This is my 5600 watt capable solar system that uses multiple 120v limiting inverters to provide my whole house with augmented power. We have noticed over the past year of it working that our electric bill is reduced by about 1/3. we generally use about 60 KWH per day!
build list:
20 upsolar 285w panels
2 eco worthy combiner boxes
2 midnight solar 250 solar charge controllers
2 40amp solid state relays
4 1000w 48v to 120 volt sun100gtil2 inveters
4 strings of sbs190f batteries
misc breakers and buss bars and wire as well as mc4 connectors