Cost to Charge a Rivian R1S in Hawaii

$87.54 for a full charge at 52.72¢/kWh — $23.41 per 100 miles, about $2,809 a year.

Rivian R1S in Hawaii

$87.54 for a full charge

Per 100 miles: $23.41
Per mile: $0.23
Per year: $2,809
vs petrol / yr: -$1,175

Electricity per year
Petrol per year

The full picture

Charging cost breakdown for a Rivian R1S
Item	Energy	Cost
This charge	166.1 kWh	$87.54
Full charge (0–100%)	166.1 kWh	$87.54
Per 100 miles	44.4 kWh	$23.41
Per year (12,000 mi)	5328.0 kWh	$2,809
Same year on petrol (30 mpg)	—	$1,634
Difference	—	-$1,175

What charging actually costs here

Filling a Rivian R1S from empty in Hawaii costs $87.54. The car draws 166.1 kWh from the wall for a full 374-mile charge, and Hawaii residential electricity averages 52.72¢ per kWh. That works out at $23.41 per 100 miles, or $0.23 a mile.

Hawaii is more expensive than average: 52.72¢ against a national mean of 19.42¢, which ranks it 51 of 51 for electricity price. The same car costs $21.77 to fill in Nevada and $87.54 in Hawaii — a 4.0× spread across the country for identical driving.

This is one of the few places where the sum does not favour electricity. At 52.72¢ per kWh, running the Rivian R1S costs $23.41 per 100 miles while a 30 mpg petrol car costs $13.62 — so over 12,000 miles you would spend about $1,175 more on electricity. Home solar or an off-peak tariff changes that quickly, but the flat residential rate does not.

Similar EVs in Hawaii

Charging cost of comparable EVs in Hawaii
Vehicle	Per 100 mi	Full charge	Per year
Rivian R1T	44.4 kWh	$87.54	$2,809
Kia EV9	43 kWh	$58.94	$2,720
Tesla Cybertruck	42.9 kWh	$73.50	$2,714
Chevrolet Silverado EV	47.8 kWh	$106.85	$3,024
Kia EV6	41 kWh	$49.93	$2,594
Volkswagen ID. Buzz	40.8 kWh	$50.33	$2,581

The same car in nearby-priced states

Charging a Rivian R1S in states with similar electricity prices
State	¢/kWh	Full charge	Per year
Maine	29.59	$49.14	$1,577
Massachusetts	29.61	$49.17	$1,578
California	34.74	$57.69	$1,851

Frequently asked questions

How much does it cost to charge a Rivian R1S in Hawaii?

$87.54 for a full charge from empty. The car needs 166.1 kWh at the wall and Hawaii residential electricity averages 52.72¢ per kWh.

How much does a Rivian R1S cost per mile in Hawaii?

About $0.23 a mile, or $23.41 per 100 miles. Over 12,000 miles a year that is roughly $2,809 of electricity.

Is charging a Rivian R1S cheaper than petrol in Hawaii?

Not at the flat residential rate. Electricity costs $23.41 per 100 miles here against $13.62 for a 30 mpg petrol car, so you would spend roughly $1,175 more a year. Hawaii has the kind of electricity prices where an off-peak tariff or solar makes the difference.

How long does a full charge last?

The EPA rates the Rivian R1S at 374 miles combined. Cold weather, motorway speeds and a loaded car all reduce that; the EPA number is a standardised test, not a guarantee.

Does this include charging losses?

Yes. The EPA's 44.4 kWh/100 mi figure is measured at the wall socket, so the energy lost in the charger and cabling is already in the number. No extra efficiency factor is applied.

Vehicle data: EPA fueleconomy.gov, model years 2025-2027. Electricity: EIA Electric Power Monthly Table 5.6.A, residential, June 2026. Petrol: EIA weekly retail gasoline price, 24 August 2026.

Estimates for informational purposes only. Real charging cost depends on your tariff, time of use, charger efficiency, temperature, driving style and state of charge. EPA figures are a standardised test result, not a promise about your car.