Hey guys. I just wanted to share this simple little setup I have. I have a 2400W Inverter charger with 2 gel batteries in series at 250aH each. I have 600W of panels yet my system can power about 450W without battery or grid from this inverter with good sunlight. If I had more panels I could power close to 2000W using only the sun. Love it. Here's a link to check it out if you like.
Some companies make those systems and sell them. It is a big secrete what is in those boxes and some will seal those mystery boxes. Basically what it is is a solar panel, a charge controller and I would combine it with a capacitor (which will act almost like a very small battery) , a voltage sensitive switch and maybe a DC to DC converter and a inverter to make 120Volt ac. The load has to be less than the panel can produce. A little shade or clouds will turn the inverter off via voltage sensitive switch. This way the inverter will not go into a fault mode and it does not have to be reset. After the cloud or shade passes, the inverter will turn on again by itself and is ready to be used again. A capacitor in place of a battery is needed in my eyes so the charge controller is keeping the right voltage for the inverter input. Also you may need to hook up parallel to the capacitor a DC to dc converter that gets the power from the solar panel.