Community Aggregation, also called Government Aggregation, is a way for communities to exercise their right to choose their energy provider as a single group. Members of a community, usually led by their local municipality or city leadership, use their collective purchasing power to get a competitive market rate for its members. Community Aggregations have proven to be an effective means for many municipalities to provide affordable electricity for residents and businesses within their communities. Community Aggregation programs can also be used to support the sustainable energy goals of the community.