What it costs to charge a 2026 Rivian R1S All-Terrain Dual Large (20in) in Maryland

At Maryland's residential electricity rate of 21.27¢/kWh, a 2026 Rivian R1S All-Terrain Dual Large (20in) (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 All-Terrain Dual Large (20in) in Maryland runs about $1,415 over fueleconomy.gov's default 15,000 annual miles, versus about $2,403 for the gasoline equivalent. Call it about $988 saved annually, at this mileage.

What one full charge costs

$27.27 — that's what Maryland's 21.27¢/kWh rate puts on the 128.2 kWh a 2026 Rivian R1S All-Terrain Dual Large (20in) needs for its full 289-mile EPA range.

How this compares nationally

Among all 20,400 state-and-model combinations this site tracks, charging a 2026 Rivian R1S All-Terrain Dual Large (20in) in Maryland ranks 16,883 for cost savings versus gas — 1 being the best deal nationally. Separately, the Rivian R1S All-Terrain Dual Large (20in) ranks 344 of 400 EV models for raw efficiency, and Maryland ranks 39 of 51 for cheapest residential electricity.

Next step: home charger installation

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 All-Terrain Dual Large (20in)'s cost in Maryland. Maryland's 21.27¢/kWh rate ranks 39 of 51 states; the state rate guide lays out the full spread.