Solar power for new build off-grid house

[kwhincop]

Solar Tiles

hi again,
these are 2 of the solar tiles I was looking at; anyone heard whether they are any good?

http://www.pvsolar.com.au/

http://www.monier.com.au/News/Show_3.aspx

[kwhincop]

hi there,
I am very new to building and solar research, so was hoping you guys might be able to help me out; we are about to build a 2 bedroom house in a small, somewhat isolated town in QLD. The house will be off the grid and we want it to be as sustainable as possible.

I really like the idea of solar tiles i.e. where the solar panels/tiles are used instead of roof tiles (and not as an add-on to an existing roof); it just seems like a sensible way to go when you are building from scratch. Are these types of systems available/reliable in Aus? I have seen references to them on google, but wasn't sure how successful the technology is in real life i.e how much is "marketing speak". Does the roofing cost end up being any cheaper (than an add-on system) because you have forgone the need for standard tiles in sections of the roof?

Any other comments that might help with our plans would be gratefully received!