> I don't understand why commercial solar isn't even bigger than it is - are they waiting for prices to come down, or what?
I think this is a really good question and I don't know the answer to it.
My not-very-well-informed opinion is that there are a confluence of factors involved:
* Infrastructure buildout, especially in the USA where the infrastructure projects take massive amounts of effort and the population is spread out over a large area of land, takes a lot of time, effort and money.
* The prices involved aren't as lucrative yet as they could be. When the price per MWh is 1/10 that of coal, then we'll see huge rollout (in my opinion).
* Adoption/rollout is happening but, in some places at least, there's government capture preventing widespread rollout/adoption (Pennsylvania?)
* Aging infrastructure prevents large scale energy injection at random points.
To the last point, here in New York state, I've heard one has to pay to first do a survey if the site where you want to build a solar array can actually inject that much more energy into the grid (at a cost of $10k+ or more) and even then, you're limited by what the aging energy infrastructure can support, capping the amount of energy available.
