26 CFR 1.167(l)-4: (l)-4 Public utility property; election to use asset depreciation range system.

(a) Application of section 167(l) to certain property subject to asset depreciation range system. If the taxpayer elects to compute depreciation under the asset depreciation range system described in § 1.167(a)-11 with respect to certain public utility property placed in service after December 31, 1970, see § 1.167(a)-11(b) (6).