County annual report · FIPS 19187
2021 Webster County, IA Power Outage Report
In 2021, customers in Webster County, IA went without power for an average of 5.6 hours, a total of 115K customer-hours (Iowa average 2.7 hours). That ranks 26th worst of 99 Iowa counties and 1219th of 2,974 nationally.
Compared with IA, the US and 2020
Coverage line is EAGLE-I's share of Iowa customers tracked each year.
Biggest outages in Webster County, 2021
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | December 16, 2021 00:00 | December 20, 2021 13:00 | 4d 13h | 3,269 | 81K |
| 2 | December 10, 2021 20:00 | December 12, 2021 22:00 | 2d 2h | 2,976 | 19K |
| 3 | October 28, 2021 08:15 | October 28, 2021 16:45 | 8h 30m | 1,769 | 3,436 |
| 4 | June 21, 2021 00:00 | June 21, 2021 05:00 | 5h | 743 | 648 |
| 5 | August 28, 2021 12:15 | August 28, 2021 16:45 | 4h 30m | 439 | 662 |
| 6 | August 26, 2021 16:15 | August 26, 2021 19:15 | 3h | 425 | 275 |
| 7 | May 27, 2021 11:00 | May 27, 2021 16:45 | 5h 45m | 412 | 815 |
| 8 | October 18, 2021 14:30 | October 18, 2021 19:30 | 5h | 405 | 565 |
| 9 | March 15, 2021 11:30 | March 15, 2021 13:45 | 2h 15m | 367 | 645 |
| 10 | June 17, 2021 04:15 | June 17, 2021 10:45 | 6h 30m | 325 | 516 |
Outage episodes by size in 2021: 24 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 Webster County reported on EIA Form 861 for 2021, 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 | 2021 | 1.9 hrs | 1.04 | 75 min | 0.74 |
| Interstate Power and Light Co | - | - | - | - | - |
| Alliant Energy (Interstate Power & Light) | - | - | - | - | - |
| Midland Power Coop | - | - | - | - | - |
| Prairie Energy Coop | - | - | - | - | - |
| Calhoun County Elec Coop Assn | - | - | - | - | - |
| City of Stratford - (IA) | - | - | - | - | - |
| City of Callender - (IA) | - | - | - | - | - |
| City of Dayton - (IA) | - | - | - | - | - |
| City of Lehigh - (IA) | - | - | - | - | - |
| Gowrie Municipal Utilities | - | - | - | - | - |
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 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 20,411 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. Webster County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Webster County, IA annual power outage report, 2021, 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/2021/iowa/webster-county