Green banking meets evergreen R&D with recent MOU

MONEY + MATTER

The convergence of green banking with evergreen experimentation in support of a growing green economy sounds like just the right shade of green. Photo by micheile henderson/Unsplash

The term “Energy Transition” doesn’t merely imply change, it demands it. And with change comes another kind of change–usually of the dollars and cents kind.

While many aspire to embrace more sustainable and cleaner energy solutions in their communities, the affluence needed to deploy necessary infrastructure often sits just outside of reach. Until now, that is.

With the rise of “green banking,” securing financing for the adoption of energy efficiency, implementation of decarbonization technologies, and broader provision of renewable energy is now more accessible. Funds at green banks, backed by a blend of public and philanthropic contributions, tap into the modern trend of crowdfunding to support egalitarian and climate improvement efforts.

However, green bank financing is structured with repayment of–or a return on–capital expected at the end of the term, meaning approval tends only to be granted to proven and established projects well past the research and development stage. Given the Energy Transition is, for the most part, still in its infancy, clearing such hurdles can be difficult.

But Houston is full of dreamers and doers; researchers and entrepreneurs eager to tackle the next big challenge. It would come as no surprise then, that Texas’ first green bank, the Clean Energy Fund of Texas (“CEFTx”), bucks tradition with a novel Memorandum Of Understanding (“MOU”) co-signed by the Houston Advanced Research Center (“HARC”) to finance efforts staunchly entrenched in R&D activity.

As the Energy Transition foothold grows, Houstonians are compelled not just to invest in green initiatives, but to drive them. Which only makes sense, considering the deep expertise in energy innovation led most recently by the Houston-area shale revolutionaries from Mitchell Energy. Established over 40 years ago by George P. Mitchell himself, HARC plants the seeds of transformation at the intersection of science, resilience, sustainability, and the environment.

Per the March 29 news release from CEFTx, John Hall, President & CEO of HARC says, “We are excited to join forces with the team at Clean Energy Fund of Texas as they drive green investment in low-income and disadvantaged communities. Our research expertise and experience in managing state and federal grants will be a true benefit to Texans.”

The recent MOU brings Energy Transition visionaries the capital necessary to explore, test, develop, and deploy innovative solutions from conception to maturity. Entrepreneurs at all stages of the business lifecycle are encouraged to apply for funding on the CEFTx website or connect with HARC at an upcoming event to discover how the two entities can take ideas from dream to reality.

“It’s an honor to work with the esteemed researchers at HARC, who have been studying sustainability for decades,” says Stephen Brown of CEFTx in the release. “Together we can be even more effective at kickstarting investments in solar power, retrofits, and other technologies that help create the green workforce of tomorrow.”

The fresh approach to funding set up by CEFTx and HARC positions new companies to succeed and enables existing companies to progress in the transition to a more sustainable #futureofenergy. It’s just the sort of sense that is needed to truly drive change.

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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.

Houston maritime startup raises $43M to electrify cargo vessels

A Houston-based maritime technology company that is working to reduce emissions in the cargo and shipping industry has raised VC funding and opened a new Houston headquarters.

Fleetzero announced that it closed a $43 million Series A financing round this month led by Obvious Ventures with participation from Maersk Growth, Breakthrough Energy Ventures, 8090 Industries, Y Combinator, Shorewind, Benson Capital and others. The funding will go toward expanding manufacturing of its Leviathan hybrid and electric marine propulsion system, according to a news release.

The technology is optimized for high-energy and zero-emission operation of large vessels. It uses EV technology but is built for maritime environments and can be used on new or existing ships with hybrid or all-electric functions, according to Fleetzero's website. The propulsion system was retrofitted and tested on Fleetzero’s test ship, the Pacific Joule, and has been deployed globally on commercial vessels.

Fleetzero is also developing unmanned cargo vessel technology.

"Fleetzero is making robotic ships a reality today. The team is moving us from dirty, dangerous, and expensive to clean, safe, and cost-effective. It's like watching the future today," Andrew Beebe, managing director at Obvious Ventures, said in the news release. "We backed the team because they are mariners and engineers, know the industry deeply, and are scaling with real ships and customers, not just renderings."

Fleetzero also announced that it has opened a new manufacturing and research and development facility, which will serve as the company's new headquarters. The facility features a marine robotics and autonomy lab, a marine propulsion R&D center and a production line with a capacity of 300 megawatt-hours per year. The company reports that it plans to increase production to three gigawatt-hours per year over the next five years.

"Houston has the people who know how to build and operate big hardware–ships, rigs, refineries and power systems," Mike Carter, co-founder and COO of Fleetzero, added in the release. "We're pairing that industrial DNA with modern batteries, autonomy, and software to bring back shipbuilding to the U.S."

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