The Swiss association for energy efficiency (SAFE) collected street lighting energy consumption data for a large number of municipalities all over Switzerland. The data highlights wide differences among the different municipalities, depending on the type of measures for efficient street lighting implemented. Values ranged from 1.1 MWh/km yr to 50 MWh/km yr. The average is 11 MWh/km year and the 20th percentile (performance achieved by the 20% best performers) is 6 MWh/km year (SAFE, 2013).
Figure 8: Energy consumption for street lighting in 377 Swiss municipalities (SAFE, 2013)