Özet:

In today's world, where the world population is increasing, the need for energy is increasing day by day. The decrease in fossil fuels used as a traditional energy source and the very high emission of carbon dioxide (CO2) have led businesses to seek new energy. In this context, biogas production is important in terms of being a renewable energy source and not harming the environment. In this study, the supplier selection process of a business operating in the biogas energy generation sector was examined using SWARA and Fuzzy COPRAS methods, which are MCDM methods. In the study, firstly, the criteria used in the supplier selection process were determined and the importance levels of these criteria were determined by using the SWARA method. As a result of the analysis, the gasification rate criterion was the most important criterion in the supplier selection process, and the least important criterion was the price criterion. Fuzzy COPRAS method was used in the evaluation of supplier alternatives. According to the results of the analysis, the best supplier alternative was found to be A3.

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