County annual report · FIPS 17179
2020 Tazewell County, IL Power Outage Report
In 2020, customers in Tazewell County, IL went without power for an average of 2.5 hours, a total of 200K customer-hours (Illinois average 5.9 hours). That ranks 69th worst of 102 Illinois counties and 2056th 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 Tazewell 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 08:15 | August 13, 2020 03:45 | 2d 19h | 3,552 | 37K |
| 2 | July 15, 2020 18:00 | July 16, 2020 19:45 | 1d 1h | 2,219 | 9,025 |
| 3 | May 25, 2020 22:45 | May 26, 2020 16:15 | 17h 30m | 1,946 | 5,196 |
| 4 | April 8, 2020 21:15 | April 9, 2020 05:30 | 8h 15m | 1,920 | 2,767 |
| 5 | December 14, 2020 17:00 | December 14, 2020 20:45 | 3h 45m | 1,894 | 477 |
| 6 | April 21, 2020 17:00 | April 21, 2020 23:30 | 6h 30m | 1,830 | 3,414 |
| 7 | July 31, 2020 10:00 | July 31, 2020 16:15 | 6h 15m | 1,821 | 1,384 |
| 8 | June 9, 2020 14:00 | June 10, 2020 08:15 | 18h 15m | 1,805 | 6,126 |
| 9 | May 5, 2020 05:45 | May 5, 2020 13:30 | 7h 45m | 1,592 | 5,099 |
| 10 | August 30, 2020 16:45 | August 31, 2020 01:15 | 8h 30m | 1,580 | 3,210 |
Outage episodes by size in 2020: 87 reached 100+ customers, 19 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 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 |
|---|---|---|---|---|---|
| Ameren Illinois Company | 2020 | 3.7 hrs | 1.04 | 1.7 hrs | 0.82 |
| Corn Belt Energy Corporation | 2020 | 5.2 hrs | 4.46 | 2.8 hrs | 3.97 |
| Menard Electric Coop | 2020 | 2.5 hrs | 1.72 | 2.1 hrs | 1.61 |
| 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 94% of Illinois's customers in 2020; 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, 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/tazewell-county