ng wrote:Did some math and the machine uses about 5 kWh a day. Depending on my rate that's about $1.2-1.50 a day, or about $45 a month. My machine is fully powered from 8:00-1030 and 11:00-13:30 during the week with a slightly different schedule on the weekend. Seemed like a waste of power.
Your rates a quite a bit higher than ours. Currently (no pun intended) we're paying about $0.15 per kWh, not including a monthly "customer charge" of about $14.50. We used to pay a lot more, something like $0.28 per kWh, but when natural gas prices fell our rates went way down.
I programmed my machine to turn on about 30 minutes before I wake up and turn of two hours later. But usually I'm at the machine shortly after it's fully warmed up, make a few drinks, then turn it off. It's probably on for an average of 1-1.5 hours a day. I have an energy monitor that's connected to every circuit in the house, and it says today the espresso machine/grinder outlet use a little over 1 kWh. However, our Technivorm drip coffee maker is on the same circuit, so the espresso machine/grinder consumption is less than that.
Also, during the day our solar tracker provides all the power the house needs and then some, even on many cloudy (but not stormy) days.