13.26¢
per kWh, 2025
[ Ameren Missouri / MO · ER-2026-0291 ]
Ameren Missouri: 10.0% requested for 1,100,654 Missouri homes
PENDING · DECISION MAY 2027 · 227 DAYS
rate increase requested
14.59¢
per kWh if approved
227
days to decision
+28.1%
since 2020
What your bill becomes
Bill today
After the increase
Difference / month · / year
Estimated at Ameren Missouri's average effective residential rate (13.26¢/kWh, EIA, all charges included). Your tariff, fees and taxes differ.
Rate case ER-2026-0291
Pending Docket ER-2026-0291 ↗
- Jun 2026Filed with the commission as docket ER-2026-0291
- May 2027Decision expected · 227 days
Ameren Missouri (Union Electric) asked the Missouri Public Service Commission in late June 2026 for about $343 million more a year, roughly a 10% rise, or about $13 a month for the average home, per St. Louis Public Radio. The company ties the request to storm hardening, grid upgrades and 400 megawatts of new generation, and asks for a 10.25% return on equity. The commission has until May 2027 to decide, with new rates targeted for June 1, 2027.
Rate history 2015–2025
| Year | ¢/kWh | Change | Customers |
|---|---|---|---|
| 2015 | 11.34¢ | — | 1,043,603 |
| 2016 | 10.73¢ | −5.4% | 1,047,640 |
| 2017 | 11.19¢ | +4.3% | 1,053,590 |
| 2018 | 10.90¢ | −2.6% | 1,060,493 |
| 2019 | 10.38¢ | −4.8% | 1,066,035 |
| 2020 | 10.35¢ | −0.3% | 1,071,999 |
| 2021 | 10.81¢ | +4.4% | 1,077,436 |
| 2022 | 11.34¢ | +4.9% | 1,082,243 |
| 2023 | 12.28¢ | +8.3% | 1,087,971 |
| 2024 | 12.56¢ | +2.3% | 1,095,619 |
| 2025 | 13.26¢ | +5.6% | 1,100,654 |
How this compares
13.30¢
Missouri average, 2025
−0.3%
Ameren Missouri vs MO 2025 average
−23.0%
vs US 2025 average
#25
priciest in MO
Ameren Missouri files with the EIA as Union Electric Co (utility ID 19436).
Serves 65 counties in Missouri: Adair, Audrain, Bollinger, Boone, Butler, Caldwell, Callaway, Camden, Cape Girardeau, Chariton, Clark, Clay, Clinton, Cole, Cooper, Crawford, Daviess, DeKalb, Dunklin, Franklin, Gasconade, Gentry, Howard, Iron, Jefferson, Knox, Lewis, Lincoln, Linn, Livingston, Macon, Madison, Maries, Marion, Miller, Mississippi, Moniteau, Monroe, Montgomery, Morgan, New Madrid, Osage, Pemiscot, Perry, Pettis, Phelps, Pike, Pulaski, Ralls, Randolph, Ray, Reynolds, Saline, Schuyler, Scotland, Scott, St Charles, St Francois, St Louis, St Louis City, Ste Genevieve, Stoddard, Sullivan, Warren, Washington. 519 ZIP codes.
Questions
Is Ameren Missouri raising rates?
Ameren Missouri filed docket ER-2026-0291 with the Missouri Public Service Commission in Jun 2026 asking for a 10% increase (overall revenue increase, all customer classes), about $343M a year. The commission is expected to decide by May 2027.
How much more would I pay Ameren Missouri each month?
At Missouri's average use of 1,037 kWh, a bill of about $137.51 would become about $151.26 if the full 10% is approved. Commissions usually approve less than the request.
What does Ameren Missouri charge per kWh?
Ameren Missouri's average effective residential rate was 13.26¢ per kWh in 2025 (EIA-861, revenue divided by sales, all charges included). Missouri's 2025 average was 13.30¢.
How much have Ameren Missouri rates gone up in five years?
+28.1% between 2020 and 2025, against +22.4% for Missouri as a whole over the latest five-year window.
How many customers does Ameren Missouri have in Missouri?
1,100,654 residential customers in 2025, across 65 counties including Adair, Audrain, Bollinger, according to the EIA-861 survey.
Where do these numbers come from?
Rates and customer counts are from the US Energy Information Administration's annual EIA-861 survey; rate-case facts are from the Missouri Public Service Commission docket linked on this page. Nothing here is a utility bill; use it to understand the direction and size of changes.
Sources
Last verified 2026-10-16
- Missouri PSC EFIS service list, ER-2026-0291 (Ameren Missouri electric tariff case) checked 2026-10-16
- Ameren Missouri electric rate review filing (investor presentation, June 26, 2026) checked 2026-10-16
- St. Louis Public Radio: Ameren Missouri seeks a 10% rate hike in 2027 checked 2026-10-16
- EIA-861 Sales to Ultimate Customers, 2015–2025 (released 2026-10-07)
- EIA-861M monthly state averages through Jul 2026
- NREL utility-by-ZIP lookup (2024)