@feld @lain @Datenegassie
Anyway, a Mac mini consumes about 1 watt of power in sleep mode. Not so much.
Edit: The question is whether we can afford to waste energy? In Germany, an average household consumes around ca. 360 kWh a year just for standby appliances.
But I have to admit that I almost always switch my notebook to sleep mode too. @nikitonsky