Analysis of the prospects of solid energy storage

What are the advantages of SGES compared with other large-scale energy storage technologies?

Compared with other large-scale energy storage technologies, SGES has many advantages: high cycle efficiency (80 %–90 %), large energy storage capacity (up to several GWh), good geographical adaptability, and economy. Finally, the SGES's possible application scenarios and market scale assessment are presented based on SWOT analysis. 1. Introduction

Why do we need a large-scale development of electrochemical energy storage?

Additionally, with the large-scale development of electrochemical energy storage, all economies should prioritize the development of technologies such as recycling of end-of-life batteries, similar to Europe. Improper handling of almost all types of batteries can pose threats to the environment and public health .

What is solid gravity energy storage technology (SGES)?

Solid gravity energy storage technology (SGES) is a promising mechanical energy storage technology suitable for large-scale applications. However, no systematic summary of this technology research and application progress has been seen.

Is there a systematic evaluation method for large-scale energy storage?

Furthermore, there is no systematic evaluation method for large-scale energy storage, which is essential for comparative analysis of SGES technology with other energy storage technologies to clarify their application positioning and development prospects.

Can large-scale energy storage technology be compared with other energy storage technologies?

An evaluation method of large-scale energy storage technology has been first proposed. SGES with other large-scale energy storage technologies are comprehensively compared. The SGES's possible application scenarios and market scale assessment are presented based on SWOT analysis.

What is the cycle efficiency of solid gravity energy storage (SGES)?

The motor-generation unit is the energy conversion hub of solid gravity energy storage, which directly determines the cycle efficiency of solid gravity energy storage technology. The current efficiency of motor-generation units is about 90 %, so SGES's cycle efficiency is around 80 %.