SNCF Class Z 22500 "Eole" is a type of double-decker, dual-voltage electric multiple units operated on the French RER E line, and originally on the Paris Saint-Lazare network. These trains have been built by GEC Alstom and ANF. The Z 22500 is also known as the SNCF version of the MI 2N. SNCF Class Z 22500 looks very similar to RATP Altéo trains, but many differences exist between these models, such as motorization and design of inner spaces.