What it costs to charge a 2026 Rivian R1S Quad Max (22in) in Maryland

At Maryland's residential electricity rate of 21.27¢/kWh, a 2026 Rivian R1S Quad Max (22in) (rated 44.4 kWh per 100 miles by the EPA) costs $9.44 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. That works out to 41.1% cheaper per mile than gasoline in Maryland — charging at home is much cheaper than gas here.

Annual cost, at 15 thousands miles a year

Home charging this 2026 Rivian R1S Quad Max (22in) in Maryland runs about $1,416 over fueleconomy.gov's default 15,000 annual miles, versus about $2,403 for the gasoline equivalent. Call it about $987 saved annually, at this mileage.

Cost of a full charge

$35.3 — that's what Maryland's 21.27¢/kWh rate puts on the 166 kWh a 2026 Rivian R1S Quad Max (22in) needs for its full 374-mile EPA range.

Where this ranks

Among all 20,400 state-and-model combinations this site tracks, charging a 2026 Rivian R1S Quad Max (22in) in Maryland ranks 16,885 for cost savings versus gas — 1 being the best deal nationally. Separately, the Rivian R1S Quad Max (22in) ranks 350 of 400 EV models for raw efficiency, and Maryland ranks 39 of 51 for cheapest residential electricity.

Getting set up to charge a 2026 Rivian R1S Quad Max (22in) at home

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.

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

More on how this number was built

See the methodology guide for exactly which EIA and EPA figures feed 2026 Rivian R1S Quad Max (22in)'s cost in Maryland. Maryland's 21.27¢/kWh rate ranks 39 of 51 states; the state rate guide lays out the full spread.