The Central Oklahoma Clean Cities Coalition (COKCCC) is a U.S. Department of Energy program established in 1995. Sponsored locally by the Association of Central Oklahoma Governments (ACOG), the Oklahoma Department of Commerce, and approximately 50 public and private sector entities, COKCCC collaborates with local fleets to reduce transportation energy use and improve air quality. Each year, stakeholders contribute to reducing over 15 million gasoline gallon equivalents by adopting alternative fuel vehicles and implementing best practices.