Beyond just panels or the generation piece of the equation, there are many opportunities in the space surrounding solar - from racking and installation solutions, to inverters, to cooling to storage.

Couple interesting articles lately discuss the massive amounts of water the utility scale guys are applying to pump in the Mojave desert here in California:

“The Genesis Solar Energy Project would consume an estimated 536 million gallons of water a year, while the Mojave Solar Project would pump 705 million gallons annually for power-plant cooling, according to applications filed with the California Energy Commission.”  - full article.

The utility scale solar thermal guys want to use wet cooling because it’s more efficient than dry cooling.  Given the drought conditions here in CA (and the fact the desert is the best location for solar) along with dropping panel prices, it’s possible that the PV solutions may sooner or later give solar thermal a run for their money on these projects.

Also seems that somewhere some startup can figure out some creative process to create steam or cool these systems more economically (along with cleaning the mirrors/troughs) etc.