LID - Light induced degradation

What this step does

The power crystalline silicon modules lose in their first hours of sunlight, taken as a flat fraction of the array energy after the quality row.

The math

$$E_{after} = E_{before} - L_{lid},\qquad L_{lid} = f_{lid}\,E_{before} \tag{1}$$

where

Symbol	Meaning	Unit
$E_{before}$	the running total of the loss diagram before this row	kWh/kWp
$E_{after}$	the running total after this row	kWh/kWp
$L_{lid}$	the row as a loss	kWh/kWp
$f_{lid}$	the light-induced degradation input, a fraction	—

Reading the number

A loss, negative. 0.5 to 2 % for p-type crystalline silicon and close to 0 for n-type modules, on utility and rooftop systems alike. The row follows the input alone.

API

loss.lid

Symbols follow the symbol registry.