County annual report · FIPS 22103
2024 St. Tammany Parish, LA Power Outage Report
In 2024, customers in St. Tammany Parish, LA went without power for an average of 8.3 hours, a total of 1.4M customer-hours (Louisiana average 15.8 hours). That ranks 50th worst of 64 Louisiana counties and 1087th 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. Tammany 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 10:45 | September 19, 2024 00:15 | 7d 13h | 33,719 | 494K |
| 2 | April 10, 2024 12:45 | April 12, 2024 06:15 | 1d 17h | 28,799 | 243K |
| 3 | May 17, 2024 03:15 | May 21, 2024 02:00 | 3d 22h | 21,775 | 163K |
| 4 | August 14, 2024 11:30 | August 20, 2024 02:15 | 5d 14h | 11,463 | 46K |
| 5 | April 12, 2024 09:30 | April 13, 2024 03:30 | 18h | 8,869 | 5,672 |
| 6 | January 12, 2024 15:30 | January 18, 2024 02:45 | 5d 11h | 8,464 | 13K |
| 7 | July 18, 2024 19:15 | July 20, 2024 03:00 | 1d 7h | 6,433 | 21K |
| 8 | June 4, 2024 04:45 | June 6, 2024 21:30 | 2d 16h | 5,512 | 20K |
| 9 | October 4, 2024 17:45 | October 4, 2024 22:45 | 5h | 4,481 | 3,479 |
| 10 | April 9, 2024 13:00 | April 9, 2024 23:15 | 10h 15m | 4,415 | 3,364 |
Outage episodes by size in 2024: 201 reached 100+ customers, 43 reached 1,000+ customers, 4 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. Tammany 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 |
|---|---|---|---|---|---|
| Entergy Louisiana LLC | 2024 | 10.2 hrs | 2.04 | 3.6 hrs | 1.55 |
| Washington-St Tammany E C, Inc | 2024 | 25.1 hrs | 4.93 | 4.0 hrs | 2.61 |
| Cleco Power LLC | - | - | - | - | - |
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 ÷ 164,188 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. Tammany Parish has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), St. Tammany 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/); EIA Form 861 (utility reliability) (https://www.eia.gov/electricity/data/eia861/). https://massoutage.com/reports/2024/louisiana/st-tammany-parish