220 ILCS 5/16-121

Non-discrimination; adoption of rules and regulations. The Commission shall adopt rules and regulations no later than 180 days after the effective date of this amendatory Act of 1997 governing the relationship between the electric utility and its affiliates, and ensuring nondiscrimination in services provided to the utility's affiliate and any alternative retail electric supplier, including without limitation, cost allocation, cross-subsidization and information sharing.