User blog comment:Deafro/Theory on Dust Manufacturing/@comment-4773581-20140112153919/@comment-16763585-20140112172617

The lightning thing was just a point to say that even without the technology people can still gain access to electricity or other energy, however dangerous. The same electricity could be obtained by using a acid with copper, though it would be far less dramatic. The problem really is that your worried about super saturation of the substance, that once it is full to bursting it will explode, and that is a valid concern. If it reaches a critical point where it is full of energy, then it shouldn't accept anymore energy. Now granted the excess needs a place to vent out to keep from building pressure, but by the time the Dust isn't collecting energy, it shouldn't be accepting forign energy either, and thus can be exposed to the elements. Even something like a steam kettle would do the trick of letting the excess energy escape, while keeping the system closed to the outside elements.