County annual report · FIPS 29510
2023 St. Louis city, MO Power Outage Report
In 2023, customers in St. Louis city, MO went without power for an average of 70.2 hours, a total of 7.5M customer-hours (Missouri average 9.4 hours). That ranks 1st worst of 114 Missouri counties and 49th of 2,977 nationally.
Compared with MO, the US and 2022
Coverage line is EAGLE-I's share of Missouri customers tracked each year.
Biggest outages in St. Louis city, 2023
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | June 15, 2023 09:15 | July 22, 2023 02:30 | 36d 17h | 83,685 | 5.2M |
| 2 | July 22, 2023 09:45 | August 11, 2023 11:15 | 20d 1h | 62,328 | 1.1M |
| 3 | April 15, 2023 11:30 | April 22, 2023 12:00 | 7d | 19,980 | 212K |
| 4 | December 11, 2023 09:15 | December 12, 2023 08:30 | 23h 15m | 9,274 | 4,520 |
| 5 | August 11, 2023 12:30 | August 28, 2023 05:45 | 16d 17h | 8,907 | 163K |
| 6 | March 30, 2023 12:00 | April 3, 2023 09:15 | 3d 21h | 6,695 | 112K |
| 7 | February 27, 2023 11:00 | March 2, 2023 12:15 | 3d 1h | 5,272 | 37K |
| 8 | February 14, 2023 13:15 | February 18, 2023 05:45 | 3d 16h | 4,567 | 13K |
| 9 | November 24, 2023 12:00 | November 25, 2023 11:15 | 23h 15m | 4,043 | 1,542 |
| 10 | February 22, 2023 13:30 | February 27, 2023 02:30 | 4d 13h | 4,031 | 17K |
Outage episodes by size in 2023: 134 reached 100+ customers, 45 reached 1,000+ customers, 3 reached 10,000+ customers.
Utility reliability filed with the EIA
SAIDI (average outage time per customer) and SAIFI (average interruptions per customer) that utilities serving St. Louis city reported on EIA Form 861 for 2023, or their most recent earlier filing. Utility-wide figures, not county-specific.
| Utility | EIA year | SAIDI | SAIFI | SAIDI excl. major events | SAIFI excl. major events |
|---|---|---|---|---|---|
| Union Electric Co - (MO) | 2023 | 8.0 hrs | 1.18 | 1.6 hrs | 0.67 |
| Ameren | - | - | - | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about n/a of Missouri's customers in 2023; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 106,898 customers (ORNL modeled county customer count), including major storm days. It is comparable across counties but is not the SAIDI a utility files.
- An outage event is a continuous stretch with customers out; counts at 100, 1,000 and 10,000+ use its peak.
- Years loaded: 2015–2025. St. Louis city has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), St. Louis city, MO annual power outage report, 2023, data as of Oct 3, 2026 02:41 UTC, sources: DOE EAGLE-I (https://eagle-i.doe.gov/); EAGLE-I modeled customer counts (MCC) (https://figshare.com/); EIA Form 861 (utility reliability) (https://www.eia.gov/electricity/data/eia861/). https://massoutage.com/reports/2023/missouri/st-louis-city