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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.

With the deal, Midland, Texas-based Cottonmouth will make a $50 million equity investment into Houston-based Verde. Image via Shutterstock

Houston clean fuels co. secures $50M investment from Diamondback Energy subsidiary

money moves

Verde Clean Fuels announced the entry into a stock purchase agreement with Cottonmouth Ventures, a wholly-owned subsidiary of Diamondback Energy.

With the deal, Midland, Texas-based Cottonmouth will make a $50 million equity investment into Houston-based Verde.

The investment will consist of the purchase of 12.5 million shares of Verde’s Class A common stock at a purchase price of $4.00 per share. Closing of the investment is anticipated to occur during the first quarter of the new year, which will be subject to satisfaction of customary closing conditions. The investment would represent the second investment by Cottonmouth in Verde over the past two years, which would equal a total investment of $70 million. This would make Cottonmouth the second largest shareholder of Verde.

“We are pleased to further our relationship with Diamondback and continue advancing our plans to deploy our technology through the development of commercial production plants,” Ernest Miller, CEO of Verde, says in a news release. “Diamondback is a strategic industry partner at the forefront of bringing sustainable operational practices to the oilfield and supporting the overall transition to clean energy.”

Verde Clean Fuels key pioneering technology is its "syngas-to-gasoline plus" (STG+®), which turns diverse feedstocks like biomass, municipal solid waste (MSW), and natural gas – into gasoline or methanol. Verde is able to deploy facilities in areas with abundant and low-cost feedstock. The company has developed two different pathways to gasoline production with the goal of reducing carbon emissions.

Proceeds from the investment are expected to be used to further the development and construction of potential “natural gas-to-gasoline production plants in the Permian Basin and for other general corporate purposes,” according to Verde Clean Fuels. The proposed plants developed by the parties would produce fully-refined gasoline utilizing Verde’s patented STG+® process from associated natural gas feedstock supplied from Diamondback's operations in the Permian Basin. Verde will also expand its board of directors to eight members and appoint a new director to be designated by Cottonmouth. Cottonmouth will be entitled to appoint an observer to the company’s board.

“This investment is an expression of confidence in our technology, which we believe has the potential to alleviate economic and environmental concerns in the Permian Basin and other pipeline-constrained basins, where flaring and stranded natural gas represent a significant challenge,” Miller adds in the release.

U.S. Congressman Jake Ellzey made the announcement in Dallas last week. Photo courtesy of Google

Google to invest $1B in clean energy, data center tech in Texas

money moves

Google is making a big investment in Texas to the tune of $1 billion.

According to a news release from the company, the tech giant will spend more than $1 billion to support its cloud and data center infrastructure and expand its commitment to clean energy.

The $1 billion will be spent on data center campuses in Midlothian and Red Oak to help meet growing demand for Google Cloud, AI innovations, and other digital products and services such as Search, Maps, and Workspace.

In addition to its data center investment, Google has also forged long-term power purchase agreements with Houston-based Engie, as well as Madrid-based entities Elawan, Grupo Cobra, and X-ELIO for solar energy based in Texas. Together, these new agreements are expected to provide 375 MW of carbon-free energy capacity, which will help support Google’s operations in Texas.

These agreements were facilitated through LEAP (LevelTen Energy’s Accelerated Process), which was co-developed by Google and LevelTen Energy to make sourcing and executing clean energy PPAs more efficient, and contributes to the company’s ambitious 2030 goal to run on 24/7 carbon-free energy on every grid where it operates.

The company has contracted with energy partners to bring more than 2,800 megawatts (MW) of new wind and solar projects to the state. Google’s CFE percentage in the ERCOT grid region, which powers its Texas data centers, nearly doubled from 41 percent in 2022 to 79 percent in 2023.

The initiatives were announced at a conference in Midlothian on August 15, attended by business leaders and politicians including U.S. Congressman Jake Ellzey, Google Cloud VP Yolande Piazza, Ted Cruz, and Citi CIO Shadman Zafar.

The Dallas cloud region is part of Google Cloud's global network of 40 regions that delivers services to large enterprises, startups, and public sector organizations.

In a statement, Piazza said that "expanding our cloud and data center infrastructure in Midlothian and Red Oak reflects our confidence in the state's ability to lead in the digital economy."

Data centers are the engines behind the growing digital economy. Google has helped train more than 1 million residents in digital skills through partnerships with 590 local organizations, including public libraries, chambers of commerce, and community colleges.

In addition to its cloud region and Midlothian data center, Google has offices in Austin, Dallas, and Houston. The new Google’s total investment in Texas to more than $2.7 billion.

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This article originally ran on CultureMap.

Tyler Lancaster, a Chicago-based investor with Energize Capital, shares his investment thesis and why Houston-based Amperon caught his eye. Photo courtesy of Energize Capital

Investor on Texas as a climatetech hub, disruption opportunities with the grid, and more

Q&A

One of the biggest challenges to the energy transition is finding the funds to fuel it. Tyler Lancaster, partner at Energize Capital, is playing a role in that.

Energize Capital, based in Chicago, is focused on disruptive software technology key to decarbonization. One of the firm's portfolio companies is Amperon, which raised $20 million last fall.

In an interview with EnergyCapital, Lancaster shares what he's focused on and why Amperon caught Energize Capital's attention.

EnergyCapital: Energize Capital has been investing in climate tech for the better part of a decade now. What types of companies are you looking for and how are these companies’ technologies affecting the greater energy transition?

Tyler Lancaster: We partner with best-in-class innovators to accelerate the sustainability transition. This means identifying climate technology companies at various stages of maturity — from early commercialization to approaching the public markets — that we can help scale and realize their full potential. We invest in software-first climate technology businesses, with a focus on asset-light digital solutions that can help scale sustainable innovation and enable the new energy economy. Our portfolio currently drives software applications across renewable energy, industrial operations, electrification & mobility, infrastructure resilience, and decarbonization. We primarily focus on proven, commercially available and economically viable energy transition solutions (solar, wind, batteries, heat pumps, etc.). These solutions suffer from challenges related to efficient deployment or operations, where enabling digital platforms can play a key role in optimizing costs.

EC: Amperon is one of Energize Capital's portfolio companies. What made the company a great investment opportunity for Energize Capital?

TL: Accelerating the energy transition will require critical forecasting tools like what Amperon provides. This is underscored by the escalating impact of extreme weather events, increasing penetration of variable energy resources, like wind and solar, on the supply side, and surging demand growth driven by flexible loads and rapid electrification. We believe the need for Amperon’s platform will only continue to grow, and their increased raise from Series A to Series B showed they are scaling smartly. We’ve also known Sean Kelly, Abe Stanway, and the entire Amperon team for a long time, and building strong relationships with founders is how we like to do business. Amperon has built a blue-chip customer base in the energy sector in a very capital efficient manner, which is more important than ever for startups operating in the current equity market environment.

EC: One of the energy transition’s biggest problems is sourcing and storing reliable and affordable energy. What have you observed are the biggest problems with Texas’ electricity grid and what types of new tech can help improve these issues?

TL: Today’s electricity grid and the demands we’re putting on it look very different than they ever have. Major changes in climate and extreme weather show how perilous and unreliable the power grids in this country are, particularly in regions like Texas that don’t have the right infrastructure to shield grids from unusual temperatures — just look at the damage done by 2021’s historic Winter Storm Uri. And consumer demand for electricity is increasing as electrification accelerates globally. The makeup of the grid itself is shifting from centralized power plants to distributed clean energy assets like solar arrays and wind turbines, which brings issues of intermittent electricity production and no traditional way to forecast that.

Tech solutions like Amperon are the only way to navigate the nuances of the energy transition. With global net-zero goals and impending Scope II accounting, Amperon’s expertise in granular data management further enables companies to build accurate, dynamic forecasting models with smart meter data and get more visibility into anticipated market shifts so they can optimize their energy use — all of which helps to create a more resilient and reliable power grid.

EC: You are also on the board of the company, which recently announced a collaboration with Microsoft’s tech. What doors does this open for Amperon?

TL: Partnering with Microsoft and offering its energy demand forecasting solution on the Azure platform enables Amperon to better serve more companies that are navigating the energy transition and a rapidly evolving grid. Many power sector companies are also undergoing cloud migrations with Microsoft Azure having high market share. This partnership will specifically accelerate Amperon’s reach with utility customers, who typically have slower sales cycles but can greatly benefit from improved accuracy in energy demand forecasting and adoption of AI technologies.

EC: As a non-Texas investor, how do you see Houston and Texas-based companies’ investability? Has it changed over the years?

TL: While most tech startups are concentrated on the coasts and in Europe, we see Texas emerging as a hub for energy and climate focused startups due to its vicinity to energy giants, which represent potential customers. Texas leads the country in renewable energy production and sits at the forefront of the transition. Energy companies based in this region are relying on technology innovation and software tools to modernize operations and meet the evolving demands of their customers.

———

This conversation has been edited for brevity and clarity.

A Houston investor is looking to target high-potential hardtech startups within the energy transition with his new venture studio. Photo via Getty Images

Houston investor launches energy transition venture studio to help elevate early-stage hardtech startups

money moves

The way Doug Lee looks at it, there are two areas within the energy transition attracting capital. With his new venture studio, he hopes to target an often overlooked area that's critical for driving forward net-zero goals.

Lee describes investment activity taking place in the digital and software world — early stage technology that's looking to make the industry smarter. But, on the other end of the spectrum, investment activity can be found on massive infrastructure projects.

While both areas need funding, Lee has started his new venture studio, Flathead Forge, to target early-stage hardtech technologies.

“We are really getting at the early stage companies that are trying to develop technologies at the intersection of legacy industries that we believe can become more sustainable and the energy transition — where we are going. It’s not an ‘if’ or ‘or’ — we believe these things intersect,” he tells EnergyCapital.

Specifically, Lee's expertise is within the water and industrial gas space. For around 15 years, he's made investments in this area, which he describes as crucial to the energy transition.

“Almost every energy transition technology that you can point to has some critical dependency on water or gas,” he says. “We believe that if we don’t solve for those things, the other projects won’t survive.”

Lee, and his brother, Dave, are evolving their family office to adopt a venture studio model. They also sold off Azoto Energy, a Canadian oilfield nitrogen cryogenic services business, in December.

“We ourselves are going through a transition like our energy is going through a transition,” he says. “We are transitioning into a single family office into a venture studio. By doing so, we want to focus all of our access and resources into this focus.”

At this point, Flathead Forge has seven portfolio companies and around 15 corporations they are working with to identify their needs and potential opportunities. Lee says he's gearing up to secure a $100 million fund.

Flathead also has 40 advisers and mentors, which Lee calls sherpas — a nod to the Flathead Valley region in Montana, which inspired the firm's name.

“We’re going to help you carry up, we’re going to tie ourselves to the same rope as you, and if you fall off the mountain, we’re falling off with you,” Lee says of his hands-on approach, which he says sets Flathead apart from other studios.

Another thing that's differentiating Flathead Forge from its competition — it's dedication to giving back.

“We’ve set aside a quarter of our carried interest for scholarships and grants,” Lee says.

The funds will go to scholarships for future engineers interested in the energy transition, as well as grants for researchers studying high-potential technologies.

“We’re putting our own money where our mouth is,” Lee says of his thesis for Flathead Forge.

The undisclosed amount of funding will be used to continue Syzygy's work on it commercial-scale photoreactor. Photo via Syzygy

Houston cleantech co. secures investment from Mitsubishi

money moves

A Houston-based company that's created a photocatalytic reactor that uses light instead of heat to cleanly manufacture chemicals has announced its latest investor.

Syzygy Plasmonics announced a strategic investment agreement with Mitsubishi Heavy Industries Ltd., executed through Mitsubishi Heavy Industries America Inc. The terms of the deal were not disclosed, but Syzygy reports that the funding will go toward commercialization and development of its products.

"MHIA has been making moves to establish themselves as one of the leaders in the energy transition," Syzygy CEO Trevor Best says in a news release. "Formalizing our relationship with them shows their commitment to helping scale cutting edge technology and opens up new avenues for Syzygy and MHIA to work together as we commercialize our industrial decarbonization platform."

Currently, Rigel, the commercial-scale photoreactor, is being tested in Syzygy's Pearland facility. Founded based off a breakthrough discovery out of Rice University from co-founders and professors Naomi Halas and Peter Nordlander, Syzygy closed a $76 million series C financing round last year, a $23 million series B round in 2021, and its $5.8 series A in 2019.

The funding will support advancement and commercialization of the technology and is a part of Mitsubishi Heavy Industries Group's commitment to decarbonization.

"By collaborating with and investing in partners with innovative technologies, MHI Group is working to build a hydrogen ecosystem and a CO2 ecosystem that can contribute to the realization of a decarbonized society," the company writes in a statement. "Through this investment, Mitsubishi Heavy Industries will support Syzygy's efforts to develop innovative alternative technologies that will lead to the diversification of both ecosystems."

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8 Houston companies earn CleanTech Breakthrough Awards

winner, winners

Eight cleantech companies with Houston headquarters were recognized in this year’s CleanTech Breakthrough Awards program.

CleanTech Breakthrough, part of market intelligence platform Tech Breakthrough, honors innovative and influential energy, climate, and cleantech companies, products and services.

This year’s winners from Houston are:

  • CleanTech Analytics Company of the Year: Amperon, a provider of AI-powered energy forecasting software
  • Overall Hydrogen Solution of the Year: Eclipse Energy, which converts maxed-out oilfields into low-cost sources of hydrogen
  • Energy Production Company of the Year: Fervo Energy, a provider of geothermal power
  • Production Solution of the Year: Quaise Energy, a developer of a drilling system for converting traditional power stations into geothermal energy plants
  • Green Materials Solution of the Year: Solidec, which uses air, water, and electricity to produce chemicals
  • Hydrogen Production Solution of the Year: VEMA Hydrogen, a producer of renewable hydrogen
  • CleanTech Analytics Innovation Award: Finland-based Wärtsilä, a provider of advanced energy storage systems and services, which maintains its U.S. headquarters in Houston
  • Energy Production Platform of the Year: France-based energy giant TotalEnergies, which maintains its U.S. headquarters in Houston

Other Texas companies made the list, including Austin-headquartered Base Power, founded by Justin Lopas and Zach Dell. Zach Dell is the son of Austin billionaire and Houston native Michael Dell, chairman and CEO of Dell Technologies. The company recently started servicing Houston and established an office in Katy.

CleanTech Breakthrough says its annual awards program honors “the visionaries and leaders accelerating the transition to a cleaner, more sustainable future.”

“In a world increasingly focused on sustainability and environmental responsibility, innovation in clean technology has never been more critical,” said Bryan Vaughn, managing director of CleanTech Breakthrough. “This year’s winners represent the very best in ingenuity and execution, delivering solutions that not only reduce environmental impact but also drive efficiency, scalability and real-world results.”

See the full list of the 2026 winners here.

HETI's new executive director takes the helm

new leader

The Houston Energy Transition Initiative has a new executive director.

Sophia Cunningham assumed the position this month, succeeding the organization's founding executive director, Jane Stricker.

"Four years ago, I could never have imagined the opportunities, experiences and relationships this role has enabled," Strickler wrote in an address earlier this year. "I am truly grateful for the support and engagement of Houston’s business and community leaders, the visionary leadership of Bobby Tudor, Scott Nyquist, HETI Members, and the Greater Houston Partnership in creating this initiative at exactly the right moment in time. I am incredibly proud of the HETI and the Partnership team members who have delivered with purpose and passion, and I greatly appreciate Houston’s energy and climate leaders and champions who have supported my agenda, challenged my thinking, broadened my perspectives, and worked with HETI to demonstrate the power of partnership in developing, innovating and advancing the ideas and technologies needed to meet this challenge for our region and the world."

Stricker shared on LinkedIn that she has joined the advisory board of FluxPoint Energy, which launched last month during CERAWeek, in addition to her other roles at Greentown Labs, Prana Low Carbon Economy Investments and UNC Kenan-Flagler Energy Center.

Cunningham previously served as vice president at HETI, where she was responsible for efforts related to carbon capture, use and storage; methane management; community engagement and stakeholder activation. Before joining HETI, she was director of public policy at The Greater Houston Partnership.

She earned her master's in Energy Management and Systems Technology from Texas A&M University and holds a bachelor's degree from Davidson College.

“I’m honored to step into the role of Executive Director of the Houston Energy Transition Initiative at such a pivotal moment for our industry," Cunningham said over email. "Houston has the talent, infrastructure, and leadership to meet growing global energy demand while reducing emissions, and I’m excited to work alongside our members and partners to accelerate solutions that are reliable, affordable, and scalable.”

The Greater Houston Partnership launched HETI in June 2021 to "meet a Dual Challenge of producing more energy that the world needs with less emissions," according to its website.

Pattern Energy expands clean energy portfolio with acquisition of Canadian producer

acquisition closed

Clean energy and transmission infrastructure company Pattern Energy completed the acquisition of Canadian independent power producer Cordelio Power this month.

Pattern Energy, which is headquartered in San Francisco and has major operations in Houston, will now own one of the largest independent clean energy infrastructure platforms in North America, according to a release.

Pattern Energy will add approximately 1,550 megawatts of operating and in-construction assets, including 16 wind, solar and energy storage projects across the United States and Canada, as part of the deal. In addition, they have also acquired the majority of Cordelio’s development pipeline in key U.S. markets and members of Cordelio’s team.

“Closing this transaction marks a significant milestone for Pattern Energy as we continue to scale our platform to meet North America’s growing energy needs,” Hunter Armistead, CEO of Pattern Energy, said in the release. “Cordelio brings a highly complementary portfolio of quality assets and a talented team. Together, we are even better positioned to power the future.”

Currently, Pattern Energy’s portfolio includes wind, solar and energy storage projects in over 40 facilities in North America. Pattern Energy had 12,000 megawatts of operating and in-construction capacity before the deal.

The acquisition was first announced Jan. 6, 2025.

“Pattern and Cordelio share a commitment to responsible development and the communities in which we work,” Chris Hind, CEO of Cordelio Power, said in a news release. “We look forward to joining with Pattern Energy to deliver high-quality projects with expanded product offerings to support customers across more markets.”


Pattern Energy doubled down on its Houston commercial space in 2023, moving the company's development, meteorological, transmission and energy trading teams to a new office in the Montrose Collective. The company's Operations Control Center is also based in Houston.

Its Houston-based development team was assigned to work on Pattern's SunZia Transmission and Wind project in New Mexico and Arizona, expected to be one of the largest clean energy infrastructure projects in U.S. The project is targeting commercial operations this year, according to Pattern Energy's website.

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