Maine home charging cost for the 2027 Rivian R1S Premium (22in)

In Maine, home electricity runs 29.67¢/kWh — put a 2027 Rivian R1S Premium (22in)'s EPA-rated 39.5 kWh/100mi against that and 100 miles costs $11.71, versus $16.02 for a gas car averaging 25.5 mpg. Charging at home is cheaper than gas here: 26.9% less than gas per mile, here specifically.

Annual cost, at 15 thousands miles a year

At fueleconomy.gov's default of 15,000 annual miles, the 2027 Rivian R1S Premium (22in) costs roughly $1,757 a year to charge at home in Maine, against roughly $2,403 a year for an equivalent gas car. That's a savings of about $646 a year.

Filling up the 2027 Rivian R1S Premium (22in), in dollars

Covering the 2027 Rivian R1S Premium (22in)'s EPA-rated 329-mile range takes about 129.9 kWh, which costs about $38.53 at Maine'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 18,839 of 20,400 state/model pairs for cost savings against gas (1 is cheapest). The Rivian R1S Premium (22in) alone ranks 249 of 400 models for efficiency; Maine alone ranks 48 of 51 states for electricity price.

Getting set up to charge a 2027 Rivian R1S Premium (22in) at home

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.

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

Where these figures come from

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