County annual report · FIPS 17125
2019 Mason County, IL Power Outage Report
In 2019, customers in Mason County, IL went without power for an average of 3.2 hours, a total of 15K customer-hours (Illinois average 1.8 hours). That ranks 40th worst of 102 Illinois counties and 1577th of 2,945 nationally.
Compared with IL, the US and 2018
Coverage line is EAGLE-I's share of Illinois customers tracked each year.
Biggest outages in Mason County, 2019
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 26, 2019 02:30 | June 26, 2019 15:15 | 12h 45m | 1,166 | 3,932 |
| 2 | September 8, 2019 09:15 | September 8, 2019 10:15 | 1h | 799 | 601 |
| 3 | September 27, 2019 16:00 | September 27, 2019 19:45 | 3h 45m | 798 | 869 |
| 4 | November 4, 2019 21:45 | November 5, 2019 06:00 | 8h 15m | 674 | 1,475 |
| 5 | June 5, 2019 17:00 | June 6, 2019 17:15 | 1d | 465 | 415 |
| 6 | May 9, 2019 18:45 | May 9, 2019 19:45 | 1h | 309 | 309 |
| 7 | March 14, 2019 17:30 | March 15, 2019 04:30 | 11h | 264 | 378 |
| 8 | June 16, 2019 11:00 | June 16, 2019 14:45 | 3h 45m | 252 | 629 |
| 9 | March 15, 2019 05:45 | March 15, 2019 09:00 | 3h 15m | 222 | 611 |
| 10 | May 29, 2019 02:00 | May 29, 2019 08:00 | 6h | 205 | 1,226 |
Outage episodes by size in 2019: 16 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 2019, 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 | 2018 | 3.5 hrs | 1.06 | 1.8 hrs | 0.90 |
| Menard Electric Coop | 2018 | 2.9 hrs | 1.75 | 2.9 hrs | 1.75 |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 99% of Illinois's customers in 2019; 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, 2019, 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/2019/illinois/mason-county