I'm not an expert, I've just heard enough times that an explosion that's not enclosed isn't very effective. My plucked-from-the-air guess is that with today's c

I'm not an expert, I've just heard enough times that an explosion that's not enclosed isn't very effective. My plucked-from-the-air guess is that with today's consumer drones, you couldn't fly enough explosive-by-weight anywhere that's vulnerable enough to do anything but superficial damage. With the metallic powder, while that stuff can fry a circuit-board, power substations have a ton more energy in them, and have much more durable hardware. They already have to be weatherproof in externally accessible areas - I can't see an explosion of metal powder doing any more damage than rain already does. IANAPSEOAE (I am not a power station employee or an electrician), though.