Access reliable and detailed data on electric power transmission lines in Clay County, Florida, tailored for GIS professionals. This dataset provides information on three overhead AC transmission lines, all of which are currently in service. Each feature includes data points such as voltage class, owner, and length of the transmission line. Particularly notable are lines owned by JEA and Florida Power & Light Co., with voltage ratings of 500 and 230 respectively. These entries are essential for professionals assessing power distribution infrastructure in regional mapping projects. The dataset also highlights the sources of the data, ensuring transparency and aiding in verification processes. For those engaged in utilities management or planning, this dataset offers valuable insights into Florida's electric power transmission networks.