Charging a 2027 Cadillac OPTIQ RWD 19kW Charger at home in Washington

At Washington's residential electricity rate of 14.35¢/kWh, a 2027 Cadillac OPTIQ RWD 19kW Charger (rated 32.1 kWh per 100 miles by the EPA) costs $4.6 to drive 100 miles on home charging, against $16.02 for the same distance in a car averaging 25.5 mpg on gasoline at $4.085/gallon. That works out to 71.3% cheaper per mile than gasoline in Washington — charging at home costs a fraction of what gas would here.

What a year of driving costs

Washington owners putting 15,000 annual miles on a 2027 Cadillac OPTIQ RWD 19kW Charger spend about $691 on home electricity, compared to about $2,403 a gas-car equivalent would spend on fuel. Call it about $1,712 saved annually, at this mileage.

What one full charge costs

At Washington's rate, fully covering this 2027 Cadillac OPTIQ RWD 19kW Charger's 317-mile EPA range costs about $14.59 (101.7 kWh) — the energy the EPA test actually used, not the battery's rated size.

2027 Cadillac OPTIQ RWD 19kW Charger in Washington, ranked

Among all 20,400 state-and-model combinations this site tracks, charging a 2027 Cadillac OPTIQ RWD 19kW Charger in Washington ranks 2,805 for cost savings versus gas — 1 being the best deal nationally. Separately, the Cadillac OPTIQ RWD 19kW Charger ranks 89 of 400 EV models for raw efficiency, and Washington ranks 15 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.

Ask a licensed Washington 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. Washington's 14.35¢/kWh rate ranks 15 of 51 states; the state rate guide lays out the full spread.