Coffee maker
How much electricity does a coffee maker use?
600–1,200 W brewing · warming plate is the real cost · $2–$8 per month
A drip coffee maker heats water with an element of 600–1,200 W. Brewing a full pot takes 4–6 minutes, so the actual brewing energy is only about 0.1 kWh — roughly 1.5 cents.
The warming plate problem
Most drip machines keep a hot plate at 70–80°C for as long as they are switched on, drawing 40–100 W continuously. Two hours on the plate is about 0.15 kWh — more than the brew. Four hours doubles it, and the coffee is undrinkable anyway.
Switching to a thermal carafe removes the plate entirely. If you are buying a machine, this is the most consequential difference between models, more than any brewing temperature feature.
Kettle vs coffee maker
An electric kettle is more efficient at heating water (the element sits inside the water, less heat escapes) but makes one cup at a time. A drip machine making six cups uses less total energy than six kettle boils, because the boiler is insulated and the pot is not repeatedly reheated.
Espresso machines
An espresso machine's boiler sits at pressure all day if left on, drawing 500–1,300 W when it cycles. A machine left on from morning to evening can use 1.5–3 kWh — enough to change a monthly bill. Turn it off between uses or use a smart plug with a timer.
Frequently asked questions
How many watts does a coffee maker use?
600–1,200 W brewing. The figure on the rating label is the maximum draw; actual use varies with settings, age and usage pattern.
How much does it cost to run a coffee maker per month?
With the defaults above it comes to the monthly figure shown in the calculator. At 16.5¢/kWh — the US residential average — that is a realistic middle estimate. Your own bill may be 30% lower or higher depending on state.
Is it cheaper to run a coffee maker at night?
Only if your utility offers a time-of-use plan and you avoid the 4pm–9pm peak window. On a flat-rate plan, the time of day makes no difference to the total.
Does the calculator account for real-world duty cycles?
Not automatically — you enter the effective hours yourself. For compressing appliances like refrigerators and AC units, enter the running watts and roughly the proportion of time the compressor is on, which is usually 30–50%.
Will a newer coffee maker actually save money?
Compare the kWh figure in the calculator against an Energy Star model's stated annual use. If the difference is a few hundred kWh a year, the payback on a replacement is usually long; if it is over 500 kWh, it is worth pricing out.