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.