County annual report · FIPS 17085
2023 Jo Daviess County, IL Power Outage Report
In 2023, customers in Jo Daviess County, IL went without power for an average of 26.0 hours, a total of 94K customer-hours (Illinois average 4.0 hours). That ranks 9th worst of 102 Illinois counties and 290th of 2,977 nationally.
Compared with IL, the US and 2022
Coverage line is EAGLE-I's share of Illinois customers tracked each year.
Biggest outages in Jo Daviess County, 2023
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | February 22, 2023 21:00 | February 26, 2023 06:45 | 3d 9h | 3,239 | 59K |
| 2 | July 29, 2023 01:45 | July 30, 2023 20:30 | 1d 18h | 1,861 | 17K |
| 3 | July 27, 2023 13:30 | July 27, 2023 17:15 | 3h 45m | 1,788 | 1,976 |
| 4 | July 28, 2023 04:15 | July 28, 2023 06:15 | 2h | 1,063 | 2,126 |
| 5 | May 19, 2023 14:15 | May 19, 2023 17:30 | 3h 15m | 527 | 664 |
| 6 | October 15, 2023 12:30 | October 15, 2023 16:15 | 3h 45m | 474 | 1,778 |
| 7 | December 3, 2023 12:00 | December 3, 2023 16:15 | 4h 15m | 317 | 661 |
| 8 | March 25, 2023 10:00 | March 26, 2023 01:15 | 15h 15m | 271 | 1,559 |
| 9 | November 25, 2023 00:30 | November 25, 2023 01:15 | 45m | 238 | 179 |
| 10 | July 28, 2023 07:15 | July 28, 2023 18:00 | 10h 45m | 214 | 705 |
Outage episodes by size in 2023: 19 reached 100+ customers, 4 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 2023, 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 | 2023 | 1.6 hrs | 0.61 | 35 min | 0.48 |
| Jo-Carroll Energy, Inc | 2023 | 2.9 hrs | 0.71 | 31 min | 0.27 |
| 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 n/a of Illinois's customers in 2023; 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, 2023, 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/2023/illinois/jo-daviess-county