County annual report · FIPS 17189
2020 Washington County, IL Power Outage Report
In 2020, customers in Washington County, IL went without power for an average of 4.9 hours, a total of 36K customer-hours (Illinois average 5.9 hours). That ranks 34th worst of 102 Illinois counties and 1420th 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 Washington 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 | August 10, 2020 22:30 | August 13, 2020 23:45 | 3d 1h | 1,381 | 20K |
| 2 | June 3, 2020 14:45 | June 3, 2020 17:15 | 2h 30m | 1,278 | 961 |
| 3 | July 21, 2020 21:15 | July 22, 2020 08:15 | 11h | 1,147 | 3,020 |
| 4 | October 15, 2020 09:15 | October 15, 2020 11:30 | 2h 15m | 945 | 1,825 |
| 5 | April 23, 2020 17:30 | April 23, 2020 17:45 | 15m | 801 | 200 |
| 6 | July 29, 2020 20:30 | July 29, 2020 22:30 | 2h | 665 | 1,065 |
| 7 | October 7, 2020 21:15 | October 7, 2020 23:45 | 2h 30m | 658 | 1,357 |
| 8 | May 2, 2020 13:45 | May 2, 2020 16:30 | 2h 45m | 493 | 457 |
| 9 | May 15, 2020 21:15 | May 15, 2020 21:45 | 30m | 279 | 140 |
| 10 | April 16, 2020 13:45 | April 16, 2020 17:15 | 3h 30m | 163 | 209 |
Outage episodes by size in 2020: 16 reached 100+ customers, 3 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 Washington 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 |
| Tri-County Electric Coop, Inc (IL) | 2020 | 2.7 hrs | 1.14 | 83 min | 0.85 |
| Ameren | - | - | - | - | - |
| Egyptian Electric Coop Assn | - | - | - | - | - |
| Clinton County Elec Coop, Inc | - | - | - | - | - |
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 ÷ 7,318 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. Washington County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Washington 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/washington-county