The Effect of Income Distribution on Solar PV Installation by Zip Code

I use income, demographic, and solar PV installation data to test whether wealth inequality has an effect on Solar PV usage within the State of Arizona. I find that there is no statistically significant evidence that a higher proportion of low income households within a given zip code results in a decreased installation rate of solar PV. Rather, as the proportion of individuals earning between $50,000-75,000 dollars a year or $100,000-$200,000 dollars per year rises, the number of solar PV installations increase. Finally, I find there is a positive correlation between the median age of a zip code and solar PV installations.