Wyoming home charging cost for the 2026 Rivian R1S Dual Max (20in)

In Wyoming, home electricity runs 13.88¢/kWh — put a 2026 Rivian R1S Dual Max (20in)'s EPA-rated 42 kWh/100mi against that and 100 miles costs $5.83, versus $16.02 for a gas car averaging 25.5 mpg. Charging at home is much cheaper than gas here: 63.6% 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 Dual Max (20in) costs roughly $874 a year to charge at home in Wyoming, against roughly $2,403 a year for an equivalent gas car. That's a savings of about $1,529 a year.

Cost of a full charge

Covering the 2026 Rivian R1S Dual Max (20in)'s EPA-rated 380-mile range takes about 159.5 kWh, which costs about $22.14 at Wyoming'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 8,659 of 20,400 state/model pairs for cost savings against gas (1 is cheapest). The Rivian R1S Dual Max (20in) alone ranks 298 of 400 models for efficiency; Wyoming alone ranks 12 of 51 states for electricity price.

Getting set up to charge a 2026 Rivian R1S Dual Max (20in) at home

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.

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

Where these figures come from

Every figure on this page traces to a named EIA or EPA dataset — see the methodology guide. At 13.88¢/kWh, Wyoming sits in the middle of the national range — the guide to why charging cost varies by state shows where.