County annual report · FIPS 20087
2021 Jefferson County, KS Power Outage Report
In 2021, customers in Jefferson County, KS went without power for an average of 6.7 hours, a total of 70K customer-hours (Kansas average 4.0 hours). That ranks 35th worst of 94 Kansas counties and 1070th of 2,974 nationally.
Compared with KS, the US and 2020
Coverage line is EAGLE-I's share of Kansas customers tracked each year.
Biggest outages in Jefferson 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 | August 12, 2021 20:15 | August 12, 2021 20:30 | 15m | 2,141 | 535 |
| 2 | April 22, 2021 23:15 | April 22, 2021 23:45 | 30m | 2,086 | 1,043 |
| 3 | December 15, 2021 21:45 | December 19, 2021 02:45 | 3d 5h | 2,086 | 30K |
| 4 | June 11, 2021 19:15 | June 13, 2021 15:30 | 1d 20h | 1,594 | 7,244 |
| 5 | September 21, 2021 23:15 | September 22, 2021 02:45 | 3h 30m | 1,353 | 4,735 |
| 6 | September 29, 2021 16:00 | September 29, 2021 18:45 | 2h 45m | 1,347 | 3,366 |
| 7 | June 13, 2021 16:15 | June 14, 2021 05:45 | 13h 30m | 958 | 3,398 |
| 8 | June 15, 2021 04:15 | June 15, 2021 12:45 | 8h 30m | 957 | 6,129 |
| 9 | May 16, 2021 12:30 | May 16, 2021 15:00 | 2h 30m | 496 | 869 |
| 10 | August 8, 2021 05:45 | August 8, 2021 15:00 | 9h 15m | 408 | 755 |
Outage episodes by size in 2021: 18 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 Jefferson 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 |
|---|---|---|---|---|---|
| Evergy Metro | 2021 | 4.0 hrs | 1.57 | 1.6 hrs | 0.94 |
| Evergy Kansas Central, Inc | 2021 | 5.8 hrs | 1.68 | 1.7 hrs | 1.02 |
| FreeState Electric Coop | 2021 | 9.1 hrs | - | 6.0 hrs | - |
| Brown-Atchison E C A 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 80% of Kansas's customers in 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 10,486 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. Jefferson County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Jefferson County, KS 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/kansas/jefferson-county