No public utility shall recover from its ratepayers any Regulatory Proceeding Expense unless such expense has been found by the Commission to have been reasonable and prudently incurred. The Commission will set regulatory proceeding expenses on a normalized test year basis.
In determining whether a Regulatory Proceeding Expense is reasonable, the Commission may use the following criteria:
Utilities may recover reasonable Regulatory Proceeding Expenses in accordance with the following formula, which shall include an adjustment for inflation.
RR-RPE = (ARPE - RCE) ÷· 5 + NRCE
Where
RR-RPE = Revenue Requirement Regulatory Proceeding Expenses
ARPE = Annual Regulatory Proceeding Expenses for the previous 5 years
RCE = Rate Case Expenses for the previous 5 years
NRCE = Normalized Rate Case Expenses
For the purposes of this section, the normalization period for Rate Case Expenses shall be ten years.
65-407 C.M.R. ch. 850, § 3