Rule of thumb: for each watt your always on device consumes, you will pay $1/year in electricity. (at $0.12/kwHr, common US price) You folks in Silicon Valley

Rule of thumb: for each watt your always on device consumes, you will pay $1/year in electricity. (at $0.12/kwHr, common US price) You folks in Silicon Valley are paying 50% more than that for your electricity, so adjust accordingly. His savings are high, $233/year which says to me he saved 150 watts, which seems a touch on the high side, but if his Pavilion did not sleep well (common in PCs) and his Mini does it would be right on the button.