Arnergy specializes in delivering sustainable energy solutions for businesses and homes in emerging markets. Its mission is to provide clean, reliable power tailored to tackle intermittency and grid unreliability, enabling clients to access affordable distributed energy systems.
Bloom Biorenewables
Series A in 2025
Bloom Biorenewables Ltd is a Swiss company established in 2019, specializing in the development of innovative technologies that convert wood and agricultural waste into renewable materials as substitutes for petroleum-based products. The company focuses on producing bio-based materials for various sectors, including fragrances, plastics, and textiles, thereby offering sustainable alternatives to fossil fuels. By introducing a novel approach to the production of biorenewable products and fuels, Bloom Biorenewables aims to make a significant impact in promoting the use of sustainable resources and addressing climate change challenges.
Aetherflux
Series A in 2025
Aetherflux is an aerospace company focused on providing renewable energy solutions to households, businesses, and military operations worldwide. The company has developed an innovative design for space-based solar power, which entails a constellation of small satellites that harness sunlight, convert it into electricity, and wirelessly transmit the power to ground stations. This technology aims to deliver reliable energy distribution while minimizing environmental impact, positioning Aetherflux at the forefront of the renewable energy sector.
Terra CO2 Technologies
Series B in 2025
Terra CO2 Technologies produces low-carbon alternatives for cement replacement. It converts locally sourced feedstocks into high-performing, cost-competitive cementitious materials, aiming to reduce emissions in the construction industry.
Mantle8
Seed Round in 2025
Mantle8 is a pioneering exploration company specializing in natural hydrogen. It leverages proprietary geological models and imaging technologies to precisely locate and evaluate natural hydrogen sources, offering unparalleled accuracy in the industry.
INERATEC develops sustainable fuels and power-to-X plants to replace fossil fuels with carbon-neutral alternatives. The company focuses on renewable e-fuels and synthetic chemical products that enable transportation and industrial processes to run on climate-friendly energy. It produces renewable hydrogen and other greenhouse gases, which are transformed into products such as e-kerosene, carbon dioxide-neutral diesel, synthetic waxes, and methanol, allowing chemical plants to operate using synthetic fuels with climate-neutral energy, reduced chemical waste, and enhanced climate protection.
Mangrove Lithium
Venture Round in 2025
Mangrove Lithium is a Vancouver-based company that has developed a modular platform for producing battery-grade lithium hydroxide and carbonate efficiently from diverse input streams. Its scalable solution can be co-located with upstream producers or manufacturers, enabling cost-effective conversion of waste brines to chemicals and desalinated water.
H2SITE develops on-site hydrogen production technology that enables compact systems for generating hydrogen at customer sites. The technology supports low-carbon hydrogen production and integrates production, transportation, and storage, making hydrogen transport more viable and helping unlock hydrogen markets. The company aims to help businesses reduce transportation costs and energy waste by providing efficient, on-site hydrogen solutions.
Deep Sky develops carbon dioxide removal infrastructure and technologies to capture and store CO2 using renewable energy at scale. It provides renewable-energy powered capture and storage services that enable compliance, voluntary, and government procurement markets to monetize premium carbon dioxide removal credits while ensuring safe, long-term storage of the gas. By combining scalable capture with storage and environmental resources, Deep Sky supports efforts to reduce the carbon footprint and accelerate market adoption of CDR solutions.
HyperHeat
Pre Seed Round in 2024
HyperHeat develops advanced electric heating solutions capable of reaching temperatures up to 2000°C. Utilizing renewable electricity, HyperHeat provides an efficient alternative to fossil fuels for industries like steel, cement, and chemicals. With a high efficiency rate and scalability, the technology offers significant CO2 emission reductions.
NitroVolt
Seed Round in 2024
NitroVolt decarbonizes nitrogen-based fertilizer production for agriculture. Its patented Nitrolyzer unit produces ammonia on-demand using air, water, and renewable electricity at farms, reducing emissions and logistics costs.
LuxWall is a building materials company that designs and manufactures vacuum-insulated glass, a transparent insulation material that reduces heating and cooling losses and improves building energy efficiency. Its vacuum-insulated glass supports energy standards for commercial and residential buildings and uses technology aimed at enabling greater thermal performance. Founded in 2020 and headquartered in Ypsilanti, Michigan, LuxWall seeks to advance sustainable construction and has indicated a potential to reduce global carbon emissions by more than 0.5 gigatonnes per year, highlighting its environmental impact.
RedoxBlox
Series A in 2024
RedoxBlox develops thermochemical energy storage technology to decarbonize high-temperature industrial thermal processing and provide long-duration energy storage for the grid. The technology enables continuous high-temperature heat while integrating with existing infrastructure to replace natural gas combustion, supporting electrification and renewables deployment. It reduces carbon dioxide and nitrogen oxides emissions, enhances safety and resilience, and aims to lower total capital cost for industrial processors and power plant operators. By delivering scalable, long-duration heat, RedoxBlox helps industries leverage renewable energy and move toward low-emission operations.
AirLoom Energy
Seed Round in 2024
AirLoom Energy develops wind energy technology that uses lightweight wings operating on a track to capture wind. The design aims to deliver the same amount of energy as conventional turbines at a fraction of the cost, enabling low-cost utility-scale wind energy. The system uses multiple small airframes on a slender oval track with downwind forces supported by a bridling system, and the configuration can be adjusted depending on the landscape, allowing clients to harvest wind energy in cost-effective and quicker ways.
Founded in 2017, ZeroAvia develops zero-emission aircraft propulsion systems designed to eliminate aviation emissions while maintaining operational efficiency. The company focuses on scalable hydrogen-electric technologies that can retrofit existing aircraft and support sustainable aviation.
Baseload Capital
Series B in 2024
Baseload Capital invests globally in renewable heat power projects. It provides financial tools for operators to build and run these plants, focusing on geothermal systems that offer clean, reliable energy.
Graphyte offers carbon removal services by utilizing a carbon casting technology.
Type One Energy
Seed Round in 2024
Founded in 2019 by renowned fusion scientists and business leaders, Type One Energy is dedicated to delivering sustainable and affordable fusion power globally. The company employs advanced manufacturing methods, computational physics, and high-field superconducting magnets to develop its optimized stellarator fusion energy system. Its FusionDirect program aims for a low-risk, efficient path to a fusion power plant within the next decade.
44.01 specializes in CO2 removal from the atmosphere by accelerating the natural weathering process in peridotite rocks, converting captured CO2 into stable minerals.
Rondo Energy
Grant in 2024
Rondo Energy is a company focused on providing zero-carbon industrial heat solutions. Its innovative Rondo Heat Battery captures low-cost renewable electricity and converts it into continuous high-temperature heat, allowing industrial processes to operate with reduced energy costs and eliminated emissions. By enabling clients to transition to renewable energy sources, Rondo Energy supports the decarbonization of industrial operations, contributing to a more sustainable future.
Planted Solar
Series A in 2024
Planted Solar develops and deploys solar power plants using a rapid deployment platform that increases energy output per acre and accelerates project delivery. It combines development software, terrain-adaptive high-density racking, and automated construction to build flexible, all-terrain power plants. Through advanced site planning and logistics, the company aims to maximize land use and streamline solar development, enabling faster, scalable deployment of clean energy.
M2X Energy
Series B in 2024
M2X Energy is a technology company that offers automated systems for converting methane into valuable products. Its innovative, non-catalytic partial-oxidation reformer can process various feedstocks like landfill gas and biogas, helping businesses reduce greenhouse gas emissions by minimizing waste.
Xcimer Energy is an innovative company focused on developing laser-driven fusion technology to deliver affordable, abundant, and carbon-free energy. Founded in 2021 and based in Redwood City, California, Xcimer integrates low-cost excimer laser technology with the HYLIFE reaction chamber concept to create a scalable Inertial Fusion Energy (IFE) system. This approach addresses significant challenges that have historically hindered the viability of fusion power, enabling the application of experimentally proven controlled fusion reactions for electrical power generation. By transforming the energy marketplace, Xcimer aims to provide a sustainable energy solution that can meet growing global demands.
Arkea Bio
Series A in 2024
ArkeaBio focuses on developing innovative technology aimed at reducing greenhouse gas emissions within the agricultural sector. The company specializes in vaccine technology that targets methane-producing microbes in livestock, effectively neutralizing these microbes to cut methane emissions from various ruminant species. By employing proven delivery systems and sustainable farming practices, ArkeaBio's solutions are designed to be applicable across diverse geographical regions and agronomic systems. This approach not only helps in mitigating the environmental impact of livestock farming but also promotes a more sustainable agricultural industry.
Windfall Bio
Series A in 2024
Windfall Bio is an innovative company based in San Mateo, California, that addresses climate change by transforming harmful methane emissions into organic fertilizer. Established in 2022, the company utilizes methane-eating microbes to capture methane from various sources, including agriculture, oil and gas, and waste management. This nature-based technology not only reduces the methane footprint of these industries but also improves their operational efficiency and profitability while minimizing the negative environmental impacts associated with synthetic fertilizers. By providing farmers and other producers with the means to convert methane into valuable soil nutrients, Windfall Bio fosters a sustainable agricultural future and contributes positively to environmental conservation. The company is backed by prominent venture capital firms, reflecting its potential to make a significant impact in the fight against climate change.
Mission Zero
Series A in 2024
Mission Zero develops air capture technology that removes carbon dioxide from the atmosphere and concentrates it for sequestration pathways. The system is designed to recover historic CO2 at any scale by pulling ambient air, dissolving the carbon in a water solvent, and releasing it as a gas through electrodialysis, enabling CO2 users, project developers, engineers, and scientists to convert historic carbon waste into climate value.
Savor Foods
Series A in 2024
Savor Foods develops innovative technology to produce high-quality, healthy fats and oils without adverse environmental impact. Their products aim to replicate the taste and functionality of animal and plant-based fats, making them affordable and accessible.
Lilac Solutions
Series C in 2024
Lilac Solutions, Inc. is a mining technology company based in Oakland, California, specializing in lithium extraction technology. Founded in 2015, the company develops innovative solutions that utilize ion-exchange theory to absorb lithium from brine deposits. This technology includes ion exchange beads and continuous brine processing systems, which enable lithium producers to enhance project development, increase lithium recovery, and optimize operations. Lilac Solutions aims to support industries such as electric vehicles and renewable energy storage by providing methods that reduce both costs and environmental impact associated with lithium production.
Heart Aerospace
Series B in 2024
Heart Aerospace AB, established in 2018 with headquarters in Gothenburg, Sweden, and operations in Palo Alto, California, specializes in developing electric regional airliners certified for passenger flight. The company's mission is to facilitate swift, affordable, and sustainable travel for regional journeys worldwide. Their flagship aircraft, the ES-19, is a nineteen-passenger electric airliner designed with an operating range of 400 km, aiming to reduce fuel and maintenance costs compared to traditional aircraft while emitting zero operational emissions. Heart Aerospace targets commercial operation certification for the ES-19 by 2026.
Savor Foods
Seed Round in 2024
Savor Foods develops innovative technology to produce high-quality, healthy fats and oils without adverse environmental impact. Their products aim to replicate the taste and functionality of animal and plant-based fats, making them affordable and accessible.
Equilibrium Energy
Funding Round in 2023
Equilibrium Energy specializes in optimizing energy consumption and reducing costs through its advanced energy management platform. The company aims to facilitate sustainable practices, enhance efficiency for power companies, and contribute positively to the environment.
Fourth Power
Series A in 2023
Fourth Power specializes in utility-scale thermal battery storage solutions. It converts renewable energy into a reliable on-demand power source, addressing grid needs while facilitating the transition to decarbonized infrastructure.
AirLoom Energy
Seed Round in 2023
AirLoom Energy develops wind energy technology that uses lightweight wings operating on a track to capture wind. The design aims to deliver the same amount of energy as conventional turbines at a fraction of the cost, enabling low-cost utility-scale wind energy. The system uses multiple small airframes on a slender oval track with downwind forces supported by a bridling system, and the configuration can be adjusted depending on the landscape, allowing clients to harvest wind energy in cost-effective and quicker ways.
NitroVolt decarbonizes nitrogen-based fertilizer production for agriculture. Its patented Nitrolyzer unit produces ammonia on-demand using air, water, and renewable electricity at farms, reducing emissions and logistics costs.
MacroCycle Technologies
Grant in 2023
MacroCycle Technologies is a company developing a chemical recycling process to convert polyethylene terephthalate (PET) and polyester-fiber waste into virgin-grade plastics. Their proprietary technology, based on synthesizing cyclic macromolecules, enables the production of recycled PET with lower energy use than traditional methods. This process offers a sustainable, zero-carbon, and cost-competitive solution for plastic upcycling, contributing to a circular economy.
Founded in 2017, ZeroAvia develops zero-emission aircraft propulsion systems designed to eliminate aviation emissions while maintaining operational efficiency. The company focuses on scalable hydrogen-electric technologies that can retrofit existing aircraft and support sustainable aviation.
Boston Metal
Series C in 2023
Boston Metal is a metallurgy company specializing in reducing the carbon footprint of steel production. It offers industrial-scale solutions using its Molten Oxide Electrolysis (MOE) process, enabling greener and more efficient metal production.
Yard Stick
Series A in 2023
Yard Stick develops a handheld device that measures soil carbon levels in real-time. This enables evidence-based regenerative farming practices, improving soil health, increasing farmer income, and combating climate change by sequestering carbon.
Rondo Energy
Series B in 2023
Rondo Energy is a company focused on providing zero-carbon industrial heat solutions. Its innovative Rondo Heat Battery captures low-cost renewable electricity and converts it into continuous high-temperature heat, allowing industrial processes to operate with reduced energy costs and eliminated emissions. By enabling clients to transition to renewable energy sources, Rondo Energy supports the decarbonization of industrial operations, contributing to a more sustainable future.
Equilibrium Energy
Series A in 2023
Equilibrium Energy specializes in optimizing energy consumption and reducing costs through its advanced energy management platform. The company aims to facilitate sustainable practices, enhance efficiency for power companies, and contribute positively to the environment.
Dioxycle develops electrolyser solutions that convert captured carbon dioxide into valuable chemical products. Its technology enables businesses to treat carbon dioxide as a resource, reducing reliance on fossil feedstocks and lowering industrial emissions.
Aeroseal is a company specializing in duct sealing technology that focuses on reducing carbon emissions from buildings. Its innovative approach involves using a non-toxic, water-based compound to seal gaps in the building envelope, air ducts, and vents. This technology not only enhances the comfort and health of residential and commercial spaces but also plays a significant role in promoting a cleaner environment. By effectively addressing air leakage, Aeroseal's solutions contribute to improved energy efficiency, making homes and workplaces more sustainable.
CarbonCure
Venture Round in 2023
CarbonCure Technologies Inc. is a Canadian company that specializes in technology designed to sequester carbon dioxide (CO2) in concrete production. Founded in 2007 and headquartered in Dartmouth, Nova Scotia, the company provides a retrofit solution for existing concrete plants, allowing producers to incorporate waste CO2 from industrial emitters into their concrete products. During manufacturing, this CO2 is chemically converted into solid mineral carbonates, enhancing the strength of the concrete while reducing its carbon footprint. CarbonCure's innovative approach enables concrete manufacturers to produce green concrete without compromising quality or cost, thereby facilitating a shift towards sustainable building practices. The company also offers marketing and environmental reporting services to support its customers in the growing green building market. By licensing its technology at a low capital expenditure, CarbonCure generates a recurring revenue stream while contributing to the reduction of greenhouse gas emissions in the concrete industry.
CubicPV
Venture Round in 2023
CubicPV is a solar manufacturing company that focuses on producing wafers and tandem modules using advanced silicon and perovskite technologies. The company develops innovative semiconductor combinations for tandem modules, which enhance energy harvesting by utilizing two different light absorbers, thus improving efficiency across a broader spectrum of sunlight. This technology aims to reduce the cost of solar electricity to be competitive with conventional energy sources, such as coal. By manufacturing silicon wafers directly from the silicon melt, CubicPV streamlines the production process, eliminating several steps and effectively doubling the yield. This approach not only lowers the cost of clean electricity but also minimizes the carbon footprint associated with solar panel production, supporting the growing global demand for sustainable energy solutions.
VEIR is a company focused on innovative electricity transmission solutions using high-temperature superconductors. It has developed a unique passive evaporative cryogenic cooling technology that significantly enhances cooling efficiency, delivering twenty times the cooling power per kilogram of nitrogen flow compared to traditional mechanical methods. By utilizing commercial superconducting tape, VEIR's technology enables power delivery at transmission levels without resistive losses. This advancement allows clients to streamline permitting processes and supports the economical establishment of electric transmission lines across distribution-scale infrastructure.
Type One Energy
Seed Round in 2023
Founded in 2019 by renowned fusion scientists and business leaders, Type One Energy is dedicated to delivering sustainable and affordable fusion power globally. The company employs advanced manufacturing methods, computational physics, and high-field superconducting magnets to develop its optimized stellarator fusion energy system. Its FusionDirect program aims for a low-risk, efficient path to a fusion power plant within the next decade.
Windfall Bio
Seed Round in 2023
Windfall Bio is an innovative company based in San Mateo, California, that addresses climate change by transforming harmful methane emissions into organic fertilizer. Established in 2022, the company utilizes methane-eating microbes to capture methane from various sources, including agriculture, oil and gas, and waste management. This nature-based technology not only reduces the methane footprint of these industries but also improves their operational efficiency and profitability while minimizing the negative environmental impacts associated with synthetic fertilizers. By providing farmers and other producers with the means to convert methane into valuable soil nutrients, Windfall Bio fosters a sustainable agricultural future and contributes positively to environmental conservation. The company is backed by prominent venture capital firms, reflecting its potential to make a significant impact in the fight against climate change.
ClearFlame Engines
Series B in 2023
ClearFlame Engines, Inc. develops and manufactures innovative engines for heavy-duty applications, focusing on decarbonizing the industry by replacing traditional diesel engines. Established in 2016 and headquartered in Woodridge, Illinois, the company serves diverse markets, including marine, agriculture, transportation, power generation, rail, and construction. ClearFlame's patented technology allows heavy-duty engine manufacturers to produce engines that offer higher performance and lower operating costs, providing significant fuel cost savings for their customers. The company's mission is to address the environmental challenges posed by diesel fuel while enhancing engine efficiency and affordability.
Rumin8 is addressing a critical environmental challenge by targeting methane emissions from livestock, which account for approximately 3.7% of global greenhouse gas emissions. The company has developed a groundbreaking technology that significantly reduces methane emissions from cattle by up to 95% by harnessing and transforming natural anti-methane compounds found in plants into dietary supplements for livestock. This innovation not only curtails methane production but also enhances the efficiency of the animals’ digestive systems, thereby providing them with more energy for growth. Rumin8's mission is to decarbonize millions of cattle worldwide, contributing to a more sustainable and climate-favorable food system to meet the dietary needs of a growing global population.
Mill Industries
Venture Round in 2023
Mill Industries develops and rents smart kitchen bins that chop, dry, shrink, and deodorize food waste overnight, turning it into a coffee‑ground‑like material. The system is digitally connected, allowing users to monitor usage and receive free shipping of the dried residue to a partner facility that converts it into animal feed or compost. By reducing household waste and enabling efficient recycling, the company addresses climate‑related food waste challenges.
LuxWall
Venture Round in 2023
LuxWall is a building materials company that designs and manufactures vacuum-insulated glass, a transparent insulation material that reduces heating and cooling losses and improves building energy efficiency. Its vacuum-insulated glass supports energy standards for commercial and residential buildings and uses technology aimed at enabling greater thermal performance. Founded in 2020 and headquartered in Ypsilanti, Michigan, LuxWall seeks to advance sustainable construction and has indicated a potential to reduce global carbon emissions by more than 0.5 gigatonnes per year, highlighting its environmental impact.
Arkea Bio
Seed Round in 2022
ArkeaBio focuses on developing innovative technology aimed at reducing greenhouse gas emissions within the agricultural sector. The company specializes in vaccine technology that targets methane-producing microbes in livestock, effectively neutralizing these microbes to cut methane emissions from various ruminant species. By employing proven delivery systems and sustainable farming practices, ArkeaBio's solutions are designed to be applicable across diverse geographical regions and agronomic systems. This approach not only helps in mitigating the environmental impact of livestock farming but also promotes a more sustainable agricultural industry.
Othersphere
Pre Seed Round in 2022
Othersphere develops a SaaS platform that helps identify profitable and sustainable locations for deploying zero or low greenhouse gas industrial technologies. This enables companies to reduce their greenhouse gas emissions trajectories while gaining access to unique market insights.
RIFT is a startup on a mission towards a sustainable future that is powered by clean and renewable energy.
Baseload Capital
Convertible Note in 2022
Baseload Capital invests globally in renewable heat power projects. It provides financial tools for operators to build and run these plants, focusing on geothermal systems that offer clean, reliable energy.
Molten Industries
Seed Round in 2022
Molten Industries specializes in developing clean technology aimed at decarbonizing the hydrogen market. Its innovative platform combines methane-splitting and electrolysis technologies, featuring integrated thermal control and modular design for low-emission performance. This enables various industrial sectors to access cleaner hydrogen inputs with reduced environmental impact and scalable deployment.
Electra
Venture Round in 2022
Electra is a company dedicated to revolutionizing iron and steel production by significantly reducing carbon dioxide emissions. It specializes in alternative steelmaking technology that employs innovative electrochemical and hydrometallurgical processes. By electrifying and decarbonizing the steelmaking process, Electra enables the production of low-carbon clean iron from various ores and renewable energy sources. This approach not only minimizes the environmental impact associated with traditional steel production but also helps companies lower energy intensity and costs, promoting sustainability within the industry.
Blue World Technologies
Series B in 2022
Blue World Technologies is a developer and manufacturer of methanol fuel cell components and systems aimed at the automotive, heavy-duty transportation, and stationary application sectors globally. Founded on January 1, 2018, in Aalborg, Nordjylland, by Mads Friis Jensen, Mads Bang, and Anders Korsgaard, the company offers a green alternative to traditional combustion engines and diesel generators. Its innovative approach focuses on high-temperature PEM technology combined with methanol-reforming, providing energy-efficient and sustainable solutions. Blue World Technologies enables clients to establish development and manufacturing operations in strategic markets, optimizing the supply chain and enhancing customer proximity.
Fervo Energy
Series C in 2022
Founded in 2017, Fervo Energy specializes in developing and operating geothermal assets using proprietary technology. Based in San Francisco, the company generates clean power through innovative geoscience methods, aiming to provide a dispatchable foundation for a 100% clean energy future.
Blue Frontier
Series A in 2022
Blue Frontier develops sustainable air conditioning technology with integrated energy storage. Founded in 2018 and based in Fort Lauderdale, Florida, the company aims to reduce energy consumption compared with conventional systems. Its technology supports HVAC-as-a-Service models and stores electricity, enabling operation during periods when renewable energy is abundant without compromising cooling service. The system uses less electricity than traditional air conditioners, contributing to lower utility costs and improved grid resilience for clients.
Source is a developer and manufacturer of solar-powered devices that extract drinkable water from the atmosphere. Its hydro panel technology uses advanced materials science to pull water from even the driest conditions and mineralize it for delivery to taps, enabling clean water access for residential, commercial, industrial, and community use. The company was founded in 2014 and is headquartered in Scottsdale, Arizona.
ReMo Energy
Seed Round in 2022
ReMo Energy is a company that specializes in the innovative manufacturing of industrial materials by utilizing renewable energy instead of fossil fuels. It focuses on developing distributed-scale green ammonia plants that produce nitrogen fertilizers from renewable electricity, air, and water. By employing predictive modeling and a novel approach to vegetation development, ReMo Energy effectively harnesses local renewable energy sources to create green chemicals. This approach addresses the challenges of food security and climate change while optimizing the use of distributed, intermittent renewable energy resources.
Circ, founded in 2011 and based in Danville, Virginia, operates a textile recycling business. It focuses on transforming discarded clothing into valuable raw materials for fabric production. Circ's proprietary technology enables it to cost-effectively recycle various fiber types, including cotton, poly-cotton, polyester, and nylon, using water as a solvent. The company aims to meet consumer demands for sustainability without compromising quality, price, or convenience. It produces market-grade dissolving pulp and petroleum monomers equivalent to virgin materials, which can be sold at competitive prices to manufacturers.
Terra CO2 Technologies
Series A in 2022
Terra CO2 Technologies produces low-carbon alternatives for cement replacement. It converts locally sourced feedstocks into high-performing, cost-competitive cementitious materials, aiming to reduce emissions in the construction industry.
H2SITE develops on-site hydrogen production technology that enables compact systems for generating hydrogen at customer sites. The technology supports low-carbon hydrogen production and integrates production, transportation, and storage, making hydrogen transport more viable and helping unlock hydrogen markets. The company aims to help businesses reduce transportation costs and energy waste by providing efficient, on-site hydrogen solutions.
Fleetzero
Venture Round in 2022
Founded in Auburn, Alabama in 2021, Fleetzero develops a fleet of electric cargo ships to decarbonize ocean freight. Its vessels offer lower operational costs and higher reliability than traditional fossil-fuel ships.
C-Zero
Venture Round in 2022
C-Zero is a Santa Barbara-based hard-tech startup developing technology to decarbonize natural gas. It uses high temperatures to split methane into hydrogen and solid carbon, enabling emission reduction in industries like ammonia production, electric generation, and fuel cell vehicles.
Turntide Technologies
Venture Round in 2022
Turntide Technologies specializes in sustainable technologies that reduce energy consumption and operating costs in buildings, agriculture, and electric transport. It has developed an efficient electric motor system based on switched reluctance technology, managed by cloud software and connected to precise controls via IoT. The company aims to eliminate the roughly 25% of global electricity wasted by legacy motors, accelerating the transition from fossil fuels toward renewable energy. Founded in 2013 and headquartered in Sunnyvale, California, Turntide's solutions target improvements in space conditioning, maintenance, and refrigeration energy use.
Zap Energy
Series C in 2022
Zap Energy, Inc. is a Seattle-based company that specializes in the design and manufacture of sheared-flow stabilized Z-Pinch fusion reactors for power generation. Founded in 2017, the company focuses on developing compact and scalable fusion technology that offers low-carbon, cost-effective, and flexible energy solutions. Unlike conventional fusion methods, Zap Energy's approach utilizes electric current to create magnetic fields that confine and compress plasma, enhancing the stability and efficiency of the fusion process. This innovative technology aims to provide sustainable energy while requiring less capital investment compared to traditional fusion systems.
Mangrove Lithium
Series B in 2022
Mangrove Lithium is a Vancouver-based company that has developed a modular platform for producing battery-grade lithium hydroxide and carbonate efficiently from diverse input streams. Its scalable solution can be co-located with upstream producers or manufacturers, enabling cost-effective conversion of waste brines to chemicals and desalinated water.
Mission Zero
Seed Round in 2022
Mission Zero develops air capture technology that removes carbon dioxide from the atmosphere and concentrates it for sequestration pathways. The system is designed to recover historic CO2 at any scale by pulling ambient air, dissolving the carbon in a water solvent, and releasing it as a gas through electrodialysis, enabling CO2 users, project developers, engineers, and scientists to convert historic carbon waste into climate value.
Source is a developer and manufacturer of solar-powered devices that extract drinkable water from the atmosphere. Its hydro panel technology uses advanced materials science to pull water from even the driest conditions and mineralize it for delivery to taps, enabling clean water access for residential, commercial, industrial, and community use. The company was founded in 2014 and is headquartered in Scottsdale, Arizona.
SparkMeter
Venture Round in 2022
SparkMeter develops smart electricity metering systems and grid management software for underserved markets. Its products include residential and commercial meters, along with software solutions that enhance grid efficiency, enable prepaid billing, and facilitate remote monitoring. Founded in 2012, SparkMeter operates from Washington D.C. and Nairobi, Kenya.
Brimstone
Series A in 2022
Brimstone develops a carbon-negative process for producing ordinary portland cement and supplementary cementitious material. Its technology uses calcium silicate rock instead of limestone, delivering identical products at scale while significantly reducing CO2 emissions.
Heirloom is a carbon capture company developing direct air capture technology that accelerates the natural absorption of carbon dioxide. Its approach uses a limestone-based process to increase CO2 uptake and stores the captured carbon permanently underground, powered by renewable energy. The company also applies carbon capture and utilization techniques to enhance natural CO2 removal. By offering a scalable, renewable-energy driven solution, Heirloom aims to help businesses meet sustainability goals with a cost-effective path to significant carbon removal.
Our Next Energy
Series A in 2022
Our Next Energy is a developer and manufacturer of advanced energy storage technology, established in 2020 and headquartered in Novi, Michigan. The company specializes in innovative battery chemistries that prioritize safety and utilize sustainable raw materials, aiming to create a reliable and cost-effective supply chain. By employing a dual-chemistry design, Our Next Energy enhances energy density and safety, catering to mobility and grid storage applications. This approach enables original equipment manufacturers to meet market range expectations while promoting access to sustainable power solutions.
Antora Energy
Series A in 2022
Antora Energy specializes in delivering reliable, zero-carbon industrial heat and power solutions to heavy industries. The company's core technology involves thermal energy storage that absorbs excess solar and wind electricity, converting it into usable heat for industrial processes.
Rondo Energy
Series A in 2022
Rondo Energy is a company focused on providing zero-carbon industrial heat solutions. Its innovative Rondo Heat Battery captures low-cost renewable electricity and converts it into continuous high-temperature heat, allowing industrial processes to operate with reduced energy costs and eliminated emissions. By enabling clients to transition to renewable energy sources, Rondo Energy supports the decarbonization of industrial operations, contributing to a more sustainable future.
Verdox
Venture Round in 2022
Verdox is dedicated to reversing climate change through the development and deployment of advanced technology. The company’s proprietary electro-swing process, developed at MIT, enables carbon dioxide and other acid gases to be captured with up to 80% less energy and 70% less cost than conventional approaches.
Founded in 2019, H2Pro develops innovative water-splitting technology for producing hydrogen fuel. Its proprietary E-TAC method decouples hydrogen and oxygen evolution reactions, enabling efficient and sustainable green hydrogen production.
Mill Industries
Series B in 2022
Mill Industries develops and rents smart kitchen bins that chop, dry, shrink, and deodorize food waste overnight, turning it into a coffee‑ground‑like material. The system is digitally connected, allowing users to monitor usage and receive free shipping of the dried residue to a partner facility that converts it into animal feed or compost. By reducing household waste and enabling efficient recycling, the company addresses climate‑related food waste challenges.
Founded in 2021 and headquartered in Cary, North Carolina, Sustaera develops direct air capture technology. This innovative solution uses renewable energy to remove carbon dioxide directly from the air, offering scalable, low-cost systems for global clients aiming to restore the carbon balance.
Founded in 2017, ZeroAvia develops zero-emission aircraft propulsion systems designed to eliminate aviation emissions while maintaining operational efficiency. The company focuses on scalable hydrogen-electric technologies that can retrofit existing aircraft and support sustainable aviation.
DMC Biotechnologies
Series B in 2021
DMC Biotechnologies, Inc. is a biotechnology company based in Boulder, Colorado, that specializes in the development of bio-based products through microbial fermentation technology. Founded in 2014, the company focuses on engineering microbial hosts to produce a range of specialty chemicals, flavors, fragrances, nutraceuticals, natural products, and pharmaceuticals. DMC Biotechnologies employs its proprietary Dynamic Metabolic Control technology to enhance production efficiency, thereby reducing costs and accelerating the timeline from discovery to commercial performance. The company's innovative approach supports sustainability by utilizing lower energy and resource inputs in the manufacturing process.
Mangrove Lithium
Series A in 2021
Mangrove Lithium is a Vancouver-based company that has developed a modular platform for producing battery-grade lithium hydroxide and carbonate efficiently from diverse input streams. Its scalable solution can be co-located with upstream producers or manufacturers, enabling cost-effective conversion of waste brines to chemicals and desalinated water.
ClearFlame Engines
Series A in 2021
ClearFlame Engines, Inc. develops and manufactures innovative engines for heavy-duty applications, focusing on decarbonizing the industry by replacing traditional diesel engines. Established in 2016 and headquartered in Woodridge, Illinois, the company serves diverse markets, including marine, agriculture, transportation, power generation, rail, and construction. ClearFlame's patented technology allows heavy-duty engine manufacturers to produce engines that offer higher performance and lower operating costs, providing significant fuel cost savings for their customers. The company's mission is to address the environmental challenges posed by diesel fuel while enhancing engine efficiency and affordability.
Our Next Energy
Series A in 2021
Our Next Energy is a developer and manufacturer of advanced energy storage technology, established in 2020 and headquartered in Novi, Michigan. The company specializes in innovative battery chemistries that prioritize safety and utilize sustainable raw materials, aiming to create a reliable and cost-effective supply chain. By employing a dual-chemistry design, Our Next Energy enhances energy density and safety, catering to mobility and grid storage applications. This approach enables original equipment manufacturers to meet market range expectations while promoting access to sustainable power solutions.
Founded in 2011, ESS provides safe, cost-effective long-duration energy storage solutions for commercial & industrial applications, utilities, microgrids, and off-grid systems. Their patented iron-electrolyte flow cell design enables reliable clean energy integration.
Lilac Solutions
Series B in 2021
Lilac Solutions, Inc. is a mining technology company based in Oakland, California, specializing in lithium extraction technology. Founded in 2015, the company develops innovative solutions that utilize ion-exchange theory to absorb lithium from brine deposits. This technology includes ion exchange beads and continuous brine processing systems, which enable lithium producers to enhance project development, increase lithium recovery, and optimize operations. Lilac Solutions aims to support industries such as electric vehicles and renewable energy storage by providing methods that reduce both costs and environmental impact associated with lithium production.
LuxWall
Venture Round in 2021
LuxWall is a building materials company that designs and manufactures vacuum-insulated glass, a transparent insulation material that reduces heating and cooling losses and improves building energy efficiency. Its vacuum-insulated glass supports energy standards for commercial and residential buildings and uses technology aimed at enabling greater thermal performance. Founded in 2020 and headquartered in Ypsilanti, Michigan, LuxWall seeks to advance sustainable construction and has indicated a potential to reduce global carbon emissions by more than 0.5 gigatonnes per year, highlighting its environmental impact.
Yard Stick
Seed Round in 2021
Yard Stick develops a handheld device that measures soil carbon levels in real-time. This enables evidence-based regenerative farming practices, improving soil health, increasing farmer income, and combating climate change by sequestering carbon.
M2X Energy
Series A in 2021
M2X Energy is a technology company that offers automated systems for converting methane into valuable products. Its innovative, non-catalytic partial-oxidation reformer can process various feedstocks like landfill gas and biogas, helping businesses reduce greenhouse gas emissions by minimizing waste.
44.01 specializes in CO2 removal from the atmosphere by accelerating the natural weathering process in peridotite rocks, converting captured CO2 into stable minerals.
Natel Energy
Series B in 2021
Founded in 2005, Natel Energy designs, builds, and sells restoration hydro turbines for generating renewable electricity from moving water across drops. Its turbines can be installed in various settings, including retrofit of existing turbines, non-power dams, irrigation canals, and new stream reach developments. The company also offers digital services like HydroForecast, which uses satellite imagery and machine learning for hydrologic modeling and power generation forecasting.
Heart Aerospace
Series A in 2021
Heart Aerospace AB, established in 2018 with headquarters in Gothenburg, Sweden, and operations in Palo Alto, California, specializes in developing electric regional airliners certified for passenger flight. The company's mission is to facilitate swift, affordable, and sustainable travel for regional journeys worldwide. Their flagship aircraft, the ES-19, is a nineteen-passenger electric airliner designed with an operating range of 400 km, aiming to reduce fuel and maintenance costs compared to traditional aircraft while emitting zero operational emissions. Heart Aerospace targets commercial operation certification for the ES-19 by 2026.
Turntide Technologies
Convertible Note in 2021
Turntide Technologies specializes in sustainable technologies that reduce energy consumption and operating costs in buildings, agriculture, and electric transport. It has developed an efficient electric motor system based on switched reluctance technology, managed by cloud software and connected to precise controls via IoT. The company aims to eliminate the roughly 25% of global electricity wasted by legacy motors, accelerating the transition from fossil fuels toward renewable energy. Founded in 2013 and headquartered in Sunnyvale, California, Turntide's solutions target improvements in space conditioning, maintenance, and refrigeration energy use.
ZeroAvia
Venture Round in 2021
Founded in 2017, ZeroAvia develops zero-emission aircraft propulsion systems designed to eliminate aviation emissions while maintaining operational efficiency. The company focuses on scalable hydrogen-electric technologies that can retrofit existing aircraft and support sustainable aviation.
CubicPV
Venture Round in 2021
CubicPV is a solar manufacturing company that focuses on producing wafers and tandem modules using advanced silicon and perovskite technologies. The company develops innovative semiconductor combinations for tandem modules, which enhance energy harvesting by utilizing two different light absorbers, thus improving efficiency across a broader spectrum of sunlight. This technology aims to reduce the cost of solar electricity to be competitive with conventional energy sources, such as coal. By manufacturing silicon wafers directly from the silicon melt, CubicPV streamlines the production process, eliminating several steps and effectively doubling the yield. This approach not only lowers the cost of clean electricity but also minimizes the carbon footprint associated with solar panel production, supporting the growing global demand for sustainable energy solutions.
Electric Hydrogen
Series A in 2021
Electric Hydrogen is a company focused on deep decarbonization by developing low-cost, high-efficiency systems for producing fossil-free hydrogen. The company targets industrial sectors such as ammonia and steel production, which contribute significantly to global greenhouse gas emissions. By rethinking electrolysis technology from scratch, Electric Hydrogen aims to make clean hydrogen competitive with traditional methods in terms of cost and scale. Their advanced PEM (Proton Exchange Membrane) technology uses renewable electricity to generate clean hydrogen gas, reducing industrial pollution and dependence on fossil fuels. The company's leadership team brings extensive experience from pioneering clean energy companies like Tesla and First Solar, positioning Electric Hydrogen as a strong contender in the quest for zero-emission industrial processes.
Aeroseal is a company specializing in duct sealing technology that focuses on reducing carbon emissions from buildings. Its innovative approach involves using a non-toxic, water-based compound to seal gaps in the building envelope, air ducts, and vents. This technology not only enhances the comfort and health of residential and commercial spaces but also plays a significant role in promoting a cleaner environment. By effectively addressing air leakage, Aeroseal's solutions contribute to improved energy efficiency, making homes and workplaces more sustainable.