States › Illinois › March 2026
Illinois electricity prices, March 2026
Average price, sales and bills for the month against the same month a year earlier and the US. Preliminary
In March 2026, residential customers in Illinois paid an average of 18.86¢ per kilowatthour, up 7.5% on the same month a year earlier (17.55¢). The US average for the month was 18.56¢; Illinois was about the same as that. It ranked 16th highest among the 50 states and the District of Columbia.
Residential sales were 3,312,206 MWh, little changed on a year earlier, and the average residential bill for the month was $115.24 on 611 kWh. Weather moves monthly sales far more than prices do, so bills swing with the season.
EIA marks this month as preliminary. Preliminary months come from the Form EIA-861M sample and are revised when the annual census is complete.
Average price is revenue divided by sales for the sector and year; it is not a tariff rate. Reliability figures are as reported by utilities to EIA on Form 861 and may use different calculation methods. Monthly figures come from the Form EIA-861M sample and are revised when EIA finalises the year.
Price by sector
| Sector | Mar 2026 | Mar 2025 | Change | US, Mar 2026 |
|---|---|---|---|---|
| Residential | 18.86¢ | 17.55¢ | +7.5% | 18.56¢ |
| Commercial | 13.07¢ | 13.10¢ | -0.2% | 13.92¢ |
| Industrial | 9.19¢ | 10.64¢ | -13.6% | 8.58¢ |
| All sectors | 13.59¢ | 13.71¢ | -0.9% | 14.08¢ |
Sales and customers
| Measure | Mar 2026 | Mar 2025 | Change |
|---|---|---|---|
| Residential sales | 3.3 TWh | 3.3 TWh | -0.6% |
| Sales, all sectors | 10.6 TWh | 10.5 TWh | +0.6% |
| Residential customers | 5,419,810 | 5,360,640 | +1.1% |
| Average residential bill | $115.24 | $109.15 | +5.6% |
| Average residential use, kWh | 611 | 622 | -1.8% |
| US residential price | 18.56¢ | 17.09¢ | +8.6% |
The two years to March 2026
Illinois residentialUS residential
Questions and answers
What was the average electricity price in Illinois in March 2026?
18.86¢ per kilowatthour for residential customers, 13.07¢ for commercial and 9.19¢ for industrial customers. EIA marks the month as preliminary.
How does that compare with a year earlier?
The residential average was 17.55¢ in March 2025, a change of +7.5%. Residential sales changed by -0.6% over the same period.
What was the average residential bill that month?
$115.24, on average use of 611 kWh. This is residential revenue divided by residential customers for the month.
Provenance
Source: U.S. Energy Information Administration, Form EIA-861M sales and revenue workbook (state by sector and month), status "Preliminary" for this month, series published through July 2026. Public domain. Price = revenue ÷ sales; bill = residential revenue ÷ residential customers. Utility-level annual figures are on the Illinois page.