Armstrong County, Texas offers a dynamic dataset for professionals engaged in electrical engineering and GIS mapping, focused on US Electric Power Transmission Lines. This dataset provides details on two transmission lines including types, voltage classes, and operational status. Both categorized as "AC; OVERHEAD" and "IN SERVICE," these lines have different voltage specifications—345kV and less than 100kV, respectively—sourced primarily through imagery. The featured lines connect different substations, with one owned by Southwestern Public Service Co, offering a granular view crucial for infrastructural planning and analysis in the energy sector.