Well, this guy does offer some corroboration of a power down, so that's interesting.
Of course this is only in one part of one tower, and the scope of it isn't clear, Forbes and this guy can only offer their own local knowledge of what was happening.
That, I guess, is why the OP brings in Ben Fountain, who unless I've missed something said not a word about power downs. And Rodriguez, who based on his CNN, NIST and 9/11 Commission interviews didn't appear to find anything too suspicious about events until he realised he could be a truther hero.
Still, well done truthers, you've got some confirmation that a floor or two of one tower had its power cut for maybe 36 hours. So, now what?