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 Infrastructure

Zeitview

Venture Round in 2025
Zeitview is an aerial data analytics company specializing in drone services for energy and infrastructure sectors. It uses AI and machine learning to analyze visual data, providing actionable insights that enhance asset performance and longevity. Zeitview serves industries such as solar, wind, property management, telecommunications, and utilities.

Bolt.Earth

Series A in 2025
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

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.

Leap

Venture Round in 2023
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.

Zeitview

Series E in 2023
Zeitview is an aerial data analytics company specializing in drone services for energy and infrastructure sectors. It uses AI and machine learning to analyze visual data, providing actionable insights that enhance asset performance and longevity. Zeitview serves industries such as solar, wind, property management, telecommunications, and utilities.

Toucan

Seed Round in 2022
Toucan is a company focused on creating technology that facilitates large-scale climate action by enhancing the voluntary carbon market. It develops digital infrastructure aimed at improving transparency and integrity within this market, which is essential for directing funds to effective climate impact projects. By pioneering the use of tokenized carbon credits, Toucan aims to incorporate both established and emerging environmental assets onto the blockchain. The company's overarching goal is to establish a regenerative financial system that addresses climate change while promoting sustainable revenue flows to impactful initiatives.

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.

Zeitview

Venture Round in 2021
Zeitview is an aerial data analytics company specializing in drone services for energy and infrastructure sectors. It uses AI and machine learning to analyze visual data, providing actionable insights that enhance asset performance and longevity. Zeitview serves industries such as solar, wind, property management, telecommunications, and utilities.

Leap

Series B in 2021
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

Series A in 2021
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.

Zeitview

Series C in 2021
Zeitview is an aerial data analytics company specializing in drone services for energy and infrastructure sectors. It uses AI and machine learning to analyze visual data, providing actionable insights that enhance asset performance and longevity. Zeitview serves industries such as solar, wind, property management, telecommunications, and utilities.

Matter Labs

Series A in 2021
Matter Labs designs and develops blockchain technology that uses zero-knowledge proofs to scale Ethereum and improve privacy, removing interaction obstacles between untrusted parties. The company builds a scaling decentralized application that provides succinctly verifiable computation, enabling businesses and others to prove integrity without disclosing sensitive data. It aims to accelerate public blockchain adoption by offering an open, scalable alternative to existing financial systems. Founded in 2018, it has been associated with Berlin, Germany, and is based in the Cayman Islands.

NCX

Seed Round in 2021
NCX facilitates access to natural capital markets for landowners of all sizes. It connects them with carbon credit buyers via its Natural Capital Exchange platform, delivering significant climate impact through rigorous data and science practices.

Zeitview

Series C in 2020
Zeitview is an aerial data analytics company specializing in drone services for energy and infrastructure sectors. It uses AI and machine learning to analyze visual data, providing actionable insights that enhance asset performance and longevity. Zeitview serves industries such as solar, wind, property management, telecommunications, and utilities.

Arweave

Seed Round in 2020
Founded in 2017 and headquartered in London, Arweave is a technology company specializing in secure data storage using blockchain. Its platform ensures high levels of data replication and security while incentivizing network participants.

Leap

Series A in 2020
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.

Arweave

Seed Round in 2019
Founded in 2017 and headquartered in London, Arweave is a technology company specializing in secure data storage using blockchain. Its platform ensures high levels of data replication and security while incentivizing network participants.

Algorand

Venture Round in 2018
Algorand is a blockchain technology company that operates a decentralized platform for digital currencies and transactions. The platform provides Layer-1 functionality, including Algorand Standard Asset tokens, Atomic Transfers, and Smart Contracts, designed to enable fast, scalable, and low-cost transactions. Founded in 2017 and based in Boston, Algorand aims to address blockchain scalability challenges through rapid, efficient consensus. The company also develops and maintains DeFi applications and digital identity solutions, and offers deployment, consultation, and maintenance services for permissioned blockchain networks to support enterprises and governments while emphasizing privacy, security, and cost efficiency.

Zeitview

Series B in 2018
Zeitview is an aerial data analytics company specializing in drone services for energy and infrastructure sectors. It uses AI and machine learning to analyze visual data, providing actionable insights that enhance asset performance and longevity. Zeitview serves industries such as solar, wind, property management, telecommunications, and utilities.

Algorand

Seed Round in 2018
Algorand is a blockchain technology company that operates a decentralized platform for digital currencies and transactions. The platform provides Layer-1 functionality, including Algorand Standard Asset tokens, Atomic Transfers, and Smart Contracts, designed to enable fast, scalable, and low-cost transactions. Founded in 2017 and based in Boston, Algorand aims to address blockchain scalability challenges through rapid, efficient consensus. The company also develops and maintains DeFi applications and digital identity solutions, and offers deployment, consultation, and maintenance services for permissioned blockchain networks to support enterprises and governments while emphasizing privacy, security, and cost efficiency.

Zeitview

Series A in 2016
Zeitview is an aerial data analytics company specializing in drone services for energy and infrastructure sectors. It uses AI and machine learning to analyze visual data, providing actionable insights that enhance asset performance and longevity. Zeitview serves industries such as solar, wind, property management, telecommunications, and utilities.

Mediachain

Seed Round in 2016
Mediachain is an open media library that utilizes blockchain technology to seamlessly connect media with its creators and relevant information. Founded in 2016 and based in Brooklyn, New York, the company operates as a protocol for registering, identifying, and tracking creative works online. It employs content identification technology to automatically link media to its origin and context, facilitating collaboration among creators, media organizations, and developers on metadata within a universal media library. Mediachain's decentralized architecture allows participants to maintain control over their data while expanding their reach. In April 2017, Mediachain became a subsidiary of Spotify USA Inc.

Cloudflare

Series D in 2015
Cloudflare, Inc. is a San Francisco-based software company that specializes in web performance and security services for businesses globally. It operates a cloud platform that integrates various network services, including security solutions such as Cloud Firewall, Bot Management, and Distributed Denial of Service protection. The company enhances website performance through its Content Delivery Network (CDN) and intelligent routing, while also providing optimization tools for content and images. Furthermore, Cloudflare offers reliability solutions like Load Balancing and DNS services, alongside security features aimed at protecting internal resources through Zero Trust Security and Secure Web Gateway. Its consumer offerings include a DNS resolver and a virtual private network (VPN) designed to secure mobile traffic. Cloudflare serves diverse industries, including technology, healthcare, financial services, and government, and was founded in 2009.

Zeitview

Seed Round in 2015
Zeitview is an aerial data analytics company specializing in drone services for energy and infrastructure sectors. It uses AI and machine learning to analyze visual data, providing actionable insights that enhance asset performance and longevity. Zeitview serves industries such as solar, wind, property management, telecommunications, and utilities.

Cloudflare

Series C in 2013
Cloudflare, Inc. is a San Francisco-based software company that specializes in web performance and security services for businesses globally. It operates a cloud platform that integrates various network services, including security solutions such as Cloud Firewall, Bot Management, and Distributed Denial of Service protection. The company enhances website performance through its Content Delivery Network (CDN) and intelligent routing, while also providing optimization tools for content and images. Furthermore, Cloudflare offers reliability solutions like Load Balancing and DNS services, alongside security features aimed at protecting internal resources through Zero Trust Security and Secure Web Gateway. Its consumer offerings include a DNS resolver and a virtual private network (VPN) designed to secure mobile traffic. Cloudflare serves diverse industries, including technology, healthcare, financial services, and government, and was founded in 2009.

Bolt.Earth

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.

Polygon

Polygon is a blockchain scalability platform designed to enhance the usability and convenience of decentralized transactions. By offering a structured and user-friendly environment for Ethereum scaling and infrastructure development, Polygon aims to address the slow, expensive, and complex nature of current decentralized systems. The platform combines various scaling solutions and development tools, prioritizing user experience to facilitate quicker and more secure transactions. Polygon's mission is to drive mainstream adoption of blockchain technology, enabling a more accessible and efficient decentralized ecosystem.

Volteras

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.
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