Sec. 163.011. EFFECT OF SUBCHAPTER. This subchapter does not affect: (1) the statutory purposes prescribed by state law relating to creating, establishing, or operating an entity that co-owns a facility; (2) an entity's rights or powers in effect on August 27, 1973, relating to the generation, transmission, distribution, or sale of electric power and energy; or (3) a contract in effect on August 27, 1973. Acts 1997, 75th Leg., ch. 166, Sec. 1, eff. Sept. 1, 1997.