How do I get the most out of my solar panels? “Point them to the sun” would be the obvious answer. But that is not as simple as it sounds because the sun moves around. If you want to get the most out of your solar panels mount them on a solar tracking system. You can increase the energy harvest by up to 20% if you use a 1-axis tracking system. 2-axis systems can increase total energy harvest by up to 30%!
But even if you have a fixed installation you can optimize the energy output:
Solar panels should always face true south if you are in the northern hemisphere, or true north if you are in the southern hemisphere
MACS Lab have a very detailed webpage about how to tilt solar panels. You can never beat the 2-axis tracker but even having the right tilt angle will optimize your energy output to at least 71%. Depending on what latitude you are living there are different tilt angles recommended.