County annual report · FIPS 17111
2022 McHenry County, IL Power Outage Report
In 2022, customers in McHenry County, IL went without power for an average of 1.7 hours, a total of 199K customer-hours (Illinois average 1.6 hours). That ranks 70th worst of 102 Illinois counties and 2434th of 2,976 nationally.
Compared with IL, the US and 2021
Coverage line is EAGLE-I's share of Illinois customers tracked each year.
Biggest outages in McHenry County, 2022
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 4, 2022 20:00 | July 7, 2022 23:00 | 3d 3h | 6,074 | 64K |
| 2 | March 6, 2022 00:45 | March 7, 2022 00:45 | 1d | 2,619 | 17K |
| 3 | June 15, 2022 22:15 | June 16, 2022 19:00 | 20h 45m | 2,101 | 6,969 |
| 4 | November 28, 2022 14:15 | November 28, 2022 21:30 | 7h 15m | 2,066 | 3,325 |
| 5 | November 5, 2022 12:45 | November 7, 2022 03:30 | 1d 14h | 2,056 | 9,949 |
| 6 | August 7, 2022 14:30 | August 8, 2022 02:30 | 12h | 1,980 | 1,202 |
| 7 | April 20, 2022 16:00 | April 20, 2022 22:00 | 6h | 1,601 | 1,537 |
| 8 | June 20, 2022 12:45 | June 20, 2022 23:00 | 10h 15m | 1,599 | 674 |
| 9 | April 18, 2022 08:00 | April 18, 2022 12:30 | 4h 30m | 1,594 | 1,726 |
| 10 | July 15, 2022 16:30 | July 16, 2022 02:00 | 9h 30m | 1,539 | 2,747 |
Outage episodes by size in 2022: 113 reached 100+ customers, 17 reached 1,000+ customers, 0 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 McHenry County reported on EIA Form 861 for 2022, 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 | 2022 | 66 min | 0.63 | 38 min | 0.52 |
| Rock Energy Cooperative | 2022 | 13 min | 0.48 | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 98% of Illinois's customers in 2022; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 120,381 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. McHenry County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), McHenry County, IL annual power outage report, 2022, 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/2022/illinois/mchenry-county