County annual report · FIPS 19051
2021 Davis County, IA Power Outage Report
In 2021, customers in Davis County, IA went without power for an average of 2.0 hours, a total of 9,384 customer-hours (Iowa average 2.7 hours). That ranks 61st worst of 99 Iowa counties and 2227th of 2,974 nationally.
Compared with IA, the US and 2020
Coverage line is EAGLE-I's share of Iowa customers tracked each year.
Biggest outages in Davis County, 2021
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | December 16, 2021 01:15 | December 17, 2021 06:00 | 1d 4h | 563 | 3,618 |
| 2 | June 19, 2021 05:45 | June 19, 2021 10:45 | 5h | 360 | 310 |
| 3 | March 9, 2021 16:30 | March 9, 2021 19:15 | 2h 45m | 210 | 474 |
| 4 | December 15, 2021 20:45 | December 15, 2021 22:30 | 1h 45m | 208 | 93 |
| 5 | June 19, 2021 18:00 | June 19, 2021 21:45 | 3h 45m | 203 | 725 |
| 6 | November 6, 2021 05:45 | November 7, 2021 07:30 | 1d 1h | 199 | 287 |
| 7 | June 25, 2021 03:45 | June 25, 2021 09:00 | 5h 15m | 163 | 324 |
| 8 | July 21, 2021 21:30 | July 22, 2021 00:45 | 3h 15m | 112 | 299 |
| 9 | April 8, 2021 04:00 | April 8, 2021 09:15 | 5h 15m | 94 | 392 |
| 10 | November 13, 2021 21:15 | November 13, 2021 22:45 | 1h 30m | 88 | 117 |
Outage episodes by size in 2021: 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 Davis County reported on EIA Form 861 for 2021, 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 |
|---|---|---|---|---|---|
| Chariton Valley Elec Coop, Inc | 2018 | 2.3 hrs | 1.23 | 2.3 hrs | 1.23 |
| Southern Iowa Elec Coop, Inc | 2018 | 1.9 hrs | 1.00 | 1.9 hrs | 1.00 |
| Interstate Power and Light Co | - | - | - | - | - |
| Access Energy Coop | - | - | - | - | - |
| City of Bloomfield - (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 91% of Iowa's customers in 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 4,718 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. Davis County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Davis County, IA annual power outage report, 2021, 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/2021/iowa/davis-county