County annual report · FIPS 17127
2024 Massac County, IL Power Outage Report
In 2024, customers in Massac County, IL went without power for an average of 0.3 hours, a total of 2,452 customer-hours (Illinois average 3.0 hours). That ranks 102nd worst of 102 Illinois counties and 2893rd of 2,990 nationally.
Compared with IL, the US and 2023
Coverage line is EAGLE-I's share of Illinois customers tracked each year.
Biggest outages in Massac County, 2024
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | April 30, 2024 04:45 | April 30, 2024 05:30 | 45m | 700 | 364 |
| 2 | May 3, 2024 02:45 | May 3, 2024 03:15 | 30m | 645 | 163 |
| 3 | May 8, 2024 07:00 | May 8, 2024 14:45 | 7h 45m | 169 | 1,268 |
| 4 | July 10, 2024 16:30 | July 10, 2024 17:15 | 45m | 169 | 127 |
| 5 | September 27, 2024 08:45 | September 27, 2024 10:00 | 1h 15m | 133 | 166 |
| 6 | June 11, 2024 15:45 | June 11, 2024 16:45 | 1h | 57 | 57 |
| 7 | April 2, 2024 10:45 | April 2, 2024 11:45 | 1h | 34 | 34 |
| 8 | July 11, 2024 15:15 | July 11, 2024 15:30 | 15m | 24 | 6 |
| 9 | March 7, 2024 17:45 | March 7, 2024 18:00 | 15m | 20 | 5 |
| 10 | May 27, 2024 23:15 | May 28, 2024 13:30 | 14h 15m | 13 | 85 |
Outage episodes by size in 2024: 5 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 2024, 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 | 2024 | 3.7 hrs | 1.13 | 2.0 hrs | 0.91 |
| Southeastern IL Elec Coop, Inc | 2024 | 10.0 hrs | 3.07 | 2.3 hrs | 1.50 |
| 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 n/a of Illinois's customers in 2024; 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, 2024, 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/2024/illinois/massac-county