An energy model is used for solar generation calculation. The RETscreen international software was applied for this study. The RETScreen renewable energy system simulation software is very suitable for performing the preliminary evaluation of renewable energy projects and is used for this study. The RETScreen is an Excel based software which was created by Canmet Energy Research Centre, Natural Resource Canada and is available free of cost. The RETScreen is a validated software; it is easy to use and provides accurate result of energy. This software contains a number of worksheets for performing detailed project analysis. The RETScreen suite includes Energy Model, Cost Analysis, Emission Analysis, Financial Analysis and Sensitivity and Risk Analyses sheets [5].
Method of doing research is by site visiting (renewable energy power plants) and by using documented data from United Nation Framework Convention on Climate Change, UNFCCC. The data input to calculate the feed-in tariffs are different in each technology.