5 Parameter single diode photovoltaic

Hi

I am looking to calculate the DC power output of a PV module (using the irradiance and temperature as inputs) and assuming a MPPT. I am trying to use the single diode 5 parameter model (including shunt and series resistance).

Can someone help me with the method for this?
I think it is something along the lines of differentiation of the I-V curve to solve for dP/dV???

Any help please 😀