County annual report · FIPS 17127
2023 Massac County, IL Power Outage Report
In 2023, customers in Massac County, IL went without power for an average of 0.3 hours, a total of 2,713 customer-hours (Illinois average 4.0 hours). That ranks 102nd worst of 102 Illinois counties and 2855th of 2,977 nationally.
Compared with IL, the US and 2022
Coverage line is EAGLE-I's share of Illinois customers tracked each year.
Biggest outages in Massac County, 2023
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 10, 2023 12:15 | April 10, 2023 12:45 | 30m | 718 | 181 |
| 2 | August 18, 2023 15:00 | August 18, 2023 16:00 | 1h | 611 | 459 |
| 3 | July 24, 2023 20:30 | July 25, 2023 00:15 | 3h 45m | 447 | 530 |
| 4 | April 8, 2023 03:45 | April 8, 2023 06:00 | 2h 15m | 313 | 704 |
| 5 | March 3, 2023 17:45 | March 4, 2023 05:00 | 11h 15m | 237 | 349 |
| 6 | July 20, 2023 16:00 | July 20, 2023 19:45 | 3h 45m | 49 | 45 |
| 7 | July 18, 2023 18:30 | July 19, 2023 03:45 | 9h 15m | 26 | 227 |
| 8 | November 2, 2023 20:45 | November 2, 2023 23:30 | 2h 45m | 17 | 47 |
| 9 | July 27, 2023 16:45 | July 27, 2023 19:00 | 2h 15m | 8 | 9 |
| 10 | September 8, 2023 07:15 | September 8, 2023 10:15 | 3h | 6 | 17 |
Outage episodes by size in 2023: 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 2023, 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 | 2023 | 9.9 hrs | 1.33 | 1.9 hrs | 0.82 |
| Southeastern IL Elec Coop, Inc | 2023 | 3.4 hrs | 1.80 | 2.3 hrs | 1.37 |
| 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 2023; 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, 2023, 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/2023/illinois/massac-county