County annual report · FIPS 17003
2018 Alexander County, IL Power Outage Report
In 2018, customers in Alexander County, IL went without power for an average of 3.8 hours, a total of 11K customer-hours (Illinois average 2.5 hours). That ranks 30th worst of 102 Illinois counties and 1302nd 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 Alexander 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 22:30 | 1d 21h | 837 | 5,823 |
| 2 | January 8, 2018 16:30 | January 8, 2018 18:15 | 1h 45m | 605 | 1,058 |
| 3 | August 15, 2018 19:45 | August 15, 2018 20:15 | 30m | 495 | 124 |
| 4 | January 31, 2018 02:45 | January 31, 2018 03:30 | 45m | 244 | 183 |
| 5 | February 25, 2018 00:00 | February 25, 2018 01:00 | 1h | 243 | 185 |
| 6 | June 26, 2018 19:00 | June 27, 2018 01:15 | 6h 15m | 242 | 219 |
| 7 | September 22, 2018 18:30 | September 23, 2018 00:00 | 5h 30m | 238 | 659 |
| 8 | December 1, 2018 13:30 | December 2, 2018 00:45 | 11h 15m | 218 | 969 |
| 9 | August 8, 2018 07:30 | August 8, 2018 11:15 | 3h 45m | 206 | 710 |
| 10 | April 20, 2018 15:30 | April 20, 2018 17:15 | 1h 45m | 185 | 324 |
Outage episodes by size in 2018: 12 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 Alexander 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 |
| Southern Illinois Elec Coop | - | - | - | - | - |
| Cairo Public Utility Company | - | - | - | - | - |
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 ÷ 2,842 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. Alexander County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Alexander 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/alexander-county