Real income from energy storage power station operation and maintenance

In addition, under the three development models, the three factors of capacity electricity price, capacity ratio covered by approved electricity price, and energy conversion efficiency also impact the economic benefits of pumped storage power stations. pumped storageprice mechanismdevelopment modelsoperating strategy 1. Introduction

Within 5 years, the pumped storage power station will pump 2.09 billion kWh of electricity annually and generate 1.682 billion kWh of electricity annually. Figure 5. Power consumption/power generation of the pumped storage power station during 2018-2022 (billion kWh). The typical daily operation strategy of the power station is shown in Figure 6.

The average annual cash inflow of the power station is ¥576.9557 million, the average annual cash outflow is ¥413.09972 million, the shared income is ¥9.3472 million, the deduction income is ¥37.3888 million, when the capacity electricity price is set to ¥446.1466 /kW, its internal rate of return on capital is 6.5%, meeting the policy requirements.

The operation of pumped storage units improves the penetration rate of renewable energy , gives play to the advantages of complementary units, and improves the economic feasibility of the power grid system . Pumped storage power stations in different regions have different development modes.

Under the “two-part electricity price” development model, the annual electricity income is ¥45.931 million, and the annual auxiliary service income can be the auxiliary service income of the above-mentioned Central China pumped storage power station in 2022, which is ¥805.1 thousand.

According to the different stages of the development of the power market, this paper puts forward the corresponding development models of pumped storage power stations, which are successively the “two-part price system” model, the “partial capacity fixed compensation” model, and the “completely independent market participation” model.