First of all thanks to all who have shown such great interest in Solar Energy. It is one of the most ignored subjects these days here in sunny South Africa. For various reasons. Not knowing enough about it is only one of them.
In this update I will provide some actual operating data, taken from my own system, which is a 6kW installation using a 8kVA grid tied inverter, a 1660 Ah 48V battery bank, 2 x 100A MPPT charge controllers and 24 x 250W PV panels. The entire system can be monitored in real-time via a communications link (which can be installed as an option), from anywhere via a standard web browser.
The first graph shows beautifully the power produced by the sun over a 24 hour period. That particular graph is from April 3, 2014 which seems to have been a particularly nice day as is shows a nice clean graph.