Charging a 2026 Rivian R1S Performance Dual Large (20in) at home in Colorado

A 2026 Rivian R1S Performance Dual Large (20in) draws 42.9 kWh per 100 miles per the EPA; at Colorado's 16.65¢/kWh residential rate that's $7.14 per 100 miles charged at home, versus $16.02 for a 25.5-mpg gas car covering the same distance. That works out to 55.4% cheaper per mile than gasoline in Colorado — charging at home is much cheaper than gas here.

What a year of driving costs

Colorado owners putting 15,000 annual miles on a 2026 Rivian R1S Performance Dual Large (20in) spend about $1,071 on home electricity, compared to about $2,403 a gas-car equivalent would spend on fuel. Call it about $1,332 saved annually, at this mileage.

Cost of a full charge

At Colorado's rate, fully covering this 2026 Rivian R1S Performance Dual Large (20in)'s 300-mile EPA range costs about $21.41 (128.6 kWh) — the energy the EPA test actually used, not the battery's rated size.

How this compares nationally

Among all 20,400 state-and-model combinations this site tracks, charging a 2026 Rivian R1S Performance Dual Large (20in) in Colorado ranks 13,380 for cost savings versus gas — 1 being the best deal nationally. Separately, the Rivian R1S Performance Dual Large (20in) ranks 317 of 400 EV models for raw efficiency, and Colorado ranks 30 of 51 for cheapest residential electricity.

Next step: home charger installation

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.

Line up a few Colorado electrician quotes for Level 2 install before you commit either way.

More on how this number was built

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.