Research on the impact of changes in the proportion of new energy consumption on energy efficiency

• 1、Management and Economy School,Tianjin University,Tianjin 300000

Abstract：The main energy consumption structure is the traditional fossil energy, such as coal, oil and so on. It is the main cause of environmental pollution, especially air pollution, while developing economy in recent years. Therefore, paying attention to environmental protection and changing the energy structure has become an important task during the "13th Five-Year" period. Among them, the development of new energy industry, to enhance the proportion of new energy in the energy structure is one of the main means of environmental protection and industrial upgrading. Under this guidance, the new energy industry has developed rapidly in recent years, and its proportion in the energy structure has been increasing. It is worth noting that the change of energy consumption structure driven by the development of new energy in China will promote the change of energy efficiency and make the development of energy efficiency in China enter a new stage. Based on the Malmquist index method, this article analyzed the energy efficiency under different energy structures using the panel data of China’s 29 provincial administrative units during the period between 2002 and 2012.Furthermore, based on the Shannon Wiener index, the correlation between the energy structure diversity and energy efficiency in China is measured.It is proved that the change of energy structure has a significant impact on energy efficiency. Through measurement and analysis, the conclusions are given: The change of China's energy structure will significantly affect the size of energy efficiency, and in the 2003-2008 year, this effect is negative, and the impact is great. During the study period, the energy efficiency was reduced on the whole, as the result of the degeneration of technical progress index; The differences of the related efficiency indicators among different areas are still obvious. But the relative ranking has changed; In a short term, the changes in energy structure (refers to the development of clean energy and renewable energy) will not have a significant positive impact on energy efficiency. On the contrary, it will cause the decline in the overall efficiency because of the degeneration of scale efficiency and technical progress; In the long run, changes in China's energy structure will turn to increase its energy efficiency, and are expected to achieve both economic and environmental benefits.

Keywords： Energy Efficiency Energy Structure New Energy Malmquist Index Shannon Wiener Index