County annual report · FIPS 05069
2021 Jefferson County, AR Power Outage Report
In 2021, customers in Jefferson County, AR went without power for an average of 8.3 hours, a total of 281K customer-hours (Arkansas average 5.4 hours). That ranks 28th worst of 75 Arkansas counties and 913th 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 Jefferson 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 | December 11, 2021 03:45 | December 12, 2021 21:15 | 1d 17h | 4,635 | 53K |
| 2 | April 29, 2021 00:00 | June 11, 2021 10:30 | 43d 10h | 3,601 | 44K |
| 3 | February 4, 2021 01:30 | February 4, 2021 01:45 | 15m | 3,281 | 820 |
| 4 | August 13, 2021 10:15 | August 16, 2021 18:45 | 3d 8h | 3,072 | 25K |
| 5 | March 27, 2021 23:00 | March 31, 2021 01:15 | 3d 2h | 2,990 | 23K |
| 6 | December 6, 2021 08:15 | December 6, 2021 21:45 | 13h 30m | 1,932 | 9,990 |
| 7 | September 21, 2021 09:15 | September 23, 2021 04:15 | 1d 19h | 1,906 | 11K |
| 8 | April 27, 2021 12:45 | April 27, 2021 23:15 | 10h 30m | 1,569 | 1,779 |
| 9 | February 14, 2021 22:30 | February 15, 2021 01:30 | 3h | 1,533 | 385 |
| 10 | July 27, 2021 07:45 | July 27, 2021 18:15 | 10h 30m | 1,526 | 3,838 |
Outage episodes by size in 2021: 86 reached 100+ customers, 16 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 Jefferson 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 |
| First Electric Coop Corp | 2021 | 2.6 hrs | 1.47 | 1.9 hrs | 1.30 |
| C & L Electric Coop Corp | - | - | - | - | - |
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 ÷ 33,927 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. Jefferson County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Jefferson 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/jefferson-county