1. 1 Overview of Stanton Division and SPS Lines’ Purchase June, 2013

2. 2 Stanton Division System Overview SPS Borden - Jones 345/230kV Line … … ~ 90 miles SPP ERCOT

3. 3 Map of the Sharyland Loop Prior to Docket 39070 SPS Midland SPS Borden County To SPS Hobbs Substation To SPS Grassland Substation SPS Substation SPS Transmission ERCOT Transmission KEY SDTS Substation SDTS Transmission W STANTON

4. 4 SPS Midland SPS Borden County DRIVER SDTS / LCRA SKYWEST BARBER LAKE (Oncor) EILAND To SPS Hobbs Substation To SPS Grassland Substation ERCOT SPP Configuration Per the Agreed Transfer Option in Docket 39070 SPS Substation SPS Transmission Non-SDTS ERCOT Substation Non-SDTS ERCOT Line KEY SDTS ERCOT Substation SDTS ERCOT Transmission SDTS SPP Transmission Substation Disconnected from SPP 195 6 W STANTON SDTS New SPP Transmission Distribution Service from ERCOT System

5. 5 MIDLAND BORDEN COUNTY DRIVER SDTS / LCRA SKYWEST BARBER LAKE (Oncor) EILAND Configuration if the Proposed Transaction Closes Agreement Non-SDTS ERCOT Substation Non-SDTS ERCOT Line KEY SDTS ERCOT Substation SDTS ERCOT Transmission To a point on the Texas side of the Texas – New Mexico border between the Midland Substation and SPS’ Hobbs Substation To a point 10.2 miles south of SPS’ Grassland Substation ERCOT 195 6 W STANTON