County annual report · FIPS 17189
2015 Washington County, IL Power Outage Report
In 2015, customers in Washington County, IL went without power for an average of 2.8 hours, a total of 20K customer-hours (Illinois average 2.3 hours). That ranks 33rd worst of 100 Illinois counties and 969th of 2,484 nationally.
Compared with IL, the US
Coverage line is EAGLE-I's share of Illinois customers tracked each year.
Biggest outages in Washington County, 2015
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | October 16, 2015 16:30 | October 16, 2015 21:00 | 4h 30m | 1,338 | 1,770 |
| 2 | September 11, 2015 02:00 | September 12, 2015 00:30 | 22h 30m | 950 | 7,175 |
| 3 | July 20, 2015 07:00 | July 20, 2015 11:00 | 4h | 689 | 1,296 |
| 4 | December 23, 2015 17:45 | December 24, 2015 02:15 | 8h 30m | 323 | 1,163 |
| 5 | May 11, 2015 15:00 | May 11, 2015 22:45 | 7h 45m | 294 | 1,097 |
| 6 | July 26, 2015 12:15 | July 26, 2015 17:15 | 5h | 258 | 450 |
| 7 | November 13, 2015 14:30 | November 13, 2015 15:30 | 1h | 226 | 173 |
| 8 | June 26, 2015 01:30 | June 26, 2015 10:30 | 9h | 203 | 458 |
| 9 | April 17, 2015 17:00 | April 17, 2015 19:00 | 2h | 201 | 202 |
| 10 | May 8, 2015 22:45 | May 9, 2015 14:15 | 15h 30m | 201 | 715 |
Outage episodes by size in 2015: 18 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 2015, 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 | 2015 | 5.9 hrs | 1.39 | 2.2 hrs | 1.04 |
| Tri-County Electric Coop, Inc (IL) | 2015 | 2.7 hrs | 2.00 | 2.0 hrs | 1.50 |
| 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 n/a of Illinois's customers in 2015; 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, 2015, 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/2015/illinois/washington-county