District of Columbia home charging cost for the 2027 Hyundai Ioniq 9 RWD

A 2027 Hyundai Ioniq 9 RWD draws 37 kWh per 100 miles per the EPA; at District of Columbia's 24.54¢/kWh residential rate that's $9.08 per 100 miles charged at home, versus $16.02 for a 25.5-mpg gas car covering the same distance. Charging at home is much cheaper than gas here: 43.3% less than gas per mile, here specifically.

2027 Hyundai Ioniq 9 RWD: yearly cost in District of Columbia

At fueleconomy.gov's default of 15,000 annual miles, the 2027 Hyundai Ioniq 9 RWD costs roughly $1,362 a year to charge at home in District of Columbia, against roughly $2,403 a year for an equivalent gas car. That's a savings of about $1,041 a year.

What one full charge costs

Covering the 2027 Hyundai Ioniq 9 RWD's EPA-rated 335-mile range takes about 124 kWh, which costs about $30.42 at District of Columbia'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 16,471 of 20,400 state/model pairs for cost savings against gas (1 is cheapest). The Hyundai Ioniq 9 RWD alone ranks 193 of 400 models for efficiency; District of Columbia alone ranks 42 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.

Ask a licensed District of Columbia electrician to quote the install before this math becomes a real decision.

Where these figures come from

Every figure on this page traces to a named EIA or EPA dataset — see the methodology guide. At 24.54¢/kWh, District of Columbia sits in the middle of the national range — the guide to why charging cost varies by state shows where.