County annual report · FIPS 17141
2021 Ogle County, IL Power Outage Report
In 2021, customers in Ogle County, IL went without power for an average of 2.1 hours, a total of 87K customer-hours (Illinois average 2.3 hours). That ranks 63rd worst of 102 Illinois counties and 2193rd of 2,974 nationally.
Compared with IL, the US and 2020
Coverage line is EAGLE-I's share of Illinois customers tracked each year.
Biggest outages in Ogle County, 2021
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 24, 2021 20:45 | August 26, 2021 03:45 | 1d 7h | 4,791 | 42K |
| 2 | December 15, 2021 23:30 | December 17, 2021 10:45 | 1d 11h | 2,868 | 8,691 |
| 3 | August 10, 2021 23:15 | August 13, 2021 15:30 | 2d 16h | 2,248 | 10K |
| 4 | April 7, 2021 15:00 | April 7, 2021 16:15 | 1h 15m | 1,901 | 842 |
| 5 | January 1, 2021 23:00 | January 2, 2021 03:30 | 4h 30m | 742 | 780 |
| 6 | March 18, 2021 11:45 | March 18, 2021 23:30 | 11h 45m | 514 | 541 |
| 7 | January 4, 2021 15:30 | January 5, 2021 04:45 | 13h 15m | 485 | 1,070 |
| 8 | January 6, 2021 04:30 | January 7, 2021 22:00 | 1d 17h | 469 | 2,637 |
| 9 | January 5, 2021 05:30 | January 5, 2021 17:15 | 11h 45m | 417 | 408 |
| 10 | October 24, 2021 21:00 | October 26, 2021 02:00 | 1d 5h | 379 | 2,404 |
Outage episodes by size in 2021: 39 reached 100+ customers, 4 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 Ogle County reported on EIA Form 861 for 2021, 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 | 2021 | 1.7 hrs | 0.77 | 43 min | 0.59 |
| Rochelle Municipal Utilities | 2021 | 2.3 hrs | 0.92 | - | - |
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 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 42,029 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. Ogle County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Ogle County, IL annual power outage report, 2021, 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/2021/illinois/ogle-county