From my quick skim of the site, it was unclear to me the timing of the queue. Do projects sit in there for 90 days or three years before approval? Once approve

From my quick skim of the site, it was unclear to me the timing of the queue. Do projects sit in there for 90 days or three years before approval? Once approved, the project still has to be built, correct? Is there a resource that lists plants which are actively expanding? That seems like a more useful short term metric to understand new capacity, because items in the queue may never be constructed.