Charging a 2027 Rivian R1S Performance (20in) at home in Massachusetts

A 2027 Rivian R1S Performance (20in) draws 47 kWh per 100 miles per the EPA; at Massachusetts's 30.06¢/kWh residential rate that's $14.12 per 100 miles charged at home, versus $16.02 for a 25.5-mpg gas car covering the same distance. That works out to 11.8% cheaper per mile than gasoline in Massachusetts — charging at home costs a little less than gas here.

2027 Rivian R1S Performance (20in): yearly cost in Massachusetts

Massachusetts owners putting 15,000 annual miles on a 2027 Rivian R1S Performance (20in) spend about $2,119 on home electricity, compared to about $2,403 a gas-car equivalent would spend on fuel. Call it about $284 saved annually, at this mileage.

Cost of a full charge

At Massachusetts's rate, fully covering this 2027 Rivian R1S Performance (20in)'s 348-mile EPA range costs about $49.15 (163.5 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 Rivian R1S Performance (20in) in Massachusetts ranks 19,845 for cost savings versus gas — 1 being the best deal nationally. Separately, the Rivian R1S Performance (20in) ranks 369 of 400 EV models for raw efficiency, and Massachusetts ranks 49 of 51 for cheapest residential electricity.

Before you install a home charger in Massachusetts

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 Massachusetts electrician quotes for Level 2 install before you commit either way.

More on how this number was built

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.