County annual report · FIPS 19075
2015 Grundy County, IA Power Outage Report
In 2015, customers in Grundy County, IA went without power for an average of 0.6 hours, a total of 3,297 customer-hours (Iowa average 1.1 hours). That ranks 71st worst of 99 Iowa counties and 2006th of 2,484 nationally.
Compared with IA, the US
Coverage line is EAGLE-I's share of Iowa customers tracked each year.
Biggest outages in Grundy County, 2015
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | February 13, 2015 19:45 | February 13, 2015 20:30 | 45m | 1,543 | 759 |
| 2 | August 19, 2015 15:15 | August 19, 2015 16:00 | 45m | 393 | 100 |
| 3 | January 13, 2015 23:15 | January 14, 2015 02:30 | 3h 15m | 329 | 429 |
| 4 | May 20, 2015 08:15 | May 20, 2015 10:00 | 1h 45m | 291 | 509 |
| 5 | September 7, 2015 02:45 | September 7, 2015 06:45 | 4h | 165 | 285 |
| 6 | August 31, 2015 00:00 | August 31, 2015 02:45 | 2h 45m | 63 | 169 |
| 7 | November 26, 2015 06:30 | November 26, 2015 09:30 | 3h | 52 | 106 |
| 8 | June 22, 2015 13:15 | June 22, 2015 20:30 | 7h 15m | 36 | 182 |
| 9 | June 14, 2015 11:45 | June 14, 2015 13:15 | 1h 30m | 24 | 35 |
| 10 | June 19, 2015 14:15 | June 19, 2015 14:30 | 15m | 24 | 6 |
Outage episodes by size in 2015: 5 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 2015, 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 2015; 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, 2015, 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/2015/iowa/grundy-county