*Proposed Sizing Strategy*

The following steps correspond to the ESS sizing strategy applied to enable harnessing the PV plant clipped power.

1. PV modeling selection: Select a model to estimate clipped power. For this purpose, an analytical model depending on irradiance, module temperature and PV module parameters was chosen. The model predicts the MPP, which is later limited (clipped) at the rating of the converter (clipping level) and compared to the DC power measurements from the PV plant. Four error metrics and additional features were considered to show the accuracy of the model.

