As a rule of thumb one Watt standby equals 9KWh per year. If you have expensive electricity like we do in Germany with 35 Cent per kWh, this is roughly 3 Euro p

As a rule of thumb one Watt standby equals 9KWh per year. If you have expensive electricity like we do in Germany with 35 Cent per kWh, this is roughly 3 Euro per year. 10 Watt standby does not sound unplausible I found that my subwoofer of a very well known brand consumes about 6 Watts in standby, and our old Roomba is very hungry when on standby, too. Get a device to measure power consumtion for a 15 Euros/Dollars, find the energy hogs, and give the device to friends and relatives. This will not save the world, but you WILL find some pontential for saving energy.