Mapping out the network of electric power transmission lines in Guadalupe County, Texas, becomes straightforward with our comprehensive dataset featuring details on approximately eight overhead, alternating current (AC) lines. These lines, crucial for the bulk transmission and control of electricity, are accurately mapped out, sourcing data from imagery and validated as of 2017-2018. Our dataset includes lines owned by various entities including AEP Texas Central Company, Bluebonnet Electric Coop, and Pedernales Electric Coop, indicating lines that are actively in service. Each entry details the voltage level, typically classified at 345 volts, and spans between substations like Elm Creek and San Miguel, among others. This data is vital for professionals engaged in infrastructure development, maintenance, and planning in the electric power sector.