County annual report · FIPS 17189
2023 Washington County, IL Power Outage Report
In 2023, customers in Washington County, IL went without power for an average of 33.5 hours, a total of 245K customer-hours (Illinois average 4.0 hours). That ranks 3rd worst of 102 Illinois counties and 198th of 2,977 nationally.
Compared with IL, the US and 2022
Coverage line is EAGLE-I's share of Illinois customers tracked each year.
Biggest outages in Washington County, 2023
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | July 1, 2023 00:45 | July 6, 2023 16:30 | 5d 15h | 4,804 | 195K |
| 2 | April 1, 2023 00:15 | April 1, 2023 17:00 | 16h 45m | 1,420 | 9,046 |
| 3 | August 5, 2023 10:45 | August 6, 2023 06:15 | 19h 30m | 1,251 | 1,041 |
| 4 | July 29, 2023 22:00 | August 1, 2023 01:45 | 2d 3h | 1,062 | 13K |
| 5 | December 11, 2023 14:30 | December 11, 2023 17:15 | 2h 45m | 1,024 | 1,650 |
| 6 | July 20, 2023 16:45 | July 26, 2023 14:00 | 5d 21h | 980 | 2,447 |
| 7 | February 22, 2023 20:45 | February 23, 2023 08:00 | 11h 15m | 872 | 2,449 |
| 8 | January 26, 2023 18:15 | January 26, 2023 18:45 | 30m | 727 | 364 |
| 9 | February 9, 2023 09:45 | February 9, 2023 19:15 | 9h 30m | 666 | 791 |
| 10 | April 5, 2023 09:15 | April 6, 2023 08:30 | 23h 15m | 595 | 2,654 |
Outage episodes by size in 2023: 22 reached 100+ customers, 5 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 2023, 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 | 2023 | 9.9 hrs | 1.33 | 1.9 hrs | 0.82 |
| Egyptian Electric Coop Assn | 2023 | 4.4 hrs | - | - | - |
| Tri-County Electric Coop, Inc (IL) | 2023 | 4.3 hrs | 1.91 | 52 min | 0.52 |
| 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 2023; 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, 2023, 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/2023/illinois/washington-county