County annual report · FIPS 22103
2017 St. Tammany Parish, LA Power Outage Report
In 2017, customers in St. Tammany Parish, LA went without power for an average of 2.1 hours, a total of 352K customer-hours (Louisiana average 7.2 hours). That ranks 60th worst of 64 Louisiana counties and 1586th of 2,786 nationally.
Compared with LA, the US and 2016
Coverage line is EAGLE-I's share of Louisiana customers tracked each year.
Biggest outages in St. Tammany Parish, 2017
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | July 18, 2017 13:15 | July 26, 2017 16:15 | 8d 3h | 6,567 | 14K |
| 2 | December 8, 2017 10:30 | December 12, 2017 04:45 | 3d 18h | 5,388 | 41K |
| 3 | April 3, 2017 06:00 | April 4, 2017 08:00 | 1d 2h | 4,979 | 21K |
| 4 | May 3, 2017 13:15 | May 5, 2017 02:45 | 1d 13h | 4,443 | 46K |
| 5 | April 5, 2017 16:00 | April 6, 2017 04:15 | 12h 15m | 4,376 | 8,763 |
| 6 | November 15, 2017 17:30 | November 15, 2017 22:30 | 5h | 3,448 | 996 |
| 7 | July 11, 2017 12:30 | July 17, 2017 19:00 | 6d 6h | 2,723 | 16K |
| 8 | October 22, 2017 10:45 | October 23, 2017 06:45 | 20h | 2,718 | 5,376 |
| 9 | January 2, 2017 16:45 | January 4, 2017 04:15 | 1d 11h | 2,583 | 5,619 |
| 10 | June 25, 2017 13:30 | June 25, 2017 20:15 | 6h 45m | 2,443 | 1,971 |
Outage episodes by size in 2017: 159 reached 100+ customers, 35 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. Tammany Parish reported on EIA Form 861 for 2017, 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 | 2017 | 6.5 hrs | 2.10 | 2.9 hrs | 1.48 |
| Washington-St Tammany E C, Inc | 2017 | 7.3 hrs | 3.28 | 4.5 hrs | 2.88 |
| 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 2017; 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, 2017, 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/2017/louisiana/st-tammany-parish