Illinois Administrative Code
Title 83 - PUBLIC UTILITIES
Part 287 - RATE CASE TEST YEAR
Section 287.20 - Test Year Options
Universal Citation: 83 IL Admin Code ยง 287.20
Current through Register Vol. 48, No. 52, December 27, 2024
A utility, at its option, may propose either one of the following periods as its proposed test year:
a) Historical. Any consecutive 12 month period, beginning no more than 24 months prior to the date of the utility's filing, for which actual data are available at the time of filing new tariffs; or
b) Future. Any consecutive 12 month period of forecasted data beginning no earlier than the date new tariffs are filed and ending no later than 24 months after the date new tariffs are filed.
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