Data · April 2026 · 304-month history

Illinois Electricity Prices

Illinois's average residential electricity rate stood at 20.47¢/kWh in April 2026. The state pays more than the country as a whole — 6.0% above the 19.32¢ average. The rate is up 12.0% year over year. For a household near the U.S. average of 10,500 kWh a year, that works out to about $2,149 annually — which is what a solar array would aim to cut.

What we measure: Average residential retail price of electricity published by the EIA for the state, in cents per kilowatt-hour — a statewide monthly average, not a personalized utility tariff or the rate any single household pays. EIA publishes state retail-price data on a lag of roughly two to three months; the latest period shown reflects that lag.