County annual report · FIPS 17177
2019 Stephenson County, IL Power Outage Report
In 2019, customers in Stephenson County, IL went without power for an average of 5.3 hours, a total of 65K customer-hours (Illinois average 1.8 hours). That ranks 18th worst of 102 Illinois counties and 1021st of 2,945 nationally.
Compared with IL, the US and 2018
Coverage line is EAGLE-I's share of Illinois customers tracked each year.
Biggest outages in Stephenson County, 2019
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 26, 2019 11:30 | March 26, 2019 19:00 | 7h 30m | 4,937 | 14K |
| 2 | February 12, 2019 17:00 | February 14, 2019 03:00 | 1d 10h | 1,885 | 3,157 |
| 3 | August 6, 2019 02:00 | August 6, 2019 21:00 | 19h | 1,327 | 4,614 |
| 4 | August 18, 2019 12:00 | August 18, 2019 18:45 | 6h 45m | 1,277 | 936 |
| 5 | February 7, 2019 13:00 | February 9, 2019 00:30 | 1d 11h | 1,239 | 5,136 |
| 6 | September 13, 2019 03:00 | September 13, 2019 23:30 | 20h 30m | 1,066 | 1,846 |
| 7 | June 27, 2019 21:30 | June 28, 2019 19:30 | 22h | 962 | 4,040 |
| 8 | July 28, 2019 06:30 | July 28, 2019 11:00 | 4h 30m | 876 | 1,324 |
| 9 | September 3, 2019 11:30 | September 4, 2019 03:00 | 15h 30m | 801 | 1,187 |
| 10 | May 27, 2019 16:30 | May 27, 2019 17:00 | 30m | 788 | 394 |
Outage episodes by size in 2019: 40 reached 100+ customers, 6 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 2019, 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 | 2018 | 2.0 hrs | 0.82 | 58 min | 0.70 |
| Scenic Rivers Energy Coop | - | - | - | - | - |
| 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 99% of Illinois's customers in 2019; 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, 2019, 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/2019/illinois/stephenson-county