unfortunately, unless i had a MASSIVE system, i can never really be off grid. i have some hobbies that require up to 10kW/h at close to 50 amps! also, i have an electric stove and well pump, which are pretty heavy loads.
my plan is to get my 4' test mill up, see what i get, then if all goes well, make a 10'. i would have a separate breaker box w/ a transfer switch (like would be used for standby generator) and run all my light duty loads...lighting, tv, computer. the rest would remain on grid and the transfer switch would allow me to go back to full grid if needed. at least it works out in my mind and would maybe take $5 - $10 a month off of my bill.
so no matter what...i'll always be a slave to the grids $16 fee for being hooked up.