Union Square Ventures

Presto is a software platform to power magical charging experiences for fleets, mobility providers, and businesses.We believe that access to reliable and affordable charging is the key to unlocking mass electrification and fighting climate change.

Cactos specializes in smart energy storage systems designed to optimize energy usage and ensure reliable power supply. Their systems are installed on client premises, providing backup power during outages and supporting renewable energy integration.

Bolt.Earth is a leading provider of electric vehicle (EV) charging infrastructure solutions in India, operating over 20,000 charging points and focusing on promoting cleaner mobility in emerging markets. The company offers a comprehensive platform that enables users to locate the nearest charging stations conveniently. In addition, Bolt.Earth's technology facilitates over-the-air updates, allowing fleet operators, vehicle owners, and automotive businesses to integrate smart and sustainable services. By developing a robust network and advanced operating systems, Bolt.Earth is committed to enhancing the adoption of electric vehicles and contributing to a greener future.

Radiant is a clean energy startup based in Los Angeles, California, that specializes in the development of portable nuclear microreactors. Founded in 2019, the company aims to provide an alternative to fossil fuels for both military and commercial applications. Its flagship product, the Kaleidos microreactor, is designed to fit within a shipping container, allowing for transportation by air, ship, and road. This innovative microreactor serves as a zero-emissions power source, making it particularly suitable for remote locations and critical applications where traditional diesel generators are typically used.

David Energy is an innovative energy company that optimizes electricity consumption and management via advanced software and hardware solutions. It aims to reduce costs, increase renewable energy adoption, and enhance sustainability through smart energy management.

UNIGRID develops sustainable and affordable sodium-based batteries using abundant materials. They aim to put a battery into every home, the grid, and other distributed energy storage applications. They use dense Na-alloy and a non-flammable electrolyte, which led to high energy density and improved safety.

Anthro Energy is developing advanced battery technologies to address key challenges in energy storage. They focus on creating ruggedized batteries that enhance safety and enable an electrified future.

Transmutex is a Swiss company founded in 2019 that specializes in innovative nuclear technology aimed at significantly reducing existing nuclear waste. The company leverages advanced techniques, including particle accelerators, to transmute long-lived nuclear waste into less harmful materials while simultaneously generating carbon-free energy. This energy can be reintegrated into the power grid or utilized for green hydrogen production. Comprising a diverse team of physicists, computer scientists, and environmentalists, Transmutex is pioneering a new approach to nuclear energy that offers scalable, carbon-free solutions without the typical challenges associated with conventional nuclear power plants.

Lydian aims to accelerate the decarbonization of the chemical industry by electrifying the chemical production process. Founded in 2021 by Branko Zugic, Lydian is headquartered in

Leap is a marketplace for Distributed Energy Resources to participate in the energy market. It allows every connected device to help balance the grid, and get paid for it and access wholesale markets through a single API and help build the flexible, renewable grid of the future. Leap aims to make global energy markets accessible to anyone, starting with demand response and expanding into generation and ancillary services. Leap was founded by Thomas Folker and Remco Van Den Elzen.

Odyssey Energy Solutions, founded in 2017 and based in Boulder, Colorado, offers a web-based data platform designed to streamline the development and deployment of mini-grids in emerging markets. The platform enables project developers to effectively manage and analyze mini-grid data through various software tools and data analytics. By facilitating communication and connection among developers, financiers, vendors, and governmental and donor organizations, Odyssey enhances collaboration within the mini-grid sector, ultimately supporting sustainable energy solutions in underserved regions.

Anthro Energy is developing advanced battery technologies to address key challenges in energy storage. They focus on creating ruggedized batteries that enhance safety and enable an electrified future.

XFuel is a company focused on producing sustainable and net-zero advanced fuels for the road, marine, and aviation sectors. Founded in 2010 and headquartered in Dublin, Ireland, with additional operations in Palma de Mallorca, Spain, XFuel has developed innovative technology for the efficient conversion of biomass waste into low-carbon fuels. This process results in a clean, drop-in fuel that can be utilized by distributors and consumers globally, offering a cost-effective alternative to traditional fossil fuels. XFuel's production methods lead to up to 85% fewer greenhouse gas emissions compared to conventional fuel production, with a clear pathway towards achieving carbon-neutral and carbon-negative fuel solutions.

Shift EV is an electric mobility technology startup focused on advancing the adoption of electric vehicles in commercial fleets. The company specializes in the development of electric vehicle batteries and employs proprietary electro-fitting technology to convert conventional vehicles into electric-run models. Shift EV aims to support fleet owners, operators, and financiers by providing critical insights into electric vehicle performance, including operational cost savings, electricity consumption, emissions reduction, available battery range, and mileage. By facilitating the transition to electric-driven fleets, Shift EV contributes to environmental sustainability and the conservation of natural resources, particularly in emerging markets.

David Energy is an innovative energy company that optimizes electricity consumption and management via advanced software and hardware solutions. It aims to reduce costs, increase renewable energy adoption, and enhance sustainability through smart energy management.

Radiant is a clean energy startup based in Los Angeles, California, that specializes in the development of portable nuclear microreactors. Founded in 2019, the company aims to provide an alternative to fossil fuels for both military and commercial applications. Its flagship product, the Kaleidos microreactor, is designed to fit within a shipping container, allowing for transportation by air, ship, and road. This innovative microreactor serves as a zero-emissions power source, making it particularly suitable for remote locations and critical applications where traditional diesel generators are typically used.

Leap is a marketplace for Distributed Energy Resources to participate in the energy market. It allows every connected device to help balance the grid, and get paid for it and access wholesale markets through a single API and help build the flexible, renewable grid of the future. Leap aims to make global energy markets accessible to anyone, starting with demand response and expanding into generation and ancillary services. Leap was founded by Thomas Folker and Remco Van Den Elzen.

Bolt.Earth is a leading provider of electric vehicle (EV) charging infrastructure solutions in India, operating over 20,000 charging points and focusing on promoting cleaner mobility in emerging markets. The company offers a comprehensive platform that enables users to locate the nearest charging stations conveniently. In addition, Bolt.Earth's technology facilitates over-the-air updates, allowing fleet operators, vehicle owners, and automotive businesses to integrate smart and sustainable services. By developing a robust network and advanced operating systems, Bolt.Earth is committed to enhancing the adoption of electric vehicles and contributing to a greener future.

Transmutex is a Swiss company founded in 2019 that specializes in innovative nuclear technology aimed at significantly reducing existing nuclear waste. The company leverages advanced techniques, including particle accelerators, to transmute long-lived nuclear waste into less harmful materials while simultaneously generating carbon-free energy. This energy can be reintegrated into the power grid or utilized for green hydrogen production. Comprising a diverse team of physicists, computer scientists, and environmentalists, Transmutex is pioneering a new approach to nuclear energy that offers scalable, carbon-free solutions without the typical challenges associated with conventional nuclear power plants.

Remora develops carbon capture technology tailored for trains and trucks. Their device extracts at least 80% of a semi-truck's carbon emissions directly from the tailpipe, purifies it, and sells the CO2 to end-users for long-term storage. This generates revenue for fleet operators, enabling reduced emissions and addressing national CO2 shortages.

David Energy is an innovative energy company that optimizes electricity consumption and management via advanced software and hardware solutions. It aims to reduce costs, increase renewable energy adoption, and enhance sustainability through smart energy management.

Leap is a marketplace for Distributed Energy Resources to participate in the energy market. It allows every connected device to help balance the grid, and get paid for it and access wholesale markets through a single API and help build the flexible, renewable grid of the future. Leap aims to make global energy markets accessible to anyone, starting with demand response and expanding into generation and ancillary services. Leap was founded by Thomas Folker and Remco Van Den Elzen.

Volteras provides a data platform for the energy ecosystem, collecting, standardizing, and optimizing data from hundreds of energy devices into a single data model. Its Volteras Connect service enables businesses to use this data to create new revenue streams, reduce costs, and enable new business models. The platform securely connects vehicles, chargers, and energy systems, supporting location tracking, live charging data, a uniform naming convention, and a consolidated data structure to help automobile businesses access energy-device data and plan fleets.

Bolt.Earth is a leading provider of electric vehicle (EV) charging infrastructure solutions in India, operating over 20,000 charging points and focusing on promoting cleaner mobility in emerging markets. The company offers a comprehensive platform that enables users to locate the nearest charging stations conveniently. In addition, Bolt.Earth's technology facilitates over-the-air updates, allowing fleet operators, vehicle owners, and automotive businesses to integrate smart and sustainable services. By developing a robust network and advanced operating systems, Bolt.Earth is committed to enhancing the adoption of electric vehicles and contributing to a greener future.