Charging a 2026 Rivian R1S Dual Large (20in) at home in California

In California, home electricity runs 33.17¢/kWh — put a 2026 Rivian R1S Dual Large (20in)'s EPA-rated 42.9 kWh/100mi against that and 100 miles costs $14.22, versus $16.02 for a gas car averaging 25.5 mpg. That works out to 11.2% cheaper per mile than gasoline in California — charging at home costs a little less than gas here.

2026 Rivian R1S Dual Large (20in): yearly cost in California

California owners putting 15,000 annual miles on a 2026 Rivian R1S Dual Large (20in) spend about $2,133 on home electricity, compared to about $2,403 a gas-car equivalent would spend on fuel. Call it about $270 saved annually, at this mileage.

What one full charge costs

At California's rate, fully covering this 2026 Rivian R1S Dual Large (20in)'s 300-mile EPA range costs about $42.66 (128.6 kWh) — the energy the EPA test actually used, not the battery's rated size.

Where this ranks

Among all 20,400 state-and-model combinations this site tracks, charging a 2026 Rivian R1S Dual Large (20in) in California ranks 19,856 for cost savings versus gas — 1 being the best deal nationally. Separately, the Rivian R1S Dual Large (20in) ranks 316 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.

Ask a licensed California electrician to quote the install before this math becomes a real decision.

More on how this number was built

See the methodology guide for exactly which EIA and EPA figures feed 2026 Rivian R1S Dual Large (20in)'s cost in California. 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.