County annual report · FIPS 17023
2019 Clark County, IL Power Outage Report
In 2019, customers in Clark County, IL went without power for an average of 1.1 hours, a total of 8,291 customer-hours (Illinois average 1.8 hours). That ranks 90th worst of 102 Illinois counties and 2467th of 2,945 nationally.
Compared with IL, the US and 2018
Coverage line is EAGLE-I's share of Illinois customers tracked each year.
Biggest outages in Clark County, 2019
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | November 8, 2019 09:00 | November 8, 2019 16:30 | 7h 30m | 802 | 452 |
| 2 | October 26, 2019 23:45 | October 27, 2019 16:30 | 16h 45m | 450 | 1,476 |
| 3 | July 26, 2019 15:45 | July 26, 2019 20:00 | 4h 15m | 294 | 299 |
| 4 | July 31, 2019 15:00 | July 31, 2019 15:45 | 45m | 294 | 219 |
| 5 | August 2, 2019 14:15 | August 2, 2019 15:00 | 45m | 294 | 148 |
| 6 | June 20, 2019 12:15 | June 20, 2019 13:15 | 1h | 289 | 219 |
| 7 | June 23, 2019 18:00 | June 23, 2019 19:15 | 1h 15m | 289 | 308 |
| 8 | March 27, 2019 00:45 | March 27, 2019 02:15 | 1h 30m | 268 | 402 |
| 9 | July 1, 2019 06:45 | July 8, 2019 02:15 | 6d 19h | 264 | 759 |
| 10 | November 5, 2019 08:30 | November 5, 2019 10:00 | 1h 30m | 243 | 306 |
Outage episodes by size in 2019: 16 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 Clark County reported on EIA Form 861 for 2019, 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 |
| Ameren | - | - | - | - | - |
| Norris Electric Coop | - | - | - | - | - |
| Coles-Moultrie Electric Coop | - | - | - | - | - |
| Enerstar Power Corp | - | - | - | - | - |
| City of Casey - (IL) | - | - | - | - | - |
| City of Marshall - (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 99% of Illinois's customers in 2019; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 7,829 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. Clark County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Clark County, IL annual power outage report, 2019, 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/2019/illinois/clark-county