The power consumption regulation (actually giving it a grade) for vacuum cleaners is just continuation of what EU has been doing with a lot of other household a

The power consumption regulation (actually giving it a grade) for vacuum cleaners is just continuation of what EU has been doing with a lot of other household appliances like dishwashers/fridges/etc. Basically once you mandate a easy to understand energy consumption rating system to some type of product people do start to care about it. Especially if you mandate that this score has to be visible on the packaging and all advertising material.