We recently purchased an off grid power system from Rainbow Power [ 16 panels 4 lithium batteries and all associated hardware ] and found the whole experience refreshingly free of the usual stress when buying a major item over the phone. All questions answered, all phone calls returned and sound advice given, and an assurance of free technical advice into the future. The components are all top quality and fully compatible. These guys know their stuff and I would recommend them. Ask for Andrew when making enquiries. 10 stars.
John P, NSW Mid North Coast

Approximate cost: $30000

In 2007 this company sourced Kyocera 130W Solar D-Blue Triple Bus Bar Panels; a Regulator with LCD display; and Trojan deep cycle batteries and supplied them to me for use in a stand alone system. Over a number of years, before solar power became fashionable, I have had several versions of solar panel. The ones I have now continue to give good service despite being exposed to some cataclysmic weather. It has been a case of put them up and forget. All my power needs have been met. Occasionally I remember to wash them when it is dusty.
Although the road freight company with which Rainbow arranged delivery was a bit off, leaving my order at the local garage/petrol station instead of the given address, the packing was satisfactory -no breakages- and everything turned up promptly. (Bearing in mind this was six years ago, my experience isn't indicative of how things are now). Small packages will be posted.
Rainbow Power Company has been in the alternative energy field a very long time and the information available from them is thorough, if a bit mind numbing sometimes if you are not technically inclined. The web site is comprehensive and very easy to find your way around. I wish more companies were as clear.
In the future when I intend to extend and modify my system I shall return to Rainbow for their excellent service.