Charging a 2026 Rivian R1T Dual Large (20in) at home in Hawaii

In Hawaii, home electricity runs 45.95¢/kWh — put a 2026 Rivian R1T Dual Large (20in)'s EPA-rated 42.9 kWh/100mi against that and 100 miles costs $19.7, versus $16.02 for a gas car averaging 25.5 mpg. Here the math runs the other way: 23% more per mile than gasoline, because Hawaii's rate and this model's efficiency combine unfavorably.

Annual cost, at 15 thousands miles a year

Hawaii owners putting 15,000 annual miles on a 2026 Rivian R1T Dual Large (20in) spend about $2,955 on home electricity, compared to about $2,403 a gas-car equivalent would spend on fuel. At this mileage, that's roughly $552 a year worse than the gas comparison.

What one full charge costs

At Hawaii's rate, fully covering this 2026 Rivian R1T Dual Large (20in)'s 300-mile EPA range costs about $59.1 (128.6 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 R1T Dual Large (20in) in Hawaii ranks 20,306 for cost savings versus gas — 1 being the best deal nationally. Separately, the Rivian R1T Dual Large (20in) ranks 318 of 400 EV models for raw efficiency, and Hawaii ranks 51 of 51 for cheapest residential electricity.

Before you install a home charger in Hawaii

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

Every figure on this page traces to a named EIA or EPA dataset — see the methodology guide. 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.