Tex. Util. Code § 58.054
(b) The rates an electing company may charge on or before that fourth anniversary are the rates charged by the company on June 1, 1995, or, for a company that elects under this chapter after September 1, 1999, the rates charged on the date of its election, without regard to a proceeding pending under:
Acts 1997, 75th Leg., ch. 166, Sec. 1, eff. Sept. 1, 1997.
Amended by Acts 1999, 76th Leg., ch. 1212, Sec. 40, eff. Sept. 1, 1999.