The most important thing to consider is the term.  In the short term, solar is too expensive to be an alternative.  In the long term, it can eventually pay off.

 

I would look for the most efficient and durable panels that are available, and also look for the best storage solution.  The power provided by solar is a DC voltage and needs to be stored in the form of batteries.  Lithium is probably the best technology as far as batteries, but it's not going to be cheap and charge controllers can be a bit more expensive.  Also, the downside of lithium batteries is that heat is deadly to them, so they need to be in a temperature controlled environment.

 

You also want the most efficient inverter that you can get that is capable of providing the needed power.  It's job is to change the DC power stored in the batteries to AC needed to run your home.

 

Finally, you would need a battery monitoring system that can switch your home's power to an alternative, or provide an extra means to charge your batteries.  Typically it would switch power to your utility company, but if you want to be truly "off the grid" it can be some sort of generator.

 

Understand that it's almost impossible to run a "typical home" on nothing but solar power.  Although it's feasible, the infrastructure required would cost way too much.

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