What it costs to charge a 2027 Rivian R1S Premium (22in) in Colorado

In Colorado, home electricity runs 16.65¢/kWh — put a 2027 Rivian R1S Premium (22in)'s EPA-rated 39.5 kWh/100mi against that and 100 miles costs $6.57, versus $16.02 for a gas car averaging 25.5 mpg. That works out to 59% cheaper per mile than gasoline in Colorado — charging at home is much cheaper than gas here.

What a year of driving costs

Home charging this 2027 Rivian R1S Premium (22in) in Colorado runs about $986 over fueleconomy.gov's default 15,000 annual miles, versus about $2,403 for the gasoline equivalent. Call it about $1,417 saved annually, at this mileage.

What one full charge costs

$21.62 — that's what Colorado's 16.65¢/kWh rate puts on the 129.9 kWh a 2027 Rivian R1S Premium (22in) needs for its full 329-mile EPA range.

Where this ranks

Among all 20,400 state-and-model combinations this site tracks, charging a 2027 Rivian R1S Premium (22in) in Colorado ranks 11,649 for cost savings versus gas — 1 being the best deal nationally. Separately, the Rivian R1S Premium (22in) ranks 249 of 400 EV models for raw efficiency, and Colorado ranks 30 of 51 for cheapest residential electricity.

Before you install a home charger in Colorado

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.

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

More on how this number was built

Every figure on this page traces to a named EIA or EPA dataset — see the methodology guide. Curious how Colorado's 16.65¢/kWh compares? The guide to charging cost by state ranks every state side by side.