County annual report · FIPS 19101
2023 Jefferson County, IA Power Outage Report
In 2023, customers in Jefferson County, IA went without power for an average of 5.4 hours, a total of 37K customer-hours (Iowa average 2.0 hours). That ranks 10th worst of 99 Iowa counties and 1395th of 2,977 nationally.
Compared with IA, the US and 2022
Coverage line is EAGLE-I's share of Iowa customers tracked each year.
Biggest outages in Jefferson County, 2023
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 29, 2023 15:00 | June 29, 2023 21:00 | 6h | 3,583 | 6,295 |
| 2 | March 31, 2023 21:15 | April 3, 2023 18:45 | 2d 21h | 1,495 | 20K |
| 3 | May 5, 2023 14:15 | May 5, 2023 19:30 | 5h 15m | 1,353 | 687 |
| 4 | November 18, 2023 16:45 | November 18, 2023 22:00 | 5h 15m | 1,019 | 941 |
| 5 | February 9, 2023 14:45 | February 9, 2023 15:15 | 30m | 1,007 | 504 |
| 6 | June 16, 2023 15:00 | June 16, 2023 15:15 | 15m | 744 | 186 |
| 7 | December 20, 2023 06:15 | December 20, 2023 07:45 | 1h 30m | 623 | 506 |
| 8 | May 13, 2023 17:30 | May 13, 2023 19:30 | 2h | 367 | 734 |
| 9 | January 29, 2023 08:45 | January 29, 2023 13:30 | 4h 45m | 311 | 1,047 |
| 10 | March 26, 2023 06:15 | March 26, 2023 08:15 | 2h | 257 | 450 |
Outage episodes by size in 2023: 18 reached 100+ customers, 5 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 Jefferson County reported on EIA Form 861 for 2023, 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 |
|---|---|---|---|---|---|
| T I P Rural Electric Coop | 2018 | 2.5 hrs | 1.33 | 2.5 hrs | 1.33 |
| Interstate Power and Light Co | - | - | - | - | - |
| Alliant Energy (Interstate Power & Light) | - | - | - | - | - |
| Access Energy Coop | - | - | - | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about n/a of Iowa's customers in 2023; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 6,879 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. Jefferson County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Jefferson County, IA annual power outage report, 2023, 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/2023/iowa/jefferson-county