2026 Rivian R1S All-Terrain Dual Large (20in): home charging cost in Colorado

A 2026 Rivian R1S All-Terrain Dual Large (20in) draws 44.4 kWh per 100 miles per the EPA; at Colorado's 16.65¢/kWh residential rate that's $7.39 per 100 miles charged at home, versus $16.02 for a 25.5-mpg gas car covering the same distance. Charging at home is much cheaper than gas here: 53.9% less than gas per mile, here specifically.

Annual cost, at 15 thousands miles a year

Driving 15,000 miles a year — fueleconomy.gov's own default assumption — a 2026 Rivian R1S All-Terrain Dual Large (20in) 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.

What one full charge costs

A 2026 Rivian R1S All-Terrain Dual Large (20in) needs roughly 128.2 kWh to reach its EPA-rated 289-mile range, which runs about $21.35 at 16.65¢/kWh in Colorado.

How this compares nationally

This combination ranks 13,957 of 20,400 state/model pairs for cost savings against gas (1 is cheapest). The Rivian R1S All-Terrain Dual Large (20in) alone ranks 344 of 400 models for efficiency; Colorado alone ranks 30 of 51 states for electricity price.

Before you install a home charger in Colorado

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 Colorado electrician quotes for Level 2 install before you commit either way.

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.