What it costs to charge a 2026 Rivian R1S Dual Large (22in) in Oklahoma

A 2026 Rivian R1S Dual Large (22in) draws 39.5 kWh per 100 miles per the EPA; at Oklahoma's 13.37¢/kWh residential rate that's $5.28 per 100 miles charged at home, versus $16.02 for a 25.5-mpg gas car covering the same distance. That works out to 67.1% cheaper per mile than gasoline in Oklahoma — charging at home costs a fraction of what gas would here.

What a year of driving costs

Home charging this 2026 Rivian R1S Dual Large (22in) in Oklahoma runs about $792 over fueleconomy.gov's default 15,000 annual miles, versus about $2,403 for the gasoline equivalent. Call it about $1,611 saved annually, at this mileage.

What one full charge costs

$17.36 — that's what Oklahoma's 13.37¢/kWh rate puts on the 129.9 kWh a 2026 Rivian R1S Dual Large (22in) needs for its full 329-mile EPA range.

How this compares nationally

Among all 20,400 state-and-model combinations this site tracks, charging a 2026 Rivian R1S Dual Large (22in) in Oklahoma ranks 5,827 for cost savings versus gas — 1 being the best deal nationally. Separately, the Rivian R1S Dual Large (22in) ranks 250 of 400 EV models for raw efficiency, and Oklahoma ranks 5 of 51 for cheapest residential electricity.

Before you install a home charger in Oklahoma

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

More on how this number was built

Every figure on this page traces to a named EIA or EPA dataset — see the methodology guide. Oklahoma is one of the cheapest states for home electricity — the guide to why the cost varies so much by state covers what drives that.