County annual report · FIPS 05139
2021 Union County, AR Power Outage Report
In 2021, customers in Union County, AR went without power for an average of 15.9 hours, a total of 317K customer-hours (Arkansas average 5.4 hours). That ranks 8th worst of 75 Arkansas counties and 537th of 2,974 nationally.
Compared with AR, the US and 2020
Coverage line is EAGLE-I's share of Arkansas customers tracked each year.
Biggest outages in Union 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 23, 2021 23:15 | April 27, 2021 13:00 | 3d 13h | 5,039 | 71K |
| 2 | March 1, 2021 18:15 | March 2, 2021 04:00 | 9h 45m | 2,187 | 14K |
| 3 | March 8, 2021 16:30 | April 7, 2021 18:45 | 30d 2h | 1,634 | 42K |
| 4 | August 17, 2021 16:30 | August 18, 2021 04:30 | 12h | 1,520 | 3,161 |
| 5 | April 9, 2021 14:15 | April 13, 2021 21:30 | 4d 7h | 1,388 | 21K |
| 6 | May 4, 2021 14:00 | May 21, 2021 08:45 | 16d 18h | 1,278 | 23K |
| 7 | February 16, 2021 09:00 | February 17, 2021 04:00 | 19h | 1,236 | 1,743 |
| 8 | October 25, 2021 22:15 | October 29, 2021 07:00 | 3d 8h | 1,136 | 2,089 |
| 9 | June 7, 2021 12:30 | June 9, 2021 01:30 | 1d 13h | 1,132 | 4,516 |
| 10 | July 16, 2021 19:15 | July 21, 2021 19:15 | 5d | 1,107 | 12K |
Outage episodes by size in 2021: 75 reached 100+ customers, 10 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 Union 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 |
|---|---|---|---|---|---|
| Entergy Arkansas LLC | 2021 | 6.4 hrs | 1.76 | 4.4 hrs | 1.51 |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 86% of Arkansas's customers in 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 19,892 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. Union County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Union County, AR 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/arkansas/union-county