County annual report · FIPS 19101
2015 Jefferson County, IA Power Outage Report
In 2015, customers in Jefferson County, IA went without power for an average of 3.1 hours, a total of 21K customer-hours (Iowa average 1.1 hours). That ranks 12th worst of 99 Iowa counties and 879th of 2,484 nationally.
Compared with IA, the US
Coverage line is EAGLE-I's share of Iowa customers tracked each year.
Biggest outages in Jefferson County, 2015
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 21, 2015 00:15 | June 21, 2015 23:45 | 23h 30m | 3,906 | 13K |
| 2 | November 21, 2015 14:30 | November 21, 2015 22:30 | 8h | 975 | 913 |
| 3 | January 8, 2015 16:30 | January 8, 2015 17:15 | 45m | 871 | 255 |
| 4 | May 26, 2015 15:00 | May 26, 2015 16:45 | 1h 45m | 871 | 474 |
| 5 | October 10, 2015 21:00 | October 10, 2015 23:00 | 2h | 677 | 1,088 |
| 6 | November 6, 2015 19:00 | November 7, 2015 00:00 | 5h | 488 | 195 |
| 7 | July 6, 2015 22:45 | July 7, 2015 01:45 | 3h | 439 | 673 |
| 8 | June 12, 2015 02:45 | June 12, 2015 09:15 | 6h 30m | 194 | 1,102 |
| 9 | May 14, 2015 10:45 | May 14, 2015 14:45 | 4h | 191 | 756 |
| 10 | May 17, 2015 09:00 | May 17, 2015 10:00 | 1h | 187 | 172 |
Outage episodes by size in 2015: 14 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 Jefferson County reported on EIA Form 861 for 2015, 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 | 2015 | 2.1 hrs | 1.93 | 2.1 hrs | 1.93 |
| 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 2015; 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, 2015, 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/2015/iowa/jefferson-county