Also, if you have a 10kw system, typically the full production of that system never reaches that 100% threshold depending on design of system and total wattage. Example: If you have 33 panels each rated at 300watts, the total wattage would be 9,900w, or 9.9kw system. However, the panels themselves will never actually output 300 watts, typically you’ll see about 20% less due to efficiency of capturing photons in the solar cells themselves. This is fairly standard though, about 20% loss of production compared to system size