Prelude Ventures

LuxWall is a building materials company that designs and manufactures vacuum-insulated glass, a transparent insulation material that reduces heating and cooling losses and improves building energy efficiency. Its vacuum-insulated glass supports energy standards for commercial and residential buildings and uses technology aimed at enabling greater thermal performance. Founded in 2020 and headquartered in Ypsilanti, Michigan, LuxWall seeks to advance sustainable construction and has indicated a potential to reduce global carbon emissions by more than 0.5 gigatonnes per year, highlighting its environmental impact.

RedoxBlox develops thermochemical energy storage technology to decarbonize high-temperature industrial thermal processing and provide long-duration energy storage for the grid. The technology enables continuous high-temperature heat while integrating with existing infrastructure to replace natural gas combustion, supporting electrification and renewables deployment. It reduces carbon dioxide and nitrogen oxides emissions, enhances safety and resilience, and aims to lower total capital cost for industrial processors and power plant operators. By delivering scalable, long-duration heat, RedoxBlox helps industries leverage renewable energy and move toward low-emission operations.

Form Energy, Inc. is a company focused on developing long-duration energy storage systems aimed at transforming the electric grid by enabling the reliable use of renewable energy sources such as wind and solar. Established in 2017 and based in Somerville, Massachusetts, Form Energy is known for its innovative iron-air battery technology, which allows for the storage of electricity over extended periods, making renewable energy more dispatchable throughout the year. This technology not only helps to replace conventional fossil fuel-based generation but also enhances transmission capacity without the need for new infrastructure. By facilitating deep decarbonization of the electric system, Form Energy plays a significant role in reducing carbon emissions and promoting a sustainable energy future.

Vaulted Deep specializes in innovative waste management solutions. It employs patented geologic slurry injection technology to permanently sequester organic wastes underground, achieving significant carbon dioxide removal while promoting local environmental health.

Brightband is a software company specializing in advanced, end-to-end Earth System AI for enhanced weather and climate decision-making. Its platform, powered by AI technology, offers personalized predictions and access to observational data and forecasts, empowering individuals to adapt to and manage weather changes effectively.

Graphyte offers carbon removal services by utilizing a carbon casting technology.

Xcimer Energy is an innovative company focused on developing laser-driven fusion technology to deliver affordable, abundant, and carbon-free energy. Founded in 2021 and based in Redwood City, California, Xcimer integrates low-cost excimer laser technology with the HYLIFE reaction chamber concept to create a scalable Inertial Fusion Energy (IFE) system. This approach addresses significant challenges that have historically hindered the viability of fusion power, enabling the application of experimentally proven controlled fusion reactions for electrical power generation. By transforming the energy marketplace, Xcimer aims to provide a sustainable energy solution that can meet growing global demands.

Windfall Bio is an innovative company based in San Mateo, California, that addresses climate change by transforming harmful methane emissions into organic fertilizer. Established in 2022, the company utilizes methane-eating microbes to capture methane from various sources, including agriculture, oil and gas, and waste management. This nature-based technology not only reduces the methane footprint of these industries but also improves their operational efficiency and profitability while minimizing the negative environmental impacts associated with synthetic fertilizers. By providing farmers and other producers with the means to convert methane into valuable soil nutrients, Windfall Bio fosters a sustainable agricultural future and contributes positively to environmental conservation. The company is backed by prominent venture capital firms, reflecting its potential to make a significant impact in the fight against climate change.

Lightship is an early-stage hardware startup founded in 2020 by former Tesla employees, based in San Francisco. The company is focused on revolutionizing the recreational vehicle (RV) industry, which is valued at $26 billion, by developing an aerodynamic, battery-powered trailer. This innovative vehicle aims to provide an environmentally friendly alternative to traditional gas-powered RVs, alleviating issues such as noise, emissions, and range anxiety. By prioritizing sustainability, Lightship seeks to enhance outdoor travel experiences while promoting the preservation of nature. The company’s approach allows travelers to reduce fuel costs and minimize their environmental impact, making it easier to explore the outdoors responsibly.

Founded in 2018, Quaise is an innovative energy company based in Cambridge, Massachusetts. It specializes in developing and commercializing advanced millimeter-wave drilling systems to access geothermal energy sources worldwide, overcoming geographical limitations.

Electric Hydrogen is a company focused on deep decarbonization by developing low-cost, high-efficiency systems for producing fossil-free hydrogen. The company targets industrial sectors such as ammonia and steel production, which contribute significantly to global greenhouse gas emissions. By rethinking electrolysis technology from scratch, Electric Hydrogen aims to make clean hydrogen competitive with traditional methods in terms of cost and scale. Their advanced PEM (Proton Exchange Membrane) technology uses renewable electricity to generate clean hydrogen gas, reducing industrial pollution and dependence on fossil fuels. The company's leadership team brings extensive experience from pioneering clean energy companies like Tesla and First Solar, positioning Electric Hydrogen as a strong contender in the quest for zero-emission industrial processes.

Boston Metal is a metallurgy company specializing in reducing the carbon footprint of steel production. It offers industrial-scale solutions using its Molten Oxide Electrolysis (MOE) process, enabling greener and more efficient metal production.

Ebb Carbon specializes in atmospheric carbon dioxide removal via a reverse electrochemical process that enhances the ocean's natural ability to store CO2 safely while reducing acidity. This innovative approach offers potential scalability and affordability.

Rumin8 is addressing a critical environmental challenge by targeting methane emissions from livestock, which account for approximately 3.7% of global greenhouse gas emissions. The company has developed a groundbreaking technology that significantly reduces methane emissions from cattle by up to 95% by harnessing and transforming natural anti-methane compounds found in plants into dietary supplements for livestock. This innovation not only curtails methane production but also enhances the efficiency of the animals’ digestive systems, thereby providing them with more energy for growth. Rumin8's mission is to decarbonize millions of cattle worldwide, contributing to a more sustainable and climate-favorable food system to meet the dietary needs of a growing global population.

LuxWall is a building materials company that designs and manufactures vacuum-insulated glass, a transparent insulation material that reduces heating and cooling losses and improves building energy efficiency. Its vacuum-insulated glass supports energy standards for commercial and residential buildings and uses technology aimed at enabling greater thermal performance. Founded in 2020 and headquartered in Ypsilanti, Michigan, LuxWall seeks to advance sustainable construction and has indicated a potential to reduce global carbon emissions by more than 0.5 gigatonnes per year, highlighting its environmental impact.

Form Energy, Inc. is a company focused on developing long-duration energy storage systems aimed at transforming the electric grid by enabling the reliable use of renewable energy sources such as wind and solar. Established in 2017 and based in Somerville, Massachusetts, Form Energy is known for its innovative iron-air battery technology, which allows for the storage of electricity over extended periods, making renewable energy more dispatchable throughout the year. This technology not only helps to replace conventional fossil fuel-based generation but also enhances transmission capacity without the need for new infrastructure. By facilitating deep decarbonization of the electric system, Form Energy plays a significant role in reducing carbon emissions and promoting a sustainable energy future.

Founded in 2017, Fervo Energy specializes in developing and operating geothermal assets using proprietary technology. Based in San Francisco, the company generates clean power through innovative geoscience methods, aiming to provide a dispatchable foundation for a 100% clean energy future.

Lightship is an early-stage hardware startup founded in 2020 by former Tesla employees, based in San Francisco. The company is focused on revolutionizing the recreational vehicle (RV) industry, which is valued at $26 billion, by developing an aerodynamic, battery-powered trailer. This innovative vehicle aims to provide an environmentally friendly alternative to traditional gas-powered RVs, alleviating issues such as noise, emissions, and range anxiety. By prioritizing sustainability, Lightship seeks to enhance outdoor travel experiences while promoting the preservation of nature. The company’s approach allows travelers to reduce fuel costs and minimize their environmental impact, making it easier to explore the outdoors responsibly.

Rumin8 is addressing a critical environmental challenge by targeting methane emissions from livestock, which account for approximately 3.7% of global greenhouse gas emissions. The company has developed a groundbreaking technology that significantly reduces methane emissions from cattle by up to 95% by harnessing and transforming natural anti-methane compounds found in plants into dietary supplements for livestock. This innovation not only curtails methane production but also enhances the efficiency of the animals’ digestive systems, thereby providing them with more energy for growth. Rumin8's mission is to decarbonize millions of cattle worldwide, contributing to a more sustainable and climate-favorable food system to meet the dietary needs of a growing global population.

Electric Hydrogen is a company focused on deep decarbonization by developing low-cost, high-efficiency systems for producing fossil-free hydrogen. The company targets industrial sectors such as ammonia and steel production, which contribute significantly to global greenhouse gas emissions. By rethinking electrolysis technology from scratch, Electric Hydrogen aims to make clean hydrogen competitive with traditional methods in terms of cost and scale. Their advanced PEM (Proton Exchange Membrane) technology uses renewable electricity to generate clean hydrogen gas, reducing industrial pollution and dependence on fossil fuels. The company's leadership team brings extensive experience from pioneering clean energy companies like Tesla and First Solar, positioning Electric Hydrogen as a strong contender in the quest for zero-emission industrial processes.

Latitude Media is a B2B news, research, and events company specializing in clean energy and climate technology. It provides actionable coverage and market analysis to help investors, utilities, energy firms, and startups navigate the evolving energy transition landscape.

Founded in 2018, Quaise is an innovative energy company based in Cambridge, Massachusetts. It specializes in developing and commercializing advanced millimeter-wave drilling systems to access geothermal energy sources worldwide, overcoming geographical limitations.

Sense Labs, Inc. is a technology company based in Cambridge, Massachusetts, specializing in home energy monitoring solutions. Established in 2013, the company develops and manufactures electronic devices that analyze electricity usage in households. Its flagship product, Sense, utilizes current sensors installed on main breakers to capture the electronic signatures of various appliances. This system employs advanced algorithms to identify and differentiate individual devices, providing users with insights into their energy consumption. Sense also offers a range of related products, including Sense Solar, add-on sensors, and various replacement components. The data collected by these devices is transmitted to users via a dedicated mobile application, enhancing the home automation experience.

Recurrent Motors, Inc. specializes in analyzing electric vehicle (EV) batteries and providing detailed reports that assist car dealers and private buyers in purchasing used electric cars. Founded in 2020 and based in Seattle, Washington, the company offers tools that assess battery health, life expectancy, and current maximum range of EVs, addressing the complexities involved in understanding these factors as vehicles age. By delivering non-invasive tests and leveraging a national database of vehicle data and history, Recurrent enables informed decision-making for both dealers and consumers. Additionally, the company provides personalized monthly battery analyses for EV owners, enhancing their understanding of their vehicles' performance over time.

Living Carbon is a public benefit corporation based in San Francisco, California, founded in 2019 by Maddie Hall and Patrick Mellor. The company leverages advanced biotechnology to enhance the natural ability of plants, particularly trees, to capture and store carbon dioxide (CO2). By improving photosynthesis, inhibiting photorespiration, increasing growth rates, and shortening tree growing cycles, Living Carbon aims to create more durable wood for building and manufacturing applications while addressing climate change. The company's ultimate goal is to restore balance to the planet's metabolic processes through innovative forest biotechnology solutions.

Founded in 2018, Quaise is an innovative energy company based in Cambridge, Massachusetts. It specializes in developing and commercializing advanced millimeter-wave drilling systems to access geothermal energy sources worldwide, overcoming geographical limitations.

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.

LuxWall is a building materials company that designs and manufactures vacuum-insulated glass, a transparent insulation material that reduces heating and cooling losses and improves building energy efficiency. Its vacuum-insulated glass supports energy standards for commercial and residential buildings and uses technology aimed at enabling greater thermal performance. Founded in 2020 and headquartered in Ypsilanti, Michigan, LuxWall seeks to advance sustainable construction and has indicated a potential to reduce global carbon emissions by more than 0.5 gigatonnes per year, highlighting its environmental impact.

Form Energy, Inc. is a company focused on developing long-duration energy storage systems aimed at transforming the electric grid by enabling the reliable use of renewable energy sources such as wind and solar. Established in 2017 and based in Somerville, Massachusetts, Form Energy is known for its innovative iron-air battery technology, which allows for the storage of electricity over extended periods, making renewable energy more dispatchable throughout the year. This technology not only helps to replace conventional fossil fuel-based generation but also enhances transmission capacity without the need for new infrastructure. By facilitating deep decarbonization of the electric system, Form Energy plays a significant role in reducing carbon emissions and promoting a sustainable energy future.

Founded in 2010, Pivot Bio is a biotechnology company specializing in microbial nitrogen fertilizers. It harnesses naturally occurring microbes to provide nutrients to crops sustainably, aiming to reduce the need for petrochemical fertilizers and improve crop yield.

Electric Hydrogen is a company focused on deep decarbonization by developing low-cost, high-efficiency systems for producing fossil-free hydrogen. The company targets industrial sectors such as ammonia and steel production, which contribute significantly to global greenhouse gas emissions. By rethinking electrolysis technology from scratch, Electric Hydrogen aims to make clean hydrogen competitive with traditional methods in terms of cost and scale. Their advanced PEM (Proton Exchange Membrane) technology uses renewable electricity to generate clean hydrogen gas, reducing industrial pollution and dependence on fossil fuels. The company's leadership team brings extensive experience from pioneering clean energy companies like Tesla and First Solar, positioning Electric Hydrogen as a strong contender in the quest for zero-emission industrial processes.

Encycle Corporation specializes in wireless electrical demand management solutions for commercial and industrial facilities. Based in Toronto with offices in California and the UK, the company offers automated demand response controllers that manage peak electrical demand across various building equipment types. Their products are installed directly or via distributors in California and New York, serving clients such as retail stores, office buildings, distribution centers, and food processing plants. Encycle's strategic partnership with Ayla Networks enhances its product offerings. Founded in 2005, the company changed its name from REGEN Energy Inc. to Encycle Corporation in 2015.

Heirloom is a carbon capture company developing direct air capture technology that accelerates the natural absorption of carbon dioxide. Its approach uses a limestone-based process to increase CO2 uptake and stores the captured carbon permanently underground, powered by renewable energy. The company also applies carbon capture and utilization techniques to enhance natural CO2 removal. By offering a scalable, renewable-energy driven solution, Heirloom aims to help businesses meet sustainability goals with a cost-effective path to significant carbon removal.

Boston Metal is a metallurgy company specializing in reducing the carbon footprint of steel production. It offers industrial-scale solutions using its Molten Oxide Electrolysis (MOE) process, enabling greener and more efficient metal production.

Recurrent Motors, Inc. specializes in analyzing electric vehicle (EV) batteries and providing detailed reports that assist car dealers and private buyers in purchasing used electric cars. Founded in 2020 and based in Seattle, Washington, the company offers tools that assess battery health, life expectancy, and current maximum range of EVs, addressing the complexities involved in understanding these factors as vehicles age. By delivering non-invasive tests and leveraging a national database of vehicle data and history, Recurrent enables informed decision-making for both dealers and consumers. Additionally, the company provides personalized monthly battery analyses for EV owners, enhancing their understanding of their vehicles' performance over time.

Form Energy, Inc. is a company focused on developing long-duration energy storage systems aimed at transforming the electric grid by enabling the reliable use of renewable energy sources such as wind and solar. Established in 2017 and based in Somerville, Massachusetts, Form Energy is known for its innovative iron-air battery technology, which allows for the storage of electricity over extended periods, making renewable energy more dispatchable throughout the year. This technology not only helps to replace conventional fossil fuel-based generation but also enhances transmission capacity without the need for new infrastructure. By facilitating deep decarbonization of the electric system, Form Energy plays a significant role in reducing carbon emissions and promoting a sustainable energy future.

Natron Energy develops sodium ion battery technologies for various industrial applications. Founded in 2012, the company specializes in stationary energy storage solutions, including UPS systems, electric vehicle charging, and grid support.

Lime operates a smart mobility fleet comprising electric scooters and pedal bikes, aiming to provide sustainable first- and last-mile transportation solutions. The company partners with cities worldwide to offer affordable, convenient, and eco-friendly travel alternatives.

Founded in 2010, Pivot Bio is a biotechnology company specializing in microbial nitrogen fertilizers. It harnesses naturally occurring microbes to provide nutrients to crops sustainably, aiming to reduce the need for petrochemical fertilizers and improve crop yield.

AMP Robotics Corporation specializes in designing and manufacturing robotic systems for material recovery facilities and recycling operations, focusing on automating the identification, sorting, and processing of complex waste streams. The company's flagship product, AMP Cortex, utilizes advanced robotics and computer vision technology to efficiently pick and sort recyclable materials, significantly lowering sorting costs. Additionally, AMP Neuron, a software solution, captures and analyzes material data to identify features in a manner similar to human perception. By leveraging artificial intelligence and machine learning, AMP Robotics enhances recycling processes for various waste types, including municipal solid waste and e-waste. The modular design of its systems allows for easy integration into existing infrastructure, minimizing disruption and capital investment. Founded in 2014 and headquartered in Louisville, Colorado, AMP Robotics has formed strategic partnerships to further its mission of improving recycling rates and economic recovery of recyclables.

Form Energy, Inc. is a company focused on developing long-duration energy storage systems aimed at transforming the electric grid by enabling the reliable use of renewable energy sources such as wind and solar. Established in 2017 and based in Somerville, Massachusetts, Form Energy is known for its innovative iron-air battery technology, which allows for the storage of electricity over extended periods, making renewable energy more dispatchable throughout the year. This technology not only helps to replace conventional fossil fuel-based generation but also enhances transmission capacity without the need for new infrastructure. By facilitating deep decarbonization of the electric system, Form Energy plays a significant role in reducing carbon emissions and promoting a sustainable energy future.

Sense Labs, Inc. is a technology company based in Cambridge, Massachusetts, specializing in home energy monitoring solutions. Established in 2013, the company develops and manufactures electronic devices that analyze electricity usage in households. Its flagship product, Sense, utilizes current sensors installed on main breakers to capture the electronic signatures of various appliances. This system employs advanced algorithms to identify and differentiate individual devices, providing users with insights into their energy consumption. Sense also offers a range of related products, including Sense Solar, add-on sensors, and various replacement components. The data collected by these devices is transmitted to users via a dedicated mobile application, enhancing the home automation experience.

Boston Metal is a metallurgy company specializing in reducing the carbon footprint of steel production. It offers industrial-scale solutions using its Molten Oxide Electrolysis (MOE) process, enabling greener and more efficient metal production.

Sense Labs, Inc. is a technology company based in Cambridge, Massachusetts, specializing in home energy monitoring solutions. Established in 2013, the company develops and manufactures electronic devices that analyze electricity usage in households. Its flagship product, Sense, utilizes current sensors installed on main breakers to capture the electronic signatures of various appliances. This system employs advanced algorithms to identify and differentiate individual devices, providing users with insights into their energy consumption. Sense also offers a range of related products, including Sense Solar, add-on sensors, and various replacement components. The data collected by these devices is transmitted to users via a dedicated mobile application, enhancing the home automation experience.

Heliotrope Technologies designs and manufactures electrochromic window coatings that can independently control light and heat transmission. Its coating technology uses a thin film of transparent nanocrystals embedded in a matrix, which, with a small electrical stimulus, adjusts a window's transmission of visible light and near-infrared radiation to reduce heat. The core technology was developed at Lawrence Berkeley National Laboratory and is associated with researchers Delia Milliron and Guillermo Garcia. Founded in 2012, Heliotrope Technologies is based in California, and its products target energy-saving smart windows that enable tint control to improve occupant comfort and reduce building energy use.

Sense Labs, Inc. is a technology company based in Cambridge, Massachusetts, specializing in home energy monitoring solutions. Established in 2013, the company develops and manufactures electronic devices that analyze electricity usage in households. Its flagship product, Sense, utilizes current sensors installed on main breakers to capture the electronic signatures of various appliances. This system employs advanced algorithms to identify and differentiate individual devices, providing users with insights into their energy consumption. Sense also offers a range of related products, including Sense Solar, add-on sensors, and various replacement components. The data collected by these devices is transmitted to users via a dedicated mobile application, enhancing the home automation experience.

Encycle Corporation specializes in wireless electrical demand management solutions for commercial and industrial facilities. Based in Toronto with offices in California and the UK, the company offers automated demand response controllers that manage peak electrical demand across various building equipment types. Their products are installed directly or via distributors in California and New York, serving clients such as retail stores, office buildings, distribution centers, and food processing plants. Encycle's strategic partnership with Ayla Networks enhances its product offerings. Founded in 2005, the company changed its name from REGEN Energy Inc. to Encycle Corporation in 2015.

Founded in 2008, Renew Financial specializes in financing solutions for contractors and homeowners to promote energy efficiency and renewable energy projects. Its key products include Property-Assessed Clean Energy (PACE) financing and the Warehouse for Energy Efficiency Loans, facilitating investments from institutional investors.

Heliotrope Technologies designs and manufactures electrochromic window coatings that can independently control light and heat transmission. Its coating technology uses a thin film of transparent nanocrystals embedded in a matrix, which, with a small electrical stimulus, adjusts a window's transmission of visible light and near-infrared radiation to reduce heat. The core technology was developed at Lawrence Berkeley National Laboratory and is associated with researchers Delia Milliron and Guillermo Garcia. Founded in 2012, Heliotrope Technologies is based in California, and its products target energy-saving smart windows that enable tint control to improve occupant comfort and reduce building energy use.

Founded in 2008, Renew Financial specializes in financing solutions for contractors and homeowners to promote energy efficiency and renewable energy projects. Its key products include Property-Assessed Clean Energy (PACE) financing and the Warehouse for Energy Efficiency Loans, facilitating investments from institutional investors.

Sense Labs, Inc. is a technology company based in Cambridge, Massachusetts, specializing in home energy monitoring solutions. Established in 2013, the company develops and manufactures electronic devices that analyze electricity usage in households. Its flagship product, Sense, utilizes current sensors installed on main breakers to capture the electronic signatures of various appliances. This system employs advanced algorithms to identify and differentiate individual devices, providing users with insights into their energy consumption. Sense also offers a range of related products, including Sense Solar, add-on sensors, and various replacement components. The data collected by these devices is transmitted to users via a dedicated mobile application, enhancing the home automation experience.

Heliotrope Technologies designs and manufactures electrochromic window coatings that can independently control light and heat transmission. Its coating technology uses a thin film of transparent nanocrystals embedded in a matrix, which, with a small electrical stimulus, adjusts a window's transmission of visible light and near-infrared radiation to reduce heat. The core technology was developed at Lawrence Berkeley National Laboratory and is associated with researchers Delia Milliron and Guillermo Garcia. Founded in 2012, Heliotrope Technologies is based in California, and its products target energy-saving smart windows that enable tint control to improve occupant comfort and reduce building energy use.