County annual report · FIPS 28017
2021 Chickasaw County, MS Power Outage Report
In 2021, customers in Chickasaw County, MS went without power for an average of 0.1 hours, a total of 839 customer-hours (Mississippi average 17.2 hours). That ranks 76th worst of 78 Mississippi counties and 2929th 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 Chickasaw 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 | April 10, 2021 01:45 | April 10, 2021 11:30 | 9h 45m | 61 | 418 |
| 2 | May 10, 2021 16:30 | May 10, 2021 20:45 | 4h 15m | 40 | 131 |
| 3 | May 4, 2021 18:00 | May 4, 2021 20:15 | 2h 15m | 38 | 63 |
| 4 | September 27, 2021 08:00 | September 27, 2021 09:45 | 1h 45m | 23 | 40 |
| 5 | April 10, 2021 12:45 | April 11, 2021 02:45 | 14h | 15 | 84 |
| 6 | June 24, 2021 14:00 | June 24, 2021 14:30 | 30m | 14 | 7 |
| 7 | August 21, 2021 19:00 | August 21, 2021 20:30 | 1h 30m | 6 | 7 |
| 8 | March 18, 2021 00:30 | March 18, 2021 14:00 | 13h 30m | 5 | 59 |
| 9 | January 22, 2021 21:45 | January 22, 2021 22:00 | 15m | 2 | 1 |
| 10 | March 31, 2021 16:45 | March 31, 2021 19:45 | 3h | 2 | 5 |
Outage episodes by size in 2021: 0 reached 100+ customers, 0 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 Chickasaw 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 |
|---|---|---|---|---|---|
| 4-County Electric Power Assn | 2021 | 8.5 hrs | 2.00 | 1.9 hrs | 1.31 |
| Natchez Trace Elec Power Assn | 2021 | 11.2 hrs | - | 5.3 hrs | - |
| City of Okolona | - | - | - | - | - |
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 ÷ 11,632 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. Chickasaw County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Chickasaw 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/chickasaw-county