What Causes Outages?

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What Causes Outages?

The most common cause of power outages in Nova Scotia is trees interfering with power lines, usually during high wind conditions.

There are many reasons the power to your home or business might go out, including factors that are both in and out of our control. We work hard every year to reduce the number of outages by making investments in new technologies, equipment upgrades and replacements, and even tree trimming to help make the electrical system more reliable. But outages can and do happen for various reasons.


Many outages are caused by weather events, and the biggest cause is trees and branches contacting power lines, usually from strong winds. Outages can also be caused by lightning strikes, heavy snow or ice buildup on lines and equipment, high winds, hurricanes or other extreme weather conditions.


Outages can also be caused by motor vehicle accidents impacting poles or equipment, equipment failure, construction activity, and trees or animals contacting power lines and equipment.

Planned Outages

To help prevent unplanned outages, we sometimes need to disconnect power to certain areas temporarily while our crews safely perform maintenance or make upgrades to equipment. While the safety of our customers and employees is our first priority, we make every effort to ensure planned outages are as short as possible and take place at times of least inconvenience to customers. In situations like these, we’ll call affected customers beforehand to let them know the expected duration of the outage. You can update your account information online to make sure we have the correct contact information.