County annual report · FIPS 17087
2019 Johnson County, IL Power Outage Report
In 2019, customers in Johnson County, IL went without power for an average of 3.2 hours, a total of 21K customer-hours (Illinois average 1.8 hours). That ranks 41st worst of 102 Illinois counties and 1586th 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 Johnson 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 | June 21, 2019 22:00 | June 24, 2019 12:30 | 2d 14h | 1,279 | 6,212 |
| 2 | April 19, 2019 21:00 | April 20, 2019 04:15 | 7h 15m | 1,260 | 1,366 |
| 3 | June 27, 2019 10:15 | June 27, 2019 10:30 | 15m | 1,260 | 315 |
| 4 | July 18, 2019 09:30 | July 18, 2019 12:30 | 3h | 1,151 | 2,969 |
| 5 | November 29, 2019 02:45 | December 2, 2019 13:15 | 3d 10h | 800 | 683 |
| 6 | October 9, 2019 12:00 | October 9, 2019 14:00 | 2h | 795 | 901 |
| 7 | March 14, 2019 16:30 | March 15, 2019 03:15 | 10h 45m | 593 | 2,080 |
| 8 | April 16, 2019 00:00 | April 16, 2019 00:15 | 15m | 330 | 83 |
| 9 | December 29, 2019 09:30 | December 29, 2019 17:15 | 7h 45m | 220 | 359 |
| 10 | October 16, 2019 12:15 | October 16, 2019 15:00 | 2h 45m | 218 | 501 |
Outage episodes by size in 2019: 15 reached 100+ customers, 4 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 Johnson 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 |
| Southeastern IL Elec Coop, Inc | 2018 | 10.8 hrs | 2.74 | 2.2 hrs | 1.43 |
| Ameren | - | - | - | - | - |
| Egyptian Electric Coop Assn | - | - | - | - | - |
| Southern Illinois Elec Coop | - | - | - | - | - |
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 ÷ 6,500 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. Johnson County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Johnson 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/johnson-county