The financing of the measure results from the consequent energy saving. As an advantage as compared with a normal reduction of the output of luminaires in night-time operation the city hopes for several benefits . On the one hand, it is expected that the company executing the work will contribute its specialist competence in technology and economic efficiency to the solution and in that way provide additional stimuli also for the City of Bottrop's own solutions. Moreover the operation of the LED street luminaires is to be carried out oriented to the volume of users.