County annual report · FIPS 20091
2023 Johnson County, KS Power Outage Report
In 2023, customers in Johnson County, KS went without power for an average of 7.8 hours, a total of 2.3M customer-hours (Kansas average 4.3 hours). That ranks 16th worst of 94 Kansas counties and 1050th of 2,977 nationally.
Compared with KS, the US and 2022
Coverage line is EAGLE-I's share of Kansas customers tracked each year.
Biggest outages in Johnson County, 2023
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | July 14, 2023 14:45 | July 20, 2023 08:00 | 5d 17h | 64,696 | 1.8M |
| 2 | July 30, 2023 22:15 | August 2, 2023 11:15 | 2d 13h | 20,814 | 181K |
| 3 | January 1, 2023 00:00 | March 20, 2023 23:00 | 78d 23h | 8,206 | 63K |
| 4 | December 1, 2023 07:00 | December 1, 2023 19:30 | 12h 30m | 5,466 | 19K |
| 5 | October 30, 2023 10:15 | October 31, 2023 00:00 | 13h 45m | 4,188 | 3,210 |
| 6 | June 5, 2023 06:15 | June 7, 2023 03:15 | 1d 21h | 3,770 | 8,269 |
| 7 | October 3, 2023 13:15 | October 3, 2023 20:30 | 7h 15m | 3,073 | 3,881 |
| 8 | March 31, 2023 16:00 | April 2, 2023 01:45 | 1d 9h | 2,755 | 8,239 |
| 9 | August 5, 2023 23:00 | August 6, 2023 10:30 | 11h 30m | 2,584 | 2,294 |
| 10 | September 3, 2023 23:15 | September 4, 2023 04:30 | 5h 15m | 2,498 | 4,135 |
Outage episodes by size in 2023: 179 reached 100+ customers, 54 reached 1,000+ customers, 2 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 Johnson County reported on EIA Form 861 for 2023, 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 | 2023 | 7.8 hrs | 1.41 | 84 min | 0.92 |
| Evergy Kansas Central, Inc | 2023 | 3.3 hrs | 1.26 | 1.6 hrs | 0.99 |
| City of Gardner - (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 n/a of Kansas's customers in 2023; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 296,663 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. Johnson County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Johnson County, KS annual power outage report, 2023, 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/2023/kansas/johnson-county