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Show me the money: Top Houston energy transition funding, investment news from 2024

year in review

Here were this year's most-read funding news stories on EnergyCapital. Photo via Getty Images

Editor's note: As the year comes to a close, EnergyCapital is looking back at the year's top stories in Houston energy transition. From firms with fresh funding to deploy to energy tech companies to startups raising venture capital investment, Houston has some wins to celebrate this year when you follow the money. Here were the top five most-read articles — according to EnergyCapital reporting — covering investment deals of 2024. Be sure to click through to read the full story.

Houston PE firm unveils oversubscribed $450M fund to advance nuclear power innovation

Pelican Energy Partners has raised more than it intended with its new nuclear-focused fund. Photo via Getty Images

Houston-based private equity firm Pelican Energy Partners has raised a $450 million fund to invest in nuclear energy services and equipment companies.

Pelican had aimed to raise $300 million for Pelican Energy Partners Base Zero LP and had imposed an initial “hard cap” of $400 million. Investors include endowments, foundations, family offices, and pension plans.

As of the fund’s closing date, the fund had wrapped up six investments, with several more deals expected to close by the end of this year. Continue reading.

Robotics co. with growing Houston presence closes series B

The advanced submersible robotics company will put the funds toward international expansion. Photo courtesy of Square Robot

Houston- and Boston-based Square Robot Inc. closed a series B round of funding last month.

The advanced submersible robotics company raised $13 million, according to Tracxn.com, and says it will put the funds toward international expansion.

"This Series B round, our largest to date, enables us to accelerate our growth plans and meet the surging global demand for our services,” David Lamont, CEO, said in a statement. Continue reading.

Houston industrial decarbonization-focused PE firm scores $725M to launch new business unit

HF Capital, the Knoxville, Tennessee-based investment arm of the Haslam family, made the multimillion-dollar commitment to set up Ara Energy Decarbonization. Photo via arapartners.com

Houston-based Ara Partners, a private equity firm that focuses on industrial decarbonization investments, is receiving up to $725 million from a Tennessee-based family office to launch an energy decarbonization unit.

HF Capital, the Knoxville, Tennessee-based investment arm of the Haslam family, made the multimillion-dollar commitment to set up Ara Energy Decarbonization. The new business will work toward reducing carbon emissions at ethanol plants, natural gas power plants, and other traditional energy assets.

The Haslam family founded Pilot Co., North America’s largest transportation fuel business and chain of travel centers. Shameek Konar, former CEO of Pilot, has been tapped to lead Ara Energy Decarbonization. Continue reading.

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

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 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." Continue reading.

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

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

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.” Continue reading.

Here's what report-based news article covering Houston and Texas amid the energy transition trended this year. Photo via Getty Images

How Houston stacks up: Here were 2024's top report-based, energy-focused articles

year in review

Editor's note: As the year comes to a close, EnergyCapital is looking back at the year's top stories in Houston energy transition. Progress can be tracked in a number of ways, and reports help shine a light on the city and state's movement toward a cleaner energy industry. The following report-based articles that stood out to readers this year — be sure to click through to read the full story.


Houston's energy industry deemed both a strength and weakness on global cities report

Houston could have ranked higher on a global report of top cities in the world if it had a bit more business diversification. Photo via Getty Images

A new analysis positions the Energy Capital of the World as an economic dynamo, albeit a flawed one.

The recently released Oxford Economics Global Cities Index, which assesses the strengths and weaknesses of the world’s 1,000 largest cities, puts Houston at No. 25.

Houston ranks well for economics (No. 15) and human capital (No. 18), but ranks poorly for governance (No. 184), environment (No. 271), and quality of life (No. 298).

New York City appears at No. 1 on the index, followed by London; San Jose, California; Tokyo; and Paris. Dallas lands at No. 18 and Austin at No. 39.

In its Global Cities Index report, Oxford Economics says Houston’s status as “an international and vertically integrated hub for the oil and gas sector makes it an economic powerhouse. Most aspects of the industry — downstream, midstream, and upstream — are managed from here, including the major fuel refining and petrochemicals sectors.” Continue reading.

Report: Solar tops coal in Texas for energy generation for the first time

In Texas last month, coal use dropped and solar energy soared, according to a new report. Photo via Pexels

For the first time in Texas, according to a recent report, solar energy generation surpassed the output by coal.

The report — from the Institute For Energy Economics and Financial Analysis — sourced the Energy Information Administration’s hourly grid monitor for March 2024. This shift in a predominantly oil and gas dominated history of Texas energy output, was due to solar power’s 3.26 million megawatt-hours to Electric Reliability Council of Texas (ERCOT) grid, compared to coal’s 2.96 million MWh.

In addition, coal’s market share fell below 10 percent to 9 percent for the first time ever, to just over 9 percent. The increase in solar energy pushed solar’s share of ERCOT generation to more than 10 percent for the month, which was also a first. Continue reading.

Houston rises as emerging hub for $6B global AI in oil and gas industry, per new report

The research outfit says North America leads global AI growth in oil and gas, with Houston playing a pivotal role. Image via Shutterstock

Houston is emerging as a hub for the development of artificial intelligence in the oil and gas industry — a global market projected to be worth nearly $6 billion by 2028.

This fresh insight comes from a report recently published by ResearchAndMarkets.com. The research outfit says North America leads global AI growth in oil and gas, with Houston playing a pivotal role.

“With AI-driven innovation at its core, the oil and gas industry is set to undergo a profound transformation, impacting everything from reservoir optimization to asset management and energy consumption strategies — setting a new standard for the future of the sector,” says ResearchAndMarkets.com. Continue reading.

Here's how Texas ranks among the greenest states

It might only be Texas' grass that is green. Photo via Getty Images

Turns out — Texas might not be as green as you thought.

A new report from WalletHub looked at 25 key metrics — from green buildings per capita to energy consumption from renewable resources — to evaluate the current health of states' environment and residents’ environmental-friendliness. Texas ranked No. 38, meaning it was the thirteenth least green state, only scoring 50.40 points out of 100.

“It’s important for every American to do their part to support greener living and protect our environment. However, it’s much easier being green in some states than others," writes Cassandra Happe, a WalletHub Analyst, in the report. "For example, if a state doesn’t have a great infrastructure for alternative-fuel vehicles, it becomes much harder for residents to adopt that technology. Living in a green state is also very beneficial for the health of you and your family, as you benefit from better air, soil and water quality.” Continue reading.

Texas finishes low on list of EV charging stations despite increased efforts in Houston

California, with its 14,500 charging stations, has more EV charging stations than New York, Florida, and Texas combined. Photo via Getty Images

In a new report that ranked states with the most electric vehicle chargers, Texas falls behind other similarly-sized states

The SmartAsset study looked at the closest EV charging stations equivalent to a trip to the gas station — factoring in each state's population. California, with its 14,500 charging stations, has five times the EV charging stations as New York (3,327), Florida (2,913) and Texas (2,472). While California ranked No. 1 on the list, Texas found itself at No. 41.

The report used EV charger and station data for each state from the U.S. Department of Energy for 2022 and 2021. Population data is for 2022 and comes from the U.S. Census Bureau 1-Year American Community Survey. Cities were also ranked by the number of fast chargers per capita. In 2022, Texas had 1,386 fast DC chargers, 2,472 EV charging stations, and a fast charger growth year over year 53.5 percent. Continue reading.

These are the most-read Houston energy transition startup news stories of the year. Photo via Getty Images

The future is here: Top Houston energy transition startup stories of the year

year in review

Editor's note: As the year comes to a close, EnergyCapital is looking back at the year's top stories in Houston energy transition. EnergyCapital covers the entire energy transition ecosystem, including the businesses from major public corporations to small but growing startups with promising technologies. This year, top energy startup news included award-winning innovators, a new hub for energy tech startups, big deals, and more. Check out each of the most-read stories below — be sure to click to continue reading each article.

Local energy innovators recognized at annual Houston Innovation Awards

At an event celebrating Houston innovation, these four energy transition leaders were recognized. Photos courtesy

This week, the Houston innovation ecosystem celebrated big wins from the year, and members of the energy transition community were recognized alongside other innovators.

The Houston Innovation Awards honored over 40 finalists across categories, naming the 12 winners and honoring the two Trailblazer Legacy Awards at the event. The event, hosted at TMC Helix Park on November 14 named and celebrated the winners, which included four energy transition innovators. Click to see what energy leaders secured wins.

Houston startup taps new corporate partner for AI-backed sustainability consumer tech

IBM and Boxes recently partnered to integrate the IBM watsonx Assistant into Boxes devices, providing a way for consumer packaged brands to find out more than ever about what its customers like and want. Photo courtesy of Boxes

With the help of a new conversational artificial intelligence platform, a Houston startup is ready to let brands get up close and personal with consumers while minimizing waste.

IBM and Boxes recently partnered to integrate the IBM watsonx Assistant into Boxes devices, providing a way for consumer packaged brands to find out more than ever about what its customers like and want.

The Boxes device, about the size of a 40-inch television screen, dispenses products to consumers in a modern and sustainable spin on the old-fashioned large vending machine.

CEO Fernando Machin Gojdycz learned that business from his entrepreneur father, Carlos Daniel Machin, while growing up in Uruguay.

“That’s where my passion comes from — him,” Gojdycz says of his father. In 2016, Gojdycz founded Boxes in Uruguay with some engineer friends

Funded by a $2,000 grant from the University of Uruguay, the company's mission was “to democratize and economize affordable and sustainable shopping,” in part by eliminating wasteful single-use plastic packaging. Click to continue reading.

Houston startup selected for inaugural climatetech global entrepreneur competition

Syzygy Plasmonics is going to be competing in Gastech's new startup competition. Photo via Getty Images

A global natural gas, LNG, hydrogen, low-carbon solutions, and climate technology convention is coming to Houston next month — but only one Houston startup is geared up for the event's new startup competition.

Gastech invited 20 promising companies for its inaugural Gastech Start-Up Competition, and 11 companies have signed on to participate so far. Houston-based Syzygy Plasmonics, which created and is scaling a sustainable photocatalytic reactor, is currently the only local company among the participants.

“Gastech's focus on creating a low-carbon, affordable energy future aligns perfectly with Syzygy's drive to produce low-carbon, low-cost hydrogen, liquid fuels, and syngas," Syzygy Plasmonics CEO Trevor Best says. "We can't wait to represent Houston as the only startup from the area to be included among the 11 finalists in the Gastech Climatetech Global Entrepreneur Competition.” Click to continue reading.

Houston leaders launch new downtown hub to support energy transition innovation

Energy Tech Nexus has opened in downtown Houston. Photo by Natalie Harms/EnergyCapital

Three Houston energy innovators have cut the ribbon on a new space for energy transition innovation.

The Energy Tech Nexus, located in the historic Niels Esperson Building at the corner of Travis and Rusk Avenue, opened on September 10, which was proclaimed Energy Tech Nexus Day by the city.

Jason Ethier and Juliana Garaizar, formerly in leadership roles at Greentown Labs, teamed up with Nada Ahmed, previously headed innovation and transformation at Aker Solutions, launched ETN as a community for energy transition startups. The new hub plans to host incubation programs, provide mentorship, and open doors to funding and strategic partnerships for its members.

"We are creating more than a space for innovation," Garaizar says in a news release. "We are crafting a community where pioneers in technology and energy converge to challenge the status quo and accelerate the shift to sustainable energy solutions." Click to continue reading.

Houston bio-based materials founder rebrands, evolves future-focused sustainability startup

Zimri T. Hinshaw, founder and CEO of Rheom Materials, joins the Houston Innovators Podcast. Photo courtesy of Rheom

At first, Zimri T. Hinshaw just wanted to design a sustainable, vegan jacket inspired by bikers he saw in Tokyo. Now, he's running a bio-based materials company with two product lines and is ready to disrupt the fashion and automotive industries.

Hinshaw founded Rheom Materials (née Bucha Bio) in 2020, but a lot has changed since then. He moved the company from New York to Houston, built out a facility in Houston's East End Maker Hub, and rebranded to reflect the company's newest phase and extended product lines, deriving from dozens of different ingredients, including algae, seaweed, corn, other fruits and vegetables, and more.

"As a company, we pivoted our technology from growing kombucha sheets to grinding up bacteria nanocellulose from kombucha into our products and then we moved away from that entirely," Hinshaw says on the Houston Innovators Podcast. "Today, we're designing different materials that are more sustainable, and the inputs are varied." Click to continue reading.

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Houston-based ENGIE to add new wind and solar projects to Texas grid

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Houston-based ENGIE North America Inc. has expanded its partnership with Los Angeles-based Ares Infrastructure Opportunities to add 730 megawatts of renewable energy projects to the ERCOT grid.

The new projects will include one wind and two solar projects in Texas.

“The continued growth of our relationship with Ares reflects the strength of ENGIE’s portfolio of assets and our track record of delivering, operating and financing growth in the U.S. despite challenging circumstances,” Dave Carroll, CEO and Chief Renewables Officer of ENGIE North America, said in a news release. “The addition of another 730 MW of generation to our existing relationship reflects the commitment both ENGIE and Ares have to meeting growing demand for power in the U.S. and our willingness to invest in meeting those needs.”

ENGIE has more than 11 gigawatts of renewable energy projects in operation or under construction in the U.S. and Canada, and 52.7 gigawatts worldwide. The company is targeting 95 gigawatts by 2030.

ENGIE launched three new community solar farms in Illinois since December, including the 2.5-megawatt Harmony community solar farm in Lena and the Knox 2A and Knox 2B projects in Galesburg.

The company's 600-megawatt Swenson Ranch Solar project near Abilene, Texas, is expected to go online in 2027 and will provide power for Meta, the parent company of social media platform Facebook. Late last year, ENGIE also signed a nine-year renewable energy supply agreement with AstraZeneca to support the pharmaceutical company’s manufacturing operations from its 114-megawatt Tyson Nick Solar Project in Lamar County, Texas.

Houston geothermal company raises $97M Series B

fresh funding

Houston-based geothermal energy startup Sage Geosystems has closed its Series B fundraising round and plans to use the money to launch its first commercial next-generation geothermal power generation facility.

Ormat Technologies and Carbon Direct Capital co-led the $97 million round, according to a press release from Sage. Existing investors Exa, Nabors, alfa8, Arch Meredith, Abilene Partners, Cubit Capital and Ignis H2 Energy also participated, as well as new investors SiteGround Capital and The UC Berkeley Foundation’s Climate Solutions Fund.

The new geothermal power generation facility will be located at one of Ormat Technologies' existing power plants. The Nevada-based company has geothermal power projects in the U.S. and numerous other countries around the world. The facility will use Sage’s proprietary pressure geothermal technology, which extracts geothermal heat energy from hot dry rock, an abundant geothermal resource.

“Pressure geothermal is designed to be commercial, scalable and deployable almost anywhere,” Cindy Taff, CEO of Sage Geosystems, said in the news release. “This Series B allows us to prove that at commercial scale, reflecting strong conviction from partners who understand both the urgency of energy demand and the criticality of firm power.”

Sage reports that partnering with the Ormat facility will allow it to market and scale up its pressure geothermal technology at a faster rate.

“This investment builds on the strong foundation we’ve established through our commercial agreement and reinforces Ormat’s commitment to accelerating geothermal development,” Doron Blachar, CEO of Ormat Technologies, added in the release. “Sage’s technical expertise and innovative approach are well aligned with Ormat’s strategy to move faster from concept to commercialization. We’re pleased to take this natural next step in a partnership we believe strongly in.”

In 2024, Sage agreed to deliver up to 150 megawatts of new geothermal baseload power to Meta, the parent company of Facebook. At the time, the companies reported that the project's first phase would aim to be operating in 2027.

The company also raised a $17 million Series A, led by Chesapeake Energy Corp., in 2024.

Houston expert discusses the clean energy founder's paradox

Guest Column

Everyone tells you to move fast and break things. In clean energy, moving fast without structural integrity means breaking the only planet we’ve got. This is the founder's paradox: you are building a company in an industry where the stakes are existential, the timelines are glacial, and the capital requires patience.

The myth of the lone genius in a garage doesn’t really apply here. Clean energy startups aren’t just fighting competitors. They are fighting physics, policy, and decades of existing infrastructure. This isn’t an app. You’re building something physical that has to work in the real world. It has to be cheaper, more reliable, and clearly better than fossil fuels. Being “green” alone isn’t enough. Scale is what matters.

Your biggest risks aren’t competitors. They’re interconnection delays, permitting timelines, supply chain fragility, and whether your first customer is willing to underwrite something that hasn’t been done before.

That reality creates a brutal filter. Successful founders in this space need deep technical knowledge and the ability to execute. You need to understand engineering, navigate regulation, and think in terms of markets and risk. You’re not just selling a product. You’re selling a future where your solution becomes the obvious choice. That means connecting short-term financial returns with long-term system change.

The capital is there, but it’s smarter and more demanding. Investors today have PhDs in electrochemistry and grid dynamics. They’ve been burned by promises of miracle materials that never left the lab. They don't fund visions; they fund pathways to impact that can scale and make financial sense. Your roadmap must show not just a brilliant invention, but a clear, believable plan to drive costs down over time.

Capital in this sector isn’t impressed by ambition alone. It wants evidence that risk is being retired in the right order — even if that means slower growth early.

Here’s the upside. The difficulty of clean energy is also its strength. If you succeed, your advantage isn’t just in software or branding. It’s in hardware, supply chains, approvals, and years of hard work that others can’t easily copy. Your real competitors aren’t other startups. They’re inertia and the existing system. Winning here isn’t zero-sum. When one solution scales, it helps the entire market grow.

So, to the founder in the lab, or running field tests at a remote site: your pace will feel slow. The validation cycles are long. But you are building in the physical world. When you succeed, you don’t have an exit. You have a foundation. You don't just have customers; you have converts. And the product you ship doesn't just generate revenue; it creates a legacy.

If your timelines feel uncomfortable compared to software, that’s because you’re operating inside a system designed to resist change. And let’s not forget you are building actual physical products that interact with a complex world. Times are tough. Don’t give up. We need you.

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Nada Ahmed is the founding partner at Houston-based Energy Tech Nexus.

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