County annual report · FIPS 19115
2021 Louisa County, IA Power Outage Report
In 2021, customers in Louisa County, IA went without power for an average of 3.2 hours, a total of 15K customer-hours (Iowa average 2.7 hours). That ranks 43rd worst of 99 Iowa counties and 1777th of 2,974 nationally.
Compared with IA, the US and 2020
Coverage line is EAGLE-I's share of Iowa customers tracked each year.
Biggest outages in Louisa County, 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 | June 22, 2021 12:45 | June 22, 2021 15:15 | 2h 30m | 1,406 | 1,800 |
| 2 | January 4, 2021 12:30 | January 4, 2021 22:15 | 9h 45m | 547 | 1,777 |
| 3 | March 11, 2021 08:15 | March 11, 2021 16:15 | 8h | 528 | 1,062 |
| 4 | December 16, 2021 03:15 | December 16, 2021 23:00 | 19h 45m | 455 | 1,774 |
| 5 | June 1, 2021 21:00 | June 2, 2021 01:00 | 4h | 444 | 613 |
| 6 | October 21, 2021 12:15 | October 21, 2021 14:00 | 1h 45m | 441 | 114 |
| 7 | August 11, 2021 12:45 | August 12, 2021 01:45 | 13h | 426 | 997 |
| 8 | October 24, 2021 11:45 | October 24, 2021 13:30 | 1h 45m | 383 | 669 |
| 9 | August 29, 2021 12:00 | August 29, 2021 13:15 | 1h 15m | 332 | 190 |
| 10 | October 25, 2021 17:45 | October 25, 2021 21:00 | 3h 15m | 330 | 169 |
Outage episodes by size in 2021: 18 reached 100+ customers, 1 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 Louisa County 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 |
|---|---|---|---|---|---|
| Eastern Iowa Light & Power Coop | 2021 | 2.1 hrs | 1.31 | 1.8 hrs | 1.22 |
| Interstate Power and Light Co | - | - | - | - | - |
| Access Energy Coop | - | - | - | - | - |
| Waverly Municipal Elec Utility | - | - | - | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 91% of Iowa's customers in 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 4,554 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. Louisa County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Louisa County, IA 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/iowa/louisa-county