Breakthrough Energy

Breakthrough Energy is an impact investment firm based in Kirkland, Washington, established in 2016. The firm focuses on making minority investments in seed-stage, early-stage, and later-stage companies within the environmental services and cleantech sectors. Guided by scientific and technological expertise, Breakthrough Energy aims to support the development of innovative solutions that provide reliable and affordable power while addressing climate change. The firm is committed to investing patiently in transformative technologies that enhance the way people live, eat, travel, and build, ensuring that these advancements do not contribute to global warming.

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

Quinn Cornelius

Senior Director, Strategic Investments

Christian Garcia

Managing Director and Partner, Breakthrough Energy Ventures

William Gates Jr.

Co-Founder, Breakthrough Energy Coalition and Investor

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

Jack Ma

Founder and Investor

Brian Mayers Ph.D

Partner, Breakthrough Energy Ventures

Christopher Poirier

Partner, Breakthrough Energy Ventures

Juilia Reinaud

Senior Director

Cooper Rinzler Ph.D

Partner, Breakthrough Energy Ventures

Christopher Rivest

Partner, Breakthrough Energy Ventures

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 GreenTech

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.

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.

Guidewheel

Series B in 2024
Guidewheel is a developer of an AI-powered factory operations platform that helps manufacturers enhance productivity and profitability across their operations. The platform utilizes a non-intrusive approach, similar to a smartwatch, to monitor machines by analyzing their electrical signals. This allows for real-time insights into machine performance, including operational speed, activity status, and early detection of potential issues. With the integration of additional sensors, Guidewheel’s technology offers increasing value related to profitability and sustainability. Founded at Stanford University, Guidewheel has already made strides with hundreds of manufacturers, achieving an average runtime improvement of 40%. The company aims to become the leading real-time intelligence platform for the world’s factories, contributing significantly to operational efficiency and addressing climate change challenges.

Arkea Bio

Series A in 2024
Arkea Bio develops technology to cut greenhouse gas (GHG) emissions from the 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.

Heart Aerospace

Series B in 2024
Heart Aerospace AB, founded in 2018 and headquartered in Gothenburg, Sweden, with an additional location in Palo Alto, California, focuses on developing an electric regional airliner aimed at enhancing sustainable transportation for regional travel. The company's flagship aircraft, the ES-19, is designed to accommodate nineteen passengers and boasts an operational range of 400 kilometers. Heart Aerospace seeks to significantly reduce fuel and maintenance costs compared to traditional aircraft while achieving zero operational emissions. The innovative design allows for a low infrastructural footprint, facilitating the use of small airports located near city centers. Heart's objective is to secure certification for the ES-19 for commercial operations by 2026, aligning with its mission to provide affordable and environmentally friendly travel options across the globe.

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.

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.

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.

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 specializes in duct sealing technology focused on reducing carbon emissions from buildings. The company utilizes a non-toxic, water-based formula to effectively seal gaps in the building envelope, air ducts, and vents. By addressing these vulnerabilities, Aeroseal enhances the comfort and health of residential and commercial spaces while simultaneously promoting a cleaner environment.

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.

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.

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.

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.

Guidewheel

Series A in 2022
Guidewheel is a developer of an AI-powered factory operations platform that helps manufacturers enhance productivity and profitability across their operations. The platform utilizes a non-intrusive approach, similar to a smartwatch, to monitor machines by analyzing their electrical signals. This allows for real-time insights into machine performance, including operational speed, activity status, and early detection of potential issues. With the integration of additional sensors, Guidewheel’s technology offers increasing value related to profitability and sustainability. Founded at Stanford University, Guidewheel has already made strides with hundreds of manufacturers, achieving an average runtime improvement of 40%. The company aims to become the leading real-time intelligence platform for the world’s factories, contributing significantly to operational efficiency and addressing climate change challenges.

Arkea Bio

Seed Round in 2022
Arkea Bio develops technology to cut greenhouse gas (GHG) emissions from the agricultural industry.

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
RIFTis a startup on a mission towards a sustainable future that is powered by clean and renewable energy.

Terabase

Series B in 2022
Terabase Energy, Inc. is a company specializing in automation and digital solutions for utility-scale solar projects. 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. The company’s proprietary software is utilized by over 400 entities, including engineering, procurement, and construction firms, developers, and independent power producers across 28 countries. By providing technical advisory and engineering services, Terabase aims to reduce costs and accelerate the deployment of large solar projects, thereby enhancing scalability and efficiency in the solar energy sector.

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.

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 focuses on advancing sustainable technologies aimed at reducing energy consumption and operational costs across various sectors, including buildings, agriculture, and electric transport. Founded in 2013 and based in Sunnyvale, California, the company has created an innovative electric motor system that utilizes switched reluctance technology, managed through sophisticated cloud software. This system is designed to address the significant energy waste associated with traditional electric motors, which account for a substantial portion of global electricity consumption. By integrating Internet of Things (IoT) capabilities, Turntide's solutions enable clients to achieve significant savings in energy costs related to space conditioning, maintenance, and refrigeration, thereby promoting a transition to 100% renewable energy and reducing reliance on fossil fuels.

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.

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, aiming to replace fossil fuels with cleaner alternatives. The company has developed innovative thermal batteries that utilize excess electricity generated from solar and wind sources. These batteries store thermal energy by heating blocks of carbon, which can then be used to produce reliable power and heat. By integrating renewable resources into the electricity grid, Antora enables industries to achieve sustainable and dependable energy solutions while significantly reducing carbon emissions.

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.

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.

Iron Ox

Series C in 2021
Iron Ox, Inc. is a company that specializes in developing robotic systems for sustainable agriculture. Founded in 2015 and headquartered in San Carlos, California, Iron Ox operates greenhouses in Gilroy, California, and Lockhart, Texas. The company utilizes advanced plant science, machine learning, and robotics to cultivate fresh, pesticide-free produce, including a variety of leafy greens and culinary herbs. One of its key innovations is Angus, an autonomous mobile robot designed for crop harvesting. By integrating technology into farming practices, Iron Ox aims to reduce the environmental impact of agriculture while enhancing the quality and availability of fresh produce for consumers.

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.

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.

Redwood Materials

Series C in 2021
Redwood Materials, Inc. specializes in the development of innovative recycling processes aimed at creating circular supply chains for lithium-ion batteries and other electronic products. Founded by JB Straubel and based in Carson City, Nevada, the company focuses on recovering valuable materials such as lithium, nickel, copper, cobalt, and other metals from end-of-life batteries and electronics. Redwood receives approximately 10 GWh of batteries annually for recycling, which are refined and remanufactured into essential anode and cathode materials. The company is actively working to scale its production capacity to 100 GWh annually by 2025, sufficient to produce over one million electric vehicles each year. By emphasizing sustainable practices, Redwood Materials aims to reduce the environmental impact of battery production and support the growth of the electric vehicle and renewable energy storage markets.

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.

Heart Aerospace

Series A in 2021
Heart Aerospace AB, founded in 2018 and headquartered in Gothenburg, Sweden, with an additional location in Palo Alto, California, focuses on developing an electric regional airliner aimed at enhancing sustainable transportation for regional travel. The company's flagship aircraft, the ES-19, is designed to accommodate nineteen passengers and boasts an operational range of 400 kilometers. Heart Aerospace seeks to significantly reduce fuel and maintenance costs compared to traditional aircraft while achieving zero operational emissions. The innovative design allows for a low infrastructural footprint, facilitating the use of small airports located near city centers. Heart's objective is to secure certification for the ES-19 for commercial operations by 2026, aligning with its mission to provide affordable and environmentally friendly travel options across the globe.

Turntide

Convertible Note in 2021
Turntide focuses on advancing sustainable technologies aimed at reducing energy consumption and operational costs across various sectors, including buildings, agriculture, and electric transport. Founded in 2013 and based in Sunnyvale, California, the company has created an innovative electric motor system that utilizes switched reluctance technology, managed through sophisticated cloud software. This system is designed to address the significant energy waste associated with traditional electric motors, which account for a substantial portion of global electricity consumption. By integrating Internet of Things (IoT) capabilities, Turntide's solutions enable clients to achieve significant savings in energy costs related to space conditioning, maintenance, and refrigeration, thereby promoting a transition to 100% renewable energy and reducing reliance on fossil fuels.

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 specializes in duct sealing technology focused on reducing carbon emissions from buildings. The company utilizes a non-toxic, water-based formula to effectively seal gaps in the building envelope, air ducts, and vents. By addressing these vulnerabilities, Aeroseal enhances the comfort and health of residential and commercial spaces while simultaneously promoting a cleaner environment.

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.

Solidia

Venture Round in 2021
Solidia Technologies, Inc. is an advanced materials company focused on developing innovative processes for creating building and construction products, particularly in the cement and concrete industries. Founded in 2008 and based in Piscataway, New Jersey, Solidia's technology captures and stores carbon dioxide (CO2) during the production process, transforming it into a usable element that enhances product performance. By utilizing low energy processes and waste materials, Solidia's solutions significantly reduce environmental impact while offering superior performance compared to traditional cement and concrete. The company also integrates artificial intelligence into its production methods to minimize waste, improve quality control, and optimize systems, helping clients achieve lower carbon emissions and a reduced carbon footprint.

Turntide

Venture Round in 2021
Turntide focuses on advancing sustainable technologies aimed at reducing energy consumption and operational costs across various sectors, including buildings, agriculture, and electric transport. Founded in 2013 and based in Sunnyvale, California, the company has created an innovative electric motor system that utilizes switched reluctance technology, managed through sophisticated cloud software. This system is designed to address the significant energy waste associated with traditional electric motors, which account for a substantial portion of global electricity consumption. By integrating Internet of Things (IoT) capabilities, Turntide's solutions enable clients to achieve significant savings in energy costs related to space conditioning, maintenance, and refrigeration, thereby promoting a transition to 100% renewable energy and reducing reliance on fossil fuels.

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 Ltd

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.

Blip Energy

Grant in 2021
Blip Energy is focused on developing innovative battery energy storage systems to address rising peak demand and enhance the smart grid infrastructure. The company offers a smart, plug-and-play battery system that leverages artificial intelligence to help households reduce electric bills while providing essential backup power. By creating a distributed network of Internet of Things (IoT) batteries, Blip Energy aims to empower grid operators with the necessary tools and data to stabilize the grid and optimize energy costs for users. Their solutions facilitate energy management without the complexities of permitting and installation, aligning with current needs for resilience and cost savings. Blip Energy's approach supports the transition to a more sustainable, efficient, and reliable power grid for all.

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.

Boston Metal

Series B in 2021
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.

Form Energy

Series C in 2020
Form Energy, Inc. specializes in the development of long-duration energy storage systems aimed at enhancing the reliability of renewable energy sources such as wind and solar. Founded in 2017 and based in Somerville, Massachusetts, the company focuses on creating low-cost battery systems, including its innovative iron-air battery technology, which allows for energy storage over extended periods. This capability enables the dispatch of renewable energy throughout the year, effectively replacing traditional fossil fuel-based generation and contributing to the decarbonization of the electric grid. Additionally, Form Energy offers Formware, a capacity expansion software tool designed to optimize energy management. The company's technological advancements are rooted in research from MIT and are supported by various investors committed to sustainable energy solutions.

CarbonCure

Venture Round in 2020
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.

Redwood Materials

Venture Round in 2020
Redwood Materials, Inc. specializes in the development of innovative recycling processes aimed at creating circular supply chains for lithium-ion batteries and other electronic products. Founded by JB Straubel and based in Carson City, Nevada, the company focuses on recovering valuable materials such as lithium, nickel, copper, cobalt, and other metals from end-of-life batteries and electronics. Redwood receives approximately 10 GWh of batteries annually for recycling, which are refined and remanufactured into essential anode and cathode materials. The company is actively working to scale its production capacity to 100 GWh annually by 2025, sufficient to produce over one million electric vehicles each year. By emphasizing sustainable practices, Redwood Materials aims to reduce the environmental impact of battery production and support the growth of the electric vehicle and renewable energy storage markets.

Boston Materials

Convertible Note in 2020
Boston Materials, Inc. is a manufacturer of advanced composite materials, specializing in 3D reinforced carbon fiber pre-pregs. Founded in 2016 and based in Bedford, Massachusetts, the company utilizes patented Z-axis Fiber technology, which incorporates vertically aligned carbon fibers to enhance energy transfer properties. Its product line includes Carbon Supercomposite, a magnetically assembled carbon fiber pre-preg, which finds applications across various sectors such as aerospace, automotive, marine, wind energy, and sports equipment. Boston Materials' advanced materials aim to improve thermal, electrical, and mechanical properties, offering a roll-to-roll manufacturing process with in-line quality control and an annual production capacity of one million square meters. These innovations enable industries like semiconductors and electrified vehicles to achieve greater efficiency, reliability, and weight reduction while addressing critical challenges in durability and performance.

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.

Natel Energy

Venture Round in 2020
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.

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.

Form Energy

Series B in 2019
Form Energy, Inc. specializes in the development of long-duration energy storage systems aimed at enhancing the reliability of renewable energy sources such as wind and solar. Founded in 2017 and based in Somerville, Massachusetts, the company focuses on creating low-cost battery systems, including its innovative iron-air battery technology, which allows for energy storage over extended periods. This capability enables the dispatch of renewable energy throughout the year, effectively replacing traditional fossil fuel-based generation and contributing to the decarbonization of the electric grid. Additionally, Form Energy offers Formware, a capacity expansion software tool designed to optimize energy management. The company's technological advancements are rooted in research from MIT and are supported by various investors committed to sustainable energy solutions.

Commonwealth Fusion Systems

Series A in 2019
Commonwealth Fusion Systems LLC is a research and development company focused on advancing fusion energy technology to provide an inexhaustible power source. Established in 2017 and based in Cambridge, Massachusetts, the company utilizes rare-earth barium copper oxide superconductor technology to create fusion energy systems. Commonwealth Fusion Systems was spun out of the Massachusetts Institute of Technology (MIT) and collaborates with MIT’s Plasma Science and Fusion Center to leverage decades of government-funded fusion research. By integrating established physics with innovative magnet technology, the company aims to accelerate the commercialization of fusion energy, positioning itself as a key player in the transition to clean and renewable energy sources while addressing climate change challenges.

MAX

Venture Round in 2019
Max is a company that offers motorcycle taxi and transport services, focusing on addressing last-mile delivery and online retail challenges in Africa. By utilizing mobile and web platforms, Max connects consumers, retail businesses, and independent drivers in real-time, effectively removing traditional logistics and technology barriers that have hindered retail growth in the region. Additionally, Max provides subscription services for electric and low-emission vehicles aimed at commercial drivers, promoting financial freedom and wealth creation through vehicle ownership. This technology-enabled platform ensures that independent drivers have access to safe, reliable, and sustainable mobility solutions.

Baseload Capital

Venture Round in 2019
Baseload Capital is a specialized investment entity focused on the development and financing of renewable heat power and geothermal power plants. Operating globally, the company provides financial services and advisory support to heat power operators, equipping them with the necessary tools to construct and manage sustainable energy facilities. Through its efforts, Baseload Capital aims to contribute to the electrification of the planet with green electricity, fostering the transition to renewable energy sources.

Boston Metal

Series A in 2019
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.

CarbonCure

Corporate Round in 2018
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.
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