Union Square Ventures

Union Square Ventures is a New York-based venture capital firm founded in 2003 that invests across stages from seed to growth in internet-enabled companies. It concentrates on the applications layer of the web, internet services, and mobile platforms that build large networks and benefit from network effects. The firm seeks opportunities where information technology enables scalable business models in sectors such as media, marketing, fintech, climate tech, cryptonetworks, healthcare, and IT-enabled services. Typical initial investments start around $1 million, with larger commitments in select Series A rounds and total checks often reaching up to $20 million per company. It aims to lead investments and maintains active involvement with founders. Primary focus markets include New York, San Francisco, London, and Berlin, reflecting a global footprint with network-driven growth.

Brad Burnham

Partner

John Buttrick

Partner

Grace Carney

Analyst

Nick Grossman

General Partner

Rebecca Kaden

General Partner

Past deals in Utilities

Cactos

Venture Round in 2025
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.

Radiant

Series C in 2024
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

Series A in 2024
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.

David Energy

Series A in 2022
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

Series A in 2022
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

Series A in 2020
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.
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