The more research you do into renewable resources, the more you realize that matching demand for power to the renewable supply is the trickiest part. According to this study, for people that are away at work in the middle of the day, it makes more sense to point solar panels south-west instead of directly south. Makes sense right? Well, yes and no. If you aren’t attached to the grid, or your power company doesn’t allow net-metering and you work all day then yes, this makes perfect sense, why not make the power when you’re using it. If you have net-metering from your power company, why not produce the most power and use the grid as your battery; then due south is still the way to go.