County annual report · FIPS 19075
2020 Grundy County, IA Power Outage Report
In 2020, customers in Grundy County, IA went without power for an average of 24.5 hours, a total of 135K customer-hours (Iowa average 27.4 hours). That ranks 16th worst of 99 Iowa counties and 352nd 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 Grundy 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 | August 10, 2020 17:15 | August 22, 2020 21:45 | 12d 4h | 2,341 | 125K |
| 2 | January 18, 2020 14:30 | January 18, 2020 17:15 | 2h 45m | 792 | 2,178 |
| 3 | November 15, 2020 12:45 | November 15, 2020 15:15 | 2h 30m | 766 | 1,915 |
| 4 | June 5, 2020 01:00 | June 5, 2020 05:30 | 4h 30m | 467 | 727 |
| 5 | August 2, 2020 09:45 | August 2, 2020 12:45 | 3h | 452 | 1,002 |
| 6 | August 9, 2020 12:45 | August 9, 2020 15:45 | 3h | 275 | 551 |
| 7 | November 16, 2020 20:45 | November 17, 2020 21:15 | 1d | 195 | 411 |
| 8 | November 19, 2020 16:30 | November 20, 2020 16:00 | 23h 30m | 123 | 1,386 |
| 9 | November 18, 2020 16:30 | November 18, 2020 21:30 | 5h | 96 | 99 |
| 10 | April 20, 2020 22:15 | April 20, 2020 23:15 | 1h | 60 | 60 |
Outage episodes by size in 2020: 8 reached 100+ customers, 1 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 Grundy 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) | - | - | - | - | - |
| Midland Power Coop | - | - | - | - | - |
| Grundy County Rural Elec Coop | - | - | - | - | - |
| Cedar Falls Utilities | - | - | - | - | - |
| City of Dike | - | - | - | - | - |
| Grundy Center Mun Light & Power | - | - | - | - | - |
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 ÷ 5,507 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. Grundy County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Grundy 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/grundy-county