Will it though? It seems like the "free market" and political maneuvers might be able to keep the energy costs elevated, similar to what OPEC is currently doing for oil.
It seems to me that monopolising solar will be a lot harder than monopolising oil, because of the substantially lower overhead and resource competition.
Not really. The most important part is already monopolized: transport. Then we have storage, which is not monopolized yet because there's very little of it. My bet is that the transport monopoly will take over storage as well.