County annual report · FIPS 19055
2025 Delaware County, IA Power Outage Report
In 2025, customers in Delaware County, IA went without power for an average of 2.0 hours, a total of 14K customer-hours (Iowa average 2.9 hours). That ranks 75th worst of 99 Iowa counties and 2423rd of 3,000 nationally.
Compared with IA, the US and 2024
Coverage line is EAGLE-I's share of Iowa customers tracked each year.
Biggest outages in Delaware County, 2025
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 11, 2025 20:30 | February 11, 2025 20:45 | 15m | 1,533 | 383 |
| 2 | September 26, 2025 17:45 | September 26, 2025 18:45 | 1h | 1,302 | 977 |
| 3 | July 29, 2025 07:00 | July 29, 2025 18:00 | 11h | 982 | 2,181 |
| 4 | March 21, 2025 15:30 | March 21, 2025 16:45 | 1h 15m | 851 | 379 |
| 5 | October 21, 2025 23:30 | October 22, 2025 04:30 | 5h | 542 | 2,483 |
| 6 | June 24, 2025 00:30 | June 24, 2025 05:00 | 4h 30m | 513 | 1,014 |
| 7 | October 8, 2025 20:30 | October 8, 2025 22:00 | 1h 30m | 286 | 215 |
| 8 | June 19, 2025 04:30 | June 19, 2025 07:00 | 2h 30m | 209 | 471 |
| 9 | July 11, 2025 21:30 | July 12, 2025 07:30 | 10h | 207 | 636 |
| 10 | July 24, 2025 14:30 | July 24, 2025 16:45 | 2h 15m | 187 | 421 |
Outage episodes by size in 2025: 13 reached 100+ customers, 2 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 Delaware County reported on EIA Form 861 for 2025, 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 |
|---|---|---|---|---|---|
| East-Central Iowa Rural Elec Coop | 2024 | 38 min | 0.53 | 38 min | 0.53 |
| Maquoketa Valley Rrl Elec Coop | 2024 | 2.2 hrs | 1.20 | 71 min | 0.82 |
| Allamakee-Clayton El Coop, Inc | 2018 | 1.5 hrs | 0.73 | 1.5 hrs | 0.73 |
| Interstate Power and Light Co | - | - | - | - | - |
| Alliant Energy (Interstate Power & Light) | - | - | - | - | - |
| City of Earlville - (IA) | - | - | - | - | - |
| City of Hopkinton - (IA) | - | - | - | - | - |
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 2025; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 7,035 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. Delaware County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Delaware County, IA annual power outage report, 2025, 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/2025/iowa/delaware-county