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].
国家能源集团安徽公司宿州电厂：煤电机组装上超级“储热宝”