What it costs to charge a 2026 Rivian R1S Tri Max (22in) in California

In California, home electricity runs 33.17¢/kWh — put a 2026 Rivian R1S Tri Max (22in)'s EPA-rated 44.6 kWh/100mi against that and 100 miles costs $14.78, versus $16.02 for a gas car averaging 25.5 mpg. That works out to 7.7% cheaper per mile than gasoline in California — charging at home costs a little less than gas here.

Annual cost, at 15 thousands miles a year

Home charging this 2026 Rivian R1S Tri Max (22in) in California runs about $2,218 over fueleconomy.gov's default 15,000 annual miles, versus about $2,403 for the gasoline equivalent. Call it about $185 saved annually, at this mileage.

Cost of a full charge

$54.85 — that's what California's 33.17¢/kWh rate puts on the 165.4 kWh a 2026 Rivian R1S Tri Max (22in) needs for its full 371-mile EPA range.

2026 Rivian R1S Tri Max (22in) in California, ranked

Among all 20,400 state-and-model combinations this site tracks, charging a 2026 Rivian R1S Tri Max (22in) in California ranks 19,984 for cost savings versus gas — 1 being the best deal nationally. Separately, the Rivian R1S Tri Max (22in) ranks 356 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.

Line up a few California 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. 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.