County annual report · FIPS 28151
2015 Washington County, MS Power Outage Report
In 2015, customers in Washington County, MS went without power for an average of 3.9 hours, a total of 97K customer-hours (Mississippi average 2.6 hours). That ranks 22nd worst of 70 Mississippi counties and 726th of 2,484 nationally.
Compared with MS, the US
Coverage line is EAGLE-I's share of Mississippi customers tracked each year.
Biggest outages in Washington County, 2015
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 15, 2015 22:30 | May 16, 2015 06:45 | 8h 15m | 2,501 | 5,585 |
| 2 | August 27, 2015 14:15 | August 27, 2015 17:15 | 3h | 2,464 | 1,259 |
| 3 | November 7, 2015 16:30 | November 8, 2015 04:15 | 11h 45m | 2,136 | 4,664 |
| 4 | February 11, 2015 19:45 | February 12, 2015 00:00 | 4h 15m | 1,930 | 495 |
| 5 | April 23, 2015 13:30 | April 23, 2015 17:30 | 4h | 1,927 | 1,017 |
| 6 | January 9, 2015 21:00 | January 10, 2015 03:30 | 6h 30m | 1,639 | 5,996 |
| 7 | October 25, 2015 18:15 | October 27, 2015 02:00 | 1d 7h | 1,475 | 4,107 |
| 8 | November 27, 2015 23:45 | November 28, 2015 02:00 | 2h 15m | 1,024 | 778 |
| 9 | November 17, 2015 22:00 | November 18, 2015 15:00 | 17h | 997 | 4,993 |
| 10 | July 25, 2015 14:15 | July 27, 2015 01:15 | 1d 11h | 977 | 3,834 |
Outage episodes by size in 2015: 73 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 2015, 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 | 2015 | 6.1 hrs | 2.02 | 4.2 hrs | 1.71 |
| Delta Electric Power Assn | 2015 | 15.6 hrs | 4.09 | 5.9 hrs | 3.47 |
| Twin County Electric Pwr Assn | 2015 | 3.8 hrs | - | 3.7 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 2015; 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, 2015, 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/2015/mississippi/washington-county