Transmission of Electrical Energy: Overhead Lines takes a computational approach through the use of the Alternative Transient Program (ATPdraw), which is a program of worldwide use. The number of exercises solved, including computer simulations with ATPdraw and source codes in MATLAB (R) make the work didactic and easy to assimilate, even for those readers new to the subject. The subjects presented throughout the text aims to make the reader understand and gain sufficient knowledge to analyze the operation of overhead transmission lines in a steady-state and in a transient state, besides carrying out an introductory project of a steady-state transmission line. The book can be used in both undergraduate and graduate courses in electrical engineering.