Clean Energy Ventures, established in 2017 and based in Boston, Massachusetts, is a venture capital firm focused on investing in early-stage climate technology companies. It specializes in seed and early-stage investments, primarily in North America, Europe, and Israel. The firm concentrates on advanced energy innovations that address climate change, including energy storage, grid connectivity, renewable energy production, clean transportation, and the water/energy nexus. Clean Energy Ventures not only provides capital but also leverages its network and expertise to support these startups in achieving significant scale and commercial success.
Queens Carbon is focused on developing a hydrothermal processing technology aimed at significantly reducing energy consumption in industrial applications. This innovative system minimizes the energy required for calcination and material synthesis, which is essential for carbon capture and the production of carbon-neutral cement. By enhancing energy efficiency, Queens Carbon's technology not only lowers operational costs but also contributes to a reduction in greenhouse gas emissions, supporting sustainable development and addressing the challenges posed by climate change.
DG Matrix
Seed Round in 2025
DG Matrix is a pioneering manufacturer specializing in energy storage and solar systems for electric vehicles (EVs). The company's innovative solutions focus on enabling widespread EV charging infrastructure, from single-unit L3 DC fast charging technology to microgrids and fleet charging, all while minimizing material usage and environmental footprint. This approach aims to facilitate gigaton-scale emissions reductions by making EV charging accessible and affordable.
MacroCycle Technologies
Seed Round in 2025
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.
Advanced Ionics
Venture Round in 2025
Advanced Ionics specializes in developing advanced electrolyzer technology for the production of low-cost green hydrogen. By leveraging existing industrial infrastructure and optimizing electricity consumption, the company aims to significantly reduce the costs associated with green hydrogen production. Its technology caters to a range of industrial applications, including ammonia and fertilizer production, hydrogenation, metal fabrication, glass manufacturing, methanol synthesis, synthetic fuels, chemicals, and power generation. Through its innovative solutions, Advanced Ionics supports decarbonization efforts, helping clients eliminate carbon dioxide emissions from hydrogen production.
Lithios
Seed Round in 2024
Lithios is a technology company specializing in advanced lithium extraction through innovative electrochemical methods. The firm focuses on capturing and releasing lithium from complex mixtures, which are traditionally challenging to process. By leveraging breakthroughs in applied electrochemistry, Lithios offers solutions that facilitate low-cost and selective extraction of lithium from previously untapped brine resources. This approach not only enhances the efficiency of lithium recovery but also aligns with sustainable practices, supporting the growing demand for lithium in various industries, particularly in the context of an electric future.
PeakSyncer
Seed Round in 2024
PeakSyncer, a subsidiary of Zhong Xi Group, LLC, specializes in an AI-powered cloud platform designed to optimize energy management for utility companies. The platform leverages artificial intelligence to automate and streamline demand response programs, helping utilities manage peak energy loads more effectively. Key features include real-time reporting, seamless data tracking, integration with existing infrastructure, and synchronization across ERP and CRM systems. PeakSyncer's scalable solution empowers utilities to meet regulatory requirements, create sustainable energy ecosystems, and engage customers in demand response initiatives. The company offers dedicated support and 24/7 monitoring to ensure reliable, user-friendly solutions that adapt to evolving energy grid needs.
Travertine
Venture Round in 2024
Travertine is a company focused on carbon dioxide removal and industrial chemical production, aiming to mitigate the environmental impact associated with the extraction of elements for renewable energy. The company employs a proprietary electrochemical process that transforms carbon dioxide from the atmosphere into stable carbonate minerals, effectively storing carbon permanently. In addition to carbon capture, this process generates sulfuric acid, which is utilized in critical element extraction and fertilizer production. By recycling sulfate waste to produce sulfuric acid and minimizing chemical waste, Travertine supports more sustainable practices in the mining and fertilizer industries while generating high-quality carbon credits through its direct air capture and mineralization efforts.
Aepnus
Seed Round in 2024
Developer of an electrolysis equipment designed to refine minerals and desalinate water. The company's technology manufactures low-cost electrolysis equipment which is used to electrify and decarbonize the production of commodity chemicals needed to transition to a carbon-free industry, enabling companies to manufacture electrified chemicals for a carbon-free future.
Ndustrial
Series B in 2024
Ndustrial specializes in providing analytical engines and an industrial optimization platform tailored for mid-tier manufacturers and energy companies. Their solutions focus on enhancing production control, improving energy efficiency, and minimizing waste, which enables organizations to optimize operations and reduce costs. The company employs a proprietary industrial operating system that integrates legacy data and facilitates the deployment of new Industrial IoT assets. Additionally, Ndustrial offers real-time cloud-based applications designed for factories and industrial facilities, utilizing predictive control algorithms to support efficient resource management across various sectors.
Evari
Seed Round in 2024
Evari is a clean-tech firm developing next-generation tiny, oil-free turbocompressors for heating and cooling applications to help with the global energy transition and expedite the decarbonization of various industries.
Cala Systems
Seed Round in 2024
Altus Thermal, founded in 2019 and based in Boston, Massachusetts, focuses on transforming thermal energy solutions for residential settings. The company aims to enhance efficiency, comfort, and user experience while providing benefits to the electrical grid. Altus Thermal develops energy technology designed to electrify residential heating, cooling, and hot water systems. By maximizing performance and facilitating better integration with renewable energy sources and other distributed energy resources, the company enables homeowners to electrify their living spaces in an efficient and cost-effective manner.
Advanced Ionics
Series A in 2023
Advanced Ionics specializes in developing advanced electrolyzer technology for the production of low-cost green hydrogen. By leveraging existing industrial infrastructure and optimizing electricity consumption, the company aims to significantly reduce the costs associated with green hydrogen production. Its technology caters to a range of industrial applications, including ammonia and fertilizer production, hydrogenation, metal fabrication, glass manufacturing, methanol synthesis, synthetic fuels, chemicals, and power generation. Through its innovative solutions, Advanced Ionics supports decarbonization efforts, helping clients eliminate carbon dioxide emissions from hydrogen production.
Carbon Upcycling
Series A in 2023
Carbon Upcycling is a carbon technology company focused on decarbonizing hard-to-abate industries. It utilizes patented technology to permanently store carbon dioxide in industrial byproducts and minerals, converting them into high-performance alternative materials for cement and concrete. This process not only reduces the carbon impact of industrial operations but also diverts materials from landfills, supporting the principles of a circular economy. Carbon Upcycling has garnered global recognition for its innovative approach, earning accolades such as the Carbon XPrize’s X-Factor award and being named one of the most investable cleantech ventures in Canada.
Nitrofix
Seed Round in 2023
NitroFix is focused on reducing the global carbon footprint by producing ammonia through a novel, emission-free manufacturing process. Utilizing an innovative electrochemical reaction facilitated by a new catalyst, the company achieves a production method that generates zero carbon dioxide. This sustainable ammonia production system not only offers a zero-carbon footprint solution but also promotes stable pricing and enables local ammonia production for various applications. NitroFix's green ammonia serves as a renewable energy source, a carrier for hydrogen fuel, and a foundational component for nitrogen fertilizers, contributing to a more sustainable future.
OxCCU
Series A in 2023
OxCCU specializes in renewable energy technology aimed at fostering a circular economy for fuels, chemicals, and plastics. The company’s innovative approach utilizes carbon dioxide extracted from the atmosphere, hydrogen sourced from water, and renewable electricity to produce sustainable fuels, chemicals, and biodegradable plastics. By doing so, OxCCU enables clients to adopt more environmentally friendly products, contributing to a more sustainable future.
QEA Tech
Seed Round in 2023
QEA Tech is a software company that combines AI, drone technology, and thermal imaging to provide insights into the building envelope. They process thousands of images using its proprietary software, transforming each pixel into a comprehensive 3D model of the building for quantifiable data and insights. Using 10,000+ high-resolution drone images, proprietary QEA Tech software converts each pixel into quantifiable data and a comprehensive 3D model before uploading each image to the cloud-based dashboard for 24/7 access. The QEA System identifies where and how much energy is being wasted in a building's envelope, allowing you to prioritize repairs and calculate payback and ROI. The QEA Solution calculates Negawatt (NKwh), which quantifies energy gushers (heat and cool air escaping) through the walls, windows, doors, and roof of the building.
VoltServer
Series B in 2023
VoltServer Inc. is a company that manufactures and supplies innovative electrical power distribution products, leveraging its patented Digital Electricity technology. This technology enables the delivery of touch-safe electricity through standard data cables, significantly improving the cost, speed, power, distance, efficiency, and flexibility of electrical installations compared to traditional methods. VoltServer's solutions are applicable in various sectors, including telecommunications, data centers, renewable energy, and electric vehicles. The company's products support wireless densification, intelligent buildings, and indoor agriculture. VoltServer began shipping its products in 2015 and has since been deployed in numerous large venues, such as sports stadiums, office buildings, hotels, and medical facilities. Founded in 2011, VoltServer is based in East Greenwich, Rhode Island, with an additional office in Basingstoke, United Kingdom.
Travertine
Seed Round in 2022
Travertine is a company focused on carbon dioxide removal and industrial chemical production, aiming to mitigate the environmental impact associated with the extraction of elements for renewable energy. The company employs a proprietary electrochemical process that transforms carbon dioxide from the atmosphere into stable carbonate minerals, effectively storing carbon permanently. In addition to carbon capture, this process generates sulfuric acid, which is utilized in critical element extraction and fertilizer production. By recycling sulfate waste to produce sulfuric acid and minimizing chemical waste, Travertine supports more sustainable practices in the mining and fertilizer industries while generating high-quality carbon credits through its direct air capture and mineralization efforts.
itselectric
Pre Seed Round in 2022
Itselectric specializes in providing curbside electric vehicle (EV) charging solutions tailored for urban environments. The company aims to enhance access to public charging, thereby promoting the adoption of electric vehicles, which contributes to cleaner air and healthier communities. By utilizing a behind-the-meter approach, Itselectric draws spare electrical supply from nearby buildings to offer affordable charging points. This innovative model not only addresses infrastructure challenges but also helps to alleviate environmental justice issues in cities. Additionally, it allows clients to generate passive income while facilitating convenient charging options for EV drivers.
Advanced Ionics
Seed Round in 2022
Advanced Ionics specializes in developing advanced electrolyzer technology for the production of low-cost green hydrogen. By leveraging existing industrial infrastructure and optimizing electricity consumption, the company aims to significantly reduce the costs associated with green hydrogen production. Its technology caters to a range of industrial applications, including ammonia and fertilizer production, hydrogenation, metal fabrication, glass manufacturing, methanol synthesis, synthetic fuels, chemicals, and power generation. Through its innovative solutions, Advanced Ionics supports decarbonization efforts, helping clients eliminate carbon dioxide emissions from hydrogen production.
Carbon Upcycling
Venture Round in 2022
Carbon Upcycling is a carbon technology company focused on decarbonizing hard-to-abate industries. It utilizes patented technology to permanently store carbon dioxide in industrial byproducts and minerals, converting them into high-performance alternative materials for cement and concrete. This process not only reduces the carbon impact of industrial operations but also diverts materials from landfills, supporting the principles of a circular economy. Carbon Upcycling has garnered global recognition for its innovative approach, earning accolades such as the Carbon XPrize’s X-Factor award and being named one of the most investable cleantech ventures in Canada.
Nth Cycle
Series A in 2022
Nth Cycle is a metal processing technology company that focuses on recovering critical minerals through innovative electro-extraction methods. It collaborates with battery recyclers and mining operations to extract production-grade minerals from e-waste and low-grade mine tailings, offering a cleaner and more customizable alternative to traditional hydrometallurgical and pyrometallurgical processes. By utilizing its advanced recycling technology, Nth Cycle aims to reduce reliance on primary mining, thereby creating a sustainable secondary source of rare earth metals in the United States. This approach supports the manufacturing and recycling industries while contributing to advancements in clean energy.
Bodhi
Seed Round in 2022
Bodhi's mission is to cultivate the bond between people and the energy that powers their lives. Our software platform empowers solar companies to deliver amazing customer experiences with ease. Bodhi automates communication and personalizes the homeowners’ experience, so that installers can focus on what they do best - executing projects, making more sales, and transforming communities around energy.
REsurety
Series B in 2021
REsurety, Inc. is a Boston-based company that specializes in risk management for the clean energy sector, focusing primarily on wind power projects. Founded in 2012, REsurety acts as a risk transfer intermediary, helping project owners improve profitability by transferring volumetric risks to aggregators. The company offers specialized data and analytics services to assess, quantify, and optimize the value of wind volume hedging. Its technology facilitates the risk transfer process, enabling wind project developers, owners, sponsors, and risk underwriters to manage financial uncertainties associated with renewable energy investments. By leveraging physical science, big data, and financial engineering, REsurety assists clients in comprehensively understanding and mitigating the risks related to buying and selling energy derived from renewable sources.
ClearFlame Engines
Series A in 2021
ClearFlame Engines, Inc. is a company that develops and manufactures engines specifically designed for heavy-duty applications, including markets such as marine, agriculture, transportation, power generation, rail, and construction. Founded in 2016 and headquartered in Woodridge, Illinois, ClearFlame has created a patented system that replaces traditional diesel engines, aiming to decarbonize heavy-duty engines while reducing operating costs. This innovative technology allows heavy-duty engine manufacturers to produce engines that offer higher performance and fuel cost savings, addressing the challenges posed by reliance on diesel fuel.
Leading Edge Equipment Technologies
Convertible Note in 2021
Leading Edge Equipment Technologies, Inc. is a manufacturer and supplier of equipment for solar panel production. Founded in 2008 and based in Wilmington, Massachusetts, the company specializes in developing kerfless, single-crystal silicon wafers designed to enhance the efficiency and reduce the costs of solar cells and panels. Their innovative floating silicon method eliminates the need for wire-sawing large silicon ingots, utilizing less energy-intensive furnaces and resulting in higher efficiency solar cells. This technology not only lowers manufacturing costs but also reduces emissions, making it an environmentally friendly option for solar panel manufacturers. Formerly known as Leading Edge Crystal Technologies, the company rebranded in May 2020 to reflect its focus on advanced equipment technologies in the renewable energy sector.
BlueDot Photonics
Seed Round in 2021
BlueDot Photonics, Inc. is a company based in Kirkland, Washington, that designs, develops, and produces solar panels and various photonic devices. Established in 2019, the company focuses on enhancing solar panel performance and durability through innovative semiconductor materials. By improving the power output of solar panels, BlueDot Photonics aims to make clean energy more accessible and affordable for a broader range of customers.
Boston Materials
Series A in 2021
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.
Pearl Certification
Series A in 2021
Pearl Certification, established in 2015 and headquartered in Vienna, Virginia, specializes in third-party certification of residential properties. The company assesses and documents homes' energy efficiency, comfort, indoor air quality, and safety features. By working with real estate agents, contractors, and builders, Pearl helps homeowners recoup investment costs and increases buyer confidence during property transactions. This promotes sustainable building practices, benefiting homeowners, the real estate market, and the environment.
Ndustrial
Series A in 2021
Ndustrial specializes in providing analytical engines and an industrial optimization platform tailored for mid-tier manufacturers and energy companies. Their solutions focus on enhancing production control, improving energy efficiency, and minimizing waste, which enables organizations to optimize operations and reduce costs. The company employs a proprietary industrial operating system that integrates legacy data and facilitates the deployment of new Industrial IoT assets. Additionally, Ndustrial offers real-time cloud-based applications designed for factories and industrial facilities, utilizing predictive control algorithms to support efficient resource management across various sectors.
Nth Cycle
Venture Round in 2021
Nth Cycle is a metal processing technology company that focuses on recovering critical minerals through innovative electro-extraction methods. It collaborates with battery recyclers and mining operations to extract production-grade minerals from e-waste and low-grade mine tailings, offering a cleaner and more customizable alternative to traditional hydrometallurgical and pyrometallurgical processes. By utilizing its advanced recycling technology, Nth Cycle aims to reduce reliance on primary mining, thereby creating a sustainable secondary source of rare earth metals in the United States. This approach supports the manufacturing and recycling industries while contributing to advancements in clean energy.
Volexion
Seed Round in 2021
Volexion Inc. is a manufacturer of lithium-ion batteries based in Chicago, Illinois, established in 2018. The company specializes in innovative graphene coating technology designed for commercial lithium-ion cathode materials. This advanced technology significantly enhances battery performance, offering improvements such as longer battery life, better power output, and a broader voltage range. Volexion's approach provides clients with a stable and efficient solution that optimizes the electrochemical performance of conventional lithium-ion batteries.
Cleartrace
Series A in 2020
ClearTrace Technologies, Inc., established in 2017 and based in Austin, Texas, specializes in developing a blockchain-based carbon accounting and automated energy platform. The company's core product, ClearTrace, is a cloud-based SaaS platform that creates verifiable digital records of energy usage and tracks various energy-related activities, such as third-party energy supply, power purchase agreements, and demand response programs. ClearTrace serves renewable energy suppliers, corporations, and commercial real estate clients, providing reporting, auditing, and compliance services for energy supply chains. By leveraging blockchain technology, ClearTrace aims to enhance transparency, immutability, and trust in energy and carbon data, facilitating corporate decarbonization and preventing greenwashing.
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.
Leading Edge Equipment Technologies
Series A in 2020
Leading Edge Equipment Technologies, Inc. is a manufacturer and supplier of equipment for solar panel production. Founded in 2008 and based in Wilmington, Massachusetts, the company specializes in developing kerfless, single-crystal silicon wafers designed to enhance the efficiency and reduce the costs of solar cells and panels. Their innovative floating silicon method eliminates the need for wire-sawing large silicon ingots, utilizing less energy-intensive furnaces and resulting in higher efficiency solar cells. This technology not only lowers manufacturing costs but also reduces emissions, making it an environmentally friendly option for solar panel manufacturers. Formerly known as Leading Edge Crystal Technologies, the company rebranded in May 2020 to reflect its focus on advanced equipment technologies in the renewable energy sector.
SunDensity
Seed Round in 2020
SunDensity Inc. specializes in the research, design, and development of Photonic Smart Coating technology, specifically its patent-pending PSC™. This innovative technology facilitates the up and down conversion of light wavelengths, addressing inefficiencies in photonics. The company's products aim to enhance the efficiency of solar photovoltaics, thereby reducing electricity generation costs. In addition, SunDensity's technology allows for the customization of thermal and optical properties in architectural glass and increases the quantum efficiency of optoelectronic instruments. Founded in 2016, SunDensity is headquartered in Boston, Massachusetts, with an additional office in Rochester, New York.
Boston Materials
Seed Round 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.
ClearFlame Engines
Seed Round in 2020
ClearFlame Engines, Inc. is a company that develops and manufactures engines specifically designed for heavy-duty applications, including markets such as marine, agriculture, transportation, power generation, rail, and construction. Founded in 2016 and headquartered in Woodridge, Illinois, ClearFlame has created a patented system that replaces traditional diesel engines, aiming to decarbonize heavy-duty engines while reducing operating costs. This innovative technology allows heavy-duty engine manufacturers to produce engines that offer higher performance and fuel cost savings, addressing the challenges posed by reliance on diesel fuel.
Leading Edge Equipment Technologies
Convertible Note in 2020
Leading Edge Equipment Technologies, Inc. is a manufacturer and supplier of equipment for solar panel production. Founded in 2008 and based in Wilmington, Massachusetts, the company specializes in developing kerfless, single-crystal silicon wafers designed to enhance the efficiency and reduce the costs of solar cells and panels. Their innovative floating silicon method eliminates the need for wire-sawing large silicon ingots, utilizing less energy-intensive furnaces and resulting in higher efficiency solar cells. This technology not only lowers manufacturing costs but also reduces emissions, making it an environmentally friendly option for solar panel manufacturers. Formerly known as Leading Edge Crystal Technologies, the company rebranded in May 2020 to reflect its focus on advanced equipment technologies in the renewable energy sector.
Rebound Technologies
Series A in 2020
Rebound Technologies, Inc. specializes in the manufacturing and supply of advanced thermal energy storage systems tailored for commercial refrigeration and off-grid cooling applications. Founded in 2012 and based in Commerce City, Colorado, the company offers innovative products such as IcePoint, which integrates an embedded thermal energy storage system to significantly reduce cooling costs for supermarkets, and SunChill, designed for agricultural needs in developing regions. SunChill effectively converts solar thermal energy into refrigeration, enhancing agricultural productivity by rapidly cooling harvested crops and maintaining their quality at local markets. Rebound Technologies emphasizes customized solutions that utilize renewable resources and waste heat capture, aiming to improve energy efficiency and reduce costs while supporting self-sustaining business models. The company's initiatives are currently backed by research grants from the U.S. Federal Government.
Pearl Certification
Series A in 2019
Pearl Certification, established in 2015 and headquartered in Vienna, Virginia, specializes in third-party certification of residential properties. The company assesses and documents homes' energy efficiency, comfort, indoor air quality, and safety features. By working with real estate agents, contractors, and builders, Pearl helps homeowners recoup investment costs and increases buyer confidence during property transactions. This promotes sustainable building practices, benefiting homeowners, the real estate market, and the environment.
Boston Materials
Convertible Note in 2019
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.
Rebound Technologies
Series A in 2019
Rebound Technologies, Inc. specializes in the manufacturing and supply of advanced thermal energy storage systems tailored for commercial refrigeration and off-grid cooling applications. Founded in 2012 and based in Commerce City, Colorado, the company offers innovative products such as IcePoint, which integrates an embedded thermal energy storage system to significantly reduce cooling costs for supermarkets, and SunChill, designed for agricultural needs in developing regions. SunChill effectively converts solar thermal energy into refrigeration, enhancing agricultural productivity by rapidly cooling harvested crops and maintaining their quality at local markets. Rebound Technologies emphasizes customized solutions that utilize renewable resources and waste heat capture, aiming to improve energy efficiency and reduce costs while supporting self-sustaining business models. The company's initiatives are currently backed by research grants from the U.S. Federal Government.
Pearl Certification
Series A in 2019
Pearl Certification, established in 2015 and headquartered in Vienna, Virginia, specializes in third-party certification of residential properties. The company assesses and documents homes' energy efficiency, comfort, indoor air quality, and safety features. By working with real estate agents, contractors, and builders, Pearl helps homeowners recoup investment costs and increases buyer confidence during property transactions. This promotes sustainable building practices, benefiting homeowners, the real estate market, and the environment.
Leading Edge Equipment Technologies
Seed Round in 2019
Leading Edge Equipment Technologies, Inc. is a manufacturer and supplier of equipment for solar panel production. Founded in 2008 and based in Wilmington, Massachusetts, the company specializes in developing kerfless, single-crystal silicon wafers designed to enhance the efficiency and reduce the costs of solar cells and panels. Their innovative floating silicon method eliminates the need for wire-sawing large silicon ingots, utilizing less energy-intensive furnaces and resulting in higher efficiency solar cells. This technology not only lowers manufacturing costs but also reduces emissions, making it an environmentally friendly option for solar panel manufacturers. Formerly known as Leading Edge Crystal Technologies, the company rebranded in May 2020 to reflect its focus on advanced equipment technologies in the renewable energy sector.
Boston Materials
Seed Round in 2018
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.
Leading Edge Equipment Technologies
Convertible Note in 2018
Leading Edge Equipment Technologies, Inc. is a manufacturer and supplier of equipment for solar panel production. Founded in 2008 and based in Wilmington, Massachusetts, the company specializes in developing kerfless, single-crystal silicon wafers designed to enhance the efficiency and reduce the costs of solar cells and panels. Their innovative floating silicon method eliminates the need for wire-sawing large silicon ingots, utilizing less energy-intensive furnaces and resulting in higher efficiency solar cells. This technology not only lowers manufacturing costs but also reduces emissions, making it an environmentally friendly option for solar panel manufacturers. Formerly known as Leading Edge Crystal Technologies, the company rebranded in May 2020 to reflect its focus on advanced equipment technologies in the renewable energy sector.
EnergySage
Series A in 2018
EnergySage, LLC is an online marketplace based in Boston, Massachusetts, specializing in solar and clean energy technologies for homeowners, businesses, and non-profits. Founded in 2009, the company provides a platform that offers educational resources and analytical tools, helping consumers identify and compare suitable clean energy solutions, including rooftop solar, battery storage, community solar, heat pumps, and electric vehicle charging. Through its service, EnergySage guides potential buyers in requesting and evaluating competitive quotes from pre-screened installers, facilitating a convenient and cost-effective shopping experience for clean energy products and services.
Leading Edge Equipment Technologies
Seed Round in 2017
Leading Edge Equipment Technologies, Inc. is a manufacturer and supplier of equipment for solar panel production. Founded in 2008 and based in Wilmington, Massachusetts, the company specializes in developing kerfless, single-crystal silicon wafers designed to enhance the efficiency and reduce the costs of solar cells and panels. Their innovative floating silicon method eliminates the need for wire-sawing large silicon ingots, utilizing less energy-intensive furnaces and resulting in higher efficiency solar cells. This technology not only lowers manufacturing costs but also reduces emissions, making it an environmentally friendly option for solar panel manufacturers. Formerly known as Leading Edge Crystal Technologies, the company rebranded in May 2020 to reflect its focus on advanced equipment technologies in the renewable energy sector.
Autonomous Marine Systems
Seed Round in 2016
Autonomous Marine Systems Inc. is a marine data services company based in Somerville, Massachusetts, founded in 2009. The company specializes in providing customized hydrographic surveys and operates low-cost, self-powered ocean surface drones that form an intelligent sensor network for data collection. Its robotic sailboats, which harness wind and solar energy, are designed for autonomous operation on long-duration missions across vast geographic areas. This technology allows clients in sectors such as defense, energy, shipping, fishing, and research to efficiently gather marine data while minimizing risks to human life and reducing the operational costs associated with traditional vessels in challenging marine environments.
VoltServer
Series A in 2015
VoltServer Inc. is a company that manufactures and supplies innovative electrical power distribution products, leveraging its patented Digital Electricity technology. This technology enables the delivery of touch-safe electricity through standard data cables, significantly improving the cost, speed, power, distance, efficiency, and flexibility of electrical installations compared to traditional methods. VoltServer's solutions are applicable in various sectors, including telecommunications, data centers, renewable energy, and electric vehicles. The company's products support wireless densification, intelligent buildings, and indoor agriculture. VoltServer began shipping its products in 2015 and has since been deployed in numerous large venues, such as sports stadiums, office buildings, hotels, and medical facilities. Founded in 2011, VoltServer is based in East Greenwich, Rhode Island, with an additional office in Basingstoke, United Kingdom.
PRIME Coalition
Venture Round in 2015
PRIME Coalition is a not-for-profit venture capital firm established in 2014 and based in Cambridge, Massachusetts. As a 501(c)(3) public charity, it focuses on making minority early-stage investments in companies, particularly in the cleantech, business services, and energy services sectors within the United States. The organization aims to support innovative ventures that are positioned to address pressing environmental challenges and promote sustainable practices. Through its investments, PRIME Coalition seeks to foster the development of technologies and services that can contribute to a more sustainable future.
Solantro Semiconductor
Venture Round in 2015
Solantro Semiconductor Corp. is a semiconductor company based in Ottawa, Canada, specializing in the design and manufacture of integrated circuits for grid applications, particularly in the renewable energy sector. Founded in 2009, the company develops advanced power management chipsets, including analog power managers, maximizer DC controllers, and micro-inverter controllers. These chipsets enhance the functionality of solar panels, transforming them into integrated power generators. Solantro's products support applications such as DC-AC micro-inverters, DC-DC power optimizers, and intelligent photovoltaic (PV) module safety disconnects. In addition to hardware, the company offers software development tools to facilitate the integration of its semiconductor solutions into power electronics and smart grid systems. Solantro serves various clients in the renewable energy and power electronics industries, leveraging its expertise in system architecture and power conversion to promote scalable and efficient energy solutions.
Bevi
Seed Round in 2015
Bevi is a manufacturer of smart water dispensers designed for offices and commercial spaces. Their innovative product offers customizable flavors created from filtered tap water and natural ingredients, allowing users to make personalized drinks. Bevi's dispensers provide nutritional information and enable users to track their environmental impact, promoting eco-friendly hydration. By eliminating the need for bottled beverages, Bevi aims to reduce waste associated with production, shipping, and disposal. The company envisions a future in which their platform transforms beverage delivery by utilizing the municipal water supply.
Skystream Markets
Series A in 2014
Skystream Markets Inc. operates as an institutional transaction platform for the environmental markets in the United States and internationally. Its platform offers automation in the trade cycle, including execution, trade capture, processing, and reporting. The company also acts as a neutral intermediary for market participants in the environmental markets; provides client support, which includes structuring customized physical and financial hedging strategies in the spot, option, and forward markets; and builds auctions and electronic markets for the primary and secondary markets in renewable energy certificate (REC) markets. In addition, Skystream Markets offers transaction services in REC markets. Further, the company operates a trading platform that connects pools of capital with renewable power projects through an electronic process. It serves power producers and major trading counterparties. Skystream Markets was founded in 2009 and is based in New York, New York with a sales office in Boston, Massachusetts.
REsurety
Seed Round in 2014
REsurety, Inc. is a Boston-based company that specializes in risk management for the clean energy sector, focusing primarily on wind power projects. Founded in 2012, REsurety acts as a risk transfer intermediary, helping project owners improve profitability by transferring volumetric risks to aggregators. The company offers specialized data and analytics services to assess, quantify, and optimize the value of wind volume hedging. Its technology facilitates the risk transfer process, enabling wind project developers, owners, sponsors, and risk underwriters to manage financial uncertainties associated with renewable energy investments. By leveraging physical science, big data, and financial engineering, REsurety assists clients in comprehensively understanding and mitigating the risks related to buying and selling energy derived from renewable sources.
REsurety
Seed Round in 2014
REsurety, Inc. is a Boston-based company that specializes in risk management for the clean energy sector, focusing primarily on wind power projects. Founded in 2012, REsurety acts as a risk transfer intermediary, helping project owners improve profitability by transferring volumetric risks to aggregators. The company offers specialized data and analytics services to assess, quantify, and optimize the value of wind volume hedging. Its technology facilitates the risk transfer process, enabling wind project developers, owners, sponsors, and risk underwriters to manage financial uncertainties associated with renewable energy investments. By leveraging physical science, big data, and financial engineering, REsurety assists clients in comprehensively understanding and mitigating the risks related to buying and selling energy derived from renewable sources.
VoltServer
Series A in 2013
VoltServer Inc. is a company that manufactures and supplies innovative electrical power distribution products, leveraging its patented Digital Electricity technology. This technology enables the delivery of touch-safe electricity through standard data cables, significantly improving the cost, speed, power, distance, efficiency, and flexibility of electrical installations compared to traditional methods. VoltServer's solutions are applicable in various sectors, including telecommunications, data centers, renewable energy, and electric vehicles. The company's products support wireless densification, intelligent buildings, and indoor agriculture. VoltServer began shipping its products in 2015 and has since been deployed in numerous large venues, such as sports stadiums, office buildings, hotels, and medical facilities. Founded in 2011, VoltServer is based in East Greenwich, Rhode Island, with an additional office in Basingstoke, United Kingdom.
Skystream Markets
Series A in 2012
Skystream Markets Inc. operates as an institutional transaction platform for the environmental markets in the United States and internationally. Its platform offers automation in the trade cycle, including execution, trade capture, processing, and reporting. The company also acts as a neutral intermediary for market participants in the environmental markets; provides client support, which includes structuring customized physical and financial hedging strategies in the spot, option, and forward markets; and builds auctions and electronic markets for the primary and secondary markets in renewable energy certificate (REC) markets. In addition, Skystream Markets offers transaction services in REC markets. Further, the company operates a trading platform that connects pools of capital with renewable power projects through an electronic process. It serves power producers and major trading counterparties. Skystream Markets was founded in 2009 and is based in New York, New York with a sales office in Boston, Massachusetts.
7AC Technologies
Debt Financing in 2011
7AC Technologies Inc. is a company based in Beverly, Massachusetts, specializing in the development of innovative HVAC solutions that utilize membrane-isolated plastic plate technology and liquid desiccants. This approach allows for the design of ultra-efficient HVAC systems tailored for commercial and industrial buildings, achieving over a 50% reduction in energy costs compared to traditional HVAC units. Originally founded in 2009 as 7Solar Technologies, Inc., the company rebranded to 7AC Technologies Inc. in September 2011. As of late 2020, it operates as a subsidiary of Emerson Electric Co.
MyEnergy
Series A in 2011
MyEnergy operates as a personalized platform that assists households in the United States in reducing energy consumption and lowering utility bills. By accessing the free site, users can benefit from energy-saving tips, incentives, and the ability to compare their energy usage with others. The platform also enables users to set personal goals and monitor their progress, while offering rewards for successful reductions in energy bills. MyEnergy's technology incorporates advanced algorithms that analyze utility energy data, enhancing its ability to provide tailored recommendations. The service is compatible with numerous utilities nationwide and is expanding to reach over 90% of the U.S. population, making it a valuable resource for energy savings.
Exterra Carbon Solutions
Exterra Carbon Solutions is a negative emissions technology company focused on developing effective methods for durable carbon dioxide storage through the use of mineral waste. The company has created a platform that accelerates the natural weathering of rocks, transforming mineral waste into substantial carbon sinks capable of permanently storing CO2. Exterra offers comprehensive solutions for industrial emitters and direct capture companies, facilitating verifiable storage of captured carbon through mineral carbonation. Additionally, the company enables the generation of trusted carbon credits in collaboration with standard bodies, while implementing robust accounting frameworks for various CO2 mineralization technologies worldwide.
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