I show a demo model and I'm trying to explain how you can do very accurate and cheap solar tracking. The key to this is understanding "equatorial mount". Equatorial mount greatly simplifies tracking the sun. This could help you harvest a lot more electricity from your solar panels, especially in higher latitudes north and south in summer. It should also help significantly in tropical areas throughout the year. Most commercial solar farms do not track the sun as accurately as this. Not even close.