I hope the answer to this problem is not smart grids...
It’s who the smart grids can listen to.
Just last night I was reading in some music equipment catalog about devices intended to use “white space” (spectrum freed up by changing over from old analog TV to the new digital stuff). They said, no problem, you can put entries into a public FCC database to reserve a piece of spectrum for a given time. I was thinkin’, hoo boy won’t THAT be easy to spam and DOS! Especially when gummit public safety communications are supposed to amicably “share” this.