County annual report · FIPS 19101
2025 Jefferson County, IA Power Outage Report
In 2025, customers in Jefferson County, IA went without power for an average of 2.6 hours, a total of 18K customer-hours (Iowa average 2.9 hours). That ranks 57th worst of 99 Iowa counties and 2211th of 3,000 nationally.
Compared with IA, the US and 2024
Coverage line is EAGLE-I's share of Iowa customers tracked each year.
Biggest outages in Jefferson County, 2025
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | March 15, 2025 01:00 | March 15, 2025 10:00 | 9h | 1,532 | 1,643 |
| 2 | July 12, 2025 00:30 | July 12, 2025 04:15 | 3h 45m | 1,366 | 1,752 |
| 3 | June 20, 2025 09:00 | June 20, 2025 12:00 | 3h | 1,257 | 3,291 |
| 4 | April 15, 2025 01:00 | April 15, 2025 06:45 | 5h 45m | 937 | 547 |
| 5 | September 19, 2025 10:15 | September 19, 2025 15:00 | 4h 45m | 778 | 3,332 |
| 6 | November 25, 2025 20:00 | November 25, 2025 23:45 | 3h 45m | 279 | 767 |
| 7 | December 16, 2025 03:30 | December 16, 2025 04:45 | 1h 15m | 276 | 321 |
| 8 | February 2, 2025 21:45 | February 2, 2025 23:45 | 2h | 271 | 272 |
| 9 | July 30, 2025 11:00 | July 30, 2025 16:30 | 5h 30m | 245 | 110 |
| 10 | March 13, 2025 16:30 | March 13, 2025 18:45 | 2h 15m | 193 | 434 |
Outage episodes by size in 2025: 18 reached 100+ customers, 3 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 2025, 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 2025; 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, 2025, 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/2025/iowa/jefferson-county