My house used 2000 Kilowatt Hours (KWH) last month. A quick glance at my last few electricity bills shows that's a little high but not out of line. The power company charges me about 8.7 cents per KWH. So let's take a look at how many watts are used by some different computer things in my house.
By knowing how many watts a device is drawing, I think you can calculate the dollar amount per month like so:
Watts x <24> x <30> / <1000> x $0.087.
Or to make it short
Dollars per month = Watts x 0.0626
So with that simple calculation let's look at these values I recorded. Not all of these are on 24 hours a day though.Old Linux Server (34) Watts = $2.13 per month Old Computer Speakers (8 Watts) = $0.50 per month 2 x 42" Plasma Television (2x300 Watts) = $37.60 per month
10 lightbulbs at 50 Watts = (500 Watts) = $31.30 per month