WattCostCalc

How Much Does a 1,500-watt appliance Cost to Run in Hawaii?

A 1,500-watt appliance uses 1.5 kWh per hour and costs $0.63 per hour at $0.42/kWh in Hawaii. Over 4 hours a day that is $2.52 per day, $75.60 per month and $919.80 per year.

$0.63 per hourat $0.42/kWh

Calculate your own cost

Hours per day:
$2.52per day
Per hour
$0.631.5 kWh
Per day
$2.526 kWh
Per week
$17.6442 kWh
Per month (30 days)
$75.60180 kWh
Per year
$919.802,190 kWh

Formula: watts ÷ 1,000 × hours × rate. Edit any box and every number updates instantly.

People also ask

How much does a 1,500-watt appliance cost per hour?

At $0.42/kWh, it costs $0.63 per hour. The maths: 1,500 W ÷ 1,000 = 1.5 kWh per hour, × $0.42 = $0.63.

How much does it cost per month?

Used 4 hours a day for 30 days, it costs about $75.60 per month and uses 180 kWh. Change the hours in the calculator above to match how you use it.

How many kWh does it use?

6 kWh per day, 180 kWh per month and 2,190 kWh per year at 4 hours a day. A kWh is one kilowatt (1,000 W) used for one hour. It is the unit on your electricity bill.

How can I lower the cost?

Use it for fewer hours, switch to a lower-wattage model, and check whether your utility offers cheaper off-peak rates. Enter your own rate above to see the effect.

Does my electricity rate change the answer?

Yes, a lot. At 10¢ per kWh the monthly cost is $18.00 and at 30¢ it is $54.00. Find your rate on your bill (total cost ÷ kWh used) and type it into the calculator.

Cost by hours of use in Hawaii

Used per dayEnergy per dayCost per dayCost per monthCost per year
1 hour1.5 kWh$0.63$18.90$229.95
2 hours3 kWh$1.26$37.80$459.90
3 hours4.5 kWh$1.89$56.70$689.85
4 hours6 kWh$2.52$75.60$919.80
5 hours7.5 kWh$3.15$94.50$1,149.75
6 hours9 kWh$3.78$113.40$1,379.70
7 hours10.5 kWh$4.41$132.30$1,609.65
8 hours12 kWh$5.04$151.20$1,839.60
9 hours13.5 kWh$5.67$170.10$2,069.55
10 hours15 kWh$6.30$189.00$2,299.50
11 hours16.5 kWh$6.93$207.90$2,529.45
12 hours18 kWh$7.56$226.80$2,759.40
13 hours19.5 kWh$8.19$245.70$2,989.35
14 hours21 kWh$8.82$264.60$3,219.30
15 hours22.5 kWh$9.45$283.50$3,449.25
16 hours24 kWh$10.08$302.40$3,679.20
17 hours25.5 kWh$10.71$321.30$3,909.15
18 hours27 kWh$11.34$340.20$4,139.10
19 hours28.5 kWh$11.97$359.10$4,369.05
20 hours30 kWh$12.60$378.00$4,599.00
21 hours31.5 kWh$13.23$396.90$4,828.95
22 hours33 kWh$13.86$415.80$5,058.90
23 hours34.5 kWh$14.49$434.70$5,288.85
24 hours36 kWh$15.12$453.60$5,518.80

How we worked it out

  1. Energy per hour: 1,500 W ÷ 1,000 = 1.5 kWh
  2. Cost per hour: 1.5 kWh × $0.42 = $0.63
  3. Cost per day: × 4 hours = $2.52
  4. Month and year: × 30 days = $75.60, × 365 days = $919.80

Hawaii electricity prices

Hawaii pays about $0.42 per kWh, which is 140% higher than the US average of $0.175. The same appliance would cost $31.50 a month at the national average.

What it costs in different places

Same 1,500-watt appliance, 4 hours a day. Only the local electricity rate changes.

PlaceRate per kWhCost per month
United States$0.175$31.50
California$0.32$57.60
Texas$0.155$27.90
New York$0.25$45.00
Florida$0.155$27.90
Illinois$0.17$30.60
Pennsylvania$0.18$32.40
Ohio$0.17$30.60
Washington$0.115$20.70

What this estimate assumes

  • The appliance draws its full stated wattage the whole time it is on. Real units with a thermostat cycle off and cost less.
  • Wattage is the typical label value, not a measured value. Check the label on your own appliance.
  • The rate is an approximate residential average in Hawaii. Your bill may include fixed fees, tiers or time-of-use pricing. Edit the rate above.
  • A month is 30 days and a year is 365 days.

Read the full calculation methodology

Keep exploring

Other wattages

Appliances that use 1,500 watts

Cost for different run times

Cost in other places