Label Inspection: Check the manufacturer's label on the panel's backside. Look for "W" or "Wp" (Watt-peak) values under Standard Test Conditions (STC).
With this data, the calculator will calculate the length of the roof edge and the number of rows of panels in two arrangements: horizontal and vertical.
Rectangular battery shape: Represents the cell body. Lightning bolt or spark icon: Indicates stored electrical energy or charging capability. Warning elements: May include crossed-out trash bins, flammable icons, or handling precautions.