My rule was something like 2Eur /10W/Month(~2A 5V Raspi) which comes down to 2,4Eur/W/Y.
Just for my curiosity though, Where did your 1Eur come from? The prices were >20ct for 10 years now. Or do you calculate without taxes and stuff?
Just for my curiosity though, Where did your 1Eur come from? The prices were >20ct for 10 years now. Or do you calculate without taxes and stuff?