County annual report · FIPS 17001
2015 Adams County, IL Power Outage Report
In 2015, customers in Adams County, IL went without power for an average of 26.5 hours, a total of 843K customer-hours (Illinois average 2.3 hours). That ranks 3rd worst of 100 Illinois counties and 87th 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 Adams 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 | July 12, 2015 23:00 | July 19, 2015 01:45 | 6d 2h | 21,688 | 780K |
| 2 | September 1, 2015 12:30 | September 1, 2015 20:15 | 7h 45m | 5,742 | 6,013 |
| 3 | July 23, 2015 13:30 | July 24, 2015 22:30 | 1d 9h | 4,475 | 6,817 |
| 4 | November 11, 2015 22:45 | November 13, 2015 04:00 | 1d 5h | 2,210 | 18K |
| 5 | June 25, 2015 22:30 | June 26, 2015 04:00 | 5h 30m | 1,572 | 1,985 |
| 6 | July 19, 2015 03:00 | July 20, 2015 22:45 | 1d 19h | 1,013 | 3,124 |
| 7 | December 26, 2015 17:00 | December 26, 2015 19:00 | 2h | 830 | 831 |
| 8 | November 13, 2015 19:45 | November 13, 2015 20:15 | 30m | 804 | 202 |
| 9 | August 15, 2015 22:15 | August 16, 2015 02:45 | 4h 30m | 756 | 1,103 |
| 10 | November 19, 2015 16:45 | November 19, 2015 18:30 | 1h 45m | 673 | 679 |
Outage episodes by size in 2015: 29 reached 100+ customers, 6 reached 1,000+ customers, 1 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 Adams 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 |
| Ameren | - | - | - | - | - |
| Illinois Rural Electric Coop | - | - | - | - | - |
| Adams Electric Coop | - | - | - | - | - |
| Western Illinois Elec Coop | - | - | - | - | - |
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 ÷ 31,760 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. Adams County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Adams 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/adams-county