Environmental Efficiency of Energy Intensive Industries in Iran: Range Adjusted Measure

Within the last 3 decades, fossil fuels have been the largest source of greenhouse gas emissions. Energy intensive industries are the main energy-consuming sectors in Iran. Non-metallic mineral products, basic metals, and chemical products are considered to be the most energy intensive industries in Iran. this paper means to evaluate the environmental efficiency of industrial sector during 2008-2013, using RAM model, one of the slacks based model on DEA and also will separate the desirable and undesirable outputs. According to the results the least environmental efficiency belongs to producers of cement, lime, gypsum, brick, other non-flammable ceramic or crockery wares and non-metallic mineral products.Besides, sectors with the highest potential in reduction of co2 emmisions are listed as cement, lime, gypsum, brick, major chemicals expect for fertilizers and nitrogen compounds, fertilizers and nitrogen compounds and finally other industries.