A look inside the US’s top greentech companies

From carbon capture and circular economy innovations to breakthroughs in energy storage and sustainable food, U.S. companies are at the forefront of greentech. According to TIME and Statista’s recent ranking of the world’s 250 leading climate tech firms, the United States stands out with 119 companies on the list – spanning every major category of environmental innovation.

In this article, we spotlight the top 25 U.S. greentech companies of 2025 – and the bold solutions they’re bringing to a more sustainable future.

These 25 standout firms are addressing the climate crisis from all angles: building battery-powered aircraft, producing lab-grown meat, transforming CO₂ into usable products, and advancing agriculture through biotech and AI. What they share is a drive for innovation, scalability, and measurable environmental impact.

Read also:

• Inside the world’s top 10 greentech innovators
• Australia’s top 9 greentech innovators

Top 25 GreenTech Companies in the US

1. BETA – Mobility
2. Apeel – Circular Economy
3. Meati – FoodTech
4. TAE Technologies – Renewable Energy
5. Impossible Foods – FoodTech
6. Fervo Energy – Renewable Energy
7. Ormat Technologies – Renewable Energy
8. ChargePoint – Energy Storage & Distribution
9. Geno – Circular Economy
10. EnerVenue – Energy Storage & Distribution
11. 24M – Energy Storage & Distribution
12. Pivot Bio – AgTech
13. Plug – Resources
14. Ecovative – Circular Economy
15. Newlight Technologies – Carbon Capture & Offset Solutions
16. Verdox – Carbon Capture & Offset Solutions
17. Monolith – Resources
18. Wildtype – FoodTech
19. Rondo – Energy Storage & Distribution
20. Aurora Solar – Renewable Energy
21. FlexGen – Energy Storage & Distribution
22. Redwood – Circular Economy
23. BayoTech – Resources
24. Plenty – AgTech
25. NanoGraf Corporation – Energy Storage & Distribution

1. BETA

BETA Technologies, based in Vermont and founded in 2017, is a leading electric aviation company developing sustainable aircraft solutions. Its flagship ALIA aircraft comes in eVTOL and eCTOL variants, designed for cargo, medical, and military missions. With a range of 336 nautical miles and sub-hour recharge time, ALIA represents a major advancement in zero-emission aviation.

Inspired by the Arctic tern’s flight efficiency, the ALIA platform features a 50-foot wingspan and can transport six passengers or 1,500 pounds of cargo. BETA also supports its operations with a growing network of multimodal charging stations (Charge Cubes), enabling end-to-end electric mobility.

In 2023, BETA opened a 188,000-square-foot, net-zero manufacturing facility capable of producing 300 aircraft annually. Backed by major partners like UPS and the U.S. Department of Defense, and investors including Amazon and Fidelity, BETA is shaping the future of sustainable aviation through innovation and purpose-built infrastructure.

2. Apeel

Apeel, founded in 2012 and headquartered in California, is revolutionizing the global food supply chain with its innovative approach to reducing food waste. The company has developed a plant-based protective coating that extends the shelf life of fresh produce by slowing down oxidation and water loss—the main causes of spoilage.

Derived from natural materials found in fruit and vegetable peels, Apeel’s invisible, edible coating is applied after harvest and requires no special storage or packaging. By increasing freshness and reducing reliance on plastic packaging and refrigeration, Apeel supports a more sustainable, efficient food system from farm to shelf.

Apeel partners with major retailers and growers worldwide, helping them reduce shrink, improve profitability, and meet sustainability goals. Backed by high-profile investors such as the Bill & Melinda Gates Foundation and Andreessen Horowitz, Apeel’s science-driven solution is gaining traction as a key tool in the fight against food waste and climate change.

3. Meati

Meati is a Colorado-based food technology company transforming the alternative protein landscape through its innovative use of mycelium—the root-like structure of mushrooms. Founded in 2017, Meati has developed a scalable process to grow whole-food proteins that replicate the taste, texture, and nutrition of traditional meat, without the environmental or ethical downsides.

At the heart of Meati’s product line is its proprietary MushroomRoot™ technology, which produces nutrient-rich, minimally processed meat alternatives such as cutlets and steaks. These products are rich in protein, fiber, and essential vitamins, making them a sustainable and health-conscious choice for consumers. Unlike many plant-based alternatives, Meati’s offerings are free from soy, wheat, and artificial ingredients.

With widespread availability across major U.S. retailers like Whole Foods and Sprouts, and over $250 million in funding, Meati is rapidly scaling its production. The company’s commitment to clean labels, sustainable agriculture, and food security positions it as a leading player in the future of food.

4. TAE Technologies

TAE Technologies is a California-based energy company at the forefront of commercial fusion power development. Founded in 1998, TAE has spent over two decades advancing proprietary fusion technology aimed at generating safe, carbon-free, and virtually limitless energy. Unlike traditional nuclear fusion efforts, TAE uses a unique approach based on hydrogen-boron fuel and field-reversed configuration (FRC) plasma, which produces no radioactive waste.

The company’s flagship platform, Norman, has already achieved significant milestones in plasma stability and energy retention. TAE’s next-generation facility, Copernicus, is under development and aims to demonstrate net energy gain by the late 2020s. The company has attracted over $1.2 billion in investment from major backers including Google, Sumitomo Corporation, and Chevron, reflecting strong confidence in its long-term vision.

Beyond fusion, TAE is also commercializing adjacent innovations in power management and medical technologies. With a multi-disciplinary team and a proven track record, TAE is not just building a new energy solution—it’s building a foundation for global energy independence.

5. Impossible Foods

Impossible Foods is a pioneering food technology company based in California, dedicated to transforming the global food system by creating sustainable, plant-based alternatives to animal products. Founded in 2011 by Dr. Patrick O. Brown, the company aims to eliminate the need for animals in food production by replicating the taste, texture, and nutritional value of meat using plants.

At the heart of Impossible’s innovation is its use of heme, a molecule found in both plants and animals that gives meat its distinct flavor. Their flagship product, the Impossible Burger, replicates the experience of traditional beef while generating significantly lower greenhouse gas emissions, land use, and water consumption. Since launching, the company has expanded into other categories, including plant-based pork, sausage, and chicken nuggets.

Impossible Foods distributes its products in thousands of grocery stores and restaurants across the U.S. and globally. With a strong focus on science, scalability, and sustainability, the company is a leader in the shift toward climate-conscious, plant-based consumption.

6. Fervo Energy

Fervo Energy is a U.S.-based energy innovation company advancing the frontier of geothermal energy. Headquartered in Houston, Texas, Fervo applies cutting-edge drilling and subsurface analytics—originally developed for the oil and gas sector—to unlock geothermal resources more efficiently and cost-effectively. The company aims to scale geothermal power as a reliable, clean, and always-on energy solution for a net-zero grid.

Fervo’s approach centers on horizontal drilling, fiber optic sensing, and real-time reservoir management, enabling it to develop flexible geothermal systems in regions previously deemed uneconomical. Its flagship project, Project Red in Nevada, made headlines in 2023 for becoming the first commercial geothermal plant to use horizontal drilling—successfully delivering 3.5 MW of power to Google’s data centers.

With backing from Breakthrough Energy Ventures, Capricorn, and Devon Energy, Fervo is rapidly expanding its project portfolio across North America. As demand for 24/7 carbon-free electricity grows, Fervo Energy is positioning geothermal as a scalable backbone of the clean energy transition.

7. Ormat Technologies

Ormat Technologies is a leading U.S.-based renewable energy company specializing in geothermal power, recovered energy generation (REG), and energy storage solutions. Headquartered in Reno, Nevada, the company operates in over 30 countries and is one of the few vertically integrated firms in the geothermal space—handling everything from project development and technology design to construction and operations.

With more than 1 GW of installed capacity globally, Ormat plays a critical role in delivering baseload, always-on renewable energy. Its geothermal plants harness underground heat to generate clean electricity with minimal environmental footprint, particularly valuable in energy markets seeking reliability alongside decarbonization. Ormat is also expanding into energy storage, providing grid stabilization services through battery energy storage systems (BESS).

Backed by decades of experience and publicly traded on the NYSE (ORA), Ormat continues to drive innovation in sustainable energy infrastructure. Its hybrid approach—combining geothermal with storage and REG—positions it as a resilient and adaptable force in the global clean energy transition.

8. ChargePoint

ChargePoint is one of the world’s largest and most established electric vehicle (EV) charging networks, headquartered in Campbell, California. Since its founding in 2007, ChargePoint has focused on building the infrastructure necessary to support the transition to electric mobility, offering a comprehensive portfolio of charging hardware, cloud-based software, and mobile app services.

With more than 274,000 activated ports globally and hundreds of thousands more available through roaming agreements, ChargePoint serves a wide range of customers—from residential users and workplaces to commercial fleets and municipalities. Its network supports both AC and DC fast charging and integrates with smart grid systems to optimize energy use and charging schedules.

The company is publicly traded (NYSE: CHPT) and has formed strategic partnerships with automakers, energy providers, and property developers. By enabling scalable EV adoption and enhancing the user experience for drivers and businesses alike, ChargePoint is playing a pivotal role in accelerating the shift toward zero-emission transportation worldwide.

9. Geno

Genomatica (Geno) is a San Diego-based biotech company transforming the chemical industry through sustainable, bio-based alternatives to traditionally petroleum-derived products. Founded in 2000, Geno uses proprietary biotechnology and fermentation processes to develop and produce renewable chemicals and materials at commercial scale, aiming to significantly reduce global reliance on fossil fuels.

The company partners with major global brands—such as Unilever, L’Oréal, and lululemon—to create plant-based ingredients for everyday consumer goods, including cosmetics, cleaning products, textiles, and packaging. Geno’s technology enables the replacement of petrochemicals like butylene glycol, nylon, and surfactants with bio-based equivalents, maintaining performance while dramatically cutting carbon emissions.

With multiple manufacturing plants either operational or under development globally, Geno is scaling up production to meet rising demand for sustainable materials. Backed by strategic investors and recognized for its innovation, Geno is helping drive a circular, low-carbon economy by embedding renewability into supply chains at scale.

10. EnerVenue

EnerVenue is a California-based energy storage company pioneering a breakthrough in battery technology with its nickel-hydrogen energy storage systems. Founded in 2020, the company builds on decades of proven aerospace battery technology—originally used on the International Space Station and Hubble Space Telescope—to deliver durable, safe, and cost-effective stationary storage solutions for the grid and industrial applications.

EnerVenue’s batteries stand out for their exceptional longevity (over 30,000 cycles), wide temperature tolerance, non-flammable chemistry, and low maintenance requirements. Unlike traditional lithium-ion batteries, EnerVenue’s solution doesn’t degrade under extreme conditions and has a significantly lower environmental footprint. This makes it ideal for long-duration storage, supporting the global transition to renewable energy.

With major manufacturing expansions underway in the U.S. and partnerships with leading energy providers, EnerVenue is positioning itself as a key player in the next generation of grid-scale storage. Its technology offers a compelling alternative for utilities, commercial operations, and renewable developers seeking resilient, sustainable storage.

11. 24M

24M is a U.S.-based battery technology company revolutionizing energy storage with its unique SemiSolid™ lithium-ion battery platform. Founded in 2010 and headquartered in Cambridge, Massachusetts, 24M re-engineers the traditional battery manufacturing process to reduce cost, complexity, and environmental impact—without sacrificing performance.

At the heart of 24M’s innovation is its SemiSolid™ electrode design, which eliminates the need for many of the intermediate steps and materials used in conventional lithium-ion production. This results in batteries that are safer, longer-lasting, and significantly cheaper to produce—up to 50% lower cost, according to the company. The technology also allows for flexible form factors, supporting applications from grid storage to electric mobility.

24M has formed strategic partnerships with global manufacturers and energy providers, including Fujifilm and Kyocera, to scale its platform worldwide. With its focus on simplifying production and enabling cleaner, more affordable batteries, 24M is helping reshape the future of large-scale energy storage and electrification.

12. Pivot Bio

Pivot Bio is an innovative agtech company based in Berkeley, California, focused on transforming agricultural sustainability through microbial nitrogen solutions. Founded in 2010, the company has developed a breakthrough in nitrogen fixation, replacing synthetic fertilizers with environmentally friendly microbes that naturally provide crops with the nitrogen they need to grow.

The company’s flagship products—PROVEN® and RETURN®—use proprietary microbial technology to deliver nitrogen directly to crops like corn and wheat, reducing the need for traditional fertilizers that contribute to greenhouse gas emissions, water pollution, and soil degradation. These microbes adhere to the roots of plants, feeding them daily and reducing nitrogen loss from runoff or volatilization.

Pivot Bio’s solutions are now deployed across millions of acres in the U.S., with growing partnerships among farmers, agribusinesses, and research institutions. Backed by major investors like Breakthrough Energy Ventures, the company is positioning itself as a key player in decarbonizing agriculture while increasing crop productivity and resilience.

13. Plug

Plug is a U.S.-based leader in hydrogen fuel cell technology, focused on building the clean hydrogen ecosystem to support decarbonization across industries. Headquartered in Latham, New York, and founded in 1997, Plug Power has evolved from providing fuel cell solutions for material handling to becoming a vertically integrated hydrogen provider with end-to-end capabilities—from production and storage to delivery and utilization.

The company designs and manufactures proton exchange membrane (PEM) fuel cell systems used in electric mobility, stationary power, and industrial applications. Plug’s green hydrogen production facilities are strategically located to serve key logistics and transportation hubs, supporting clients like Amazon, Walmart, and Home Depot. Their expanding hydrogen network includes electrolysis plants, liquefaction capabilities, and fueling infrastructure.

With a goal to produce over 1,000 tons of green hydrogen per day by 2028, Plug Power is central to the hydrogen economy. Its aggressive scale-up strategy and diverse applications position it as a critical player in the transition to a low-carbon future.

14. Ecovative

Ecovative is a New York-based biotechnology company pioneering sustainable alternatives to plastics, leather, and meat using mycelium—the root structure of mushrooms. Founded in 2007, the company harnesses the power of fungi to develop scalable, high-performance materials that are biodegradable and environmentally friendly, offering a renewable solution to some of the most polluting industries in the world.

Ecovative’s core technology platform, MycoComposite™, uses agricultural waste and mycelium to create packaging, insulation, and structural components as alternatives to polystyrene and foam. Their Forager™ division produces mycelium-based leather and textile materials, aimed at replacing animal hides and petroleum-based fabrics in fashion and automotive manufacturing. Meanwhile, their MyForest™ Foods brand offers mycelium-based meat alternatives, catering to growing demand for sustainable protein.

With a strong R&D foundation and licensing partnerships worldwide, Ecovative is rapidly scaling its impact. The company’s focus on regenerative biomaterials positions it as a transformative player in the circular economy and a leader in biofabrication innovation.

15. Newlight Technologies

Newlight Technologies is a California-based biotechnology company that has developed a unique method to convert greenhouse gases into high-performance biomaterials. Founded in 2003, the company’s core innovation lies in its proprietary AirCarbon® technology, which uses natural microorganisms to transform methane and CO₂ into a meltable, moldable material that can replace plastic across multiple industries.

AirCarbon® is certified carbon-negative and has been used to manufacture a variety of products, from cutlery and phone cases to fashion accessories and eyewear. Unlike traditional plastic, it contains no synthetic petroleum-based polymers, is biodegradable in natural environments, and can be regenerated through a closed-loop process. This allows companies to significantly reduce their carbon footprint without compromising product performance.

Newlight has attracted major attention and partnerships from brands like Nike and Sumitomo, and has expanded production through its commercial-scale plant in California. With growing demand for sustainable materials, Newlight is positioning itself at the forefront of climate-positive manufacturing.

16. Verdox

Verdox is a Massachusetts-based climate tech company pioneering next-generation carbon capture solutions. Founded in 2019 as a spinout from MIT, Verdox developed a novel electrochemical process that selectively captures carbon dioxide from both industrial emissions and ambient air using far less energy than traditional methods.

Unlike conventional carbon capture systems that rely on heat-intensive chemical processes, Verdox’s technology uses an electrically charged material that binds to CO₂ when voltage is applied and releases it when the voltage is removed. This approach enables highly efficient, modular, and scalable carbon removal, adaptable across diverse industrial sectors including steel, cement, and chemicals.

Backed by Breakthrough Energy Ventures and the Chan Zuckerberg Initiative, Verdox has raised over $100 million to accelerate the commercialization of its solution. As industries look for low-energy, cost-effective decarbonization tools, Verdox’s clean, flexible technology positions it as a promising player in the global carbon capture race.

17. Monolith

Monolith is a U.S.-based clean technology company revolutionizing industrial production through its proprietary methane pyrolysis process. Founded in 2012 and headquartered in Nebraska, Monolith produces clean hydrogen and carbon black — a vital industrial material — without releasing CO₂ into the atmosphere, unlike traditional methods reliant on fossil fuels.

At the core of Monolith’s innovation is its ability to split natural gas into hydrogen and solid carbon using renewable electricity. This process avoids the emissions associated with conventional hydrogen production (often called “gray hydrogen”) and eliminates the need for petroleum-derived carbon black, which is widely used in tires, plastics, and coatings.

With partnerships including Michelin and The Goodyear Tire & Rubber Company, and support from the U.S. Department of Energy, Monolith is scaling up its operations to serve high-demand industries. Its clean hydrogen also positions the company to contribute significantly to decarbonizing sectors like transportation, ammonia production, and power generation.

18. Wildtype

Wildtype is a San Francisco-based startup pioneering cultivated seafood with a focus on sustainably grown salmon. Founded in 2016 by Aryé Elfenbein and Justin Kolbeck, the company uses cellular agriculture to grow real fish meat from salmon cells—without the need for fishing or farming. This method offers a clean, traceable, and environmentally friendly alternative to conventional seafood production.

Wildtype’s cultivated salmon is free from mercury, microplastics, antibiotics, and other contaminants typically found in wild-caught or farmed fish. By eliminating the need for ocean-based harvesting, the company aims to reduce overfishing, habitat destruction, and the carbon footprint associated with seafood supply chains.

With a pilot production facility in San Francisco and backing from investors such as CRV and Spark Capital, Wildtype is preparing for commercial launch. It plans to partner with restaurants and retailers to introduce cultivated salmon to the market, positioning itself at the forefront of sustainable food innovation and future protein solutions.

19. Rondo

Rondo is a California-based energy storage company that is revolutionizing industrial decarbonization with its patented Rondo Heat Battery (RHB). Founded in 2020, Rondo aims to decarbonize hard-to-abate sectors like cement, steel, food processing, and chemicals by delivering continuous, low-cost, zero-carbon heat using clean electricity.

The RHB stores electricity as high-temperature heat in brick materials—similar to those used in kilns—and can discharge it on demand to provide reliable thermal energy around the clock. Unlike traditional batteries, the RHB has no moving parts, enabling high durability, long life, and minimal maintenance. It’s designed to integrate with wind and solar energy sources, allowing manufacturers to shift from fossil fuels without compromising on performance or cost.

Backed by Breakthrough Energy Ventures and Bill Gates, Rondo is already partnering with major industrial players, including a large-scale deployment with Calpine. By tackling thermal emissions—responsible for a significant share of global industrial CO₂—Rondo is unlocking one of the largest decarbonization opportunities in the energy transition.

20. Aurora Solar

Aurora Solar is a San Francisco-based software company transforming how solar energy projects are designed, sold, and delivered. Founded in 2013, Aurora provides cloud-based solutions that enable solar professionals to accurately design and quote residential and commercial solar installations using high-resolution imagery, LIDAR data, and advanced modeling tools—all without visiting the site.

At the core of Aurora’s offering is its AI-powered solar design platform, which automates system layout, shading analysis, and energy production estimates. This drastically reduces the time and cost of solar project proposals, helping installers scale faster and close deals more efficiently. Its suite also includes sales enablement tools, performance simulations, and financial modeling—streamlining every step of the solar sales process.

Trusted by thousands of solar professionals across the U.S. and internationally, Aurora has supported over 9 million solar projects to date. With strong backing from investors like Fifth Wall and ICONIQ Capital, the company plays a critical role in accelerating solar adoption and supporting the transition to clean energy.

21. FlexGen

FlexGen is a North Carolina-based energy technology company specializing in advanced energy storage solutions and software platforms that enhance grid resilience and support the clean energy transition. Founded in 2009, FlexGen provides turnkey battery storage systems and its proprietary HybridOS energy management software to utilities, independent power producers, and commercial & industrial clients.

At the heart of FlexGen’s offering is HybridOS—a control platform that enables real-time monitoring, dispatch, and optimization of energy storage assets. The system integrates with multiple energy sources, including renewables, and uses intelligent algorithms to maximize performance, reduce operating costs, and ensure grid stability. This technology is especially valuable for managing intermittent renewables like solar and wind.

FlexGen has deployed over 3 GWh of energy storage across North America and is backed by investors including Apollo Global Management and Altira Group. As demand for grid-scale energy storage grows, FlexGen continues to position itself as a leader in delivering flexible, scalable, and efficient storage infrastructure for the energy systems of the future.

22. Redwood

Redwood is a Nevada-based company pioneering sustainable battery materials and recycling solutions to support the circular economy in clean energy and electric vehicles. Founded in 2017 by JB Straubel, former CTO and co-founder of Tesla, Redwood aims to reduce dependency on mining by recovering and reprocessing valuable materials from end-of-life batteries and electronics.

The company focuses on creating a closed-loop supply chain by extracting critical metals like lithium, cobalt, nickel, and copper from used batteries and manufacturing scrap. These materials are then refined and repurposed into high-quality anode and cathode components for new batteries. This not only reduces waste but significantly cuts down on the environmental and geopolitical risks of sourcing raw materials.

Redwood Materials works with leading partners including Ford, Panasonic, Amazon, and Volvo to scale its operations. With ambitious plans to produce battery materials at gigafactory scale in the U.S., Redwood is playing a crucial role in reshoring battery supply chains and accelerating the clean energy transition.

23. BayoTech

BayoTech is a U.S.-based hydrogen technology company focused on decentralized, on-site hydrogen production solutions. Headquartered in Albuquerque, New Mexico, BayoTech aims to make low-cost, low-carbon hydrogen widely accessible by eliminating the need for long-distance transport and centralized production.

At the core of BayoTech’s offering is its modular hydrogen generation systems, which use proprietary reforming technology to produce hydrogen efficiently at the point of use. This model significantly reduces infrastructure costs and carbon emissions associated with traditional hydrogen delivery methods. BayoTech’s units can be scaled and deployed quickly, making them suitable for a wide range of applications including transportation, power generation, and industrial use.

The company also operates a growing network of hydrogen hubs and partners with energy providers and fleet operators to accelerate hydrogen adoption. Backed by strategic investments and federal support, BayoTech plays a vital role in building a cleaner, more flexible hydrogen ecosystem for the U.S. and beyond.

24. Plenty

Plenty is a California-based AgTech company redefining how food is grown through innovative indoor vertical farming. Founded in 2014 and headquartered in South San Francisco, Plenty utilizes cutting-edge technology to grow fresh, pesticide-free produce year-round, using significantly less land and water than traditional agriculture.

At the heart of Plenty’s model is a high-tech vertical farming system that combines AI, machine learning, and robotics to create optimal growing environments for each plant. This controlled environment agriculture (CEA) approach allows Plenty to produce leafy greens with exceptional taste, nutrition, and consistency while using 95% less water and zero pesticides. Their farms are designed for scalability and are located near urban centers, reducing transportation emissions and food waste.

Plenty has attracted substantial investment from notable backers like SoftBank, Walmart, and Jeff Bezos. With commercial partnerships and plans for new large-scale farms, including a state-of-the-art facility in Compton, CA, Plenty is paving the way for a more sustainable and resilient food supply chain.

25. NanoGraf Corporation

NanoGraf is a Chicago-based energy storage company at the forefront of advanced battery technology. Founded in 2012, the company specializes in developing high-performance, silicon-anode lithium-ion batteries that offer significantly higher energy density compared to conventional alternatives. NanoGraf’s innovation lies in its proprietary silicon-graphene composite, which enables batteries to last longer, charge faster, and store more energy.

NanoGraf’s technology is designed to power a wide range of applications—from electric vehicles and consumer electronics to military-grade equipment. In fact, the company recently secured a $10 million contract from the U.S. Department of Defense to manufacture the world’s most energy-dense cylindrical lithium-ion cells, aiming to provide troops with longer-lasting power in the field.

With more than 50 patents and collaborations with global manufacturers, NanoGraf is positioning itself as a key enabler of next-generation energy storage. As electrification scales globally, NanoGraf’s breakthroughs in battery science are helping to accelerate the transition to cleaner, more efficient energy systems.

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