County annual report · FIPS 05071
2018 Johnson County, AR Power Outage Report
In 2018, customers in Johnson County, AR went without power for an average of 0.5 hours, a total of 8,558 customer-hours (Arkansas average 4.4 hours). That ranks 69th worst of 74 Arkansas counties and 2518th of 2,798 nationally.
Compared with AR, the US and 2017
Coverage line is EAGLE-I's share of Arkansas 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 5, 2018 20:45 | June 5, 2018 22:00 | 1h 15m | 1,487 | 1,859 |
| 2 | July 27, 2018 14:30 | July 27, 2018 17:45 | 3h 15m | 483 | 1,190 |
| 3 | July 28, 2018 22:15 | July 28, 2018 22:45 | 30m | 479 | 240 |
| 4 | December 14, 2018 11:15 | December 14, 2018 13:15 | 2h | 399 | 798 |
| 5 | January 23, 2018 03:00 | January 23, 2018 04:15 | 1h 15m | 297 | 371 |
| 6 | July 17, 2018 22:15 | July 18, 2018 01:45 | 3h 30m | 204 | 692 |
| 7 | August 16, 2018 18:45 | August 16, 2018 22:45 | 4h | 190 | 380 |
| 8 | August 17, 2018 02:45 | August 17, 2018 05:45 | 3h | 166 | 498 |
| 9 | June 28, 2018 23:15 | June 29, 2018 00:45 | 1h 30m | 164 | 198 |
| 10 | July 18, 2018 10:00 | July 18, 2018 11:00 | 1h | 163 | 163 |
Outage episodes by size in 2018: 12 reached 100+ customers, 1 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 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 |
|---|---|---|---|---|---|
| Entergy Arkansas LLC | 2018 | 7.5 hrs | 1.93 | 5.0 hrs | 1.74 |
| Arkansas Valley Elec Coop Corp | 2018 | 3.4 hrs | 1.40 | 73 min | 0.52 |
| Oklahoma Gas & Electric Co | - | - | - | - | - |
| Clarksville Connected Utilities | - | - | - | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 78% of Arkansas's customers in 2018; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 18,727 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, AR 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/arkansas/johnson-county