ALL - 100% - “Green Energy”/”Climate Change” mandates are 100% pure demands with 0% feasible plans in them. They are no different than a legal mandate that says “all motor vehicles WILL get 100 miles per gallon without a scintilla of feasible ideas of how that’s possible. The political organizers believe themselves to be economic magicians who by merely clapping their hands they can miraculously make something happen.
I think another element of their thinking is the idea, which I think comes from left-wing intellectuals of the early 20th century, that "demand creates supply." These people looked at the role of advertising in creating the consumer economy of the last 150 years; they concluded that the public could be herded toward anything with advertising pressure. Of course, this got them thinking that the public could be herded toward accepting the goals of the left.