Unless you have a huge amount of hydroelectric power available. Loss during transfer of electricity is a problem, so runnin a carbon fiber production plant close to a hydroelectric dam makes sense. The same thing is done with aluminium plants here in Norway.
Only problem is that they are building lots of new transfer lines to export electricity now, as the price abroad is so high that it justifies the loss during transfer (which again raises prices for electricity here in Norway, both for the industry and regular people)..