To solidify itself as a low-carbon leader and support economic growth through energy efficiency, the City of Milwaukee has undertaken a comprehensive energy efficiency program for buildings. Building efficiency in the commercial sector provide particular opportunity for the City to curtail greenhouse gas emissions while epitomizing public-private leadership on greenhouse gas emissions reduction. Utilizing a mix of federal funding paired with a financing strategy that incentivizes clean energy upgrades, Milwaukee is on a path to retrofit 200 commercial and industrial buildings with energy-efficient upgrades to meet its goal of 20% building energy reduction over a decade.