County annual report · FIPS 17201
2023 Winnebago County, IL Power Outage Report
In 2023, customers in Winnebago County, IL went without power for an average of 8.3 hours, a total of 1.0M customer-hours (Illinois average 4.0 hours). That ranks 35th worst of 102 Illinois counties and 987th of 2,977 nationally.
Compared with IL, the US and 2022
Coverage line is EAGLE-I's share of Illinois customers tracked each year.
Biggest outages in Winnebago County, 2023
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 22, 2023 19:15 | February 26, 2023 05:15 | 3d 10h | 23,635 | 572K |
| 2 | April 1, 2023 00:45 | April 4, 2023 03:30 | 3d 2h | 14,187 | 234K |
| 3 | July 26, 2023 13:15 | July 28, 2023 01:45 | 1d 12h | 8,778 | 52K |
| 4 | July 28, 2023 07:15 | July 31, 2023 04:30 | 2d 21h | 4,485 | 37K |
| 5 | June 25, 2023 04:30 | June 27, 2023 01:00 | 1d 20h | 4,389 | 35K |
| 6 | August 11, 2023 13:00 | August 11, 2023 22:45 | 9h 45m | 2,223 | 2,232 |
| 7 | August 13, 2023 12:30 | August 13, 2023 17:00 | 4h 30m | 2,147 | 3,163 |
| 8 | February 28, 2023 14:45 | February 28, 2023 22:15 | 7h 30m | 1,805 | 537 |
| 9 | June 28, 2023 10:15 | June 28, 2023 22:45 | 12h 30m | 1,314 | 537 |
| 10 | October 25, 2023 03:45 | October 25, 2023 14:00 | 10h 15m | 1,128 | 617 |
Outage episodes by size in 2023: 112 reached 100+ customers, 12 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 2023, 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 | 2023 | 1.6 hrs | 0.61 | 35 min | 0.48 |
| Rock Energy Cooperative | 2023 | 40 min | 0.38 | 22 min | 0.22 |
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 2023; 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, 2023, 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/2023/illinois/winnebago-county