Are there any ROI studies regarding concentrators and tracking systems for solar cells (PV)?

Question

I'm considering installing an on-grid full solar array for our home and was wondering about ROI of solar concentrators and solar tracking systems as opposed to a solar array simply mounted to our home's roof.

Answer 1

I would recommend checking out http://www.greenandsave.com  there are over 50 ROI calculations for green home projects.

Answer 2

You might want to check out this website.

It will cost you a pretty penny to have one installed.  Make sure your home roof is designed for it.

Good luck.