About Us

Serving the community since 1910, Sun Prairie Utilities (SPU)  is a not-for-profit, locally-owned municipal electric and water utility that provides safe, reliable, and cost-competitive services to approximately 33,000 residents and businesses, mostly within the city limits of Sun Prairie, Wisconsin. Local representation and control allow all citizens to have a voice in how our utility can best meet the community’s needs. As a co-owner of WPPI Energy, a nonprofit, Sun Prairie-based power company, we purchase cost-competitive electricity for our community and take advantage of the latest technologies to better serve our customers.

We’re proud to be your locally owned and operated utility!