County annual report · FIPS 22109
2018 Terrebonne Parish, LA Power Outage Report
In 2018, customers in Terrebonne Parish, LA went without power for an average of 5.7 hours, a total of 231K customer-hours (Louisiana average 5.1 hours). That ranks 38th worst of 64 Louisiana counties and 950th 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 Terrebonne 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 24, 2018 08:15 | May 24, 2018 23:15 | 15h | 5,959 | 25K |
| 2 | August 31, 2018 17:45 | September 4, 2018 19:00 | 4d 1h | 5,055 | 18K |
| 3 | October 5, 2018 21:00 | October 6, 2018 06:30 | 9h 30m | 4,130 | 9,234 |
| 4 | August 11, 2018 16:15 | August 11, 2018 17:15 | 1h | 3,862 | 971 |
| 5 | February 21, 2018 01:15 | February 21, 2018 04:30 | 3h 15m | 3,617 | 2,580 |
| 6 | February 9, 2018 14:30 | February 9, 2018 22:00 | 7h 30m | 3,305 | 8,633 |
| 7 | January 16, 2018 20:45 | January 17, 2018 00:45 | 4h | 3,095 | 5,435 |
| 8 | July 10, 2018 05:00 | July 12, 2018 18:45 | 2d 13h | 2,897 | 22K |
| 9 | June 18, 2018 12:15 | June 19, 2018 08:30 | 20h 15m | 2,765 | 9,544 |
| 10 | May 29, 2018 22:45 | May 30, 2018 04:45 | 6h | 2,356 | 1,985 |
Outage episodes by size in 2018: 77 reached 100+ customers, 30 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 Terrebonne 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 |
|---|---|---|---|---|---|
| Entergy Louisiana LLC | 2018 | 4.6 hrs | 1.84 | 3.5 hrs | 1.63 |
| South Louisiana Elec Coop Assn | - | - | - | - | - |
| Terrebonne Parish Consol Gov't | - | - | - | - | - |
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 ÷ 40,577 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. Terrebonne Parish has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Terrebonne 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/); EIA Form 861 (utility reliability) (https://www.eia.gov/electricity/data/eia861/). https://massoutage.com/reports/2018/louisiana/terrebonne-parish