Tex. Util. Code § 39.401

This subchapter shall apply to investor-owned electric utilities operating solely outside of ERCOT having fewer than six synchronous interconnections with voltage levels above 69 kilovolts systemwide on the effective date of this subchapter. The legislature finds that circumstances exist that require that areas served by such utilities be treated as competitive development areas in which it is not in the public interest to transition to full retail customer choice at this time.