What is the consumption of the HUB-50/100 when idle?

The HUB-50/100 uses around 1.5 W when in idle status (lighting is switched off). Sample calculation: If the lighting is switched on for 3 hours a day, the transformer will be in idle status for 21 hours a day. This corresponds to 12 kW per year. With an energy price of €0.25/kWh, the total annual energy cost will be €3.