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

David Danielson

Managing Director, Breakthrough Energy Ventures

Christian Garcia

Managing Director and Partner, Breakthrough Energy Ventures

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

Partner, Breakthrough Energy Ventures

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 Sustainability

Hoofprint Biome

Series A in 2025
Hoofprint Biome is a biotechnology company that develops probiotics and natural enzymes to enhance the sustainability of ruminant livestock production. Their products improve cattle health and digestive care by reducing methane emissions, thereby enabling the livestock industry to adopt more sustainable practices through microbiome engineering.

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.

Terra CO2

Series B in 2025
Terra CO2 Technologies focuses on producing low-carbon alternatives for cement by utilizing local and abundant feedstocks from existing aggregate mines. The company specializes in high-performing, cost-competitive cementitious materials that serve as environmentally friendly substitutes for traditional cement. Through innovative manufacturing techniques, Terra CO2 aims to transform the production of these materials, thereby reducing both material and logistics costs. Their supplementary cementitious materials and zero-carbon cement undergo rigorous third-party testing to ensure performance under challenging conditions, positioning the company as a leader in offering sustainable solutions to address pressing environmental issues in the construction industry.

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.

Stoke Space

Series C in 2025
Stoke Space is dedicated to developing a fully reusable medium-lift rocket named Nova, aimed at providing cost-effective and sustainable access to space. The company focuses on creating rockets that can be reused multiple times, offering low-cost, on-demand launch services designed for daily operations. By emphasizing sustainability, Stoke Space seeks to reduce the atmospheric impact of space missions while supporting the growth of the space economy. Their vertically integrated design and manufacturing capabilities enable them to deliver reliable solutions for clients looking to launch satellites efficiently and sustainably.

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.

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.

TS Conductor

Venture Round in 2024
TS Conductor focuses on high-performance conductors designed for modern power grids, utilizing innovative transmission technology that features a carbon-fiber-composite core instead of traditional steel. This advancement results in conductors that are both lighter and stronger, enabling them to carry greater electrical currents with reduced energy loss and enhanced efficiency. The company manufactures covered conductors with an aluminum encapsulation, which safeguards the composite core from damage and corrosion. This design not only increases the capacity and reliability of electricity transmission and distribution but also promotes sustainability within the energy sector in a cost-effective manner.

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.

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.

Savor

Series A in 2024
Savor is focused on developing innovative food technology to produce high-quality, healthy, and affordable fats and oils while minimizing negative environmental impact. The company specializes in creating fats that do not rely on animals, plants, or farmland, allowing for the production of various food products such as butter, meat, cheese, milk, and ice cream. By utilizing transformational technology, Savor aims to provide consumers with better food options that are sustainable and environmentally friendly.

Savor

Seed Round in 2024
Savor is focused on developing innovative food technology to produce high-quality, healthy, and affordable fats and oils while minimizing negative environmental impact. The company specializes in creating fats that do not rely on animals, plants, or farmland, allowing for the production of various food products such as butter, meat, cheese, milk, and ice cream. By utilizing transformational technology, Savor aims to provide consumers with better food options that are sustainable and environmentally friendly.

Fourth Power

Series A in 2023
Fourth Power is an energy storage startup that specializes in thermal battery technology. The company focuses on utility-scale thermal storage, which converts wasted wind and solar energy into an on-demand power source. Its modular storage system is designed to meet immediate energy needs while also adapting to future renewable energy deployment. This flexibility enables clients to provide grid operators with control over the timing and usage of stored energy, facilitating the transition towards a fully decarbonized energy infrastructure. Fourth Power's solutions aim to enhance grid reliability by offering both short-duration and long-duration energy storage options.

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.

Yard Stick

Series A in 2023
Yard Stick specializes in measuring soil carbon to support climate-friendly agricultural practices. By addressing significant measurement challenges, the company has developed an innovative handheld device that evaluates carbon stocks and changes in real-time using VisNIR spectrometry. This technology allows for accurate detection of organic carbon levels, significantly reducing the cost of soil carbon measurement by over 90%. As a result, Yard Stick aims to enhance the adoption of evidence-based regenerative practices, which can improve soil health, increase farmers' income, and contribute to combating climate change. Through its advancements, Yard Stick seeks to create opportunities for both scientists and farmers to effectively manage soil carbon, thus facilitating a more sustainable agricultural future.

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.

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.

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.

Viridos

Series A in 2023
Viridos is a company that develops and commercializes genomic-driven solutions aimed at tackling global energy and environmental issues. It specializes in synthesizing and programming DNA to create and utilize technologies in synthetic genomics. The company designs and develops microbes for various industrial processes and environmental applications, including microbial cultivation technologies that identify novel microorganisms and new genes. Additionally, Viridos focuses on enhancing biofuel production, utilizing photosynthetic organisms to generate value-added products from sunlight and carbon dioxide, and improving the recovery rates of subsurface hydrocarbons. Its innovations also extend to the development of high-yield, disease-resistant feedstocks. Through these efforts, Viridos contributes to the production of energy, chemicals, and pharmaceuticals, while also promoting carbon sequestration and environmental remediation.

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.

Mill

Venture Round in 2023
Mill is a company focused on addressing food waste, a significant environmental challenge. It offers innovative kitchen bins that dry, shrink, and eliminate odors from leftover food, transforming waste into a compost-like material. These digitally connected bins can be rented, allowing users to efficiently manage their kitchen waste overnight. Additionally, Mill facilitates the shipping of the processed material to facilities that convert it into animal feed, thereby promoting a sustainable waste management system. Through its products and services, Mill aims to contribute to a healthier environment by providing practical solutions for reducing food waste at home.

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.

Neutral

Series A in 2022
Neutral is a carbon-neutral food company based in Portland, Oregon, established in 2018. The company focuses on creating a sustainable food ecosystem, starting with its offerings of organic milk and half-and-half. Neutral aims to reduce the carbon footprint associated with food production by utilizing a carbon-neutral process, which includes sourcing products from pasture-raised cows. Their product line not only emphasizes nutritional value, featuring high levels of omega-3 and conjugated linoleic acid (CLA), but also encourages consumers to participate in environmental sustainability by opting for products that contribute to lower carbon emissions.

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.

Terra CO2

Series A in 2022
Terra CO2 Technologies focuses on producing low-carbon alternatives for cement by utilizing local and abundant feedstocks from existing aggregate mines. The company specializes in high-performing, cost-competitive cementitious materials that serve as environmentally friendly substitutes for traditional cement. Through innovative manufacturing techniques, Terra CO2 aims to transform the production of these materials, thereby reducing both material and logistics costs. Their supplementary cementitious materials and zero-carbon cement undergo rigorous third-party testing to ensure performance under challenging conditions, positioning the company as a leader in offering sustainable solutions to address pressing environmental issues in the construction industry.

Circ

Series B in 2022
Circ is a textile recycling company based in Danville, Virginia, focused on recovering value from discarded clothing and textiles. Established in 2011, Circ employs proprietary technology to transform polycotton waste back into its original raw materials, including petroleum- and plant-based fabrics. The company aims to meet growing consumer demands for sustainability without sacrificing quality, price, or convenience. By using water as a solvent, Circ efficiently recycles various fibers, such as cotton, polyester, and nylon, and produces virgin-equivalent, market-grade dissolving pulp and petroleum monomers. These materials can be sold to manufacturers at competitive prices, promoting a circular economy in the textile industry and supporting sustainable living practices.

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.

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.

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.

Our Next Energy

Series A in 2022
Our Next Energy is a Michigan-based company founded in 2020 that specializes in developing energy storage technology aimed at enhancing access to sustainable power. The company focuses on safer battery chemistries utilizing sustainable raw materials, while ensuring a reliable, low-cost, and conflict-free supply chain. It aims to improve energy density and safety in battery technology, catering to mobility and grid storage applications. By employing a dual-chemistry design, Our Next Energy provides innovative power solutions that enable original equipment manufacturers to meet market range expectations effectively.

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.

Mill

Series B in 2022
Mill is a company focused on addressing food waste, a significant environmental challenge. It offers innovative kitchen bins that dry, shrink, and eliminate odors from leftover food, transforming waste into a compost-like material. These digitally connected bins can be rented, allowing users to efficiently manage their kitchen waste overnight. Additionally, Mill facilitates the shipping of the processed material to facilities that convert it into animal feed, thereby promoting a sustainable waste management system. Through its products and services, Mill aims to contribute to a healthier environment by providing practical solutions for reducing food waste at home.

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.

Stoke Space

Series A in 2021
Stoke Space is dedicated to developing a fully reusable medium-lift rocket named Nova, aimed at providing cost-effective and sustainable access to space. The company focuses on creating rockets that can be reused multiple times, offering low-cost, on-demand launch services designed for daily operations. By emphasizing sustainability, Stoke Space seeks to reduce the atmospheric impact of space missions while supporting the growth of the space economy. Their vertically integrated design and manufacturing capabilities enable them to deliver reliable solutions for clients looking to launch satellites efficiently and sustainably.

DMC Biotechnologies

Series B in 2021
DMC Biotechnologies, Inc. is a biotechnology company based in Boulder, Colorado, that specializes in developing bio-based products through microbial fermentation technology. Founded in 2014, the company focuses on producing specialty chemicals, flavors, fragrances, nutraceuticals, natural products, and pharmaceuticals. Utilizing its Dynamic Metabolic Control technology, DMC Biotechnologies aims to enhance the efficiency and sustainability of production processes, reducing both energy consumption and resource use. This innovative approach allows for quicker development timelines and lower costs, supporting a transition towards a more sustainable economy.

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.

TS Conductor

Series A in 2021
TS Conductor focuses on high-performance conductors designed for modern power grids, utilizing innovative transmission technology that features a carbon-fiber-composite core instead of traditional steel. This advancement results in conductors that are both lighter and stronger, enabling them to carry greater electrical currents with reduced energy loss and enhanced efficiency. The company manufactures covered conductors with an aluminum encapsulation, which safeguards the composite core from damage and corrosion. This design not only increases the capacity and reliability of electricity transmission and distribution but also promotes sustainability within the energy sector in a cost-effective manner.

Neutral

Venture Round in 2021
Neutral is a carbon-neutral food company based in Portland, Oregon, established in 2018. The company focuses on creating a sustainable food ecosystem, starting with its offerings of organic milk and half-and-half. Neutral aims to reduce the carbon footprint associated with food production by utilizing a carbon-neutral process, which includes sourcing products from pasture-raised cows. Their product line not only emphasizes nutritional value, featuring high levels of omega-3 and conjugated linoleic acid (CLA), but also encourages consumers to participate in environmental sustainability by opting for products that contribute to lower carbon emissions.

Our Next Energy

Series A in 2021
Our Next Energy is a Michigan-based company founded in 2020 that specializes in developing energy storage technology aimed at enhancing access to sustainable power. The company focuses on safer battery chemistries utilizing sustainable raw materials, while ensuring a reliable, low-cost, and conflict-free supply chain. It aims to improve energy density and safety in battery technology, catering to mobility and grid storage applications. By employing a dual-chemistry design, Our Next Energy provides innovative power solutions that enable original equipment manufacturers to meet market range expectations effectively.

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.

Yard Stick

Seed Round in 2021
Yard Stick specializes in measuring soil carbon to support climate-friendly agricultural practices. By addressing significant measurement challenges, the company has developed an innovative handheld device that evaluates carbon stocks and changes in real-time using VisNIR spectrometry. This technology allows for accurate detection of organic carbon levels, significantly reducing the cost of soil carbon measurement by over 90%. As a result, Yard Stick aims to enhance the adoption of evidence-based regenerative practices, which can improve soil health, increase farmers' income, and contribute to combating climate change. Through its advancements, Yard Stick seeks to create opportunities for both scientists and farmers to effectively manage soil carbon, thus facilitating a more sustainable agricultural future.

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.

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.

Ecocem Ireland

Venture Round in 2021
Ecocem Ireland is a cement manufacturing company that specializes in producing low-carbon cementitious products, specifically Ground Granulated Blast Furnace Slag (GGBS) and CEM III-A technology. Their eco-friendly cement is created using slag from steel furnaces through an advanced process that significantly reduces carbon emissions compared to traditional methods. This innovation allows concrete companies to decrease environmental pollutants while conserving electricity and natural resources. In addition to their manufacturing capabilities, Ecocem Ireland also offers architectural design services to their clients, who can reach the company through phone, email, and online applications.

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.

Yard Stick

Pre Seed Round in 2021
Yard Stick specializes in measuring soil carbon to support climate-friendly agricultural practices. By addressing significant measurement challenges, the company has developed an innovative handheld device that evaluates carbon stocks and changes in real-time using VisNIR spectrometry. This technology allows for accurate detection of organic carbon levels, significantly reducing the cost of soil carbon measurement by over 90%. As a result, Yard Stick aims to enhance the adoption of evidence-based regenerative practices, which can improve soil health, increase farmers' income, and contribute to combating climate change. Through its advancements, Yard Stick seeks to create opportunities for both scientists and farmers to effectively manage soil carbon, thus facilitating a more sustainable agricultural future.

Bloom Biorenewables

Seed Round in 2021
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.

C-Zero

Venture Round in 2021
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.

Terra CO2

Seed Round in 2020
Terra CO2 Technologies focuses on producing low-carbon alternatives for cement by utilizing local and abundant feedstocks from existing aggregate mines. The company specializes in high-performing, cost-competitive cementitious materials that serve as environmentally friendly substitutes for traditional cement. Through innovative manufacturing techniques, Terra CO2 aims to transform the production of these materials, thereby reducing both material and logistics costs. Their supplementary cementitious materials and zero-carbon cement undergo rigorous third-party testing to ensure performance under challenging conditions, positioning the company as a leader in offering sustainable solutions to address pressing environmental issues in the construction industry.

enVerid Systems

Series B in 2020
Enverid Systems, Inc. specializes in developing and manufacturing indoor air quality and energy-saving solutions for commercial buildings globally. The company offers HVAC load reduction modules designed to eliminate molecular contaminants, such as carbon dioxide, volatile organic compounds (VOCs), and formaldehyde from indoor air. Its technology facilitates indoor air treatment, automated regeneration, and management of outside air, enhancing both air quality and energy efficiency. Additionally, Enverid Systems provides sorbent cartridges that capture various pollutants, including VOCs and ozone. The company's products cater to a variety of environments, including schools, hospitals, residences, and transportation. Established in 2010 and based in Westwood, Massachusetts, Enverid Systems operates offices in Boston, Houston, Tampa, and Shanghai, and is a subsidiary of Tadiran Holdings Ltd.

Nature's Fynd

Series B in 2020
Nature's Fynd is a Chicago-based food company that specializes in producing a unique protein derived from a microbe found in geothermal springs. Founded in 2012 and originally known as Sustainable Bioproducts, Inc., the company focuses on creating sustainable food options that benefit both consumers and the environment. Utilizing innovative fermentation technology, Nature's Fynd is able to cultivate protein using significantly less land and water compared to conventional agricultural methods. The company also operates an additional office in Bozeman, Montana, and aims to contribute to a more sustainable food system through its revolutionary approach to protein production.

C16 Biosciences

Series A in 2020
C16 Biosciences, Inc. is a biotechnology company based in New York, established in 2017, specializing in the production of sustainable alternatives to palm oil through microbiology and fermentation processes. The firm focuses on creating innovative ingredients for food manufacturers, refiners, and consumers, aiming to decarbonize the supply chains of consumer product brands. C16 Biosciences has developed the Palmless™ platform, which features its first biodesigned ingredient, Torula oil—a premium bioactive oil known for its clinically proven benefits for skin and hair health. By leveraging biomanufacturing techniques, the company provides scalable and sustainable options, addressing the demand for environmentally friendly alternatives in the oil and fat market.

DMC Biotechnologies

Series A in 2019
DMC Biotechnologies, Inc. is a biotechnology company based in Boulder, Colorado, that specializes in developing bio-based products through microbial fermentation technology. Founded in 2014, the company focuses on producing specialty chemicals, flavors, fragrances, nutraceuticals, natural products, and pharmaceuticals. Utilizing its Dynamic Metabolic Control technology, DMC Biotechnologies aims to enhance the efficiency and sustainability of production processes, reducing both energy consumption and resource use. This innovative approach allows for quicker development timelines and lower costs, supporting a transition towards a more sustainable economy.

ESS

Series C in 2019
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.

75F

Series A in 2019
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.

Sierra Energy

Series A in 2019
Sierra Energy, founded in 2004 and headquartered in Davis, California, specializes in developing innovative technology that converts waste into energy without combustion. The company's flagship FastOx® gasification technology employs steam and oxygen to break down waste at a molecular level, producing clean syngas that can be converted into valuable products. This sustainable solution is designed to address the needs of the modern waste industry while promoting a zero-waste future. Sierra Energy actively advances its technology, testing new applications at the Sierra Energy Research Park and operating a commercial facility in Monterey County, California. By offering a reliable method for waste management, Sierra Energy aims to support local municipalities and governments in enhancing environmental protection, achieving energy independence, and generating revenue.

Arnergy

Series A in 2019
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.

Nature's Fynd

Series A in 2019
Nature's Fynd is a Chicago-based food company that specializes in producing a unique protein derived from a microbe found in geothermal springs. Founded in 2012 and originally known as Sustainable Bioproducts, Inc., the company focuses on creating sustainable food options that benefit both consumers and the environment. Utilizing innovative fermentation technology, Nature's Fynd is able to cultivate protein using significantly less land and water compared to conventional agricultural methods. The company also operates an additional office in Bozeman, Montana, and aims to contribute to a more sustainable food system through its revolutionary approach to protein production.
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