GMC Sierra EV in Idaho
Home charging at 11.59¢/kWh (EIA). 44 kWh per 100 miles (EPA combined). Public DC fast: 38¢/kWh avg.
EV vs gas car — annual fuel cost
The GMC Sierra EV at home rates compared against a typical 28-mpg gas car and a 40-mpg hybrid at the Idaho fuel price ($3.45/gal).
| Annual mileage | GMC Sierra EV (home) | 28-mpg gas | 40-mpg hybrid | EV savings vs gas |
|---|---|---|---|---|
| 6,000 mi | $306 | $739 | $518 | $433 |
| 10,000 mi | $510 | $1232 | $863 | $722 |
| 12,000 mi | $612 | $1479 | $1035 | $867 |
| 15,000 mi | $765 | $1848 | $1294 | $1083 |
| 20,000 mi | $1020 | $2464 | $1725 | $1444 |
Home vs public DC fast charging
Home charging is the default cost optimization. Public DC fast charging in Idaho runs about 3.3× the home rate. For 12,000 miles/yr entirely on DC fast, annual fuel cost would be $2006 vs $612 at home — a $1394 penalty. Apartment dwellers and road-trippers should price this in; daily commuters with home Level 2 can usually ignore public chargers.
DC fast rate is a network average (Electrify America + EVgo + Tesla Supercharger + ChargePoint). Real prices vary by location, time of day, and membership tier.
EV incentives in Idaho
Idaho does not currently run a state-level EV purchase rebate. Federal Section 30D credit of $7,500 still applies for qualifying vehicles (US-assembled with sourced battery components, MSRP cap, household income cap). Check the EV tax credit eligibility list for your vehicle. Some utilities offer charger installation rebates — check with your local utility.
Same vehicle in neighboring states
How GMC Sierra EV cost compares in Idaho's contiguous neighbors. Relevant for cross-border driving and relocation decisions.
| State | Electricity | Gas | EV / 100mi | Saves vs gas |
|---|---|---|---|---|
| Idaho (current) | 11.59¢ | $3.45 | $5.10 | $7.22 |
| Wyoming | 11.16¢ | $3.20 | $4.91 | $6.52 |
| Utah | 11.18¢ | $3.30 | $4.92 | $6.87 |
| Washington | 11.86¢ | $4.10 | $5.22 | $9.42 |
| Montana | 12.55¢ | $3.30 | $5.52 | $6.26 |
| Oregon | 13.92¢ | $3.80 | $6.12 | $7.45 |
| Nevada | 16.04¢ | $3.85 | $7.06 | $6.69 |
Vehicle specs
- EPA combined efficiency: 44 kWh/100 miles
- EPA range: 440 miles
- Make / model: GMC Sierra EV
Other EVs in Idaho
Common questions
- How much does it cost to charge a GMC Sierra EV at home in Idaho?
- About $5.10 per 100 miles at the Idaho residential electricity rate of 11.59¢/kWh (EIA). For comparison, a 28-mpg gas car at local gas prices costs $12.32 per 100 miles. Annual savings at 12,000 miles: ~$867.
- Home charging vs public DC fast charging — what's the difference in Idaho?
- Public DC fast charging in Idaho averages ~38¢/kWh — that's 3.3× home rates. A 100-mile session costs roughly $16.72 at public chargers vs $5.10 at home. For daily commuting, home charging pays off. Public fast charging is for road trips and apartment dwellers without home charging access.
- Are there EV incentives in Idaho?
- Idaho does not currently run a state-level EV purchase rebate. The federal Section 30D tax credit ($7,500) still applies for qualifying vehicles, and your utility may run separate charger-installation rebates.
- Does winter weather affect charging cost in Idaho?
- Yes — cold weather can reduce EV efficiency by 15-30% (battery + heater draw). The numbers above use EPA combined ratings; budget +20% for sustained sub-freezing temps. Winter range drop is most pronounced for northern states.
Full data sources and formulas: /sources.