Access detailed datasets tailored for GIS professionals focused on US Electric Power Transmission Lines in Tompkins County, New York. This dataset, featuring three transmission lines, includes vital attributes such as type, ownership, and service status. Each line entry is clearly marked whether it is overhead AC type, along with the power voltage classes varying from under 100 to 161 volts. Key infrastructure details are further illustrated by the source of information coming predominantly from imagery and OpenStreetMap data as of 2015 and 2017. This dataset helps streamline the integration and analysis of power transmission data for enhanced operational planning and infrastructure development in the region.