County annual report · FIPS 17201
2017 Winnebago County, IL Power Outage Report
In 2017, customers in Winnebago County, IL went without power for an average of 5.0 hours, a total of 606K customer-hours (Illinois average 1.4 hours). That ranks 5th worst of 102 Illinois counties and 960th of 2,786 nationally.
Compared with IL, the US and 2016
Coverage line is EAGLE-I's share of Illinois customers tracked each year.
Biggest outages in Winnebago County, 2017
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | June 28, 2017 22:30 | July 1, 2017 06:00 | 2d 7h | 14,324 | 196K |
| 2 | July 19, 2017 20:30 | July 24, 2017 10:30 | 4d 14h | 11,027 | 225K |
| 3 | March 16, 2017 19:00 | March 16, 2017 20:30 | 1h 30m | 5,729 | 4,293 |
| 4 | May 17, 2017 20:00 | May 20, 2017 03:30 | 2d 7h | 4,205 | 54K |
| 5 | March 7, 2017 03:00 | March 10, 2017 03:30 | 3d | 2,568 | 37K |
| 6 | July 12, 2017 04:00 | July 13, 2017 05:30 | 1d 1h | 1,947 | 2,853 |
| 7 | August 16, 2017 22:00 | August 17, 2017 06:00 | 8h | 1,631 | 1,998 |
| 8 | June 2, 2017 21:00 | June 3, 2017 06:30 | 9h 30m | 1,436 | 1,460 |
| 9 | June 10, 2017 16:30 | June 12, 2017 08:00 | 1d 15h | 1,228 | 5,295 |
| 10 | July 5, 2017 18:30 | July 6, 2017 22:30 | 1d 4h | 1,119 | 3,787 |
Outage episodes by size in 2017: 93 reached 100+ customers, 11 reached 1,000+ customers, 2 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 Winnebago County reported on EIA Form 861 for 2017, 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 |
|---|---|---|---|---|---|
| Commonwealth Edison Co | 2017 | 1.6 hrs | 0.82 | 55 min | 0.66 |
| Rock Energy Cooperative | - | - | - | - | - |
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 Illinois's customers in 2017; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 120,789 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. Winnebago County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Winnebago County, IL annual power outage report, 2017, 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/2017/illinois/winnebago-county