Pumped storage |


Okinawa Yanbaru seawater pumped storage power station in Japan


Ushering in a golden period


Pumped storage continues to ramp up the role it will play in global energy transitions


CHINA IS GRADUALLY TRANSFORMING its coal reliant energy system as it moves towards a more sustainable future. With many coal reserves now exhausted, and with outdated mines that do not meet safe production requirements having been or set to close, it’s resulting in a growing number of abandoned mines. Estimates suggest that such closed or abandoned facilities across the country could be in the region of 15,000, forming an underground space of approximately one million kilometres in length and 15.6 billion m3


in volume. As Zhongbo Su et al recently discussed in their


research published in the Journal of Energy Storage, many of these mines have complex geological conditions and phased shutdown plans, while research on the development and utilisation of them is somewhat lacking. How to safely and effectively reuse these abandoned underground spaces is now an important issue that needs to be addressed by the coal industry, and is also becoming a major discussion topic amongst scholars in China and abroad.


26 | July 2024 | www.waterpowermagazine.com


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