PEORIA, Ill., July 19, 2011 /PRNewswire/ -- When it comes to electricity supply, Ameren Illinois reminds customers they have choices that could help them save money. Ameren Illinois is an energy delivery company responsible for delivering energy to homes and businesses reliably, safely and efficiently. Customers have the option of receiving electricity from Ameren Illinois or from an alternative retail electricity supplier certified by Illinois Commerce Commission (ICC). Detailed information about electricity supply choices is available at IllinoisPowerSwitch.com. Also, residential customers may call 1-800-755-5000 and business customers may call 1-800-232-2477. "Selecting an electricity supplier is similar to purchasing an automobile insurance policy. You begin by shopping various companies and getting quotes that are based on your individual and family needs. You compare the quotes and make your decision based on what is best for you," said Stan Ogden, vice president of Ameren Illinois Customer Service and Public Relations. "Before you begin the process of selecting an electricity supplier, familiarize yourself with your utility bill. Understand your current cost of electricity and your usage patterns so you can be a smart shopper." Ameren Illinois customers can visit IllinoisPowerSwitch.com or contact Customer Service by phone for the names and phone numbers of alternative retail electricity suppliers. In addition, some suppliers or their agents may directly contact customers, such as by telephone or direct mail. Additional information about electricity choice and certified suppliers in the Ameren Illinois service territory is available at the ICC website: PlugInIllinois.org. Customers who do not choose an alternative energy supplier will continue to receive their electricity from Ameren Illinois. Electricity supplied by Ameren Illinois is procured by the Illinois Power Agency through a competitive procurement process approved by the ICC. Ameren Illinois does not profit from the electric supply portion of the utility bill.