Clean Energy Ventures

Electrified Thermal Solutions, founded in 2021 and based in Medford, Massachusetts, develops innovative energy storage technology. The company converts intermittent renewable electricity into constant heat using low-cost conductive ceramic blocks, enabling industrial sectors to replace fossil fuels with zero-carbon heat.

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.

Kuva Systems develops an industrial IoT solution that continuously monitors and quantifies methane and VOC emissions with an infrared imaging system. The technology automatically detects leaks, measures emission levels, and provides operators with annotated video clips, while visualizing events in day or day-night modes and transmitting quantified visuals to the cloud in real time, enabling oil and gas operators to monitor assets more cost-effectively. Founded in 2015 and headquartered in Cambridge, Massachusetts, Kuva Systems focuses on enabling safer, more efficient emissions surveillance for industrial facilities.

LineVision, Inc. is a company that specializes in developing advanced transmission line monitoring systems for electric utilities. Founded in 2018 and headquartered in Somerville, Massachusetts, LineVision offers a patented non-contact sensor technology that enables real-time monitoring and analytics of overhead power lines. This system provides crucial insights into the health and performance of transmission lines, allowing utilities to enhance capacity, reliability, and safety without the need for scheduled outages or specialized installation equipment. Key features of LineVision's platform include asset management, dynamic line ratings, and a secure web interface for data and analytics. By leveraging these capabilities, LineVision supports utility partners in their efforts to improve grid resilience and facilitate the energy transition.

Electrified Thermal Solutions, founded in 2021 and based in Medford, Massachusetts, develops innovative energy storage technology. The company converts intermittent renewable electricity into constant heat using low-cost conductive ceramic blocks, enabling industrial sectors to replace fossil fuels with zero-carbon heat.

REsurety, Inc. is a risk transfer intermediary focused on enhancing the profitability of wind power projects through innovative risk management solutions. Founded in 2012 and based in Boston, Massachusetts, the company specializes in providing data, analytics, and related services that help clients evaluate, quantify, and optimize the value of wind volume hedging. By streamlining the process of risk transfer, REsurety supports wind project developers, owners, and financial underwriters in effectively managing the inherent risks associated with renewable energy investments. The company's technology integrates physical science, big data, and financial engineering, enabling clients to make informed decisions that maximize the resilience and sustainability of clean energy projects.

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.

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 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.

LineVision, Inc. is a company that specializes in developing advanced transmission line monitoring systems for electric utilities. Founded in 2018 and headquartered in Somerville, Massachusetts, LineVision offers a patented non-contact sensor technology that enables real-time monitoring and analytics of overhead power lines. This system provides crucial insights into the health and performance of transmission lines, allowing utilities to enhance capacity, reliability, and safety without the need for scheduled outages or specialized installation equipment. Key features of LineVision's platform include asset management, dynamic line ratings, and a secure web interface for data and analytics. By leveraging these capabilities, LineVision supports utility partners in their efforts to improve grid resilience and facilitate the energy transition.

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.

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 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.

Kuva Systems develops an industrial IoT solution that continuously monitors and quantifies methane and VOC emissions with an infrared imaging system. The technology automatically detects leaks, measures emission levels, and provides operators with annotated video clips, while visualizing events in day or day-night modes and transmitting quantified visuals to the cloud in real time, enabling oil and gas operators to monitor assets more cost-effectively. Founded in 2015 and headquartered in Cambridge, Massachusetts, Kuva Systems focuses on enabling safer, more efficient emissions surveillance for industrial facilities.

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.

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.

LineVision, Inc. is a company that specializes in developing advanced transmission line monitoring systems for electric utilities. Founded in 2018 and headquartered in Somerville, Massachusetts, LineVision offers a patented non-contact sensor technology that enables real-time monitoring and analytics of overhead power lines. This system provides crucial insights into the health and performance of transmission lines, allowing utilities to enhance capacity, reliability, and safety without the need for scheduled outages or specialized installation equipment. Key features of LineVision's platform include asset management, dynamic line ratings, and a secure web interface for data and analytics. By leveraging these capabilities, LineVision supports utility partners in their efforts to improve grid resilience and facilitate the energy transition.

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.

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 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.

LineVision, Inc. is a company that specializes in developing advanced transmission line monitoring systems for electric utilities. Founded in 2018 and headquartered in Somerville, Massachusetts, LineVision offers a patented non-contact sensor technology that enables real-time monitoring and analytics of overhead power lines. This system provides crucial insights into the health and performance of transmission lines, allowing utilities to enhance capacity, reliability, and safety without the need for scheduled outages or specialized installation equipment. Key features of LineVision's platform include asset management, dynamic line ratings, and a secure web interface for data and analytics. By leveraging these capabilities, LineVision supports utility partners in their efforts to improve grid resilience and facilitate the energy transition.

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.

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.

EnergySage, LLC is an online marketplace based in Boston, Massachusetts, that specializes in solar and clean energy technologies for homeowners, businesses, and non-profits. Founded in 2009, the company provides a platform that enables consumers to explore a variety of energy solutions, including rooftop solar, battery storage, community solar, heat pumps, electric vehicle charging, and more. EnergySage offers educational content, analytical tools, and standardized shopping experiences, allowing users to request and compare competitive quotes from pre-screened installers. This facilitates informed decision-making and streamlines the process of selecting and installing clean energy systems, making it a valuable resource for those seeking sustainable energy alternatives.

Zagster Inc. is a provider of bike-sharing programs, specializing in the design, construction, and operation of both private and public-private bike-sharing systems in North America. Founded in 2007 and headquartered in Cambridge, Massachusetts, the company partners with property managers, universities, corporate campuses, hotels, and small cities to offer bike-sharing solutions tailored to the needs of tenants, employees, guests, and residents. Zagster's comprehensive offerings include a mobile application that facilitates the unlocking, riding, and returning of bikes, as well as a micro-mobility operations platform for e-mobility providers. Additionally, the company provides maintenance and rider support services, ensuring a seamless experience for users.

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.

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.

CIMCON Lighting, established in 2012, specializes in developing web-based wireless outdoor lighting management systems. Headquartered in Burlington, Massachusetts, the company serves utilities, municipalities, ESCOs, and commercial customers by providing solutions for traditional, LED, and solar-based street lights. Their offerings include the LightingGale software for automated streetlight management, wireless controllers like iSLC-3100 with dimming capabilities, and the NearSky platform for smart city applications. CIMCON's systems enable clients to remotely monitor and control outdoor lighting fixtures, reducing energy consumption and maintenance costs while transforming existing infrastructure into a foundation for smart city solutions.

Autonomous Marine Systems Inc. is a marine data services company based in Somerville, Massachusetts, established in 2009. The company specializes in collecting and transmitting hydrographic data utilizing low-cost, self-powered ocean surface drones that operate autonomously. These wind and solar-powered robotic sailboats are deployed in fleets to form an intelligent sensor network, enabling customized surveys for various sectors including defense, energy, shipping, fishing, and research. By providing long-duration mission capabilities over extensive geographic areas, Autonomous Marine Systems allows clients to gather crucial marine data while minimizing risks to human life and reducing the costs associated with traditional vessels in challenging marine environments.

Established in 2014, PRIME Coalition is a not-for-profit organization based in Cambridge, Massachusetts. It focuses on minority early-stage investments, primarily in cleantech, business services, and energy services sectors within the United States.

Zagster Inc. is a provider of bike-sharing programs, specializing in the design, construction, and operation of both private and public-private bike-sharing systems in North America. Founded in 2007 and headquartered in Cambridge, Massachusetts, the company partners with property managers, universities, corporate campuses, hotels, and small cities to offer bike-sharing solutions tailored to the needs of tenants, employees, guests, and residents. Zagster's comprehensive offerings include a mobile application that facilitates the unlocking, riding, and returning of bikes, as well as a micro-mobility operations platform for e-mobility providers. Additionally, the company provides maintenance and rider support services, ensuring a seamless experience for users.

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 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, Inc. is a risk transfer intermediary focused on enhancing the profitability of wind power projects through innovative risk management solutions. Founded in 2012 and based in Boston, Massachusetts, the company specializes in providing data, analytics, and related services that help clients evaluate, quantify, and optimize the value of wind volume hedging. By streamlining the process of risk transfer, REsurety supports wind project developers, owners, and financial underwriters in effectively managing the inherent risks associated with renewable energy investments. The company's technology integrates physical science, big data, and financial engineering, enabling clients to make informed decisions that maximize the resilience and sustainability of clean energy projects.

REsurety, Inc. is a risk transfer intermediary focused on enhancing the profitability of wind power projects through innovative risk management solutions. Founded in 2012 and based in Boston, Massachusetts, the company specializes in providing data, analytics, and related services that help clients evaluate, quantify, and optimize the value of wind volume hedging. By streamlining the process of risk transfer, REsurety supports wind project developers, owners, and financial underwriters in effectively managing the inherent risks associated with renewable energy investments. The company's technology integrates physical science, big data, and financial engineering, enabling clients to make informed decisions that maximize the resilience and sustainability of clean energy projects.

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 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.

VCharge, Inc. is a technology company that specializes in intelligent infrastructure for managing transactive electric loads, primarily across Maine, Massachusetts, Pennsylvania, and expanding into international markets such as Germany, Ireland, and the United Kingdom. Founded in 2009 and headquartered in Providence, Rhode Island, VCharge develops the VNet power management platform, which coordinates the activities of distributed transactive load assets. The company also provides SmartBricks and SmartHydro, controllers for electric thermal storage heating systems, and VConsole, a web-based interface for users and utilities. VCharge focuses on retrofitting existing electric thermal storage systems, which are more common in Europe, to enhance energy efficiency and reduce costs for homeowners. Through energy arbitrage and grid services, VCharge helps users save significantly on heating costs while contributing to the stability and efficiency of the electric grid, particularly as the energy landscape shifts towards greater reliance on renewable sources.

Next Step Living provides home energy evaluations and solutions for individuals and organizations. It offers energy assessment and diagnostics, air sealing and insulation, and multi-family retrofit services. The company also provides customized solutions, such as HVAC repair and replacement, window replacement and installation, solar or geothermal systems installation, building automation, interior and exterior lighting design, and custom retrofit services. Its sustainability solutions include water efficiency and purification, landscape design and management, and indoor air quality services. The company provides assessment and diagnostic processes to heating and cooling, domestic hot water, and electricity and lighting needs. Next Step Living partners with more than 400 municipalities, civic organizations, contractors, and corporations to deliver energy-efficient and environmental-friendly solutions to its customers. Those solutions include home energy assessments, weatherization work, energy-efficient windows, efficient heating, and cooling solutions, and access to solar solutions. Next Step Living was founded in 2008 by Geoff Chapin and is based in Boston, Massachusetts.

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.

PurposeEnergy, Inc. specializes in providing consultative services and wastewater management solutions primarily for the food and beverage industry. Established in 2007 and headquartered in Woburn, Massachusetts, the company conducts comprehensive audits of clients' wastewater strategies and offers tailored recommendations for organic waste remediation and technology enhancements. PurposeEnergy develops advanced wastewater systems that convert organic residuals into renewable energy and clean water. This innovative approach helps clients improve production efficiency, reduce costs associated with trucking and off-site waste disposal, lower energy and water expenses, and minimize their carbon footprint.

Powerhouse Dynamics, Inc. is a technology company specializing in enterprise energy and asset management systems tailored for small commercial facilities. Founded in 2008 and based in Newton, Massachusetts, the company offers the SiteSage platform, which centralizes the control, analysis, and management of energy-consuming equipment. This cloud-based system is designed to enhance operational efficiency through powerful analytics, providing users with insights via straightforward online and mobile interfaces. SiteSage continuously improves energy efficiency by monitoring power consumption, gas, and water usage, and it enables remote management of equipment such as HVAC systems. Additionally, the platform supports food safety and utility bill management, catering to a diverse client base that includes restaurants, convenience stores, and retail establishments. Powerhouse Dynamics operates as a subsidiary of The Middleby Corporation as of April 2019.