Charging a 2026 Rivian R1S All-Terrain Performance Dual Large Plus (20in) at home in California

At California's residential electricity rate of 33.17¢/kWh, a 2026 Rivian R1S All-Terrain Performance Dual Large Plus (20in) (rated 46.9 kWh per 100 miles by the EPA) costs $15.55 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 2.9% 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

California owners putting 15,000 annual miles on a 2026 Rivian R1S All-Terrain Performance Dual Large Plus (20in) spend about $2,333 on home electricity, compared to about $2,403 a gas-car equivalent would spend on fuel. Call it about $70 saved annually, at this mileage.

What one full charge costs

At California's rate, fully covering this 2026 Rivian R1S All-Terrain Performance Dual Large Plus (20in)'s 292-mile EPA range costs about $45.41 (136.9 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 All-Terrain Performance Dual Large Plus (20in) in California ranks 20,053 for cost savings versus gas — 1 being the best deal nationally. Separately, the Rivian R1S All-Terrain Performance Dual Large Plus (20in) ranks 366 of 400 EV models for raw efficiency, and California ranks 50 of 51 for cheapest residential electricity.

Before you install a home charger in California

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 All-Terrain Performance Dual Large Plus (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.