County annual report · FIPS 17177
2022 Stephenson County, IL Power Outage Report
In 2022, customers in Stephenson County, IL went without power for an average of 1.7 hours, a total of 21K customer-hours (Illinois average 1.6 hours). That ranks 67th worst of 102 Illinois counties and 2402nd of 2,976 nationally.
Compared with IL, the US and 2021
Coverage line is EAGLE-I's share of Illinois customers tracked each year.
Biggest outages in Stephenson County, 2022
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | May 25, 2022 07:30 | May 25, 2022 13:45 | 6h 15m | 997 | 1,310 |
| 2 | July 5, 2022 04:45 | July 5, 2022 13:45 | 9h | 652 | 1,331 |
| 3 | August 7, 2022 08:30 | August 7, 2022 17:45 | 9h 15m | 358 | 796 |
| 4 | August 3, 2022 13:15 | August 3, 2022 20:00 | 6h 45m | 292 | 768 |
| 5 | August 20, 2022 01:15 | August 20, 2022 11:00 | 9h 45m | 256 | 1,428 |
| 6 | May 11, 2022 01:15 | May 11, 2022 04:45 | 3h 30m | 200 | 243 |
| 7 | March 22, 2022 13:00 | March 22, 2022 16:30 | 3h 30m | 184 | 321 |
| 8 | July 23, 2022 09:45 | July 23, 2022 17:15 | 7h 30m | 182 | 271 |
| 9 | March 11, 2022 22:00 | March 12, 2022 00:00 | 2h | 175 | 180 |
| 10 | May 1, 2022 00:30 | May 1, 2022 01:30 | 1h | 161 | 161 |
Outage episodes by size in 2022: 18 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 Stephenson County reported on EIA Form 861 for 2022, 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 | 2022 | 66 min | 0.63 | 38 min | 0.52 |
| Rock Energy Cooperative | 2022 | 13 min | 0.48 | - | - |
| Scenic Rivers Energy Coop | - | - | - | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 98% of Illinois's customers in 2022; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 12,248 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. Stephenson County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Stephenson County, IL annual power outage report, 2022, 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/2022/illinois/stephenson-county