The National Federation of Energy (, FNE-CGT) was a trade union representing workers in the energy industry, in France.

The union was founded in 1905 as the National Federation of Lighting Workers, affiliated to the General Confederation of Labour (CGT), and mostly represented gas workers. In 1919, it was joined by various unions representing electrical workers, which had previously been part of the National Federation of Metalworkers, and was renamed the National Federation of Lighting and Motive Force Workers'. Following lengthy debates, the union decided not to affiliate to the Red Trade Union International.

The union split in 1939 into legal and underground wings, with the underground wing soon becoming the larger. The legal wing was largely supportive of the Vichy government until 1943, enabling a reunification in September 1944, largely on the terms of the underground wing. In 1946, the union played an important role in the campaign for the nationalisation of the electricity and gas industries. In 1947, the right wing of the union split away, to form the National Federation of Trade Unions of the Electric and Gas Industries.

In 1989, the National Union of Atomic Energy Trade Unions joined the union. In 1999, it merged with the National Federation of Miners, forming the National Federation of Mines and Energy.La Nouvelle Vie ouvrière, N° 2879, 29 octobre 1999

General secretaries 1905: Maurice Claverie 1906: Unknown 1919: E. Jacquot 1921: Charles Biot 1936: Charles Biot and Raoul Lèbre 1936: Lucien Barthes 1937: Marcel Paul 1941: Émile Pasquier 1942: Fernand Gambier 1946: Émile Pasquier 1956: Marcel Paul 1963: Roger Pauwels 1979: François Duteil 1989: Denis Cohen

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