I also want to stay off the electric grid . It would cost an additional ten thousand dollars to be hooked into it and I want to be independant from utilities. Would solar panels and batteries power lights and T.V , computer , washer dryer ect.
TV, lights and small appliances, yes. Washer, maybe. Dryer, not likely unless it's gas – consider a clothesline. Electric range or oven, no. Hot tub, no unless it's converted to a gas heater.
The raw panels are about $3-8 per watt. So for 6Kw figure about $18k for the panels. The charger/inverter and batteries, figure $2-3k more. Figure about $30k including the installation.
You might also consider a generator. The off-grid houses I've seen tend to have them, even if they have batteries too. Add $3k for that.
Do you have a creek? Consider small-scale hydro too.

