Illinois electric rates and bill calculators
In November 2026, 1,000 kWh costs $176.29 on Ameren Illinois (Schedule DS-1), before sales tax. That is 17.6¢ per kWh with all the charges of the tariff. Select your utility to calculate your own bill. Each calculator uses the tariff of the utility. The Illinois Commerce Commission (ICC) approves the tariffs of the investor-owned utilities. A city or public power utility gets its prices approved by its own board.
- 2 utilities
- Average bill in 2025: $126.59 a month
- Rates checked October 16, 2026
Utilities in Illinois
What 1,000 kWh costs in Illinois (November 2026)
The same bill on the tariff of each utility: 1,000 kWh in a 30-day November billing period, before sales tax. Compare all 92 utilities.
| Utility | 1,000 kWh | Per kWh | Change from October |
|---|---|---|---|
| Ameren IllinoisSchedule DS-1 · non-summer rates · Rate Zone I | $176.29 | 17.63¢ | $0.00 |
See all Illinois electric utilities with their average bills, including the ones without a calculator on this site yet.
Help paying the bill: Ameren Illinois bill help.
Cities: electricity in Chicago, electricity in Aurora, electricity in Batavia, electricity in Belvidere, electricity in Bloomington, electricity in Champaign, electricity in Cicero, electricity in Crystal Lake, electricity in Danville, electricity in DeKalb, electricity in Decatur, electricity in Elgin, electricity in Galesburg, electricity in Joliet, electricity in Naperville, electricity in Pekin, electricity in Peoria, electricity in Quincy, electricity in Rockford, electricity in Springfield, electricity in Tinley Park, electricity in Waukegan, electricity in Wheaton.
Average electric bill in Illinois
In 2025, the average home in Illinois used 716 kWh a month and paid $126.59 a month (17.7¢ per kWh). The U.S. average was $150.68 (874 kWh, 17.2¢ per kWh). These are yearly averages from the EIA-861 data of the U.S. Energy Information Administration. See the average electric bill in Illinois by utility and by month, the average bill in each state, the average bill of an apartment, business electricity rates in Illinois and natural gas bills in Illinois. To turn watts or kWh into dollars at the Illinois price, use the electricity cost calculator.
| Utility | Homes | kWh a month | Price per kWh | Average bill |
|---|---|---|---|---|
| Ameren Illinois | 587,659 | 888 | 16.7¢ | $148.32 |
| ComEd | 3,020,130 | 606 | 17.7¢ | $107.32 |
The average bill is different from the 1,000 kWh bill above: it uses the real average kWh of each utility's homes and the rates of 2025.
Pages for each Illinois utility
| Utility | Pages |
|---|---|
| Ameren Illinois | Rates and bill calculator · Price to compare history |
| ComEd | Rates and bill calculator · Price to compare history |
How electricity prices work in Illinois
- Your address decides your utility. The tariff of that utility gives the price of each kWh and the monthly charges. In Illinois, the tariffs are approved by different bodies: see the questions below.
- Supply. In Illinois, some homes can buy the supply part of the bill from another company. The default supply price of the utility is the price to compare: Ameren Illinois price to compare (10.441¢ now), ComEd price to compare (10.103¢ now). Compare them on one page: Illinois price to compare by utility. See all utilities.
- Tiers. Ameren Illinois charges a different price for the kWh above a limit, so a month with more kWh has a different average price.
- Not in the calculations. Sales tax, city fees and discount programs are not in the tables on this page. The calculator of each utility shows them where the tariff gives them.
What is the average electric bill in Illinois?
In 2025, the average home in Illinois used 716 kWh a month and paid $126.59 a month, 17.7¢ per kWh, from the EIA-861 data of the U.S. Energy Information Administration. The U.S. average was $150.68 (874 kWh, 17.2¢ per kWh). Your own bill depends on your utility and your kWh.
How much is a 1,000 kWh electric bill in Illinois?
In November 2026, 1,000 kWh costs $176.29 on Ameren Illinois (Schedule DS-1), before sales tax. That is 17.6¢ per kWh with all the charges of the tariff. The bill is for a 30-day billing period at the standard residential rate of each utility.
Who sets electric rates in Illinois?
The Illinois Commerce Commission approves the rates of ComEd. The Illinois Commerce Commission (ICC) approves the rates of Ameren Illinois. Each calculator on this site uses the approved tariff of the utility.
This list shows only the utilities with checked tariffs. Some homes in Illinois get electricity from an electric cooperative or a city utility. We do not have these tariffs yet. Send the name of your utility to contactus@utilityratecalc.com.
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No account needed: all rate changes (RSS feed) · a monthly reminder for your calendar · save your bills in this browser. Each month, the bill comparison shows what 1,000 kWh costs at every utility.
State regulator: Illinois Commerce Commission (ICC).