County annual report · FIPS 17037
2015 DeKalb County, IL Power Outage Report
In 2015, customers in DeKalb County, IL went without power for an average of 1.0 hours, a total of 81K customer-hours (Illinois average 2.3 hours). That ranks 76th worst of 100 Illinois counties and 1758th of 2,484 nationally.
Compared with IL, the US
Coverage line is EAGLE-I's share of Illinois customers tracked each year.
Biggest outages in DeKalb County, 2015
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 9, 2015 21:30 | April 12, 2015 01:00 | 2d 3h | 4,810 | 17K |
| 2 | July 13, 2015 12:00 | July 14, 2015 20:00 | 1d 8h | 1,793 | 13K |
| 3 | December 28, 2015 15:00 | December 30, 2015 10:00 | 1d 19h | 1,648 | 18K |
| 4 | April 25, 2015 21:30 | April 26, 2015 00:45 | 3h 15m | 1,430 | 1,340 |
| 5 | September 17, 2015 12:30 | September 17, 2015 16:30 | 4h | 1,320 | 702 |
| 6 | March 13, 2015 02:00 | March 13, 2015 02:30 | 30m | 1,089 | 273 |
| 7 | December 27, 2015 07:30 | December 27, 2015 09:00 | 1h 30m | 984 | 540 |
| 8 | November 20, 2015 21:30 | November 21, 2015 05:00 | 7h 30m | 942 | 541 |
| 9 | December 24, 2015 03:30 | December 24, 2015 20:00 | 16h 30m | 820 | 1,489 |
| 10 | July 17, 2015 13:00 | July 17, 2015 23:00 | 10h | 781 | 1,192 |
Outage episodes by size in 2015: 55 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 DeKalb County reported on EIA Form 861 for 2015, 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 | 2015 | 1.8 hrs | 0.97 | 72 min | 0.86 |
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 2015; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 79,682 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. DeKalb County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), DeKalb County, IL annual power outage report, 2015, 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/2015/illinois/dekalb-county