County annual report · FIPS 29189
2016 St. Louis County, MO Power Outage Report
In 2016, customers in St. Louis County, MO went without power for an average of 6.3 hours, a total of 3.7M customer-hours (Missouri average 3.1 hours). That ranks 8th worst of 93 Missouri counties and 542nd of 2,391 nationally.
Compared with MO, the US and 2015
Coverage line is EAGLE-I's share of Missouri customers tracked each year.
Biggest outages in St. Louis County, 2016
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | July 6, 2016 13:15 | July 27, 2016 09:30 | 20d 20h | 67,070 | 2.0M |
| 2 | May 7, 2016 11:45 | May 12, 2016 15:45 | 5d 4h | 36,146 | 410K |
| 3 | February 23, 2016 12:30 | February 26, 2016 09:00 | 2d 20h | 30,843 | 302K |
| 4 | April 26, 2016 12:30 | May 2, 2016 18:30 | 6d 6h | 15,599 | 112K |
| 5 | August 14, 2016 09:45 | August 20, 2016 10:30 | 6d | 13,214 | 111K |
| 6 | May 12, 2016 16:45 | May 17, 2016 03:45 | 4d 11h | 8,823 | 59K |
| 7 | December 14, 2016 14:30 | December 15, 2016 12:30 | 22h | 8,250 | 21K |
| 8 | January 9, 2016 03:15 | January 12, 2016 01:30 | 2d 22h | 6,442 | 22K |
| 9 | December 16, 2016 13:00 | December 17, 2016 07:15 | 18h 15m | 6,018 | 7,482 |
| 10 | June 23, 2016 10:45 | June 29, 2016 07:30 | 5d 20h | 5,949 | 54K |
Outage episodes by size in 2016: 168 reached 100+ customers, 51 reached 1,000+ customers, 5 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 County reported on EIA Form 861 for 2016, 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) | 2016 | 4.9 hrs | 1.13 | 1.5 hrs | 0.73 |
| Ameren | - | - | - | - | - |
| City of Kirkwood - (MO) | - | - | - | - | - |
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 2016; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 594,469 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 County has data for 2015–2021, 2025.
Cite this report
MassOutage (massoutage.com), St. Louis County, MO annual power outage report, 2016, 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/2016/missouri/st-louis-county