County annual report · FIPS 17131
2019 Mercer County, IL Power Outage Report
In 2019, customers in Mercer County, IL went without power for an average of 11.4 hours, a total of 102K customer-hours (Illinois average 1.8 hours). That ranks 4th worst of 102 Illinois counties and 472nd 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 Mercer 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 | February 12, 2019 02:15 | February 14, 2019 22:30 | 2d 20h | 6,907 | 43K |
| 2 | January 2, 2019 19:45 | January 2, 2019 21:15 | 1h 30m | 6,182 | 2,664 |
| 3 | November 27, 2019 02:00 | November 29, 2019 16:15 | 2d 14h | 4,158 | 14K |
| 4 | June 2, 2019 14:00 | June 2, 2019 17:15 | 3h 15m | 2,163 | 5,410 |
| 5 | April 30, 2019 17:15 | May 1, 2019 19:15 | 1d 2h | 1,994 | 1,024 |
| 6 | May 8, 2019 09:45 | May 8, 2019 10:45 | 1h | 1,993 | 1,829 |
| 7 | December 27, 2019 04:15 | December 27, 2019 07:00 | 2h 45m | 947 | 1,659 |
| 8 | June 30, 2019 18:30 | July 2, 2019 14:00 | 1d 19h | 945 | 4,777 |
| 9 | November 2, 2019 14:30 | November 2, 2019 17:30 | 3h | 943 | 2,011 |
| 10 | September 15, 2019 09:15 | September 15, 2019 20:45 | 11h 30m | 940 | 1,979 |
Outage episodes by size in 2019: 33 reached 100+ customers, 6 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 Mercer 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 |
| MidAmerican Energy Co | 2018 | 1.9 hrs | 1.18 | 75 min | 0.96 |
| Ameren | - | - | - | - | - |
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 ÷ 8,972 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. Mercer County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Mercer 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/mercer-county