Installing solar power systems in Parramatta is a good idea, because it is such a huge expanse of relatively flat coastal land on the east coast of Australia. Let's take a moment to appreciate what this means from a scientific point of view.
Solar panels need light to work. The east coast of Australia, especially the section along the coast of New South Wales, has an abundance of sunshine, even during the winter months.
Another factor, and not one everybody knows about, is that solar panels don't like being too hot. This is why the coastal location of Parramatta is helpful, because there is a cooling effect of wind moving over the sea, so the air in this region will not reach the extreme temperatures of areas further inland.
As a result, solar panels in Parramatta can be expected to work with better efficiency and fewer faults. Of course, the main reasons to consider solar are the cost savings, environmental benefits, and better convenience that solar power offers, but it's good to know you're living in a location that is situated to get the best out of the system you buy.