Oklahoma home charging cost for the 2026 Rivian R1S Dual Max (20in)

A 2026 Rivian R1S Dual Max (20in) draws 42 kWh per 100 miles per the EPA; at Oklahoma's 13.37¢/kWh residential rate that's $5.61 per 100 miles charged at home, versus $16.02 for a 25.5-mpg gas car covering the same distance. Charging at home is much cheaper than gas here: 65% less than gas per mile, here specifically.

Annual cost, at 15 thousands miles a year

At fueleconomy.gov's default of 15,000 annual miles, the 2026 Rivian R1S Dual Max (20in) costs roughly $842 a year to charge at home in Oklahoma, against roughly $2,403 a year for an equivalent gas car. That's a savings of about $1,561 a year.

What one full charge costs

Covering the 2026 Rivian R1S Dual Max (20in)'s EPA-rated 380-mile range takes about 159.5 kWh, which costs about $21.32 at Oklahoma's residential rate — figured from the EPA's own combined range and consumption numbers, not the pack's nameplate capacity.

2026 Rivian R1S Dual Max (20in) in Oklahoma, ranked

This combination ranks 7,486 of 20,400 state/model pairs for cost savings against gas (1 is cheapest). The Rivian R1S Dual Max (20in) alone ranks 298 of 400 models for efficiency; Oklahoma alone ranks 5 of 51 states for electricity price.

Before you install a home charger in Oklahoma

The numbers above assume Level 2 home charging is already in place — the electrical work behind that is a real, separate cost that varies by panel, wiring, and local labor rates, not something this page's per-mile math includes.

Get quotes from local electricians for Level 2 charger installation in Oklahoma before deciding.

Where these figures come from

The methodology guide names the exact EIA and EPA tables behind this page's numbers. 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.