The inherent property of silicon generally means the higher the temperature, the lower the efficiency. With monocrystalline PERC cells having a temperature coefficient of -0.4% -0.5%/ ℃, N-type TOPCon cells and modules differentiate themselves by having one below -0.3 %/ ℃. This means that, whereas a PERC panel loses half of one percent of its power with each degree of temperature increase, an N-type TOPCon panel will lose only 0.3% or less.