County annual report · FIPS 19075
2017 Grundy County, IA Power Outage Report
In 2017, customers in Grundy County, IA went without power for an average of 3.9 hours, a total of 22K customer-hours (Iowa average 2.0 hours). That ranks 21st worst of 99 Iowa counties and 1128th of 2,786 nationally.
Compared with IA, the US and 2016
Coverage line is EAGLE-I's share of Iowa customers tracked each year.
Biggest outages in Grundy County, 2017
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | April 15, 2017 23:30 | April 16, 2017 01:30 | 2h | 867 | 851 |
| 2 | May 17, 2017 18:45 | May 19, 2017 10:00 | 1d 15h | 779 | 11K |
| 3 | January 20, 2017 00:45 | January 20, 2017 01:30 | 45m | 755 | 566 |
| 4 | August 3, 2017 13:15 | August 3, 2017 15:45 | 2h 30m | 636 | 994 |
| 5 | July 10, 2017 08:30 | July 10, 2017 15:45 | 7h 15m | 631 | 1,239 |
| 6 | April 28, 2017 17:45 | April 28, 2017 20:30 | 2h 45m | 625 | 1,222 |
| 7 | February 4, 2017 17:45 | February 4, 2017 19:00 | 1h 15m | 496 | 125 |
| 8 | October 26, 2017 16:00 | October 26, 2017 18:00 | 2h | 467 | 703 |
| 9 | January 10, 2017 16:15 | January 10, 2017 17:45 | 1h 30m | 410 | 613 |
| 10 | June 19, 2017 18:15 | June 19, 2017 19:00 | 45m | 307 | 156 |
Outage episodes by size in 2017: 20 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 Grundy County reported on EIA Form 861 for 2017, 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 n/a of Iowa's customers in 2017; 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, 2017, 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/2017/iowa/grundy-county