The final part of the network to be electrified will be between Trilport and La Ferté-Milon on Line P. Electrification work between Gretz and Provins, also on Line P, will be completed by the end of 2022. Following these two projects the Île-de-France rail network will be fully electrified.
The commuter rail network, which goes under the brand name Transilien and serves Île-de-France, the surrounding region, and the city of Paris, consists of eight lines: H, J, K, L, N, U, P and R, each operated by SNCF, the state-owned railway of France.
According to Île-de-France Mobilités, once the whole of Line P has been electrified, all routes will be able to serve the Francilien modern commuter train.
To electrify the last section of the railway network (Trilport to La Ferté-Milon) more than 60km of catenaries will be deployed alongside 1,500 catenary supports. Electrified power stations will also need to be created to control high voltage devices located on catenary poles.
The electrification work is likely to take around eight to nine months, according to Île-de-France Mobilités.