20+ companies will pitch at Energy Tech Nexus' Pilotathon during Houston Energy & Climate Startup Week. Photo via Getty Images.

There is no sugar‑coating it: 2025 was a rough year for many climate tech founders. Headlines focused on policy rollbacks and IRA uncertainty, while total climate tech venture and growth investment only inched up to about 40.5 billion dollars, an 8% rise that felt more like stabilization than the 2021–2022 boom. Deal count actually fell 18% and investor participation dropped 19%, with especially steep pullbacks in carbon and transportation, as capital concentrated in fewer, larger, “safer” bets. Growth-stage funding jumped 78% while early-stage seed rounds dropped 20%.

On top of that, tariff battles and shifting trade rules added real supply‑chain friction. In the first half of 2025, solar and wind were still 91% of new U.S. capacity additions, but interconnection delays, equipment uncertainty, and changing incentive structures meant many projects stalled or were repriced mid‑stream. Founders who had raised on 2021‑style valuations and policy optimism suddenly found themselves stuck in limbo, extending runway or shutting down.

The bright spots were teams positioned at the intersection of climate and the AI power surge. Power demand from data centers is now a primary driver of new climate‑aligned offtake, pulling capital toward firm, 24/7 resources. Geothermal developers like Fervo Energy, Sage Geosystems and XGS did well. Google’s enhanced‑geothermal deal in Nevada scales from a 3.5 MW pilot to about 115 MW under a clean transition tariff, nearly 30× growth in geothermal capacity enabled by a single corporate buyer. Meta and others are exploring similar pathways to secure round‑the‑clock low‑carbon power for hyperscale loads.

Beyond geothermal, nuclear is clearly back on the strategic menu. In 2024, Google announced the first U.S. corporate nuclear offtake, committing to purchase 500 MW from Kairos Power’s SMR fleet by 2035, a signal that big tech is willing to underwrite new firm‑power technologies when the decarbonization and reliability story is compelling. Meta just locked in 6.6GW of nuclear capacity through deals with Vistra, Oklo, and TerraPower.

Growth investors and corporates are increasingly clustering around platforms that can monetize long‑duration PPAs into data‑center demand rather than purely policy‑driven arbitrage.

Looking into 2026, the same trends will continue:

Solar and wind

Even with policy headwinds, solar and wind continue to dominate new capacity. In the first half of 2025 they made up about 90% of new U.S. electricity capacity. Over the 2025–2028 period, FERC’s ‘high‑probability’ pipeline points to on the order of 90–93 GW of new utility‑scale solar and roughly 20–23 GW of new wind, far outpacing other resources.

Storage and flexibility

Solar plus batteries is now the default build—solar and storage together account for about 81% of expected 2025 U.S. capacity additions, with storage deployments scaling alongside renewables to keep grids flexible. Thermal storage and other grid‑edge flexibility solutions are also attracting growing attention as ways to smooth volatile load.

EVs and transport

EV uptake continues to anchor long‑term battery demand; while transportation funding cooled in 2025, EV sales and charging build‑out are still major components of clean‑energy demand‑side investment

Buildings

Heat pumps, smart HVAC, and efficient water heating are now the dominant vectors for building‑sector decarbonization. Heating and cooling startups alone have raised billions since 2020, with nearly 700 million dollars going into HVAC‑focused companies in 2024, and that momentum carried into 2025.

Hydrogen

The green hydrogen narrative has faded, but analysts still see hydrogen as essential for steel, chemicals, and other hard‑to‑abate sectors, with large‑scale projects and offtake frameworks under development rather than headline hype.

CCS/CCUS

After years of skepticism, more large CCS projects are finally reaching FID and coming online, helped by a mix of tax credits and industrial demand, which makes CCS look more investable than it did in the pre‑IRA era.

So, yes, 2025 was a downer from the easy‑money, policy‑euphoria years. But the signal beneath the noise is clear: capital is rotating toward technologies with proven unit economics, real offtake (especially from AI‑driven power loads), and credible paths to scale—not away from climate altogether.

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

Nada Ahmed. Courtesy photo

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.

Eight startups were given awards at Energy Tech Nexus' Pilotathon. Photo via Getty Images.

Energy Tech Nexus names 8 startup winners from Pilotathon pitch event

winner, winners

Energy Tech Nexus held its Pilotathon and Showcase during the second annual Houston Energy & Climate Startup Week last month and granted awards to eight startups.

This year's event, focused on the theme "Energy Access and Resilience," offered 24 startups an opportunity to pitch their pilot projects.

"At Energy Tech Nexus, we recognize that scaling breakthrough energy technologies requires more than just capital—it demands strategic pilot partnerships," Nada Ahmed, founding Partner of Energy Tech Nexus, said in a release. "The Pilotathon serves as that critical bridge, creating a dynamic platform where established industry leaders and emerging startups collaborate to accelerate the deployment of solutions that will define our energy future."

Companies selected to participate in the Pilotathon and others from Energy Tech Nexus' COPILOT accelerator pitched at the event.

The Pilotathon winners included:

  • Best Overall Pilot Pitch: New Jersey-based Metal Light Inc., which is building a circular, solid metal fuel that will serve as a replacement for diesel fuel
  • Best Commercial Readiness Award: Oregon-based Espiku Inc. and Calgary-based Serenity Power. Espiku designs and develops water treatment and mineral extraction technologies that rely on low-pressure evaporative cycles. Serenity Power has developed a cutting-edge solid oxide fuel cell (SOFC) technology.
  • Corporate Partners Choice Award: California-based Rushnu, which has developed its modular CarbonCatalyze™ units that generate carbon-negative feedstock and is producing valuable chemicals from CO2 and salt at wastewater treatment sites.
  • People’s Choice Award for Best Startup Showcase: Houston-based Resin8, an AI-powered marketplace for industrial assets and heavy equipment

The COPILOT winners included:

  • Best Overall Pilot Pitch: Wisconsin-based V-Glass, which has developed a next-generation, vacuum-insulated glass
  • Energy Resilience Champion Award: Phoenix-based EnKoat, which is creating advanced material solutions to decarbonize buildings
  • Energy Access Award: Dallas-based Janta Power, which is developing 3D solar towers
  • Most Impactful Pilot: Houston-based PolyQor, which converts plastic waste into high-performing construction materials
COPILOT partners with Browning the Green Space, a nonprofit that promotes diversity, equity and inclusion (DEI) in the clean energy and climatetech sectors. The Wells Fargo Innovation Incubator (IN²) at the National Renewable Energy Laboratory backs the COPILOT accelerator, where companies are tasked with developing pilot projects for their innovations. Read more about the inaugural cohort here.
EnergyTech Nexus will move into Greentown Labs and plans to open an investor lounge on-site. Photo courtesy Greentown Labs.

Greentown and EnergyTech Nexus announce ecosystem partnership

green team

Two of Houston’s leading energy transition organizations are joining forces.

Climatetech incubator Greentown Labs and founder community EnergyTech Nexus announced a "strategic ecosystem partnership," aimed at accelerating growth for clean energy startups. EnergyTech Nexus will move into Greentown Labs and plans to open an investor lounge on-site.

“Greentown Labs is the nexus for the energy transition, where startups can gather, collaborate and grow. Positioning our own extended community within the hallowed walls of Greentown will further foster the creation of authentic connections between founders and reduce friction to critical resources, bringing the village together will only accelerate the flywheel on innovation here in Houston, Texas,” Jason Ethier, EnergyTech Nexus founding partner, said in a news release.

Additionally, EnergyTech Nexus will launch Cephyron IRM, an AI-driven investor platform that will help founders of early-stage technologies connect with sources of capital. Greentown members will be granted early access to the platform.

According to the organizations, the ecosystem partnership represents years of collaboration. Ethier, whose startup Dynamo Micropower was one of the first to join Greentown's Cambridge, Massachusetts, incubator, previously served on Greentown's board of directors and in other leadership positions. He and Juliana Garaizar, a fellow founding partner of EnergyTech Nexus, were also instrumental in bringing Greentown Labs to Houston. Garaizar has also held numerous leadership roles at Greentown Houston.

“This partnership has been a long time coming—our organizations are kindred spirits that need to be working together to enhance the entrepreneurial support systems available to climate innovators in Houston,” Lawson Gow, Greentown’s Head of Houston, added in the release. “Capital is a top priority for climate and energy founders, and this team-up will directly address this challenge.”

20-plus companies will pitch at Energy Tech Nexus' Pilotathon during Houston Energy & Climate Startup Week. Photo via Getty Images.

Energy Tech Nexus announces international startups to pitch at Pilotathon

Ready, Set, Pitch

Energy Tech Nexus will host its Pilotathon and Showcase as part of Houston Energy & Climate Startup Week next Tuesday, Sept. 16, featuring insightful talks from industry leaders and pitches from an international group of companies in the clean energy space.

This year's event will center around the theme "Energy Access and Resilience." Attendees will hear pitches from nine Pilotathon pitch companies, as well as the 14 companies that were named to Energy Tech Nexus' COPILOT accelerator earlier this year.

COPILOT partners with Browning the Green Space, a nonprofit that promotes diversity, equity and inclusion (DEI) in the clean energy and climatetech sectors. The Wells Fargo Innovation Incubator (IN²) at the National Renewable Energy Laboratory backs the COPILOT accelerator, where companies are tasked with developing pilot projects for their innovations.

The nine Pilotathon pitch companies include:

  • Ontario-based AlumaPower, which has developed a breakthrough technology that converts the aluminum-air battery into a "galvanic generator," a long-duration energy source that runs on aluminum as a fuel
  • Calgary-based BioOilSolv, a chemical manufacturing company that has developed cutting-edge biomass-derived solvents
  • Atlanta-based Cultiv8 Fuels, which creates high-quality renewable fuel products derived from hemp
  • Newfoundland-based eDNAtec Inc., a leader in environmental genomics that analyzes biodiversity and ecological health
  • Oregon-based Espiku Inc., which designs and develops water treatment and mineral extraction technologies that rely on low-pressure evaporative cycles
  • New York-based Fast Metals Inc., which has developed a chemical process to extract valuable metals from complex toxic mine tailings that is capable of producing iron, aluminum, scandium, titanium and other rare earth elements using industrial waste and waste CO2 as inputs
  • New Jersey-based Metal Light Inc., which is building a circular, solid metal fuel that will serve as a replacement for diesel fuel
  • Glasgow-based Novosound, which designs and manufactures innovative ultrasound sensors using a thin-film technique to address the limitations of traditional ultrasound with applications in industrial, medical and wearable markets
  • Calgary-based Serenity Power, which has developed a cutting-edge solid oxide fuel cell (SOFC) technology

The COPILOT accelerator companies include:

  • Accelerate Wind
  • Aquora Biosystems Inc.
  • EarthEn
  • Electromaim
  • EnKoat
  • GeoFuels
  • Harber Coatings Inc.
  • Janta Power
  • NanoSieve
  • PolyQor Inc.
  • Popper Power
  • Siva Powers America
  • ThermoShade
  • V-Glass Inc.

Read more about them here.

The Pilotathon will also include a keynote from Taylor Chapman, investment manager at New Climate Ventures; Deanna Zhang, CEO at V1 Climate Solutions; and Jolene Gurevich, director of fellowship experience at Breakthrough Energy. The Texas Climate Tech Collective will present its latest study on the Houston climate tech and innovation ecosystem.

CEOs Moji Karimi of Cemvita, Laureen Meroueh of Hertha Metals and others will also participate in a panel on successful pilots. Investors from NetZero Ventures, Halliburton Labs, Chevron, Saudi Aramco, Prithvi VC and other organizations will also be on-site. Find registration information here.


The insurance crisis is reverberating across the nation. Photograph by Geoffrey George/Getty Images

Capitalism and climate: How financial shifts will shape our behavior

guest column

I never imagined I would see Los Angeles engulfed in flames in this way in my lifetime. As someone who has devoted years to studying climate science and advocating for climate technology solutions, I'm still caught off guard by the immediacy of these disasters. A part of me wants to believe the intensifying hurricanes, floods, and wildfires are merely an unfortunate string of bad luck. Whether through misplaced optimism or a subconscious shield of denial, I hadn't fully processed that these weren't just harbingers of a distant future, but our present reality. The recent fires have shattered that denial, bringing to mind the haunting prescience of the movie Don't Look Up. Perhaps we aren't as wise as we fancy ourselves to be.

The LA fires aren't an isolated incident. They're part of a terrifying pattern: the Canadian wildfires that darkened our skies, the devastating floods in Spain and Pakistan, and the increasingly powerful hurricanes in the Gulf. A stark new reality is emerging for climate-vulnerable cities, and whether we acknowledge the underlying crisis or not, climate change is making its presence felt – not just in death and destruction, but in our wallets.

The insurance industry, with its cold actuarial logic, is already responding. Even before the recent LA fires, major insurers like State Farm and Allstate had stopped writing new home policies in California, citing unmanageable wildfire risks. In the devastated Palisades area, 70% of homes had lost their insurance coverage before disaster struck. While some homeowners may have enrolled in California's limited FAIR plan, others likely went without coverage. Now, the FAIR plan faces $5.9 billion in potential claims, far exceeding its reinsurance backup – a shortfall that promises delayed payments and costlier coverage.

The insurance crisis is reverberating across the nation, and Houston sits squarely in its path. As a city all too familiar with the destructive power of extreme weather, we're experiencing our own reckoning. The Houston Chronicle recently reported that local homeowners are paying a $3,740 annually for insurance – nearly triple the national average and 60% higher than the Texas state average. Our region isn't just listed among the most expensive areas for home insurance; it's identified as one of the most vulnerable to climate hazards.

For Houston homeowners, Hurricane Harvey taught us a harsh lesson: flood zones are merely suggestions, not guarantees. The next major hurricane won't respect the city's floodplain designations. This reality poses a sobering question: Would you risk having your largest asset – your home – uninsured when flooding becomes increasingly likely in the next decade or two?

For most Americans, home equity represents one of the largest components of household wealth, a crucial stepping stone to financial security and generational advancement. Insurance isn't just about protecting physical property; it's about preserving the foundation of middle-class economic stability. When insurance becomes unavailable or unaffordable, it threatens the very basis of financial security for millions of families.

The insurance industry's retreat from vulnerable markets – as evidenced by Progressive and Foremost Insurance's withdrawal from writing new policies in Texas – is more than a business decision. It's a market signal. These companies are essentially pricing in the reality of climate change, whether we choose to call it that or not.

What we're witnessing is the market beginning to price us out of areas where we've either built unsustainably or perhaps should never have built at all. This isn't just about insurance rates; it's about the future viability of entire communities and regional economies. The invisible hand of the market is doing what political will has failed to do: forcing us to confront the true costs of our choices in a warming world.

Insurance companies aren't the only ones sounding the alarm. Lenders and investors are quietly rewriting the rules of capital access based on climate risk. Banks are adjusting mortgage terms and raising borrowing costs in vulnerable areas, while major investment firms are factoring carbon intensity into their lending decisions. Companies with higher environmental risks have faced higher loan spreads and borrowing costs – a trend that's accelerating as climate impacts intensify. This financial reckoning is creating a new economic geography, where access to capital increasingly depends on climate resilience.

The insurance crisis is the canary in the coal mine, warning us of the systemic risks ahead. As actuaries and risk managers factor climate risks into their models, we're seeing the beginning of a profound economic shift that will ripple far beyond housing, affecting businesses, agriculture, and entire regional economies. The question isn't whether we'll adapt to this new reality, but how much it will cost us – in both financial and human terms – before we finally act.

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

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Baker Hughes teams up with Oklahoma co. to advance geothermal development

geothermal partnership

In recent months, Houston-based energy corporation Baker Hughes has launched multiple partnerships to expand geothermal energy extraction across the United States. The latest, a deal with Oklahoma-based Helmerich & Payne Inc. (H&P), was announced Wednesday.

As part of the deal, H&P will provide a geothermal-capable land drilling rig, while Baker Hughes will contribute technology and expertise. The rig is expected to be deployed later this year, according to a news release.

“Geothermal energy plays a critical role in meeting growing power demand by providing clean, reliable baseload generation,” Amerino Gatti, executive vice president of oilfield services & equipment for Baker Hughes, said in the release. “This collaboration reflects a deliberate step to move its development in the U.S. from concept to reality. By working together, Baker Hughes and Helmerich & Payne are helping customers advance these critical energy projects with greater confidence and deliver reliable, sustainable power.”

Investment in the geothermal energy sector is currently exploding in the U.S., having grown by at least 1,000 percent just in the last seven years, according to a recent report by Rocky Mountain Institute.

On one hand, only about 1 percent of the American energy grid currently uses geothermal, but on the other, the U.S. holds roughly 25 percent of the world’s geothermal capacity. Harnessing that power becomes even more attractive as conflicts in Russia and Iran continue to hamstring energy markets from those countries and revitalize interest in renewable energy.

Baker Hughes has been at the forefront of the geothermal boom. This new deal with H&P combines H&P’s drilling platform technology with Baker Hughes’s subsurface and energy extraction support technologies.

“This agreement underscores Helmerich & Payne’s commitment to supporting emerging energy opportunities through our drilling technologies and operational expertise,” H&P President and CEO Trey Adams added in the release. “We are pleased to collaborate with Baker Hughes to support the advancement of geothermal development in the United States.”

The deal with H&P is just one of several recent ones Baker Hughes has closed. In March, they announced support for XGS’s geothermal extraction projects in New Mexico, which are being used to meet the increasing demands of data centers in the state. Last May, Fervo Energy selected Baker Hughes to supply equipment for its flagship geothermal project in Utah.

Houston renewables developer signs agreement with Meta for new solar project

power deal

Houston-based EDP Renewables North America has signed a long-term power purchase agreement with Meta, the parent company of Facebook and Instagram, for its forthcoming Cypress Knee Solar project.

The 250‑megawatt solar project will be built in Arkansas and is expected to come online by 2028, according to a news release from EDPR. The company says the project will generate approximately $25 million in new revenue for Chicot County once operational.

“Cypress Knee Solar and our broader portfolio of projects with Meta are helping power a reliable, modern U.S. electric grid—the backbone of American innovation and long-term economic growth,” Sandhya Ganapathy, CEO of EDPR NA, said in the release. “These investments strengthen local communities, create durable economic value, and ensure that progress is built on a resilient, sustainable foundation.

This is Meta's third power purchase agreement with EDPR. The tech giant is now contracted to a renewable capacity of 545 megawatts with EDPR. Meta and EDPR also collaborated on the 200-megawatt Brittlebush Solar Park to support Meta's data center in Mesa, Arizona.

“Through our partnership with EDPR, Cypress Knee Solar will bring new generation to the Arkansas grid, creating local jobs and delivering economic benefits to the community. We’re proud to expand our collaboration with EDPR,” Amanda Yang, head of clean and renewable energy at Meta, added in the release.

EDPR operates 61 wind farms, 29 solar parks and four energy storage sites across North America. Its other customers include other tech companies like Amazon and Microsoft.

Buoyed by $1.3B sales backlog, microgrid company ERock files for IPO

eyeing ipo

Another energy company in Houston is going public amid a flurry of energy IPOs.

Houston-based ERock Inc., which specializes in utility-grade onsite microgrid systems for data centers and other customers, has filed paperwork with the U.S. Securities and Exchange Commission (SEC) to sell its shares on the New York Stock Exchange.

The ERock filing follows the recent $1.9 billion IPO of Houston-based Fervo Energy, a provider of geothermal power that’s now valued at $7.7 billion.

Another Houston energy company, EagleRock Land, just went public in a $320 million IPO that values the company at $3 billion. EagleRock owns or controls about 236,000 acres in the Permian Basin, earning money from royalties, fees, easements, water services and other revenue streams tied to drilling on its land.

According to Barron’s, more than a dozen energy and energy-related companies in the U.S. have gone public since the beginning of 2025, with the bulk of the IPOs happening this year.

ERock’s SEC filing doesn’t identify the per-share pricing range for the IPO or the number of Class A shares to be offered. ERock is a portfolio company of Energy Impact Partners, a New York City-based venture capital and private equity firm that invests in energy companies.

The company previously did business as Enchanted Rock. ERock Inc., formed in January, will function as a holding company that controls predecessor company ER Holdings Ltd.

In 2025, ERock generated revenue of $183.1 million, up 42.5 percent from the previous year, according to the IPO filing. It recorded a net loss of $59 million last year.

As of March 31, ERock boasted a sales backlog of nearly $1.3 billion, up 779 percent on a year-over-year basis. The company attributes most of that increase to greater demand from data centers.

The company primarily serves the power needs of data centers, utilities, industrial facilities, and commercial buildings. Its biggest markets are Texas and California.

“Several U.S. markets, such as Texas and California, face especially acute reliability risks,” ERock says in the SEC filing. “Texas already shows rapid load-growth pressures tied to data centers and industrial expansion, while California faces grid congestion, long interconnection queues, and above-average vulnerability to extreme heat- and weather-driven outages.”

Since its founding in 2018, ERock has installed microgrid systems at more than 400 sites with a capacity of about 1,000 megawatts. Customers include ComEd, Foxconn, H-E-B, Microsoft and Walmart.

By the end of this year, the company plans to expand its production of microgrid systems to a capacity of about 1.2 gigawatts with the opening of its Hyperion facility in Houston.

John Carrington leads ERock as CEO. He joined ER Holdings last year as chairman and CEO. Carrington previously was CEO of Houston-based Stem, a public company that offers AI-enabled clean energy software and services. Earlier, he spent 16 years at General Electric.