What it costs to charge a 2026 Cadillac OPTIQ AWD (19 kW Charger) in Montana

A 2026 Cadillac OPTIQ AWD (19 kW Charger) draws 34 kWh per 100 miles per the EPA; at Montana's 13.77¢/kWh residential rate that's $4.69 per 100 miles charged at home, versus $16.02 for a 25.5-mpg gas car covering the same distance. That works out to 70.8% cheaper per mile than gasoline in Montana — charging at home costs a fraction of what gas would here.

What a year of driving costs

Home charging this 2026 Cadillac OPTIQ AWD (19 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.

Cost of a full charge

$14.2 — that's what Montana's 13.77¢/kWh rate puts on the 103.1 kWh a 2026 Cadillac OPTIQ AWD (19 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 (19 kW Charger) in Montana ranks 3,102 for cost savings versus gas — 1 being the best deal nationally. Separately, the Cadillac OPTIQ AWD (19 kW Charger) ranks 126 of 400 EV models for raw efficiency, and Montana ranks 10 of 51 for cheapest residential electricity.

Getting set up to charge a 2026 Cadillac OPTIQ AWD (19 kW Charger) 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 Montana 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. Curious how Montana's 13.77¢/kWh compares? The guide to charging cost by state ranks every state side by side.