Illinois data centers and electricity bills
Illinois ranks 49th of 51 on commercial sales growth and 50th on the amount added (-2.9 TWh). Over the same years the Illinois home price moved +36%, from 13.03 to 17.69 cents per kWh. Data centers are only part of Illinois commercial sales, and none of this shows cause.
Illinois commercial sales by year
Illinois commercial sales rose fastest in 2021, up 3.2% on 2020. Commercial customers are 34% of Illinois electricity sales in 2025.
Illinois commercial sales, GWh
- 50,320'15
- 50,910'16
- 49,988'17
- 50,763'18
- 49,279'19
- 45,487'20
- 46,923'21
- 47,120'22
- 45,576'23
- 45,240'24
- 46,349'25
Illinois sales and prices, 2015 to 2025
| Year | GWh | Change | Home ¢ | Business ¢ |
|---|---|---|---|---|
| 2015 | 50,320 | — | 12.50 | 9.02 |
| 2016 | 50,910 | +1.2% | 12.54 | 9.02 |
| 2017 | 49,988 | -1.8% | 12.95 | 9.09 |
| 2018 | 50,763 | +1.6% | 12.77 | 9.12 |
| 2019 | 49,279 | -2.9% | 13.03 | 9.08 |
| 2020 | 45,487 | -7.7% | 13.04 | 9.15 |
| 2021 | 46,923 | +3.2% | 13.18 | 9.65 |
| 2022 | 47,120 | +0.4% | 15.65 | 11.32 |
| 2023 | 45,576 | -3.3% | 15.71 | 11.24 |
| 2024 | 45,240 | -0.7% | 15.87 | 11.81 |
| 2025 | 46,349 | +2.5% | 17.69 | 13.07 |
Where Illinois stands
| Measure | Illinois | Rank |
|---|---|---|
| Commercial sales growth 2019-2025 | -5.9% | 49 of 51 |
| Commercial sales added | -2.93 TWh | 50 of 51 |
| Commercial share of sales 2025 | 34.4% | 33 of 51 |
| Home price change 2019-2025 | +35.8% | 13 of 51 |
Large-load tariffs on file for Illinois
Illinois: 1 entry on the EEI list (trade group, Sept 2026).
| Utility and tariff | Docket | Date |
|---|---|---|
| ComEd Rider DE / terms revisions in Illinois | 25-0679/25-0677 | see source |
States near Illinois on commercial growth
- New York
- Maryland
- Connecticut
- Hawaii
- District of Columbia
Keep going
Sources
EIA Illinois sales and prices (CSV); EEI Illinois tariffs. Nominal prices.
Questions
Did data centers raise Illinois electricity bills?
This page cannot say. While the Illinois home price moved +36%, Illinois commercial sales fell 6% (2019-2025); fuel, wires and rate cases in Illinois also move prices.
How fast is Illinois commercial electricity use growing?
Illinois commercial sales grew -5.9% between 2019 and 2025, 49th among 51 places, and added -2.93 TWh.
Is Illinois data-center load published?
No open source gives Illinois data-center load alone, so Illinois commercial sales stand in as a proxy.