TIBERIUM SUN!!! Umm.... I'm taking a guess at this Cam but is it like when the firewall is about to run out you just click to make it stop and then press again and it'll restart??? I have no clue!
The answer to the last was that if you turned on your firestorm wall, or whatever it was called, and then you got low power (sell plants, or get them destroyed) the firestorm would stay on forever...