The average coffee maker uses 800 watts to produce 4 cups of coffee in 10 minutes. It uses 300 to 600 watts to produce 2 cups of coffee and about 1,000 to 1,500 watts for 8 to 10 cups of coffee.
If the coffee pot runs for about 20 minutes, it uses about 10 cents worth of energy. At that rate, the cost per month is 80 cents, with the annual cost running at about $9.64. When the coffee maker is not brewing, the machine uses about 1 watt of power per hour. It is possible to save energy by making larger pots and then keeping the brewed coffee in a thermos instead of making single cups.