County annual report · FIPS 17179
2015 Tazewell County, IL Power Outage Report
In 2015, customers in Tazewell County, IL went without power for an average of 7.1 hours, a total of 573K customer-hours (Illinois average 2.3 hours). That ranks 15th worst of 100 Illinois counties and 379th of 2,484 nationally.
Compared with IL, the US
Coverage line is EAGLE-I's share of Illinois customers tracked each year.
Biggest outages in Tazewell County, 2015
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | December 26, 2015 22:00 | December 31, 2015 00:15 | 4d 2h | 18,680 | 412K |
| 2 | June 7, 2015 02:15 | June 22, 2015 22:00 | 15d 19h | 5,639 | 60K |
| 3 | September 16, 2015 16:30 | September 25, 2015 15:30 | 8d 23h | 2,730 | 7,026 |
| 4 | July 19, 2015 03:00 | July 21, 2015 12:00 | 2d 9h | 2,180 | 7,811 |
| 5 | November 18, 2015 00:30 | November 18, 2015 05:30 | 5h | 2,124 | 2,662 |
| 6 | August 27, 2015 12:00 | August 27, 2015 15:30 | 3h 30m | 2,063 | 519 |
| 7 | November 3, 2015 19:45 | November 3, 2015 23:00 | 3h 15m | 1,964 | 987 |
| 8 | July 17, 2015 02:30 | July 18, 2015 16:30 | 1d 14h | 1,705 | 13K |
| 9 | May 25, 2015 12:00 | May 26, 2015 04:00 | 16h | 1,671 | 3,408 |
| 10 | May 7, 2015 23:15 | May 8, 2015 04:15 | 5h | 1,452 | 1,462 |
Outage episodes by size in 2015: 55 reached 100+ customers, 16 reached 1,000+ customers, 1 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 2015, 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 | 2015 | 5.9 hrs | 1.39 | 2.2 hrs | 1.04 |
| Corn Belt Energy Corporation | 2015 | 10.7 hrs | 5.30 | 4.1 hrs | 4.20 |
| Ameren | - | - | - | - | - |
| Menard 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 2015; 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, 2015, 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/2015/illinois/tazewell-county