Hawaii home charging cost for the 2027 Rivian R1S Performance (20in)

In Hawaii, home electricity runs 45.95¢/kWh — put a 2027 Rivian R1S Performance (20in)'s EPA-rated 47 kWh/100mi against that and 100 miles costs $21.59, versus $16.02 for a gas car averaging 25.5 mpg. This model costs more to charge at home than gas would here: 34.8% more than gas per mile here, not less — the arithmetic isn't clamped to always favor charging.

2027 Rivian R1S Performance (20in): yearly cost in Hawaii

At fueleconomy.gov's default of 15,000 annual miles, the 2027 Rivian R1S Performance (20in) costs roughly $3,239 a year to charge at home in Hawaii, against roughly $2,403 a year for an equivalent gas car. That's about $836 MORE a year than the gas comparison, not less.

Filling up the 2027 Rivian R1S Performance (20in), in dollars

Covering the 2027 Rivian R1S Performance (20in)'s EPA-rated 348-mile range takes about 163.5 kWh, which costs about $75.14 at Hawaii's residential rate — figured from the EPA's own combined range and consumption numbers, not the pack's nameplate capacity.

How this compares nationally

This combination ranks 20,362 of 20,400 state/model pairs for cost savings against gas (1 is cheapest). The Rivian R1S Performance (20in) alone ranks 369 of 400 models for efficiency; Hawaii alone ranks 51 of 51 states for electricity price.

Before you install a home charger in Hawaii

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.

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

Where these figures come from

The methodology guide names the exact EIA and EPA tables behind this page's numbers. 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.