“We have already reached it’s min cost becuase a source that only works 8-10 hours a day has to be augmented with 24 hr sources. The math doesn’t allow the delivered price to go lower”
The solution to that is storage. Tesla is already starting to address that with its Powerwall batteries. Others are too.
Cost and capacity are still a big issue but it will happen sooner or later.
No.
Storage is not a solution to this. Though it can have a marginal or specific effect.
Here’s an article that does pretty well at describing the situation (I’ve seen better though):
http://thebreakthrough.org/index.php/voices/energetics/a-look-at-wind-and-solar-part-2
Of course there could, one day in the future, be an amazing advance in storage, or solar production, or in something else.