Illinois Administrative Code
Title 83 - PUBLIC UTILITIES
Part 285 - STANDARD INFORMATION REQUIREMENTS FOR PUBLIC UTILITIES AND TELECOMMUNICATIONS CARRIERS IN FILING FOR AN INCREASE IN RATES
Subpart I - PLANNING AND OPERATIONS SCHEDULES FOR GAS AND/OR ELECTRIC UTILITIES
Section 285.6015 - Schedule F-3: Electric Utility Marginal Energy Costs

Electric utilities that own generating assets shall provide on Schedule F-3 the marginal energy costs by costing period (summer, winter, on-peak, off-peak, etc.) for the test year. As work papers supporting this schedule, provide a description of the calculation of the marginal costs, the major assumptions, and support data from production cost studies.