> However, much of this proposed capacity will not ultimately be built. Among a subset of queues for which data are available, only 23% of the projects seeking connection from 2000 to 2016 have subsequently been built. Completion percentages appear to be declining, and are even lower for wind and solar than other resources.
Projects not being built indicate the massive success of falling costs. Projects that fail to reduce cost enough to compete get cancelled, and the capital goes to others instead.