Synopsis As Introduced Amends the Electric Service Customer Choice and Rate Relief Law of 1997 in the Public Utilities Act. Provides that the "mandatory transition period" extends through the date on which the Illinois Commerce Commission has approved declarations of competitive service for all classes of service offered in the service areas of all electric utilities that, on December 31, 2005, served at least 100,000 customers (now, the mandatory transition period extends through January 1, 2007). Prohibits the Commission from taking certain actions prior to 2010 (now, the prohibition is during the mandatory transition period) with respect to (i) initiating, authorizing, or ordering any change by way of increase or (ii) in approving an application for a merger, imposing a condition requiring any filing for an increase, decrease, or change in or other review of an electric utility's rates or enforcing such a condition. Deletes a provision prohibiting the Commission from initiating, authorizing, or ordering any change by way of a decrease. Deletes a provision that provides that the Commission is not prohibited from approving the application of an electric utility to implement an alternative to rate of return regulation or a regulatory mechanism that rewards or penalizes the utility through adjustment of rates based on utility performance. Provides that, during the remainder of the mandatory transition period, if any, the Commission may modify rates. Requires the Commission to hold a hearing on any petition by an electric utility requesting the Commission to declare a tariffed service provided by the utility to be a competitive service (now, the Commission shall hold a hearing if the Commission deems it necessary). Provides that the Commission shall only declare the class of tariffed service to be a competitive service if the electric utility demonstrates that at least 33% of the customers in the electric utility's service area that are eligible to take the class of tariffed service instead take service from alternative retail electric suppliers and that at least 3 alternative retail electric suppliers provide service that is comparable to the class of tariffed service to those customers in the utility's service area that do not take service from the electric utility (now, the Commission is required to declare the service to be a competitive service for an identifiable customer segment or group of customers or a clearly defined geographical area within the electricity's service area if the service or a reasonably equivalent substitute service is reasonably available to the customer segment or group or in the defined geographical area at a reasonable price from one or more other providers other than the electric utility or an affiliate and the utility has lost or is reasonably likely to lose business for the service to the other provider or providers). Requires the Commission to make its determination and issue its final order declaring or refusing to declare the service to be a competitive service within 180 (now, 120) days after the date the petition is filed. Deletes provisions that, if the Commission fails to make the determination within that time results within that time period, the petition is deemed to be granted. Effective immediately.