How Much Will PC Power Management Save Me?Powering down PCs to standby mode while not in use can save $40 - $60 per PC per year.
How Much Does Powering PCs Cost?
Electricity for powering a PC consuming 810KWh a year costs around $82 in the US, and nears €100 in Europe. 
How Much can I Save?
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Electricity prices vary between countries. The average US commercial sector price is 10.17 cents per KWh, while the European Union average is around 12 Euro cents per KWh.
Using sleep mode (standby) during periods of user inactivity brings daily electricity consumption down from over 15 KWh per PC to less than 5 KWh, appraoching a 70% reduction in energy consumption! This energy reduction translates into savings of up to $60 per PC per year in the US, or €70 in the EU. 
