County annual report · FIPS 29203
2021 Shannon County, MO Power Outage Report
In 2021, customers in Shannon County, MO went without power for an average of 2.8 hours, a total of 9,093 customer-hours (Missouri average 4.5 hours). That ranks 69th worst of 115 Missouri counties and 1909th 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 Shannon 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 | April 18, 2021 13:15 | April 18, 2021 14:30 | 1h 15m | 538 | 673 |
| 2 | April 22, 2021 19:15 | April 22, 2021 20:00 | 45m | 334 | 251 |
| 3 | December 11, 2021 04:30 | December 11, 2021 09:00 | 4h 30m | 267 | 673 |
| 4 | April 9, 2021 22:15 | April 10, 2021 04:45 | 6h 30m | 242 | 359 |
| 5 | December 6, 2021 03:30 | December 6, 2021 11:15 | 7h 45m | 214 | 574 |
| 6 | September 21, 2021 09:30 | September 21, 2021 11:45 | 2h 15m | 166 | 211 |
| 7 | April 26, 2021 17:30 | April 26, 2021 17:45 | 15m | 122 | 31 |
| 8 | August 18, 2021 17:00 | August 18, 2021 19:15 | 2h 15m | 93 | 189 |
| 9 | December 18, 2021 04:15 | December 18, 2021 20:15 | 16h | 93 | 503 |
| 10 | June 28, 2021 20:00 | June 28, 2021 22:15 | 2h 15m | 86 | 194 |
Outage episodes by size in 2021: 7 reached 100+ customers, 0 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 Shannon 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 |
|---|---|---|---|---|---|
| Black River Electric Coop - (MO) | 2021 | 9.1 hrs | - | 5.6 hrs | - |
| Intercounty Electric Coop Assn - (MO) | 2021 | 2.7 hrs | 1.45 | 2.0 hrs | 1.28 |
| Ozark Border Electric Coop | - | - | - | - | - |
| Howell-Oregon Elec Coop, Inc | - | - | - | - | - |
| City of Winona - (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 95% of Missouri's customers in 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 3,195 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. Shannon County has data for 2017–2025.
Cite this report
MassOutage (massoutage.com), Shannon 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/shannon-county