There's quite a lot of experimental electronic music around in Australia. Given it's such a niche genre compared to a lot of mainstream music. You just need to know where to look for it.
The Sound Lab radio show hosted by Fenella Kernebone on Triple J is a great place to find out what IDM artists are doing locally. Also the Liquid Architecture festivals that occur every year in the major cities is probably the number one place to go see and hear whats happening in the experimental music scene. Hope this helps!