County annual report · FIPS 19095
2018 Iowa County, IA Power Outage Report
In 2018, customers in Iowa County, IA went without power for an average of 10.2 hours, a total of 71K customer-hours (Iowa average 2.2 hours). That ranks 3rd worst of 99 Iowa counties and 535th 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 Iowa 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 | August 28, 2018 14:15 | September 4, 2018 21:15 | 7d 7h | 2,935 | 26K |
| 2 | March 24, 2018 10:30 | March 25, 2018 00:30 | 14h | 2,176 | 3,782 |
| 3 | April 14, 2018 08:00 | April 15, 2018 03:00 | 19h | 2,082 | 5,096 |
| 4 | June 19, 2018 03:00 | June 19, 2018 15:30 | 12h 30m | 1,336 | 2,525 |
| 5 | September 21, 2018 13:00 | September 21, 2018 20:15 | 7h 15m | 1,270 | 1,704 |
| 6 | March 9, 2018 16:30 | March 9, 2018 18:15 | 1h 45m | 951 | 954 |
| 7 | June 26, 2018 10:45 | June 26, 2018 13:30 | 2h 45m | 890 | 1,939 |
| 8 | August 3, 2018 02:30 | August 3, 2018 09:30 | 7h | 869 | 3,227 |
| 9 | December 20, 2018 20:30 | December 20, 2018 22:30 | 2h | 557 | 736 |
| 10 | July 29, 2018 11:15 | July 29, 2018 12:45 | 1h 30m | 546 | 274 |
Outage episodes by size in 2018: 42 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 Iowa 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 |
|---|---|---|---|---|---|
| T I P Rural Electric Coop | 2018 | 2.5 hrs | 1.33 | 2.5 hrs | 1.33 |
| Linn County REC | 2018 | 2.6 hrs | 1.13 | 2.6 hrs | 1.13 |
| Farmers Electric Coop - (IA) | 2018 | 77 min | 2.30 | 77 min | 2.30 |
| Interstate Power and Light Co | - | - | - | - | - |
| Alliant Energy (Interstate Power & Light) | - | - | - | - | - |
| East-Central Iowa Rural Elec Coop | - | - | - | - | - |
| Amana Society Service Co | - | - | - | - | - |
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 ÷ 6,965 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. Iowa County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Iowa 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/iowa-county