Advanced Ionics
Venture Round in 2025
Advanced Ionics specializes in developing innovative electrolyzer technology for generating green hydrogen. The company's primary goal is to lower the costs associated with green hydrogen production by leveraging existing industrial infrastructure and minimizing electricity consumption. This approach supports global decarbonization efforts by offering tailored solutions for various industries.
PeelON develops biodegradable packaging designed to extend the shelf life of fresh produce by creating a proprietary microclimate around items. Its natural-material blend preserves freshness and quality longer, reducing food waste and the need for frequent transport and storage. The packaging is fully biodegradable and compostable, offering an eco-friendly alternative that lowers the carbon footprint of the fresh produce supply chain. By enabling sustainable, efficient packaging, PeelON addresses plastic pollution and contributes to more responsible handling of perishable goods.
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 innovative electrolyzer technology for generating green hydrogen. The company's primary goal is to lower the costs associated with green hydrogen production by leveraging existing industrial infrastructure and minimizing electricity consumption. This approach supports global decarbonization efforts by offering tailored solutions for various industries.
Carbon Upcycling
Series A in 2023
Carbon Upcycling is a carbon technology company focused on decarbonizing hard-to-abate industries through its patented technology. This innovation allows for the permanent storage of carbon dioxide in industrial byproducts and minerals, effectively transforming them into high-performance alternative materials for cement and concrete. By doing so, Carbon Upcycling aims to significantly reduce the carbon footprint of industrial processes while diverting materials from landfills, thereby supporting a circular economy. The company has garnered international recognition for its advancements, being awarded the Carbon XPrize’s X-Factor, named NRMCA’s 2023 Innovative Company, and included in Cleantech Group’s Global Cleantech 100 and Foresight 50’s Canada’s Most Investable Cleantech Ventures.
NitroFix
Seed Round in 2023
NitroFix develops emission-free ammonia generation technology. Its innovative electrochemical process, aided by a novel catalyst, produces ammonia with zero carbon emissions.
OxCCU develops renewable energy technology to enable a circular economy for fuels, chemicals, and plastics. The technology combines carbon dioxide from the atmosphere with hydrogen from water and renewable electricity to produce fuels, chemicals, and biodegradable plastics and is positioned to deliver the lowest-cost Power to Liquids pathway.
GreenPortfolio
Angel Round in 2022
GreenPortfolio facilitates sustainable investing by offering climate impact ratings for investments and AI-driven matching with financial advisors.
Itselectric
Pre Seed Round in 2022
Itselectric provides curbside electric vehicle charging solutions tailored for urban environments, connecting charging posts behind the meter to adjacent buildings. The system expands public charging access, helping overcome infrastructure and environmental justice barriers, encouraging EV adoption, and improving air quality and community health. Property owners can earn passive income by hosting the charging posts.
Advanced Ionics
Seed Round in 2022
Advanced Ionics specializes in developing innovative electrolyzer technology for generating green hydrogen. The company's primary goal is to lower the costs associated with green hydrogen production by leveraging existing industrial infrastructure and minimizing electricity consumption. This approach supports global decarbonization efforts by offering tailored solutions for various industries.
Carbon Upcycling
Venture Round in 2022
Carbon Upcycling is a carbon technology company focused on decarbonizing hard-to-abate industries through its patented technology. This innovation allows for the permanent storage of carbon dioxide in industrial byproducts and minerals, effectively transforming them into high-performance alternative materials for cement and concrete. By doing so, Carbon Upcycling aims to significantly reduce the carbon footprint of industrial processes while diverting materials from landfills, thereby supporting a circular economy. The company has garnered international recognition for its advancements, being awarded the Carbon XPrize’s X-Factor, named NRMCA’s 2023 Innovative Company, and included in Cleantech Group’s Global Cleantech 100 and Foresight 50’s Canada’s Most Investable Cleantech Ventures.
Nth Cycle
Series A in 2022
Nth Cycle is a company specializing in metal processing technology. It collaborates with battery recyclers and miners to recover critical minerals from electronic waste and low-grade mine tailings using its proprietary electro-extraction method, offering an alternative to traditional hydrometallurgy and pyrometallurgy processes.
Energetic Capital
Series A in 2021
Energetic Insurance, Inc. is an InsurTech company based in Boston, Massachusetts, founded in 2016. It specializes in providing solar insurance solutions that address credit and counterparty risks associated with commercial and industrial solar photovoltaic projects. The company offers a product called EneRate, which protects third-party solar developers and asset owners from repayment risks and revenue losses due to defaults on power purchase agreements (PPAs). Energetic Insurance employs a data-driven approach as a Managing General Underwriter, developing innovative risk management products that facilitate solar financing for unrated or below investment grade organizations. This enables solar project developers to undertake more projects and access capital by mitigating payment default risks, thereby enhancing project economics through lower interest rates and improved financial structuring.
Leading Edge Equipment Technologies
Convertible Note in 2021
Founded in 2008, this company specializes in manufacturing equipment for solar panel production. Its core technology, the floating silicon method, enhances wafer efficiency, reduces manufacturing costs and emissions.
Boston Materials
Series A in 2021
Boston Materials designs and manufactures advanced composite materials, including carbon fiber pre-pregs enabled by its patented Z-axis Fiber technology, which uses vertically aligned carbon fibers to improve energy transfer. The company produces magnetically assembled carbon fiber pre-pregs and other specialty materials for semiconductors, aerospace platforms, and thermal management, delivering lightweight, high-performance solutions for electronics, aviation, electrified vehicles, and related industries. Its processes include roll-to-roll manufacturing with in-line quality control to support scalable production and consistent quality across applications.
Nth Cycle
Venture Round in 2021
Nth Cycle is a company specializing in metal processing technology. It collaborates with battery recyclers and miners to recover critical minerals from electronic waste and low-grade mine tailings using its proprietary electro-extraction method, offering an alternative to traditional hydrometallurgy and pyrometallurgy processes.
Boston Materials
Convertible Note in 2020
Boston Materials designs and manufactures advanced composite materials, including carbon fiber pre-pregs enabled by its patented Z-axis Fiber technology, which uses vertically aligned carbon fibers to improve energy transfer. The company produces magnetically assembled carbon fiber pre-pregs and other specialty materials for semiconductors, aerospace platforms, and thermal management, delivering lightweight, high-performance solutions for electronics, aviation, electrified vehicles, and related industries. Its processes include roll-to-roll manufacturing with in-line quality control to support scalable production and consistent quality across applications.
Leading Edge Equipment Technologies
Series A in 2020
Founded in 2008, this company specializes in manufacturing equipment for solar panel production. Its core technology, the floating silicon method, enhances wafer efficiency, reduces manufacturing costs and emissions.
SunDensity
Seed Round in 2020
SunDensity Inc. is a Boston-based company that specializes in the research, design, and development of innovative Photonic Smart Coating (PSC™) technology. Established in 2016, the company focuses on enhancing efficiencies in photonics through the up and down conversion of light wavelengths, addressing various inefficiencies in the field. SunDensity's PSC™ technology is designed to lower electricity costs generated by solar photovoltaic applications, optimize the thermal and optical properties of architectural glass, and improve the quantum efficiency of optoelectronic instruments. The company also maintains an office in Rochester, New York, where it continues to advance its groundbreaking technologies.
Boston Materials
Seed Round in 2020
Boston Materials designs and manufactures advanced composite materials, including carbon fiber pre-pregs enabled by its patented Z-axis Fiber technology, which uses vertically aligned carbon fibers to improve energy transfer. The company produces magnetically assembled carbon fiber pre-pregs and other specialty materials for semiconductors, aerospace platforms, and thermal management, delivering lightweight, high-performance solutions for electronics, aviation, electrified vehicles, and related industries. Its processes include roll-to-roll manufacturing with in-line quality control to support scalable production and consistent quality across applications.
Leading Edge Equipment Technologies
Convertible Note in 2020
Founded in 2008, this company specializes in manufacturing equipment for solar panel production. Its core technology, the floating silicon method, enhances wafer efficiency, reduces manufacturing costs and emissions.
Boston Materials
Convertible Note in 2019
Boston Materials designs and manufactures advanced composite materials, including carbon fiber pre-pregs enabled by its patented Z-axis Fiber technology, which uses vertically aligned carbon fibers to improve energy transfer. The company produces magnetically assembled carbon fiber pre-pregs and other specialty materials for semiconductors, aerospace platforms, and thermal management, delivering lightweight, high-performance solutions for electronics, aviation, electrified vehicles, and related industries. Its processes include roll-to-roll manufacturing with in-line quality control to support scalable production and consistent quality across applications.
Leading Edge Equipment Technologies
Seed Round in 2019
Founded in 2008, this company specializes in manufacturing equipment for solar panel production. Its core technology, the floating silicon method, enhances wafer efficiency, reduces manufacturing costs and emissions.
Energetic Capital
Seed Round in 2019
Energetic Insurance, Inc. is an InsurTech company based in Boston, Massachusetts, founded in 2016. It specializes in providing solar insurance solutions that address credit and counterparty risks associated with commercial and industrial solar photovoltaic projects. The company offers a product called EneRate, which protects third-party solar developers and asset owners from repayment risks and revenue losses due to defaults on power purchase agreements (PPAs). Energetic Insurance employs a data-driven approach as a Managing General Underwriter, developing innovative risk management products that facilitate solar financing for unrated or below investment grade organizations. This enables solar project developers to undertake more projects and access capital by mitigating payment default risks, thereby enhancing project economics through lower interest rates and improved financial structuring.
CleanFiber
Venture Round in 2018
CleanFiber, LLC is a manufacturer of cellulose insulation materials designed for use in attics, walls, and floors of both residential and commercial buildings. Founded in 2013 and headquartered in Blasdell, New York, with an additional office in Buffalo, the company specializes in producing high-performance, carbon-negative insulation from recycled corrugated cardboard. This innovative approach not only promotes sustainability but also enables construction companies to build fire-resistant structures while maintaining cost competitiveness. CleanFiber has transitioned from its former name, UltraCell Insulation, LLC, in September 2018, and is currently focused on rapidly scaling up production to meet growing demand in the insulation market.
Boston Materials
Seed Round in 2018
Boston Materials designs and manufactures advanced composite materials, including carbon fiber pre-pregs enabled by its patented Z-axis Fiber technology, which uses vertically aligned carbon fibers to improve energy transfer. The company produces magnetically assembled carbon fiber pre-pregs and other specialty materials for semiconductors, aerospace platforms, and thermal management, delivering lightweight, high-performance solutions for electronics, aviation, electrified vehicles, and related industries. Its processes include roll-to-roll manufacturing with in-line quality control to support scalable production and consistent quality across applications.
Leading Edge Equipment Technologies
Convertible Note in 2018
Founded in 2008, this company specializes in manufacturing equipment for solar panel production. Its core technology, the floating silicon method, enhances wafer efficiency, reduces manufacturing costs and emissions.
CleanFiber
Venture Round in 2018
CleanFiber, LLC is a manufacturer of cellulose insulation materials designed for use in attics, walls, and floors of both residential and commercial buildings. Founded in 2013 and headquartered in Blasdell, New York, with an additional office in Buffalo, the company specializes in producing high-performance, carbon-negative insulation from recycled corrugated cardboard. This innovative approach not only promotes sustainability but also enables construction companies to build fire-resistant structures while maintaining cost competitiveness. CleanFiber has transitioned from its former name, UltraCell Insulation, LLC, in September 2018, and is currently focused on rapidly scaling up production to meet growing demand in the insulation market.
Energetic Capital
Convertible Note in 2017
Energetic Insurance, Inc. is an InsurTech company based in Boston, Massachusetts, founded in 2016. It specializes in providing solar insurance solutions that address credit and counterparty risks associated with commercial and industrial solar photovoltaic projects. The company offers a product called EneRate, which protects third-party solar developers and asset owners from repayment risks and revenue losses due to defaults on power purchase agreements (PPAs). Energetic Insurance employs a data-driven approach as a Managing General Underwriter, developing innovative risk management products that facilitate solar financing for unrated or below investment grade organizations. This enables solar project developers to undertake more projects and access capital by mitigating payment default risks, thereby enhancing project economics through lower interest rates and improved financial structuring.
Leading Edge Equipment Technologies
Seed Round in 2017
Founded in 2008, this company specializes in manufacturing equipment for solar panel production. Its core technology, the floating silicon method, enhances wafer efficiency, reduces manufacturing costs and emissions.
WeSpire Inc. is an engagement platform headquartered in Boston, Massachusetts, that specializes in sustainability and responsibility programs for global corporations. Founded in 2010 and previously known as Practically Green, the company employs persuasive technology to foster employee engagement in a variety of initiatives, including energy efficiency, water conservation, waste management, transportation, food sustainability, volunteerism, and corporate citizenship. WeSpire's platform utilizes dynamic content, social levers, and gamification, supported by applied behavioral science, to enhance participation in these programs. By providing a configurable library of action-based programs, WeSpire enables organizations to drive measurable positive impacts and improve environmental, social, and cultural outcomes. The company collaborates with prominent brands such as Unilever, MGM Resorts International, and Sony to promote engagement in corporate sustainability and social responsibility efforts.
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.
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, that specializes in innovative HVAC solutions using a unique membrane-isolated plastic plate technology. Founded in 2009 and formerly known as 7Solar Technologies, the company focuses on developing ultra-efficient liquid desiccant systems designed for commercial and industrial buildings. These systems offer significant energy savings, achieving over a 50% reduction in energy costs compared to traditional HVAC units. As of November 2020, 7AC Technologies operates as a subsidiary of Emerson Electric Co.
OutSmart Power Systems
Seed Round in 2009
OutSmart Power Systems, LLC is a Massachusetts-based company that specializes in lean energy management software and services designed for commercial and industrial (C&I) buildings, particularly grocery stores, convenience stores, and cold storage facilities. Established in 2008, the company offers innovative solutions such as EnergyMate, a miniature metering technology that monitors energy and power parameters, and the OutSmart Analytics Platform (OSAP), which stores and analyzes data to uncover energy-saving opportunities. OutSmart's approach focuses on providing detailed insights into energy consumption and equipment health, particularly for critical systems like refrigeration, HVAC, and lighting. The company enhances energy management by categorizing and prioritizing activities related to energy use while offering basic and advanced analytics, reporting programs, and total energy savings services. By leveraging specialized sensor technology and data extraction techniques, OutSmart delivers granular monitoring capabilities that improve operational efficiency and reduce energy costs, often achieving payback periods of less than a year for its clients.
Exterra is a technology company focused on developing solutions for durable CO2 storage using mineral waste. Its proprietary technologies enable the production of low-carbon oxides and critical minerals from ores and mine tailings, integrating into mineral processing operations to reduce costs and facilitate decarbonization.