Union Electric Co Electricity Rates and Average Bill (Missouri)
Data through August 2026 (the latest month EIA has published) · Updated October 31, 2026
As of August 2026, Union Electric Co's residential customers in Missouri paid an average effective rate of 18.46¢/kWh with an average monthly bill of $231.81, per EIA Form 861-M data. That rate is 2.4¢ above the Missouri average of 16.02¢/kWh; the U.S. average is 18.16¢/kWh.
Rate trend vs the Missouri average
View this chart as a table (last 12 months)
| Month | Rate (¢/kWh) | Avg bill ($/mo) | Avg usage (kWh/mo) |
|---|---|---|---|
| September 2025 | 18.41 | 171.01 | 929 |
| October 2025 | 11.87 | 87.79 | 739 |
| November 2025 | 12.24 | 103.05 | 842 |
| December 2025 | 10.71 | 130.29 | 1216 |
| January 2026 | 10.42 | 146.25 | 1404 |
| February 2026 | 10.78 | 108.37 | 1005 |
| March 2026 | 12.16 | 102.81 | 845 |
| April 2026 | 12.87 | 88.69 | 689 |
| May 2026 | 12.69 | 96.95 | 764 |
| June 2026 | 18.06 | 195.92 | 1085 |
| July 2026 | 18.34 | 249.06 | 1358 |
| August 2026 | 18.46 | 231.81 | 1256 |
Union Electric Co vs Missouri vs the U.S.
| Union Electric Co | Missouri | U.S. average | |
|---|---|---|---|
| Rate (August 2026) | 18.46¢/kWh | 16.02¢/kWh | 18.16¢/kWh |
| Average monthly bill | $231.81 | $215.88 | $209.23 |
| Average monthly usage | 1256 kWh | 1347 kWh | 1152 kWh |
| Rate change, 1 year | +2.8% | +4.6% | +3.4% |
Estimate a bill at Union Electric Co rates
Worked example: 1,000 kWh at Union Electric Co's average effective rate of 18.46¢/kWh is about $184.60. The utility's actual average usage is 1256 kWh/month, which produces the $231.81 average bill. This is an all-in average (energy, delivery, fixed charges, riders); your tariff's marginal price will differ.
See the full Missouri 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.