County annual report · FIPS 05139
2025 Union County, AR Power Outage Report
In 2025, customers in Union County, AR went without power for an average of 9.5 hours, a total of 189K customer-hours (Arkansas average 8.1 hours). That ranks 29th worst of 75 Arkansas counties and 837th of 3,000 nationally.
Compared with AR, the US and 2024
Coverage line is EAGLE-I's share of Arkansas customers tracked each year.
Biggest outages in Union 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 | January 9, 2025 22:00 | January 11, 2025 22:30 | 2d | 1,890 | 18K |
| 2 | March 18, 2025 13:30 | March 20, 2025 20:30 | 2d 7h | 1,524 | 10K |
| 3 | December 29, 2025 01:30 | December 30, 2025 22:45 | 1d 21h | 1,224 | 3,530 |
| 4 | July 31, 2025 11:30 | August 1, 2025 22:45 | 1d 11h | 1,125 | 2,437 |
| 5 | April 5, 2025 13:45 | May 2, 2025 01:00 | 26d 11h | 1,097 | 44K |
| 6 | July 12, 2025 17:00 | July 13, 2025 02:15 | 9h 15m | 1,075 | 3,741 |
| 7 | April 2, 2025 11:45 | April 4, 2025 22:30 | 2d 10h | 910 | 2,554 |
| 8 | September 24, 2025 07:15 | September 27, 2025 05:45 | 2d 22h | 881 | 5,172 |
| 9 | February 15, 2025 13:30 | February 16, 2025 10:00 | 20h 30m | 840 | 4,864 |
| 10 | September 19, 2025 16:15 | September 21, 2025 01:15 | 1d 9h | 814 | 900 |
Outage episodes by size in 2025: 70 reached 100+ customers, 6 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 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 |
|---|---|---|---|---|---|
| Entergy Arkansas LLC | 2024 | 6.2 hrs | 1.81 | 3.8 hrs | 1.50 |
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 Arkansas's customers in 2025; 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, 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/arkansas/union-county