Illinois Electricity Rates and Average Bill
Data through July 2026 (the latest month EIA has published) · Updated October 13, 2026
As of July 2026, the average residential electricity rate in Illinois is 19.22¢/kWh (the 17th-highest in the U.S.) and the average monthly bill is $193.07, per EIA data. That rate is 0.9¢ above the U.S. average of 18.31¢/kWh.
Rate trend, last three years
View this chart as a table (last 12 months)
| Month | Rate (¢/kWh) | Avg bill ($/mo) | Avg usage (kWh/mo) |
|---|---|---|---|
| August 2025 | 18.06 | 163.36 | 905 |
| September 2025 | 19.05 | 125.23 | 657 |
| October 2025 | 18.74 | 107.98 | 576 |
| November 2025 | 18.31 | 105.46 | 576 |
| December 2025 | 17.07 | 131.23 | 769 |
| January 2026 | 16.36 | 132.88 | 812 |
| February 2026 | 17.83 | 128.25 | 719 |
| March 2026 | 18.86 | 115.24 | 611 |
| April 2026 | 20.47 | 110.07 | 538 |
| May 2026 | 23.85 | 122.65 | 514 |
| June 2026 | 19.89 | 142.84 | 718 |
| July 2026 | 19.22 | 193.07 | 1005 |
Illinois vs the U.S. average
| Illinois | U.S. average | |
|---|---|---|
| Rate (July 2026) | 19.22¢/kWh | 18.31¢/kWh |
| Average monthly bill | $193.07 | $212.44 |
| Average monthly usage | 1005 kWh | 1160 kWh |
| Rate change, 1 year | +11.6% | +4.9% |
| Rate change, 5 years | +51.6% | +32.4% |
Illinois's average residential rate of 19.22¢/kWh for July 2026 ranks 35th of 51 (1 = lowest). Over the past year the rate moved +11.6% (Illinois) versus +4.9% nationally; over five years, +51.6% versus +32.4% nationally. Average usage of 1005 kWh/month compares with 1160 kWh nationally, which is why the bill and rate ranks can differ. For how Illinois's recent increase ranks against every other state (12-month, 3-year and 5-year changes), see electricity rate increases by state.
Largest utilities in Illinois
Average effective rates and bills for Illinois's largest utilities, from EIA Form 861-M (July 2026). Or find yours by ZIP code.
| Utility | Rate (¢/kWh) | Avg bill ($/mo) | Avg usage (kWh/mo) | Residential customers |
|---|---|---|---|---|
| Commonwealth Edison Co | 19.64 | 169.72 | 864 | 3,054,843 |
| Ameren Illinois Company | 19.47 | 232.34 | 1,193 | 642,913 |
| MidAmerican Energy Co | 10.07 | 141.61 | 1,407 | 73,383 |
Average bill = rate × average usage. Utilities with similar rates can show very different average bills because their customers' average usage differs (housing mix, heating fuel, climate).
Estimate a bill at Illinois rates
Worked example: 1,000 kWh at Illinois's average rate of 19.22¢/kWh is about $192.20. The state's actual average usage is 1005 kWh/month, which is what produces the $193.07 average bill. These are average effective rates including all charges; your utility's tariff will differ.
Wondering what's behind rising rates nationally? See Why is my electric bill so high?, our data-led explainer on demand growth, data centers, and grid costs. Also: Illinois gas prices and why they are what they are, and the cheapest way to heat a home by fuel and state.
Source: EIA retail sales data (residential sector, monthly), published with roughly a two-month lag. Rate = revenue ÷ sales; bill = revenue ÷ customers. We do not project unpublished months. See methodology.