Relating to a reliability plan for electric transmission service in the Permian Basin.

SB 391 requires Texas' utility commission to direct an independent organization to develop and regularly update a reliability plan specifically for electric transmission service in the Permian Basin region. This plan must be created by a designated entity overseeing the ERCOT power region and refreshed every five years. The bill directly affects electric utilities and grid operators in the Permian Basin by mandating a formal process to ensure reliable power transmission. It amends existing law to focus on this specific region's infrastructure needs, with the plan taking effect in 2025.