Comment by richardc323

You are reading that very narrowly. The paragraph is simply pointing out that solar power is cheaper when built out in a centralised way because of: * economies of scale for construction and maintenance * higher utilisation. They don't spell it out exactly, but it is pretty clear fro m the context that, "lots of self-generated power will ultimately be wasted", is eluding to a wider geographic area needing more panels to satisfy all demand when each house has an independent system, rather than being grid tied.