2026 Tesla Model 3 Premium RWD: home charging cost in Colorado

At Colorado's residential electricity rate of 16.65¢/kWh, a 2026 Tesla Model 3 Premium RWD (rated 24.6 kWh per 100 miles by the EPA) costs $4.1 to drive 100 miles on home charging, against $16.02 for the same distance in a car averaging 25.5 mpg on gasoline at $4.085/gallon. Charging at home costs a fraction of what gas would here: 74.4% 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 Premium RWD charged at home in Colorado costs about $615/year in electricity, against about $2,403/year for the gas-car comparison. That's a savings of about $1,788 a year.

Filling up the 2026 Tesla Model 3 Premium RWD, in dollars

A 2026 Tesla Model 3 Premium RWD needs roughly 89.4 kWh to reach its EPA-rated 363-mile range, which runs about $14.89 at 16.65¢/kWh in Colorado.

Where this ranks

This combination ranks 1,170 of 20,400 state/model pairs for cost savings against gas (1 is cheapest). The Tesla Model 3 Premium RWD alone ranks 4 of 400 models for efficiency; Colorado alone ranks 30 of 51 states for electricity price.

Next step: home charger installation

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 Colorado 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. At 16.65¢/kWh, Colorado sits in the middle of the national range — the guide to why charging cost varies by state shows where.