Kelsey Kearns (right), the new director of Greentown Houston, shared her takeaways from her first-ever CERAWeek with Energy Capital HTX. Photo courtesy Greentown

My first CERAWeek was a blur.

Having top energy executives, policymakers, and technologists all gathered in Houston—over 11,000 of them this year—was both overwhelming and energizing. The theme was “Convergence and Competition: Energy, Technology, and Geopolitics,” and walking through the George R. Brown Convention Center, it was immediately clear that this was no ordinary industry conference.

As a first-timer with a Greentown Labs lens, here’s what really stuck with me.

Disruption is the new normal

CERAWeek 2026 was set against the backdrop of conflict in the Middle East, the continued race to power AI, and a clear throughline: disruption is increasingly the new normal. You could feel it in every hallway conversation. The ongoing conflict in the Middle East, specifically Iran’s attacks on Qatar’s Ras Laffan facility and the closure of the Strait of Hormuz, affected roughly 20% of the world’s liquified natural gas supply, and that was woven into nearly every conversation throughout the week.

Secretary of Energy Chris Wright opened the conference with “Energy is life,” then quickly turned to natural gas. “America’s superpower is natural gas,” he said, pointing to its role in industry, heat, electricity, fertilizer, exports, and leading AI and manufacturing. That set the tone early and it never really shifted.

AI is still everywhere, but the conversation has shifted

No surprise that AI dominated the agenda. But what struck me as a first-timer was how much the conversation had matured. The AI discussion has moved from general enthusiasm to a much more practical focus on real use cases and measurable outcomes.

NVIDIA, Anthropic, and CyrusOne joined the established tech presences of Microsoft, Google, and AWS, occupying the Innovation Agora’s new AI Hub, which displaced the hydrogen hub from prior years. That detail alone tells you something about where the energy conversation has shifted. Annual global investment in data centers reached $771 billion in 2025, nearly on par with oil and gas ($835 billion) and renewable energy ($798 billion). We are not talking about a niche technology story anymore. This is a capital story, an infrastructure story, and an energy story all at once.

The prevailing tone was uncertain; the gap between what is being announced and what can actually be delivered was the subtext of almost every conversation. Transmission takes over a decade to build. The new generation takes five to nine years. AI infrastructure moves on three-to-five-year timelines. The math doesn’t work yet, and everyone is aware.

Pitch competitions still draw crowds

The Energy Venture Day and Pitch Competition at the McKinney Balcony was one of my favorite events of the week. Seeing Greentown members on that stage never gets old, but what really energized me was the broader mix: students, new founders, and veteran entrepreneurs in one space, all talking about how what they’re building is going to impact the world. S&P Global launched the NextGen cohort with 100+ graduate students from around the country getting a front-row seat to the energy sector.

Geothermal may have stolen the show

If I had to pick the most surprising theme of my first CERAWeek, it was geothermal. It drew the most consistent endorsement of the week, with Department of Energy representatives, oil and gas majors, and operators broadly aligned on its potential. Project InnerSpace hosted a dedicated Geothermal House for the first time, launching a standardized resource classification framework with the Society of Petroleum Engineers and an XPRIZE collaboration targeting surface-plant supply chain breakthroughs. For a sector that has lived in the shadows of wind and solar for years, CERAWeek 2026 was geothermal’s time to shine.

Wow, was I impressed with Melanie Nakagawa

Melanie Nakagawa, chief sustainability officer at Microsoft, delivered an impressive keynote during her fireside chat with Brad Burke. Her depth of experience, from the U.S. Department of State and venture capital to her current role at Microsoft, was matched only by her calm, hopeful demeanor. Leaders like her at the helm of climate action inspire genuine confidence in the future.

What about hydrogen?

Hydrogen was notably absent from the main stage. The AI Hub in the Innovation Agora displaced the hydrogen hub that had been a fixture in prior years. Seems like hydrogen still plays a role, but not as quickly or broadly as hoped. Blue hydrogen is moving forward cautiously. It wasn’t gone from the conversation entirely, but it no longer commands the room.

The label problem isn’t going away

Politics continues to polarize the industry. Climatetech, sustainability, cleantech — some labels carry broad objectives, others have become tribal signals. “Energy transition” for some means a replacement of fossil fuels; for others, it means an evolution across multiple dimensions simultaneously. CERAWeek 2026 showed an industry increasingly focused not on feel-good narratives about the future of energy, but on the harder questions of security, buildout, reliability, affordability, and competitiveness. A pragmatic shift may be the best answer to the label problem.

Collaboration isn’t optional—it’s strategic

The energy transition is no longer primarily an environmental story. It has become a technology and national competitiveness story. The problems are too big for any one company, sector, or country to solve alone. From incubators and investors to utilities and hyperscalers, the message was consistent all week: move together or we don’t move. S&P Global introduced “The Bridge,” a new venue specifically for energy-tech crossover conversations: a small but meaningful signal that even the conference organizers recognize that collaboration will get us further.

The scale and the energy in the room (pun intended) are what stood out most from my first CERAWeek. The industry knows what needs to get built. The question now is whether we can work together to build it fast enough.

See you next year, CERAWeek.

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Kelsey Kearns is director of Greentown Houston with more than a decade of experience in the technology sector. She served as director of community strategy for Greentown Houston from September 2025 to February 2026. Before that, she was director of business development for Howdy.com.

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Houston energy transition hub opens applications for new fundraising cohort

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EnergyTech Cypher has opened applications for its second Liftoff fundraising program.

Applications close May 20 for the 10-week virtual fundraising sprint. The program is geared toward energy and climatech founders preparing to raise their first institutional round. It will cover fundraising requisites, like pitch materials, term sheet negotiation and round closing, according to a release from EnergyTech Cypher.

The program kicks off June 1 and runs every Monday from 1-3 p.m. CST. It will conclude with an in-person capstone simulation in Houston on August 3, where founders will work to close a mock round.

Jason Ethier, EnergyTech Cypher founder and CEO, will lead the program with Payal Patel, an EnergyTech fellow and entrepreneur in residence.

The program is available through Cephyron, EnergyTech Cypher's new investor relationship management platform, built specifically for energy and climatech founders. Users must have a Cephyron Boost membership to participate in the Liftoff program.

The Cephyron IRM app recently went live and is available to founders at any point in their fundraising process, according to the news release. The platform aggregates investor data, tracks market signals and delivers curated weekly recommendations.

EnergyTech Cypher launched Liftoff last year. The inaugural cohort included 19 startups, including Houston-based AtmoSpark Technologies, The Woodlands-based Resollant and others. Each participant closed at least one fundraising deal, according to EnergyTech Cypher.

EnergyTech Cypher rebranded from EnergyTech Nexus earlier this year. It also launched its CoPilot accelerator in 2025. The inaugural group presented its first showcase during CERAWeek last month.

EnergyTech Cypher's annual Pilotathon Pilot Pitch and Showcase applications also opened this month. Find more information here.

Houston climatech startup raises $29M funding round​

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Houston-based NanoTech Materials has closed a $29.4 million Series A.

The round was led by Austin-based HPI Real Estate & Investments. Houston-based Goose Capital and Austin-based Milliken & Company also participated.

Nanotech has developed its patented Insulative Ceramic Particle (ICP) technology, which reduces heat transfer in buildings and outdoor infrastructure, improving efficiency and safety. It's known for its Cool Roof Coat, Wildfire Shield and Insulative Coat: Cool Touch product lines.

With the new funding, Nanotech plans to scale operations and expand its market reach for its products.

“We’re addressing one of the pressing and urgent challenges facing infrastructure owners today: controlling energy costs and extending asset life,” Mike Francis, CEO and co-founder of NanoTech Materials, said in a news release. “This financing marks a transformative moment for us. It allows us to rapidly scale production and bring our high-performance materials to market faster, while delivering measurable cost savings and redefining what resilience looks like in today’s built environment.”

Nanotech launched in 2020 and was the first company selected for Halliburton Labs. It moved into a 43,000-square-foot space in Katy in 2023. It brought on new partners that expanded the company's reach in the Middle East and Singapore the following year. Its technology was recognized as one of Time magazine's 200 Best Inventions of 2024.

“We were early investors in Nanotech Materials and are pleased to continue supporting the company as it becomes a leader in breakthrough materials science and technology,” John Chaney, investor at Goose Capital and board member at NanoTech, added in the release. “NanoTech’s ability to elevate fire resilience and energy efficiency in the built environment is critical for strengthening and hardening infrastructure. Its pioneered approach is transforming current building standards and making our lives safer.”

The company has secured $34.4 million in total to date, according to the release. It raised an oversubscribed funding round in 2023 and a $5 million seed round in 2020.

Houston clean energy startup acquired by battery storage company FlexGen

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A North Carolina company has acquired Houston-based Clean Energy Services, a provider of services for battery energy storage systems and utility-scale solar, for an undisclosed amount.

The buyer is Durham, North Carolina-based FlexGen Power Systems, a provider of battery energy storage software and services.

Clean Energy Services (CES), whose offices are at the Ion, will operate as a subsidiary of FlexGen. Existing CES customers will continue to receive services from CES without disruption or change, FlexGen says.

“Demand for reliable, high-performance power is accelerating, and customers need partners who can deliver at scale,” Kelcy Pegler, CEO of FlexGen, said in a news release. “The addition of CES strengthens our service platform and reinforces our leadership in energy storage technology.”

Ahmad Atwan and Constantine Triantafyllides co-founded CES in 2022. As a startup, CES had raised $8 million in venture capital, according to PitchBook.

“CES has achieved a market leadership position in battery storage services by focusing on reliable speed of service delivery and optimizing asset performance,” Atwan, the company’s CEO, added the release. “FlexGen and CES have been strong partners for years, and this transaction enables us to deliver more robust solutions across a complementary set of customers and markets.”

CES will continue to operate its remote operations center in Houston for over 1 gigawatt of solar assets and 4.5 gigawatt-hours of battery assets, while FlexGen will maintain its remote operations center in Durham.