County annual report · FIPS 19039
2019 Clarke County, IA Power Outage Report
In 2019, customers in Clarke County, IA went without power for an average of 2.4 hours, a total of 10K customer-hours (Iowa average 2.2 hours). That ranks 47th worst of 99 Iowa counties and 1904th of 2,945 nationally.
Compared with IA, the US and 2018
Coverage line is EAGLE-I's share of Iowa customers tracked each year.
Biggest outages in Clarke County, 2019
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 24, 2019 06:30 | May 24, 2019 15:30 | 9h | 845 | 771 |
| 2 | October 31, 2019 02:45 | October 31, 2019 10:45 | 8h | 481 | 3,049 |
| 3 | November 22, 2019 19:45 | November 22, 2019 21:45 | 2h | 302 | 448 |
| 4 | June 13, 2019 21:30 | June 14, 2019 04:00 | 6h 30m | 182 | 1,063 |
| 5 | May 1, 2019 23:45 | May 2, 2019 02:00 | 2h 15m | 157 | 353 |
| 6 | August 1, 2019 00:00 | August 1, 2019 00:45 | 45m | 150 | 75 |
| 7 | January 22, 2019 18:45 | January 22, 2019 20:45 | 2h | 127 | 182 |
| 8 | August 16, 2019 00:30 | August 16, 2019 03:00 | 2h 30m | 89 | 96 |
| 9 | August 20, 2019 11:00 | August 20, 2019 18:00 | 7h | 83 | 232 |
| 10 | November 9, 2019 03:45 | November 15, 2019 00:30 | 5d 20h | 83 | 569 |
Outage episodes by size in 2019: 7 reached 100+ customers, 0 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 Clarke County reported on EIA Form 861 for 2019, 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 |
|---|---|---|---|---|---|
| Interstate Power and Light Co | - | - | - | - | - |
| Alliant Energy (Interstate Power & Light) | - | - | - | - | - |
| Clarke Electric Coop Inc - (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 2019; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 4,290 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. Clarke County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Clarke County, IA annual power outage report, 2019, 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/). https://massoutage.com/reports/2019/iowa/clarke-county