Sec. 32.7410  Nonoperating investment tax credits--net.

    (a) This account shall be charged and Account 4330, Unamortized 
Nonoperating Investment Tax Credits--Net, shall be credited with 
investment tax credits generated from qualified expenditures related to 
other operations which the company has elected to defer rather than 
recognize currently in income.
    (b) This account shall be credited and Account 4330 shall be charged 
with the amortization of each year's investment tax credits included in 
such accounts relating to amortization of previously deferred investment 
tax credits of other property or regulated property, the amortization of 
which does not serve to reduce costs of service (but the unamortized 
balance does reduce rate base) for ratemaking purposes. Such 
amortization shall be determined with reference to the period of time 
used for computing book depreciation on the property with respect to 
which the tax credits relate.