County annual report · FIPS 28111
2021 Perry County, MS Power Outage Report
In 2021, customers in Perry County, MS went without power for an average of 12.3 hours, a total of 59K customer-hours (Mississippi average 17.2 hours). That ranks 36th worst of 78 Mississippi counties and 667th 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 Perry 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 30, 2021 06:45 | August 30, 2021 20:30 | 13h 45m | 2,233 | 6,655 |
| 2 | April 24, 2021 04:45 | April 26, 2021 19:15 | 2d 14h | 1,804 | 13K |
| 3 | November 24, 2021 06:15 | November 24, 2021 09:30 | 3h 15m | 1,098 | 3,566 |
| 4 | August 31, 2021 00:30 | August 31, 2021 04:00 | 3h 30m | 869 | 3,041 |
| 5 | August 30, 2021 22:15 | August 30, 2021 23:15 | 1h | 846 | 846 |
| 6 | September 8, 2021 15:15 | September 8, 2021 22:45 | 7h 30m | 846 | 852 |
| 7 | February 11, 2021 21:00 | February 11, 2021 21:30 | 30m | 813 | 204 |
| 8 | October 28, 2021 00:30 | October 28, 2021 05:30 | 5h | 792 | 265 |
| 9 | September 7, 2021 09:45 | September 7, 2021 10:30 | 45m | 433 | 325 |
| 10 | April 10, 2021 06:30 | April 12, 2021 17:45 | 2d 11h | 396 | 6,546 |
Outage episodes by size in 2021: 41 reached 100+ customers, 3 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 Perry 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 | - |
| Dixie Electric Power Assn - (MS) | - | - | - | - | - |
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 ÷ 4,806 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. Perry County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Perry 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/perry-county