County annual report · FIPS 22005
2021 Ascension Parish, LA Power Outage Report
In 2021, customers in Ascension Parish, LA went without power for an average of 197.4 hours, a total of 10.2M customer-hours (Louisiana average 99.7 hours). That ranks 12th worst of 64 Louisiana counties and 27th 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 Ascension 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 28, 2021 05:45 | October 21, 2021 02:00 | 53d 20h | 54,507 | 9.6M |
| 2 | April 19, 2021 15:00 | April 27, 2021 20:30 | 8d 5h | 8,277 | 58K |
| 3 | April 10, 2021 08:30 | April 12, 2021 03:15 | 1d 18h | 7,722 | 89K |
| 4 | February 15, 2021 09:00 | February 28, 2021 02:30 | 12d 17h | 5,252 | 113K |
| 5 | October 21, 2021 05:16 | November 17, 2021 21:30 | 27d 16h | 4,266 | 29K |
| 6 | March 28, 2021 10:30 | March 28, 2021 13:00 | 2h 30m | 4,195 | 6,760 |
| 7 | June 6, 2021 11:30 | June 6, 2021 22:45 | 11h 15m | 4,040 | 2,471 |
| 8 | July 19, 2021 13:00 | August 27, 2021 02:00 | 38d 13h | 3,937 | 50K |
| 9 | June 17, 2021 18:15 | June 18, 2021 01:15 | 7h | 3,901 | 1,989 |
| 10 | June 15, 2021 16:00 | June 17, 2021 04:45 | 1d 12h | 3,890 | 6,910 |
Outage episodes by size in 2021: 80 reached 100+ customers, 30 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 Ascension 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 |
| Dixie Electric Membership Corp - (LA) | 2021 | 129.7 hrs | 6.65 | 4.0 hrs | 2.89 |
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 ÷ 51,706 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. Ascension Parish has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Ascension 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/ascension-parish