County annual report · FIPS 22101
2024 St. Mary Parish, LA Power Outage Report
In 2024, customers in St. Mary Parish, LA went without power for an average of 18.7 hours, a total of 518K customer-hours (Louisiana average 15.8 hours). That ranks 27th worst of 64 Louisiana counties and 540th of 2,990 nationally.
Compared with LA, the US and 2023
Coverage line is EAGLE-I's share of Louisiana customers tracked each year.
Biggest outages in St. Mary Parish, 2024
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | September 11, 2024 14:00 | September 15, 2024 14:00 | 4d | 13,865 | 459K |
| 2 | August 25, 2024 23:30 | August 26, 2024 01:15 | 1h 45m | 3,354 | 4,400 |
| 3 | April 29, 2024 13:15 | April 30, 2024 22:15 | 1d 9h | 1,997 | 4,928 |
| 4 | May 17, 2024 03:15 | May 18, 2024 18:30 | 1d 15h | 1,932 | 4,653 |
| 5 | June 1, 2024 22:15 | June 2, 2024 19:15 | 21h | 1,476 | 1,254 |
| 6 | March 5, 2024 14:15 | March 5, 2024 17:30 | 3h 15m | 1,108 | 659 |
| 7 | December 13, 2024 13:30 | December 16, 2024 23:00 | 3d 9h | 1,103 | 727 |
| 8 | July 4, 2024 20:15 | July 5, 2024 01:00 | 4h 45m | 868 | 1,943 |
| 9 | August 16, 2024 00:15 | August 16, 2024 14:30 | 14h 15m | 861 | 764 |
| 10 | July 21, 2024 19:30 | July 21, 2024 23:15 | 3h 45m | 781 | 1,089 |
Outage episodes by size in 2024: 59 reached 100+ customers, 7 reached 1,000+ customers, 1 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 St. Mary Parish reported on EIA Form 861 for 2024, 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 |
|---|---|---|---|---|---|
| Cleco Power LLC | - | - | - | - | - |
| Colquitt Electric Membership Corp | - | - | - | - | - |
| South Louisiana Elec Coop Assn | - | - | - | - | - |
| Morgan City - (LA) | - | - | - | - | - |
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 Louisiana's customers in 2024; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 27,709 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. St. Mary Parish has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), St. Mary Parish, LA annual power outage report, 2024, 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/). https://massoutage.com/reports/2024/louisiana/st-mary-parish