This is simple IF YOU LIVE IN YOUR TT NOW
Look at your electric bill how many kw hours did you use last month ?
Now convert that to battery use amp hrs,
You need devide that by 30 days , then double the result that's the minimum amount of batteries you need
Then figure how much solar is going to be needed to produce that power
Everyday
If you can't install that much solar you need to find the balance between generator and solar
We have 675 amp Hrs of AGM batteries, weighing 505 pounds
Our overnight use is approx 130 amp hrs, 1625 watt hours , that's overnight daily use approx 2kw hrs, we have 649 watts of solar, and I run the generator everyday
Just so I don't drag the batteries down to the 50% level except in unsettled circumstance