Energy costs in Hawaii (HI)
Every figure we hold for Hawaii, on one page. Each links to the working behind it.
A cooling state
Hawaii runs about 3,600 cooling degree days against 0 heating ones, so the air conditioner does most of the work and is where efficiency money earns its keep. Its electricity bill peaks in July.
Electricity
48.00¢
per kWh
Gas $6.34/therm ›
Typical bill
$224
a month
Peaks at $262 ›
Air conditioning
$1958
a year
$1.21 an hour ›
Heating
$0
a season
Gas furnace is cheaper ›
Solar payback
2.5 yrs
on a 6 kW system
Generates at 5.1¢/kWh ›
Cities in Hawaii
Prices are the same statewide, but solar production is not — each city page models it at that city's own coordinates.
Common questions
How much does energy cost in Hawaii?
Electricity is 48.00¢ per kilowatt hour and natural gas $6.34 per therm. A typical household pays about $224 a month for electricity.
Does Hawaii spend more on heating or cooling?
Cooling. Hawaii runs about 3,600 cooling degree days against 0 heating ones, so summer sets the bill and efficiency spending is best aimed at the air conditioner.
For your own home
Everything above describes a 1,800 square foot home at Hawaii average prices. The calculators take your ZIP code and your own numbers.
Open the calculatorsPrices from the US Energy Information Administration, 2026-07. Solar production modelled by NREL. Heating and cooling loads estimated from Hawaii's degree days. Estimates, not quotes.