2026 Rivian R1S All-Terrain Tri Max (20in), OK Charging Cost

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

A 2026 Rivian R1S All-Terrain Tri Max (20in) draws 49.8 kWh per 100 miles per the EPA; at Oklahoma's 13.37¢/kWh residential rate that's $6.66 per 100 miles charged at home, versus $16.02 for a 25.5-mpg gas car covering the same distance. That works out to 58.4% cheaper per mile than gasoline in Oklahoma, charging at home is much cheaper than gas here.

What a year of driving costs

Home charging this 2026 Rivian R1S All-Terrain Tri Max (20in) in Oklahoma runs about $999 over fueleconomy.gov's default 15,000 annual miles, versus about $2,403 for the gasoline equivalent. Call it about $1,404 saved annually, at this mileage.

What one full charge costs

$21.92, that's what Oklahoma's 13.37¢/kWh rate puts on the 164 kWh a 2026 Rivian R1S All-Terrain Tri Max (20in) needs for its full 329-mile EPA range.

2026 Rivian R1S All-Terrain Tri Max (20in) in Oklahoma, ranked

Among all 20,400 state-and-model combinations this site tracks, charging a 2026 Rivian R1S All-Terrain Tri Max (20in) in Oklahoma ranks 12,074 for cost savings versus gas, 1 being the best deal nationally. Separately, the Rivian R1S All-Terrain Tri Max (20in) ranks 388 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

See the methodology guide for exactly which EIA and EPA figures feed 2026 Rivian R1S All-Terrain Tri Max (20in)'s cost in Oklahoma. 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.