If you're talking about something like this
http://www.surlatable.com/product/539783.do, it's rated 1800 watts. If you normally have fuse troubles with things like hair dryers, your wiring may not support it.
I've cooked lots of stuff on induction burners and I think they are fantastic. They're sort of halfway between electric and gas burners in my experience. They respond very quickly to temperature settings (like gas, unlike electric), which can be good or bad depending on how you cook and your pans. There is no heating element in an induction unit. The pan becomes the heating unit. If your pan will hold a magnet, it'll work, but definitely consider heavy duty pans
There is also very little heating outside of the pan (like electric, unlike gas). Gas burners are sort of inefficient because some of the heat is deflected off the bottom of the pan, out around the sides, and it rises away unused to heat up your kitchen. Much less of that in an electric burner. Pretty much none of it in an induction burner. The only heat you feel is radiating from the pan itself.
If I had the $$$, I'd mod my stove with two gas and two induction burners. I still like gas because you can't char a pepper on an induction burner or toast a tortilla or warm a pita etc. And you definitely can't an induction burner to flame pan sauces, one of the more enjoyable cooking-with-fire activities in my kitchen.