County annual report · FIPS 19039
2020 Clarke County, IA Power Outage Report
In 2020, customers in Clarke County, IA went without power for an average of 1.0 hours, a total of 4,495 customer-hours (Iowa average 27.4 hours). That ranks 81st worst of 99 Iowa counties and 2636th 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 Clarke 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 | January 24, 2020 12:15 | January 24, 2020 19:45 | 7h 30m | 178 | 180 |
| 2 | July 19, 2020 10:15 | July 19, 2020 13:45 | 3h 30m | 87 | 264 |
| 3 | November 12, 2020 14:45 | November 12, 2020 16:45 | 2h | 84 | 64 |
| 4 | August 10, 2020 16:15 | August 11, 2020 15:15 | 23h | 82 | 1,523 |
| 5 | January 22, 2020 20:30 | January 22, 2020 20:45 | 15m | 69 | 17 |
| 6 | November 24, 2020 19:30 | November 24, 2020 20:15 | 45m | 68 | 51 |
| 7 | May 1, 2020 19:45 | May 1, 2020 21:15 | 1h 30m | 57 | 86 |
| 8 | May 14, 2020 21:15 | May 14, 2020 22:45 | 1h 30m | 57 | 72 |
| 9 | June 8, 2020 00:00 | June 8, 2020 03:30 | 3h 30m | 57 | 200 |
| 10 | May 14, 2020 06:45 | May 14, 2020 10:15 | 3h 30m | 54 | 73 |
Outage episodes by size in 2020: 1 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 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 |
|---|---|---|---|---|---|
| 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 91% of Iowa's customers in 2020; 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, 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/). https://massoutage.com/reports/2020/iowa/clarke-county