Based on the current 2013 summer electric rate schedule from Pacific Gas and Electric Company to commercial customers in the State of California, USA, of ~21¢/kWh (United States Cents per kiloWatt-hour), saving a total of 13 Watts system power reduces the operating costs of the server under full load 24 hours a day from US$ 33.26 per month (5.28 kWh per day*30 days*21¢) to US$ 31.30 per month (4.968 kWh per day*30 days*21¢), a 6-percent cost saving per month per server!