Anyway it does make sense for AZ to be big into solar (as opposed to someplace like Toledo, OH) for two obvious reasons:

First, you reduce costs of transport to the region of the highest demand/use.

Second, you can troubleshoot and test new innovations in real-world conditions. For example, at one time it was observed that the desert heat can cause optical coatings to peel off from the Al panels of solar thermal systems. That’s a phenomenon that you probably don’t observe if you do your field tests in the pastureland of the recovered Great Black Swamp.

However, instead of offering incentives to particular industries, why not just keep taxes and regulatory requirements low? Then many industries will come to your area, including those based on your region’s inherent advantages (such as solar industry in AZ) providing a better opportunity to succeed.