WHAT SIZE SYSTEM DO I NEED?

*26/09/2011 All estimates are calculated using SolarGreen’s proprietary design tool based on 5 Hours of daily solar insolation, 91 Days of billing on Tariff 11 =$0.2089 and a net feed-in of 44c per kwh with 70% of your weekday and 50% of your weekend power exported back to the grid.  Allowing for the loss of efficiency from a series of environmental conditions with a 0° North roof installation and a 25° pitch roof.  The system has been de-rated to an EverSolar inverter of 97.6% efficiency, and the solar power module efficiency of the Suntech STP190S-24AD panels.  Not all inverters and Solar panels perform equally, our tests show that in many cases you may require more panels to gain the same amount of power returned to the grid as that of Suntech.