Hehe, yep, my 9th level Sorceress also uses Empower Spell quite a lot.
 Ray of Enfeeblement, False Life, Scorching Ray, Fireball (of course, if you ever find a metamagic rod, it is one with a feat you already have - oh well, at least I 
can empower fireballs now, so I shouldn't complain too much 

).
Anyways, even if you are not an Incantatrix/Incantater, Empower Spell is mighty useful, starting at level 5 (wizard). And there are some great necromantic spells of low levels to use it with, which makes it especially useful in your case, I'd say, tho you'll probably never get the same mileage out of that feat as a sorcerer.
 
 Bye
 Thanee