Energy Output difference

[pvsimulator]

Hi

I am doing a simulation on PV farm output

I realise that the energy output for using polycrystalline module will be higher than that of monocrystalline module. In the software, i tested with 13048 of LG230 P1C-G2 Si- Poly with modules and the simulation yield 3154kWh whereas for 11664 LG 230 M1-G2 and the simulation yield 3152 kWh, next I simulate with 37170 module of FS-280 Thin film module and found out that the yield was 3615kWh. Why is the plant yield for thin film module higher than the polycrstalline and mono crystalline despite it having the lowest efficiency at modular and cell level? Next is why is the plant yield for polycrstalline higher abeit with small differences than monocrystalline despite it having lower efficiency at modular and cell level? Your help will be greatly appreciated

[André Mermoud]

Sorry, I don't understand your numbers.

For the yield, you are probably speaking of Specific production, expressed in [kWh/kWp]. But such a high productivity is completely out of standards.

However the Specific production doesn't depend on the Efficiency of the modules at STC.

When you install 1000 kWp of modules, the production will be related to the Nominal power, not the efficiency.

With lower efficiency, you will have a greater area, but still 1000 kWp installed ...

Now the differences in yield may arise due to the temperature behaviour and low-light sensitivities of the modules.

And this is dependent on specific model parameters (namely Rserie), which are not always known with accuracy.

See our FAQ What explains the difference in Yield between different modules?