County annual report · FIPS 20091
2025 Johnson County, KS Power Outage Report
In 2025, customers in Johnson County, KS went without power for an average of 2.3 hours, a total of 673K customer-hours (Kansas average 2.9 hours). That ranks 57th worst of 99 Kansas counties and 2324th of 3,000 nationally.
Compared with KS, the US and 2024
Coverage line is EAGLE-I's share of Kansas customers tracked each year.
Biggest outages in Johnson County, 2025
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | May 18, 2025 12:00 | May 22, 2025 02:00 | 3d 14h | 16,245 | 106K |
| 2 | July 15, 2025 10:00 | July 20, 2025 05:00 | 4d 19h | 13,987 | 93K |
| 3 | March 4, 2025 13:45 | March 7, 2025 12:15 | 2d 22h | 12,718 | 87K |
| 4 | June 23, 2025 12:00 | June 28, 2025 11:45 | 4d 23h | 6,128 | 34K |
| 5 | October 19, 2025 21:15 | October 20, 2025 01:30 | 4h 15m | 5,813 | 5,929 |
| 6 | June 29, 2025 02:00 | June 30, 2025 03:45 | 1d 1h | 5,435 | 14K |
| 7 | June 11, 2025 11:45 | June 12, 2025 01:15 | 13h 30m | 5,343 | 7,361 |
| 8 | August 19, 2025 10:45 | August 20, 2025 04:30 | 17h 45m | 5,322 | 21K |
| 9 | September 16, 2025 03:15 | September 16, 2025 21:00 | 17h 45m | 5,303 | 5,410 |
| 10 | December 11, 2025 15:15 | December 11, 2025 22:00 | 6h 45m | 4,849 | 3,470 |
Outage episodes by size in 2025: 177 reached 100+ customers, 48 reached 1,000+ customers, 3 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 2025, 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 | 2024 | 6.0 hrs | 1.52 | 83 min | 0.93 |
| Evergy Kansas Central, Inc | 2024 | 5.3 hrs | 1.65 | 1.7 hrs | 1.05 |
| 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 2025; 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, 2025, 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/2025/kansas/johnson-county