County annual report · FIPS 19055
2018 Delaware County, IA Power Outage Report
In 2018, customers in Delaware County, IA went without power for an average of 1.4 hours, a total of 10K customer-hours (Iowa average 2.2 hours). That ranks 72nd worst of 99 Iowa counties and 2121st of 2,798 nationally.
Compared with IA, the US and 2017
Coverage line is EAGLE-I's share of Iowa customers tracked each year.
Biggest outages in Delaware County, 2018
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 18, 2018 15:45 | February 18, 2018 20:00 | 4h 15m | 840 | 3,457 |
| 2 | June 10, 2018 03:45 | June 10, 2018 12:45 | 9h | 583 | 2,466 |
| 3 | March 5, 2018 15:45 | March 6, 2018 01:00 | 9h 15m | 373 | 1,030 |
| 4 | March 6, 2018 03:15 | March 6, 2018 05:00 | 1h 45m | 285 | 427 |
| 5 | January 29, 2018 14:15 | January 29, 2018 14:45 | 30m | 211 | 106 |
| 6 | April 12, 2018 03:15 | April 12, 2018 05:00 | 1h 45m | 149 | 261 |
| 7 | April 14, 2018 11:30 | April 14, 2018 13:30 | 2h | 149 | 203 |
| 8 | May 16, 2018 05:45 | May 16, 2018 07:00 | 1h 15m | 146 | 148 |
| 9 | May 3, 2018 23:45 | May 4, 2018 00:45 | 1h | 85 | 71 |
| 10 | June 29, 2018 23:45 | June 30, 2018 03:30 | 3h 45m | 78 | 239 |
Outage episodes by size in 2018: 8 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 Delaware County reported on EIA Form 861 for 2018, 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 |
|---|---|---|---|---|---|
| Maquoketa Valley Rrl Elec Coop | 2018 | 52 min | 0.96 | 50 min | 0.93 |
| 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) | - | - | - | - | - |
| East-Central Iowa Rural Elec Coop | - | - | - | - | - |
| 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 89% of Iowa's customers in 2018; 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, 2018, 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/2018/iowa/delaware-county