Cross-season energy storage underground energy storage

What is seasonal thermal energy storage (STES)?

Therefore, when the "source" side (solar heat source side) and the "load" side (energy using side) have significant seasonal characteristic, the seasonal thermal energy storage (STES) can effectively solve the mismatching characteristic of the solar energy heating system in time, space and strength.

How to promote solar energy with seasonal storage?

Therefore, the policy system should be improved in planning formulation, legislative support, operation supervision, engineering monitoring, standard formulation and incentive measures to promote the steady development of solar energy with seasonal storage.

Are solar energy storage systems underground?

The experience of USTES applications worldwide in recent years shows that most of the solar energy seasonal storage projects have significant economic, social and environmental benefits. However, the key part of solar energy storage system is underground.

What is large-scale underground energy storage?

Renewable and Sustainable Energy Reviews, 2011, 15 (1): 839-844. <p>Large-scale underground energy storage technology uses underground spaces for renewable energy storage, conversion and usage. It forms the technological basis of achieving carbon peaking and carbon neutrality goals.

What are the five underground large-scale energy storage technologies?

In this work, the characteristics, key scientific problems and engineering challenges of five underground large-scale energy storage technologies are discussed and summarized, including underground oil and gas storage, compressed air storage, hydrogen storage, carbon storage, and pumped storage.

What is a large capacity solar thermal energy storage system (STES)?

Institute of Electrical Engineering, Chinese Academy of Sciences carried the study on large capacity STES. The STES project was located in Zhangjiakou (as shown in Fig. 13) with thermal storage volume of 3000m 3. Solar heliostats with collecting area of 650m2 are used to collect solar thermal energy.