What it costs to charge a 2026 Cadillac OPTIQ AWD (11 kW Charger) in Montana

In Montana, home electricity runs 13.77¢/kWh — put a 2026 Cadillac OPTIQ AWD (11 kW Charger)'s EPA-rated 34 kWh/100mi against that and 100 miles costs $4.69, versus $16.02 for a gas car averaging 25.5 mpg. That works out to 70.8% cheaper per mile than gasoline in Montana — charging at home costs a fraction of what gas would here.

Annual cost, at 15 thousands miles a year

Home charging this 2026 Cadillac OPTIQ AWD (11 kW Charger) in Montana runs about $703 over fueleconomy.gov's default 15,000 annual miles, versus about $2,403 for the gasoline equivalent. Call it about $1,700 saved annually, at this mileage.

What one full charge costs

$14.2 — that's what Montana's 13.77¢/kWh rate puts on the 103.1 kWh a 2026 Cadillac OPTIQ AWD (11 kW Charger) needs for its full 303-mile EPA range.

How this compares nationally

Among all 20,400 state-and-model combinations this site tracks, charging a 2026 Cadillac OPTIQ AWD (11 kW Charger) in Montana ranks 3,101 for cost savings versus gas — 1 being the best deal nationally. Separately, the Cadillac OPTIQ AWD (11 kW Charger) ranks 125 of 400 EV models for raw efficiency, and Montana ranks 10 of 51 for cheapest residential electricity.

Next step: home charger installation

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.

Line up a few Montana electrician quotes for Level 2 install before you commit either way.

More on how this number was built

The methodology guide names the exact EIA and EPA tables behind this page's numbers. Curious how Montana's 13.77¢/kWh compares? The guide to charging cost by state ranks every state side by side.