County annual report · FIPS 17201
2020 Winnebago County, IL Power Outage Report
In 2020, customers in Winnebago County, IL went without power for an average of 9.6 hours, a total of 1.2M customer-hours (Illinois average 5.9 hours). That ranks 13th worst of 102 Illinois counties and 822nd of 3,019 nationally.
Compared with IL, the US and 2019
Coverage line is EAGLE-I's share of Illinois customers tracked each year.
Biggest outages in Winnebago 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 | August 10, 2020 19:15 | August 16, 2020 06:30 | 5d 11h | 24,445 | 901K |
| 2 | November 10, 2020 21:45 | November 13, 2020 11:15 | 2d 13h | 11,519 | 151K |
| 3 | January 8, 2020 23:00 | January 9, 2020 01:45 | 2h 45m | 2,720 | 7,405 |
| 4 | April 9, 2020 14:15 | April 9, 2020 22:00 | 7h 45m | 1,626 | 1,189 |
| 5 | January 15, 2020 17:00 | January 15, 2020 22:15 | 5h 15m | 1,480 | 749 |
| 6 | April 15, 2020 17:45 | April 16, 2020 00:45 | 7h | 1,452 | 1,268 |
| 7 | March 21, 2020 04:30 | March 21, 2020 06:00 | 1h 30m | 1,448 | 1,168 |
| 8 | June 9, 2020 20:30 | June 11, 2020 04:45 | 1d 8h | 1,296 | 8,390 |
| 9 | June 26, 2020 22:45 | June 27, 2020 19:30 | 20h 45m | 1,296 | 3,384 |
| 10 | January 25, 2020 06:45 | January 25, 2020 23:00 | 16h 15m | 1,157 | 6,628 |
Outage episodes by size in 2020: 98 reached 100+ customers, 16 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 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 |
|---|---|---|---|---|---|
| Commonwealth Edison Co | 2020 | 5.7 hrs | 0.83 | 40 min | 0.55 |
| Rock Energy Cooperative | 2020 | 1.7 hrs | 0.68 | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 94% of Illinois's customers in 2020; 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, 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/illinois/winnebago-county