County annual report · FIPS 17085
2018 Jo Daviess County, IL Power Outage Report
In 2018, customers in Jo Daviess County, IL went without power for an average of 9.5 hours, a total of 34K customer-hours (Illinois average 2.5 hours). That ranks 9th worst of 102 Illinois counties and 584th of 2,798 nationally.
Compared with IL, the US and 2017
Coverage line is EAGLE-I's share of Illinois customers tracked each year.
Biggest outages in Jo Daviess County, 2018
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | July 14, 2018 00:30 | July 16, 2018 04:00 | 2d 3h | 1,588 | 27K |
| 2 | April 14, 2018 21:30 | April 15, 2018 09:30 | 12h | 1,037 | 3,540 |
| 3 | March 9, 2018 16:00 | March 9, 2018 16:30 | 30m | 376 | 188 |
| 4 | May 9, 2018 19:30 | May 10, 2018 01:30 | 6h | 227 | 882 |
| 5 | October 26, 2018 15:00 | October 26, 2018 16:30 | 1h 30m | 176 | 257 |
| 6 | November 24, 2018 04:00 | November 24, 2018 07:30 | 3h 30m | 153 | 156 |
| 7 | December 9, 2018 03:30 | December 9, 2018 12:30 | 9h | 77 | 453 |
| 8 | May 14, 2018 13:00 | May 14, 2018 18:30 | 5h 30m | 71 | 148 |
| 9 | August 8, 2018 14:30 | August 8, 2018 16:30 | 2h | 63 | 118 |
| 10 | May 14, 2018 10:00 | May 14, 2018 11:30 | 1h 30m | 62 | 63 |
Outage episodes by size in 2018: 6 reached 100+ customers, 2 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 Jo Daviess County reported on EIA Form 861 for 2018, 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 |
| Jo-Carroll Energy, Inc | 2018 | 78 min | 0.51 | 59 min | 0.40 |
| 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 92% of Illinois's customers in 2018; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 3,617 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. Jo Daviess County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Jo Daviess County, IL annual power outage report, 2018, 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/2018/illinois/jo-daviess-county