What it costs to charge a 2027 Rivian R1S Premium Long Range (20in AT) in California

A 2027 Rivian R1S Premium Long Range (20in AT) draws 43.2 kWh per 100 miles per the EPA; at California's 33.17¢/kWh residential rate that's $14.34 per 100 miles charged at home, versus $16.02 for a 25.5-mpg gas car covering the same distance. That works out to 10.5% cheaper per mile than gasoline in California — charging at home costs a little less than gas here.

What a year of driving costs

Home charging this 2027 Rivian R1S Premium Long Range (20in AT) in California runs about $2,151 over fueleconomy.gov's default 15,000 annual miles, versus about $2,403 for the gasoline equivalent. Call it about $252 saved annually, at this mileage.

Cost of a full charge

$53.05 — that's what California's 33.17¢/kWh rate puts on the 159.9 kWh a 2027 Rivian R1S Premium Long Range (20in AT) needs for its full 370-mile EPA range.

Where this ranks

Among all 20,400 state-and-model combinations this site tracks, charging a 2027 Rivian R1S Premium Long Range (20in AT) in California ranks 19,892 for cost savings versus gas — 1 being the best deal nationally. Separately, the Rivian R1S Premium Long Range (20in AT) ranks 331 of 400 EV models for raw efficiency, and California ranks 50 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 California before deciding.

More on how this number was built

The methodology guide names the exact EIA and EPA tables behind this page's numbers. California has some of the highest residential electricity rates in the country — see the guide to why the cost varies so much by state for the full picture.