Access detailed information on electric power transmission lines in Knox County, Illinois, with our specialized dataset tailored for GIS professionals. This dataset currently holds three overhead AC transmission lines marked as "in service". Each entry details key attributes such as voltage level, ownership, and the specific substations connected, such as Fargo 345 kV, Sandburg, and Galesburg Monmouth Boulevard. Voltage classes within the dataset range from 100-161 to 345, providing a broad spectrum of data crucial for mapping and planning purposes in utility management and development sectors. This high-quality dataset is grounded on thorough imagery-based validation methods ensuring data accuracy and reliability.