County annual report · FIPS 28151
2021 Washington County, MS Power Outage Report
In 2021, customers in Washington County, MS went without power for an average of 4.6 hours, a total of 116K customer-hours (Mississippi average 17.2 hours). That ranks 52nd worst of 78 Mississippi counties and 1414th 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 Washington 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 | December 1, 2021 13:15 | December 1, 2021 15:45 | 2h 30m | 2,745 | 695 |
| 2 | May 4, 2021 16:45 | May 6, 2021 03:00 | 1d 10h | 2,584 | 9,869 |
| 3 | November 22, 2021 20:00 | November 22, 2021 23:15 | 3h 15m | 2,437 | 4,276 |
| 4 | November 18, 2021 11:30 | November 18, 2021 21:00 | 9h 30m | 2,435 | 3,575 |
| 5 | June 7, 2021 16:15 | June 11, 2021 04:15 | 3d 12h | 1,857 | 5,250 |
| 6 | August 29, 2021 22:00 | September 1, 2021 02:30 | 2d 4h | 1,555 | 21K |
| 7 | February 16, 2021 23:45 | February 17, 2021 04:15 | 4h 30m | 1,405 | 1,563 |
| 8 | April 7, 2021 23:45 | April 8, 2021 21:15 | 21h 30m | 1,149 | 5,898 |
| 9 | October 5, 2021 23:15 | October 6, 2021 02:30 | 3h 15m | 957 | 1,221 |
| 10 | September 10, 2021 14:30 | September 10, 2021 18:15 | 3h 45m | 925 | 1,579 |
Outage episodes by size in 2021: 61 reached 100+ customers, 8 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 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 |
| Delta Electric Power Assn | 2021 | 64.6 hrs | 4.93 | 7.6 hrs | 4.19 |
| 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 77% of Mississippi's customers in 2021; 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, 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/washington-county