Massachusetts home charging cost for the 2027 Rivian R1S Premium (20in AT)

A 2027 Rivian R1S Premium (20in AT) draws 44.4 kWh per 100 miles per the EPA; at Massachusetts's 30.06¢/kWh residential rate that's $13.34 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: 16.8% less than gas per mile, here specifically.

2027 Rivian R1S Premium (20in AT): yearly cost in Massachusetts

At fueleconomy.gov's default of 15,000 annual miles, the 2027 Rivian R1S Premium (20in AT) costs roughly $2,000 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 $403 a year.

What one full charge costs

Covering the 2027 Rivian R1S Premium (20in AT)'s EPA-rated 289-mile range takes about 128.2 kWh, which costs about $38.54 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 19,653 of 20,400 state/model pairs for cost savings against gas (1 is cheapest). The Rivian R1S Premium (20in AT) alone ranks 342 of 400 models for efficiency; Massachusetts alone ranks 49 of 51 states for electricity price.

Before you install a home charger in Massachusetts

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

The methodology guide names the exact EIA and EPA tables behind this page's numbers. 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.