County annual report · FIPS 22101
2025 St. Mary Parish, LA Power Outage Report
In 2025, customers in St. Mary Parish, LA went without power for an average of 1.7 hours, a total of 47K customer-hours (Louisiana average 6.2 hours). That ranks 64th worst of 64 Louisiana counties and 2535th of 3,000 nationally.
Compared with LA, the US and 2024
Coverage line is EAGLE-I's share of Louisiana customers tracked each year.
Biggest outages in St. Mary Parish, 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 16, 2025 07:30 | June 16, 2025 09:00 | 1h 30m | 4,952 | 6,191 |
| 2 | June 10, 2025 21:00 | June 11, 2025 04:45 | 7h 45m | 1,190 | 1,668 |
| 3 | July 17, 2025 19:45 | July 17, 2025 21:00 | 1h 15m | 1,114 | 1,393 |
| 4 | March 29, 2025 21:30 | March 29, 2025 22:45 | 1h 15m | 1,112 | 1,390 |
| 5 | December 8, 2025 14:15 | December 8, 2025 16:00 | 1h 45m | 1,095 | 1,112 |
| 6 | October 18, 2025 07:15 | October 18, 2025 08:15 | 1h | 786 | 786 |
| 7 | November 16, 2025 14:45 | November 16, 2025 19:45 | 5h | 753 | 831 |
| 8 | March 24, 2025 12:15 | March 24, 2025 17:00 | 4h 45m | 731 | 1,021 |
| 9 | February 15, 2025 16:30 | February 15, 2025 21:45 | 5h 15m | 705 | 1,940 |
| 10 | March 3, 2025 21:45 | March 4, 2025 01:30 | 3h 45m | 629 | 982 |
Outage episodes by size in 2025: 39 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 St. Mary Parish 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 |
|---|---|---|---|---|---|
| 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 2025; 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, 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/). https://massoutage.com/reports/2025/louisiana/st-mary-parish