Electric Supply Options - Definitions
	Retail Electric Supplier (RES)―Illinois customers have the right to choose a third-party supplier to provide their electricity. See RES list for those registered with Ameren to serve residential customers. See RES list for those registered with Ameren to serve non-residential customers. Ameren will continue as the delivery services company for RES customers and will continue to respond to service calls, outages, and emergencies.