County annual report · FIPS 17189
2021 Washington County, IL Power Outage Report
In 2021, customers in Washington County, IL went without power for an average of 3.1 hours, a total of 23K customer-hours (Illinois average 2.3 hours). That ranks 44th worst of 102 Illinois counties and 1798th of 2,974 nationally.
Compared with IL, the US and 2020
Coverage line is EAGLE-I's share of Illinois customers tracked each year.
Biggest outages in Washington County, 2021
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 16, 2021 13:15 | February 16, 2021 18:45 | 5h 30m | 2,286 | 7,603 |
| 2 | July 5, 2021 11:45 | July 5, 2021 13:00 | 1h 15m | 1,987 | 2,008 |
| 3 | April 4, 2021 14:45 | April 4, 2021 16:00 | 1h 15m | 654 | 580 |
| 4 | October 31, 2021 05:45 | October 31, 2021 12:45 | 7h | 501 | 620 |
| 5 | February 17, 2021 17:45 | February 17, 2021 19:15 | 1h 30m | 391 | 500 |
| 6 | February 17, 2021 20:45 | February 18, 2021 02:15 | 5h 30m | 366 | 409 |
| 7 | April 7, 2021 16:00 | April 7, 2021 18:00 | 2h | 366 | 399 |
| 8 | January 19, 2021 20:45 | January 19, 2021 21:15 | 30m | 326 | 163 |
| 9 | June 11, 2021 21:30 | June 11, 2021 21:45 | 15m | 323 | 81 |
| 10 | October 1, 2021 06:30 | October 1, 2021 09:30 | 3h | 287 | 861 |
Outage episodes by size in 2021: 21 reached 100+ customers, 2 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 2021, 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 | 2021 | 3.2 hrs | 1.11 | 2.0 hrs | 0.88 |
| Tri-County Electric Coop, Inc (IL) | 2021 | 3.5 hrs | 1.86 | 63 min | 1.09 |
| 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 98% of Illinois's customers in 2021; 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, 2021, 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/2021/illinois/washington-county