It's really just a matter of money. Wind and solar are enough to produce energy; add in nuclear if you like. We also know how to make Hydrogen and Methane to store large amounts of energy over long time periods, so storage is not a technical problem either. It's just very expensive right now. WW2 was a bigger manufacturing challenge that what we would need to do to become carbon neutral. There are several studies with roadmaps to net zero emissions published. They tend to be very long and technical, so they don't get much media attention.