Colorado home charging cost for the 2026 Rivian R1S Quad Max (22in UHP)

A 2026 Rivian R1S Quad Max (22in UHP) draws 47.3 kWh per 100 miles per the EPA; at Colorado's 16.65¢/kWh residential rate that's $7.88 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: 50.8% less than gas per mile, here specifically.

2026 Rivian R1S Quad Max (22in UHP): yearly cost in Colorado

At fueleconomy.gov's default of 15,000 annual miles, the 2026 Rivian R1S Quad Max (22in UHP) costs roughly $1,182 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 $1,220 a year.

What one full charge costs

Covering the 2026 Rivian R1S Quad Max (22in UHP)'s EPA-rated 338-mile range takes about 160 kWh, which costs about $26.65 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 14,870 of 20,400 state/model pairs for cost savings against gas (1 is cheapest). The Rivian R1S Quad Max (22in UHP) alone ranks 373 of 400 models for efficiency; Colorado alone ranks 30 of 51 states for electricity price.

Next step: home charger installation

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 Colorado electrician to quote the install before this math becomes a real decision.

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.