Actual info on scheduled blackouts here.
We're getting one tomorrow. My main concerns are
1) The blackout falls on commuting hours. How many of the traffic lights in my commute have a back up power system?
2) What will become of the contents of my fridge?
I am thankful my concerns are this trivial, but the first has potential to become tricky. Apologies to people who have Googled "planned blackout" or something and found no helpful information on this blog.