Where:
R = Utility-determined reconciliation component.
ActNetQIP = The average actual cost of the investment in QIP for the rate zone for the reconciliation year less actual accumulated depreciation and any accumulated deferred income tax (ADIT) liabilities net of deferred tax assets resulting from the of QIP for the rate zone for the reconciliation year. The average actual cost of QIP, net of depreciation and ADIT, shall be computed by using an average of 13 end-of-month balances of QIP less and accumulated depreciation and associated ADIT for the period from December 31 of the year preceding the reconciliation year through December 31 of the reconciliation year. (For utilities electing quarterly historical operation, the amount of the ActNetQIP shall be limited by the provisions of Section 656.70(c) Part.)
AdjNetQIP = AdjNetQIP as defined in Section 656.60. The effective date of the AdjNetQIP will be as disclosed in the document required following a rate case as described in Section 656.60.
PTR = Pre-tax return as described in Section 656.50(a)(1)
ActNetDep = Actual net depreciation expense related to the average investment in QIP for the rate zone for the reconciliation year. Depreciation expense shall be calculated by multiplying the actual investment in QIP by plant account, net of retirements, by the approved depreciation rates for the respective accounts in which the specific items included in the average QIP investment are recorded. (For utilities electing quarterly historical operation, the amount of the ActNetDep shall be limited by the provisions of Section 656.70(c).)
AdjNetDep = AdjNetDep as defined in Section 656.60. The effective date of the AdjNetDep will be as disclosed in the document required following a rate case as described in Section 656.60.
QIPRev = Actual QIP revenues collected during the reconciliation year through the QIP surcharge.
Rpy = The R component from the previous reconciliation year.
Opy = The sum of the O component and the calculated interest attributable to the O component, or the sum of any O components and the calculated interest attributable to the O components included in the calculation of the QIP surcharge percentage during the reconciliation year.
EEA = Excess earnings amount calculated in accordance with subsections (a), (c) and (f)(4). There will only be an EEA when the utility's actual rate of return for the reconciliation year exceeds the overall rate of return authorized by the Commission in the utility's last water or sewer rate proceeding for the rate zone.
Ill. Admin. Code tit. 83, § 656.80