01
Solar resource and geometry
Location influences available irradiation. Orientation and inclination change how the array receives it through the year.
02
Shading and layout
Obstructions can affect individual modules and system behaviour. A survey should assess the timing and extent of shade and the proposed electrical design.
03
System losses
Temperature, inverter conversion, wiring, mismatch, soiling, availability and degradation can all reduce delivered AC energy.