County annual report · FIPS 05093
2021 Mississippi County, AR Power Outage Report
In 2021, customers in Mississippi County, AR went without power for an average of 11.2 hours, a total of 201K customer-hours (Arkansas average 5.4 hours). That ranks 18th worst of 75 Arkansas counties and 720th 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 Mississippi 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 | August 1, 2021 02:30 | August 2, 2021 10:45 | 1d 8h | 3,843 | 7,370 |
| 2 | December 11, 2021 01:30 | December 31, 2021 00:15 | 19d 22h | 2,700 | 91K |
| 3 | February 11, 2021 04:00 | February 12, 2021 23:45 | 1d 19h | 2,585 | 23K |
| 4 | June 22, 2021 21:30 | June 23, 2021 00:45 | 3h 15m | 1,707 | 5,545 |
| 5 | August 9, 2021 14:15 | August 10, 2021 15:45 | 1d 1h | 1,410 | 2,919 |
| 6 | March 27, 2021 23:00 | March 30, 2021 18:00 | 2d 19h | 1,249 | 2,264 |
| 7 | July 15, 2021 05:00 | July 15, 2021 09:45 | 4h 45m | 1,056 | 4,213 |
| 8 | April 26, 2021 03:00 | May 21, 2021 16:00 | 25d 13h | 992 | 6,723 |
| 9 | January 4, 2021 22:30 | January 5, 2021 00:30 | 2h | 855 | 216 |
| 10 | January 4, 2021 16:00 | January 4, 2021 16:15 | 15m | 854 | 214 |
Outage episodes by size in 2021: 53 reached 100+ customers, 7 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 Mississippi 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 |
| City of Osceola - (AR) | - | - | - | - | - |
| Mississippi County Electric Co | - | - | - | - | - |
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 ÷ 17,931 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. Mississippi County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Mississippi 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/mississippi-county