The project adopts a high-temperature and low-temperature dual-tank molten salt energy storage system, using the technology of steam extraction and heating of molten salt by coal-fired units to meet the requirements of decoupling of heat and electricity generation and the flexibility of deep peak shaving operation.
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What is energy storage technology?
Energy storage technology allows for a flexible grid with enhanced reliability and power quality. Due to the rising demand for energy storage, propelled further by the need for renewable energy supply at peak times, energy storage facilities and producers have grown tremendously in recent years.
Renewable energy integration and decarbonization of world energy systems are made possible by the use of energy storage technologies. As a result, it provides significant benefits with regard to ancillary power services, quality, stability, and supply reliability.
Why is energy storage important?
Energy storage plays a pivotal role in the energy transition and is key to securing constant renewable energy supply to power systems, regardless of weather conditions. Energy storage technology allows for a flexible grid with enhanced reliability and power quality.
Research and development funding can also lead to advanced and cost-effective energy storage technologies. They must ensure that storage technologies operate efficiently, retaining and releasing energy as efficiently as possible while minimizing losses.
Another Energy Vault gravity energy storage project under construction in Zhangye City, Gansu Province, China. Image: Business Wire. Energy Vault has connected its first commercial EVx gravity-based energy storage system to the grid in China, while construction has been launched on three others, all-in-all totalling 468MWh of capacity.
A series of research progresses have been achieved and some important demonstration projects have been performed. During the period of 2021—2025, both fundamental research and key technology in the direction of energy storage will be supported by the national key R&D program "technology of energy storage and smart grid".