County annual report · FIPS 20191
2021 Sumner County, KS Power Outage Report
In 2021, customers in Sumner County, KS went without power for an average of 3.6 hours, a total of 32K customer-hours (Kansas average 4.0 hours). That ranks 57th worst of 94 Kansas counties and 1648th 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 Sumner 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 22, 2021 23:15 | April 22, 2021 23:45 | 30m | 1,713 | 857 |
| 2 | October 30, 2021 18:15 | November 1, 2021 13:15 | 1d 19h | 1,132 | 3,782 |
| 3 | October 25, 2021 14:30 | October 25, 2021 20:15 | 5h 45m | 1,077 | 808 |
| 4 | September 16, 2021 16:00 | September 16, 2021 18:00 | 2h | 962 | 1,891 |
| 5 | July 22, 2021 03:15 | July 22, 2021 05:15 | 2h | 796 | 1,394 |
| 6 | June 22, 2021 18:30 | June 23, 2021 00:00 | 5h 30m | 792 | 1,204 |
| 7 | September 13, 2021 18:45 | September 13, 2021 19:15 | 30m | 540 | 270 |
| 8 | June 12, 2021 19:00 | June 14, 2021 13:00 | 1d 18h | 347 | 14K |
| 9 | April 21, 2021 16:45 | April 22, 2021 22:00 | 1d 5h | 288 | 711 |
| 10 | August 29, 2021 11:45 | August 29, 2021 13:15 | 1h 30m | 189 | 246 |
Outage episodes by size in 2021: 15 reached 100+ customers, 3 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 Sumner 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 South, Inc | 2021 | 2.8 hrs | 1.33 | 1.9 hrs | 1.10 |
| Wheatland Electric Coop, Inc | 2021 | 3.3 hrs | 1.24 | 1.5 hrs | 0.97 |
| Sedgwick County El Coop Assn Inc | 2018 | 1.7 hrs | 1.00 | 1.7 hrs | 1.00 |
| Sumner-Cowley Elec Coop, Inc | - | - | - | - | - |
| City of Mulvane - (KS) | - | - | - | - | - |
| City of Oxford - (KS) | - | - | - | - | - |
| City of Wellington - (KS) | - | - | - | - | - |
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 ÷ 8,773 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. Sumner County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Sumner 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/sumner-county