The obstacles include both a shortage of steam turbines and water, a lack of transmission lines, and how to keep all that desert dust off the mirrors. Interesting.
Then of course there’s NIMBYs who want clean, renewable power as long as none of it is anyplace they can see it. Sure, some projects, like coal, are evil need to be stopped, but many other types of power are clean and not intrusive. They need to be supported.