The Electric Reliability Council of Texas (ERCOT) has determined a need for several transmission projects in the western region of the American Electric Power Texas Central Company (AEP TCC) to relieve the overload and under-voltage problems of the transmission system. In the AEP TCC Western Region border area, including the towns of Del Rio, Eagle Pass, and Laredo, the area is experiencing approximately five percent annual load growth. The remaining Western Region is experiencing approximately two percent annual load growth.

One transmission project recommended by ERCOT to increase reliability in the region is the construction of a new 138 kV transmission line from the AEP TCC Uvalde substation to the CPS Energy system (either the Castroville substation or the Texas Research substation).