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,
From the calculations I’ve seen in recent scientific reports, that doesn’t seem to be the case, barring major economic changes on a global level.
Even the cheapest grid scale storage solutions are an order of magnitude more expensive than constructing more electrical generation capacity.
Particularly closed cycle fossil gas thermal plants have a massive advantage in markets where variable renewable electricity generation (wind, solar…) achieve high degrees of market penetration due to the volatility they cause in the grid.
Hydro, transmission and nuclear are currently the most accessible non-fossil options to counteract the disadvantages of solar & wind.