EV vs Gas Cost Comparison in Idaho
See whether an EV beats gas in Idaho for 2026: about $911 a year in fuel savings at $0.108/kWh vs $3.25/gal. Compare full 5-year ownership cost, maintenance, and incentives.
Data last updated July 2026. Sources & methodology
What Idaho Residents Should Know
Electricity in Idaho averages $0.108 per kWh — well below the national average — while regular gasoline runs $3.25 per gallon, which is near the U.S. mean. At these rates, an average EV costs roughly $0.03 per mile to drive compared to about $0.11 per mile for a 30-mpg gas car. Over 12,000 miles a year, that translates to approximately $960 in annual fuel savings for the EV owner.
While Idaho does not widely offer time-of-use electricity plans, the flat residential rate still makes EV ownership cost-effective for most drivers. Charging at home with a Level 2 charger takes about 8 hours for a full battery, and the average monthly electricity increase is roughly $32 for every 1,000 miles driven. Many EV owners find that their overall transportation costs drop substantially even without TOU incentives.
Fuel is only part of the story. EVs skip oil changes and spark plugs and wear brakes far more slowly thanks to regenerative braking, typically saving another $0.04–$0.06 per mile in maintenance — roughly $500–$700 a year at 12,000 miles. The EV case is strongest for Idaho drivers who can charge at home and keep the vehicle for several years; if you rely mostly on public fast charging or drive very little, the advantage narrows.
Avg. Electricity Rate
$0.108/kWh
Avg. monthly bill: $110
Regular Gas Price
$3.25/gal
Natural gas: $0.90/therm
Incentives in Idaho
Federal clean energy tax credits ended in late 2025 under legislation passed in July 2025; they are shown below for reference since recent purchasers may still claim them. State programs are governed separately and many remain active — always verify current details with the program before purchasing.
| Incentive | Type | Amount | Description |
|---|---|---|---|
| New Clean Vehicle Tax Credit (30D)Ended | tax credit | $7,500 | Federal tax credit of up to $7,500 for new qualifying EVs. Ended September 30, 2025 — vehicles acquired after that date do not qualify. Buyers with a binding contract and payment made by the deadline may still claim it for 2025. |
| Used Clean Vehicle Tax Credit (25E)Ended | tax credit | 30% | Federal tax credit of up to $4,000 (30% of sale price) for qualifying used EVs bought from licensed dealers. Ended September 30, 2025 — vehicles acquired after that date do not qualify. |
EV vs Gas Cost in Idaho: Frequently Asked Questions
- Is it cheaper to drive an EV or a gas car in Idaho?
- At Idaho's $0.108/kWh electricity and $3.25/gal gas, an EV costs about $0.03 per mile versus roughly $0.11 per mile for a 30-mpg gas car — so driving electric is cheaper for most drivers.
- How much can I save per year driving an EV in Idaho?
- Over 12,000 miles a year, an EV owner in Idaho saves roughly $911 in fuel compared with a gas car, before factoring in lower maintenance costs.
- What is the average electricity rate in Idaho?
- Residential electricity in Idaho averages about $0.108 per kWh, and the typical monthly bill is around $110.
- Are there EV incentives in Idaho?
- Idaho does not currently offer statewide EV purchase incentives, and the federal clean-vehicle credits ended September 30, 2025. Some local utilities offer EV rate plans or charger rebates, so check with yours.
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