2026 Rivian R1S Quad Max (22in): home charging cost in Colorado

In Colorado, home electricity runs 16.65¢/kWh — put a 2026 Rivian R1S Quad Max (22in)'s EPA-rated 44.4 kWh/100mi against that and 100 miles costs $7.39, versus $16.02 for a gas car averaging 25.5 mpg. Charging at home is much cheaper than gas here: 53.9% less than gas per mile, here specifically.

What a year of driving costs

Driving 15,000 miles a year — fueleconomy.gov's own default assumption — a 2026 Rivian R1S Quad Max (22in) charged at home in Colorado costs about $1,108/year in electricity, against about $2,403/year for the gas-car comparison. That's a savings of about $1,295 a year.

Filling up the 2026 Rivian R1S Quad Max (22in), in dollars

A 2026 Rivian R1S Quad Max (22in) needs roughly 166 kWh to reach its EPA-rated 374-mile range, which runs about $27.63 at 16.65¢/kWh in Colorado.

Where this ranks

This combination ranks 13,959 of 20,400 state/model pairs for cost savings against gas (1 is cheapest). The Rivian R1S Quad Max (22in) alone ranks 350 of 400 models for efficiency; Colorado alone ranks 30 of 51 states for electricity price.

Getting set up to charge a 2026 Rivian R1S Quad Max (22in) 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.

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

Where these figures come from

The methodology guide names the exact EIA and EPA tables behind this page's numbers. At 16.65¢/kWh, Colorado sits in the middle of the national range — the guide to why charging cost varies by state shows where.