\[PG_PVg(s_ag)=N_PVmod*FF*V_g*I_g(9)\]
Here Npvmod is the sum of the number of Pv modules used for a Pv array. The current-voltage characteristic of the Pv module can be determined for a specific radiation level and ambient temperature T_A (℃) using the following equations \cite{l2010,Lappalainen_2017}.