County annual report · FIPS 19175
2018 Union County, IA Power Outage Report
In 2018, customers in Union County, IA went without power for an average of 2.7 hours, a total of 18K customer-hours (Iowa average 2.2 hours). That ranks 32nd worst of 99 Iowa counties and 1601st of 2,798 nationally.
Compared with IA, the US and 2017
Coverage line is EAGLE-I's share of Iowa customers tracked each year.
Biggest outages in Union County, 2018
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | May 28, 2018 23:30 | May 29, 2018 00:45 | 1h 15m | 1,897 | 2,013 |
| 2 | August 23, 2018 18:30 | August 23, 2018 19:15 | 45m | 1,895 | 474 |
| 3 | June 28, 2018 17:00 | June 29, 2018 14:30 | 21h 30m | 1,725 | 4,880 |
| 4 | April 19, 2018 15:45 | April 19, 2018 17:15 | 1h 30m | 672 | 455 |
| 5 | June 11, 2018 05:15 | June 11, 2018 21:00 | 15h 45m | 585 | 1,913 |
| 6 | March 16, 2018 18:30 | March 16, 2018 19:30 | 1h | 577 | 290 |
| 7 | May 29, 2018 03:00 | May 29, 2018 03:30 | 30m | 501 | 138 |
| 8 | May 29, 2018 23:30 | May 30, 2018 02:30 | 3h | 351 | 741 |
| 9 | May 1, 2018 12:15 | May 1, 2018 14:00 | 1h 45m | 319 | 113 |
| 10 | January 22, 2018 18:30 | January 22, 2018 21:30 | 3h | 304 | 592 |
Outage episodes by size in 2018: 17 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 Union County reported on EIA Form 861 for 2018, 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 |
|---|---|---|---|---|---|
| Southwest Iowa Rural Elec Coop | 2018 | 2.4 hrs | 1.69 | 1.6 hrs | 1.21 |
| Farmers Electric Coop, Inc - (IA) | 2018 | 5.9 hrs | 1.44 | 2.1 hrs | 1.26 |
| WAPA-- Western Area Power Administration | - | - | - | - | - |
| Interstate Power and Light Co | - | - | - | - | - |
| Alliant Energy (Interstate Power & Light) | - | - | - | - | - |
| Clarke Electric Coop Inc - (IA) | - | - | - | - | - |
| City of Afton- (IA) | - | - | - | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 89% of Iowa's customers in 2018; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 6,645 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. Union County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Union County, IA annual power outage report, 2018, 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/2018/iowa/union-county