With the threat of global warming, and credit crunch having your server running on 24/7 is probably not the best thing. So what can be done? The most obvious is to turn it off! By default WHS is set to back your PC’s up between midnight and 6am, which makes sense as most people won’t use their PC’s during this time.
The Electricity Running Costs Calculator can help work out how much it costs to run household appliances. Use the drop-down box to select an appliance or fill in the boxes on the shaded rows to do your own calculations.
You can change the values in the boxes on the shaded rows to reflect your personal usage. Click a colour bar to recalculate. For example, you can change the amount of time an appliance is used per month, or the watts for a light bulb.
More info: Electricity Running Costs Calculator