TECHNICAL AND ENVIRONMENTAL PERFORMANCE ASSESSMENT OF THE IRANIAN POWER PLANTS: A SEMI-DISPOSAL DEA APPROACH

摘要

One of the most important issues is to achieve maximum production of energy from a particular energy source, which ensures the complete protection of the environment. The current paper as the first application of flexible and powerful semi-disposability approach, performs an empirical technical and environmental efficiency analysis for 39 natural gas and gasoline power plants, including governmental and private property, during the years 2011-2016. Different scenarios for environmental analysis, namely, weak disposability, strong disposability and semi-disposability with different returns to scale assumptions are performed in the analysis. The primary results of multivariate assessment based on constant returns to the scale shows that 7 power plants with state ownership and 8 power plants with private ownership were among the most efficient power plants from the technical-environmental perspective. Parametric and non-parametric tests are performed and the result shows better performance of private power plants compared with governmental power plants.