If you are scheduling a power outage for an entire area for “maintenance”, that will last for two hours, you really need to notify the people in that area.
For the purposes of this statement, notify does not mean “put a message on the outage line to let people know when they call in to report the outage”.
The fact that you are scheduling this outage for 2 – 4 AM does not remove the requirement that you notify people. Some people might be awake and working, and the power outage might cause them to lose a lot of work that hadn’t yet been saved.
Note also that it is winter. Imagine someone who uses a pellet stove to heat their home–a not uncommon scenario in Nova Scotia, particularly in the region when you took out the power. A power interuption of any significant length will cause a pellet stove to go out. It won’t come back on by itself. If the stove goes out at 2am, these people will be waking up to a really cold house in the morning.
Now, is it too much to ask that you A) run an ad in the local weekly paper that covers the area you intend to interrupt power in, and B) send an email to those customers for whom you have an email address? I notice you have no trouble emailing bills.