County annual report · FIPS 17189
2025 Washington County, IL Power Outage Report
In 2025, customers in Washington County, IL went without power for an average of 4.8 hours, a total of 35K customer-hours (Illinois average 2.5 hours). That ranks 38th worst of 102 Illinois counties and 1548th of 3,000 nationally.
Compared with IL, the US and 2024
Coverage line is EAGLE-I's share of Illinois customers tracked each year.
Biggest outages in Washington County, 2025
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | January 6, 2025 08:00 | January 6, 2025 22:30 | 14h 30m | 3,750 | 15K |
| 2 | April 2, 2025 16:45 | April 3, 2025 20:15 | 1d 3h | 430 | 856 |
| 3 | April 29, 2025 13:00 | April 29, 2025 18:00 | 5h | 322 | 919 |
| 4 | March 23, 2025 12:30 | March 23, 2025 20:00 | 7h 30m | 316 | 1,737 |
| 5 | December 25, 2025 16:00 | December 25, 2025 19:45 | 3h 45m | 310 | 610 |
| 6 | July 1, 2025 00:15 | July 1, 2025 03:15 | 3h | 295 | 371 |
| 7 | November 26, 2025 05:15 | November 26, 2025 12:15 | 7h | 287 | 2,009 |
| 8 | October 24, 2025 04:15 | October 24, 2025 11:30 | 7h 15m | 284 | 2,059 |
| 9 | April 4, 2025 22:45 | April 7, 2025 12:45 | 2d 14h | 272 | 873 |
| 10 | May 20, 2025 05:30 | May 20, 2025 18:15 | 12h 45m | 243 | 605 |
Outage episodes by size in 2025: 23 reached 100+ customers, 1 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 2025, 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 | 2024 | 3.7 hrs | 1.13 | 2.0 hrs | 0.91 |
| Egyptian Electric Coop Assn | 2024 | 2.1 hrs | - | - | - |
| Tri-County Electric Coop, Inc (IL) | 2024 | 6.2 hrs | 2.50 | 64 min | 0.73 |
| Ameren | - | - | - | - | - |
| 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 n/a of Illinois's customers in 2025; 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, 2025, 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/2025/illinois/washington-county