Posted: 15/10/2014 at 20:37
If for producing Hot Water, I'd say it was well worth it in my experience.
If for Electricity........look long and hard at your contract. Unless you have some means of storing the electricity you produce, the unused power will be sold to the Grid for a lesser cost than you will have to pay to import the power you will use when your solars aren't producing. It seems to be a bit of a minefield particularly when you take your initial investment into account.
If you are a high energy user, it may be worth your while but it isn't cost effective for everyone. It also seems to be the thing that people are being led to believe that generating your own "electricity" is the answer to our prayers............very little is seriously promoted about helping people to actually cut their everyday power consumption.....that is what really matters IMO