Sage Geosystems has raised a $97 million Series B. Photo via sagegeosystems.com.

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.

Sage Geosystems and Fervo Energy were among the top five on LexisNexis's 10 Most Innovative Startups in Texas report. Photo via sagegeosystems.com

3 Houston energy companies rank among most innovative startups in Texas

report card

Three Houston companies claimed spots on LexisNexis's 10 Most Innovative Startups in Texas report, with two working in the geothermal energy space.

Sage Geosystems claimed the No. 3 spot on the list, and Fervo Energy followed closely behind at No. 5. Fintech unicorn HighRadius rounded out the list of Houston companies at No. 8.

LexisNexis Intellectual Property Solutions compiled the report. It was based on each company's Patent Asset Index, a proprietary metric from LexisNexis that identifies the strength and value of each company’s patent assets based on factors such as patent quality, geographic scope and size of the portfolio.

Houston tied with Austin, each with three companies represented on the list. Caris Life Sciences, a biotechnology company based in Dallas, claimed the top spot with a Patent Asset Index more than 5 times that of its next competitor, Apptronik, an Austin-based AI-powered humanoid robotics company.

“Texas has always been fertile ground for bold entrepreneurs, and these innovative startups carry that tradition forward with strong businesses based on outstanding patent assets,” Marco Richter, senior director of IP analytics and strategy for LexisNexis Intellectual Property Solutions, said in a release. “These companies have proven their innovation by creating the most valuable patent portfolios in a state that’s known for game-changing inventions and cutting-edge technologies.We are pleased to recognize Texas’ most innovative startups for turning their ideas into patented innovations and look forward to watching them scale, disrupt, and thrive on the foundation they’ve laid today.”

This year's list reflects a range in location and industry. Here's the full list of LexisNexis' 10 Most Innovative Startups in Texas, ranked by patent portfolios.

  1. Caris (Dallas)
  2. Apptronik (Austin)
  3. Sage Geosystems (Houston)
  4. HiddenLayer (Austin)
  5. Fervo Energy (Houston)
  6. Plus One Robotics (San Antonio)
  7. Diligent Robotics (Austin)
  8. HighRadius (Houston)
  9. LTK (Dallas)
  10. Eagle Eye Networks (Austin)

Sage Geosystems has partnered on major geothermal projects with the United States Department of Defense's Defense Innovation Unit, the U.S. Air Force and Meta Platforms. Sage's 3-megawatt commercial EarthStore geothermal energy storage facility in Christine, Texas, was expected to be completed by the end of last year.

Fervo Energy fully contracted its flagship 500 MW geothermal development, Cape Station, this spring. Cape Station is currently one of the world’s largest enhanced geothermal systems (EGS) developments, and the station will begin to deliver electricity to the grid in 2026. The company was recently named North American Company of the Year by research and consulting firm Cleantech Group and came in at No. 6 on Time magazine and Statista’s list of America’s Top GreenTech Companies of 2025. It's now considered a unicorn, meaning its valuation as a private company has surpassed $1 billion.

Meanwhile, HighRadius announced earlier this year that it plans to release a fully autonomous finance platform for the "office of the CFO" by 2027. The company reached unicorn status in 2020.

Here are all the events on CERAWeek's Agora track you can't miss if learning more about Houston energy innovation is your goal. Staff photo

Here are 20+ CERAWeek 2025 events featuring Houston energy leaders

where to be

CERAWeek 2025 will host more than 1,400 speakers at its annual energy-focused conference taking place March 10-14, with many hailing from Houston.

Under this year's theme, "Moving Ahead: Energy strategies for a complex world,” panels will tackle topics ranging from policy and regulation, geopolitics, power, grid, and electrification, AI and digital, managing emissions, and more.

Most of the innovation-themed events are organized under the Agora track and will feature many Houston-area startups, universities, companies, and scientists. Here are all the events on the Agora track you can't miss if you want to learn more about Houston energy innovation.

Transition in Action: Energy giants shaping a sustainable future

ExxonMobil's Senior Director, Climate Strategy & Technology Vijay Swarup will examine how major energy companies are driving energy transition goals along with panelists from S&P Global, Aramco Ventures and Gentari Sdn Bhd.

This panel is from 12:30-1 p.m. on Monday, March 10. More info here.

Syzygy Plasmonics | Deploying the World’s Most Economic Biogas to SAF Technology

Hear from Syzygy Plasmonics CEO Trevor Best about how the cleantech company's catalyst and reactor work and how the tools can dramatically reduce the cost of producing SAF from biogas from landfills, wastewater, and dairy farms.

This panel is from 2-2:30 p.m. on Monday, March 10. More info here.

Cemvita | The Future of Bioengineered Feedstocks: A Foresight Perspective

Cemvita CEO Moji Karimi will lead this panel.

This panel is from 4:30-5:15 p.m. on Monday, March 10. More info here.

Innovating with Purpose: Strengthening industrial-academic partnerships

David Dankworth, ExxonMobil's Hydrogen Technology Portfolio Manager, and Brian Korgel, the University of Texas Energy Institute Director, will be joined by leaders from MIT and S&P Global to discuss the crucial relationship between universities and industry in fostering purpose-driven innovation.

This panel is from 8:30–9 a.m. on Tuesday, March 11. More info here.

Solidec | Low-cost, Low-carbon Chemicals from Air

Solidec co-founder and CEO Ryan DuChanois will discuss how the company's approach to producing hydrogen peroxide and other key chemicals can be low-cost and low-carbon, creating a scalable path for a more sustainable chemical industry.

This panel is from 9-9:30 a.m. on Tuesday, March 11. More information here.

Collaboration Spotlight: The Carbon Hub: A public-private partnership leading the way to a sustainable carbon economy

Panelists from Rice University, Huntsman Advanced Materials, CERAWeek, The Kavli Foundation, and SABIC will discuss Rice's Carbon Hub's transformative power and what the future looks like for those creating this new carbon economy. Matteo Pasquali, the founding Director of the Carbon Hub, will be featured on the panel.

This panel is from 9:30-10 a.m. on Tuesday, March 11. More information here.

Rice University | Next-generation Electrolyzers and Electrolysis

Haotian Wang, Associate Professor in the Department of Chemical and Biomolecular Engineering at Rice University and co-founder of Solidec, will discuss the development of next-generation electrolyzers that enable lower-cost and more energy-efficient carbon capture, chemical manufacturing and critical metal recovery.

This panel is from 9:30–10:15 a.m. on Tuesday, March 11. More information here.

ExxonMobil | Real-world Progress on Building a Low-carbon Business

Schuyler Evans, ExxonMobil's CCS commerical and business development manager low carbon solutions, will speak on how the energy giant is navigating a complex energy transition and share insights into the strategic thinking behind building a new business that helps reduce emissions.

This panel is from 10-10:30 a.m. on Tuesday, March 11. More information here.

Enovate.AI | AI-driven Advantage: Automate. Optimize. Decarbonize.

Enovate.AI Chief Experience Officer Rebecca Nye, joined by Last Mile Production, will show how its 3-clicks digital strategy empowers operators to make faster, smarter decisions—reducing emissions, enhancing productivity and unlocking new levels of profitability.

This panel is from 10:30–11 a.m. on Tuesday, March 11. More information here.

Financing the Future: Scaling clean energy through innovative investment strategies

Jim Gable, president of Chevron Technology Ventures and vice president of innovation, along with Greentown Lab's new CEO Georgina Campbell Flatter, will discuss the bankability of technologies in different geographies, investment opportunities in emerging markets, sources of funding and risk management strategies investors are using. Panelists also include leaders from Siemens Energy, Energy Impact Partners, and S&P Global Commodity Insights.

This panel is from 12:30–1:10 p.m. on Tuesday, March 11. More information here.

Sage Geosystems | Geothermal at the Speed of Need: How Sage Geosystems is meeting growing energy demand

Learn from Jason Peart, general manager of strategy and development, how Sage's approach to geothermal technology is tackling the fast-growing energy demands of critical sectors, including data centers, utilities, energy storage, and US Department of Defense projects.

This panel is from 1:30–2 p.m. on Tuesday, March 11. More information here.

Rice University | Valuing Nature-based Solutions for CO2 Removal

Carrie Masiello, director of the Rice Sustainability Institute, will introduce to the breadth of nature-based solutions possible, explore some of the most exciting opportunities and give guidance on how to think rigorously about matching individual NBS opportunities to specific portfolio needs.

This panel is from 1:30–2:15 p.m. on Tuesday, March 11. More information here.

Square Robot | Bridging the Divide: How Square Robot's tank inspections align corporate strategy with on-the-ground reality

Square Robot CEO David Lamont will discuss how companies can keep their tank assets online by adopting new technology and navigating the challenges of aligning corporate objectives with site-level realities.

This panel is from 3–3:30 p.m. on Tuesday, March 11. More information here.

The Green Gold Rush: A multi-trillion dollar opportunity?

Bobby Tutor, chairman of Houston Energy Transition Initiative and CEO of Artemis Energy Partners, will be joined by leaders from Accenture, S&P Global, and BeyondNetZero to discuss the immense economic potential of climate solutions and highlight the business opportunities created by the transition to a low-carbon economy.

This panel is from 4–4:30 p.m. on Tuesday, March 11. More information here.

ExxonMobil | Applying Technology to Maximize Value in the Permian Basin

James Ritchie, Exxon's vice president upstream technology portfolio, will share the latest technologies being developed and deployed to improve recovery and capital efficiency in the Permian Basin and demonstrate how these technologies and innovations maximize overall value while reducing greenhouse gas emissions and water usage.

This panel is from 2:30–3 p.m. on Wednesday, March 12. More information here.

Rice University | Plasma Foundry for Scalable Industrial Decarbonization

Aditya Mohite, a Rice professor and the faculty director of the Rice Engineering Initiative for Energy Transition and Sustainability (REINVENTS), will share how The Plasma Foundry, a 1:1 customized accelerator at Rice, is using cold plasma technology and its accelerator model to provide disruptive solutions at scale.

This panel is from 9:30–10:15 a.m. on Thursday, March 13. More information here.

Fervo Energy | Speed and Scale: The Geothermal Decade Is Now

Quinn Woodard Jr., Fervo Energy's senior director, power generation and surface facilities, will discuss how the company is pioneering transformative EGS technology to power data centers, homes and beyond.

This panel is from 10:30–11 a.m. on Thursday, March 13. More information here.

Corrolytics | Digitizing and Revolutionizing Corrosion Detection and Monitoring for Industrial Assets

Anwar Sadek, Corrolytics co-founder and CEO, will share how the company is revolutionizing corrosion detection and monitoring with patented technology to proactively enhance safety, reduce costs and extend asset lifespan.

This panel is from 10:30–11 a.m. on Thursday, March 13. More information here.

Zeta Energy | The Rise of Lithium-Sulfur Batteries: A solution to critical metal constraints

Rodrigo Salvatierra, Zeta's chief science officer, will introduce Zeta Energy’s lithium-sulfurized carbon technology, which effectively addresses the key limitations of lithium-sulfur batteries.

This panel is from 3–3:30 p.m. on Thursday, March 13. More information here.

Future Cities on the Move: Innovative pathways for sustainable urban mobility

Lisa Lin, Harris County's director of sustainability, will speak on this panel on successful public-private partnerships driving innovation in sustainable transport by leveraging technology and data analytics. She'll be joined by Aberdeen's council co-lead and leaders from S&P Global and GreenCap, based in Cape Town, South Africa.

This panel is from 3:30–4 p.m. on Thursday, March 13. More information here.

Collaboration Spotlight: Building a resilient Gulf Coast energy and chemical sector

Greater Houston Partnership and HETI's Jane Stricker will join Ramanan Krishnamoorti from the University of Houston and leaders from Argonne National Laboratory and SABIC to explore opportunities and pathways to strengthen the US Gulf Coast’s global leadership position in base chemical manufacturing and the national security and economic opportunities that innovation and process integration create.

This panel is from 4:30–5 p.m. on Thursday, March 13. More information here.

These three Houston innovators have been recognized by Time Magazine. Photos courtesy

3 Houstonians named to prestigious list of climate leaders

who's who

Three Houston executives — Andrew Chang, Tim Latimer, and Cindy Taff — have been named to Time magazine’s prestigious list of the 100 Most Influential Climate Leaders in Business for 2024.

As managing director of United Airlines Ventures, Chang is striving to reduce the airline’s emissions by promoting the use of sustainable aviation fuel (SAF). Jets contribute to about two percent of global emissions, according to the International Energy Agency.

In 2023, Chang guided the launch of the Sustainable Flight Fund, which invests in climate-enhancing innovations for the airline sector. The fund aims to boost production of SAF and make it an affordable alternative fuel, Time says.

Chang tells Time that he’d like to see passage of climate legislation that would elevate the renewable energy sector.

“One of the most crucial legislative actions we could see in the next year is a focus on faster permitting processes for renewable energy projects,” Chang says. “This, coupled with speeding up the interconnection queue for renewable assets, would significantly reduce the time it takes for clean energy to come online.”

At Fervo Energy, Latimer, who’s co-founder and CEO, is leading efforts to make geothermal power “a viable alternative to fossil fuels,” says Time.

Fervo recently received government approval for a geothermal power project in Utah that the company indicates could power two million homes. In addition, Fervo has teamed up with Google to power the tech giant’s energy-gobbling data centers.

In an interview with Time, Latimer echoes Chang in expressing a need for reforms in the clean energy industry.

“Addressing climate change is going to require us to build an unprecedented amount of infrastructure so we can replace the current fossil fuel-dominated systems with cleaner solutions,” says Latimer. “Right now, many of the solutions we need are stalled out by a convoluted permitting and regulatory system that doesn’t prioritize clean infrastructure.”

Taff, CEO of geothermal energy provider Sage Geosystems, oversees her company’s work to connect what could be the world’s first geopressured geothermal storage to the electric grid, according to Time. In August, Sage announced a deal with Facebook owner Meta to produce 150 megawatts of geothermal energy for the tech company’s data centers.

Asked which climate solution, other than geothermal, deserves more attention or funding, Taff cites pumped storage hydropower.

“While lithium-ion batteries get a lot of the spotlight, pumped storage hydropower offers long-duration energy storage that can provide stability to the grid for days, not just hours,” Taff tells Time. “By storing excess energy during times of low demand and releasing it when renewables like solar and wind are not producing, it can play a critical role in balancing the intermittent nature of renewables. Investing in pumped storage hydropower infrastructure could be a game-changer in achieving a reliable, clean energy future.”

Clockwise from top left: Sean Kelly of Amperon, Dianna Liu of ARIXTechnologies, Matthew Dawson of Elementium Materials, Vibhu Sharma of InnoVent Renewables, Cindy Taff of Sage Geosystems, and Emma Konet of TierraClimate. Photos courtesy

Houston's top energy transition founders explain their biggest challenges

overheard

From finding funding to navigating the pace of traditional oil and gas company tech adoption, energy transition companies face their fair share of challenges.

This year's Houston Innovation Awards finalists in the Energy Transition category explained what their biggest challenge has been and how they've overcome it. See what they said below, and make sure to secure your tickets to the Nov. 14 event to see which of these finalists win the award.

"The evolving nature of the energy industry presents opportunities to solve some of our industry's greatest challenges. At Amperon we help optimize grid reliability and stability with the power of AI demand forecasting." 

Sean Kelly, CEO of Amperon, an AI platform powering the smart grid of the future

"The biggest challenge in leading an energy transition-focused startup has been balancing the urgency for sustainable solutions with the slow pace of change in traditional industries like oil and gas. Many companies are cautious about adopting new technologies, especially when it comes to integrating sustainability initiatives. We overcame this by positioning our solutions not just as environmentally friendly, but as tools that improve safety, efficiency, and cost savings. By aligning our value proposition with their operational goals and demonstrating real, measurable benefits, we were able to gain traction and drive adoption in industries that are traditionally resistant to change." 

— Dianna Liu, CEO of ARIXTechnologies, an integrated robotics and data analytics company that delivers inspection services through its robotics platforms

"Scaling up production of hard tech is a major challenge. Thankfully, we recruited top-notch talent with experience in technology scale-up and chemical processes. In addition, we've begun building partnerships with some of the world's largest chemical manufacturers in our space who are excited to be a part of our journey and could rapidly accelerate our go to market strategy. We have significant demand for our product as early as 2025, so partnering with these companies to scale-up will bring our technology to market years ahead of doing it alone."

— Matthew Dawson, CEO of Elementium Materials, a battery technology with liquid electrolyte solutions

"Our pyrolysis reactor is a proprietary design that was developed during Covid. We ran simulations to prove that it works, but it was not easy to test it in a pilot facility, let alone scaling it up. We managed ... to run our pilot plant studies, while working with them remotely. We proved that our reactor worked and produced high quality products. Later, we built our own pilot plant R&D facility to continue running tests and optimizing the process. Then, there was the challenge of scaling it up to commercial size. ... We put together a task force of four different companies to come together to design and build this complex reactor in record time."

— Vibhu Sharma, CEO of InnoVent Renewables, a startup with proprietary continuous pyrolysis technology that converts waste tires, plastics, and biomass into valuable fuels and chemicals

"Energy storage and geothermal power generation are capital-intensive infrastructure projects, requiring investors with a deep commitment and the patience in terms of years to allow the technology to be developed and proven in the field. One challenge is finding that niche of investors with the vision to join our journey. We have succeeded in raising our $30 million series A with these types of investors, whom we’re confident will continue the journey as we scale." 

— Cindy Taff, CEO of Sage Geosystems, an energy company focused on developing and deploying advanced geothermal technologies to provide reliable power and sustainable energy storage solutions regardless of geography

"The biggest challenge we've faced has been to bring together massive independent power producers on one side who are investing hundreds of millions of dollars into grid infrastructure with multi- national tech giants on the other that don't have experience working much with energy storage. As a startup with only four employees, gaining credibility with these players was critical. We overcame this hurdle by becoming the preeminent thought leader on storage emissions, through publishing white papers, discussing the issues on podcasts, and (more)."

— Emma Konet, CTO of TierraClimate, a software provider that helps grid-scale batteries reduce carbon emissions

Want to work for one of the top energy startups in Houston? These ones are hiring. Photo via Getty Images

These top Houston energy transition startups are hiring

About a third of this year's startup finalists for the Houston Innovation Awards are hiring — from contract positions all the way up to senior-level roles. And seven of these companies are advancing innovative energy transition technologies.

The finalists, announced last week, range from the medical to energy to AI-related startups and will be celebrated next month on Thursday, November 14, at the Houston Innovation Awards at TMC Helix Park. Over 50 finalists will be recognized for their achievements across 13 categories, which includes the 2024 Trailblazer Legacy Awards that were announced earlier this month.

Click here to secure your tickets to see which growing startups win.

When submitting their applications for the awards, every startup was asked if it was hiring. Let's take a look at what companies among the energy transition finalists you could land a job at.

Double-digit growth

Houston energy tech company Enovate Ai (previously known as Enovate Upstream) reported that it is hiring 10-plus positions. The company, with 35 current employees, helps automate business and operational processes for decarbonization and energy optimization. Its CEO and founder, Camilo Mejia, sat down for an interview with InnovationMap in 2020. Click here to read the Q&A.

Square Robot is hiring about 10 new Houston employees and 15 total between Houston and other markets, according to its application. The advanced robotics company was founded in Boston in 2016 and opened its Houston office in August 2019. It develops submersible robots for the energy industry, specifically for storage tank inspections and eliminating the need for humans to enter dangerous and toxic environments. Last year it reported to be hiring 10 to 30 employees as well, ahead of the 2023 Houston Innovators Award. It currently has 25 Houston employees and about 50 nationally.

InnoVent Renewables LLC is also hiring 15 new employees to be based in Mexico. The company launched last year with its proprietary continuous pyrolysis technology that can convert waste tires, plastics, and biomass into fuels and chemicals. The company scaled up in 2022 and has operations in Pune, India, and Monterrey, Mexico, with plans for aggressive growth across North America and Latin America. It has 20 employees in Mexico and one in Houston currently.

Senior roles and steady growth

Geothermal energy startup Sage Geosystems reported that it is looking to fill two senior roles in the company. It also said it anticipates further staff growth after its first commercial energy storage facility is commissioned at the end of the year in the San Antonio metro area. The company also recently expanded its partnership with the United States Department of Defense's Defense Innovation Unit and announced this month that it was selected to conduct geothermal project development initiatives at Naval Air Station in Corpus Christi. It has 12 full-time employees, according to its application.

Meanwhile, Syzygy Plasmonics is hiring four positions to add to its team of 120. The company was named to Fast Company's energy innovation list earlier this year.

Future roles

Other finalists reported that they are currently not hiring, but had plans to in the near future.

NanoTech Materials Inc., which recently moved to a new facility, is not currently. Hiring but said it plans with new funding during its series B.

Renewable energy startup CLS Wind is not hiring at this time but reported that it plans to when the company closes funding in late 2024.

———

A version of this article originally ran on InnovationMap.

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

coming soon

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 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.

---

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."