Charging a 2026 Rivian R1S Quad Max (20in AT) at home in California
In California, home electricity runs 33.17¢/kWh — put a 2026 Rivian R1S Quad Max (20in AT)'s EPA-rated 50.1 kWh/100mi against that and 100 miles costs $16.62, versus $16.02 for a gas car averaging 25.5 mpg. Here the math runs the other way: 3.7% more per mile than gasoline, because California's rate and this model's efficiency combine unfavorably.
What a year of driving costs
California owners putting 15,000 annual miles on a 2026 Rivian R1S Quad Max (20in AT) spend about $2,493 on home electricity, compared to about $2,403 a gas-car equivalent would spend on fuel. At this mileage, that's roughly $90 a year worse than the gas comparison.
Filling up the 2026 Rivian R1S Quad Max (20in AT), in dollars
At California's rate, fully covering this 2026 Rivian R1S Quad Max (20in AT)'s 325-mile EPA range costs about $54.01 (162.8 kWh) — the energy the EPA test actually used, not the battery's rated size.
2026 Rivian R1S Quad Max (20in AT) in California, ranked
Among all 20,400 state-and-model combinations this site tracks, charging a 2026 Rivian R1S Quad Max (20in AT) in California ranks 20,144 for cost savings versus gas — 1 being the best deal nationally. Separately, the Rivian R1S Quad Max (20in AT) ranks 392 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 Quad Max (20in AT)'s cost in California. This is one of the combinations where charging costs more than gas — the guide to when that happens explains why the arithmetic can go either way.