County annual report · FIPS 22101
2018 St. Mary Parish, LA Power Outage Report
In 2018, customers in St. Mary Parish, LA went without power for an average of 2.5 hours, a total of 69K customer-hours (Louisiana average 5.1 hours). That ranks 57th worst of 64 Louisiana counties and 1660th of 2,798 nationally.
Compared with LA, the US and 2017
Coverage line is EAGLE-I's share of Louisiana customers tracked each year.
Biggest outages in St. Mary Parish, 2018
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | May 7, 2018 23:30 | May 18, 2018 14:45 | 10d 15h | 4,239 | 13K |
| 2 | June 10, 2018 14:30 | June 11, 2018 16:15 | 1d 1h | 1,307 | 3,283 |
| 3 | April 14, 2018 19:45 | April 14, 2018 20:45 | 1h | 1,294 | 1,293 |
| 4 | March 29, 2018 10:15 | March 30, 2018 00:15 | 14h | 1,251 | 2,638 |
| 5 | April 14, 2018 12:30 | April 14, 2018 18:45 | 6h 15m | 1,214 | 2,488 |
| 6 | November 1, 2018 05:30 | November 1, 2018 15:30 | 10h | 1,099 | 1,218 |
| 7 | July 11, 2018 19:00 | July 12, 2018 07:00 | 12h | 818 | 4,550 |
| 8 | January 17, 2018 06:15 | January 17, 2018 09:30 | 3h 15m | 790 | 416 |
| 9 | March 20, 2018 10:00 | March 20, 2018 11:15 | 1h 15m | 720 | 728 |
| 10 | October 24, 2018 04:30 | October 24, 2018 09:30 | 5h | 712 | 1,196 |
Outage episodes by size in 2018: 55 reached 100+ customers, 6 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 2018, 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 89% of Louisiana's customers in 2018; 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, 2018, 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/2018/louisiana/st-mary-parish