County annual report · FIPS 17127
2018 Massac County, IL Power Outage Report
In 2018, customers in Massac County, IL went without power for an average of 1.4 hours, a total of 11K customer-hours (Illinois average 2.5 hours). That ranks 76th worst of 102 Illinois counties and 2133rd of 2,798 nationally.
Compared with IL, the US and 2017
Coverage line is EAGLE-I's share of Illinois customers tracked each year.
Biggest outages in Massac County, 2018
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 29, 2018 01:15 | June 30, 2018 11:30 | 1d 10h | 731 | 4,304 |
| 2 | January 12, 2018 03:30 | January 12, 2018 05:30 | 2h | 709 | 179 |
| 3 | April 14, 2018 15:30 | April 15, 2018 00:15 | 8h 45m | 664 | 4,476 |
| 4 | July 25, 2018 08:15 | July 25, 2018 11:30 | 3h 15m | 659 | 1,977 |
| 5 | June 25, 2018 02:45 | June 25, 2018 04:30 | 1h 45m | 319 | 86 |
| 6 | April 26, 2018 18:00 | April 26, 2018 20:15 | 2h 15m | 106 | 66 |
| 7 | July 24, 2018 20:30 | July 24, 2018 23:30 | 3h | 37 | 80 |
| 8 | June 30, 2018 12:30 | June 30, 2018 21:30 | 9h | 16 | 21 |
| 9 | July 15, 2018 00:45 | July 15, 2018 07:45 | 7h | 13 | 28 |
| 10 | January 2, 2018 03:00 | January 2, 2018 07:15 | 4h 15m | 7 | 28 |
Outage episodes by size in 2018: 6 reached 100+ customers, 0 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 Massac County reported on EIA Form 861 for 2018, 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 |
| Southeastern IL Elec Coop, Inc | 2018 | 10.8 hrs | 2.74 | 2.2 hrs | 1.43 |
| Southern Illinois Elec Coop | - | - | - | - | - |
| City of Metropolis - (IL) | - | - | - | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 92% of Illinois's customers in 2018; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 8,175 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. Massac County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Massac County, IL annual power outage report, 2018, 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/2018/illinois/massac-county