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Preparing for a scheduled power interruption and knowing what to do afterwards is important for the safety of your business, employees, and equipment and electronics. Here's what you need to know to be ready.

Have back-up power

We don't provide back-up generation for residences, businesses, institutions or organizations. You can contact an electrical contractor if you need back-up generation.

  • If you own your facility, the electrical contractor who looks after your regular maintenance or issues should be able to help you with back-up power.
  • If you rent, contact your building's superintendent to find out if back-up generation is available to you.

Prepare your business

Know your equipment

Decide what equipment you'll need to turn off before the power interruption and reset when power is restored.

When the power interruption is over:

  • Turn on the most essential equipment first.
  • Wait 15 minutes before reconnecting sensitive and less-critical equipment. This will give your system a chance to stabilize.

Three-phase motors and elevators

If there is an elevator or lift in the building, make sure all three-phase motors are shut down and elevators are locked off before the power interruption. If your elevators or lifts with three-phase motors have protective devices, make sure you know how to reset them once the interruption is over.

Site access

We'll let you know if we require access to your site and/or switch gear in order to do our work.

Alarm system

Notify your alarm company of the upcoming power interruption. If your alarm system has battery back-up, make sure it's working properly.

Computer and electrical equipment

Make sure computer and electrical equipment is properly shut down before the power interruption.


Any phones plugged into an electrical outlet won't work (including cordless phones, fax machines, etc.). Standard phones will work.

Fridge and freezer

Try to keep fridge and freezer doors shut during extended power interruptions. The temperature inside a fridge or freezer will only drop a few degrees over several hours if the door is kept shut.

Garage doors

Electric garage door openers won't work during a power interruption.

If you have an electric garage door and need access to your garage during the power interruption, you'll need to make arrangements to have the door locked open. You may want to make a plan to secure your building if the garage needs to be left open and allows access to the rest of your building.

Why we schedule power interruptions

Common reasons

Power interruptions are scheduled for several reasons including, but not limited to:

  • Allowing safe construction, installation, maintenance, inspection, repair or replacement of EPCOR power assets/equipment.
  • Maintaining a safe and reliable electric distribution system.
  • Managing emergency situations, forced interruptions, potential overloading of EPCOR's electric distribution system and other unforeseeable dangerous or hazardous conditions that require power interruptions to remedy the situation.

Estimated duration

The amount of time required for a scheduled power interruption varies. We'll give you an approximate time frame the required work typically takes by letter or phone.