County annual report · FIPS 19061
2020 Dubuque County, IA Power Outage Report
In 2020, customers in Dubuque County, IA went without power for an average of 0.6 hours, a total of 28K customer-hours (Iowa average 27.4 hours). That ranks 94th worst of 99 Iowa counties and 2798th of 3,019 nationally.
Compared with IA, the US and 2019
Coverage line is EAGLE-I's share of Iowa customers tracked each year.
Biggest outages in Dubuque County, 2020
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | November 23, 2020 15:45 | November 23, 2020 22:00 | 6h 15m | 1,702 | 2,407 |
| 2 | September 2, 2020 11:45 | September 2, 2020 17:45 | 6h | 1,265 | 1,553 |
| 3 | January 7, 2020 15:15 | January 7, 2020 16:45 | 1h 30m | 1,229 | 311 |
| 4 | June 10, 2020 13:45 | June 10, 2020 17:30 | 3h 45m | 946 | 557 |
| 5 | March 14, 2020 00:30 | March 14, 2020 06:00 | 5h 30m | 913 | 3,808 |
| 6 | April 18, 2020 00:00 | April 18, 2020 00:30 | 30m | 912 | 456 |
| 7 | August 28, 2020 21:45 | August 29, 2020 00:15 | 2h 30m | 607 | 464 |
| 8 | September 6, 2020 10:30 | September 6, 2020 14:15 | 3h 45m | 564 | 1,415 |
| 9 | November 28, 2020 10:00 | November 28, 2020 16:30 | 6h 30m | 527 | 551 |
| 10 | July 12, 2020 00:15 | July 12, 2020 07:45 | 7h 30m | 515 | 753 |
Outage episodes by size in 2020: 26 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 Dubuque County reported on EIA Form 861 for 2020, 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 | 2020 | 4.5 hrs | 1.12 | 73 min | 0.75 |
| 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) | - | - | - | - | - |
| Cascade Municipal Utilities | - | - | - | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 91% of Iowa's customers in 2020; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 46,546 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. Dubuque County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Dubuque County, IA annual power outage report, 2020, 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/2020/iowa/dubuque-county