What it costs to charge a 2027 Rivian R1S Premium Long Range (20in) in Maine

A 2027 Rivian R1S Premium Long Range (20in) draws 42 kWh per 100 miles per the EPA; at Maine's 29.67¢/kWh residential rate that's $12.45 per 100 miles charged at home, versus $16.02 for a 25.5-mpg gas car covering the same distance. That works out to 22.3% cheaper per mile than gasoline in Maine — charging at home is cheaper than gas here.

Annual cost, at 15 thousands miles a year

Home charging this 2027 Rivian R1S Premium Long Range (20in) in Maine runs about $1,868 over fueleconomy.gov's default 15,000 annual miles, versus about $2,403 for the gasoline equivalent. Call it about $535 saved annually, at this mileage.

Cost of a full charge

$47.32 — that's what Maine's 29.67¢/kWh rate puts on the 159.5 kWh a 2027 Rivian R1S Premium Long Range (20in) needs for its full 380-mile EPA range.

How this compares nationally

Among all 20,400 state-and-model combinations this site tracks, charging a 2027 Rivian R1S Premium Long Range (20in) in Maine ranks 19,249 for cost savings versus gas — 1 being the best deal nationally. Separately, the Rivian R1S Premium Long Range (20in) ranks 296 of 400 EV models for raw efficiency, and Maine ranks 48 of 51 for cheapest residential electricity.

Next step: home charger installation

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.

Ask a licensed Maine electrician to quote the install before this math becomes a real decision.

More on how this number was built

Every figure on this page traces to a named EIA or EPA dataset — see the methodology guide. Maine 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.