I don’t know, but the Ivanpah solar power station near Primm NV, which is a set of three molten salt towers is reportedly getting decommissioned, removed, and replaced with PV panels. Word is PV technology had improved in efficiency and stopped in cost enough that the whole molten salt thing is no longer economically viable, at least in comparison.

Oh, absolutely. It’s very cool technology! Molten salt is corrosive as fuck, but that just kinda makes molten salt solar towers even more awesome.