County annual report · FIPS 17085
2025 Jo Daviess County, IL Power Outage Report
In 2025, customers in Jo Daviess County, IL went without power for an average of 9.2 hours, a total of 33K customer-hours (Illinois average 2.5 hours). That ranks 18th worst of 102 Illinois counties and 861st of 3,000 nationally.
Compared with IL, the US and 2024
Coverage line is EAGLE-I's share of Illinois customers tracked each year.
Biggest outages in Jo Daviess County, 2025
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 11, 2025 22:15 | July 13, 2025 12:00 | 1d 13h | 1,814 | 18K |
| 2 | May 12, 2025 13:15 | May 12, 2025 14:45 | 1h 30m | 1,704 | 2,158 |
| 3 | May 17, 2025 01:30 | May 17, 2025 04:00 | 2h 30m | 443 | 726 |
| 4 | July 30, 2025 09:30 | July 30, 2025 20:45 | 11h 15m | 438 | 814 |
| 5 | July 20, 2025 13:00 | July 20, 2025 15:30 | 2h 30m | 427 | 1,068 |
| 6 | February 17, 2025 11:00 | February 17, 2025 14:15 | 3h 15m | 385 | 1,072 |
| 7 | July 11, 2025 00:30 | July 11, 2025 12:00 | 11h 30m | 291 | 596 |
| 8 | December 22, 2025 14:45 | December 22, 2025 15:45 | 1h | 275 | 95 |
| 9 | July 5, 2025 22:30 | July 6, 2025 07:30 | 9h | 242 | 262 |
| 10 | July 28, 2025 09:00 | July 28, 2025 15:45 | 6h 45m | 238 | 636 |
Outage episodes by size in 2025: 17 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 2025, 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 | 2024 | 2.2 hrs | 0.68 | 36 min | 0.49 |
| Jo-Carroll Energy, Inc | 2024 | 67 min | 0.53 | 49 min | 0.42 |
| 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 2025; 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, 2025, 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/2025/illinois/jo-daviess-county