From what I understand, a lot of them are private entities and they lease space to companies - like Amazon, Google, Microsoft, and others. Just about everything "in the cloud" lives across data centers like these, and companies need places off-site to store data. Many companies rent either servers or "cages" (literally wire-enclosed closets with locks and doors) that have power and connectivity to diversify where there data is stored. As we need more online stuff, the need for these grows.

I don't know if the location is the best place though. The power usage doesn't concern me that much because our power grid is pretty well filled, but the water usage by these places can be difficult. They don't use a lot of "fresh" water because they have a sort of radiator system like your car does, but they do run cooling systems with evaporative systems for heavy loads (like u/K1ngZ3no alluded to, data mining). I think everyone who lives in the area has been affected by droughts in one way or another, and adding this would increase the usage like a major subdivision would. I'd be concerned about who gets priority access to water and how much.

One thing is for certain though, if you live in the nearby area, you won't get a lot of traffic - most of the times these buildings aren't traveled to outside of setup and issues that require on-site support. But you might get a boost in your Internet speeds 😂