One problem I see with "solar power" discussions is what I tend to think of as the "Russian syndrome." That is, the issue is discussed in terms of central planning, and massive arrays. This is, I believe, an incorrect application of solar.
Now, I have installed a dozen or so 'solar power' systems that were neither large, nor tied into the grid. These systems have worked well.
The application? Powering bus shelter lights and traffic signs. In these applications, they work well. The role of solar may be to maintain, rather than power. I see them powering small, stand-alone loads, rather than as part of a power distribution system.
