Ten climatetech startups were named most-promising at this annual Rice Alliance Energy Tech Venture Forum. Photo courtesy Rice Alliance.

Investors at the Rice Alliance Energy Tech Venture Forum have named the 10 most-promising startups among the group of 100 clean tech companies participating in the event.

The 22nd annual event was held yesterday, Sept. 18, at Rice University’s Jones Graduate School of Business and was part of the second Houston Energy and Climate Startup Week.

The most-promising startups will receive $7,000 in in-kind legal services from Baker Botts.

The 10 most-promising companies included:

  • Houston-based Xplorobot, which has developed laser gas imaging technology for the first handheld methane detection device approved by the EPA as an alternative test method
  • Seattle-based Badwater Alchemy, a desalination company that uses nano materials to purify saline water at a fraction of the cost of traditional methods
  • San Francisco-based Ammobia, which is developing a clean ammonia production process
  • Illinois-based Celadyne Technologies, which is building hydrogen for industrial decarbonization with durable and efficient fuel cells and electrolyzers
  • Massachusetts-based MacroCycle Technologies, which converts plastic waste in the form of bottles, food trays and polyester textiles into virgin-grade mPET resin
  • Massachusetts-based AtoMe, which uses nano-ceramics to develop ultra-durable metals for 3D printing
  • Colorado-based Advanced Thermovoltaic Systems (ATS) Energy, a renewable energy semiconductor manufacturing company
  • North Carolina-based Lukera Energy, which is converting waste methane into high-value fuel
  • Midland, Texas-based AI Driller, a company that uses AI and machine learning to enable remote operations and provide historical drilling data for survey management, anti-collision monitoring and iob reporting
  • 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

Arculus Solutions won the People's Choice Award. The New Jersey-based company retrofits natural gas pipelines for safe hydrogen transportation. It also won Track A: Hydrogen, Fuel Cells, Buildings, Water, & Other Energy Solutions at the Energy Venture Day and Pitch Competition during CERAWeek earlier this year.

The 100 energy technology ventures selected to participate in the forum were named earlier this year. See the full list here.

Investors in Houston and across Texas are proving to be transformational partners to finance and grow energy hardware startups. Photo via Getty Images

Experts: To power an energy revolution, a financing evolution is needed

guest column

Texas is a national leader in wind and solar, generating more energy in these categories than any other state since 2006 and double that of next placed California. As investment in renewable energy continues to skyrocket, the limitations of the 19th-century grid prevent the industry from realizing the benefits of this 21st-century technology.

For years, Texas has grappled with insufficient infrastructure for its current mix of energy sources, which includes surging renewables. The Alternating Current (AC) grid — the standard since the 1800s — requires matching supply and demand in real-time to maintain a stable frequency, which is complex and costly, especially with renewable energy when the sun doesn’t always shine and the wind doesn’t always blow.

Startup firms are busy developing technologies to solve this issue. For example, it’s possible to modernize the AC grid to control the voltage of the distribution network precisely, to ensure fast adjustments to demand, and to adapt to changes in supply from renewables. Enoda, a U.K.-based scale-up, is an example of an innovative company developing and delivering technology to enable the AC grid to accommodate much higher levels of renewable energy and electrification.

Equally important to these technical innovations are innovations in financing for energy startups. On two levels, investors in Houston and across Texas are proving to be transformational partners to finance and grow energy hardware startups.

1. Innovative Funding Structures

Because of the long timelines, hardware investing requires, in part, more patient capital than the typical Silicon Valley venture capital model prevalent in startup investments. Their playbook is best suited for software companies that develop new features in weeks or months. Energy hardware startups require a longer timeline because of the far greater complexity and upfront capital outlay.

Texas investment firms and family offices are, however, accustomed to investing in complex energy projects with longer development timelines. This complexity presents a high barrier to entry for competitors, which significantly increases the upside potential that risk-capital investors seek should the innovation find market traction. At the same time, up-front capital requirements have decreased considerably, making hardware more appealing to investors.

2. Visionary partnership

Attracting investors and demonstrating early-stage traction differs for hardware companies because of the lengthy pre-revenue R&D process. Software innovators can launch with a minimum viable product, gain a few early customers, and then grow incrementally. By contrast, energy hardware technology must be fully developed from launch. Each Enoda PRIME exchanger, from the first unit sold, represents a piece of critical infrastructure on which households will rely for their electricity supply for its 30-year lifespan. For venture investors who focus on software, it’s easy to assess the health of a software company based on well-established metrics related to customer growth and the cost of customer acquisition.

Hardware investing requires investors to have a much deeper understanding of the problem being solved and assess the quality of the solution objectively rather than rely on early customers for a minimum viable product. Texas investors have been quick to understand the problems that the energy industry must solve around energy balancing and keeping the frequency of a system stable in order to grow renewable energy. Why the keen insight? Because that problem is being solved today by gas power plants. A visionary investor with many years of deep industry perspective is far more likely to appreciate that than a VC firm looking across many industries based on a standard set of metrics.

Visionary partnership is precisely what energy startups need because it’s important not to evaluate the company as it is today but what it will be in five years. Hardware startups need visionary investor partners who understand the importance of parallel pathing fundamental innovation, product development and delivery, and customer development to grow and succeed. Hardware startups succeed only when they can do these things simultaneously—and require investors who can imagine a possible future and understand the path to reach it.

Changing the way investment works

Many energy startups are worthy inheritors of Houston’s bold entrepreneurial spirit that led to technological innovations like deep-sea drilling and hydraulic fracturing. They will continue to need equally bold investors who recognize the world of opportunities at their doorstep.

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Paul Domjan is the founder and chief policy and global affairs officer at Enoda. Derek Jones and Paul Morico are partners at Baker Botts.

Houston is primed to become an energy tech hub amid ongoing energy transition. Photo via Getty Images

Houston has what it takes to be a leading energy tech hub, says expert

Guest column

As the energy capital of the world, Houston has been a long-time leader in the energy industry, particularly oil and gas. With cutting-edge research and technological breakthroughs, unique talent of energy veterans and engineering know-how, the city is swiftly developing into a booming energy technology hub.

Houston’s R&D, talent pool, energy infrastructure, and favorable business environment is fostering the growth of technology-driven energy initiatives. These factors differentiate Houston's energy tech ecosystem from other tech hubs in the U.S., in similar ways to how Silicon Valley has been known for technology and software and Boston and New York for biotech and fintech ecosystems, respectively.

Primarily, Houston's proximity to major energy players has played a crucial role in its evolution as an energy technology hub. Around 34 percent of all publicly traded oil and gas companies in the U.S. are headquartered in the city. Even the energy companies that are headquartered outside of Houston (e.g., Exelon, Duke Energy, and NextEra Energy) have established their energy transition headquarters and plants/infrastructure here. This proximity enables energy technology startups easy access to market, expertise, resources, and funding, fostering a vibrant ecosystem that supports their growth.

Moreover, with an expanding network of academic and commercial R&D activity, the city has become a rising hub of technological development. It currently houses more than 21 business research centers focusing on various aspects related to energy transition through design, prototype, and applied intelligence studios.

For instance, the Greater Houston Partnership, a key organization in promoting Houston’s economic growth, has been actively involved in positioning the city as a leader in the global energy transition space. Some of the notable green energy startups leading Houston’s energy transition are Sunnova, Solugen, Fervo Energy, Syzygy Plasmonics, Ionada, and Energy Transition Ventures.

The emergence of startup development organizations throughout the city, including workplaces, incubators, and accelerators, in recent years has fostered collaboration among founders, investors, and talent, thereby accelerating the rate of business formation and growth. Accelerators and incubators such as Halliburton Labs, Greentown Labs, The Ion District, and Rice Alliance Clean Energy Accelerator are key supporters of innovation and entrepreneurship in Houston’s energy technology landscape.

In addition, government funding is catalyzing Houston’s growth in energy tech. Most prominently, the 2022 Inflation Reduction Act (IRA) is likely to stimulate greater investment in solar and wind energy, charging infrastructure, and electric vehicles in Houston. It will support the city’s R&D institutions and technology developers in pioneering energy transition for carbon capture, utilization and storage (CCS/CCUS), hydrogen, and renewable fuels, resulting in a 13-fold increase in capital expenditure for infrastructure between 2024 and 2035.

The Bipartisan Infrastructure Law and Advanced Research Projects Agency-Energy (ARPA-E) also focus on promoting and funding research and development of advanced energy technologies, many of which are coming out of Houston.

Further, Houston has a strong talent pool with a workforce of three million individuals and the fourth largest concentration of engineers in the US. In 2022, the growth rate of tech employment in the region was 3.5 percent while the national growth rate was 3.2 percent.

The energy industry, research institutions, and government are coming together in Houston to propel it to become a leader in energy technology. However, the city still has a ways to go: Houston needs to build more in non-traditional energy sectors (e.g. wind, solar, etc.), attract more entrepreneurs to start companies here, and get more investors to invest here. Having successful energy tech exits and reinvestment in new startups here would help.

Houston has tremendous potential to lead energy technology, and with the rapidly growing focus of research, businesses, and government policies on energy transition. The confluence of energy tech players coming together in Houston is driving its evolution as an energy tech hub, making it an exciting place for new technologies and businesses to develop and grow, and reinvest in Houston.

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Michael Torosian is a partner in the corporate practice in the San Francisco office of Baker Botts. He is outside general counsel to emerging companies and their investors and advisors at all stages. This article originally ran on InnovationMap.

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Rice, DOE launch new Eastern Mediterranean Energy Center

Energy Diplomacy

Representatives from three countries visited the Rice University Baker Institute for Public Policy this month to establish the Eastern Mediterranean Energy Center, a new partnership promoting energy advancement in the region.

On June 11, Baker played host to delegations from Cyprus, Greece and Israel that included Michael Damianos, Minister of Energy, Commerce and Industry of the Republic of Cyprus; Stavros Papastavrou, Minister of Environment and Energy for Greece; and Yechiel Leiter, Israeli Ambassador to the United States. U.S. Secretary of Energy Chris Wright and Rice University President Reginald DesRoches were also present to sign a declaration of intent (DOI) that officially formed the partnership first envisioned in the Eastern Mediterranean Security and Energy Partnership Act of 2019.

“This is a dynamic field,” David Satterfield, director of the Baker Institute and former U.S. ambassador to Turkey and Lebanon, said in a news release from Rice. “The East Med has enormous further potential, not just for development, for coordination of development. It is a positive thing for energy, it's a positive thing for industry, for all of the three states represented here today. It's good for the region in a geopolitical sense as well. It provides a stabilization based upon the pragmatic and integrated development and distribution of energy resources, and that is a very good thing indeed.”

The new pact will focus on improving grid stability in the region, as well as on developing U.S. liquefied natural gas (LNG) infrastructure and new technologies.

Another goal of the Eastern Mediterranean Energy Center is suppressing conflict in the region. When the Eastern Mediterranean Security and Energy Partnership Act was signed by President Joe Biden in 2019, it lifted the prohibition on arms sales to the Republic of Cyprus, authorized foreign military financing for Greece and increased intelligence gathering on Russian interests in the Mediterranean.

“We need to use commerce to suppress and surpass conflict – that is the way to bring nations together in geopolitical tensions between countries,” Wright said in the release. “You think of it as zero-sum, there's a winner and a loser, and both sides want to be the winner. Ultimately, one side will be the winner, one side will be the loser. Maybe more objectively, both sides lose, but one loses more than the other. In commerce, it's entirely different, and commerce is voluntary exchange. It only happens when there's winners on both sides. So, when you build, you develop energy and you build energy distribution infrastructure, you bring countries, you bring people together. The three founding nations here and their leadership are all friends of mine and passionate in this mission. They not only want to develop energy to bring better opportunities to their people, but they wanted to bring those three nations together, and all of their neighbors as well, and use commerce to suppress and surpass conflict. These are generational investments.”

6 Houston companies earn recognition on Time’s global greentech list 2026

green giants

Six Houston-area businesses appear on Time magazine’s 2026 list of the world’s top greentech companies, with a high-flying name leading the pack.

The highest-ranked local company is Houston-based geothermal power producer Fervo Energy, which claims the No. 4 spot—up from No. 14 last year.

In May, Fervo raised nearly $1.9 billion in its IPO, making it the biggest-ever IPO in the clean energy sector. The company’s valuation now exceeds $10 billion.

Founded in 2017, Fervo borrows methods from the oil and gas sector to drill wells that go down vertically into hot rock before turning horizontal, letting water circulate through them and produce electricity from the heat it absorbs. Cape Station in Utah, the company's first utility-scale project, is set to start delivering power to the grid later this year, with capacity expected to grow to 100 megawatts by 2027.

Co-founder and CEO Tim Latimer tells Fast Company, which named him a 2026 Visionary of the Year, that he launched his career as a drilling engineer for fossil fuels, “but quickly became obsessed with this idea that the drilling techniques we were using would actually be transformative for the world of geothermal as well.”

Fast Company notes the geothermal power generated by Cape Station will be available 24/7, unlike wind and solar power.

“When you start adding something to the grid mix that’s affordable and works around the clock,” Latimer says, “that’s going to be a huge asset to meeting our country’s energy needs.”

Time teamed up with data provider Statista to compile the second annual ranking of the 250 top greentech companies in the world. Companies on the list either develop or provide green technology, products, or services that help ease or reverse the environmental impacts of human activity.

Statista gathered and analyzed data from more than 8,300 companies to create the list, and they were scored in three categories: positive environmental impact, innovation, and financial strength. Fervo earned a score of 94.63 out of 100.

Joining Fervo on this year’s list are:

  • Houston-based Quaise Energy (No. 78), which specializes in terawatt-scale geothermal power
  • The Woodlands-based Plus Power (No. 112), which develops, owns and operates battery storage projects
  • Houston-based Utility Global (No. 167), which develops decarbonization technology
  • Houston-based 1PointFive (No. 217), an Occidental Petroleum subsidiary that offers large-scale carbon removal and storage.
  • Houston-based Sage Geosystems (No. 250), which produces commercial-scale geothermal power

Earlier this year, six Houston-area companies landed on Time's list of top greentech companies in America: Fervo (No. 1), Quaise Energy (No. 49), Plus Power (No. 71), Utility Global (No. 98), Solugen (No. 199) and Noodoe (No. 215).

Houston-based Syzygy lands global customer for first commercial SAF plant

clean fuel deal

Houston-based Syzygy Plasmonics has secured a major future customer for its sustainable aviation fuel.

Syzygy announced this week that it has entered into a capacity reservation agreement with World Fuel Services, a global fuel distribution and logistics company.

Through the deal, World Fuel has reserved a portion of Syzygy's SAF production for future plants slated for Central and South America. The clean fuel will be produced at Syzygy’s NovaSAF-1 facility in Uruguay, which is moving toward construction.

The NovaSAF-1 will be the world's first electrified facility to convert biogas into sustainable aviation fuel (SAF). The facility is expected to produce over 350,000 gallons of SAF annually, which would be considered “a breakthrough in cost-effective, scalable clean fuel,” according to Syzygy.

The facility is expected to produce SAF with at least an 80 percent reduction in carbon intensity compared to Jet A fuel and make its first deliveries in 2028.

"Following NovaSAF-1, this agreement reflects continued interest in scalable pathways for producing SAF from biogas," Trevor Best, CEO of Syzygy Plasmonics, said in a news release. "Our NovaSAF platform is designed to deliver cost-competitive fuel while supporting the aviation sector's evolving regulatory and sustainability requirements."

Syzygy will make a portion of future production capacity available to World Fuel from its planned facilities, subject to the development and completion of those projects, according to the deal.

"We continue to evaluate supply opportunities that support increased access to lower carbon fuels in aviation, in line with emerging regulatory requirements and customer demand," Michael Ranger, senior vice president of supply EMEAA at World Fuel, added in the release. "Arrangements such as this are part of our ongoing efforts across the supply chain.”

Syzygy also secured an offtake agreement with Singapore-based commodity company Trafigura from NovaSAF-1 earlier this year.