MidAmerican Energy Co Electricity Rates and Average Bill (Illinois)
Data through August 2026 (the latest month EIA has published) · Updated October 31, 2026
As of August 2026, MidAmerican Energy Co's residential customers in Illinois paid an average effective rate of 16.41¢/kWh with an average monthly bill of $117.98, per EIA Form 861-M data. That rate is 2.9¢ below the Illinois average of 19.32¢/kWh; the U.S. average is 18.16¢/kWh.
Rate trend vs the Illinois average
View this chart as a table (last 12 months)
| Month | Rate (¢/kWh) | Avg bill ($/mo) | Avg usage (kWh/mo) |
|---|---|---|---|
| September 2025 | 11.63 | 74.65 | 642 |
| October 2025 | 8.31 | 54.97 | 661 |
| November 2025 | 7.92 | 37.70 | 476 |
| December 2025 | 4.73 | 35.93 | 760 |
| January 2026 | 8.83 | 78.24 | 886 |
| February 2026 | 6.58 | 45.03 | 685 |
| March 2026 | 8.55 | 54.92 | 642 |
| April 2026 | 12.84 | 61.39 | 478 |
| May 2026 | 10.46 | 59.88 | 572 |
| June 2026 | 10.71 | 91.65 | 856 |
| July 2026 | 10.07 | 141.61 | 1407 |
| August 2026 | 16.41 | 117.98 | 719 |
MidAmerican Energy Co vs Illinois vs the U.S.
| MidAmerican Energy Co | Illinois | U.S. average | |
|---|---|---|---|
| Rate (August 2026) | 16.41¢/kWh | 19.32¢/kWh | 18.16¢/kWh |
| Average monthly bill | $117.98 | $171.18 | $209.23 |
| Average monthly usage | 719 kWh | 886 kWh | 1152 kWh |
| Rate change, 1 year | +19.4% | +7.2% | +3.4% |
Estimate a bill at MidAmerican Energy Co rates
Worked example: 1,000 kWh at MidAmerican Energy Co's average effective rate of 16.41¢/kWh is about $164.10. The utility's actual average usage is 719 kWh/month, which produces the $117.98 average bill. This is an all-in average (energy, delivery, fixed charges, riders); your tariff's marginal price will differ.
See the full Illinois rate trend, look up another utility by ZIP code, or read why electric bills are rising.
Source: EIA Form 861-M (monthly utility-level sales to ultimate customers, residential), published with roughly a two-month lag. Rate = revenue ÷ sales; bill = revenue ÷ customers. Months failing basic sanity screens are excluded. See methodology.