County annual report · FIPS 20091
2018 Johnson County, KS Power Outage Report
In 2018, customers in Johnson County, KS went without power for an average of 1.7 hours, a total of 510K customer-hours (Kansas average 3.2 hours). That ranks 48th worst of 83 Kansas counties and 1983rd of 2,798 nationally.
Compared with KS, the US and 2017
Coverage line is EAGLE-I's share of Kansas customers tracked each year.
Biggest outages in Johnson County, 2018
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | June 2, 2018 09:45 | June 5, 2018 03:15 | 2d 17h | 23,749 | 188K |
| 2 | February 9, 2018 16:15 | February 10, 2018 01:15 | 9h | 5,809 | 5,426 |
| 3 | August 27, 2018 09:45 | August 30, 2018 07:00 | 2d 21h | 5,656 | 23K |
| 4 | December 9, 2018 09:15 | December 9, 2018 11:45 | 2h 30m | 4,648 | 8,840 |
| 5 | November 25, 2018 14:45 | November 27, 2018 21:45 | 2d 7h | 3,103 | 21K |
| 6 | November 8, 2018 23:15 | November 10, 2018 09:30 | 1d 10h | 2,950 | 7,454 |
| 7 | February 20, 2018 03:15 | February 20, 2018 21:15 | 18h | 2,833 | 1,566 |
| 8 | January 11, 2018 13:00 | January 12, 2018 01:30 | 12h 30m | 2,785 | 10K |
| 9 | September 8, 2018 08:45 | September 14, 2018 21:45 | 6d 13h | 2,572 | 8,290 |
| 10 | February 17, 2018 13:00 | February 18, 2018 23:45 | 1d 10h | 2,546 | 7,136 |
Outage episodes by size in 2018: 186 reached 100+ customers, 39 reached 1,000+ customers, 1 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 2018, 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 | 2018 | 2.6 hrs | 1.00 | 72 min | 0.78 |
| Evergy Kansas Central, Inc | 2018 | 2.6 hrs | 1.16 | 1.5 hrs | 0.91 |
| 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 71% of Kansas's customers in 2018; 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, 2018, 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/2018/kansas/johnson-county