Now let's figure out what you will need to attack the problem. I'm making up this example but here goes, I'm guessing I will need 200kWh of energy a month (We scrimped and conserved and our electricity bill is CHEAP! oops, make that low.). That is about 6.6kWh/day. We find we get about 5 hours of sun per day so we need 6.6/5 kW of panel. We will use 1.3kW of panel ....

Now we need storage ... I'll guess again and guess we need about 10kW of storage. If we use 1/2 of our battery capacity so the batteries will last more than a month ... and we use a 48V system we need 10000/48 or about 200AH (slightly more) of drain-down so we need a 400AH X 48V battery bank. This works out to 12  T105 batteries or so.

Eventually we will want a 48V system ... but we could start with a some panels and a 12V inverter ... then add panels and a tracking system ... then go to an MPPT charger ... gradually working to our goal and keeping expenses to a managable point.

You will need to decide if you want to deal with 'grid-tie sell-back'. In a good month you will be making (at $0.10kWh) $20 worth of power. It takes an ~$2000 inverter and, where I live a separate meter, at $18 a month, to sell back the power. As one would be using over 1/2 the power, at a minimum each month, best bet is I would only loose $8-15 a month going grid-tie.

BUT.... it is your project and you get to research and figure a lot of this out yourself...

Oh, in my guess system I spent $5000 on panels, built a $1000 tracker myself, bought $900 worth of batteries, bought a $600 MPPT controller and spent at least $1000 on a good inverter ..($8,500+)... all to save $20 a month.... I guess I am not too good at math if I think I am saving money.