Greene County Power Outage History
2014–2025 · Illinois
Top 20% most reliable nationally — infrequent, short outages. How grades are calculated
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Jun 14, 2015 | 6 hrs | 3,428 (48%) | Thunderstorm Wind |
| Oct 30, 2016 | 4 hrs | 2,452 (35%) | Unnamed event |
| Apr 10, 2017 | 1 hrs | 2,423 (34%) | Unnamed event |
| Jan 8, 2018 | 3 hrs | 2,337 (33%) | Unnamed event |
| Jun 8, 2015 | 1 hrs | 2,061 (29%) | Unnamed event |
Over the 12 years from 2014 to 2025, Greene County recorded 157 distinct power outage events, averaging 2.9 hours per event.
The single worst outage on record in Greene County started June 14, 2015 (Thunderstorm Wind), lasting 6 hours and leaving up to 3,428 customers without power (48% of the county) at its peak.
July has historically been the worst month for outages in Greene County, with 29 events recorded during that month across the dataset.
Based on this history, Greene County earns a Reliability Grade of A, placing it in the 81st percentile nationally for grid reliability (higher percentile = more reliable).
Sized for Greene County's outage profile
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Similar counties in Illinois
Counties with the closest reliability grade and national percentile to Greene County.
| County | Grade | National percentile |
|---|---|---|
| McLean County | A | 81st |
| DuPage County | A | 80th |
| Montgomery County | A | 80th |
| Menard County | A | 82nd |
| Kane County | B | 79th |
FAQ
How often does power go out in Greene County?
Between 2014 and 2025, Greene County recorded 157 outage events, averaging 2.9 hours each.
What is Greene County's reliability grade?
Greene County has a Reliability Grade of A, in the 81st national percentile.
What was the worst power outage in Greene County?
The worst outage on record started June 14, 2015 (Thunderstorm Wind), lasting 6 hours and affecting up to 3,428 customers.