What it costs to charge a 2026 Rivian R1S Quad Max (20in AT) in Oregon

A 2026 Rivian R1S Quad Max (20in AT) draws 50.1 kWh per 100 miles per the EPA; at Oregon's 15.31¢/kWh residential rate that's $7.67 per 100 miles charged at home, versus $16.02 for a 25.5-mpg gas car covering the same distance. That works out to 52.1% cheaper per mile than gasoline in Oregon — charging at home is much cheaper than gas here.

2026 Rivian R1S Quad Max (20in AT): yearly cost in Oregon

Home charging this 2026 Rivian R1S Quad Max (20in AT) in Oregon runs about $1,151 over fueleconomy.gov's default 15,000 annual miles, versus about $2,403 for the gasoline equivalent. Call it about $1,252 saved annually, at this mileage.

What one full charge costs

$24.93 — that's what Oregon's 15.31¢/kWh rate puts on the 162.8 kWh a 2026 Rivian R1S Quad Max (20in AT) needs for its full 325-mile EPA range.

How this compares nationally

Among all 20,400 state-and-model combinations this site tracks, charging a 2026 Rivian R1S Quad Max (20in AT) in Oregon ranks 14,528 for cost savings versus gas — 1 being the best deal nationally. Separately, the Rivian R1S Quad Max (20in AT) ranks 392 of 400 EV models for raw efficiency, and Oregon ranks 21 of 51 for cheapest residential electricity.

Next step: home charger installation

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 Oregon 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 Quad Max (20in AT)'s cost in Oregon. Curious how Oregon's 15.31¢/kWh compares? The guide to charging cost by state ranks every state side by side.