Charging a 2026 Cadillac OPTIQ RWD (11 kW Charger) at home in District of Columbia

In District of Columbia, home electricity runs 24.54¢/kWh — put a 2026 Cadillac OPTIQ RWD (11 kW Charger)'s EPA-rated 32.1 kWh/100mi against that and 100 miles costs $7.87, versus $16.02 for a gas car averaging 25.5 mpg. That works out to 50.9% cheaper per mile than gasoline in District of Columbia — charging at home is much cheaper than gas here.

Annual cost, at 15 thousands miles a year

District of Columbia owners putting 15,000 annual miles on a 2026 Cadillac OPTIQ RWD (11 kW Charger) spend about $1,181 on home electricity, compared to about $2,403 a gas-car equivalent would spend on fuel. Call it about $1,222 saved annually, at this mileage.

What one full charge costs

At District of Columbia's rate, fully covering this 2026 Cadillac OPTIQ RWD (11 kW Charger)'s 317-mile EPA range costs about $24.96 (101.7 kWh) — the energy the EPA test actually used, not the battery's rated size.

Where this ranks

Among all 20,400 state-and-model combinations this site tracks, charging a 2026 Cadillac OPTIQ RWD (11 kW Charger) in District of Columbia ranks 14,836 for cost savings versus gas — 1 being the best deal nationally. Separately, the Cadillac OPTIQ RWD (11 kW Charger) ranks 90 of 400 EV models for raw efficiency, and District of Columbia ranks 42 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 District of Columbia 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 District of Columbia's 24.54¢/kWh compares? The guide to charging cost by state ranks every state side by side.