Selection Criteria Office Luminaires
MethodologyTopten.eu presents the most energy efficient luminaires for offices and other indoor use. The listed luminaires are certified by MINERGIE®, a Swiss label most famously known for building standards. Each brand is represented with their most energy efficient model per category. The complete list of Minergie-certified luminaires can be found under www.toplicht.ch (website available in German).
Technical CriteriaThe standards for Minergie-certified luminaires apply (detailed description in German here). The most important criteria are:
Power in standby mode
Data sourcesProduct information from Minergie / www.toplicht.ch.
Order of presentation
Models are ranked according to their luminaire efficiency factor in lumens per watt (lm/W); the higher the value the better. The order of presentation can be changed by clicking the tables’ headings.
Brand with link to manufacturer website, name of model
Measured value for power in watts (W)
Only luminaires with LED light sources are accepted
Options for lighting control
Percentage of downward flux (%)
Luminaire efficiency factor
Ratio of the measured luminous flux of the luminaire (lumens) to the power (watts). The higher the value the better. The luminaire efficiency factor (lumens per watt, lm/W) corresponds to the product of the luminous efficacy of the light source (lm/W), the efficiency of the ballast (%) and the light output ratio of the luminaire (%).
Standards and labels