The average home electricity bill in Illinois is $110 per month — that's 23% below the U.S. average of $142, the 45th least expensive of 51 states.
| Illinois average | $110 per month |
|---|---|
| U.S. average | $142 per month |
| Difference | −23% (−$32/yr) |
| Rank (most expensive) | 45th of 51 |
Illinois ranks 45th of 51 for electricity bill cost. It stays lower thanks to lower local rates and milder year-round demand. Your own bill still depends on your home size, your usage, and which providers serve your address — so it pays to know where your state stands before you call to negotiate.
Your state's full breakdown plus the easiest ways to lower your bill. Free, no obligation.
The levers that move your bill the most: switching to a cheaper plan if your state is deregulated; a smart thermostat and sealing air leaks; running big appliances during off-peak hours; LED bulbs and high-efficiency appliances. Most cost little or nothing to start, and they stack — knock out two or three and the monthly savings add up fast.
Get the Free Illinois Electricity Bill Report →The average home electricity bill in Illinois is about $110 per month as of 2026 — 23% below the national average of $142 per month. Your actual bill depends on your home, your usage, and which providers serve your address.
Illinois ranks 45th out of 51 for electricity bill cost. Bills run lower thanks to lower local rates and milder year-round demand.
The fastest levers: switching to a cheaper plan if your state is deregulated, a smart thermostat and sealing air leaks, running big appliances during off-peak hours. Most of these cost little or nothing to start.