Most planned outages are scheduled well in advance. Crews will be scheduled to do the work on a specific day and time. This type of planned outage is necessary to safely improve reliability in the area. An example would be a pole that needs to be replaced to prevent an unplanned outage from occurring in the future
Some outages are required to make emergency repairs. This type of outage needs to happen right away, likely within the hour, for the safety of crews, customers and the electrical system. An example would be a broken pole cause by a vehicle accident.