2027 Rivian R1S Quad (22in UHP): home charging cost in Maryland

At Maryland's residential electricity rate of 21.27¢/kWh, a 2027 Rivian R1S Quad (22in UHP) (rated 47.3 kWh per 100 miles by the EPA) costs $10.07 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: 37.1% less than gas per mile, here specifically.

Annual cost, at 15 thousands miles a year

Driving 15,000 miles a year — fueleconomy.gov's own default assumption — a 2027 Rivian R1S Quad (22in UHP) charged at home in Maryland costs about $1,511/year in electricity, against about $2,403/year for the gas-car comparison. That's a savings of about $892 a year.

Cost of a full charge

A 2027 Rivian R1S Quad (22in UHP) needs roughly 160 kWh to reach its EPA-rated 338-mile range, which runs about $34.04 at 21.27¢/kWh in Maryland.

2027 Rivian R1S Quad (22in UHP) in Maryland, ranked

This combination ranks 17,494 of 20,400 state/model pairs for cost savings against gas (1 is cheapest). The Rivian R1S Quad (22in UHP) alone ranks 371 of 400 models for efficiency; Maryland alone ranks 39 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.

Line up a few Maryland electrician quotes for Level 2 install before you commit either way.

Where these figures come from

See the methodology guide for exactly which EIA and EPA figures feed 2027 Rivian R1S Quad (22in UHP)'s cost in Maryland. Maryland's 21.27¢/kWh rate ranks 39 of 51 states; the state rate guide lays out the full spread.