CAUSES OF POWER OUTAGES:
Weather
Wind, lightning, freezing rain and snow cause the majority of power failures. Wind causes tree limbs to come into contact with wires resulting in service interruptions.
Equipment Failure
Toronto Hydro-Electric System's equipment is regularly maintained, but problems can occur. Cables, connectors, transformers, switches and many other types of equipment can fail, accidentally triggering an outage.
Car Accident
A car accidentally hitting and damaging our power equipment can also affect the power supply.
Animals
Believe it or not, animals such as crows, squirrels and raccoons are responsible for numerous outages in the Toronto area. They sometimes chew into lines or come into contact with a piece of equipment and an energized line, resulting in a service interruption to you.
Cable Dig-ins
Inadvertently hitting a buried line while excavating, damages or breaks an underground cable and results in an outage.
Trees
Trees that grow into overhead lines cause many outages to the system and strong storms can cause trees or branches to fall and tear down power lines.
Scheduled Interruptions
Occasionally, Toronto Hydro interrupts service in order to allow our crews to safely conduct certain maintenance or repair work. We try and schedule them at the least inconvenient times for you and try and keep them to a minimum. If circumstances allow, we do try and provide you with prior notice before we interrupt the service.
POWER RESTORATION
How Does Toronto Hydro Restore Service?
Your calls are received by our Call Centre Dispatchers, recorded on a trouble ticket and forwarded to our Control Centre. Trouble tickets are sorted and assigned priority through our established Prioritization Guidelines. System Response crews are then dispatched to start the restoration process.
Guidelines for Prioritizing Service Restoration
- We first work to correct any situations that pose a safety hazard to the public (e.g. downed wires), or calls received from the police, fire or ambulance
- We then work to restore power to the largest number of customers affected at one time by making repairs to substations or major feeder lines
- Then we focus on restoring power to smaller neighbourhoods, or streets
- Finally, we work to restore power to individual homes or businesses