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

green giants

Fervo Energy climbed 10 spots on Time's list of the World's Top GreenTech Companies of 2026. Photo via Fervo Energy

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).

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

Houston geothermal company raises $97M Series B

fresh funding

Houston-based geothermal energy startup Sage Geosystems has closed its Series B fundraising round and plans to use the money to launch its first commercial next-generation geothermal power generation facility.

Ormat Technologies and Carbon Direct Capital co-led the $97 million round, according to a press release from Sage. Existing investors Exa, Nabors, alfa8, Arch Meredith, Abilene Partners, Cubit Capital and Ignis H2 Energy also participated, as well as new investors SiteGround Capital and The UC Berkeley Foundation’s Climate Solutions Fund.

The new geothermal power generation facility will be located at one of Ormat Technologies' existing power plants. The Nevada-based company has geothermal power projects in the U.S. and numerous other countries around the world. The facility will use Sage’s proprietary pressure geothermal technology, which extracts geothermal heat energy from hot dry rock, an abundant geothermal resource.

“Pressure geothermal is designed to be commercial, scalable and deployable almost anywhere,” Cindy Taff, CEO of Sage Geosystems, said in the news release. “This Series B allows us to prove that at commercial scale, reflecting strong conviction from partners who understand both the urgency of energy demand and the criticality of firm power.”

Sage reports that partnering with the Ormat facility will allow it to market and scale up its pressure geothermal technology at a faster rate.

“This investment builds on the strong foundation we’ve established through our commercial agreement and reinforces Ormat’s commitment to accelerating geothermal development,” Doron Blachar, CEO of Ormat Technologies, added in the release. “Sage’s technical expertise and innovative approach are well aligned with Ormat’s strategy to move faster from concept to commercialization. We’re pleased to take this natural next step in a partnership we believe strongly in.”

In 2024, Sage agreed to deliver up to 150 megawatts of new geothermal baseload power to Meta, the parent company of Facebook. At the time, the companies reported that the project's first phase would aim to be operating in 2027.

The company also raised a $17 million Series A, led by Chesapeake Energy Corp., in 2024.

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

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Texas City ammonia plant acquired by Yara in $1.3 billion deal

Ammonia Acquisition

Yara North America, a subsidiary of Norwegian fertilizer and ammonia producer Yara International, has agreed to buy an ammonia production plant in Texas City for $1.3 billion.

The seller is GCA Holdings, an affiliate of Texas City-based chemical manufacturer Gulf Coast Ammonia, which is owned by private equity firms Lotus Infrastructure Partners and MB Energy.

The Texas City plant, with an eventual annual capacity of 1.3 million metric tons, is expected to start full production by the end of this year. Yara says the ammonia produced by the plant will serve its own fertilizer production system and its key customers.

During a recent call with analysts and investors, Magnus Ankarstrand, executive vice president and CFO of Yara International, said the plant holds the potential to become one of the company’s most profitable plants. The $1.3 billion purchase price, he added, “is a very attractive entry ticket to ammonia production in the U.S. at a very attractive cost.”

The Texas City plant will add to Yara’s holdings in the Lone Star State, as Yara is the majority owner of an ammonia, hydrogen and nitrogen production plant in Freeport.

Construction of the ammonia plant began in 2020, but technical and infrastructure issues delayed the project. On its website, Gulf Coast Ammonia says the plant represented a $600 million investment.

“Gulf Coast Ammonia is a world-class asset that required disciplined execution across development, financing, construction, and commercial structuring,” Philipp Pletka, managing director of Lotus Infrastructure Partners, says in a news release.

Trexlertown, Pennsylvania-based Air Products, which owns and operates the country’s largest hydrogen pipeline network, will continue to supply hydrogen and nitrogen for the plant under a long-term deal with Yara, according to the release.

However, the news comes two days after Yara International announced that it would no longer be purchasing ammonia assets in the Louisiana Clean Energy Complex (LCEC) from Air Products. In a separate release, Yara said it planned to reallocate funds toward "alternative mature U.S. ammonia investment opportunities with more competitive returns."

Houston hypersonic engine company lands $91M to accelerate production

Clean Speed

Houston-based Venus Aerospace has closed a $91 million Series B round and plans to scale the production of its hypersonic engine.

The round was led by Houston-based Mercury Fund with participation from Lockheed Martin Ventures, MESH, PEAK6, Draper Associates, Starboard Star Venture Capital, Green Sands Equity and other investors, according to a news release.

The investment comes about a year after Venus completed the first U.S. flight test of its high-thrust rotating detonation rocket engine (RDRE). The engine is expected to enable vehicles to travel four to six times the speed of sound from a conventional runway and is about 15 percent more efficient than traditional alternatives, according to the company.

Venus Aerospace says the latest round of funding will allow it to move the RDRE from demonstration to deployment and meet customer requirements for the near-term defense and space industries. The company says that the reusable RDRE is designed with a "common propulsion architecture" that can work for multiple industries and mission types.

“This financing marks an important step in moving Venus from breakthrough demonstration to scaled capability,” Sassie Duggleby, co-founder and CEO, said in the news release. “Our customers need propulsion systems that go farther, can be produced reliably and are built on supply chains they can trust. We are advancing that capability with American engineering and manufacturing talent to strengthen U.S. defense, expand space access and support the future of high-speed flight.”

Venus Aerospace raised a $20 million Series A in 2022, led by Wyoming-based Prime Movers Lab. At the time, the company said it would put the funding toward three main technologies: a next-generation rocket engine, aircraft shape and leading-edge cooling system.

The company also picked up an investment from Lockheed Martin Ventures, the investment arm of aerospace and defense contractor Lockheed Martin, in November 2025—in addition to funding from other investors over the years.

“Since our initial investment, Venus has progressed very quickly in its technology development," Chris Moran, vice president and general manager of Lockheed Martin Ventures, added in the release. "Our reinvestment in Venus recognizes Venus’ accomplishments to date and focus on speed to manufacture, cost management and reduction of supply chain constraints. Venus is working effectively to position its propulsion system for the production scale required by defense programs.”

"Venus is exactly the kind of company Houston capital should be backing," Blair Garrou, co-founder and managing partner at Mercury Fund, added in the release. "It combines multiple frontier technologies, domestic manufacturing and clear commercial and national security relevance. We believe this team is positioned to lead an important new chapter in defense and space, and we are proud to support a company building breakthrough technology here in Texas."

Venus Aerospace and Houston clean tech startup Vaulted Deep were also named to the World Economic Forum's Technology Pioneers community earlier this summer.

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This article first appeared on InnovationMap.com.

14 climatech startups join Greentown Houston in first half of 2026

green team

Climatech incubator Greentown Labs reports that 14 startups have joined its Houston community so far this year.

The companies are among 30 new startups to have joined Greentown Houston and Greentown Boston in 2026. Four of the companies are headquartered in Houston.

The startups are working on a range of "hydrogen-powered heavy-duty transport to AI-driven grid interconnection," according to Greentown.

The local startups that joined Greentown Houston include:

  • Houston-based Focis AI, which transforms industrial laser scans into structured asset intelligence to automatically identify, classify and map components in refineries and plants
  • Houston-based Iron Lattice, which develops next-generation memory technology for AI and high-performance computing that improves energy efficiency, endurance and scalability while remaining compatible with existing semiconductor manufacturing
  • Houston-based Orbital Arc, which is developing a new ion engine designed to improve the efficiency and scalability of spacecraft propulsion from low Earth orbit to deep space
  • Houston-based Sustain Energy LLC, which delivers cleaner, lower-cost fuel to industrial customers in pipeline-absent, underserved markets, cutting their energy costs and emissions with no infrastructure investment on their end

Other startups from around the world joined the Houston incubator in the same time period, including:

  • Ankara-based AIS Field, which develops robotic, AI-assisted non-destructive inspection systems, including submersible tank and boiler crawlers
  • San Francisco-based Armada AI, which builds rapidly deployable modular and edge data centers that run on local, stranded, or renewable power
  • San Francisco-based Armeta, which turns complex engineering drawings and legacy documentation into structured, usable data
  • Pittsburgh-based Atlas Robotics, which develops a Physical AI platform that powers autonomous material-handling robots and AI-guided forklifts
  • Ghana-based Cocoa Potash, which transforms high-emissions agricultural waste from cocoa, coconut, and palm-nut into organic potash, fertilizer and renewable energy
  • Israel-based Criaterra, which produces low-carbon, cement-free building materials
  • Italy-based ETAK, which manufactures modular reactors that convert solid waste into clean syngas
  • Kenya-based FelixFusion, which uses its Felix platform to model every grid connection point, including capacity, upgrade costs, and constraints
  • San Diego-based Gemini Energy, which builds next-generation fuel cells for data-center power
  • Tokyo-based Hibot, which develops robotic systems for inspecting and maintaining infrastructure in hazardous, hard-to-access environments
  • Austin-based Sheetak, which designs and manufactures thermoelectric coolers, generators, and assemblies for solid-state cooling and energy harvesting
  • The Netherlands-based ToPerform, which makes AI-powered, non-intrusive fouling sensors that monitor pipelines around the clock and predict the optimal cleaning time

Another 16 startups joined Greentown's Boston incubator. See the full list of new members here.

More than 100 startups joined Greentown last year, according to an end-of-year reflection shared by Greentown CEO Georgina Campbell Flatter. Read more about them here.

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