The more usage of intermittent renewables increases the more your electricity bill is dominated by fixed costs. You still need the grid, which is only growing more expensive.
For places not already on the grid, using batteries instead of paying for a new grid connection is close enough to be a question worth asking, though from what I've seen not a definite "yes" or "no" in general.
For places not already on the grid, using batteries instead of paying for a new grid connection is close enough to be a question worth asking, though from what I've seen not a definite "yes" or "no" in general.