County annual report · FIPS 17179
2023 Tazewell County, IL Power Outage Report
In 2023, customers in Tazewell County, IL went without power for an average of 2.9 hours, a total of 237K customer-hours (Illinois average 4.0 hours). That ranks 66th worst of 102 Illinois counties and 1980th 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 Tazewell 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 | May 7, 2023 20:15 | May 10, 2023 09:15 | 2d 13h | 8,119 | 59K |
| 2 | February 9, 2023 15:00 | February 9, 2023 19:45 | 4h 45m | 4,700 | 4,133 |
| 3 | June 29, 2023 07:45 | July 3, 2023 01:15 | 3d 17h | 3,719 | 40K |
| 4 | April 5, 2023 01:15 | April 5, 2023 04:15 | 3h | 3,351 | 2,974 |
| 5 | December 13, 2023 02:30 | December 13, 2023 03:45 | 1h 15m | 3,116 | 2,217 |
| 6 | August 10, 2023 11:45 | August 10, 2023 17:45 | 6h | 1,460 | 451 |
| 7 | August 29, 2023 14:00 | August 29, 2023 20:45 | 6h 45m | 1,409 | 1,808 |
| 8 | December 26, 2023 14:30 | December 26, 2023 17:45 | 3h 15m | 1,335 | 1,099 |
| 9 | May 30, 2023 22:00 | June 2, 2023 22:00 | 3d | 1,302 | 7,907 |
| 10 | April 18, 2023 05:15 | April 18, 2023 06:30 | 1h 15m | 1,151 | 1,439 |
Outage episodes by size in 2023: 95 reached 100+ customers, 13 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 Tazewell 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 |
| Corn Belt Energy Corporation | 2023 | 6.5 hrs | 4.54 | 2.6 hrs | 3.88 |
| Menard Electric Coop | 2023 | 7.4 hrs | 2.47 | 1.6 hrs | 1.46 |
| Ameren | - | - | - | - | - |
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 ÷ 80,878 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. Tazewell County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Tazewell 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/tazewell-county