T HE PRESENT study illustrates a new application of nanotechnology in electrical power transmission involving the coating the transmission lines of type ACSR with a nano layer of copper to minimize the resistance of the transmission and so minimize the transmitted power losses. The substrate used in the present investigation is made of aluminium of purity  99.9 %. The coating process is done by Hybrid Physical Vapor Decomposition using magnetron sputtering technique. The experimental testing has shown that the resistance of the coated substrates is reduced and the obtained results have proven the desired goal of power loss reduction in transmission lines.