County annual report · FIPS 29157
2021 Perry County, MO Power Outage Report
In 2021, customers in Perry County, MO went without power for an average of 1.6 hours, a total of 19K customer-hours (Missouri average 4.5 hours). That ranks 91st worst of 115 Missouri counties and 2390th of 2,974 nationally.
Compared with MO, the US and 2020
Coverage line is EAGLE-I's share of Missouri customers tracked each year.
Biggest outages in Perry County, 2021
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | October 25, 2021 02:30 | October 27, 2021 00:15 | 1d 21h | 1,126 | 10K |
| 2 | July 19, 2021 21:45 | July 19, 2021 22:45 | 1h | 532 | 273 |
| 3 | October 4, 2021 15:45 | October 4, 2021 16:30 | 45m | 526 | 391 |
| 4 | March 29, 2021 00:15 | March 29, 2021 01:30 | 1h 15m | 492 | 615 |
| 5 | August 10, 2021 04:30 | August 10, 2021 06:15 | 1h 45m | 368 | 415 |
| 6 | March 31, 2021 19:45 | March 31, 2021 20:00 | 15m | 365 | 91 |
| 7 | August 28, 2021 09:00 | August 28, 2021 14:30 | 5h 30m | 281 | 387 |
| 8 | March 24, 2021 17:45 | March 24, 2021 19:00 | 1h 15m | 188 | 235 |
| 9 | August 13, 2021 01:45 | August 13, 2021 12:00 | 10h 15m | 187 | 1,022 |
| 10 | June 10, 2021 22:30 | June 11, 2021 00:15 | 1h 45m | 106 | 157 |
Outage episodes by size in 2021: 10 reached 100+ customers, 1 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 Perry County reported on EIA Form 861 for 2021, 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) | 2021 | 4.9 hrs | 1.02 | 1.5 hrs | 0.69 |
| Black River Electric Coop - (MO) | 2021 | 9.1 hrs | - | 5.6 hrs | - |
| Citizens Electric Corporation - (MO) | 2021 | 3.1 hrs | 0.86 | 72 min | 0.63 |
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 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 11,694 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. Perry County has data for 2017–2025.
Cite this report
MassOutage (massoutage.com), Perry County, MO annual power outage report, 2021, 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/2021/missouri/perry-county