ONCE the power has been restored, do not switch on all your appliances at once as the power supply might still be unstable.
Only switch on those you need immediately.
It is a good idea to switch appliances on and off systematically to make sure that no damage was caused by the power interruption. Remember to reset electronic clocks, especially your bedside alarm, and other timers that could have been disturbed, such as the pool pump or sprinkler system.