Oklahoma home charging cost for the 2027 Rivian R1S Quad (20in AT)

A 2027 Rivian R1S Quad (20in AT) draws 50.1 kWh per 100 miles per the EPA; at Oklahoma's 13.37¢/kWh residential rate that's $6.7 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: 58.2% less than gas per mile, here specifically.

What a year of driving costs

At fueleconomy.gov's default of 15,000 annual miles, the 2027 Rivian R1S Quad (20in AT) costs roughly $1,005 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 $1,398 a year.

Cost of a full charge

Covering the 2027 Rivian R1S Quad (20in AT)'s EPA-rated 325-mile range takes about 162.8 kWh, which costs about $21.77 at Oklahoma's residential rate — figured from the EPA's own combined range and consumption numbers, not the pack's nameplate capacity.

How this compares nationally

This combination ranks 12,167 of 20,400 state/model pairs for cost savings against gas (1 is cheapest). The Rivian R1S Quad (20in AT) alone ranks 390 of 400 models for efficiency; Oklahoma alone ranks 5 of 51 states for electricity price.

Getting set up to charge a 2027 Rivian R1S Quad (20in AT) at home

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.

Line up a few Oklahoma electrician quotes for Level 2 install before you commit either way.

Where these figures come from

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.