Rivian 2026 R1S Tri Max
At Delaware energy prices this vehicle costs $8.60 per 100 miles.
Computed from electricity at 19.29¢/kWh, the EIA average for DE in June 2026. A kilowatt-hour is 3412 BTU. This is a rate times a rating, not a prediction of your bill.
Against the alternatives, per 100 miles
This car and the median are priced at Delaware electricity prices. The petrol row is against a 30 mpg petrol car at this week’s US regular price, $4.32 a gallon in EIA’s survey for the week of September 14, 2026; the mpg is our assumption, stated so you can change it. Lower is cheaper to run; it says nothing about what the car costs to buy.
What the register says
| Rating | 44.57 kWh/100mi |
|---|---|
| Consumption | 44.6 kWh per 100 miles |
| Fuel | Electricity |
| EPA range | 371 miles |
| Charge time on 240 V | 15.0 hours |
Priced in your state
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Other model years
Other Rivian electric cars
The nearest by kWh/100mi rating.
- 2027 R1S Performance 44.57 kWh/100mi
- 2027 R1T Performance 44.57 kWh/100mi
- 2025 R1T Tri Max 44.57 kWh/100mi
- 2026 R1T Tri Max 44.57 kWh/100mi
- 2023 R1T 22 inch Dual Large 44.48 kWh/100mi
- 2023 R1T 22 inch Performance Dual Large 44.48 kWh/100mi
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Source: fueleconomy.gov, published by the U.S. Department of Energy and the U.S. EPA. Public domain. Consumption is the EPA’s combined figure; real-world consumption varies with speed, temperature and terrain. This page is a record of a published certification; it is not an endorsement, not a quote, and not advice. Corrections.