CUSP is the Canadian Partner Network to the Urban Sustainability Directors Network (USDN), a peer-to-peer network of more than 800 local government professionals from 185+ cities across the United States and Canada dedicated to creating a healthier environment, economic prosperity, and increased social equity. USDN's dynamic network enables sustainability directors and staff to share best practices and accelerate the application of good ideas across North America.

While CUSP's core operations are supported by Canadian philanthopic organizations, a number of CUSP's priority projects and peer exchange workshops are funded from grants available through USDN.