County annual report · FIPS 19181
2018 Warren County, IA Power Outage Report
In 2018, customers in Warren County, IA went without power for an average of 2.5 hours, a total of 60K customer-hours (Iowa average 2.2 hours). That ranks 35th worst of 99 Iowa counties and 1655th 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 Warren 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 | June 28, 2018 17:30 | June 29, 2018 02:45 | 9h 15m | 3,950 | 11K |
| 2 | June 29, 2018 03:30 | June 30, 2018 05:30 | 1d 2h | 3,284 | 15K |
| 3 | July 2, 2018 22:15 | July 3, 2018 04:30 | 6h 15m | 1,988 | 8,515 |
| 4 | November 17, 2018 13:45 | November 17, 2018 18:45 | 5h | 1,746 | 1,310 |
| 5 | August 1, 2018 21:45 | August 2, 2018 03:00 | 5h 15m | 1,698 | 2,831 |
| 6 | August 28, 2018 04:00 | August 28, 2018 05:45 | 1h 45m | 1,283 | 1,413 |
| 7 | June 4, 2018 12:45 | June 4, 2018 17:15 | 4h 30m | 809 | 3,233 |
| 8 | August 28, 2018 11:00 | August 29, 2018 00:30 | 13h 30m | 724 | 1,626 |
| 9 | May 28, 2018 16:30 | May 28, 2018 19:45 | 3h 15m | 669 | 211 |
| 10 | March 29, 2018 16:30 | March 29, 2018 18:00 | 1h 30m | 515 | 773 |
Outage episodes by size in 2018: 26 reached 100+ customers, 6 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 Warren 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 |
|---|---|---|---|---|---|
| MidAmerican Energy Co | 2018 | 1.9 hrs | 1.18 | 75 min | 0.96 |
| Indianola Municipal Utilities | 2016 | 29 min | 0.76 | 29 min | 0.76 |
| Interstate Power and Light Co | - | - | - | - | - |
| Alliant Energy (Interstate Power & Light) | - | - | - | - | - |
| Clarke Electric Coop Inc - (IA) | - | - | - | - | - |
| Pella Cooperative Elec Assn | - | - | - | - | - |
| City of Carlisle- (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 ÷ 23,806 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. Warren County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Warren 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/warren-county