Main Causes of Power Outages
Natural phenomena such as wind, lightning, freezing rain, iced-up lines, wildlife and snow cause the majority of power failures. Tree branches in contact with power lines can also cause an outage.
Although EPCOR's equipment is rigorously maintained, problems can occur. Cables, connectors, transformers, switches, and many other types of equipment can fail, accidentally triggering an outage.
A residential customer can cause an outage by working with a ladder or antenna too close to power lines, or by hitting a buried line when doing excavation work. Traffic accidents can also affect the power supply if a piece of power equipment is hit and damaged.
Occasionally, EPCOR intentionally interrupts service in order to conduct certain maintenance or repair work that cannot be safely handled any other way. EPCOR keeps these scheduled interruptions to a minimum and attempt to schedule them for the least inconvenient times.