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,
But they are not home at peak solar.
But generally they would be parked, right? At the office, or transport hubs? Maybe that’s where the batteries need to be installed. Take the responsibility off private citizens and install it where there’s going to be a mass of cars parked.