Last month saw the opening of the upgraded 700 bar hydrogen filling station in Berlin with the filling of the fuel cell car Hydro-Gen4 by GM/Opel. For the first time at a public station an infrared interface was used for data communication between filling station and vehicle. Ramping up the station to 700 bar was done by the Linde Group: the basic plant on the ground of the public bus depot Heerstrasse has been there for a while already; it comprises a cooling system (Ultra Low Cold Fill) for precooling of the hydrogen to shorten the filling time. The station can fill up vehicles with 5 kg hydrogen gas in three minutes. More info at