County annual report · FIPS 28029
2021 Copiah County, MS Power Outage Report
In 2021, customers in Copiah County, MS went without power for an average of 71.8 hours, a total of 1.3M customer-hours (Mississippi average 17.2 hours). That ranks 8th worst of 78 Mississippi counties and 114th 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 Copiah 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 | February 15, 2021 14:45 | April 9, 2021 15:30 | 53d | 12,611 | 894K |
| 2 | August 30, 2021 01:30 | September 3, 2021 20:15 | 4d 18h | 8,302 | 193K |
| 3 | May 4, 2021 18:00 | May 8, 2021 01:15 | 3d 7h | 5,113 | 76K |
| 4 | July 26, 2021 11:45 | July 29, 2021 15:00 | 3d 3h | 3,578 | 3,316 |
| 5 | November 3, 2021 18:30 | November 3, 2021 19:30 | 1h | 1,945 | 1,945 |
| 6 | August 21, 2021 15:00 | August 21, 2021 19:15 | 4h 15m | 1,516 | 3,127 |
| 7 | July 17, 2021 19:45 | July 18, 2021 05:30 | 9h 45m | 1,272 | 6,020 |
| 8 | August 1, 2021 19:15 | August 2, 2021 01:00 | 5h 45m | 1,188 | 313 |
| 9 | April 24, 2021 05:45 | April 25, 2021 04:30 | 22h 45m | 1,079 | 6,915 |
| 10 | December 6, 2021 16:45 | December 7, 2021 01:00 | 8h 15m | 1,043 | 2,494 |
Outage episodes by size in 2021: 70 reached 100+ customers, 10 reached 1,000+ customers, 1 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 Copiah 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 Mississippi LLC | 2021 | 22.9 hrs | 2.44 | 4.7 hrs | 1.50 |
| Southwest Mississippi E P A | 2021 | 108.4 hrs | - | 20.5 hrs | - |
| Southern Pine Electric Cooperative | - | - | - | - | - |
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 ÷ 17,728 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. Copiah County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Copiah 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/copiah-county