Charging a 2026 Rivian R1S Tri Max (22in) at home in North Dakota

A 2026 Rivian R1S Tri Max (22in) draws 44.6 kWh per 100 miles per the EPA; at North Dakota's 12.19¢/kWh residential rate that's $5.43 per 100 miles charged at home, versus $16.02 for a 25.5-mpg gas car covering the same distance. That works out to 66.1% cheaper per mile than gasoline in North Dakota — charging at home costs a fraction of what gas would here.

What a year of driving costs

North Dakota owners putting 15,000 annual miles on a 2026 Rivian R1S Tri Max (22in) spend about $815 on home electricity, compared to about $2,403 a gas-car equivalent would spend on fuel. Call it about $1,588 saved annually, at this mileage.

What one full charge costs

At North Dakota's rate, fully covering this 2026 Rivian R1S Tri Max (22in)'s 371-mile EPA range costs about $20.16 (165.4 kWh) — the energy the EPA test actually used, not the battery's rated size.

Where this ranks

Among all 20,400 state-and-model combinations this site tracks, charging a 2026 Rivian R1S Tri Max (22in) in North Dakota ranks 6,640 for cost savings versus gas — 1 being the best deal nationally. Separately, the Rivian R1S Tri Max (22in) ranks 356 of 400 EV models for raw efficiency, and North Dakota ranks 1 of 51 for cheapest residential electricity.

Getting set up to charge a 2026 Rivian R1S Tri Max (22in) at home

Everything above is the per-mile and per-year cost once a home charger exists — getting one installed is a separate electrical job whose price depends on your panel and wiring, not the state average used here.

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

More on how this number was built

Every figure on this page traces to a named EIA or EPA dataset — see the methodology guide. North Dakota is one of the cheapest states for home electricity — the guide to why the cost varies so much by state covers what drives that.