How Much Electricity Will It Produce?

Considering optimal conditions (i.e. facing true south, array set at a 30 degree angle, and no shading) a 4,680 Watt, 24 Panel all made in Washington Photovoltaic (PV) system will produce around 6,300 killowatt hours (kWh) per year in Yakima.  From experience, I have noticed that these systems have been out preforming their predicted outputs. 6,300 kWh is about 56% of the electricity that the average american household uses per year.

For a month by month energy production report, see the following link.

Month by Month Energy Production