The six-lot contract covers the replacement of 250,000 lights at 302 Metro and 66 RER stations over the next four years. RATP says the completion of this work will make the Paris metro the first existing transport network with stations illuminated entirely by LED light sources.

Since August 2009 RATP has carried out a number of trials with LED lighting, including the replacement of all lighting at Censier-Daubenton station on Metro Line 7 in early 2010.