Charging a 2027 Cadillac OPTIQ RWD 11kW Charger at home in Montana

A 2027 Cadillac OPTIQ RWD 11kW Charger draws 32.1 kWh per 100 miles per the EPA; at Montana's 13.77¢/kWh residential rate that's $4.42 per 100 miles charged at home, versus $16.02 for a 25.5-mpg gas car covering the same distance. That works out to 72.4% 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

Montana owners putting 15,000 annual miles on a 2027 Cadillac OPTIQ RWD 11kW Charger spend about $663 on home electricity, compared to about $2,403 a gas-car equivalent would spend on fuel. Call it about $1,740 saved annually, at this mileage.

Filling up the 2027 Cadillac OPTIQ RWD 11kW Charger, in dollars

At Montana's rate, fully covering this 2027 Cadillac OPTIQ RWD 11kW Charger's 317-mile EPA range costs about $14 (101.7 kWh) — the energy the EPA test actually used, not the battery's rated size.

How this compares nationally

Among all 20,400 state-and-model combinations this site tracks, charging a 2027 Cadillac OPTIQ RWD 11kW Charger in Montana ranks 2,130 for cost savings versus gas — 1 being the best deal nationally. Separately, the Cadillac OPTIQ RWD 11kW Charger ranks 88 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.

Get quotes from local electricians for Level 2 charger installation in Montana before deciding.

More on how this number was built

See the methodology guide for exactly which EIA and EPA figures feed 2027 Cadillac OPTIQ RWD 11kW Charger's cost in Montana. Curious how Montana's 13.77¢/kWh compares? The guide to charging cost by state ranks every state side by side.