Sürdürülebı̇lı̇r ve yenilenebilir enerjı̇ santrallerı̇nı̇n bulanık VIKOR ve bulanık TODIM teknı̇klerı̇yle değerlendı̇rı̇lmesı̇

Sustainable and renewable energy systems are an effective solution to depletion of fossil energy resources and prevent serious environmental problems resulted from energy production. The government of Turkey is aware of current global warming issue and puts emphasize on growing renewable energy utilization rate in meeting energy demand of the country. In this regard, it encourages investors economically to invest in renewable energy field. Therefore, we aimed to find out the best energy alternative and thus to guide decision makers on energy investments. We evaluated power plant types of solar, wind, hydraulic and landfilled gas (LFG). For the evaluation of the alternatives, there are many factors to consider and multicriteria decision making (MCDM) methods are an appropriate approach to this issue. We determined 22 evaluation criteria and conducted this study with two different MCDM technics, which are VIKOR and TODIM. TODIM considers risk factor while ranking operation. This feature of TODIM results from prospect theory. Besides, VIKOR is a strength MCDM technic that provides a compromise solution. Additionally, in order to cope with vagueness and uncertainty, we integrated fuzzy approach into VIKOR and TODIM methods. Finally, according to VIKOR application results, LFG is the best performing resource and in TODIM results we have two different ranking lists. When attenuation factor of loss θ equals to 1 or 2.5, solar energy emerged as the best option. In the other scenario when θ equals to 3 or 4, solar and LFG energy ranks interchanged and LFG energy placed in the first order.