Abstract: Abstract:Under the impact of the natural gas price, the feedin tariff and other factors, the natural gas power generation has not sufficient competitiveness. In our country, the current ongrid price of the gas power generation is the temporary ongrid price, which does not reflect the scarce resource, the environmental value and other external costs. The influences of the natural gas price and annual utilization hours on the economic efficiency of gas power generation were analyzed. Considering the peakvalley timeofuse power price and the environment value, the economic benefit of the gas power generation and the benefit of coalfired power generation were compared. Based on a guess and estimate, the rational grid purchase price of the gas power generation was put forward, which provides a reference for development of the gas power generation industry.

Key words: Keywords:natural gas power generation, economic efficiency, feedin tariff, environmental value, peakvalley timeofuse power price