SOSV

SOSV, established in 1995 and headquartered in Princeton, New Jersey, is a global venture capital firm specializing in early-stage investments. It focuses on deep tech innovations in the health and environmental sectors, supporting founders with breakthrough technologies through its HAX and IndieBio startup development programs. SOSV provides resources, facilities, and lab equipment to accelerate product development and scale, with a track record of helping its portfolio companies secure subsequent funding rounds led by top-tier investors.

Hugh Bowen

Associate

Weichang Ge

Analyst

Bradford Higgins

Venture Partner

Katie Hoffman

General Partner

Mohan Iyer

General Partner

Benjamin Joffe

Partner

Ji Ke

Partner

Stephen McCann

CFO and General Partner

Carthach McCarthy

CFO

Paul Monaghan

Principal

Brian Murphy

Finance Director

Eric Ramsay

Analyst

Sabriya Stukes Ph.D

Partner

Past deals in Solar Energy

Kfobix

Seed Round in 2025
Kfobix is a technology company specializing in the development and application of advanced nanocomposite coatings for enhancing the durability and efficiency of energy infrastructure. The company's flagship product is a patented superhydrophobic coating, designed to prevent ice formation and water accumulation on surfaces such as wind turbine blades and power lines. This coating, applied via a simple spray method, offers high transparency, long-lasting durability, and ease of application, thereby reducing maintenance costs and operational disruptions in the energy sector. Additionally, Kfobix is pioneering anti-dirt coatings for solar panels, aiming to maximize their efficiency and output. The company's mission is to facilitate a seamless transition to renewable energy sources by providing practical solutions to pressing challenges in the sector, ultimately promoting a cleaner, more reliable, and sustainable energy future.

Mesh++

Seed Round in 2024
Mesh++ is a developer of solar-powered wireless communication technologies aimed at providing high-speed WiFi access in public spaces and remote areas. The company specializes in solar-powered routers that leverage mobile processing power to deliver reliable internet connectivity outdoors. By focusing on sustainable solutions, Mesh++ enables users to access high-speed internet at a low cost, enhancing connectivity in environments where traditional infrastructure may be lacking.

Altiro Energy

Seed Round in 2023
Altiro Energy is a renewable energy power generation company that specializes in cleantech renewable power systems. The company has developed an innovative energy storage technology aimed at providing long-term energy storage solutions with zero emissions. Utilizing an iron-based powder, Altiro Energy's technology allows for efficient cycling through charging and discharging processes. This capability is particularly beneficial for wind and solar farms, as it helps stabilize energy production and minimizes waste when energy supply exceeds demand. Through its focus on cost competitiveness and safety, Altiro Energy contributes to the advancement of sustainable energy solutions.

Mesh++

Convertible Note in 2023
Mesh++ is a developer of solar-powered wireless communication technologies aimed at providing high-speed WiFi access in public spaces and remote areas. The company specializes in solar-powered routers that leverage mobile processing power to deliver reliable internet connectivity outdoors. By focusing on sustainable solutions, Mesh++ enables users to access high-speed internet at a low cost, enhancing connectivity in environments where traditional infrastructure may be lacking.

Solano Energy

Pre Seed Round in 2022
Solano Energy is an innovative power company established by a team of engineers from Oxford and Cambridge. The company focuses on making renewable energy accessible to all by developing smart solar energy equipment that automatically generates, stores, and distributes energy. Solano Energy aims to address the challenges associated with creating a renewable energy-capable network without the need for significant upfront capital expenditures. Through its technology, the company enables consumers to adopt a sustainable lifestyle by providing affordable and efficient renewable energy solutions.

Mesh++

Venture Round in 2021
Mesh++ is a developer of solar-powered wireless communication technologies aimed at providing high-speed WiFi access in public spaces and remote areas. The company specializes in solar-powered routers that leverage mobile processing power to deliver reliable internet connectivity outdoors. By focusing on sustainable solutions, Mesh++ enables users to access high-speed internet at a low cost, enhancing connectivity in environments where traditional infrastructure may be lacking.

Khepra

Seed Round in 2021
Khepra is a company based in San Francisco, California, that focuses on transforming plastics and agricultural waste into renewable fuels using innovative technology. The company employs a proprietary process that combines ultrasonic technology, frictive heating, cavitation, and acoustic pressure to efficiently break down waste streams. This method utilizes excess renewable electricity generated from solar and wind sources, particularly during times of low energy generation or curtailment. By converting waste into drop-in fuels and renewable chemicals without extraction, Khepra aims to support industries in their transition towards cleaner energy solutions and promote sustainability.

VoltStorage

Series B in 2021
VoltStorage GmbH, based in Olching, Germany, specializes in developing and producing power storage devices that utilize eco-friendly redox flow technology. The company's flagship product, VoltStorage, is a vanadium redox flow battery system designed to store excess electricity generated by solar panels during the day for use at night. This innovative approach enables homeowners to access renewable energy around the clock, promoting sustainability and environmental responsibility. In addition to its products, VoltStorage offers installation and technical support services, ensuring customers can effectively integrate these systems into their homes. The company aims to make renewable energy more accessible and contribute to a cleaner, fairer world for future generations.

Mesh++

Seed Round in 2021
Mesh++ is a developer of solar-powered wireless communication technologies aimed at providing high-speed WiFi access in public spaces and remote areas. The company specializes in solar-powered routers that leverage mobile processing power to deliver reliable internet connectivity outdoors. By focusing on sustainable solutions, Mesh++ enables users to access high-speed internet at a low cost, enhancing connectivity in environments where traditional infrastructure may be lacking.

Mesh++

Convertible Note in 2020
Mesh++ is a developer of solar-powered wireless communication technologies aimed at providing high-speed WiFi access in public spaces and remote areas. The company specializes in solar-powered routers that leverage mobile processing power to deliver reliable internet connectivity outdoors. By focusing on sustainable solutions, Mesh++ enables users to access high-speed internet at a low cost, enhancing connectivity in environments where traditional infrastructure may be lacking.

VoltStorage

Venture Round in 2020
VoltStorage GmbH, based in Olching, Germany, specializes in developing and producing power storage devices that utilize eco-friendly redox flow technology. The company's flagship product, VoltStorage, is a vanadium redox flow battery system designed to store excess electricity generated by solar panels during the day for use at night. This innovative approach enables homeowners to access renewable energy around the clock, promoting sustainability and environmental responsibility. In addition to its products, VoltStorage offers installation and technical support services, ensuring customers can effectively integrate these systems into their homes. The company aims to make renewable energy more accessible and contribute to a cleaner, fairer world for future generations.

Khepra

Seed Round in 2020
Khepra is a company based in San Francisco, California, that focuses on transforming plastics and agricultural waste into renewable fuels using innovative technology. The company employs a proprietary process that combines ultrasonic technology, frictive heating, cavitation, and acoustic pressure to efficiently break down waste streams. This method utilizes excess renewable electricity generated from solar and wind sources, particularly during times of low energy generation or curtailment. By converting waste into drop-in fuels and renewable chemicals without extraction, Khepra aims to support industries in their transition towards cleaner energy solutions and promote sustainability.

Khepra

Convertible Note in 2020
Khepra is a company based in San Francisco, California, that focuses on transforming plastics and agricultural waste into renewable fuels using innovative technology. The company employs a proprietary process that combines ultrasonic technology, frictive heating, cavitation, and acoustic pressure to efficiently break down waste streams. This method utilizes excess renewable electricity generated from solar and wind sources, particularly during times of low energy generation or curtailment. By converting waste into drop-in fuels and renewable chemicals without extraction, Khepra aims to support industries in their transition towards cleaner energy solutions and promote sustainability.

VoltStorage

Convertible Note in 2020
VoltStorage GmbH, based in Olching, Germany, specializes in developing and producing power storage devices that utilize eco-friendly redox flow technology. The company's flagship product, VoltStorage, is a vanadium redox flow battery system designed to store excess electricity generated by solar panels during the day for use at night. This innovative approach enables homeowners to access renewable energy around the clock, promoting sustainability and environmental responsibility. In addition to its products, VoltStorage offers installation and technical support services, ensuring customers can effectively integrate these systems into their homes. The company aims to make renewable energy more accessible and contribute to a cleaner, fairer world for future generations.

Mesh++

Seed Round in 2019
Mesh++ is a developer of solar-powered wireless communication technologies aimed at providing high-speed WiFi access in public spaces and remote areas. The company specializes in solar-powered routers that leverage mobile processing power to deliver reliable internet connectivity outdoors. By focusing on sustainable solutions, Mesh++ enables users to access high-speed internet at a low cost, enhancing connectivity in environments where traditional infrastructure may be lacking.

NuLeaf Tech

Convertible Note in 2019
NuLeaf Tech, Inc., established in 2015 and based in Cupertino, California, specializes in manufacturing innovative wastewater treatment systems and solar cells targeted at breweries, wineries, and agricultural producers. The company addresses the growing challenge of on-grid wastewater treatment plants, which are increasingly inadequate due to urbanization and climate change. NuLeaf Tech's flagship product, the NuTree, is a modular, on-site wastewater treatment device that allows users to treat their own water using natural processes. Designed to be as manageable as a small garden, the NuTree can be scaled to accommodate varying needs, from individual households to larger businesses, with units priced under $10,000 each. The system promotes a circular economy by enabling water recycling and bioenergy production, while also supporting vertical farming. NuLeaf Tech is exploring pilot projects in locations such as Madagascar, India, and Portland, Oregon, as part of a broader strategy to penetrate the $270 billion U.S. wastewater treatment market, particularly in the Pacific Northwest and rural communities.

Mesh++

Seed Round in 2018
Mesh++ is a developer of solar-powered wireless communication technologies aimed at providing high-speed WiFi access in public spaces and remote areas. The company specializes in solar-powered routers that leverage mobile processing power to deliver reliable internet connectivity outdoors. By focusing on sustainable solutions, Mesh++ enables users to access high-speed internet at a low cost, enhancing connectivity in environments where traditional infrastructure may be lacking.

ChefCharger

Seed Round in 2018
ChefCharger Inc. is a Boston-based company that specializes in the development, manufacturing, and sale of integrated charging devices tailored for the hospitality industry, specifically restaurants, bars, and cafes. Founded in 2016, ChefCharger offers a range of multifunctional products that combine charging capabilities with traditional tabletop decor items such as candleholders, drink coasters, and customizable vases. These devices not only enable patrons to charge their mobile phones but are also connected to a cloud platform that allows for the display of targeted video advertisements. ChefCharger has evolved from a startup into a mature company, focusing on innovative wireless power and solar energy solutions, while also providing custom engineering at mass production levels.

VoltStorage

Seed Round in 2018
VoltStorage GmbH, based in Olching, Germany, specializes in developing and producing power storage devices that utilize eco-friendly redox flow technology. The company's flagship product, VoltStorage, is a vanadium redox flow battery system designed to store excess electricity generated by solar panels during the day for use at night. This innovative approach enables homeowners to access renewable energy around the clock, promoting sustainability and environmental responsibility. In addition to its products, VoltStorage offers installation and technical support services, ensuring customers can effectively integrate these systems into their homes. The company aims to make renewable energy more accessible and contribute to a cleaner, fairer world for future generations.

NuLeaf Tech

Seed Round in 2018
NuLeaf Tech, Inc., established in 2015 and based in Cupertino, California, specializes in manufacturing innovative wastewater treatment systems and solar cells targeted at breweries, wineries, and agricultural producers. The company addresses the growing challenge of on-grid wastewater treatment plants, which are increasingly inadequate due to urbanization and climate change. NuLeaf Tech's flagship product, the NuTree, is a modular, on-site wastewater treatment device that allows users to treat their own water using natural processes. Designed to be as manageable as a small garden, the NuTree can be scaled to accommodate varying needs, from individual households to larger businesses, with units priced under $10,000 each. The system promotes a circular economy by enabling water recycling and bioenergy production, while also supporting vertical farming. NuLeaf Tech is exploring pilot projects in locations such as Madagascar, India, and Portland, Oregon, as part of a broader strategy to penetrate the $270 billion U.S. wastewater treatment market, particularly in the Pacific Northwest and rural communities.

Mesh++

Pre Seed Round in 2017
Mesh++ is a developer of solar-powered wireless communication technologies aimed at providing high-speed WiFi access in public spaces and remote areas. The company specializes in solar-powered routers that leverage mobile processing power to deliver reliable internet connectivity outdoors. By focusing on sustainable solutions, Mesh++ enables users to access high-speed internet at a low cost, enhancing connectivity in environments where traditional infrastructure may be lacking.

NuLeaf Tech

Pre Seed Round in 2017
NuLeaf Tech, Inc., established in 2015 and based in Cupertino, California, specializes in manufacturing innovative wastewater treatment systems and solar cells targeted at breweries, wineries, and agricultural producers. The company addresses the growing challenge of on-grid wastewater treatment plants, which are increasingly inadequate due to urbanization and climate change. NuLeaf Tech's flagship product, the NuTree, is a modular, on-site wastewater treatment device that allows users to treat their own water using natural processes. Designed to be as manageable as a small garden, the NuTree can be scaled to accommodate varying needs, from individual households to larger businesses, with units priced under $10,000 each. The system promotes a circular economy by enabling water recycling and bioenergy production, while also supporting vertical farming. NuLeaf Tech is exploring pilot projects in locations such as Madagascar, India, and Portland, Oregon, as part of a broader strategy to penetrate the $270 billion U.S. wastewater treatment market, particularly in the Pacific Northwest and rural communities.

VoltStorage

Seed Round in 2017
VoltStorage GmbH, based in Olching, Germany, specializes in developing and producing power storage devices that utilize eco-friendly redox flow technology. The company's flagship product, VoltStorage, is a vanadium redox flow battery system designed to store excess electricity generated by solar panels during the day for use at night. This innovative approach enables homeowners to access renewable energy around the clock, promoting sustainability and environmental responsibility. In addition to its products, VoltStorage offers installation and technical support services, ensuring customers can effectively integrate these systems into their homes. The company aims to make renewable energy more accessible and contribute to a cleaner, fairer world for future generations.

VoltStorage

Seed Round in 2016
VoltStorage GmbH, based in Olching, Germany, specializes in developing and producing power storage devices that utilize eco-friendly redox flow technology. The company's flagship product, VoltStorage, is a vanadium redox flow battery system designed to store excess electricity generated by solar panels during the day for use at night. This innovative approach enables homeowners to access renewable energy around the clock, promoting sustainability and environmental responsibility. In addition to its products, VoltStorage offers installation and technical support services, ensuring customers can effectively integrate these systems into their homes. The company aims to make renewable energy more accessible and contribute to a cleaner, fairer world for future generations.

VoltStorage

Convertible Note in 2016
VoltStorage GmbH, based in Olching, Germany, specializes in developing and producing power storage devices that utilize eco-friendly redox flow technology. The company's flagship product, VoltStorage, is a vanadium redox flow battery system designed to store excess electricity generated by solar panels during the day for use at night. This innovative approach enables homeowners to access renewable energy around the clock, promoting sustainability and environmental responsibility. In addition to its products, VoltStorage offers installation and technical support services, ensuring customers can effectively integrate these systems into their homes. The company aims to make renewable energy more accessible and contribute to a cleaner, fairer world for future generations.

VoltStorage

Seed Round in 2016
VoltStorage GmbH, based in Olching, Germany, specializes in developing and producing power storage devices that utilize eco-friendly redox flow technology. The company's flagship product, VoltStorage, is a vanadium redox flow battery system designed to store excess electricity generated by solar panels during the day for use at night. This innovative approach enables homeowners to access renewable energy around the clock, promoting sustainability and environmental responsibility. In addition to its products, VoltStorage offers installation and technical support services, ensuring customers can effectively integrate these systems into their homes. The company aims to make renewable energy more accessible and contribute to a cleaner, fairer world for future generations.

Wakati

Seed Round in 2015
Wakati is a technology company focused on enhancing the shelf life of fruits and vegetables for smallholder farmers in developing countries. Their solar-powered device utilizes a small 3-watt solar panel to create a sterilized micro-climate that significantly extends the storage life of crops. This innovation addresses the pressing issue of food waste, as nearly 50% of produce is lost due to inadequate storage solutions in less developed regions. By providing affordable and sustainable technology, Wakati aims to empower farmers, reduce food waste, and improve living conditions by enabling longer storage periods for their harvests.

Seeder

Venture Round in 2015
Seeder offers zero-cost solar financing solutions for commercial and industrial rooftops and connects these projects to the project investors and structures power purchase agreements to get the building's savings of 10-15% on the electricity. Seeder leverage a diverse network of pre-qualified vendors and has the ability to collect multiple quotes and proposals. Seeder also offers advisory and development services to facilitate on and off-site power purchase transactions for solar and other renewable energy procurement in China. It helps corporations lower their electricity bills by up to 20%, boost their visibility, and reduce their carbon footprint all while achieving their global renewable energy goals

Seeder

Seed Round in 2013
Seeder offers zero-cost solar financing solutions for commercial and industrial rooftops and connects these projects to the project investors and structures power purchase agreements to get the building's savings of 10-15% on the electricity. Seeder leverage a diverse network of pre-qualified vendors and has the ability to collect multiple quotes and proposals. Seeder also offers advisory and development services to facilitate on and off-site power purchase transactions for solar and other renewable energy procurement in China. It helps corporations lower their electricity bills by up to 20%, boost their visibility, and reduce their carbon footprint all while achieving their global renewable energy goals
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