Until we get solar panel construction and deconstruction to a place where they don’t cause pollution – we can’t 100% rejoice at the lower cost of solar panels until we can safely construct and dispose of them. They are too dangerous to dispose of in regular landfills, but that’s where they are ending up today.
Hey, I’m an engineer who works in wind energy. According to most financial firms that perform this analysis, the on-shore wind is and has been for quite some time the cheapest production of energy method we have by this metric. Solar is also dirt cheap.