I use a 22 Qt. Tramontina pot with laminated bottom to make 4 gal. batches.
My stove is an old GE with a 2000 Watt coil element. Some may laugh, but it works.
I would be concerned about the weight on a glass top, but it might be able to handle a 2.5 gal. batch, or a partial boil.
There's only one way to find out. Good Luck!