Access comprehensive data on Electric Power Transmission Lines within Macoupin County, Illinois. Our dataset presents detailed information suitable for GIS professionals engaged in infrastructure and energy projects. Each feature is meticulously categorized and includes properties such as type, status, ownership, and source verification method and date. Notable entries include transmission lines from Roxford to Coffeen and data sourced from diverse platforms such as OpenStreetMap and MISO energy databases. This dataset aids in effective planning and analysis in the domain of electric bulk power transmission and control, emphasizing up-to-date information from as recent as 2020.