County annual report · FIPS 17127
2020 Massac County, IL Power Outage Report
In 2020, customers in Massac County, IL went without power for an average of 0.2 hours, a total of 1,344 customer-hours (Illinois average 5.9 hours). That ranks 102nd worst of 102 Illinois counties and 2922nd of 3,019 nationally.
Compared with IL, the US and 2019
Coverage line is EAGLE-I's share of Illinois customers tracked each year.
Biggest outages in Massac County, 2020
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | March 19, 2020 11:15 | March 19, 2020 12:00 | 45m | 711 | 357 |
| 2 | April 26, 2020 08:15 | April 26, 2020 18:15 | 10h | 643 | 305 |
| 3 | May 12, 2020 00:30 | May 12, 2020 02:30 | 2h | 45 | 68 |
| 4 | April 4, 2020 07:15 | April 4, 2020 11:15 | 4h | 33 | 124 |
| 5 | August 31, 2020 20:30 | August 31, 2020 21:45 | 1h 15m | 29 | 29 |
| 6 | October 23, 2020 21:00 | October 23, 2020 23:15 | 2h 15m | 23 | 47 |
| 7 | May 7, 2020 03:45 | May 7, 2020 05:45 | 2h | 21 | 35 |
| 8 | April 29, 2020 05:30 | April 29, 2020 07:00 | 1h 30m | 14 | 21 |
| 9 | March 29, 2020 01:30 | March 29, 2020 02:45 | 1h 15m | 8 | 10 |
| 10 | March 31, 2020 05:15 | March 31, 2020 11:45 | 6h 30m | 8 | 52 |
Outage episodes by size in 2020: 2 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 2020, 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 | 2020 | 3.7 hrs | 1.04 | 1.7 hrs | 0.82 |
| Southeastern IL Elec Coop, Inc | 2020 | 2.8 hrs | 1.23 | 1.5 hrs | 0.99 |
| 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 94% of Illinois's customers in 2020; 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, 2020, 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/2020/illinois/massac-county