County annual report · FIPS 29510
2020 St. Louis city, MO Power Outage Report
In 2020, customers in St. Louis city, MO went without power for an average of 14.8 hours, a total of 1.6M customer-hours (Missouri average 2.8 hours). That ranks 4th worst of 115 Missouri counties and 567th of 3,019 nationally.
Compared with MO, the US and 2019
Coverage line is EAGLE-I's share of Missouri customers tracked each year.
Biggest outages in St. Louis city, 2020
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | August 9, 2020 04:00 | August 19, 2020 09:30 | 10d 5h | 44,212 | 764K |
| 2 | July 14, 2020 10:45 | July 29, 2020 05:45 | 14d 19h | 22,472 | 284K |
| 3 | October 12, 2020 11:30 | October 14, 2020 05:15 | 1d 17h | 6,009 | 13K |
| 4 | June 20, 2020 06:45 | June 28, 2020 05:15 | 7d 22h | 4,484 | 70K |
| 5 | August 23, 2020 10:30 | September 4, 2020 09:00 | 11d 22h | 4,331 | 31K |
| 6 | March 11, 2020 16:15 | March 12, 2020 00:15 | 8h | 3,673 | 1,436 |
| 7 | October 14, 2020 07:15 | October 20, 2020 12:00 | 6d 4h | 3,384 | 32K |
| 8 | May 24, 2020 10:45 | May 27, 2020 04:45 | 2d 18h | 3,157 | 16K |
| 9 | July 29, 2020 09:00 | August 2, 2020 06:30 | 3d 21h | 2,855 | 23K |
| 10 | February 10, 2020 13:00 | February 11, 2020 03:30 | 14h 30m | 2,663 | 2,100 |
Outage episodes by size in 2020: 114 reached 100+ customers, 27 reached 1,000+ customers, 2 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 2020, 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) | 2020 | 2.6 hrs | 0.86 | 86 min | 0.71 |
| 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 95% of Missouri's customers in 2020; 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, 2020, 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/2020/missouri/st-louis-city