The cost of intermittent power sources includes the dirty fossil fuel peaker plants built and ran to back them. Think of them as batteries.
Intermittent power sources more or less are financial engineering parasites to the grid at this point. It could be fixed but no one has the political will to do so. Eventually you run out of other people’s power and the chickens come home to roost.
The most obvious investment I’ve made in the past 15 years was natural gas. Until chemical battery storage catches up (doubtful) or there is a return to rationality in this space I expect the party to continue.
I hate it. I think solar and wind are great technologies that are currently horrifically misused by folks getting rich off the backs of regular people.