Residents of Eureka, Illinois have reason to celebrate. On May 9, 2012, after Good Energy negotiated a contract with energy supplier Homefield Energy, the supply cost of energy for Eureka residents dropped precipitously. As a result, residents will see savings of up to 35 percent on the cost of their energy supply on their next bill. Though Homefield Energy will be the new supply company, Ameren will continue to act as the energy distribution company for southern and central Illinois. If residents so choose, they can continue to buy their energy supply from Ameren as well, although the price will be higher than the one Good Energy negotiated.