Any structure has a roof that can be made to work with a solar Photovoltaic system. South is always best but east and west work fine. It is just the north face we do not use without adjusting the angle to the sun. For more info Since Colorado is in the northern hemisphere and not at the equator, the sun never tracks from due east straight overhead to set in the true west. The sun tracts a southerly arc during every season, more southerly in the winter than the summer, but still southerly. Therefore, we never install a photovoltaic system facing north. In Colorado the best direction to face solar panels is always going to be south. However, that does not mean that East and West are not suitable, quite the contrary. East is the second-best orientation as it gets very direct sun light from sun-up until early afternoon and West gets direct sun light from midday till sundown. The only reason east is better than west is that in the afternoon we often get thunderstorm producing cloud cover that partially blocks some of the sun’s rays from reaching the photovoltaic panel.

Is south overrated?

South may be best but way overrated. Think of it this way, if it would take 20 solar panels on a south facing roof to meet 100% of your needs but all you have is an east and/or west roof it may then require 22 panels to meet your goal, but do you really care? The install price difference between 20 or 22 panels is negligible and if you can fit the 22 panels on your roof you win, case closed.