County annual report · FIPS 19055
2023 Delaware County, IA Power Outage Report
In 2023, customers in Delaware County, IA went without power for an average of 10.1 hours, a total of 71K customer-hours (Iowa average 2.0 hours). That ranks 3rd worst of 99 Iowa counties and 839th of 2,977 nationally.
Compared with IA, the US and 2022
Coverage line is EAGLE-I's share of Iowa customers tracked each year.
Biggest outages in Delaware County, 2023
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | March 31, 2023 22:45 | April 2, 2023 17:30 | 1d 18h | 7,198 | 37K |
| 2 | February 23, 2023 05:45 | February 24, 2023 13:00 | 1d 7h | 2,107 | 9,110 |
| 3 | July 29, 2023 01:00 | July 30, 2023 20:30 | 1d 19h | 1,680 | 14K |
| 4 | August 9, 2023 17:30 | August 9, 2023 19:15 | 1h 45m | 969 | 1,212 |
| 5 | September 12, 2023 19:15 | September 12, 2023 20:45 | 1h 30m | 453 | 679 |
| 6 | July 23, 2023 06:00 | July 23, 2023 09:15 | 3h 15m | 378 | 569 |
| 7 | February 24, 2023 20:00 | February 24, 2023 23:15 | 3h 15m | 349 | 525 |
| 8 | July 7, 2023 02:15 | July 7, 2023 04:45 | 2h 30m | 287 | 586 |
| 9 | May 27, 2023 12:45 | May 27, 2023 13:15 | 30m | 283 | 72 |
| 10 | August 11, 2023 13:30 | August 14, 2023 12:45 | 2d 23h | 211 | 573 |
Outage episodes by size in 2023: 13 reached 100+ customers, 3 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 2023, 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 | 2023 | 52 min | 0.65 | 52 min | 0.65 |
| Maquoketa Valley Rrl Elec Coop | 2023 | 3.5 hrs | 1.36 | 57 min | 0.66 |
| 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 2023; 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, 2023, 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/2023/iowa/delaware-county