2026 Rivian R1S All-Terrain Performance Dual Max (20in),…

What it costs to charge a 2026 Rivian R1S All-Terrain Performance Dual Max (20in) in Oklahoma

A 2026 Rivian R1S All-Terrain Performance Dual Max (20in) draws 43.2 kWh per 100 miles per the EPA; at Oklahoma's 13.37¢/kWh residential rate that's $5.78 per 100 miles charged at home, versus $16.02 for a 25.5-mpg gas car covering the same distance. That works out to 63.9% cheaper per mile than gasoline in Oklahoma, charging at home is much cheaper than gas here.

Annual cost, at 15 thousands miles a year

Home charging this 2026 Rivian R1S All-Terrain Performance Dual Max (20in) in Oklahoma runs about $867 over fueleconomy.gov's default 15,000 annual miles, versus about $2,403 for the gasoline equivalent. Call it about $1,536 saved annually, at this mileage.

Filling up the 2026 Rivian R1S All-Terrain Performance Dual Max (20in), in dollars

$21.38, that's what Oklahoma's 13.37¢/kWh rate puts on the 159.9 kWh a 2026 Rivian R1S All-Terrain Performance Dual Max (20in) needs for its full 370-mile EPA range.

Where this ranks

Among all 20,400 state-and-model combinations this site tracks, charging a 2026 Rivian R1S All-Terrain Performance Dual Max (20in) in Oklahoma ranks 8,426 for cost savings versus gas, 1 being the best deal nationally. Separately, the Rivian R1S All-Terrain Performance Dual Max (20in) ranks 334 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.

Ask a licensed Oklahoma 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. 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.