Recently, the largest energy storage system in China's cement industry has been fully completed and put into use.
A 43.2m W/107.3m Wh energy storage system built in Yingde Cement Plant in Guangdong Province is expected to save 21.3 million yuan of electricity expenditure annually by adjusting peak and valley electricity consumption. At the same time, it can also receive an additional 2.7 million yuan/year special subsidy for energy storage project investment from the Guangdong Provincial Government.
It is understood that not long ago, another 5.6MW/33. At present, the comprehensive power consumption per ton of cement in China is about 90 kilowatt-hours (including 2021, the National Development and Reform Commission issued the Notice on Further Deepening the Market-oriented Reform of Coal-fired Power Generation Prices, which made it clear that the transaction price of coal-fired power generation market in high-energy-consuming enterprises was not limited by a 20% rise, and many provincial development and reform commissions have adjusted the time-sharing price mechanism one after another to further widen the peak-valley price gap. With the establishment of peak electricity price mechanism in many places, the production cost of cement enterprises with large electricity consumption will increase significantly. In particular, the current cement market is in the doldrums. enterprises becomes more and more difficult, it has become an urgent need for cement enterprises to reduce operating costs to enhance their competitiveness. In addition to the high cost of electricity, the cement industry is also greatly affected by seasonal regional power rationing. According to the analysis of China Cement Net · Cement Big Data Research Institute, in 2021, the nationwide power limitation and production limitation spread under the "double control of energy consumption" had a direct impact on the cement price, which once led to a sustained surge in cement prices; in 2022, due to the extreme hot weather, regional power limitation occurred in Sichuan, Chongqing, Zhejiang and other places, and the production of local cement plants was also affected. This year, the Sichuan region was also affected by the continuous high temperature, and there was a large-scale power shortage again. Industrial power users in the province have experienced nearly a week of production shutdown, high temperature holidays, and electricity for the people. According to the feedback from local cement enterprises, all rotary kilns and mills of cement enterprises in the region were shut down due to the lack of electricity. In recent years, peak electricity price policies have been set up in many places in China, and the price difference between peak and valley has been widening year by year, and the economy of installing energy storage in cement enterprises has also been significantly enhanced. According to the agent purchase price announced by power grid enterprises in August, the peak-valley price difference in Shanghai is the highest in the country, with the highest price difference of 1.9027 yuan per degree, followed by 1.4366 yuan per degree in the five cities of Guangdong Pearl River Delta. Hunan Province 1. The peak-valley electricity price difference exceeds 0.02 as a backup power supply and emergency power supply: The energy storage system can be used as a backup power supply system in the cement plant area. When the power system is interrupted or fails, the energy storage system can quickly switch to the emergency power supply mode. Ensure the power supply of important equipment in the cement plant to avoid equipment damage caused by sudden power failure. Under the predicament of power shortage in a short time, it can also support the normal operation of the production line in the factory area and avoid production interruption and economic losses. 03 Integration with renewable energy: The distributed energy storage system can be combined with renewable energy such as distributed photovoltaic to solve the problems of volatility and intermittency of renewable energy, improve the utilization rate of green power in the plant area, and promote low-carbon production in the plant area. 04 Rich subsidies to speed up cost recovery: Since 2022, user-side energy storage subsidy policies have been frequently introduced. Up to now, more than 30 user-side energy storage subsidy policies are being implemented across the country, mainly in the form of capacity subsidies, discharge subsidies and investment subsidies. The support of subsidies will further shorten the recovery cycle of industrial and commercial energy storage projects. 01 Gezhouba Cement On August 15, Gezhouba Yicheng Cement Co., Ltd. and Hunan Yingke Energy Storage Technology Co., Ltd. successfully signed an energy management contract for the energy storage power station, which will use Banqiaodian Town Park in Yicheng City to build a 13.6M W/27.52 MWh energy storage power station. The investment scale of the first phase is 5.1MW/10.32 MWh, and the investment scale of the second phase is 8.5MW/17. After completion, the project income will be realized through the peak-valley arbitrage mode of saving electricity charges based on the time-of-use electricity price policy of Hubei power grid. In April this year, the first energy storage power station of Gezhouba Cement Company, the energy storage power station project of Shimen Cement Company, was officially connected to the grid. It is understood that the project through the "sharing contract energy management" model, to achieve zero cost sharing of net income. With the "two-charge and two-discharge" charging and discharging strategy, the daily maximum discharge capacity can reach 16000 kilowatts per hour. It is estimated that 4 million kilowatt-hours of electricity will be supplied smoothly every year, and 2 million yuan of peak electricity charges will be saved in one year, which will not only reduce costs and increase efficiency for enterprises, but also contribute to the stable operation of the power grid. Among them, Zhangjiagang Energy Storage Power Station Project is currently a large-scale user-side electrochemical energy storage power station in China, and is also one of the eight energy storage demonstration projects of the State Energy Administration in 2020. Zongyang Conch 6MW/36 MWh all-vanadium flow battery energy storage is the first all-vanadium flow battery energy storage demonstration project of Conch Group. It is also a large-scale all-vanadium redox flow battery user-side energy storage power station in the industry, which has played a guiding and demonstration effect on the popularization and application of domestic user-side energy storage power stations. (Battery container for all-vanadium redox flow battery energy storage power station) 03 04 As early as 2021, Tapai Group has invested about 13. Tapai Group said to the outside world that, after calculation, the cost of photovoltaic power generation project of" self-use, surplus electricity access to the grid "in the company's factory area is more than 20% less than current purchase price. How much does it cost for cement enterprises to allocate energy storage? Cement enterprises have many advantages and advantages in investing in energy storage, so how much investment is needed to configure a set of energy storage system? Taking this as the investment unit price, the investment cost of a 1MW/2WMh industrial and commercial energy storage power station is about = 2,000,000Wh * 1.596 yuan/Wh = 3192000 yuan = 319. The price of 2-hour energy storage system will be slightly higher than that of 4-hour energy storage system.
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