(a) The commission shall direct the independent organization certified under Section 39.151 for the ERCOT power region to:
(1) identify each region in which transmission capacity is insufficient to meet the region's existing and forecasted electrical load, as reasonably determined by the certificated transmission service provider; and
(2) develop a reliability plan to serve existing and forecasted electrical load in the identified region.
(b) The commission shall develop a plan to implement each reliability plan adopted under Subsection (a) to ensure timely development and approval of necessary transmission service improvements.