Transformer explosion at CWL substation cuts power to 1,200 customers
EIR-0242Provisional entry. Published from first reports and rechecked automatically as more sources appear. No further update is scheduled; the entry stays provisional until new information is published.
On a Thursday evening in Jonesboro, Arkansas, a potential transformer (PT transformer) at a City Water and Light (CWL) electrical substation adjacent to a Chuck E. Cheese near Turtle Creek failed and exploded. The explosion was captured on a Jonesboro Police Department dash camera as an officer was conducting a nearby traffic stop. The failure interrupted electricity to approximately 1,200 CWL customers. Utility crews rerouted power through other circuits and restored service to all affected customers within about 30 minutes. The transformer forms part of substation equipment that steps down voltage from CWL's 69-kilovolt transmission system for distribution to homes and businesses. The cause of the failure remained under investigation, with the utility noting that extreme heat on the day of the incident could have been a contributing factor, though this was not confirmed.
CWL stated that high temperatures on the day of the incident could potentially have been a factor in the transformer failure, though the utility could not confirm this as the direct cause. The cause remained under investigation at the time of reporting.
- Utilities should ensure substation equipment condition monitoring accounts for the cumulative stress of sustained high-temperature periods, not just single hot days.
- Rapid rerouting capability through alternate circuits can significantly reduce customer outage duration following equipment failure.
- Publicly available incident footage, such as dash camera video, can support transparent post-incident investigation and public communication.
Published 2026-09-07. Written from public reporting. Descriptive, not investigative. See the data accuracy disclaimer.