County annual report · FIPS 17081
2016 Jefferson County, IL Power Outage Report
In 2016, customers in Jefferson County, IL went without power for an average of 3.7 hours, a total of 85K customer-hours (Illinois average 1.5 hours). That ranks 23rd worst of 100 Illinois counties and 837th of 2,391 nationally.
Compared with IL, the US and 2015
Coverage line is EAGLE-I's share of Illinois customers tracked each year.
Biggest outages in Jefferson County, 2016
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | June 16, 2016 08:30 | June 16, 2016 15:30 | 7h | 3,501 | 6,994 |
| 2 | July 4, 2016 13:00 | July 4, 2016 16:00 | 3h | 2,585 | 1,303 |
| 3 | May 7, 2016 23:15 | May 9, 2016 12:00 | 1d 12h | 1,845 | 18K |
| 4 | July 5, 2016 18:30 | July 5, 2016 20:15 | 1h 45m | 1,731 | 849 |
| 5 | February 24, 2016 08:00 | February 25, 2016 08:00 | 1d | 1,644 | 6,291 |
| 6 | May 11, 2016 21:00 | May 12, 2016 09:30 | 12h 30m | 1,614 | 12K |
| 7 | May 10, 2016 18:15 | May 10, 2016 23:00 | 4h 45m | 1,593 | 450 |
| 8 | January 10, 2016 05:30 | January 10, 2016 10:45 | 5h 15m | 1,563 | 5,085 |
| 9 | January 29, 2016 12:45 | January 29, 2016 15:15 | 2h 30m | 1,547 | 1,828 |
| 10 | March 2, 2016 19:00 | March 3, 2016 08:30 | 13h 30m | 1,545 | 4,445 |
Outage episodes by size in 2016: 28 reached 100+ customers, 12 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 Jefferson County reported on EIA Form 861 for 2016, 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 | 2016 | 4.0 hrs | 1.36 | 2.1 hrs | 1.04 |
| Tri-County Electric Coop, Inc (IL) | 2016 | 5.8 hrs | 2.39 | 87 min | 1.00 |
| Ameren | - | - | - | - | - |
| Wayne-White Counties Elec 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 2016; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 22,670 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. Jefferson County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Jefferson County, IL annual power outage report, 2016, 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/2016/illinois/jefferson-county