Power outages in Missouri
In 2025, the average Missouri customer had 6.2 hours (369.1 minutes, or about 6 hours 9 minutes) without power. The US median in the data is 4.3 hours (258.7 minutes), so Missouri was about 1.8 hours higher.
Trend
Yearly outage time has gone up and down since 2020 rather than moving in one direction. It ranged from 2.5 hours in 2022 to the worst year, 2023, at 6.2 hours (371.8 minutes), and 2025 was almost as high.
Utilities in 2025
In 2025 the lowest SAIDI was Boone Electric Coop at 1.1 hours (66.87 minutes). The highest was Black River Electric Coop at 48.5 hours (2,908.52 minutes).
| Utility | Customers | Hours / yr | Interruptions |
|---|---|---|---|
| Black River Electric Coop - (MO) | 25,604 | 48.5 | — |
| Citizens Electric Corporation - (MO) | 28,056 | 28.1 | 3.9 |
| City Utilities of Springfield - (MO) | 127,805 | 21.5 | 2.3 |
| SEMO Electric Cooperative | 16,284 | 13.7 | 2.6 |
| Intercounty Electric Coop Assn - (MO) | 32,123 | 11.8 | 3.1 |
| Union Electric Co - (MO) | 1,284,472 | 9.9 | 1.2 |
| Central Missouri Elec Coop Inc | 11,569 | 7.0 | 1.5 |
| Osage Valley Elec Coop Assn | 18,148 | 6.3 | 0.7 |
| Crawford Electric Coop, Inc | 21,820 | 6.0 | 2.0 |
| Southwest Electric Coop, Inc | 44,904 | 5.9 | 1.0 |
| Farmers Electric Coop, Inc - (MO) | 13,739 | 3.3 | 1.9 |
| Evergy Missouri West | 350,586 | 3.1 | 1.5 |
| Evergy Metro | 313,505 | 3.0 | 1.5 |
| City of Kirkwood - (MO) | 10,325 | 2.9 | 2.0 |
| City of Independence - (MO) | 58,081 | 2.8 | 0.9 |
| Empire District Electric Co | 160,704 | 2.8 | 1.1 |
| Co-Mo Electric Coop Inc | 33,890 | 2.6 | 1.1 |
| Laclede Electric Coop, Inc | 39,269 | 2.6 | 2.1 |
| Cuivre River Electric Coop Inc | 74,501 | 2.3 | 1.2 |
| Three Rivers Electric Coop | 24,579 | 2.2 | 1.0 |
| Carroll Electric Coop Corp - (AR) | 12,548 | 2.1 | 2.0 |
| Macon Electric Coop | 11,661 | 1.9 | — |
| West Central Electric Coop Inc - (MO) | 15,724 | 1.8 | 0.9 |
| Webster Electric Coop | 23,127 | 1.7 | 1.2 |
| City of Columbia - (MO) | 53,563 | 1.6 | 0.7 |
What this means for backup power
For everyday outages, enter 3.9 hours in the calculator, the average length of one interruption. To ride out a year like 2023, size for 6.2 hours, which is all of that year's outage time added together.
FAQ
What does SAIDI mean?
SAIDI is the total time the average customer is without power in a year. It is not the length of one outage. In Missouri in 2025 it was 6.2 hours (369.1 minutes).
How long does one outage last in Missouri?
On average, one interruption lasts about 3.9 hours. Customers had about 1.56 interruptions in 2025. Use 3.9 hours in the calculator for a typical outage.
How much backup power time should I plan for?
For everyday outages, plan for about 3.9 hours. If you want to cover a year as bad as 2023, plan for 6.2 hours of total outage time. The calculator will show what size of backup system that needs.
Utility pages
Source: U.S. EIA Form 861 Reliability file. Data snapshot 2026-11-05.