Cost to run appliances in Hawaii
Updated August 2026 · average residential rates
Quick answer: Hawaii pays 42.1¢/kWh on average — 149% above the US average, #51 cheapest of 51. A space heater costs about $115/month here (6 h/day); every other appliance is in the table below at local rates.
Run your own numbers
typically 750–1,500 W (most run at 1,500 W on high) · default assumes 6 hours/day on high during cold months
63.2¢
per hour running
$3.79
per day
$115
per month
$1383
per year
Uses about 9.0 kWh/day at 42.1¢/kWh (Hawaii). National average would be $46.24/month.