Charging a 2026 Rivian R1S Performance Dual Large (20in) at home in District of Columbia
At District of Columbia's residential electricity rate of 24.54¢/kWh, a 2026 Rivian R1S Performance Dual Large (20in) (rated 42.9 kWh per 100 miles by the EPA) costs $10.52 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 34.3% cheaper per mile than gasoline in District of Columbia — charging at home is cheaper than gas here.
Annual cost, at 15 thousands miles a year
District of Columbia owners putting 15,000 annual miles on a 2026 Rivian R1S Performance Dual Large (20in) spend about $1,578 on home electricity, compared to about $2,403 a gas-car equivalent would spend on fuel. Call it about $825 saved annually, at this mileage.
Cost of a full charge
At District of Columbia's rate, fully covering this 2026 Rivian R1S Performance Dual Large (20in)'s 300-mile EPA range costs about $31.56 (128.6 kWh) — the energy the EPA test actually used, not the battery's rated size.
How this compares nationally
Among all 20,400 state-and-model combinations this site tracks, charging a 2026 Rivian R1S Performance Dual Large (20in) in District of Columbia ranks 17,907 for cost savings versus gas — 1 being the best deal nationally. Separately, the Rivian R1S Performance Dual Large (20in) ranks 317 of 400 EV models for raw efficiency, and District of Columbia ranks 42 of 51 for cheapest residential electricity.
Getting set up to charge a 2026 Rivian R1S Performance Dual Large (20in) 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.
Line up a few District of Columbia 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. District of Columbia's 24.54¢/kWh rate ranks 42 of 51 states; the state rate guide lays out the full spread.