County annual report · FIPS 29103
2021 Knox County, MO Power Outage Report
In 2021, customers in Knox County, MO went without power for an average of 2.3 hours, a total of 5,185 customer-hours (Missouri average 4.5 hours). That ranks 80th worst of 115 Missouri counties and 2100th 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 Knox 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 | December 17, 2021 03:15 | December 17, 2021 05:30 | 2h 15m | 211 | 475 |
| 2 | July 10, 2021 02:15 | July 11, 2021 02:15 | 1d | 204 | 2,167 |
| 3 | July 31, 2021 09:15 | July 31, 2021 11:30 | 2h 15m | 203 | 423 |
| 4 | January 11, 2021 20:45 | January 11, 2021 21:30 | 45m | 185 | 93 |
| 5 | March 29, 2021 20:15 | March 29, 2021 21:00 | 45m | 124 | 93 |
| 6 | November 4, 2021 21:00 | November 4, 2021 22:00 | 1h | 120 | 105 |
| 7 | June 21, 2021 02:15 | June 21, 2021 06:45 | 4h 30m | 68 | 255 |
| 8 | December 5, 2021 16:30 | December 5, 2021 18:30 | 2h | 66 | 100 |
| 9 | September 11, 2021 20:30 | September 11, 2021 22:00 | 1h 30m | 60 | 63 |
| 10 | October 22, 2021 23:45 | October 23, 2021 01:00 | 1h 15m | 49 | 61 |
Outage episodes by size in 2021: 6 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 Knox 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 |
| Macon Electric Coop | - | - | - | - | - |
| Tri-County Electric Coop Assn (MO) | - | - | - | - | - |
| Lewis County Rural E C A | - | - | - | - | - |
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 ÷ 2,220 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. Knox County has data for 2015–2017, 2019–2025.
Cite this report
MassOutage (massoutage.com), Knox 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/knox-county