County annual report · FIPS 28151
2018 Washington County, MS Power Outage Report
In 2018, customers in Washington County, MS went without power for an average of 4.9 hours, a total of 122K customer-hours (Mississippi average 3.0 hours). That ranks 26th worst of 76 Mississippi counties and 1072nd of 2,798 nationally.
Compared with MS, the US and 2017
Coverage line is EAGLE-I's share of Mississippi customers tracked each year.
Biggest outages in Washington County, 2018
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | March 6, 2018 03:15 | April 13, 2018 12:15 | 38d 9h | 2,478 | 26K |
| 2 | January 12, 2018 05:30 | January 12, 2018 17:30 | 12h | 2,438 | 4,184 |
| 3 | February 27, 2018 15:15 | March 6, 2018 01:00 | 6d 9h | 1,938 | 3,702 |
| 4 | June 29, 2018 08:30 | June 30, 2018 04:15 | 19h 45m | 1,375 | 12K |
| 5 | July 20, 2018 20:15 | July 21, 2018 08:45 | 12h 30m | 1,240 | 5,915 |
| 6 | August 31, 2018 02:15 | August 31, 2018 09:30 | 7h 15m | 934 | 2,107 |
| 7 | June 12, 2018 10:45 | June 12, 2018 14:30 | 3h 45m | 911 | 675 |
| 8 | May 15, 2018 21:45 | May 17, 2018 00:00 | 1d 2h | 798 | 12K |
| 9 | November 25, 2018 20:15 | November 26, 2018 16:00 | 19h 45m | 717 | 2,371 |
| 10 | April 14, 2018 04:15 | April 15, 2018 18:00 | 1d 13h | 676 | 4,941 |
Outage episodes by size in 2018: 54 reached 100+ customers, 5 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 2018, 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 | 2018 | 5.3 hrs | 1.81 | 4.2 hrs | 1.64 |
| Delta Electric Power Assn | 2018 | 10.2 hrs | 5.14 | 6.7 hrs | 4.58 |
| 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 66% of Mississippi's customers in 2018; 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, 2018, 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/2018/mississippi/washington-county