The SNCF Class BB 27000 "Prima" electric locomotives were built by Alstom between 2001–2005. These are dual-voltage freight-only locomotives; they are not fitted with a 1500 V DC electrical line for train heating and accessories. One hundred and eighty of the locomotives, numbered 27001–27180, were built for Fret SNCF, for use on freight traffic. Their introduction led to the withdrawal of several elderly electric types, including Classes , CC 7100, BB 8100 and BB 12000. They have also made significant inroads into Classes CC 6500, BB 8500, BB 16500 and BB 25500.