County annual report · FIPS 19101
2020 Jefferson County, IA Power Outage Report
In 2020, customers in Jefferson County, IA went without power for an average of 6.6 hours, a total of 45K customer-hours (Iowa average 27.4 hours). That ranks 26th worst of 99 Iowa counties and 1146th of 3,019 nationally.
Compared with IA, the US and 2019
Coverage line is EAGLE-I's share of Iowa customers tracked each year.
Biggest outages in Jefferson County, 2020
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | September 8, 2020 06:45 | September 9, 2020 04:15 | 21h 30m | 4,656 | 7,045 |
| 2 | July 15, 2020 09:45 | July 15, 2020 14:15 | 4h 30m | 4,622 | 14K |
| 3 | January 11, 2020 01:00 | January 12, 2020 03:45 | 1d 2h | 1,627 | 7,930 |
| 4 | August 10, 2020 17:30 | August 11, 2020 14:30 | 21h | 1,543 | 3,671 |
| 5 | March 14, 2020 17:00 | March 14, 2020 17:30 | 30m | 1,017 | 509 |
| 6 | July 11, 2020 20:00 | July 13, 2020 12:30 | 1d 16h | 825 | 3,108 |
| 7 | February 17, 2020 11:15 | February 17, 2020 13:30 | 2h 15m | 801 | 1,455 |
| 8 | March 28, 2020 22:00 | March 28, 2020 23:00 | 1h | 799 | 799 |
| 9 | May 26, 2020 22:45 | May 27, 2020 01:45 | 3h | 373 | 958 |
| 10 | October 12, 2020 02:00 | October 12, 2020 03:15 | 1h 15m | 366 | 389 |
Outage episodes by size in 2020: 15 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 2020, 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 91% of Iowa's customers in 2020; 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, 2020, 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/2020/iowa/jefferson-county