County annual report · FIPS 28047
2020 Harrison County, MS Power Outage Report
In 2020, customers in Harrison County, MS went without power for an average of 49.5 hours, a total of 5.4M customer-hours (Mississippi average 18.5 hours). That ranks 12th worst of 79 Mississippi counties and 164th of 3,019 nationally.
Compared with MS, the US and 2019
Coverage line is EAGLE-I's share of Mississippi customers tracked each year.
Biggest outages in Harrison County, 2020
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | October 28, 2020 22:00 | November 7, 2020 22:30 | 10d | 97,348 | 5.2M |
| 2 | October 27, 2020 13:15 | October 27, 2020 16:45 | 3h 30m | 10,916 | 2,769 |
| 3 | July 1, 2020 20:45 | July 2, 2020 04:45 | 8h | 5,112 | 2,949 |
| 4 | June 24, 2020 13:00 | June 25, 2020 04:15 | 15h 15m | 4,685 | 6,412 |
| 5 | June 6, 2020 03:45 | June 11, 2020 16:45 | 5d 13h | 4,643 | 20K |
| 6 | September 27, 2020 16:45 | September 27, 2020 19:45 | 3h | 3,425 | 878 |
| 7 | April 20, 2020 03:15 | April 20, 2020 11:45 | 8h 30m | 3,262 | 7,452 |
| 8 | December 7, 2020 19:30 | December 12, 2020 10:00 | 4d 14h | 2,732 | 8,836 |
| 9 | December 12, 2020 16:15 | December 28, 2020 20:30 | 16d 4h | 2,730 | 13K |
| 10 | November 26, 2020 21:30 | November 27, 2020 11:15 | 13h 45m | 2,304 | 6,253 |
Outage episodes by size in 2020: 115 reached 100+ customers, 25 reached 1,000+ customers, 2 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 2020, 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 | 2020 | 29.7 hrs | 1.95 | 87 min | 0.95 |
| Singing River Elec Cooperative | 2020 | 70.0 hrs | - | 2.8 hrs | - |
| Coast Electric Power Assn - (MS) | 2020 | 73.1 hrs | 3.34 | 84 min | 1.18 |
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 2020; 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, 2020, 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/2020/mississippi/harrison-county