County annual report · FIPS 28047
2025 Harrison County, MS Power Outage Report
In 2025, customers in Harrison County, MS went without power for an average of 1.5 hours, a total of 162K customer-hours (Mississippi average 7.5 hours). That ranks 74th worst of 81 Mississippi counties and 2614th of 3,000 nationally.
Compared with MS, the US and 2024
Coverage line is EAGLE-I's share of Mississippi customers tracked each year.
Biggest outages in Harrison County, 2025
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | June 2, 2025 06:30 | June 2, 2025 21:15 | 14h 45m | 4,210 | 3,109 |
| 2 | May 3, 2025 01:00 | May 4, 2025 06:00 | 1d 5h | 3,614 | 8,523 |
| 3 | March 2, 2025 13:45 | March 11, 2025 22:15 | 9d 8h | 3,264 | 7,945 |
| 4 | May 20, 2025 11:00 | May 29, 2025 18:00 | 9d 7h | 2,955 | 6,336 |
| 5 | December 9, 2025 14:00 | December 10, 2025 00:00 | 10h | 2,856 | 1,316 |
| 6 | July 1, 2025 21:00 | October 2, 2025 00:15 | 92d 3h | 2,586 | 46K |
| 7 | November 18, 2025 06:45 | November 18, 2025 09:45 | 3h | 2,495 | 1,873 |
| 8 | June 18, 2025 13:00 | June 19, 2025 00:30 | 11h 30m | 2,485 | 846 |
| 9 | May 15, 2025 03:00 | May 15, 2025 08:30 | 5h 30m | 2,213 | 2,814 |
| 10 | March 28, 2025 01:15 | March 28, 2025 01:45 | 30m | 2,201 | 551 |
Outage episodes by size in 2025: 89 reached 100+ customers, 24 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 Harrison County reported on EIA Form 861 for 2025, 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 |
|---|---|---|---|---|---|
| Mississippi Power Co | 2024 | 2.1 hrs | 1.12 | 82 min | 0.91 |
| Singing River Elec Cooperative | 2024 | 4.1 hrs | - | 2.8 hrs | - |
| Coast Electric Power Assn - (MS) | 2024 | 4.6 hrs | 2.41 | 1.7 hrs | 1.41 |
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 2025; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 109,081 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. Harrison County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Harrison County, MS annual power outage report, 2025, 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/2025/mississippi/harrison-county