County annual report · FIPS 28149
2021 Warren County, MS Power Outage Report
In 2021, customers in Warren County, MS went without power for an average of 45.3 hours, a total of 1.0M customer-hours (Mississippi average 17.2 hours). That ranks 17th worst of 78 Mississippi counties and 199th 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 Warren 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 | May 3, 2021 13:30 | May 8, 2021 20:15 | 5d 6h | 9,597 | 334K |
| 2 | February 17, 2021 16:45 | February 24, 2021 01:00 | 6d 8h | 7,629 | 497K |
| 3 | September 2, 2021 00:45 | September 3, 2021 19:00 | 1d 18h | 3,830 | 53K |
| 4 | January 27, 2021 20:30 | February 3, 2021 01:30 | 6d 5h | 2,716 | 17K |
| 5 | August 29, 2021 19:00 | August 31, 2021 20:30 | 2d 1h | 2,507 | 24K |
| 6 | June 3, 2021 14:15 | June 4, 2021 00:15 | 10h | 1,624 | 2,145 |
| 7 | April 10, 2021 01:00 | April 11, 2021 02:00 | 1d 1h | 1,357 | 3,809 |
| 8 | November 6, 2021 13:00 | November 6, 2021 20:15 | 7h 15m | 1,248 | 2,964 |
| 9 | December 6, 2021 12:30 | December 7, 2021 01:45 | 13h 15m | 1,174 | 2,430 |
| 10 | April 29, 2021 12:00 | April 29, 2021 22:45 | 10h 45m | 1,167 | 396 |
Outage episodes by size in 2021: 78 reached 100+ customers, 14 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 Warren 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 |
| Twin County Electric Pwr Assn | 2018 | 8.2 hrs | - | 4.2 hrs | - |
| Yazoo Valley Elec Power Assn | - | - | - | - | - |
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 ÷ 22,742 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. Warren County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Warren 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/warren-county