The Green Impact Zone is a blighted 150 square block area of Kansas City, MO, where leaders of 10 neighborhood and community development organizations are working together, along with city agencies and other partners, to develop a model sustainable community. The Mid-America Regional Council (MARC), a nonprofit metropolitan planning organization, provides administrative support. The idea is to concentrate resources – including support from several federal sources – in a specific area to demonstrate that a targeted effort can transform a community. To make the zone a model for energy efficiency, programs include weatherization of homes and businesses and installation of a smart grid to support demand-response energy systems and the potential for renewable energy generation. Initial support for the Green Impact Zone came from federal stimulus funds; ongoing funding is a challenge.