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

At Colorado's residential electricity rate of 16.65¢/kWh, a 2026 Rivian R1S Dual Large (20in) (rated 42.9 kWh per 100 miles by the EPA) costs $7.14 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. Charging at home is much cheaper than gas here: 55.4% less than gas per mile, here specifically.

What a year of driving costs

At fueleconomy.gov's default of 15,000 annual miles, the 2026 Rivian R1S Dual Large (20in) costs roughly $1,071 a year to charge at home in Colorado, against roughly $2,403 a year for an equivalent gas car. That's a savings of about $1,332 a year.

What one full charge costs

Covering the 2026 Rivian R1S Dual Large (20in)'s EPA-rated 300-mile range takes about 128.6 kWh, which costs about $21.41 at Colorado'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 13,378 of 20,400 state/model pairs for cost savings against gas (1 is cheapest). The Rivian R1S Dual Large (20in) alone ranks 316 of 400 models for efficiency; Colorado alone ranks 30 of 51 states for electricity price.

Getting set up to charge a 2026 Rivian R1S Dual Large (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.

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. Colorado's 16.65¢/kWh rate ranks 30 of 51 states; the state rate guide lays out the full spread.