The cost of solar panels is plummeting, and this will flood the power grid with cheap electricity. But that’s just Act 1. We won’t stop building solar at the limits of the grid - we’ll build a lot more.
This post explains why we'll keep building more,
As long as we find a way to make use of the excess electricity produced, yes. Today we don’t have enough intermittent energy users. For storage, or otherwise.
There are initiatives calling for/demanding an expanded hydrogen infrastructure, for instance, so that could be one thing. I believe Germany is the leading country of such initiatives.
Yes, it’s a rocky road but it looks like it’s going forward IMO!