The economic viability of customer-side energy storage projects in China is constrained by high initial investment costs and limited peak-valley price spreads,resulting in a heavy reliance on government subsidies.This paper constructs an economic benefit model for customer-side energy storage and a subsidy impact evaluation model to identify the most effective subsidy approach for such projects in China.First,the paper reviews time-of-use(TOU)electricity tariffs and new energy storage subsidy policies across different regions of China.Second,an economic benefit model is developed that accounts for various subsidy approaches,incorporating the concept of subsidy elasticity to establish a subsidy impact evaluation model.Finally,a case study is presented using actual data from a commercial and industrial energy storage project in a northeastern region.The results indicate that providing subsidies based on discharge volume significantly improves the economic benefits of customer-side energy storage projects.To ensure stable and sustainable returns for these projects,it is also essential to diversify revenue streams.
关键词
用户侧储能补贴/分时电价/峰谷套利/经济效益/补贴弹性
Key words
subsidies for customer-side energy storage/time-of-use tariffs/peak-valley arbitrage/economic efficiency/subsidy elasticity
维普
万方数据