added in a statement. “Through these three additional projects, we’re keeping our promise – and indeed the industry’s promise – to contribute to the nation’s growing energy demand and in that process invest in long-lasting economic growth of our communities.”

Plug and Play is opening a Sugar Land hub to accelerate startups and innovation across smart cities, energy, health, and mobility sectors. Photo courtesy of Plug and Play

Global organization unveils new location in Houston suburb to drive energy transition innovation and beyond

moving in

Leading innovation platform Plug and Play announced the opening of its new flagship Houston-area location in Sugar Land, which is its fourth location in Texas.

Plug and Play has accelerated over 2,700 startups globally last year with corporate partners that include Dell Technologies, Daikin, Microsoft, LG Chem, Shell, and Mercedes. The company’s portfolio includes PayPal, Dropbox, LendingClub, and Course Hero, with 8 percent of the portfolio valued at over $100 million.

The deal, which facilitated by the Sugar Land Office of Economic Development and Tourism, will bring a new office for the organization to Sugar Land Town Square with leasing and hiring between December and January.

The focus will be on “smart cities,” which include energy, health, transportation, and mobility sectors. The official launch is slated for the first quarter of 2025, and will feature 15 startups announced on Selection Day.

"By expanding to Sugar Land, we’re creating a space where startups can access resources, build partnerships, and scale rapidly,” VP Growth Strategy at Plug and Play Sherif Saadawi says in a news release. “This location will help fuel Texas' innovation ecosystem, providing entrepreneurs with the tools and networks they need to drive real-world impact and contribute to the state’s technological and economic growth."

Plug and Play plans to hire four full-time equivalent employees and accelerate two startup batches per year. One Sugar Land City representative will serve as a board member.

“We are excited to welcome Plug and Play to Sugar Land,” Mayor of Sugar Land Joe Zimmerma adds. “This investment will help us connect with corporate contacts and experts in startups and businesses that would take us many years to reach on our own. It allows us to create a presence, attract investments and jobs to the city, and hopefully become a base of operations for some of these high-growth companies.”

The organization originally entered the Houston market in 2019 and now has locations in Bryan/College Station, Frisco, and Cedar Park in Texas.

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This article originally ran on InnovationMap.

Last month, the inaugural Houston Energy and Climate Startup Week 2024 successfully highlighted the GHP and HETI's mission. Photo via GHP

Highlights from the inaugural Houston Energy and Climate Startup Week

the view from heti

Houston has become the hub for startups and companies looking to scale innovative technologies that are transforming the energy industry and advancing a sustainable, low-carbon future. Last month, the inaugural Houston Energy and Climate Startup Week 2024 successfully highlighted this mission.

Rice Alliance for Technology and Entrepreneurship, Halliburton Labs, Greentown Labs, Digital Wildcatters launched the inaugural startup week in collaboration with the Partnership’s Houston Energy Transition Initiative. The week brought together leading energy and climate venture capital investors, industry leaders, and startups from around the world.

Over 30 events took place from September 9-13, featuring more than 100 speakers and 125 startups. Attendance numbers came in at over 1,400 people across the week’s anchor events, and additional events were individually organized by organizations and startups in Houston’s ecosystem.

“By hosting the Houston Energy & Climate Startup Week, we're not just showcasing our city's strengths - we're actively shaping its future. This event is a critical catalyst for fostering collaboration, investment and talent development within the burgeoning energy and climate tech ecosystem. This week is about demonstrating our commitment to that future and inspiring the next generation of energy innovators,” says Janice Tran, Kanin Energy CEO & Co-Founder

The Kickoff event, sponsored by Repsol, Microsoft and BBVA, hosted fireside chats by several of Houston’s leading startups, including Solugen, Cemvita, Kanin Energy and Syzygy.

“Houston is at the forefront of not just energy innovation, but industrial innovation more broadly. With the momentum that's built over the last few years, it's the perfect time to showcase our progress and drive further advancements in climate solutions,” says Gaurab Chakrabarti, Solugen CEO and co-founder.

Houston is home to more than 65 incubators and accelerators and over 260 cleantech and climate tech startups. The region continues to build momentum and is focused on attracting investment for this growing sector, seeing a 577 percent growth since 2019. According to Partnership data, there has been over $1.95 billion and 175 deals with cleantech and climate tech startups.

"Houston is uniquely positioned to tackle the greatest challenge of our time - producing more energy with fewer emissions. This city is where energy innovation scales and opportunity thrives. As a natural hub for startups and investors, Houston brought this to life during Houston Energy and Climate Startup Week. Years in the making, this event was launched to answer the question: Can the whole be greater than the sum of its parts? This past week proved it can. We look forward to continue building on this successful week,” says Jane Stricker, senior vice president at Greater Houston Partnership and executive director of the Houston Energy Transition Initiative.

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This article originally ran on the Greater Houston Partnership's Houston Energy Transition Initiative blog. HETI exists to support Houston's future as an energy leader. For more information about the Houston Energy Transition Initiative, EnergyCapitalHTX's presenting sponsor, visit htxenergytransition.org.

As emerging technology continues to grow electricity load demand, Cloverleaf has identified an opportunity to develop large-scale digital infrastructure sites powered by low-carbon electricity. Photo via Getty Images

Houston-based clean energy site developer raises $300M to decarbonize big tech projects

seeing green

Houston energy executives have started a new company dedicated to developing clean-powered infrastructure for the large electric loads.

Cloverleaf Infrastructure, dually headquartered in Houston and Seattle, Washington, announced its launch and $300 million raised from NGP and Sandbrook Capital, two private equity firms. The company's management team also invested in the company.

As emerging technology continues to grow electricity load demand, Cloverleaf has identified an opportunity to develop large-scale digital infrastructure sites powered by low-carbon electricity.

"The rapid growth in demand for electricity to power cloud computing and artificial intelligence poses a major climate risk if fueled by high-emission fossil fuels," David Berry, Cloverleaf's CEO, says in a news release. "However, it's also a major opportunity to catalyze the modernization of the US grid and the transition to a smarter and more sustainable electricity system through a novel approach to development.

"Cloverleaf is committed to making this vision a reality with the support of leading climate investors like Sandbrook and NGP."

Berry, who's based in Houston, previously co-founded and served as CFO at ConnectGen and Clean Line Energy Partners, clean energy and transmission developers. Last year, he co-founded Cloverleaf with Seattle-based Brian Janous and CTO Jonathan Abebe, who most recently held a senior role at the United States Department of Energy. Nur Bernhardt, director of Energy Strategy at Microsoft who's also based in Seattle, rounds out the executive team as vice president.

"The large tech companies have become dominant players in the electricity sector, and they are genuinely determined to power their growth with the lowest possible emissions," Janous, who serves as chief commercial officer, says in the release. "Achieving this objective doesn't depend on disruptive new technologies as much as it does on dedicated teams working hand in hand with utility partners to maximize the use of the clean generation, storage, and other technologies we already have."

Cloverleaf will work with regional U.S. utilities and data center operators to provide clean electricity at scale through strategic investments in transmission, grid interconnection, land, onsite power generation, and electricity storage, per the release.

"The sustainable development of digital infrastructure at scale is fundamentally a technical power problem," Alfredo Marti, partner at Sandbrook, adds. "We have witnessed members of the Cloverleaf team effectively address this challenge for many years through a blend of creativity, specialized engineering, a partnership mindset, and astute capital deployment."

Here's 1PoinFive's newest customer on its Texas CCUS project. Photo via 1pointfive.com

Oxy subsidiary secures Microsoft as largest-ever DAC carbon removal credit customer

major move

Occidental Petroleum’s Houston-based carbon capture, utilization and, sequestration (CCUS) subsidiary, 1PointFive, has inked a six-year deal to sell 500,000 metric tons of carbon dioxide removal credits to software giant Microsoft.

In a news release, 1Point5 says this agreement represents the largest-ever single purchase of carbon credits enabled by direct air capture (DAC). DAC technology pulls CO2 from the air at any location, not just where carbon dioxide is emitted.

Under the agreement, the carbon dioxide that underlies the credits will be stored in a below-the-surface saline aquifer and won’t be used to produce oil or gas.

“A commitment of this magnitude further demonstrates how one of the world’s largest corporations is integrating scalable [DAC] into its net-zero strategy,” says Michael Avery, president and general manager of 1PointFive. “Energy demand across the technology industry is increasing, and we believe [DAC] is uniquely suited to remove residual emissions and further climate goals.”

Brian Marrs, senior director for carbon removal and energy at Microsoft, says DAC plays a key role in Microsoft’s effort to become carbon-negative by 2030.

The carbon dioxide will be stored at 1PointFive’s first industrial-scale DAC plant, being built near Odessa. The $1.3 billion Stratos project, which 1Point5 is developing through a joint venture with investment manager BlackRock, is designed to capture up to 500,000 metric tons of CO2 per year.

The facility is scheduled to open in mid-2025.

Aside from Microsoft, organizations that have agreed to buy carbon removal credits from 1Point5 include Amazon, Airbus, All Nippon Airways, the Houston Astros, the Houston Texans, and TD Bank.

Occidental says 1PointFive plans to set up more than 100 DAC facilities worldwide by 2035.

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Fervo Energy lands $200 million in capital for new geothermal project

fresh funding

Houston-based Fervo Energy, a producer of geothermal power, has secured $205.6 million in capital to help finance its geothermal project in southern Utah.

The money will go toward the first and second phases of Cape Station, a geothermal energy plant being developed in Beaver County, Utah. Beaver County is roughly an equal distance between Salt Lake City and Las Vegas.

The $205.6 million in capital came from three sources:

  • $100 million in equity from Breakthrough Energy Catalyst, a Kirkland, Washington-based platform that invests in emissions-reducing projects.
  • $60 million addition to Fervo’s existing loan from Mercuria, a Swiss energy and commodities trader. The revolving loan now totals $100 million.
  • $45.6 million in additional bridge debt financing from XRL-ALC, an affiliate of Irvington, New York-based X-Caliber Rural Capital. X-Caliber is a USDA-approved lender. The initial bridge loan was $100 million.

The first phase of Cape Station will supply 100 megawatts of carbon-free electricity to the power grid starting next year. Another 400 megawatts of capacity is supposed to go online by 2028. Fervo has permission to expand Cape Station’s capacity to as much as 2 gigawatts. On an annual basis, 2 gigawatts can supply enough electricity to power about 1.4 million homes.

“These investments demonstrate what we’ve known all along: Fervo’s combination of technical excellence, commercial readiness, and market opportunity makes us a natural partner for serious energy capital. The confidence our investors have in Fervo and in the Cape asset affirms that next-generation geothermal is ready to play a defining role in America’s energy future,” David Ulrey, Fervo’s CFO, said in a news release.

ExxonMobil tops Fortune 500 list and more Houston energy news to know

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Editor's note: It's time to look back at the biggest energy transition news for the first half of June 2025. Here are the five most-read EnergyCapital stories from June 1-13:

1. Houston earns No. 3 spot among cities with most Fortune 500 headquarters

Twenty-six Houston-area companies landed on the latest Fortune 500 list. Photo via Getty Images

Houston maintained its No. 3 status this year among U.S. metro areas with the most Fortune 500 headquarters. Fortune magazine tallied 26 Fortune 500 headquarters in the Houston area, behind only the New York City area (62) and the Chicago area (30). On the Fortune 500 list for 2025, Spring-based ExxonMobil remained the highest-ranked company based in the Houston area as well as in Texas, sitting at No. 8 nationally. Continue reading.

2. Tech entrepreneur turned climate investor is on a mission to monetize carbon removal

Yao Huang is the guest on the latest episode of the Energy Tech Startups Podcast. Courtesy photo

A seasoned tech entrepreneur turned climate investor, Yao Huang brings sharp clarity to one of the biggest challenges in climate innovation: how do we fund and scale technologies that remove carbon without relying on goodwill or government subsidies? In this episode of the Energy Tech Startups Podcast, Yao sits down for a wide-ranging conversation that redefines how we think about decarbonization. Continue reading.


3. Houston students take home top prizes at DOE wind energy competition

Rice Wind Energy had a strong showing at the DOE's 2025 Collegiate Wind Competition. Photo courtesy Rice University.

The student-led Rice Wind Energy team clinched second place overall at the U.S. Department of Energy’s 2025 Collegiate Wind Competition (CWC), which challenges students nationwide to design and build wind turbines, develop wind energy projects and engage in public outreach to promote renewable energy. Continue reading.

4. Houston biotech company continues to expand in Brazil with new research partner

Cemvita has partnered with Brazilian sustainable research institution REMA. Photo courtesy of Cemvita

Houston biotech company Cemvita has announced a strategic collaboration with Brazilian sustainable research institution REMA. The move aims to promote Cemvita’s platform for evaluating and testing carbon waste streams as feedstocks for producing sustainable oil. Continue reading.

5. 6 Houston energy transition events to attend in June 2025

Meet the newest members of Greentown Labs at Transition on Tap. Photo via Greentown Labs

June has arrived, and with it come more must-attend events in the energy transition sector. Mark your calendar today for these conferences, symposiums, summits, expos, and more. Continue reading.

Syzygy unveils plans for groundbreaking sustainable aviation fuel facility

coming soon

Houston-based Syzygy Plasmonics announced plans to develop what it calls the world's first electrified facility to convert biogas into sustainable aviation fuel (SAF).

The facility, known as NovaSAF 1, will be located in Durazno, Uruguay. It is expected to produce over 350,000 gallons of SAF annually, which would be considered “a breakthrough in cost-effective, scalable clean fuel,” according to the company.

"This is more than just a SAF plant; it's a new model for biogas economics," Trevor Best, CEO of Syzygy Plasmonics, said in a news release. "We're unlocking a global asset class of underutilized biogas sites and turning them into high-value clean fuel hubs without pipelines, costly gas separation, or subsidy dependence.”

The project is backed by long-term feedstock and site agreements with one of Uruguay's largest dairy and agri-energy operations, Estancias del Lago, while the permitting and equipment sourcing are ongoing alongside front-end engineering work led by Kent.

Syzygy says the project will result in a 50 percent higher SAF yield than conventional thermal biogas reforming pathways and will utilize both methane and CO2 naturally found in biogas as feedstocks, eliminating the need for expensive CO2 separation technologies and infrastructure. Additionally, the modular facility will be designed for easy replication in biogas-rich regions.

The new facility is expected to begin commercial operations in Q1 2027 and produce SAF with at least an 80 percent reduction in carbon intensity compared to Jet A fuel. The company says that once fully commercialized the facility will produce SAF at Jet-A fuel cost parity.

“We believe NovaSAF represents one of the few viable pathways to producing SAF at jet parity and successfully decarbonizing air travel,” Best added in the release.

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