County annual report · FIPS 17043
2018 DuPage County, IL Power Outage Report
In 2018, customers in DuPage County, IL went without power for an average of 4.2 hours, a total of 1.3M customer-hours (Illinois average 2.5 hours). That ranks 28th worst of 102 Illinois counties and 1198th 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 DuPage 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 | November 25, 2018 18:30 | December 1, 2018 06:30 | 5d 12h | 27,278 | 764K |
| 2 | August 27, 2018 10:30 | August 30, 2018 08:00 | 2d 21h | 13,204 | 89K |
| 3 | October 20, 2018 16:00 | October 22, 2018 01:00 | 1d 9h | 5,569 | 22K |
| 4 | July 5, 2018 11:00 | July 7, 2018 03:30 | 1d 16h | 4,452 | 13K |
| 5 | July 1, 2018 12:00 | July 3, 2018 05:00 | 1d 17h | 4,255 | 17K |
| 6 | September 25, 2018 11:00 | September 28, 2018 12:30 | 3d 1h | 3,847 | 19K |
| 7 | June 25, 2018 14:00 | June 27, 2018 07:00 | 1d 17h | 3,222 | 9,733 |
| 8 | April 15, 2018 11:00 | April 15, 2018 16:00 | 5h | 3,217 | 1,826 |
| 9 | June 15, 2018 14:00 | June 17, 2018 08:00 | 1d 18h | 3,191 | 8,415 |
| 10 | April 19, 2018 09:00 | April 20, 2018 03:00 | 18h | 2,439 | 3,486 |
Outage episodes by size in 2018: 238 reached 100+ customers, 48 reached 1,000+ customers, 2 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 DuPage 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 |
| City of Naperville - (IL) | 2018 | 19 min | 0.47 | - | - |
| City of St Charles - (IL) | - | - | - | - | - |
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 ÷ 313,751 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. DuPage County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), DuPage 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/dupage-county