What it costs to charge a 2027 Hyundai Ioniq 9 AWD in Idaho

A 2027 Hyundai Ioniq 9 AWD draws 38 kWh per 100 miles per the EPA; at Idaho's 12.8¢/kWh residential rate that's $4.86 per 100 miles charged at home, versus $16.02 for a 25.5-mpg gas car covering the same distance. That works out to 69.6% cheaper per mile than gasoline in Idaho — charging at home costs a fraction of what gas would here.

What a year of driving costs

Home charging this 2027 Hyundai Ioniq 9 AWD in Idaho runs about $730 over fueleconomy.gov's default 15,000 annual miles, versus about $2,403 for the gasoline equivalent. Call it about $1,673 saved annually, at this mileage.

What one full charge costs

$15.56 — that's what Idaho's 12.8¢/kWh rate puts on the 121.6 kWh a 2027 Hyundai Ioniq 9 AWD needs for its full 320-mile EPA range.

2027 Hyundai Ioniq 9 AWD in Idaho, ranked

Among all 20,400 state-and-model combinations this site tracks, charging a 2027 Hyundai Ioniq 9 AWD in Idaho ranks 3,894 for cost savings versus gas — 1 being the best deal nationally. Separately, the Hyundai Ioniq 9 AWD ranks 216 of 400 EV models for raw efficiency, and Idaho ranks 3 of 51 for cheapest residential electricity.

Getting set up to charge a 2027 Hyundai Ioniq 9 AWD at home

Everything above is the per-mile and per-year cost once a home charger exists — getting one installed is a separate electrical job whose price depends on your panel and wiring, not the state average used here.

Ask a licensed Idaho electrician to quote the install before this math becomes a real decision.

More on how this number was built

Every figure on this page traces to a named EIA or EPA dataset — see the methodology guide. Idaho is one of the cheapest states for home electricity — the guide to why the cost varies so much by state covers what drives that.