When we moved to Las Vegas from Chicago, we noticed a lot of differences. One of the largest differences was the fact that the sun shines in Las Vegas almost all the time. In the Midwest, with the humidity, it can be gray a lot of the time. Especially in the winter. We lived in buildings when we were in Chicago, so we didn't have the opportunity to even entertain installing solar. When we remodeled our home in Nevada, we thought about it. I did the math, and it didn't pay. It was a ten to fif...