Energy Supply Options (Residential)
Ameren Illinois Customers:
Customers of Ameren’s Illinois utilities, AmerenCIPS, AmerenCILCO and AmerenIP, have three options for their energy supply:
	Basic Generation Service (BGS) The default option that represents the energy price obtained by Ameren Illinois utilities through the independently managed and state-monitored (Illinois Commerce Commission) auction.    More about the BGS energy supply option:
	-	Energy provided to the customer at a fixed price by an Ameren Illinois utility.
	-	Service for residential and small non-residential customers that do not choose a Retail Electric Supplier (RES).
	-	Service that will include summer and non-summer charges.
	Power and Energy Supply Riders for BGS:
		AmerenCILCO Rider BGS: Basic Generation Service
		AmerenCIPS Rider BGS: Basic Generation Service
		AmerenIP Rider BGS: Basic Generation Service
	Real Time Pricing (RTP) An option that allows customers (except DS-5 lighting customers) to pay fluctuating hourly market price for electricity.    More about the RTP energy supply option:
	-	Energy priced at actual hourly MISO Locational Marginal Prices (LMP) and provided by an Ameren Illinois utility.
	-	Customers are required to have Interval Metering before this option can be selected.
	-	Option allows unlimited switching to and from RES within DASR rules.
	Power and Energy Supply Riders for RTP:
		AmerenCILCO Rider RTP: Real Time Pricing
		AmerenCIPS Rider RTP: Real Time Pricing
		AmerenIP Rider RTP: Real Time Pricing
	Retail Electric Supplier (RES) Service provided by another supplier.
Electric Service Tariffs:
	AmerenCILCO Electric Service Rates
	AmerenCIPS Electric Service Rates
	AmerenIP Electric Service Rates