mystique
@kieffer5101 and @Oneye are correct that energy storage is not explosive, while ammo and especially missile storage are. Also, reactors are extremely explosive and dangerous to put near weapons, while ammo factories are much less deadly. As a result, ammo storage is seldom useful and missile storage is basically never useful, while energy storage has niche uses.
I would strongly, strongly advise you to listen more to some of the guides and to the other players posting here. There are plenty of resources around to help all players learn.
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mystique At all. @Oneye 's guide is very useful, but i have personally easily destroyed him in multiplayer with properly placed storages.
I haven't played against Oneye in a while, but he's definitely a strong ship builder. It seems unlikely that you could "easily destroy" him with ships of similar quality to the one you posted above.