2026 Rivian R1S Dual Max (22in): home charging cost in Maine

At Maine's residential electricity rate of 29.67¢/kWh, a 2026 Rivian R1S Dual Max (22in) (rated 39.9 kWh per 100 miles by the EPA) costs $11.85 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. Charging at home is cheaper than gas here: 26% less than gas per mile, here specifically.

What a year of driving costs

Driving 15,000 miles a year — fueleconomy.gov's own default assumption — a 2026 Rivian R1S Dual Max (22in) charged at home in Maine costs about $1,777/year in electricity, against about $2,403/year for the gas-car comparison. That's a savings of about $625 a year.

What one full charge costs

A 2026 Rivian R1S Dual Max (22in) needs roughly 163.7 kWh to reach its EPA-rated 410-mile range, which runs about $48.58 at 29.67¢/kWh in Maine.

How this compares nationally

This combination ranks 18,928 of 20,400 state/model pairs for cost savings against gas (1 is cheapest). The Rivian R1S Dual Max (22in) alone ranks 265 of 400 models for efficiency; Maine alone ranks 48 of 51 states for electricity price.

Before you install a home charger in Maine

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.