Clean Energy Ventures

Clean Energy Ventures is a venture capital firm based in Boston, Massachusetts, established in 2017. The firm specializes in seed and early-stage investments in climate technology startups, primarily in North America, Europe, and Israel. Its focus is on advanced energy innovations that address climate change, targeting sectors such as energy storage, grid connectivity, renewable energy production, clean transportation, and the water/energy nexus. Clean Energy Ventures aims to commercialize disruptive clean energy technologies and business model innovations that are ready for scaling, leveraging market-driven forces to significantly reduce global greenhouse gas emissions. The firm is composed of experienced professionals with extensive backgrounds in the energy and environmental sectors, providing not only capital but also management expertise and a robust network to support the growth of its portfolio companies.

John Bobrowich

Venture Partner

Yi-Jean Chow

Investment Principal

James Ellis

Venture Partner

Temple Fennell

Co-Founder and Managing Director

Virginia Foote

Venture Partner

Dan Goldman

Co-Founder and Managing Director

Shanbor Gupta

Principal

Michael Herzig

Venture Partner

David S. Miller

Co-Founder and Managing Director

Willy Osborn

Venture Partner

Peter Sopher

Investment Partner

Cara Tobin

Venture Partner

Jeffrey Weiss

Senior Venture Partner

Matthew Cohen

Principal

Past deals in Energy Storage

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 that uses electrochemistry for advanced lithium extraction from tough mixtures.

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.

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.

Noon Energy

Venture Round in 2022
Noon Energy is a company based in Palo Alto, California, focused on developing innovative flow battery technology for long-duration energy storage. Founded in 2018, the company aims to make intermittent renewable energy sources, such as solar and wind, more reliable by providing on-demand power. Its rechargeable battery utilizes low-cost energy storage media that separates energy and power capacity, enabling efficient long-duration storage without the need for mining precious metals. This approach supports the scaling of renewable electricity supplies, thereby reducing reliance on fossil fuels, minimizing pollution, and lowering emissions.

Electrified Thermal Solutions

Venture Round in 2022
Electrified Thermal Solutions replace fossil fuels with renewable heat in every furnace, turbine, boiler, and kiln to decarbonize industry. Electrified Thermal Solutions started at MIT in the noisy laboratory basement of the Department of Nuclear Science and Engineering. The goal was simple: start an energy revolution. Founded in 2021, the company is based in Medford, Massachusetts.

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.

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.

60Hertz

Series A in 2021
60Hertz Inc is a software company that specializes in developing a computerized maintenance management system (CMMS) tailored for power plant operators and distributed energy resources, including microgrids and large-scale solar and battery storage systems. Founded in 2016 and based in Anchorage, Alaska, the company’s mobile application facilitates daily operations and maintenance tasks by offering features such as preventive and predictive maintenance planning, work order management, and performance visibility for project owners and fleet managers. The software enhances operator efficiency by providing custom maintenance checklists and integrating with monitoring platforms to create smart work orders. Additionally, 60Hertz's application supports offline functionality and allows for the validation of task completion through photo uploads, thus streamlining operations and reducing costs associated with training and diesel consumption.

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.

ConnectDER

Series B in 2020
ConnectDER LLC is a solar technology company based in Philadelphia, Pennsylvania, specializing in solutions that facilitate the connection of distributed energy resources, particularly solar photovoltaic systems, to residential homes and the grid. The company designs and manufactures innovative meter collars that serve as a connection point between residential electric meters and meter sockets, effectively transforming these sockets into a grid-friendly platform for solar energy, battery storage, and electric vehicle charging. Additionally, ConnectDER offers ConnectDER Cloud, a system that allows fleet operators to access metering and operational data, manage firmware, and oversee the commissioning and decommissioning of ConnectDER units. Founded in 2011 and rebranded in 2015, ConnectDER aims to simplify the integration of renewable energy technologies, benefiting both users and the broader energy grid.

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.

ConnectDER

Series B in 2019
ConnectDER LLC is a solar technology company based in Philadelphia, Pennsylvania, specializing in solutions that facilitate the connection of distributed energy resources, particularly solar photovoltaic systems, to residential homes and the grid. The company designs and manufactures innovative meter collars that serve as a connection point between residential electric meters and meter sockets, effectively transforming these sockets into a grid-friendly platform for solar energy, battery storage, and electric vehicle charging. Additionally, ConnectDER offers ConnectDER Cloud, a system that allows fleet operators to access metering and operational data, manage firmware, and oversee the commissioning and decommissioning of ConnectDER units. Founded in 2011 and rebranded in 2015, ConnectDER aims to simplify the integration of renewable energy technologies, benefiting both users and the broader energy grid.

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.

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.

Quidnet Energy

Seed Round in 2015
Quidnet Energy is a technology-driven energy company that powers the carbon-free electric grid. Its technology is a form of hydroelectric energy storage using time-tested well-drilling and construction technologies to pump water under pressure into subsurface geological reservoirs to store energy. When variable renewable energy is not available, this water is released to drive hydroelectric turbines to power the electric grid. The company was founded in 2013 and is based in Houston with offices in San Francisco and Saratoga Springs, New York.

VCharge

Seed Round in 2011
VCharge, Inc. specializes in intelligent infrastructure for energy management, focusing on transactive electric loads that enhance efficiency and reduce costs. The company develops VNet, a power management platform that coordinates distributed transactive load assets, alongside SmartBricks and SmartHydro, which are controllers for electric thermal storage heating systems. These systems manage loads from electric vehicle charging stations and compressed air systems. VCharge also provides VConsole, a web-based interface that offers control and information for users, utilities, and maintenance personnel. By aggregating and monetizing electric loads with embedded storage, VCharge enables energy arbitrage and grid services, significantly lowering energy costs for homeowners. While the technology is more prevalent in Europe, VCharge operates in North America and has established a presence in the UK. Founded in 2009 and headquartered in Providence, Rhode Island, VCharge operates as a subsidiary of OVO Energy Limited.

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.

OutSmart Power Systems

Seed Round in 2009
OutSmart has developed a solution that provides a detailed and metric driven approach to reduce energy consumption and improve your up-time on mission critical equipment. OutSmart is initially focused on grocery and convenience stores and has shown less than a year payback, identifying 5-15% in energy savings. OutSmart is not a control system– it complements that function by providing detailed information about a store’s consumption that control systems can’t get. At a high level, OutSmart is a system for comprehensive and granular electrical monitoring, but the type of data we can get can not only provides a detailed itemization of energy to baseline and track performance, it is used to understand the performance of equipment and the efficacy of control systems at a detailed level. OutSmart’s competitive advantage stems from its specialized sensor technology, data extraction techniques, and analytics platform (OSAP) which enable unparalleled depth of information, ease of installation, low cost, flexibility and extensibility. OutSmart is located in Natick Massachusetts (15 miles West of Boston) and was founded in February 2008.
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