County annual report · FIPS 17037
2020 DeKalb County, IL Power Outage Report
In 2020, customers in DeKalb County, IL went without power for an average of 2.9 hours, a total of 230K customer-hours (Illinois average 5.9 hours). That ranks 59th worst of 102 Illinois counties and 1913th of 3,019 nationally.
Compared with IL, the US and 2019
Coverage line is EAGLE-I's share of Illinois customers tracked each year.
Biggest outages in DeKalb County, 2020
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | August 10, 2020 20:30 | August 15, 2020 03:45 | 4d 7h | 10,587 | 160K |
| 2 | August 25, 2020 16:00 | August 26, 2020 04:15 | 12h 15m | 2,902 | 5,559 |
| 3 | June 26, 2020 23:30 | June 28, 2020 00:45 | 1d 1h | 2,785 | 12K |
| 4 | August 7, 2020 18:30 | August 8, 2020 02:30 | 8h | 1,603 | 1,359 |
| 5 | June 19, 2020 12:30 | June 19, 2020 14:45 | 2h 15m | 1,592 | 403 |
| 6 | December 30, 2020 05:00 | December 31, 2020 00:15 | 19h 15m | 1,508 | 11K |
| 7 | August 25, 2020 02:30 | August 25, 2020 09:15 | 6h 45m | 1,440 | 629 |
| 8 | June 18, 2020 18:30 | June 18, 2020 21:45 | 3h 15m | 1,249 | 1,477 |
| 9 | June 9, 2020 18:30 | June 11, 2020 00:15 | 1d 5h | 1,204 | 4,105 |
| 10 | November 10, 2020 21:30 | November 12, 2020 05:30 | 1d 8h | 896 | 3,832 |
Outage episodes by size in 2020: 48 reached 100+ customers, 9 reached 1,000+ customers, 1 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 2020, 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 | 2020 | 5.7 hrs | 0.83 | 40 min | 0.55 |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 94% of Illinois's customers in 2020; 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, 2020, 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/2020/illinois/dekalb-county