Abstract: Based on the PLS-SEM structure, validation is required for each part of the model for the structural model, measurement model and overall model. This study’s objective is to outline the measurement and structural criteria required to develop the model. It also, presents a Robust Partial Least Squares-Path Modeling (RPLS-PM) via. Winsorization which includes the internal and external models. The relationship between an indicator variable and latent variables is depicted by the external model whilst the relationship between exogenous latent variables and endogenous latent variables is recounted by the internal model. The RPLS-PM’s outputs and inputs were derived by considering electricity generation data relating to Al-Zawya Steam Power Plant, Libya.