I do not know how to calculate how many panels and batteries I will need to sustain the 15.9 Kwh needed each day. I need some help from the group for that please.
Oooh, your goal is take your whole house off the electric meter?
Some suggestions, from a guy who has been living off grid for a year.
You should be able to do better than 15.9 Kw/day. Our family of four uses between 3 and 5 Kw/day because we ruthlessly practice conservation.
If I were you, I wouldn't even consider expanding that system to run your whole house. Fist of all, the batteries are wrong for a large system. You want true deep cycle six volt batteries like the ones they use in golf carts, not 12V marine starting batteries like I see in that picture. Also, the inverter isn't big enough, and the solar panels you currently have won't likely match the kind of panels you'll need to make the kind of power you are talking about.
Here's some quick figuring. If you do some major conservation and get your electric diet down to 10KW day, you'll need approximately 2000 watts of solar panels. Street price on large polycrystalline modules lately is about $4/watt. So there's $8000 in solar panels alone. You'll need a high quality, high capacity inverter, it will cost over $1500, you'll need a large, high quality charge controller or two, maybe $500. If you don't grid tie, you'll need at lest $500 in batteries, probably more like $1000.
That's a pretty neat system you built there. I really think you should think twice about expanding it much though. Those components you got are just not up to the task of powering a whole house to the tune of 15KW/day.
