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.