County annual report · FIPS 28091
2021 Marion County, MS Power Outage Report
In 2021, customers in Marion County, MS went without power for an average of 13.0 hours, a total of 152K customer-hours (Mississippi average 17.2 hours). That ranks 35th worst of 78 Mississippi counties and 637th of 2,974 nationally.
Compared with MS, the US and 2020
Coverage line is EAGLE-I's share of Mississippi customers tracked each year.
Biggest outages in Marion County, 2021
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | April 10, 2021 05:45 | April 11, 2021 21:45 | 1d 16h | 6,669 | 59K |
| 2 | August 30, 2021 01:30 | August 31, 2021 05:00 | 1d 3h | 3,568 | 37K |
| 3 | February 15, 2021 12:15 | February 18, 2021 04:00 | 2d 15h | 1,907 | 24K |
| 4 | March 17, 2021 19:15 | March 19, 2021 18:00 | 1d 22h | 1,486 | 7,952 |
| 5 | October 6, 2021 14:00 | October 21, 2021 02:00 | 14d 12h | 1,246 | 3,138 |
| 6 | November 2, 2021 15:30 | November 2, 2021 18:15 | 2h 45m | 867 | 456 |
| 7 | July 27, 2021 12:45 | July 27, 2021 20:00 | 7h 15m | 848 | 260 |
| 8 | January 7, 2021 09:30 | January 7, 2021 10:30 | 1h | 594 | 594 |
| 9 | May 19, 2021 16:30 | May 19, 2021 19:30 | 3h | 544 | 1,077 |
| 10 | June 24, 2021 23:30 | June 25, 2021 02:00 | 2h 30m | 522 | 397 |
Outage episodes by size in 2021: 31 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 Marion County reported on EIA Form 861 for 2021, 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 | 2021 | 5.9 hrs | 1.65 | 82 min | 1.01 |
| Pearl River Valley El Pwr Assn | 2021 | 6.8 hrs | 2.45 | 2.5 hrs | 1.80 |
| Magnolia Electric Power Assn | 2021 | 89.6 hrs | - | - | - |
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 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 11,625 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. Marion County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Marion County, MS annual power outage report, 2021, 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/2021/mississippi/marion-county