County annual report · FIPS 19119
2021 Lyon County, IA Power Outage Report
In 2021, customers in Lyon County, IA went without power for an average of 0.8 hours, a total of 3,952 customer-hours (Iowa average 2.7 hours). That ranks 93rd worst of 99 Iowa counties and 2741st 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 Lyon 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 | August 30, 2021 15:30 | August 30, 2021 19:15 | 3h 45m | 370 | 299 |
| 2 | October 3, 2021 05:45 | October 3, 2021 08:00 | 2h 15m | 367 | 578 |
| 3 | October 20, 2021 14:00 | October 20, 2021 15:15 | 1h 15m | 366 | 368 |
| 4 | October 21, 2021 01:00 | October 21, 2021 02:00 | 1h | 366 | 366 |
| 5 | November 1, 2021 13:30 | November 1, 2021 13:45 | 15m | 290 | 73 |
| 6 | August 26, 2021 13:45 | August 26, 2021 14:45 | 1h | 228 | 228 |
| 7 | October 13, 2021 09:15 | October 13, 2021 12:45 | 3h 30m | 163 | 328 |
| 8 | January 23, 2021 16:15 | January 23, 2021 19:30 | 3h 15m | 158 | 514 |
| 9 | December 16, 2021 01:15 | December 16, 2021 06:00 | 4h 45m | 95 | 95 |
| 10 | February 15, 2021 03:15 | February 15, 2021 04:15 | 1h | 93 | 93 |
Outage episodes by size in 2021: 8 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 Lyon 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 |
| Nobles Cooperative Electric | 2018 | 4.0 hrs | 1.09 | 4.0 hrs | 1.09 |
| Osceola Electric Coop, Inc | 2018 | 2.4 hrs | 4.21 | 2.4 hrs | 4.21 |
| Lyon Rural Electric Coop | 2018 | 34 min | 0.38 | 34 min | 0.38 |
| WAPA-- Western Area Power Administration | - | - | - | - | - |
| Interstate Power and Light Co | - | - | - | - | - |
| North West Rural Electric Coop | - | - | - | - | - |
| City of Larchwood - (IA) | - | - | - | - | - |
| Rock Rapids Municipal Utility | - | - | - | - | - |
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 ÷ 5,090 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. Lyon County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Lyon 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/lyon-county