County annual report · FIPS 28059
2021 Jackson County, MS Power Outage Report
In 2021, customers in Jackson County, MS went without power for an average of 3.5 hours, a total of 201K customer-hours (Mississippi average 17.2 hours). That ranks 61st worst of 78 Mississippi counties and 1684th of 2,974 nationally.
Compared with MS, the US and 2020
Coverage line is EAGLE-I's share of Mississippi customers tracked each year.
Biggest outages in Jackson 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 | June 18, 2021 21:15 | June 20, 2021 04:30 | 1d 7h | 5,216 | 16K |
| 2 | April 10, 2021 05:15 | April 10, 2021 23:00 | 17h 45m | 3,947 | 11K |
| 3 | August 27, 2021 17:30 | September 2, 2021 21:45 | 6d 4h | 3,614 | 25K |
| 4 | April 24, 2021 10:00 | April 26, 2021 20:00 | 2d 10h | 3,107 | 14K |
| 5 | November 27, 2021 03:00 | November 27, 2021 03:30 | 30m | 2,437 | 878 |
| 6 | June 28, 2021 13:00 | June 29, 2021 00:45 | 11h 45m | 2,237 | 1,226 |
| 7 | September 28, 2021 14:00 | September 29, 2021 00:00 | 10h | 2,085 | 1,280 |
| 8 | July 24, 2021 20:15 | July 25, 2021 04:00 | 7h 45m | 1,987 | 2,385 |
| 9 | May 3, 2021 11:00 | May 7, 2021 12:15 | 4d 1h | 1,783 | 2,797 |
| 10 | November 19, 2021 08:00 | November 19, 2021 09:30 | 1h 30m | 1,593 | 1,271 |
Outage episodes by size in 2021: 146 reached 100+ customers, 33 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 Jackson 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 |
|---|---|---|---|---|---|
| Mississippi Power Co | 2021 | 5.9 hrs | 1.65 | 82 min | 1.01 |
| Pearl River Valley El Pwr Assn | 2021 | 6.8 hrs | 2.45 | 2.5 hrs | 1.80 |
| Singing River Elec Cooperative | 2021 | 3.8 hrs | - | 2.5 hrs | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 77% of Mississippi's customers in 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 57,806 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. Jackson County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Jackson County, MS 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/mississippi/jackson-county