I will investigate more about the previous research about the parameters conside

I will investigate more about the previous research about the parameters considered to affect the generation of solar PV and how each parameter contributes to the total effect of the PV performance. 

– How will clustering help me in the research and what is the target we need to know after clustering the environment? 
– How the previous work and investigating this topic and  is there any topic or research investigating the clustering and especially in Saudi Arabia? 
– What are the methods used to do clustering and what was the target of each research ? 
– Any numbers considered in the literature? 
– Then you need to start using real data and cluster data and then what we need to do ? 
Find the gap in literature and how my research will start investigating and closing this gap ?