Understanding the core criteria
During ratio selection, the following factors need to be taken into consideration:
• Module temperature
• Orientation of the PV panel
• Tilt degree of the PV panel
For example, a plant sited in Central Europe that generates power using high-efficiency inverters should not exceed a layout factor of 1.12 (kWp/kWac), as given by Dr Bruno Burger, Fraunhofer ISE. However, if the orientation and inclination of the modules is not optimal, values can deviate.