Massachusetts home charging cost for the 2026 Cadillac OPTIQ RWD (19 kW Charger)

A 2026 Cadillac OPTIQ RWD (19 kW Charger) draws 32.1 kWh per 100 miles per the EPA; at Massachusetts's 30.06¢/kWh residential rate that's $9.64 per 100 miles charged at home, versus $16.02 for a 25.5-mpg gas car covering the same distance. Charging at home is cheaper than gas here: 39.8% less than gas per mile, here specifically.

What a year of driving costs

At fueleconomy.gov's default of 15,000 annual miles, the 2026 Cadillac OPTIQ RWD (19 kW Charger) costs roughly $1,447 a year to charge at home in Massachusetts, against roughly $2,403 a year for an equivalent gas car. That's a savings of about $956 a year.

Cost of a full charge

Covering the 2026 Cadillac OPTIQ RWD (19 kW Charger)'s EPA-rated 317-mile range takes about 101.7 kWh, which costs about $30.57 at Massachusetts's residential rate — figured from the EPA's own combined range and consumption numbers, not the pack's nameplate capacity.

How this compares nationally

This combination ranks 17,100 of 20,400 state/model pairs for cost savings against gas (1 is cheapest). The Cadillac OPTIQ RWD (19 kW Charger) alone ranks 91 of 400 models for efficiency; Massachusetts alone ranks 49 of 51 states for electricity price.

Next step: home charger installation

The numbers above assume Level 2 home charging is already in place — the electrical work behind that is a real, separate cost that varies by panel, wiring, and local labor rates, not something this page's per-mile math includes.

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

Where these figures come from

Every figure on this page traces to a named EIA or EPA dataset — see the methodology guide. Massachusetts has some of the highest residential electricity rates in the country — see the guide to why the cost varies so much by state for the full picture.