I am renewing the electirc system of my apartment, and with it I am redoing all the lighting system.

I thought there was some way to use LEDs instead of regular bulbs or alogen lights, but I can't find anything significant on the web. It seems that LEDs are only used for bookshelves or something like that.

Does anybody know anything about this? Is it possible to get rid of regular bulbs as main light source, and replace them with LED-based systems?