What it costs to charge a 2026 Rivian R1S Performance Dual Large Plus (20in) in Massachusetts
In Massachusetts, home electricity runs 30.06¢/kWh — put a 2026 Rivian R1S Performance Dual Large Plus (20in)'s EPA-rated 43.1 kWh/100mi against that and 100 miles costs $12.96, versus $16.02 for a gas car averaging 25.5 mpg. That works out to 19.1% 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 Performance Dual Large Plus (20in) in Massachusetts runs about $1,944 over fueleconomy.gov's default 15,000 annual miles, versus about $2,403 for the gasoline equivalent. Call it about $458 saved annually, at this mileage.
Cost of a full charge
$41.09 — that's what Massachusetts's 30.06¢/kWh rate puts on the 136.7 kWh a 2026 Rivian R1S Performance Dual Large Plus (20in) needs for its full 317-mile EPA range.
2026 Rivian R1S Performance Dual Large Plus (20in) in Massachusetts, ranked
Among all 20,400 state-and-model combinations this site tracks, charging a 2026 Rivian R1S Performance Dual Large Plus (20in) in Massachusetts ranks 19,519 for cost savings versus gas — 1 being the best deal nationally. Separately, the Rivian R1S Performance Dual Large Plus (20in) ranks 328 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.
Get quotes from local electricians for Level 2 charger installation in Massachusetts before deciding.
More on how this number was built
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.