Idaho Utility Cost Calculator
Idaho utilities: about $271 a month for a typical home (electric ~$130, gas ~$32, water ~$39, internet ~$70) at EIA's 13.73¢/kWh. Try your own numbers.
Typical total monthly utility bill in Idaho: $271 for a 1,800 sq ft home with 3 occupants -- $130 electricity, $32 natural gas, $39 water/sewer, and $70 internet under this page's default assumptions. Change the inputs below, or compare states with the utility bill estimator.
| Measure | Idaho | Rank, normal or source |
|---|---|---|
| Electricity price, July 2026 | 13.73¢ per kWh (July 2025 12.28¢, +11.8%) | 45th highest of 50; 25% below U.S. |
| Use per home, 2024 | 944 kWh a month | 21st highest of 50; 9% above U.S. |
| Electric bill | 944 kWh × 13.73¢ = $129.61, about $130 | 2024: $108.73 at 11.52¢, 45th highest of 50 |
| Natural gas, 2025 average | $7.69 per Mcf (about $0.74 per therm) | 44th highest of 44 (2025 averages); July 2026 $13.29, not used |
| Heating degree days, Jul 2025–Jun 2026 | 5,814 | normal 6,908, 16% below |
| Cooling degree days, same months | 561 | normal 456, 23% above |
| Home energy, 2024 | natural gas 42.3%, electricity 41.5%, heating oil and propane 8.5%, wood 6.5%, small-scale solar 1% | EIA SEDS, at the meter |
| In-state generation, 2024 | hydroelectric 45.7%, natural gas 31.4%, wind 15.1% | EIA-923 |
| Largest residential sellers, 2024 | Idaho Power Co (investor-owned) 58.8%; Avista Corp (investor-owned) 13.8% | 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 Idaho; 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 Idaho Power Co 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 ($7.69/Mcf)
Additional Details
Pre-filled: C2ER Cost of Living Index (via MERIC)
Monthly Electric Bill
Estimated • Based on your inputs
Total Monthly Utilities
$271.00
Annual Utility Costs
$3,252.00
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
Idaho inputs: 944 kWh a month (EIA-861 2024) × 13.73¢ (EIA, July 2026), scaled to your home size and occupants; gas $7.69/Mcf ÷ 10.37 = $0.7416/therm (EIA 2025 annual average); water $5.47 per 1,000 gallons and internet $70/month, both from cost-of-living index 99.4; income share on $81,166.
Key State Information
868,141 Idaho residential electricity customers (EIA-861, 2024) · cost-of-living index 99.4 · median household income $81,166.
What drives Idaho utility bills
Heating is Idaho's larger weather load: a normal July-to-June brings 6,908 heating against 456 cooling degree days. The 2025–26 heating season peaked in Jan 2026.
Natural gas supplied 42.3% of Idaho home energy in 2024, electricity 41.5%.
Idaho Power Co sold 58.8% of Idaho's 2024 residential electricity, Avista Corp 13.8%.
| Month | Heating | Cooling |
|---|---|---|
| Jul 2025 | 2 | 211 |
| Aug 2025 | 1 | 187 |
| Sep 2025 | 87 | 85 |
| Oct 2025 | 566 | 1 |
| Nov 2025 | 708 | 0 |
| Dec 2025 | 892 | 0 |
| Jan 2026 | 1,067 | 0 |
| Feb 2026 | 805 | 0 |
| Mar 2026 | 659 | 0 |
| Apr 2026 | 607 | 0 |
| May 2026 | 279 | 17 |
| Jun 2026 | 141 | 60 |
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 Idaho?
EIA 2024: $108.73 a month (944 kWh × 11.52¢). July 2026 price 13.73¢: $130.
National Data
The full 50-state dataset behind this calculator
Compare Idaho With Other States
Side-by-side tax, housing & cost of living comparisons