County annual report · FIPS 17009
2023 Brown County, IL Power Outage Report
In 2023, customers in Brown County, IL went without power for an average of 17.5 hours, a total of 52K customer-hours (Illinois average 4.0 hours). That ranks 20th worst of 102 Illinois counties and 485th 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 Brown 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 | February 9, 2023 07:00 | February 9, 2023 08:30 | 1h 30m | 1,844 | 2,334 |
| 2 | March 31, 2023 23:45 | April 1, 2023 01:15 | 1h 30m | 1,840 | 1,841 |
| 3 | April 5, 2023 10:00 | April 5, 2023 22:45 | 12h 45m | 1,840 | 3,326 |
| 4 | November 18, 2023 00:15 | November 18, 2023 01:00 | 45m | 1,540 | 1,152 |
| 5 | April 8, 2023 23:45 | April 9, 2023 02:45 | 3h | 1,161 | 2,882 |
| 6 | October 2, 2023 05:00 | October 2, 2023 08:15 | 3h 15m | 537 | 1,221 |
| 7 | March 14, 2023 14:45 | March 15, 2023 12:45 | 22h | 238 | 218 |
| 8 | November 18, 2023 03:45 | November 18, 2023 06:30 | 2h 45m | 125 | 250 |
| 9 | October 13, 2023 16:00 | October 13, 2023 17:00 | 1h | 119 | 35 |
| 10 | June 29, 2023 16:45 | August 14, 2023 16:15 | 45d 23h | 98 | 39K |
Outage episodes by size in 2023: 9 reached 100+ customers, 5 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 Brown 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 |
|---|---|---|---|---|---|
| Ameren Illinois Company | 2023 | 9.9 hrs | 1.33 | 1.9 hrs | 0.82 |
| Adams Electric Coop | 2018 | 2.2 hrs | 1.12 | 2.2 hrs | 1.12 |
| Ameren | - | - | - | - | - |
| Illinois Rural Electric Coop | - | - | - | - | - |
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 ÷ 3,007 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. Brown County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Brown 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/brown-county