Buyer Beware. Before you purchase solar Google the company. You will be supriseed what you find. I wish I would have done so and I wouldn't be out over $7000.00.
Read this
If this doesn't make you run than best of luck too you.
And this one:
http://www.abc.net.au/news/2013-02-26/public-warning-on-unleash-solar/4541034
Happy reading.