I know they generate a moderate fraction now, that's the point of my post. I think they are backing themselves into a corner. The problems to date include very

I know they generate a moderate fraction now, that's the point of my post. I think they are backing themselves into a corner. The problems to date include very high energy prices. Even larger challenges await; these will grow as renewables they become a larger fraction of total output. Renewable variability isn't a problem when they are a small fraction, but a very large one when they are a large percentage. These are unsolved problems. Land use is also an issue.