County annual report · FIPS 17125
2016 Mason County, IL Power Outage Report
In 2016, customers in Mason County, IL went without power for an average of 5.1 hours, a total of 25K customer-hours (Illinois average 1.5 hours). That ranks 12th worst of 100 Illinois counties and 651st 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 Mason 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 22, 2016 10:15 | June 23, 2016 05:15 | 19h | 2,621 | 12K |
| 2 | July 1, 2016 15:30 | July 6, 2016 20:15 | 5d 4h | 796 | 714 |
| 3 | December 19, 2016 10:45 | December 19, 2016 16:00 | 5h 15m | 777 | 1,770 |
| 4 | April 2, 2016 16:00 | April 3, 2016 07:00 | 15h | 698 | 2,123 |
| 5 | May 18, 2016 16:45 | May 18, 2016 23:00 | 6h 15m | 693 | 684 |
| 6 | March 7, 2016 11:30 | March 7, 2016 16:00 | 4h 30m | 362 | 1,002 |
| 7 | May 29, 2016 01:00 | May 29, 2016 11:30 | 10h 30m | 214 | 511 |
| 8 | August 5, 2016 05:00 | August 5, 2016 13:00 | 8h | 208 | 289 |
| 9 | July 25, 2016 01:45 | July 25, 2016 19:15 | 17h 30m | 171 | 875 |
| 10 | April 24, 2016 04:00 | April 24, 2016 07:15 | 3h 15m | 163 | 437 |
Outage episodes by size in 2016: 15 reached 100+ customers, 1 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 Mason 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 |
| 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 2016; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 4,847 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. Mason County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Mason 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/mason-county