Energy is an extremely important basic industry. China is a developing country where coal accounts for around 75% of primary energy. Although the level of global economic integration is increasing, the energy needed to support economic development must mainly come from domestic sources. Therefore, the use of coal as the main energy source for long-term development is inevitable(Lu, J., 2010). Energy issues are always important from the perspective of sustainable development, and coal-based energy supply forms the core of China's energy issues. As far as major coal-based pollution in China is concerned, promoting electric power and increasing the conversion ratio of coal to electricity are the important and effective measures to reduce air pollution, protect the environment, and develop the circular economy(Wang, S., 2009).This paper introduced the power industry’s cycle of economic development, analyzed industry-specific economic characteristics using cycle indicators. According to the characteristics of the power industry, established an index system suitable for the industry features, and calculated using the analytic hierarchy process right weight value. Taking the Tianjin SDIC power plant as an example, its characteristic cycle of economic development was introduced. Combined with the evaluation index system of power industry circular economy, the level of economic development cycle was evaluated using a fuzzy comprehensive evaluation method, and the application of the index system was described.
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