Also they’re only the cheapest at the point of generation, you then need to transfer that energy where it’s needed, and when it’s needed (storage). Also manufac

Also they’re only the cheapest at the point of generation, you then need to transfer that energy where it’s needed, and when it’s needed (storage). Also manufacturing capacity for renewables infrastructure, vehicles, batteries, etc, etc, is constrained. And then there are products that can’t be substituted by renewables such as plastics, fertiliser, etc. So many factors. It can’t happen too soon, but it will take many decades.