County annual report · FIPS 29167
2021 Polk County, MO Power Outage Report
In 2021, customers in Polk County, MO went without power for an average of 6.0 hours, a total of 71K customer-hours (Missouri average 4.5 hours). That ranks 37th worst of 115 Missouri counties and 1141st 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 Polk 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 | March 18, 2021 01:00 | March 18, 2021 06:45 | 5h 45m | 3,342 | 7,820 |
| 2 | January 1, 2021 08:00 | January 2, 2021 05:00 | 21h | 1,437 | 8,738 |
| 3 | December 10, 2021 23:45 | December 11, 2021 08:30 | 8h 45m | 1,434 | 3,409 |
| 4 | March 15, 2021 03:30 | March 15, 2021 12:45 | 9h 15m | 1,197 | 11K |
| 5 | August 29, 2021 12:30 | August 29, 2021 13:30 | 1h | 1,197 | 1,197 |
| 6 | February 22, 2021 20:30 | February 22, 2021 21:00 | 30m | 1,170 | 585 |
| 7 | December 6, 2021 04:45 | December 6, 2021 10:00 | 5h 15m | 923 | 4,621 |
| 8 | June 12, 2021 00:00 | June 12, 2021 06:15 | 6h 15m | 899 | 2,707 |
| 9 | May 27, 2021 17:00 | May 28, 2021 15:45 | 22h 45m | 762 | 11K |
| 10 | May 2, 2021 03:00 | May 2, 2021 12:00 | 9h | 655 | 5,869 |
Outage episodes by size in 2021: 28 reached 100+ customers, 6 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 Polk 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 |
|---|---|---|---|---|---|
| Empire District Electric Co | 2021 | 2.4 hrs | 1.25 | 88 min | 0.98 |
| Southwest Electric Coop, Inc | 2021 | 2.3 hrs | 1.00 | 1.7 hrs | 1.00 |
| Ozark Electric Coop Inc - (MO) | - | - | - | - | - |
| Sac-Osage Electric Coop Inc | - | - | - | - | - |
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 ÷ 11,719 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. Polk County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Polk 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/polk-county