County annual report · FIPS 28163
2021 Yazoo County, MS Power Outage Report
In 2021, customers in Yazoo County, MS went without power for an average of 7.6 hours, a total of 82K customer-hours (Mississippi average 17.2 hours). That ranks 43rd worst of 78 Mississippi counties and 977th 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 Yazoo 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 17, 2021 22:45 | February 22, 2021 23:45 | 5d 1h | 1,148 | 45K |
| 2 | May 4, 2021 19:15 | May 6, 2021 00:30 | 1d 5h | 958 | 7,780 |
| 3 | December 11, 2021 04:00 | December 11, 2021 06:30 | 2h 30m | 651 | 789 |
| 4 | December 11, 2021 19:30 | December 11, 2021 20:00 | 30m | 651 | 326 |
| 5 | July 10, 2021 20:15 | July 10, 2021 22:00 | 1h 45m | 641 | 641 |
| 6 | May 3, 2021 00:00 | May 4, 2021 00:00 | 1d | 483 | 8,368 |
| 7 | July 19, 2021 11:00 | July 19, 2021 22:00 | 11h | 482 | 633 |
| 8 | March 25, 2021 07:00 | March 25, 2021 15:15 | 8h 15m | 232 | 499 |
| 9 | April 24, 2021 10:45 | April 24, 2021 19:15 | 8h 30m | 230 | 1,939 |
| 10 | September 1, 2021 20:45 | September 4, 2021 00:00 | 2d 3h | 203 | 4,586 |
Outage episodes by size in 2021: 17 reached 100+ customers, 1 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 Yazoo 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 |
| Yazoo Valley Elec Power Assn | - | - | - | - | - |
| Public Serv Comm of Yazoo City | - | - | - | - | - |
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 ÷ 10,785 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. Yazoo County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Yazoo 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/yazoo-county