How much does it cost to charge a Rivian R1S in Texas?

Texas' 12-month average rate, 16.0¢/kWh, is 11% below the U.S. average of 18.0¢/kWh, which saves $0.88 per 100 miles compared with the national rate.

Rates in Texas are rising: the latest 12-month average is 4.8% higher than in the 12 months before.

Over the last 24 months Texas was cheapest in winter and most expensive in spring: January 2025 at 14.6¢/kWh and April 2026 at 17.0¢/kWh, which moves the Rivian R1S's monthly charging cost between $64 and $74. The latest published month, August 2026, came in at 15.9¢/kWh, in line with the 12-month average.

Of the 5 states covered so far, Texas ranks 3rd cheapest for the Rivian R1S. It costs least in Washington ($6.09 per 100 miles) and most in California ($13.86).

Among the 10 EVs on OutletBill, the Rivian R1S is the 10th cheapest to charge per mile in Texas, the most expensive we track; the Tesla Model 3 costs $3.88 per 100 miles here.

Of the 3 standard SUVs on OutletBill, the Rivian R1S costs the most to charge in Texas; the Honda Prologue does the same 100 miles for $5.20.

At 42.9 kWh per 100 miles, the 2026 Rivian R1S Dual Standard (20-in) is among the least efficient EVs EPA has rated for 2026: 80% of the 321 versions tested use less energy.

EPA rates the 2026 R1S Dual Standard (20-in) at the same efficiency as the 2025 version, 42.9 kWh per 100 miles, with the same 258-mile range.

Across all 25 trims of the 2026 R1S, cost per 100 miles in Texas ranges from $6.31 for the Dual Large (22-in) to $8.01 for the Quad Max (20-in AT), a difference of $207 a year at 1,016 miles a month.

EPA estimates 9.5 hours to charge the R1S Dual Standard (20-in) from empty on a 240-volt Level 2 home charger, longer than a typical night, though a full charge is rarely needed. At 1,016 miles a month (about 33 miles a day), a day's driving takes roughly 1 hour on a Level 2 charger.

Electricity would have to cost more than 35.6¢/kWh, 2.2 times Texas' rate, before the Rivian R1S cost more per mile than the 2027 BMW X5 40 xDrive. Put the other way, gas would have to fall below $1.78 a gallon.

Gas costs use EIA's Texas retail average for premium gasoline ($3.97 a gallon over the same 12 months, 13% below the U.S. average of $4.58) and the 2027 BMW X5 40 xDrive's EPA rating of 26 mpg combined. EPA lists premium fuel for the 2027 BMW X5 40 xDrive, so the comparison uses premium prices.