What it costs to charge a 2026 Rivian R1S All-Terrain Tri Max (20in) in California

In California, home electricity runs 33.17¢/kWh — put a 2026 Rivian R1S All-Terrain Tri Max (20in)'s EPA-rated 49.8 kWh/100mi against that and 100 miles costs $16.53, versus $16.02 for a gas car averaging 25.5 mpg. Here the math runs the other way: 3.2% more per mile than gasoline, because California's rate and this model's efficiency combine unfavorably.

What a year of driving costs

Home charging this 2026 Rivian R1S All-Terrain Tri Max (20in) in California runs about $2,480 over fueleconomy.gov's default 15,000 annual miles, versus about $2,403 for the gasoline equivalent. At this mileage, that's roughly $77 a year worse than the gas comparison.

Filling up the 2026 Rivian R1S All-Terrain Tri Max (20in), in dollars

$54.38 — that's what California's 33.17¢/kWh rate puts on the 164 kWh a 2026 Rivian R1S All-Terrain Tri Max (20in) needs for its full 329-mile EPA range.

Where this ranks

Among all 20,400 state-and-model combinations this site tracks, charging a 2026 Rivian R1S All-Terrain Tri Max (20in) in California ranks 20,136 for cost savings versus gas — 1 being the best deal nationally. Separately, the Rivian R1S All-Terrain Tri Max (20in) ranks 388 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.

Get quotes from local electricians for Level 2 charger installation in California before deciding.

More on how this number was built

The methodology guide names the exact EIA and EPA tables behind this page's numbers. 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.