2026 Tesla Model 3 Standard RWD: home charging cost in Hawaii

A 2026 Tesla Model 3 Standard RWD draws 24.3 kWh per 100 miles per the EPA; at Hawaii's 45.95¢/kWh residential rate that's $11.17 per 100 miles charged at home, versus $16.02 for a 25.5-mpg gas car covering the same distance. Charging at home is cheaper than gas here: 30.3% less than gas per mile, here specifically.

What a year of driving costs

Driving 15,000 miles a year — fueleconomy.gov's own default assumption — a 2026 Tesla Model 3 Standard RWD charged at home in Hawaii costs about $1,675/year in electricity, against about $2,403/year for the gas-car comparison. That's a savings of about $728 a year.

What one full charge costs

A 2026 Tesla Model 3 Standard RWD needs roughly 78 kWh to reach its EPA-rated 321-mile range, which runs about $35.85 at 45.95¢/kWh in Hawaii.

Where this ranks

This combination ranks 18,428 of 20,400 state/model pairs for cost savings against gas (1 is cheapest). The Tesla Model 3 Standard RWD alone ranks 2 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.

Get quotes from local electricians for Level 2 charger installation in Hawaii before deciding.

Where these figures come from

The methodology guide names the exact EIA and EPA tables behind this page's numbers. Hawaii has some of the highest residential electricity rates in the country — see the guide to why the cost varies so much by state for the full picture.