So, everyone knew this information already? I did not say it was good or bad, just an "interesting tidbit", meaning trivia. Your super defensive response strikes me as being more out of place than my mention of a fact that some might not know.
And as far as projections, NOOR1 was projected to complete for much less than $3.9.
And you must know that even with molten-salt storage, the plant does not produce at its peak all day. In fact, it produces at peak only for a few hours a day, and ramps down in the evening. On a winter day it may not even reach peak, and of course cloudy days as well. So an optimistic $9B for 580MW peak does not sound so good at all to me.