When you are in the middle of the matrix, you should have very reliable power, as long as the system is working right.
It is where grid problems will affect you most tho.
The OPs original point is valid tho. If the grid is running at capacity, it doesn't take much to push it over the edge.
That makes me wonder about the addition of solar to the grid. When these things are planned, they assume a 9-5 society where the heavy use is when the sun is shining but we are becoming a 24x7 society and there will still be significant demand after dark.
Traditional generation techniques will be needed to serve that load.
