Solar Electric Producing Kilowatts

I decided this was the year to install a solar electric system to help produce the power I love to use. The system includes 16 Sunpower Photovoltaic panels installed on the roof. The DC power produced is fed through cables the the inverter in the garage. The inverter changed the DC to AC and feeds it directly into the breaker box. In the past two weeks, the highest kWh produced in one day is 19.5 and the lowest on a very cloudy day was 5.5. I hope that this system will produce a little more than a third of our electric needs - but that remains to be seen.