The BIGGEST problem with clean energy

Let's be honest here. None of those solutions is gonna solve the problem. non of them is scalable enough. Some of them are even a joke 50% efficiency just on the storage solution is insane. We have the proper zero emission energy solution already but we are not developing it. It is called Nuclear Power and especially smaller fast breeder reactors like Molten Salt Thorium reactors.    I don't like the idea of the grid becoming overwhelmed with Solar. A Volcanic winter will end us all in matter of weeks if we go this route.