The study of economy-energy-environment (3 E) efficiency in Iranian industries

From any amount of energy input to each system is returned to the environment as waste. For this reason, for processes to be sustainable, it is important to focus on the mechanism that assigns the system input (s) to the output (s). This mechanism is economics, in the definition of sustainable development. What is the trend of changes in energy and environment efficiencies in Iran's economy industries? The answer to this question, as a question of present paper, is Necessary to conclusions that can guide policy recommendations. For this purpose, the energy consumption data from different types of carriers and pollutions (by types of pollution) along with the output value, will be used for 23 industries (two-digit ISIC codes) during the period 2009 to 2016 This information was used to calculate the Malmquist Productivity Index (MI).The results of the MI index show that the overall performance improvement has slowed down in recent years. Although there has been little improvement, it has been due to structural changes in the industry, not to an increase in their technical efficiency. However, the textile industry is a good example where overall performance improvements have occurred due to advances in technical efficiency. Also, from the six major industries, two major industries ("food" and "base metals") have seen almost no overall improvement of any kind. Therefore, it is recommended that policymakers focus on improving the efficiency of two mentioned industries. It is also suggested that policymakers focus from technical improvements to structural changes.