2027 Rivian R1S Premium Long Range (22in): home charging cost in Louisiana

At Louisiana's residential electricity rate of 13.51¢/kWh, a 2027 Rivian R1S Premium Long Range (22in) (rated 39.9 kWh per 100 miles by the EPA) costs $5.4 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 costs a fraction of what gas would here: 66.3% 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 2027 Rivian R1S Premium Long Range (22in) charged at home in Louisiana costs about $809/year in electricity, against about $2,403/year for the gas-car comparison. That's a savings of about $1,594 a year.

What one full charge costs

A 2027 Rivian R1S Premium Long Range (22in) needs roughly 163.7 kWh to reach its EPA-rated 410-mile range, which runs about $22.12 at 13.51¢/kWh in Louisiana.

How this compares nationally

This combination ranks 6,447 of 20,400 state/model pairs for cost savings against gas (1 is cheapest). The Rivian R1S Premium Long Range (22in) alone ranks 264 of 400 models for efficiency; Louisiana alone ranks 8 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 Louisiana electrician to quote the install before this math becomes a real decision.

Where these figures come from

Every figure on this page traces to a named EIA or EPA dataset — see the methodology guide. Curious how Louisiana's 13.51¢/kWh compares? The guide to charging cost by state ranks every state side by side.