County annual report · FIPS 17043
2023 DuPage County, IL Power Outage Report
In 2023, customers in DuPage County, IL went without power for an average of 1.2 hours, a total of 376K customer-hours (Illinois average 4.0 hours). That ranks 93rd worst of 102 Illinois counties and 2596th of 2,977 nationally.
Compared with IL, the US and 2022
Coverage line is EAGLE-I's share of Illinois customers tracked each year.
Biggest outages in DuPage County, 2023
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | July 14, 2023 03:30 | July 17, 2023 00:45 | 2d 21h | 14,334 | 108K |
| 2 | July 28, 2023 09:15 | July 31, 2023 02:30 | 2d 17h | 6,345 | 39K |
| 3 | March 31, 2023 22:15 | April 3, 2023 02:30 | 2d 4h | 3,980 | 19K |
| 4 | July 4, 2023 19:00 | July 5, 2023 09:30 | 14h 30m | 2,201 | 3,778 |
| 5 | February 22, 2023 21:15 | February 25, 2023 03:00 | 2d 5h | 2,067 | 13K |
| 6 | June 14, 2023 14:30 | June 15, 2023 10:45 | 20h 15m | 1,861 | 2,783 |
| 7 | January 23, 2023 13:30 | January 23, 2023 17:45 | 4h 15m | 1,654 | 681 |
| 8 | June 15, 2023 15:15 | June 16, 2023 01:45 | 10h 30m | 1,627 | 694 |
| 9 | September 5, 2023 12:45 | September 5, 2023 13:00 | 15m | 1,555 | 389 |
| 10 | February 15, 2023 02:30 | February 16, 2023 03:30 | 1d 1h | 1,358 | 2,653 |
Outage episodes by size in 2023: 244 reached 100+ customers, 20 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 DuPage County reported on EIA Form 861 for 2023, 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 | 2023 | 1.6 hrs | 0.61 | 35 min | 0.48 |
| City of Naperville - (IL) | 2023 | 25 min | 0.58 | - | - |
| 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 2023; 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, 2023, 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/2023/illinois/dupage-county