What it costs to charge a 2026 Rivian R1S All-Terrain Dual Large (20in) in Massachusetts
At Massachusetts's residential electricity rate of 30.06¢/kWh, a 2026 Rivian R1S All-Terrain Dual Large (20in) (rated 44.4 kWh per 100 miles by the EPA) costs $13.34 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 16.8% cheaper per mile than gasoline in Massachusetts — charging at home is cheaper than gas here.
Annual cost, at 15 thousands miles a year
Home charging this 2026 Rivian R1S All-Terrain Dual Large (20in) in Massachusetts runs about $2,000 over fueleconomy.gov's default 15,000 annual miles, versus about $2,403 for the gasoline equivalent. Call it about $403 saved annually, at this mileage.
Filling up the 2026 Rivian R1S All-Terrain Dual Large (20in), in dollars
$38.54 — that's what Massachusetts's 30.06¢/kWh rate puts on the 128.2 kWh a 2026 Rivian R1S All-Terrain Dual Large (20in) needs for its full 289-mile EPA range.
Where this ranks
Among all 20,400 state-and-model combinations this site tracks, charging a 2026 Rivian R1S All-Terrain Dual Large (20in) in Massachusetts ranks 19,655 for cost savings versus gas — 1 being the best deal nationally. Separately, the Rivian R1S All-Terrain Dual Large (20in) ranks 344 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
See the methodology guide for exactly which EIA and EPA figures feed 2026 Rivian R1S All-Terrain Dual Large (20in)'s cost in Massachusetts. 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.