2026 Rivian R1S Quad Max (20in AT): home charging cost in Texas

A 2026 Rivian R1S Quad Max (20in AT) draws 50.1 kWh per 100 miles per the EPA; at Texas's 16.11¢/kWh residential rate that's $8.07 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: 49.6% less than gas per mile, here specifically.

Annual cost, at 15 thousands miles a year

Driving 15,000 miles a year — fueleconomy.gov's own default assumption — a 2026 Rivian R1S Quad Max (20in AT) charged at home in Texas costs about $1,211/year in electricity, against about $2,403/year for the gas-car comparison. That's a savings of about $1,192 a year.

Filling up the 2026 Rivian R1S Quad Max (20in AT), in dollars

A 2026 Rivian R1S Quad Max (20in AT) needs roughly 162.8 kWh to reach its EPA-rated 325-mile range, which runs about $26.23 at 16.11¢/kWh in Texas.

Where this ranks

This combination ranks 15,198 of 20,400 state/model pairs for cost savings against gas (1 is cheapest). The Rivian R1S Quad Max (20in AT) alone ranks 392 of 400 models for efficiency; Texas alone ranks 28 of 51 states for electricity price.

Next step: home charger installation

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 Texas before deciding.

Where these figures come from

The methodology guide names the exact EIA and EPA tables behind this page's numbers. Texas's 16.11¢/kWh rate ranks 28 of 51 states; the state rate guide lays out the full spread.