2026 Rivian R1S Performance Dual Large (20in), CA Charging…

California home charging cost for the 2026 Rivian R1S Performance Dual Large (20in)

In California, home electricity runs 33.17¢/kWh, put a 2026 Rivian R1S Performance 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. Charging at home costs a little less than gas here: 11.2% less than gas per mile, here specifically.

Annual cost, at 15 thousands miles a year

At fueleconomy.gov's default of 15,000 annual miles, the 2026 Rivian R1S Performance Dual Large (20in) costs roughly $2,133 a year to charge at home in California, against roughly $2,403 a year for an equivalent gas car. That's a savings of about $270 a year.

What one full charge costs

Covering the 2026 Rivian R1S Performance Dual Large (20in)'s EPA-rated 300-mile range takes about 128.6 kWh, which costs about $42.66 at California's residential rate, figured from the EPA's own combined range and consumption numbers, not the pack's nameplate capacity.

Where this ranks

This combination ranks 19,858 of 20,400 state/model pairs for cost savings against gas (1 is cheapest). The Rivian R1S Performance Dual Large (20in) alone ranks 317 of 400 models for efficiency; California alone ranks 50 of 51 states for electricity price.

Next step: home charger installation

The numbers above assume Level 2 home charging is already in place, the electrical work behind that is a real, separate cost that varies by panel, wiring, and local labor rates, not something this page's per-mile math includes.

Line up a few California electrician quotes for Level 2 install before you commit either way.

Where these figures come from

Every figure on this page traces to a named EIA or EPA dataset, see the methodology guide. 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.