County annual report · FIPS 22007
2021 Assumption Parish, LA Power Outage Report
In 2021, customers in Assumption Parish, LA went without power for an average of 247.5 hours, a total of 1.7M customer-hours (Louisiana average 99.7 hours). That ranks 9th worst of 64 Louisiana counties and 19th of 2,974 nationally.
Compared with LA, the US and 2020
Coverage line is EAGLE-I's share of Louisiana customers tracked each year.
Biggest outages in Assumption Parish, 2021
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | August 29, 2021 12:45 | September 14, 2021 07:00 | 15d 18h | 10,044 | 1.5M |
| 2 | October 14, 2021 12:15 | October 14, 2021 16:30 | 4h 15m | 9,048 | 13K |
| 3 | March 23, 2021 15:30 | March 23, 2021 18:15 | 2h 45m | 4,730 | 2,515 |
| 4 | May 8, 2021 14:15 | May 8, 2021 16:00 | 1h 45m | 3,841 | 962 |
| 5 | May 20, 2021 13:30 | May 20, 2021 19:45 | 6h 15m | 3,415 | 15K |
| 6 | May 12, 2021 03:45 | May 12, 2021 19:45 | 16h | 3,182 | 13K |
| 7 | February 25, 2021 04:45 | February 25, 2021 10:15 | 5h 30m | 2,229 | 12K |
| 8 | March 23, 2021 03:15 | March 23, 2021 11:45 | 8h 30m | 2,221 | 18K |
| 9 | October 28, 2021 19:15 | October 29, 2021 00:45 | 5h 30m | 1,371 | 1,018 |
| 10 | December 4, 2021 13:00 | December 4, 2021 17:15 | 4h 15m | 1,363 | 4,067 |
Outage episodes by size in 2021: 42 reached 100+ customers, 16 reached 1,000+ customers, 1 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 Assumption Parish reported on EIA Form 861 for 2021, 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 | 2021 | 111.5 hrs | 3.16 | 4.1 hrs | 1.62 |
| Cleco Power LLC | - | - | - | - | - |
| South Louisiana Elec Coop Assn | - | - | - | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 90% of Louisiana's customers in 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 6,738 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. Assumption Parish has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Assumption Parish, LA annual power outage report, 2021, 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/2021/louisiana/assumption-parish