Core Insights - The project at Suzhou Power Plant is China's largest "coal power + molten salt" energy storage project, which addresses the traditional coal power issue of "heat determining electricity" and provides a new model for flexible coal power generation [1][2]. Group 1: Project Overview - The molten salt energy storage project was completed and put into operation at the end of August, enabling coal power units to flexibly adjust their output, thus enhancing the overall efficiency of energy utilization [1][2]. - The project is part of the national initiative to transition to a low-carbon energy structure, addressing the increasing pressure on the power system for peak regulation as renewable energy sources grow [2]. Group 2: Technical Innovations - The molten salt storage technology allows excess heat from coal power units to be stored and used later for peak power generation, effectively decoupling heat supply from electricity generation [3][4]. - The project utilized a specific mixture of three types of nitrate salts, which operates efficiently within the temperature range of 190°C to 450°C, suitable for current heating unit operations [4]. Group 3: Performance and Benefits - The molten salt storage system significantly enhances the peak load and low load capabilities of the coal power unit, allowing for a minimum operational load reduction to 30% while maintaining continuous heating for up to 5 hours [7]. - The system is projected to improve renewable energy absorption by approximately 1.28 billion kilowatt-hours annually and reduce carbon emissions by about 85,000 tons, with an estimated annual revenue increase of 45 million yuan [7]. Group 4: Future Prospects - The technology developed for the Suzhou Power Plant is being promoted in other coal power plants, enhancing their responsiveness and flexibility, and contributing to the development of a new generation of coal power technologies [8].

Core Insights - The project represents the largest "coal power + molten salt" energy storage project in China, with a capacity of 1000 megawatt-hours, marking a significant advancement in coal power technology [1][2] - The introduction of molten salt storage technology addresses the limitations of traditional coal power plants, enhancing their flexibility in peak load regulation and heat supply [1][2] Group 1: Project Overview - The project is the first gigawatt-level coal power molten salt heat exchange equipment and control system in the country, serving as a demonstration of advanced green low-carbon technology [1] - The molten salt storage system acts as an external "heat storage battery" for traditional cogeneration units, allowing for heat storage during low demand and heat supply during peak demand [1][2] Group 2: Technical Innovations - The innovative system design includes a "main steam + reheated steam + four extraction steam" three-way extraction scheme, enabling energy cascade utilization and breaking the rigid constraints of traditional coal power [2] - A simulation platform for the coal power coupled steam heating molten salt storage has been developed, facilitating coordinated control of the "coal power + molten salt" storage project [2] Group 3: Operational Benefits - The project significantly enhances the peak load regulation capability of the power plant, allowing the minimum generation load to be reduced to 30% while maintaining continuous heat supply for 5 hours [2] - The molten salt system can provide continuous heating steam for 4 hours during peak load operation at 100% rated generation capacity [2] Group 4: Environmental and Economic Impact - The project is expected to increase the renewable energy absorption capacity by approximately 128 million kilowatt-hours annually and reduce carbon emissions by about 85,000 tons [2] - It will also increase heating capacity by 2.2 million tons per year, a 73% improvement over the previous maximum heating capacity, supporting the heating needs of over 40 local industrial and commercial enterprises [2]

Group 1 - Shanghai Electric Group Co., Ltd. and Shanghai Jingrong Technology Co., Ltd. have applied for a patent titled "A molten salt thermal storage heat exchange device and molten salt thermal storage steam generation system" [1] - The patent application was filed on March 2025, and the publication number is CN119958348A [1] - The patent aims to improve energy efficiency by utilizing heat released from the molten salt storage tank's insulation layer, thereby reducing energy waste [1] Group 2 - Shanghai Electric Group Co., Ltd. was established in 2004 and is primarily engaged in the manufacturing of electrical machinery and equipment, with a registered capital of approximately 1.56 billion RMB [2] - The company has invested in 109 enterprises and participated in 4,210 bidding projects, holding 1,737 patents and 155 trademarks [2] - Shanghai Jingrong Technology Co., Ltd. was founded in 2018, focusing on technology promotion and application services, with a registered capital of 20 million RMB [2] - The company has invested in 1 enterprise and holds 7 patents and 5 trademarks [2]