Charging a 2026 Rivian R1S All-Terrain Dual Max (20in) at home in Hawaii

A 2026 Rivian R1S All-Terrain Dual Max (20in) draws 43.2 kWh per 100 miles per the EPA; at Hawaii's 45.95¢/kWh residential rate that's $19.86 per 100 miles charged at home, versus $16.02 for a 25.5-mpg gas car covering the same distance. Here the math runs the other way: 24% more per mile than gasoline, because Hawaii's rate and this model's efficiency combine unfavorably.

2026 Rivian R1S All-Terrain Dual Max (20in): yearly cost in Hawaii

Hawaii owners putting 15,000 annual miles on a 2026 Rivian R1S All-Terrain Dual Max (20in) spend about $2,979 on home electricity, compared to about $2,403 a gas-car equivalent would spend on fuel. At this mileage, that's roughly $576 a year worse than the gas comparison.

What one full charge costs

At Hawaii's rate, fully covering this 2026 Rivian R1S All-Terrain Dual Max (20in)'s 370-mile EPA range costs about $73.49 (159.9 kWh) — the energy the EPA test actually used, not the battery's rated size.

How this compares nationally

Among all 20,400 state-and-model combinations this site tracks, charging a 2026 Rivian R1S All-Terrain Dual Max (20in) in Hawaii ranks 20,323 for cost savings versus gas — 1 being the best deal nationally. Separately, the Rivian R1S All-Terrain Dual Max (20in) ranks 333 of 400 EV models for raw efficiency, and Hawaii ranks 51 of 51 for cheapest residential electricity.

Next step: home charger installation

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.

Ask a licensed Hawaii electrician to quote the install before this math becomes a real decision.

More on how this number was built

See the methodology guide for exactly which EIA and EPA figures feed 2026 Rivian R1S All-Terrain Dual Max (20in)'s cost in Hawaii. This is one of the combinations where charging costs more than gas — the guide to when that happens explains why the arithmetic can go either way.