Current Research Status and Development Prospects of Long Duration Energy Storage System

Abstract

[Introduction] Global climate change and its negative impacts are serious humanitarian challenges. Accelerating the construction of a new energy system and promoting energy transition to green and low-carbon are the key to addressing the above challenge. Building a new power system is the central link in planning and constructing a new energy system. [Method] The characteristics and challenges in the six stages of constructing a new power system with new energy source as the main body, and potential roles of energy storage were described and analyzed. The viewpoint that energy storage, especially long-term energy storage, is a key technology for building a new power system was proposed. [Result] To deal with vague concept, unclear technical system and undefined R&D system for long duration energy storage in China, by analyzing the international use cases, the concept system of long-duration energy storage and its technology system covering four categories (including mechanical energy storage, thermal storage, electrochemical energy storage, and chemical energy storage) are proposed. And the R&D trends in developed countries are shown. [Conclusion] It is expected that the relevant content can provide reference for the research and application of long duration energy storage in China.

Keywords

• energy transition
• new power system
• long duration energy storage
• concept system
• technical system
• r&d trends