County annual report · FIPS 29510
2015 St. Louis city, MO Power Outage Report
In 2015, customers in St. Louis city, MO went without power for an average of 1.5 hours, a total of 163K customer-hours (Missouri average 2.2 hours). That ranks 41st worst of 93 Missouri counties and 1465th of 2,484 nationally.
Compared with MO, the US
Coverage line is EAGLE-I's share of Missouri customers tracked each year.
Biggest outages in St. Louis city, 2015
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | December 26, 2015 19:00 | December 30, 2015 11:00 | 3d 16h | 3,750 | 19K |
| 2 | August 12, 2015 10:30 | August 12, 2015 11:00 | 30m | 3,044 | 1,522 |
| 3 | November 13, 2015 14:45 | November 14, 2015 03:30 | 12h 45m | 2,553 | 3,585 |
| 4 | October 5, 2015 12:45 | October 6, 2015 14:15 | 1d 1h | 2,352 | 1,300 |
| 5 | October 7, 2015 13:30 | October 9, 2015 01:00 | 1d 11h | 2,352 | 919 |
| 6 | July 19, 2015 09:30 | July 19, 2015 19:00 | 9h 30m | 1,778 | 5,456 |
| 7 | October 28, 2015 05:30 | October 28, 2015 13:30 | 8h | 1,631 | 678 |
| 8 | December 3, 2015 12:45 | December 4, 2015 05:15 | 16h 30m | 1,564 | 598 |
| 9 | August 13, 2015 00:45 | August 25, 2015 02:00 | 12d 1h | 1,541 | 15K |
| 10 | September 22, 2015 21:30 | September 23, 2015 03:15 | 5h 45m | 1,398 | 721 |
Outage episodes by size in 2015: 71 reached 100+ customers, 14 reached 1,000+ customers, 0 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 2015, 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) | 2015 | 1.9 hrs | 0.82 | 1.6 hrs | 0.77 |
| 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 2015; 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, 2015, 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/2015/missouri/st-louis-city