You're assuming no one has thought of trying alternatives. If there were ones that worked then we'd be doing them already. Specifically:
How about we build nitrogen fixation
You're combining two industries with two different economics. That works well at a point and then very quickly craps itself leaving both industries nonviable. Do you run the nitrogen plant to suit the power industry? Good luck getting funding to take on that economic risk. Do you run the plant to run flat-out? Good luck getting wide spread adoption without dramatically shifting the supply/demand curve and making the result nonviable.
How about we build a smart grid, which incorporates electric vehicles on home charging systems?
The current problem with electric vehicles is range anxiety. Not having the vehicle charging at all times will not help adoption. Also there aren't that many electric vehicles to provide any meaningful storage capacity.
How about we take recycled batteries from aging electric vehicles
The economics of attaching together a wide variety of batteries in a common plant like that are against you. If the world was standardised on one type of battery, maybe. But batteries die exponentially only at the end of their life. A battery that is at 80% capacity after 4 years does not have a meaningful life left in it for any kind of storage system.
How about we mount the solar panels with a gap above the rooftops
We already do, next question.
How about we look for solutions
There's whole industries dedicated to doing just what you propose.