2ES5 "Skif" is a fifth-generation AC mainline freight electric locomotive developed jointly by Transmashholding CJSC and the French company Alstom for Russian Railways OJSC. The locomotive was created as one of the elements of a new family of Russian electric locomotives built on the principle of a single base platform. Unification of nodes and elements with the main project - a two-system passenger electric locomotive EP20 is planned at the level of 75%. In total, five electric locomotives were produced, all of which, as of 2018, are operated on the North Caucasian Railway.