Heating · Hawaii
How Much Does It Cost to Run an Electric Baseboard Heater in Hawaii?
The short answer
Running a 1,500W electric baseboard heater in Hawaii costs about $0.72 an hour. At 8 hours a day, that’s roughly $175 a month and $2,102 a year.
That’s based on Hawaii’s average residential rate of 48.0¢/kWh (EIA, July 2026), 162% above the US average.
Source: U.S. EIA, July 2026 data · Updated
Electric Baseboard Heater cost by daily use in Hawaii
| Daily use | kWh/month | Per day | Per month | Per year |
|---|---|---|---|---|
| 1 hour/day | 45.6 | $0.72 | $21.90 | $263 |
| 2 hours/day | 91.3 | $1.44 | $43.80 | $526 |
| 4 hours/day | 182.5 | $2.88 | $87.61 | $1,051 |
| 8 hours/day | 365.0 | $5.76 | $175 | $2,102 |
| 12 hours/day | 547.6 | $8.64 | $263 | $3,154 |
| 24 hours/day | 1,095.1 | $17.28 | $526 | $6,307 |
Hawaii vs other states
Hawaii has the most expensive electricity in the country, so running an electric baseboard heater here costs $1,545 more a year than in Louisiana at the same usage.
Hawaii has the most expensive residential electricity of the 50 states and DC. Hawaii price per kWh · all states ranked
Electricity price trend in Hawaii
48.0¢/kWh in July 2026 — ▲ +22.0% from a year earlier.
How to lower the cost of running an electric baseboard heater
Baseboard heaters are wall-mounted resistance heaters wired into a 240V circuit. Like space heaters, they convert electricity to heat at about 100%, and size determines cost: roughly 250 watts per linear foot. A home heated entirely by baseboards may have several units per room, so multiply by the number of units running. Enter the hours per day the heater is actually on — line-voltage thermostats cycle them on and off to hold the set temperature.
- Install programmable line-voltage thermostats to lower temperatures when rooms are empty.
- Keep furniture and curtains at least 6 inches away so heat can circulate.
- Heating a whole home with baseboards? A ductless mini-split heat pump can cut heating costs by half or more.
- Heating seasons in Hawaii are short, so most households only run a electric baseboard heater for a few weeks a year.
Questions
Frequently asked questions
How much does it cost to run an electric baseboard heater for 24 hours in Hawaii?
Running a 1,500W electric baseboard heater for 24 hours uses about 36.0 kWh, which costs about $17.28 at Hawaii’s average rate of 48.0¢/kWh.
How many kWh does an electric baseboard heater use per month?
At 8 hours a day, a typical electric baseboard heater uses about 365 kWh a month. In Hawaii that costs $175.
Is it expensive to run an electric baseboard heater in Hawaii?
Hawaii has the most expensive residential electricity of the 50 states and DC at 48.0¢/kWh — one of the most expensive. Running an electric baseboard heater here costs about $2,102 a year at typical use, compared with $802 at the national average rate.
What is the electricity rate in Hawaii right now?
The average residential electricity rate in Hawaii was 48.0¢ per kWh in July 2026, according to the latest EIA data — up 22.0% from a year earlier.
How many watts does a baseboard heater use per foot?
About 250 watts per linear foot, so a 4-foot heater is about 1,000W and an 8-foot heater about 2,000W.
Electric Baseboard Heater costs in nearby states
Other appliances in Hawaii
Cheapest and priciest states
Comparisons
Sources & method
- Electricity rates: U.S. Energy Information Administration, Electric Power Monthly — average residential retail price, July 2026 (latest available). Retrieved .
- CO₂: EIA State Electricity Profiles, 2024 emissions rate of in-state power generation.
- Default usage for electric baseboard heater: 8 hours a day. Typical power 1,500W.
- Formulas, duty cycles and limitations: methodology. Data download: open data (CC BY 4.0).