County annual report · FIPS 17037
2018 DeKalb County, IL Power Outage Report
In 2018, customers in DeKalb County, IL went without power for an average of 1.5 hours, a total of 122K customer-hours (Illinois average 2.5 hours). That ranks 73rd worst of 102 Illinois counties and 2082nd 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 DeKalb 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 | April 16, 2018 22:00 | April 17, 2018 08:30 | 10h 30m | 3,162 | 15K |
| 2 | October 20, 2018 16:30 | October 21, 2018 07:30 | 15h | 2,572 | 5,663 |
| 3 | November 25, 2018 17:00 | November 29, 2018 02:00 | 3d 9h | 2,100 | 38K |
| 4 | January 11, 2018 20:00 | January 12, 2018 02:00 | 6h | 1,566 | 7,239 |
| 5 | June 26, 2018 19:30 | June 27, 2018 07:00 | 11h 30m | 1,445 | 3,228 |
| 6 | September 25, 2018 22:00 | September 26, 2018 21:00 | 23h | 1,326 | 6,294 |
| 7 | October 3, 2018 14:30 | October 4, 2018 03:30 | 13h | 952 | 960 |
| 8 | August 29, 2018 02:30 | August 30, 2018 01:30 | 23h | 888 | 11K |
| 9 | January 16, 2018 20:30 | January 17, 2018 05:30 | 9h | 854 | 2,398 |
| 10 | July 16, 2018 19:00 | July 16, 2018 22:00 | 3h | 826 | 1,382 |
Outage episodes by size in 2018: 54 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 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 |
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 ÷ 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, 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/dekalb-county