The main character is seemingly a magical dude. He, I think the character was a he, and has no magic of his own at an academy of magic. Turns out he's a conduit. If he touches another magic user he can use and amplify their power and even combine multiple people's magic into one if they are all touching. I'm pretty sure this was a series.
I read this somewhere between 2000 and 2010, but probably closer to 2000, I believe. It is a kids book. For some reason I want to say the kid was albino and/or had glasses... but there's no real remembrance. I don't remember if they used witch, wizard, sorcerer, or some other word for a magic user.