Breakthrough Energy

Breakthrough Energy, established in 2016 and headquartered in Kirkland, Washington, is an impact investment firm focused on combating climate change. It invests patiently over a 20-year period in cleantech and energy sectors, supporting companies from seed to commercialization stages. The firm's portfolio spans electricity generation and storage, transportation, industrial systems, agriculture, and energy efficiency, aiming to make power reliable, affordable, and climate-friendly. Breakthrough Energy Ventures, its investment arm, manages funds in the U.S. and Europe, with a goal to back 40 to 50 companies per fund.

Tara Bansal

Investment Principal and Company Builder, Breakthrough Energy Ventures

Jim Cabot

Managing Director, Breakthrough Energy Ventures

Priscilla Chan MD

Co-Founder, Breakthrough Energy Coalition

Christian Garcia

Managing Director and Partner, Breakthrough Energy Ventures

Bill Gates

Founder

Mark Hartney Ph.D

Principal, Breakthrough Energy Ventures

Christina Karapataki

Partner, Breakthrough Energy Ventures

Sila Kiliccote

Partner, Breakthrough Energy Ventures

Allegra Kowalewski-Ferreira

Partner, Breakthrough Energy Ventures

Phil Larochell

Principal

Phil Larochelle Ph.D

Partner, Breakthrough Energy Ventures

Brian Mayers Ph.D

Partner, Breakthrough Energy Ventures

Jeff Momplaisir

Director of Portfolio Analytics, Breakthrough Energy Ventures

Christopher Poirier

Partner, Breakthrough Energy Ventures

Juilia Reinaud

Senior Director

Cooper Rinzler

Investor

Christopher Rivest

Partner, Breakthrough Energy Ventures

Kyle Teamey

investor

Eric Toone

Executive Managing Director

Libby Wayman

Partner, Breakthrough Energy Ventures

Stefan Zlatev

Partner, Breakthrough Energy Ventures

Julia Reinaud Ph.D

Senior Director, Europe

Past deals in CleanTech

Arnergy

Series B in 2025
Arnergy is a provider of sustainable energy services focused on delivering clean and reliable energy solutions for businesses and homes. The company aims to address energy reliability issues in emerging markets by offering scalable, affordable energy systems designed to overcome challenges such as grid unreliability and intermittency. Through its products, services, and systems, Arnergy enhances business operations and improves economic outcomes for its clients, ensuring access to dependable energy resources.

Bloom Biorenewables

Series A in 2025
Bloom Biorenewables Ltd is a Swiss company founded in 2019, focused on developing technology that transforms wood and agricultural waste into renewable materials as alternatives to petroleum. The company specializes in creating bio-based materials for the chemical industry, targeting various markets including fragrances, plastics, and textiles. By introducing innovative production methods for biorenewable products and fuels, Bloom Biorenewables aims to provide sustainable solutions that reduce reliance on fossil fuels and contribute to climate change mitigation.

Aetherflux

Series A in 2025
Aetherflux is an aerospace company that designs and operates a constellation of small satellites to harvest sunlight in space, convert it into electricity, and wirelessly transmit power to ground stations. This innovative approach aims to provide reliable, renewable energy to households, businesses, and military operations worldwide, reducing environmental impact.

75F

Series B in 2025
75F, LLC, founded in 2012 and based in Burnsville, Minnesota, specializes in building automation systems that utilize Internet of Things (IoT) technology to enhance energy efficiency in commercial buildings. The company offers a comprehensive Building Energy Management System that integrates a range of smart devices, including sensors, thermostats, and control units, to optimize HVAC performance and lighting. By leveraging real-time data and wireless communication, 75F's solutions allow for precise climate control, adapting to occupancy and environmental changes to ensure comfort while minimizing energy consumption. The company's mission focuses on improving indoor air quality and occupant productivity while promoting sustainable practices. Through its intelligent automation and centralized monitoring, 75F helps clients reduce operational costs and their carbon footprint, making smart building technology accessible and effective.

INERATEC

Grant in 2025
INERATEC is a company dedicated to developing sustainable energy solutions through the production of innovative synthetic fuels and power-to-X plants. By focusing on replacing fossil fuels with carbon-neutral alternatives, INERATEC aims to contribute to a post-fossil fuel economy. The company specializes in generating renewable hydrogen and converting greenhouse gases, such as carbon dioxide and hydrogen, into various synthetic products, including e-kerosene, carbon dioxide-neutral diesel, synthetic waxes, and methanol. These products enable chemical plant operators to utilize synthetic fuels, which are derived from climate-neutral energy sources, thereby minimizing chemical waste and enhancing climate protection.

Mangrove Lithium

Venture Round in 2025
Mangrove Lithium, based in Vancouver, has developed a modular and scalable refining technology for the efficient production of battery-grade lithium hydroxide and carbonate from a variety of input streams. This innovative platform allows for the direct conversion of lithium chloride and lithium sulfate into high-quality lithium products. The technology can be adapted to different capacities and is designed to be co-located with upstream lithium producers, as well as cathode and cell manufacturers. Additionally, Mangrove’s platform is being commercialized for the conversion of waste brines into valuable chemicals and desalinated water, contributing to more sustainable practices in the lithium supply chain.

H2SITE

Series B in 2025
H2SITE is a company focused on developing renewable technologies for on-site hydrogen production. Its innovative systems and membranes are designed to facilitate high efficiency and purity in hydrogen generation, particularly for applications such as separation and ammonia cracking. H2SITE's compact technology not only optimizes the production of low-carbon hydrogen but also enhances the viability of hydrogen transport, thereby unlocking opportunities in the global hydrogen market. By enabling businesses to produce hydrogen on-site, H2SITE helps reduce transportation costs and minimizes energy waste, positioning itself as a key player in the transition to sustainable energy solutions.

Deep Sky

Grant in 2024
Deep Sky specializes in developing infrastructure for carbon dioxide removal aimed at mitigating the carbon footprint. The company provides large-scale CO2 capture and storage services powered by renewable energy. This enables various sectors, including compliance, voluntary markets, and government procurement, to effectively monetize premium carbon dioxide removal credits while utilizing natural environmental resources. Through its innovative approach, Deep Sky aims to facilitate a transition to more sustainable practices and contribute to global carbon reduction efforts.

HyperHeat

Pre Seed Round in 2024
HyperHeat is developing an innovative all-electric heating solution capable of achieving temperatures up to 2,000°C, utilizing renewable electricity to provide an efficient alternative to fossil fuel combustion. With an impressive efficiency rate of up to 98%, HyperHeat's technology is particularly suited for retrofitting industrial processes, facilitating significant reductions in CO2 emissions across sectors such as steel, cement, and chemicals. The scalable nature of the technology offers a cost-effective means to decarbonize thermal processes, with the potential to lower global CO2 emissions by over 4.5 gigatons annually. Currently operating in stealth mode, HyperHeat aims to support energy-intensive industries in their transition to zero carbon emissions, addressing the urgent challenge of climate change.

NitroVolt

Seed Round in 2024
NitroVolt is focused on decarbonizing nitrogen-based fertilizer production and enhancing the resilience of the agricultural sector through an innovative synthesis process. The company addresses the environmental impact of traditional ammonia production, which contributes significantly to global greenhouse gas emissions. NitroVolt's solution enables farmers to generate their own nitrogen-based fertilizers directly at their locations using only air, water, and electricity. Their patented electrochemical Nitrolyzer unit allows for on-demand ammonia production, harnessing renewable energy sources and eliminating the need for transportation logistics. By offering a decentralized production method, NitroVolt aims to reduce the carbon footprint of fertilizer production and empower farmers to manage their fertilizer needs sustainably.

LuxWall

Series B in 2024
LuxWall is a building materials company that pioneers the design and manufacture of vacuum-insulated glass. LuxWall produces glass that acts as transparent insulation, providing thermal insulation values comparable to fiberglass wall insulation. With widespread adoption, LuxWall's patented technology has the potential to reduce global carbon emissions by more than 0.5 gigatonnes per year. The company was founded in 2020 and is headquartered in Ypsilanti, Michigan, United States.

RedoxBlox

Series A in 2024
RedoxBlox specializes in thermochemical energy storage technology aimed at decarbonizing high-temperature industrial thermal processing and enhancing natural gas power production. By providing a cost-effective alternative to fossil fuels, the company enables continuous energy discharge at high temperatures, significantly reducing carbon and nitrogen oxide emissions. Its system is designed to integrate seamlessly with existing infrastructure, improving grid resilience while supporting industrial processors and power plant operators. RedoxBlox's technology facilitates the electrification and storage of energy, allowing industries to harness renewable energy sources through large-scale, long-duration energy storage solutions.

KoBold Metals

Series C in 2024
KoBold Metals operates as an AI-powered mineral exploration company focused on discovering materials essential for the electric vehicle and renewable energy sectors. The company utilizes advanced software that aggregates and structures extensive scientific datasets, including geochemical, geophysical, and geological information. By applying various analytical techniques such as ensemble machine learning and computer vision, KoBold predicts subsurface compositions in a statistically valid manner. This innovative approach enhances the exploration efficiency for mineral resources, particularly cobalt, which is crucial for the electric vehicle industry. By merging ore-deposit science with big data and scientific computing, KoBold Metals aims to identify new sources of cobalt and support the sustainable supply chain for emerging technologies.

Dandelion Energy

Series C in 2024
Dandelion Energy, Inc. is a Palo Alto, California-based company founded in 2017 that specializes in affordable geothermal heating and cooling solutions. The company replaces traditional air conditioning and heating systems with an innovative home geothermal system that utilizes a powerful heat pump and underground pipes to transfer heat between the earth and the residence. This system is designed to harness thermal energy from below the earth's surface to regulate indoor temperatures and provide hot water, allowing homeowners to transition from conventional heating fuels to a more sustainable geothermal alternative. Dandelion Energy is committed to making renewable heating and cooling accessible and cost-effective for homeowners.

ZeroAvia

Series C in 2024
ZeroAvia, Inc. is a company focused on developing zero-emission aircraft and hydrogen-electric propulsion systems aimed at transforming short-haul commercial aviation. Established in 2017 and headquartered in Hollister, California, with an additional office in Cranfield, United Kingdom, ZeroAvia is dedicated to eliminating aviation emissions while maintaining operational efficiency. The company's innovative powertrain utilizes a hydrogen fuel-cell system, allowing for retrofitting of existing aircraft and facilitating the adoption of sustainable aviation practices. By emphasizing scalable technologies, ZeroAvia seeks to partner with various stakeholders in the aviation industry to provide cleaner, more efficient flight options, thereby reducing costs and carbon dioxide emissions associated with air travel.

Graphyte

Series A in 2024
Graphyte offers carbon removal services by utilizing a carbon casting technology.

Type One Energy Group

Seed Round in 2024
Type One Energy Group is dedicated to delivering sustainable and affordable fusion power. Established in 2019 by a team of renowned fusion scientists and experienced business leaders, the company focuses on developing advanced stellarator fusion energy systems. Utilizing proven manufacturing techniques, modern computational physics, and high-field superconducting magnets, Type One Energy aims to create optimized reactor designs. Its FusionDirect development program seeks to establish a fusion power plant within the next decade through a low-risk, efficient approach that emphasizes partnerships and capital efficiency. By advancing fusion technology, Type One Energy aspires to provide reliable and abundant power to meet global energy demands.

44.01

Series A in 2024
44.01 is a company focused on the permanent elimination of carbon dioxide from the atmosphere through a process of mineralization in peridotite, a rock known for its natural ability to absorb CO2. By employing advanced technology, 44.01 accelerates the weathering process, transforming captured carbon dioxide into solid rock, thereby ensuring its safe and efficient removal from the environment. The company's services are designed to assist various industries in achieving their carbon reduction goals while contributing to the ongoing efforts to combat climate change.

Rondo Energy

Grant in 2024
Rondo Energy specializes in providing zero-carbon industrial heat through its innovative Rondo Heat Battery. This technology captures low-cost renewable electricity and converts it into continuous high-temperature heat, enabling industrial clients to power their operations while significantly reducing energy costs and eliminating carbon emissions. By focusing on renewable energy management, Rondo Energy aims to facilitate the decarbonization of industrial processes, making sustainable energy solutions more accessible and effective for various sectors.

Planted Solar

Series A in 2024
Planted Solar is a developer focused on transforming the solar power landscape through an innovative platform that enhances the design and installation of solar power plants. By leveraging development software and construction robots, the company creates high-density, all-terrain power plants on land that was previously deemed unsuitable for solar energy production. This approach allows Planted Solar to generate twice the energy per acre and complete projects three times faster than traditional methods. The company aims to empower businesses and corporations to manage their energy consumption more efficiently, contributing to a cleaner and more sustainable energy future. Backed by prominent investors such as Breakthrough Energy Ventures and Khosla Ventures, Planted Solar is dedicated to accelerating the deployment of solar energy solutions globally.

Prolific Machines

Series B in 2024
Prolific Machines is a biotechnology company based in San Francisco, California, founded in 2020. It specializes in developing advanced cell technologies aimed at transforming the production of cells for sustainable applications, particularly in the cultivated meat industry. The company focuses on high-scale precision cell-differentiation techniques that enhance the efficiency, quality, reproducibility, and sustainability of cell production. Additionally, Prolific Machines is engaged in research and development efforts related to clean meat and cell therapies, utilizing innovative approaches to create better sustainable options. Through its work, the company aims to promote a healthier future for both humanity and the planet.

Xcimer

Series A in 2024
Xcimer Energy is a California-based company focused on developing laser-driven fusion technology to generate affordable, carbon-free energy. Founded in 2021 and headquartered in Redwood City, it aims to transform the energy sector by integrating low-cost excimer laser technology with the HYLIFE reaction chamber concept. This innovative approach is designed to create a scalable Inertial Fusion Energy system that addresses longstanding challenges in achieving viable fusion power. By utilizing the only experimentally proven controlled fusion reaction, Xcimer Energy seeks to enable efficient electrical power generation, contributing to a more sustainable energy future.

Reactive Technologies

Series D in 2024
Reactive Technologies LTD is an energy technology company based in London, United Kingdom, focused on facilitating the transition to clean energy through innovative solutions for grid operators, electric utilities, and renewable asset owners. The company offers a range of advanced technologies, including GridMetrix, which provides real-time inertia measurements for transmission system operators, and GridMetrix for distribution network operators, which measures system strength and helps manage constraints. Its Tradenergy platform enhances forecasting, risk management, and optimization for energy flexibility, while the Dynamic PPA feature allows generators to capitalize on market opportunities and mitigate price risks. Reactive Technologies is recognized for its groundbreaking Grid-Sonar™ technology, which delivers precise data on grid operations, thereby improving planning and maximizing electricity supply utilization. Established in 2010, the company has expanded its reach internationally, with commercial offices in the UK, USA, and Australia, and an R&D center in Finland.

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 a company focused on developing a sustainable technology that captures and transforms methane emissions into organic fertilizer, addressing significant environmental issues associated with methane and synthetic fertilizers. Founded in 2022 and based in San Mateo, California, Windfall Bio utilizes methane-eating microbes to convert methane from various sources, including agriculture, oil and gas, and waste management, into valuable soil nutrients. This innovative solution not only helps industries reduce their methane footprint but also enhances operational efficiency and profitability, benefiting the planet and consumers alike. The company is backed by prominent venture capital firms, demonstrating strong investor confidence in its mission to tackle climate change through nature-based agricultural technology.

Mission Zero Technologies

Series A in 2024
Mission Zero specializes in developing direct air capture technology that effectively removes carbon dioxide from the atmosphere and concentrates it for various sequestration pathways. The company's innovative system allows for the efficient recovery of historic carbon dioxide at any scale. By utilizing a process that involves pulling air into a device and dissolving the carbon in a water solvent, Mission Zero can release the carbon as gas through electrodialysis. This technology not only facilitates the production of low-energy and clean carbon dioxide but also aims to provide affordable carbon capture services, contributing to an environment with reduced air pollution.

Lilac Solutions

Series C in 2024
Lilac Solutions, Inc. is a mining technology company focused on lithium extraction, providing innovative technology and services to lithium producers. The company specializes in ion exchange beads and continuous brine processing systems, which enable the efficient production of high-purity lithium solutions from various brine resources. This technology, grounded in ion-exchange theory, allows lithium producers to enhance project development, improve lithium recovery rates, and optimize operational efficiency while also minimizing costs and environmental impact. Lilac Solutions serves industries such as electric vehicles and renewable energy storage. Incorporated in 2015, the company is headquartered in Oakland, California.

Equilibrium Energy

Funding Round in 2023
Equilibrium Energy is focused on transforming the energy sector by developing an energy management platform that optimizes energy consumption and reduces costs. The company operates within the power value chain, addressing challenges related to grid variability and market volatility. By offering advanced solutions, Equilibrium Energy empowers users to enhance their energy efficiency and sustainability. Their platform enables customers to achieve significant cost savings while contributing to a greener future. Through innovative technologies and a commitment to clean energy, Equilibrium Energy aims to reshape the industry and position itself as a leader in energy management.

Malta

Venture Round in 2023
Malta Inc. is a company that specializes in industrial-grade, grid-scale energy storage solutions, particularly through its innovative electro-thermal energy storage technology. Founded in 2018 and based in Cambridge, Massachusetts, Malta's system captures energy from various sources, including renewable (wind and solar) and fossil fuel generators. The process involves converting electrical energy into thermal energy, which is stored in molten salt and later reconverted back into electricity using a heat engine. This technology addresses the challenges of energy curtailment by improving the synchronization of energy generation with demand, thereby facilitating the efficient distribution of electricity to the grid as required. Malta was incubated at the Moonshot Factory and has garnered support from leading venture capital and commercial power industry stakeholders, contributing to its mission of enabling affordable and reliable electricity delivery.

NitroVolt

Grant in 2023
NitroVolt is focused on decarbonizing nitrogen-based fertilizer production and enhancing the resilience of the agricultural sector through an innovative synthesis process. The company addresses the environmental impact of traditional ammonia production, which contributes significantly to global greenhouse gas emissions. NitroVolt's solution enables farmers to generate their own nitrogen-based fertilizers directly at their locations using only air, water, and electricity. Their patented electrochemical Nitrolyzer unit allows for on-demand ammonia production, harnessing renewable energy sources and eliminating the need for transportation logistics. By offering a decentralized production method, NitroVolt aims to reduce the carbon footprint of fertilizer production and empower farmers to manage their fertilizer needs sustainably.

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.

ZeroAvia

Series C in 2023
ZeroAvia, Inc. is a company focused on developing zero-emission aircraft and hydrogen-electric propulsion systems aimed at transforming short-haul commercial aviation. Established in 2017 and headquartered in Hollister, California, with an additional office in Cranfield, United Kingdom, ZeroAvia is dedicated to eliminating aviation emissions while maintaining operational efficiency. The company's innovative powertrain utilizes a hydrogen fuel-cell system, allowing for retrofitting of existing aircraft and facilitating the adoption of sustainable aviation practices. By emphasizing scalable technologies, ZeroAvia seeks to partner with various stakeholders in the aviation industry to provide cleaner, more efficient flight options, thereby reducing costs and carbon dioxide emissions associated with air travel.

Boston Metal

Series C in 2023
Boston Metal is a metallurgy company focused on reducing the carbon footprint of steel production through its innovative Molten Oxide Electrolysis (MOE) technology. Established in 2012 as a spin-off from MIT, the company has developed an industrial-scale solution that enables the efficient and cost-effective production of a diverse range of metals and alloys. Utilizing an electrolytic cell, Boston Metal processes raw iron ore to create ferroalloys, which are essential for producing various grades of steel. The company's advancements in MOE technology have resulted in a significant scaling of production capabilities, achieving a 1,000-fold increase and generating thousands of kilograms of metal. Headquartered in Woburn, Massachusetts, Boston Metal aims to provide a greener alternative for the metal industry by leveraging its unique process and a variety of feedstocks.

Rondo Energy

Series B in 2023
Rondo Energy specializes in providing zero-carbon industrial heat through its innovative Rondo Heat Battery. This technology captures low-cost renewable electricity and converts it into continuous high-temperature heat, enabling industrial clients to power their operations while significantly reducing energy costs and eliminating carbon emissions. By focusing on renewable energy management, Rondo Energy aims to facilitate the decarbonization of industrial processes, making sustainable energy solutions more accessible and effective for various sectors.

Equilibrium Energy

Series A in 2023
Equilibrium Energy is focused on transforming the energy sector by developing an energy management platform that optimizes energy consumption and reduces costs. The company operates within the power value chain, addressing challenges related to grid variability and market volatility. By offering advanced solutions, Equilibrium Energy empowers users to enhance their energy efficiency and sustainability. Their platform enables customers to achieve significant cost savings while contributing to a greener future. Through innovative technologies and a commitment to clean energy, Equilibrium Energy aims to reshape the industry and position itself as a leader in energy management.

Dioxycle

Series A in 2023
Dioxycle focuses on developing innovative technology for the conversion of carbon dioxide emissions into valuable chemical products. The company utilizes electricity-driven processes to transform carbon dioxide into a resource, enabling the production of everyday items while reducing reliance on fossil feedstocks like carbon monoxide, methane, and hydrocarbons. By offering solutions for industrial carbon dioxide emissions, Dioxycle aims to contribute to environmental sustainability and the transition towards cleaner energy sources.

Aeroseal

Series B in 2023
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. offers innovative technology that allows concrete producers to sequester waste carbon dioxide (CO2) into their products, effectively transforming it into a solid mineral during the concrete manufacturing process. By sourcing CO2 from industrial emitters, the company enables manufacturers to create greener and stronger concrete without compromising on quality or price. This retrofit technology not only enhances the performance characteristics of traditional concrete but also helps producers tap into the growing green building market. CarbonCure's solutions are designed to provide material, environmental, and production advantages while reducing the overall carbon footprint associated with concrete production. The company, incorporated in 2007 and headquartered in Dartmouth, Canada, also supports its clients with marketing and environmental reporting services to strengthen their competitive position in the industry.

KoBold Metals

Series B in 2023
KoBold Metals operates as an AI-powered mineral exploration company focused on discovering materials essential for the electric vehicle and renewable energy sectors. The company utilizes advanced software that aggregates and structures extensive scientific datasets, including geochemical, geophysical, and geological information. By applying various analytical techniques such as ensemble machine learning and computer vision, KoBold predicts subsurface compositions in a statistically valid manner. This innovative approach enhances the exploration efficiency for mineral resources, particularly cobalt, which is crucial for the electric vehicle industry. By merging ore-deposit science with big data and scientific computing, KoBold Metals aims to identify new sources of cobalt and support the sustainable supply chain for emerging technologies.

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

Series A in 2023
VEIR is focused on advancing electricity transmission through the development of high-temperature superconductors and innovative cooling solutions. The company has created a passive evaporative cryogenic cooling technology that significantly enhances cooling efficiency, delivering 20 times more cooling power per kilogram of nitrogen flow compared to traditional mechanical subcooling methods. By utilizing commercial superconducting tape, VEIR's technology facilitates power delivery at transmission levels over distribution-scale infrastructure without resistive losses. This approach allows clients to streamline permitting processes and create economically viable electric transmission lines, thereby addressing the challenges associated with cooling high-temperature superconductors.

Type One Energy Group

Seed Round in 2023
Type One Energy Group is dedicated to delivering sustainable and affordable fusion power. Established in 2019 by a team of renowned fusion scientists and experienced business leaders, the company focuses on developing advanced stellarator fusion energy systems. Utilizing proven manufacturing techniques, modern computational physics, and high-field superconducting magnets, Type One Energy aims to create optimized reactor designs. Its FusionDirect development program seeks to establish a fusion power plant within the next decade through a low-risk, efficient approach that emphasizes partnerships and capital efficiency. By advancing fusion technology, Type One Energy aspires to provide reliable and abundant power to meet global energy demands.

Windfall Bio

Seed Round in 2023
Windfall Bio is a company focused on developing a sustainable technology that captures and transforms methane emissions into organic fertilizer, addressing significant environmental issues associated with methane and synthetic fertilizers. Founded in 2022 and based in San Mateo, California, Windfall Bio utilizes methane-eating microbes to convert methane from various sources, including agriculture, oil and gas, and waste management, into valuable soil nutrients. This innovative solution not only helps industries reduce their methane footprint but also enhances operational efficiency and profitability, benefiting the planet and consumers alike. The company is backed by prominent venture capital firms, demonstrating strong investor confidence in its mission to tackle climate change through nature-based agricultural technology.

ClearFlame Engines

Series B in 2023
ClearFlame Engines, Inc. is a company that develops and manufactures engines specifically designed for heavy-duty applications, including markets such as marine, agriculture, transportation, power generation, rail, and construction. Founded in 2016 and headquartered in Woodridge, Illinois, ClearFlame has created a patented system that replaces traditional diesel engines, aiming to decarbonize heavy-duty engines while reducing operating costs. This innovative technology allows heavy-duty engine manufacturers to produce engines that offer higher performance and fuel cost savings, addressing the challenges posed by reliance on diesel fuel.

Stratus Materials

Series A in 2023
Stratus Materials is a developer and manufacturer of advanced cathode active materials specifically designed for lithium-ion batteries. The company specializes in manganese-rich, cobalt-free materials, which provide a favorable balance of performance, safety, cost-effectiveness, and environmental sustainability. By focusing on these innovative materials, Stratus Materials aims to enhance the performance of electric vehicle batteries and support the growing demand for efficient energy storage solutions.

PeakSyncer

Seed Round in 2023
PeakSyncer, a subsidiary of Zhong Xi Group, LLC, specializes in an AI-powered cloud platform designed to optimize energy management for utility companies. The platform leverages artificial intelligence to automate and streamline demand response programs, helping utilities manage peak energy loads more effectively. Key features include real-time reporting, seamless data tracking, integration with existing infrastructure, and synchronization across ERP and CRM systems. PeakSyncer's scalable solution empowers utilities to meet regulatory requirements, create sustainable energy ecosystems, and engage customers in demand response initiatives. The company offers dedicated support and 24/7 monitoring to ensure reliable, user-friendly solutions that adapt to evolving energy grid needs.

Rumin8

Seed Round in 2023
Rumin8 is focused on addressing methane emissions from livestock, a significant contributor to climate change, accounting for 3.7% of global greenhouse gas emissions. The company has developed a technology that reduces methane emissions from cattle by up to 95% by transforming natural anti-methane compounds found in plants into dietary supplements for livestock. This innovation not only decreases emissions but also enhances the efficiency of animal digestion and provides more energy for growth. Rumin8 aims to decarbonize millions of cattle worldwide, thereby advancing the global food system towards a more sustainable and climate-friendly future.

LuxWall

Venture Round in 2023
LuxWall is a building materials company that pioneers the design and manufacture of vacuum-insulated glass. LuxWall produces glass that acts as transparent insulation, providing thermal insulation values comparable to fiberglass wall insulation. With widespread adoption, LuxWall's patented technology has the potential to reduce global carbon emissions by more than 0.5 gigatonnes per year. The company was founded in 2020 and is headquartered in Ypsilanti, Michigan, United States.

Kodama Systems

Seed Round in 2022
Kodama Systems specializes in developing technology aimed at restoring forests and enhancing forest management practices. The company's innovative solutions are designed to streamline in-field operations and increase the resilience of forests, ultimately contributing to carbon sequestration. By employing a comprehensive approach, Kodama Systems improves productivity in forest thinning and facilitates greater access to labor. Their technology provides valuable feedback and insights through simulations, on-equipment functionality, teleoperation, and integration testing. This enables industries such as construction and mining to effectively tackle the climate challenges posed by wildfires and carbon emissions.

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.

Dandelion Energy

Series B in 2022
Dandelion Energy, Inc. is a Palo Alto, California-based company founded in 2017 that specializes in affordable geothermal heating and cooling solutions. The company replaces traditional air conditioning and heating systems with an innovative home geothermal system that utilizes a powerful heat pump and underground pipes to transfer heat between the earth and the residence. This system is designed to harness thermal energy from below the earth's surface to regulate indoor temperatures and provide hot water, allowing homeowners to transition from conventional heating fuels to a more sustainable geothermal alternative. Dandelion Energy is committed to making renewable heating and cooling accessible and cost-effective for homeowners.

Othersphere

Pre Seed Round in 2022
Operator of a SaaS platform intended to accelerate the decarbonization of physical commodity sectors. The company's platform helps to find profitable and sustainable locations for the deployment of zero and low greenhouse gas industrial technologies, enabling companies and businesses to reduce greenhouse gas emissions trajectories and have cost-effective access to unique market insights.

RIFT

Seed Round in 2022
RIFT is a startup focused on advancing sustainability through clean and renewable energy solutions. The company has developed Iron Fuel Technology, which aims to significantly reduce the global carbon footprint in energy-intensive sectors. This innovative fuel offers a reliable source of fully renewable heat throughout the year, enabling industries with high energy consumption to actively participate in global decarbonization efforts. RIFT's commitment to sustainable practices positions it as a key player in the transition towards a greener future.

LanzaJet

Grant in 2022
LanzaJet is a company dedicated to producing sustainable aviation fuels (SAF) aimed at reducing the environmental impact of the aviation industry. By utilizing innovative technology, LanzaJet converts non-recyclable waste into low-carbon fuels, providing a cleaner alternative to traditional fossil fuels. The company's approach aligns with the principles of the circular economy, emphasizing the importance of sustainability and waste reduction. Through its efforts, LanzaJet seeks to significantly lower greenhouse gas emissions in aviation, contributing to a more sustainable future for air travel.

Molten Industries

Seed Round in 2022
Molten Industries focuses on developing clean technology aimed at decarbonizing the hydrogen market. The company provides a cost-effective and environmentally friendly method for hydrogen production, which allows chemical and heavy industries to significantly reduce their carbon emissions. Through its innovative solutions, Molten Industries contributes to the transition towards sustainable energy practices.

Electra

Venture Round in 2022
Electra is dedicated to reducing carbon dioxide emissions in the iron and steel production industry through innovative electrochemical and hydrometallurgical processes. The company has developed alternative steelmaking technology that aims to electrify and decarbonize the production process, allowing for the creation of low-carbon clean iron from various ores. By utilizing renewable energy sources, Electra enables steel producers to lower energy intensity and costs, contributing to a more sustainable approach to steelmaking.

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
Fervo Energy, founded in 2017 and based in San Francisco, California, specializes in the development and commercialization of next-generation geothermal power technology. The company focuses on owning, developing, and operating geothermal assets to generate clean, carbon-free energy in new locations. By leveraging innovations in geoscience, Fervo Energy aims to accelerate the transition to a sustainable energy future, positioning itself as a key player in the evolution of the electric grid. Its proprietary technology serves as a dispatchable foundation for achieving a fully clean energy system, enabling clients to enhance productivity and scalability in energy production.

Terabase

Series B in 2022
Terabase Energy, Inc. is a technology company focused on enhancing the efficiency and scalability of utility-scale solar projects through automation and digital solutions. Founded in 2019 and headquartered in Berkeley, California, with an additional office in Melbourne, Australia, Terabase offers a cloud-based artificial intelligence platform that facilitates collaboration on digital project models. Its proprietary software is utilized by over 400 firms, including engineering, procurement, and construction companies, developers, and independent power producers across 28 countries. By providing innovative tools and services, Terabase aims to reduce costs and accelerate the deployment of large-scale solar energy projects, thereby supporting the growth of renewable energy infrastructure worldwide.

Blue Frontier

Series A in 2022
Blue Frontier, founded in 2018 and based in Fort Lauderdale, Florida, focuses on innovative air conditioning systems that prioritize sustainability, comfort, and energy efficiency. The company has developed technology that significantly reduces energy consumption compared to traditional air conditioning systems. By integrating energy storage capabilities, Blue Frontier's air conditioners can optimize electricity usage, drawing power during periods of high renewable energy availability without compromising cooling performance. This approach allows customers to benefit from reduced energy bills and supports new HVAC-as-a-Service business models. The systems are designed to require less than half the electricity of conventional air conditioners, contributing to overall energy savings and a reduced environmental impact.

SOURCE

Series D in 2022
SOURCE, founded in 2014 and based in Scottsdale, Arizona, specializes in developing and manufacturing solar-powered devices aimed at extracting drinkable water from the atmosphere. Their innovative hydro panels employ advanced materials science to harvest water even in arid conditions, producing pure, mineralized water that is accessible via a tap. This technology caters to a wide range of applications, including industrial, commercial, residential, and community use, ensuring clean water availability virtually anywhere.

ReMo Energy

Seed Round in 2022
ReMo Energy is a manufacturer that specializes in industrial materials, focusing on the development of distributed scale green ammonia plants. These facilities produce nitrogen fertilizers using renewable electricity, air, and water, thereby replacing traditional fossil fuel methods. Employing predictive modeling and innovative vegetation development techniques, ReMo Energy harnesses local renewable energy sources to create green chemicals. This approach not only addresses the ammonia market's challenges related to food security and climate change but also optimizes the utilization of intermittent renewable energy resources.

H2SITE

Series A in 2022
H2SITE is a company focused on developing renewable technologies for on-site hydrogen production. Its innovative systems and membranes are designed to facilitate high efficiency and purity in hydrogen generation, particularly for applications such as separation and ammonia cracking. H2SITE's compact technology not only optimizes the production of low-carbon hydrogen but also enhances the viability of hydrogen transport, thereby unlocking opportunities in the global hydrogen market. By enabling businesses to produce hydrogen on-site, H2SITE helps reduce transportation costs and minimizes energy waste, positioning itself as a key player in the transition to sustainable energy solutions.

FleetZero

Venture Round in 2022
Fleetzero, established in 2021 in Auburn, Alabama, is focused on developing a fleet of battery-electric cargo ships aimed at decarbonizing ocean freight. The company designs zero-emission vessels that can be constructed affordably in domestic shipyards, allowing operations in regulated markets where local shipbuilding is required. These electric ships promise lower operational costs and improved reliability compared to traditional fossil-fuel vessels, providing clients with an efficient and sustainable alternative for marine transportation. By facilitating significant reductions in fuel, maintenance, and crew expenses, Fleetzero seeks to transform the freight industry while adhering to environmental standards.

C-Zero

Venture Round in 2022
C-Zero is a hard-tech startup based in Santa Barbara, California, focused on developing innovative technology to decarbonize natural gas. The company utilizes high-temperature catalytic systems to decompose methane, the main component of natural gas, into hydrogen and solid carbon. This process aims to eliminate carbon dioxide emissions associated with energy production. C-Zero's hydrogen can be applied across various industries, including ammonia production, electric generation, process heating, and fuel cell vehicles, potentially addressing up to 75% of global CO2 emissions. By providing a solution for energy companies to reduce their emissions while maintaining low-cost energy availability, C-Zero is positioned to make a significant impact on climate change and energy sustainability.

Turntide

Venture Round in 2022
Turntide is a company focused on creating sustainable technologies aimed at reducing energy consumption and operational expenses in various sectors, including buildings, agriculture, and electric transportation. Founded in 2013 and headquartered in Sunnyvale, California, Turntide has developed an innovative electric motor system that utilizes advanced switched reluctance technology. This system is managed by sophisticated cloud software and incorporates IoT connectivity for precise control. By targeting the significant energy waste attributed to traditional electric motors, Turntide aims to support the shift away from fossil fuels and promote a more sustainable future. The company's efforts are geared towards eliminating the 25% of global electricity consumption that is currently wasted, thereby accelerating the transition to 100% renewable energy.

Zap Energy

Series C in 2022
Zap Energy, Inc., founded in 2017 and headquartered in Seattle, Washington, specializes in the design and manufacture of sheared-flow stabilized Z-Pinch fusion reactors for power generation. The company’s innovative technology utilizes electric currents to create magnetic fields that confine and compress plasma, enabling efficient energy production through nuclear fusion. This approach offers a low-carbon, cost-effective, and flexible power source while requiring less capital investment compared to traditional fusion methods. By focusing on compact and scalable fusion technology, Zap Energy aims to advance sustainable energy solutions and improve the economics of fusion energy.

Mangrove Lithium

Series B in 2022
Mangrove Lithium, based in Vancouver, has developed a modular and scalable refining technology for the efficient production of battery-grade lithium hydroxide and carbonate from a variety of input streams. This innovative platform allows for the direct conversion of lithium chloride and lithium sulfate into high-quality lithium products. The technology can be adapted to different capacities and is designed to be co-located with upstream lithium producers, as well as cathode and cell manufacturers. Additionally, Mangrove’s platform is being commercialized for the conversion of waste brines into valuable chemicals and desalinated water, contributing to more sustainable practices in the lithium supply chain.

Mission Zero Technologies

Seed Round in 2022
Mission Zero specializes in developing direct air capture technology that effectively removes carbon dioxide from the atmosphere and concentrates it for various sequestration pathways. The company's innovative system allows for the efficient recovery of historic carbon dioxide at any scale. By utilizing a process that involves pulling air into a device and dissolving the carbon in a water solvent, Mission Zero can release the carbon as gas through electrodialysis. This technology not only facilitates the production of low-energy and clean carbon dioxide but also aims to provide affordable carbon capture services, contributing to an environment with reduced air pollution.

SOURCE

Series D in 2022
SOURCE, founded in 2014 and based in Scottsdale, Arizona, specializes in developing and manufacturing solar-powered devices aimed at extracting drinkable water from the atmosphere. Their innovative hydro panels employ advanced materials science to harvest water even in arid conditions, producing pure, mineralized water that is accessible via a tap. This technology caters to a wide range of applications, including industrial, commercial, residential, and community use, ensuring clean water availability virtually anywhere.

Brimstone

Series A in 2022
Brimstone is a company that has developed a carbon-negative process for producing ordinary Portland cement and supplementary cementitious material. Founded in 2019 and based in Oakland, California, Brimstone's innovative technology employs carbon-free calcium silicate rock instead of traditional limestone, resulting in a product that matches the performance of conventional materials while remaining cost-competitive at scale. This advancement aims to provide the construction industry with a cleaner and more sustainable alternative to traditional cement production methods.

Heirloom

Series A in 2022
Heirloom specializes in direct air capture technology aimed at enhancing the natural absorption of carbon dioxide from the atmosphere. The company's innovative system accelerates the ability of limestone to capture CO2, allowing for its permanent storage underground. By operating on renewable energy, Heirloom's technology promotes carbon capture and utilization at a large scale, with the goal of removing significant amounts of atmospheric CO2. This approach not only minimizes secondary impacts but also supports clients in restoring the atmosphere through natural processes.

Antora Energy

Series A in 2022
Antora Energy specializes in providing zero-carbon industrial heat and power solutions for heavy industries, offering a more reliable alternative to fossil fuels. The company develops innovative thermal batteries that utilize excess solar and wind electricity to heat blocks of carbon, creating a sustainable energy source. These thermal energy storage systems effectively convert heat energy into electric energy, facilitating the electrification of heavy industry. By enabling the integration of renewable resources into the electricity grid, Antora Energy aims to deliver convenient, sustainable, and reliable electricity while significantly reducing carbon emissions on a global scale.

KoBold Metals

Series B in 2022
KoBold Metals operates as an AI-powered mineral exploration company focused on discovering materials essential for the electric vehicle and renewable energy sectors. The company utilizes advanced software that aggregates and structures extensive scientific datasets, including geochemical, geophysical, and geological information. By applying various analytical techniques such as ensemble machine learning and computer vision, KoBold predicts subsurface compositions in a statistically valid manner. This innovative approach enhances the exploration efficiency for mineral resources, particularly cobalt, which is crucial for the electric vehicle industry. By merging ore-deposit science with big data and scientific computing, KoBold Metals aims to identify new sources of cobalt and support the sustainable supply chain for emerging technologies.

Rondo Energy

Series A in 2022
Rondo Energy specializes in providing zero-carbon industrial heat through its innovative Rondo Heat Battery. This technology captures low-cost renewable electricity and converts it into continuous high-temperature heat, enabling industrial clients to power their operations while significantly reducing energy costs and eliminating carbon emissions. By focusing on renewable energy management, Rondo Energy aims to facilitate the decarbonization of industrial processes, making sustainable energy solutions more accessible and effective for various sectors.

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.

Sustaera

Series A in 2021
Sustaera, founded in 2021 and based in Cary, North Carolina, specializes in direct air capture technology that effectively removes carbon dioxide from the atmosphere. The company's innovative approach utilizes renewable energy and leverages existing supply chains to offer low-cost and scalable carbon removal systems. Sustaera aims to provide clients worldwide with solutions that not only remove carbon but also allow for its replacement and reuse, contributing to a cleaner and more sustainable future. Their technology is adaptable to various environments, including grasslands, arid deserts, and tropical savannas, facilitating its deployment across diverse geographical regions.

ZeroAvia

Series B in 2021
ZeroAvia, Inc. is a company focused on developing zero-emission aircraft and hydrogen-electric propulsion systems aimed at transforming short-haul commercial aviation. Established in 2017 and headquartered in Hollister, California, with an additional office in Cranfield, United Kingdom, ZeroAvia is dedicated to eliminating aviation emissions while maintaining operational efficiency. The company's innovative powertrain utilizes a hydrogen fuel-cell system, allowing for retrofitting of existing aircraft and facilitating the adoption of sustainable aviation practices. By emphasizing scalable technologies, ZeroAvia seeks to partner with various stakeholders in the aviation industry to provide cleaner, more efficient flight options, thereby reducing costs and carbon dioxide emissions associated with air travel.

Mangrove Lithium

Series A in 2021
Mangrove Lithium, based in Vancouver, has developed a modular and scalable refining technology for the efficient production of battery-grade lithium hydroxide and carbonate from a variety of input streams. This innovative platform allows for the direct conversion of lithium chloride and lithium sulfate into high-quality lithium products. The technology can be adapted to different capacities and is designed to be co-located with upstream lithium producers, as well as cathode and cell manufacturers. Additionally, Mangrove’s platform is being commercialized for the conversion of waste brines into valuable chemicals and desalinated water, contributing to more sustainable practices in the lithium supply chain.

ClearFlame Engines

Series A in 2021
ClearFlame Engines, Inc. is a company that develops and manufactures engines specifically designed for heavy-duty applications, including markets such as marine, agriculture, transportation, power generation, rail, and construction. Founded in 2016 and headquartered in Woodridge, Illinois, ClearFlame has created a patented system that replaces traditional diesel engines, aiming to decarbonize heavy-duty engines while reducing operating costs. This innovative technology allows heavy-duty engine manufacturers to produce engines that offer higher performance and fuel cost savings, addressing the challenges posed by reliance on diesel fuel.

ESS

Post in 2021
ESS is a long-duration energy storage company that specializes in iron flow battery technology, providing solutions for commercial, industrial, utility, microgrid, and off-grid applications. Established in 2011, ESS aims to support a future powered by clean and reliable energy. The company utilizes an innovative energy management system that features a safe and non-toxic iron-electrolyte combined with a patented flow cell design. This approach allows ESS to deliver high-performance energy storage at a lower cost, making its technology suitable for a wide range of applications from retail energy management to utility-scale renewable energy integration. With a team experienced in distributed power generation and energy storage technologies, ESS is well-positioned to contribute to the growing demand for sustainable energy solutions.

Lilac Solutions

Series B in 2021
Lilac Solutions, Inc. is a mining technology company focused on lithium extraction, providing innovative technology and services to lithium producers. The company specializes in ion exchange beads and continuous brine processing systems, which enable the efficient production of high-purity lithium solutions from various brine resources. This technology, grounded in ion-exchange theory, allows lithium producers to enhance project development, improve lithium recovery rates, and optimize operational efficiency while also minimizing costs and environmental impact. Lilac Solutions serves industries such as electric vehicles and renewable energy storage. Incorporated in 2015, the company is headquartered in Oakland, California.

LuxWall

Venture Round in 2021
LuxWall is a building materials company that pioneers the design and manufacture of vacuum-insulated glass. LuxWall produces glass that acts as transparent insulation, providing thermal insulation values comparable to fiberglass wall insulation. With widespread adoption, LuxWall's patented technology has the potential to reduce global carbon emissions by more than 0.5 gigatonnes per year. The company was founded in 2020 and is headquartered in Ypsilanti, Michigan, United States.

M2X Energy

Series A in 2021
M2X Energy is a technology company focused on converting methane into valuable products, particularly through its automated gas-to-product systems. The company employs a non-catalytic, partial-oxidation reformer approach to produce low-carbon methanol from various methane-rich feedstocks, such as landfill gas, biogas, and well gas. By minimizing gas flaring, M2X Energy aims to reduce environmental impact and provide essential climate services, enabling businesses to transform waste natural gas into useful products while contributing to climate protection efforts.

Reactive Technologies

Venture Round in 2021
Reactive Technologies LTD is an energy technology company based in London, United Kingdom, focused on facilitating the transition to clean energy through innovative solutions for grid operators, electric utilities, and renewable asset owners. The company offers a range of advanced technologies, including GridMetrix, which provides real-time inertia measurements for transmission system operators, and GridMetrix for distribution network operators, which measures system strength and helps manage constraints. Its Tradenergy platform enhances forecasting, risk management, and optimization for energy flexibility, while the Dynamic PPA feature allows generators to capitalize on market opportunities and mitigate price risks. Reactive Technologies is recognized for its groundbreaking Grid-Sonar™ technology, which delivers precise data on grid operations, thereby improving planning and maximizing electricity supply utilization. Established in 2010, the company has expanded its reach internationally, with commercial offices in the UK, USA, and Australia, and an R&D center in Finland.

44.01

Seed Round in 2021
44.01 is a company focused on the permanent elimination of carbon dioxide from the atmosphere through a process of mineralization in peridotite, a rock known for its natural ability to absorb CO2. By employing advanced technology, 44.01 accelerates the weathering process, transforming captured carbon dioxide into solid rock, thereby ensuring its safe and efficient removal from the environment. The company's services are designed to assist various industries in achieving their carbon reduction goals while contributing to the ongoing efforts to combat climate change.

Redwood Materials

Series C in 2021
Redwood Materials, Inc. is a Nevada-based company focused on advancing sustainable battery recycling technologies to create a circular supply chain for lithium-ion batteries. Founded by JB Straubel in 2017, Redwood specializes in the recycling and processing of end-of-life batteries and electronics to recover critical materials such as lithium, nickel, cobalt, copper, and various metals. The company currently receives approximately 10 GWh of used batteries annually and aims to scale its production of anode and cathode materials to 100 GWh by 2025, sufficient for manufacturing over one million electric vehicles each year. By providing environmentally sound solutions for recycling and refining, Redwood supports industries including electric vehicles, renewable energy storage, and consumer electronics, thereby contributing to a reduction in the environmental impact of battery production and usage.

Natel Energy

Series B in 2021
Natel Energy, Inc. develops and sells restoration hydro turbines (RHTs) designed for low head settings to generate renewable electricity from various water sources, including existing low dams, irrigation canals, and streams. These turbines can be installed in existing infrastructure, improving the efficiency of older units and ensuring compliance with environmental standards. The company also offers digital services that enhance operational efficiency and reduce risks for hydropower stakeholders, utilizing machine learning and remote sensing technologies. Additionally, Natel Energy provides HydroForecast, which employs satellite imagery and advanced modeling to deliver accurate hydrological forecasts. Founded in 2005 and based in Alameda, California, Natel Energy aims to support the transition to sustainable energy through innovative hydropower solutions that contribute to a low-carbon grid.

75F

Series A in 2021
75F, LLC, founded in 2012 and based in Burnsville, Minnesota, specializes in building automation systems that utilize Internet of Things (IoT) technology to enhance energy efficiency in commercial buildings. The company offers a comprehensive Building Energy Management System that integrates a range of smart devices, including sensors, thermostats, and control units, to optimize HVAC performance and lighting. By leveraging real-time data and wireless communication, 75F's solutions allow for precise climate control, adapting to occupancy and environmental changes to ensure comfort while minimizing energy consumption. The company's mission focuses on improving indoor air quality and occupant productivity while promoting sustainable practices. Through its intelligent automation and centralized monitoring, 75F helps clients reduce operational costs and their carbon footprint, making smart building technology accessible and effective.

Turntide

Convertible Note in 2021
Turntide is a company focused on creating sustainable technologies aimed at reducing energy consumption and operational expenses in various sectors, including buildings, agriculture, and electric transportation. Founded in 2013 and headquartered in Sunnyvale, California, Turntide has developed an innovative electric motor system that utilizes advanced switched reluctance technology. This system is managed by sophisticated cloud software and incorporates IoT connectivity for precise control. By targeting the significant energy waste attributed to traditional electric motors, Turntide aims to support the shift away from fossil fuels and promote a more sustainable future. The company's efforts are geared towards eliminating the 25% of global electricity consumption that is currently wasted, thereby accelerating the transition to 100% renewable energy.

ZeroAvia

Venture Round in 2021
ZeroAvia, Inc. is a company focused on developing zero-emission aircraft and hydrogen-electric propulsion systems aimed at transforming short-haul commercial aviation. Established in 2017 and headquartered in Hollister, California, with an additional office in Cranfield, United Kingdom, ZeroAvia is dedicated to eliminating aviation emissions while maintaining operational efficiency. The company's innovative powertrain utilizes a hydrogen fuel-cell system, allowing for retrofitting of existing aircraft and facilitating the adoption of sustainable aviation practices. By emphasizing scalable technologies, ZeroAvia seeks to partner with various stakeholders in the aviation industry to provide cleaner, more efficient flight options, thereby reducing costs and carbon dioxide emissions associated with air travel.

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 developing low-cost, high-efficiency, fossil-free hydrogen systems aimed at decarbonizing industrial sectors such as ammonia and steel production, which are significant contributors to global greenhouse gas emissions. By rethinking electrolysis, Electric Hydrogen seeks to make clean hydrogen competitive with traditional, fossil-fuel-based hydrogen in terms of cost and scalability. The company's advanced PEM technology utilizes low-cost renewable electricity to produce clean hydrogen gas, thereby helping industries reduce their reliance on fossil fuels and minimize pollution. With a leadership team experienced in transformative clean energy companies, Electric Hydrogen is positioned to address current challenges in efficiency and cost, contributing to the goal of a zero-emission industrial sector in the near future.

Aeroseal

Series A in 2021
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.

WeaveGrid

Series A in 2021
WeaveGrid is a technology company focused on facilitating the integration of electric vehicles (EV) with the power grid. By employing machine learning, optimization, and predictive analytics, WeaveGrid's software addresses the challenges associated with EV-grid integration for utility companies. This innovative solution not only enhances the incorporation of renewable energy resources but also aims to reduce costs for utility customers. The company's efforts support the broader goals of decarbonization in the transportation and power sectors, enabling utilities to safely and economically adapt to the growing demand for electric vehicles.

Heirloom

Pre Seed Round in 2021
Heirloom specializes in direct air capture technology aimed at enhancing the natural absorption of carbon dioxide from the atmosphere. The company's innovative system accelerates the ability of limestone to capture CO2, allowing for its permanent storage underground. By operating on renewable energy, Heirloom's technology promotes carbon capture and utilization at a large scale, with the goal of removing significant amounts of atmospheric CO2. This approach not only minimizes secondary impacts but also supports clients in restoring the atmosphere through natural processes.

Fervo Energy

Series B in 2021
Fervo Energy, founded in 2017 and based in San Francisco, California, specializes in the development and commercialization of next-generation geothermal power technology. The company focuses on owning, developing, and operating geothermal assets to generate clean, carbon-free energy in new locations. By leveraging innovations in geoscience, Fervo Energy aims to accelerate the transition to a sustainable energy future, positioning itself as a key player in the evolution of the electric grid. Its proprietary technology serves as a dispatchable foundation for achieving a fully clean energy system, enabling clients to enhance productivity and scalability in energy production.

ZeroAvia

Series A in 2021
ZeroAvia, Inc. is a company focused on developing zero-emission aircraft and hydrogen-electric propulsion systems aimed at transforming short-haul commercial aviation. Established in 2017 and headquartered in Hollister, California, with an additional office in Cranfield, United Kingdom, ZeroAvia is dedicated to eliminating aviation emissions while maintaining operational efficiency. The company's innovative powertrain utilizes a hydrogen fuel-cell system, allowing for retrofitting of existing aircraft and facilitating the adoption of sustainable aviation practices. By emphasizing scalable technologies, ZeroAvia seeks to partner with various stakeholders in the aviation industry to provide cleaner, more efficient flight options, thereby reducing costs and carbon dioxide emissions associated with air travel.

VEIR

Series A in 2021
VEIR is focused on advancing electricity transmission through the development of high-temperature superconductors and innovative cooling solutions. The company has created a passive evaporative cryogenic cooling technology that significantly enhances cooling efficiency, delivering 20 times more cooling power per kilogram of nitrogen flow compared to traditional mechanical subcooling methods. By utilizing commercial superconducting tape, VEIR's technology facilitates power delivery at transmission levels over distribution-scale infrastructure without resistive losses. This approach allows clients to streamline permitting processes and create economically viable electric transmission lines, thereby addressing the challenges associated with cooling high-temperature superconductors.

Turntide

Venture Round in 2021
Turntide is a company focused on creating sustainable technologies aimed at reducing energy consumption and operational expenses in various sectors, including buildings, agriculture, and electric transportation. Founded in 2013 and headquartered in Sunnyvale, California, Turntide has developed an innovative electric motor system that utilizes advanced switched reluctance technology. This system is managed by sophisticated cloud software and incorporates IoT connectivity for precise control. By targeting the significant energy waste attributed to traditional electric motors, Turntide aims to support the shift away from fossil fuels and promote a more sustainable future. The company's efforts are geared towards eliminating the 25% of global electricity consumption that is currently wasted, thereby accelerating the transition to 100% renewable energy.
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