County annual report · FIPS 17177
2016 Stephenson County, IL Power Outage Report
In 2016, customers in Stephenson County, IL went without power for an average of 2.2 hours, a total of 26K customer-hours (Illinois average 1.5 hours). That ranks 46th worst of 100 Illinois counties and 1284th of 2,391 nationally.
Compared with IL, the US and 2015
Coverage line is EAGLE-I's share of Illinois customers tracked each year.
Biggest outages in Stephenson County, 2016
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | April 4, 2016 17:00 | April 4, 2016 23:00 | 6h | 4,628 | 6,711 |
| 2 | April 4, 2016 13:00 | April 4, 2016 14:30 | 1h 30m | 2,534 | 2,917 |
| 3 | June 15, 2016 04:00 | June 16, 2016 01:30 | 21h 30m | 1,440 | 5,119 |
| 4 | January 17, 2016 14:00 | January 17, 2016 15:00 | 1h | 560 | 560 |
| 5 | May 26, 2016 02:00 | May 26, 2016 05:30 | 3h 30m | 526 | 1,376 |
| 6 | May 4, 2016 04:30 | May 4, 2016 07:00 | 2h 30m | 492 | 545 |
| 7 | April 28, 2016 13:30 | April 28, 2016 14:30 | 1h | 441 | 238 |
| 8 | March 16, 2016 13:00 | March 17, 2016 14:00 | 1d 1h | 375 | 1,568 |
| 9 | March 4, 2016 21:00 | March 4, 2016 21:30 | 30m | 303 | 152 |
| 10 | February 17, 2016 00:00 | February 17, 2016 07:00 | 7h | 231 | 1,151 |
Outage episodes by size in 2016: 17 reached 100+ customers, 3 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 2016, 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 | 2016 | 1.6 hrs | 0.86 | 63 min | 0.72 |
| 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 n/a of Illinois's customers in 2016; 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, 2016, 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/2016/illinois/stephenson-county