Marcel Deprez (December 12, 1843 - October 13, 1918) was a French electrical engineer. He was born in Chatillon-sur-Loing. He died in Vincennes.
Marcel Deprez, at Creil, in 1876 to 1886, conducted the first experiments to transmit electrical power over long distances. At the Paris exhibition in 1881, Marcel Deprez undertook the task of presenting a distribution system based on the long-distance transport of direct current.
Deprez conducted experiments in La Chapelle, Grenoble, Vizille, Paris, and Creil. Deprez eventually attained transmission that were over thirty-five miles for industrial purposes.
