2027 Rivian R1S Premium (20in AT): home charging cost in Pennsylvania

At Pennsylvania's residential electricity rate of 20.9¢/kWh, a 2027 Rivian R1S Premium (20in AT) (rated 44.4 kWh per 100 miles by the EPA) costs $9.27 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 much cheaper than gas here: 42.1% 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 2027 Rivian R1S Premium (20in AT) charged at home in Pennsylvania costs about $1,391/year in electricity, against about $2,403/year for the gas-car comparison. That's a savings of about $1,012 a year.

What one full charge costs

A 2027 Rivian R1S Premium (20in AT) needs roughly 128.2 kWh to reach its EPA-rated 289-mile range, which runs about $26.8 at 20.9¢/kWh in Pennsylvania.

Where this ranks

This combination ranks 16,708 of 20,400 state/model pairs for cost savings against gas (1 is cheapest). The Rivian R1S Premium (20in AT) alone ranks 342 of 400 models for efficiency; Pennsylvania alone ranks 37 of 51 states for electricity price.

Next step: home charger installation

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.

Get quotes from local electricians for Level 2 charger installation in Pennsylvania before deciding.

Where these figures come from

The methodology guide names the exact EIA and EPA tables behind this page's numbers. Pennsylvania's 20.9¢/kWh rate ranks 37 of 51 states; the state rate guide lays out the full spread.