State data
Illinois electricity and gas prices
Illinois's average residential electricity rate is 15.6¢/kWh,below the national average by 2%. Gasoline averages $3.55/gallon, above the national average by 9%. That ranks Illinois #36 of 51 for cheapest electricity.
Data last updated: 2026-01-01. Sources: U.S. Energy Information Administration (EIA), state average residential electricity price; AAA, state average regular gasoline price.
Electricity rate
15.6¢/kWh
Gasoline price
$3.55/gal
Example: 12,000 miles a year in Illinois
A gas car at 28 MPG driving 12,000 miles a year in Illinois spends about $1,521 on gasoline. An EV at 3.5 mi/kWh charging at home over the same distance spends about $535 on electricity — a difference of $987 a year.
Run your own numbers for Illinois in the full calculator →
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