Okay so this is short and simple, what this does is add 3 types of new energy ammo that will more often than not ignite the enemy.
These new ammo types are in SEC, ECP, and MFC variance so any energy weapon other than the Alien weapons can use them.
They have increased damage, increased DT reduction, increased weapon condition damage, and will ignite the target.
They have been added to all relevant lists such as merchants and the pyro perk, as always it may take some in game days for the them to show up.
Though these will work with ANY energy weapon save for the alien ones and the flamers (heat's energy after all) I suggest only
using them with laser weapons since I think plasma would sooner melt someone than ignite them, same for the gauss rifle...
The thinking here is that the ammo has such a high charge that it can ignite flesh, and wear-down your weapons faster.
Kind of lore friendly if you think about it, I mean hell there's freaking plasma weapons and aliens in this setting after all.

Edit: Nearly forgot to mention that there is a little "starter pack" in Doc M's living room, on a small shelf.
There's a normal laser pistol, a full clip worth of the new ammo for it, and an energy weapons skill book.