County annual report · FIPS 17043
2015 DuPage County, IL Power Outage Report
In 2015, customers in DuPage County, IL went without power for an average of 2.1 hours, a total of 658K customer-hours (Illinois average 2.3 hours). That ranks 46th worst of 100 Illinois counties and 1195th 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 DuPage 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 | March 9, 2015 19:30 | March 11, 2015 08:30 | 1d 13h | 26,874 | 37K |
| 2 | March 12, 2015 22:00 | March 13, 2015 04:30 | 6h 30m | 10,348 | 2,595 |
| 3 | November 21, 2015 12:00 | November 23, 2015 08:30 | 1d 20h | 4,339 | 22K |
| 4 | October 26, 2015 12:30 | October 27, 2015 05:30 | 17h | 3,537 | 4,075 |
| 5 | August 10, 2015 13:30 | August 12, 2015 09:30 | 1d 20h | 3,434 | 13K |
| 6 | August 14, 2015 11:30 | August 17, 2015 20:00 | 3d 8h | 3,360 | 23K |
| 7 | November 17, 2015 11:00 | November 18, 2015 15:00 | 1d 4h | 3,355 | 13K |
| 8 | August 17, 2015 21:00 | August 20, 2015 05:00 | 2d 8h | 3,230 | 23K |
| 9 | May 30, 2015 13:45 | May 31, 2015 17:45 | 1d 4h | 3,067 | 22K |
| 10 | August 2, 2015 18:30 | August 4, 2015 09:30 | 1d 15h | 2,905 | 20K |
Outage episodes by size in 2015: 247 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 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 |
| City of Naperville - (IL) | 2015 | 21 min | 0.42 | - | - |
| 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 n/a of Illinois's customers in 2015; 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, 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/dupage-county