Charging a 2027 Rivian R1S Performance (20in) at home in Maryland

A 2027 Rivian R1S Performance (20in) draws 47 kWh per 100 miles per the EPA; at Maryland's 21.27¢/kWh residential rate that's $9.99 per 100 miles charged at home, versus $16.02 for a 25.5-mpg gas car covering the same distance. That works out to 37.6% cheaper per mile than gasoline in Maryland — charging at home is cheaper than gas here.

2027 Rivian R1S Performance (20in): yearly cost in Maryland

Maryland owners putting 15,000 annual miles on a 2027 Rivian R1S Performance (20in) spend about $1,499 on home electricity, compared to about $2,403 a gas-car equivalent would spend on fuel. Call it about $904 saved annually, at this mileage.

Cost of a full charge

At Maryland's rate, fully covering this 2027 Rivian R1S Performance (20in)'s 348-mile EPA range costs about $34.78 (163.5 kWh) — the energy the EPA test actually used, not the battery's rated size.

2027 Rivian R1S Performance (20in) in Maryland, ranked

Among all 20,400 state-and-model combinations this site tracks, charging a 2027 Rivian R1S Performance (20in) in Maryland ranks 17,413 for cost savings versus gas — 1 being the best deal nationally. Separately, the Rivian R1S Performance (20in) ranks 369 of 400 EV models for raw efficiency, and Maryland ranks 39 of 51 for cheapest residential electricity.

Before you install a home charger in Maryland

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.

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

More on how this number was built

The methodology guide names the exact EIA and EPA tables behind this page's numbers. Maryland's 21.27¢/kWh rate ranks 39 of 51 states; the state rate guide lays out the full spread.