Hawaii Utility Cost Calculator
Hawaii utilities: about $659 a month for a typical home (electric ~$238, gas ~$217, water ~$74, internet ~$130) at EIA's 48¢/kWh. Try your own numbers.
Typical total monthly utility bill in Hawaii: $659 for a 1,800 sq ft home with 3 occupants -- $238 electricity, $217 natural gas, $74 water/sewer, and $130 internet under this page's default assumptions. Change the inputs below, or compare states with the utility bill estimator.
| Measure | Hawaii | Rank, normal or source |
|---|---|---|
| Electricity price, July 2026 | 48¢ per kWh (July 2025 39.36¢, +22.0%) | highest of 50; 162% above U.S. |
| Use per home, 2024 | 495 kWh a month | lowest of 50; 43% below U.S. |
| Electric bill | 495 kWh × 48¢ = $237.60, about $238 | 2024: $212.12 at 42.86¢, highest of 50 |
| Natural gas, 2025 average | $52.38 per Mcf (about $5.05 per therm) | highest of 44 (2025 averages); July 2026 $65.72, not used |
| Heating degree days, Jul 2025–Jun 2026 | 0 | normal 0 |
| Cooling degree days, same months | 4,783 | normal 4,302, 11% above |
| Home energy, 2024 | electricity 57.6%, small-scale solar 35.6%, natural gas 3.6%, heating oil and propane 3% | EIA SEDS, at the meter |
| In-state generation, 2024 | petroleum 77%, solar 7.7%, wind 7.2% | EIA-923 |
| Largest residential sellers, 2024 | Hawaiian Electric Co Inc (investor-owned) 56.8%; Hawaii Electric Light Co Inc (investor-owned) 16.1% | EIA-861 |
EIA (EPM 5.6.A, EIA-861, gas annual prices at 10.37 therms per Mcf) read 2026-10-11; NOAA CPC, EIA SEDS and EIA-923 2026-10-13.
Estimate only — these are not official figures
EIA use and prices for Hawaii; home-size scaling, gas use, water and internet modeled
Do not rely on these amounts for budgeting or payment. For exact amounts, check the residential rate of Hawaiian Electric Co Inc or your own utility.
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Pre-filled: EIA Electric Power Monthly, Table 5.6.A (Residential, July 2026)
Pre-filled: EIA residential natural gas price, 2025 annual average ($52.38/Mcf)
Additional Details
Pre-filled: C2ER Cost of Living Index (via MERIC)
Monthly Electric Bill
Estimated • Based on your inputs
Total Monthly Utilities
$659.00
Annual Utility Costs
$7,908.00
Detailed Breakdown
Disclaimer: This calculator provides estimates for informational purposes only. Results should not be considered financial, tax, or legal advice. Consult a qualified professional for your specific situation.
How This Calculator Works
Calculation methodology and assumptions
Hawaii inputs: 495 kWh a month (EIA-861 2024) × 48¢ (EIA, July 2026), scaled to your home size and occupants; gas $52.38/Mcf ÷ 10.37 = $5.0511/therm (EIA 2025 annual average); water $10.22 per 1,000 gallons and internet $130/month, both from cost-of-living index 185.8; income share on $100,745.
Key State Information
446,512 Hawaii residential electricity customers (EIA-861, 2024) · cost-of-living index 185.8 · median household income $100,745.
What drives Hawaii utility bills
Hawaii logged no heating degree days from July 2025 to June 2026 and 4,783 cooling degree days, peaking in Aug 2025: cooling is the whole weather load.
Electricity supplied 57.6% of Hawaii home energy in 2024, small-scale solar 35.6%. With gas at 3.6%, many homes have no gas bill; subtract the gas line if yours has no gas service. The kWh above are grid purchases, so a home with panels buys less.
Hawaiian Electric Co Inc sold 56.8% of Hawaii's 2024 residential electricity, Hawaii Electric Light Co Inc 16.1%.
| Month | Heating | Cooling |
|---|---|---|
| Jul 2025 | 0 | 504 |
| Aug 2025 | 0 | 530 |
| Sep 2025 | 0 | 505 |
| Oct 2025 | 0 | 482 |
| Nov 2025 | 0 | 390 |
| Dec 2025 | 0 | 344 |
| Jan 2026 | 0 | 292 |
| Feb 2026 | 0 | 239 |
| Mar 2026 | 0 | 313 |
| Apr 2026 | 0 | 336 |
| May 2026 | 0 | 406 |
| Jun 2026 | 0 | 442 |
StateCalc Team
Editorial Team
The StateCalc team builds free financial calculators using data from official government sources including the IRS, U.S. Census Bureau, BLS, and state revenue departments. All formulas are validated by an automated test suite and cross-referenced against published data.
Our editorial standardsFrequently Asked Questions
What is the average electric bill in Hawaii?
EIA 2024: $212.12 a month (495 kWh × 42.86¢). July 2026 price 48¢: $238.
National Data
The full 50-state dataset behind this calculator
Compare Hawaii With Other States
Side-by-side tax, housing & cost of living comparisons