County annual report · FIPS 19183
2018 Washington County, IA Power Outage Report
In 2018, customers in Washington County, IA went without power for an average of 6.8 hours, a total of 66K customer-hours (Iowa average 2.2 hours). That ranks 9th worst of 99 Iowa counties and 807th 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 Washington 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 | March 24, 2018 10:30 | March 25, 2018 01:00 | 14h 30m | 3,410 | 26K |
| 2 | September 18, 2018 16:30 | September 20, 2018 18:45 | 2d 2h | 2,661 | 14K |
| 3 | June 20, 2018 20:45 | June 21, 2018 02:45 | 6h | 1,072 | 911 |
| 4 | April 27, 2018 03:30 | April 27, 2018 10:00 | 6h 30m | 1,071 | 6,962 |
| 5 | August 28, 2018 23:15 | August 29, 2018 21:45 | 22h 30m | 958 | 4,180 |
| 6 | September 16, 2018 23:45 | September 17, 2018 03:00 | 3h 15m | 954 | 2,246 |
| 7 | May 11, 2018 03:30 | May 11, 2018 05:30 | 2h | 778 | 1,556 |
| 8 | June 18, 2018 21:45 | June 18, 2018 23:45 | 2h | 528 | 176 |
| 9 | October 20, 2018 17:45 | October 20, 2018 21:00 | 3h 15m | 352 | 576 |
| 10 | January 19, 2018 16:15 | January 19, 2018 19:30 | 3h 15m | 294 | 728 |
Outage episodes by size in 2018: 23 reached 100+ customers, 4 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 Washington 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 |
|---|---|---|---|---|---|
| MidAmerican Energy Co | 2018 | 1.9 hrs | 1.18 | 75 min | 0.96 |
| Eastern Iowa Light & Power Coop | 2018 | 1.9 hrs | 0.92 | 1.7 hrs | 0.85 |
| T I P Rural Electric Coop | 2018 | 2.5 hrs | 1.33 | 2.5 hrs | 1.33 |
| Farmers Electric Coop - (IA) | 2018 | 77 min | 2.30 | 77 min | 2.30 |
| Interstate Power and Light Co | - | - | - | - | - |
| Alliant Energy (Interstate Power & Light) | - | - | - | - | - |
| Access Energy Coop | - | - | - | - | - |
| Waverly Municipal Elec Utility | - | - | - | - | - |
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 ÷ 9,700 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. Washington County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Washington 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/washington-county