Texas Utilities Code - UTIL § 53.056. Depreciation, Amortization, and Depletion

(a) The commission shall establish proper and adequate rates and methods of depreciation, amortization, or depletion for each class of property of a public utility.

(b) On application of a utility, the commission shall establish depreciation rates that promote the use of new technology and infrastructure.  In establishing rates under this subsection, the commission shall consider depreciation practices of nonregulated telecommunications providers.

(c) The rates and methods established under this section and the depreciation account required by Section 52.252 shall be used uniformly and consistently throughout rate-setting and appeal proceedings.

(d) Notwithstanding this section, a company electing under Chapter 58 may determine its own depreciation rates and amortizations.  The company shall notify the commission of any change in those rates or amortizations.