County annual report · FIPS 17155
2025 Putnam County, IL Power Outage Report
In 2025, customers in Putnam County, IL went without power for an average of 16.0 hours, a total of 40K customer-hours (Illinois average 2.5 hours). That ranks 6th worst of 102 Illinois counties and 463rd 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 Putnam 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 | March 15, 2025 03:30 | March 17, 2025 17:00 | 2d 13h | 1,458 | 25K |
| 2 | July 6, 2025 12:30 | July 6, 2025 15:00 | 2h 30m | 380 | 950 |
| 3 | April 2, 2025 10:00 | April 2, 2025 15:15 | 5h 15m | 379 | 446 |
| 4 | November 26, 2025 19:30 | November 27, 2025 12:15 | 16h 45m | 370 | 2,841 |
| 5 | December 18, 2025 16:45 | December 18, 2025 19:30 | 2h 45m | 299 | 300 |
| 6 | May 20, 2025 10:15 | May 20, 2025 19:30 | 9h 15m | 284 | 533 |
| 7 | May 18, 2025 11:15 | May 18, 2025 22:15 | 11h | 254 | 79 |
| 8 | March 19, 2025 20:30 | March 20, 2025 01:30 | 5h | 249 | 792 |
| 9 | March 20, 2025 07:00 | March 20, 2025 19:00 | 12h | 244 | 1,125 |
| 10 | May 21, 2025 20:15 | May 22, 2025 05:15 | 9h | 217 | 1,576 |
Outage episodes by size in 2025: 17 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 Putnam 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 |
| Corn Belt Energy Corporation | 2024 | 5.2 hrs | 5.21 | 2.5 hrs | 4.68 |
| Ameren | - | - | - | - | - |
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 ÷ 2,501 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. Putnam County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Putnam 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/putnam-county