County annual report · FIPS 28151
2023 Washington County, MS Power Outage Report
In 2023, customers in Washington County, MS went without power for an average of 8.3 hours, a total of 208K customer-hours (Mississippi average 11.1 hours). That ranks 42nd worst of 79 Mississippi counties and 991st of 2,977 nationally.
Compared with MS, the US and 2022
Coverage line is EAGLE-I's share of Mississippi customers tracked each year.
Biggest outages in Washington County, 2023
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | July 22, 2023 20:00 | July 23, 2023 05:00 | 9h | 7,640 | 25K |
| 2 | August 8, 2023 11:30 | August 9, 2023 07:30 | 20h | 7,370 | 30K |
| 3 | April 29, 2023 23:00 | April 30, 2023 05:30 | 6h 30m | 1,987 | 6,447 |
| 4 | June 11, 2023 13:45 | June 14, 2023 02:15 | 2d 12h | 1,909 | 24K |
| 5 | June 14, 2023 08:00 | July 1, 2023 20:00 | 17d 12h | 1,875 | 28K |
| 6 | April 12, 2023 12:30 | April 12, 2023 17:30 | 5h | 1,750 | 1,804 |
| 7 | August 15, 2023 09:00 | August 16, 2023 02:00 | 17h | 1,393 | 3,244 |
| 8 | March 19, 2023 02:15 | March 19, 2023 05:30 | 3h 15m | 1,381 | 3,798 |
| 9 | July 15, 2023 07:30 | July 17, 2023 07:45 | 2d | 1,141 | 7,424 |
| 10 | March 25, 2023 00:15 | March 25, 2023 23:30 | 23h 15m | 1,035 | 6,718 |
Outage episodes by size in 2023: 55 reached 100+ customers, 10 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 Washington County reported on EIA Form 861 for 2023, 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 | 2023 | 20.0 hrs | 2.14 | 4.9 hrs | 1.52 |
| Delta Electric Power Assn | 2023 | 21.8 hrs | 17.38 | 17.8 hrs | 16.92 |
| Twin County Electric Pwr Assn | 2018 | 8.2 hrs | - | 4.2 hrs | - |
| City of Leland - (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 n/a of Mississippi's customers in 2023; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 25,115 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. Washington County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Washington County, MS annual power outage report, 2023, 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/2023/mississippi/washington-county