Reduction of CO2 emissions in automative plant by usingAHP-Multimoora hybrid approach

With the acceleration of industrialization in recent years, a serious increase observed in fossil fuel consumption in order to meet the growing energy demand. This dependence on fossil fuel caused a significant increase in CO2 emissions and stimulated ecofriendly industrial enterprises to utilize various methods such as obtaining energy from renewable energy, afforestation and carbon offset certification in order to reduce CO2 emissions. This study is aimed to optimize the decisions to be taken to reduce CO2 emissions which are caused by a manufacturing plant in automotive industry. In production process of plant, CO2 generated by natural gas consumption of heating systems such as furnace, hot water boilers and electricity consumption of the equipments such as motors, fans and pumps. In this study AHP based Multimoora have been used as a multi-criteria decision-making technique to select optimum solution among alternative CO2 reduction projects. For analysis, initial investment cost, operation cost, energy cost, space requirement, application period, ease of adaptation and social impact have been determined as decision criteria. Comparisons required to calculation of criteria weights by AHP method have been determined by surveying the experts who work in similar projects as a part different engineering disciplines. Hydroelectric, solar electricity system, solar thermal system, afforestation and carbon offset have been determined as an alternative solution by the project team and calculations done corresponding to each criterion. Results analyzed by Multimoora method and as a result of the evaluations, it has been concluded that hydroelectric system is the most appropriate solution to achieve CO2 reduction in automotive industry.