1. (1) A deferred account balance debit shall be calculated using the following formula:

   If   AAFC is ≥ (AAFCF x (1+FCT))

   Then   DABD = WJR x [AAFC – (AAFCF x (1 + FCT))]

   Where   DABD =   Deferred account balance debit.

   WJR =   Wisconsin jurisdictional share of the
   annual native system requirement.

   AAFC =   Average annual fuel cost.

   AAFCF =   Forecast of the average annual fuel cost
   in the approved fuel cost plan.

   FCT =   Fuel cost tolerance.

2. (2) A deferred account balance credit shall be calculated using the following formula:

   If   AAFC is < (AAFCF x (1-FCT))

   Then   DABC = WJR x [(AAFCF x (1 – FCT)) – AAFC]

   Where   DABC =   Deferred account balance credit.

   WJR =   Wisconsin jurisdictional share of the
   annual native system requirement.

   AAFC =   Average annual fuel cost.

   AAFCF =   Forecast of the average annual fuel cost
   in the approved fuel cost plan.

   FCT =   Fuel cost tolerance.

3. (3) A utility’s fuel cost tolerance shall be set at plus or minus two percent, unless the commission sets a different percentage when approving a fuel cost plan under s. PSC 116.03 (3).

History

History: CR 08-070: cr. Register February 2011 No. 662, eff. 3-1-11.