I've always been a fan of balancing the suspension of disbelief and a little bit of physics. The suspension applies to the existence of powers and the fact the people have them and can use them. Peter being made of metal and generating/controlling electricity is the suspension. The little bit of physics applies to how that power affects the environment and the natural events that would occur according to that power. I entirely intend on making the usage as realistic as I can, to have these bolts of lightning and electrical discharges work as electricity regularly would.