2026 Rivian R1S Quad Max (20in AT), HI Charging Cost
Hawaii home charging cost for the 2026 Rivian R1S Quad Max (20in AT)
A 2026 Rivian R1S Quad Max (20in AT) draws 50.1 kWh per 100 miles per the EPA; at Hawaii's 45.95¢/kWh residential rate that's $23.02 per 100 miles charged at home, versus $16.02 for a 25.5-mpg gas car covering the same distance. This model costs more to charge at home than gas would here: 43.7% more than gas per mile here, not less, the arithmetic isn't clamped to always favor charging.
2026 Rivian R1S Quad Max (20in AT): yearly cost in Hawaii
At fueleconomy.gov's default of 15,000 annual miles, the 2026 Rivian R1S Quad Max (20in AT) costs roughly $3,453 a year to charge at home in Hawaii, against roughly $2,403 a year for an equivalent gas car. That's about $1,050 MORE a year than the gas comparison, not less.
What one full charge costs
Covering the 2026 Rivian R1S Quad Max (20in AT)'s EPA-rated 325-mile range takes about 162.8 kWh, which costs about $74.82 at Hawaii's residential rate, figured from the EPA's own combined range and consumption numbers, not the pack's nameplate capacity.
Where this ranks
This combination ranks 20,391 of 20,400 state/model pairs for cost savings against gas (1 is cheapest). The Rivian R1S Quad Max (20in AT) alone ranks 392 of 400 models for efficiency; Hawaii alone ranks 51 of 51 states for electricity price.
Getting set up to charge a 2026 Rivian R1S Quad Max (20in AT) at home
The numbers above assume Level 2 home charging is already in place, the electrical work behind that is a real, separate cost that varies by panel, wiring, and local labor rates, not something this page's per-mile math includes.
Get quotes from local electricians for Level 2 charger installation in Hawaii before deciding.
Where these figures come from
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.