Yeah could be. Could also be Arizona is more suited to above-ground utilities. Buried utilities have a much higher initial cost due to the work involved in burying them. They also have downsides such as people digging into them cause they didn't call to have the utilities marked and such. Plus more expensive to replace since they are buried.too bad, I never thought of that. not much electric underground around here, too much rock, I guess.
It looks a lot nicer to not have utility poles and lines running everywhere though.
But the primary reason for burying, as I understand, is actually because the total lifetime cost can be less. With above ground utilities you have to trim trees on a regular basis. Storms can drop trees and branches on the lines, taking them out. And in colder places, ice storms are another one that takes lines out.
I know Arizona doesn't have ice storm problems, but I'm guessing they also don't have nearly the amount of severe thunderstorms we get here in the midwest either. "Damaging winds in excess of 60 MPH" is a common statement when listening to NOAA weather radio alerts around here in the spring/summer. It's a common sight to have large branches and even trees down after the big storms.
I love watching thunderstorms though. And I've always wanted to see a tornado with my own eyes. Maybe one of these days...