County annual report · FIPS 17043
2020 DuPage County, IL Power Outage Report
In 2020, customers in DuPage County, IL went without power for an average of 6.7 hours, a total of 2.1M customer-hours (Illinois average 5.9 hours). That ranks 26th worst of 102 Illinois counties and 1126th 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 DuPage 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 10:15 | August 17, 2020 06:45 | 6d 20h | 64,595 | 1.8M |
| 2 | June 29, 2020 21:00 | July 1, 2020 00:15 | 1d 3h | 8,311 | 8,884 |
| 3 | August 23, 2020 19:45 | August 25, 2020 14:00 | 1d 18h | 3,922 | 8,261 |
| 4 | June 26, 2020 21:30 | June 28, 2020 05:45 | 1d 8h | 2,304 | 14K |
| 5 | June 9, 2020 14:45 | June 11, 2020 03:45 | 1d 13h | 2,238 | 12K |
| 6 | November 10, 2020 12:15 | November 12, 2020 02:45 | 1d 14h | 1,950 | 6,410 |
| 7 | May 17, 2020 08:00 | May 19, 2020 01:30 | 1d 17h | 1,948 | 4,587 |
| 8 | October 26, 2020 12:45 | October 26, 2020 22:45 | 10h | 1,935 | 1,810 |
| 9 | April 8, 2020 18:30 | April 9, 2020 09:15 | 14h 45m | 1,576 | 860 |
| 10 | July 5, 2020 22:15 | July 6, 2020 01:30 | 3h 15m | 1,505 | 1,014 |
Outage episodes by size in 2020: 227 reached 100+ customers, 29 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 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 |
| City of Naperville - (IL) | 2020 | 14 min | 0.22 | - | - |
| 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 94% of Illinois's customers in 2020; 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, 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/dupage-county