2ES5 "Skif" is a fifth-generation mainline AC 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. The unification of components and elements with the main project - the two-system passenger electric locomotive EP20 is planned at the level of 75%. A total of five electric locomotives were produced, all of them, as of 2018, are in operation on the North Caucasus Railway.