County annual report · FIPS 28151
2017 Washington County, MS Power Outage Report
In 2017, customers in Washington County, MS went without power for an average of 5.8 hours, a total of 147K customer-hours (Mississippi average 6.6 hours). That ranks 36th worst of 77 Mississippi counties and 868th of 2,786 nationally.
Compared with MS, the US and 2016
Coverage line is EAGLE-I's share of Mississippi customers tracked each year.
Biggest outages in Washington County, 2017
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 20, 2017 03:30 | December 20, 2017 17:15 | 13h 45m | 3,245 | 11K |
| 2 | April 2, 2017 22:15 | April 5, 2017 00:00 | 2d 1h | 3,200 | 33K |
| 3 | May 31, 2017 02:30 | May 31, 2017 04:00 | 1h 30m | 2,857 | 1,503 |
| 4 | April 26, 2017 18:45 | April 27, 2017 23:30 | 1d 4h | 1,874 | 4,775 |
| 5 | June 16, 2017 21:00 | June 18, 2017 23:45 | 2d 2h | 1,775 | 15K |
| 6 | November 25, 2017 13:15 | November 25, 2017 17:15 | 4h | 1,567 | 3,278 |
| 7 | June 24, 2017 14:45 | June 24, 2017 18:15 | 3h 30m | 1,369 | 410 |
| 8 | October 15, 2017 19:15 | October 15, 2017 23:30 | 4h 15m | 1,277 | 1,611 |
| 9 | October 10, 2017 02:00 | October 10, 2017 10:15 | 8h 15m | 1,267 | 2,093 |
| 10 | April 29, 2017 19:30 | May 1, 2017 02:00 | 1d 6h | 1,040 | 3,681 |
Outage episodes by size in 2017: 71 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 2017, 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 | 2017 | 10.6 hrs | 2.34 | 3.2 hrs | 1.42 |
| Delta Electric Power Assn | 2017 | 32.3 hrs | 4.72 | 6.7 hrs | 3.85 |
| Twin County Electric Pwr Assn | 2017 | 3.6 hrs | - | 3.5 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 2017; 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, 2017, 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/2017/mississippi/washington-county