How much does a coffee maker cost to run in Hawaii?
$7.22 a month
- A day of use
- $0.24
- An hour of running
- $0.47
- A year
- $86.59
900 W, 30 minutes a day, including the warming plate, at Hawaii’s average rate of 52.7¢ per kWh (EIA, June 2026). How we calculate this
Change the watts, hours or rate
What it costs at other usage levels
| Use | A day | A month | A year |
|---|---|---|---|
| 30 minutes a day typical | $0.24 | $7.22 | $86.59 |
| 1 hour a day | $0.47 | $14.43 | $173.19 |
| 2 hours a day | $0.95 | $28.86 | $346.37 |
| 4 hours a day | $1.90 | $57.73 | $692.74 |
| 8 hours a day | $3.80 | $115.46 | $1,385.48 |
| 24 hours a day | $11.39 | $346.37 | $4,156.44 |
Models range from 600 W to 1,200 W (Virginia Cooperative Extension). We use 900 W, the middle of that range.
Hawaii compared with other states
Hawaii’s residential rate is the 1st most expensive of 51 states and DC, 34.4¢ above the US average of 18.3¢ (+187%). Hawaii’s rate is up 11.8¢ from June 2025 (41.0¢, +28.7%).
Ways to spend less
- Pour the coffee into a thermal carafe and switch the warming plate off. Saves about $4.33 a month.
- Brew only what you will drink.
- Descale it so it heats water faster.
Questions
How much does it cost to run a coffee maker per hour?
About $0.47 an hour in Hawaii. A coffee maker at 900 W uses 0.900 kWh per hour, and at Hawaii’s average of 52.7¢ per kWh that comes to $0.47.
How much does a coffee maker add to your electric bill?
Used 30 minutes a day, including the warming plate, about $7.22 a month in Hawaii, or $86.59 a year.
How much does it cost to run a coffee maker 24 hours a day?
Running nonstop, a coffee maker would use 21.6 kWh a day and cost $11.39 a day, or $346.37 over an average month in Hawaii.
How many watts does a coffee maker use?
Models range from 600 W to 1,200 W (Virginia Cooperative Extension). We use 900 W, the middle of that range. Check the label on yours: cost scales directly with watts, so a 20% lower wattage means a 20% lower bill.
Why does a coffee maker cost more or less to run in Hawaii than elsewhere?
Hawaii’s residential rate is the 1st most expensive of 51 states and DC, 34.4¢ above the US average of 18.3¢ (+187%). Hawaii’s rate is up 11.8¢ from June 2025 (41.0¢, +28.7%). The appliance uses the same energy everywhere; only the price per kWh changes.
Sources
- Virginia Cooperative Extension: Estimating appliance and home electronic energy use (reproduces U.S. Department of Energy sample wattages)
- Penn State EGEE 102: Typical range of power consumption (wattage)
- Southern California Edison: Appliance energy use
- U.S. Energy Information Administration, Electric Power Monthly, Table 5.6.A: average price of electricity to ultimate customers, residential, June 2026 Figures transcribed from republications of this table on September 26, 2026; pending direct verification from the EIA API.
- Carrier page: June 2026 residential average price, citing EIA Electric Power Monthly Table 5.6.A
Usage assumptions (hours a day, season) are ours and listed on the methodology page. Found an error? Tell us.