Abandoned mine pumped water storage

Can pumped storage power stations be used at abandoned mines?

However, there have been few studies on the establishment of pumped storage power stations at abandoned mines, and studies on the configuration of WP and PV capacity using pumped storage have focused only on the economy, reliability or environmental protection. Several major research gaps exist in previous studies:

Can an abandoned mine be converted into a lower reservoir?

Although risks associated with underground cavity project and hydropower plants are well known, there is currently no successful project that converts an abandoned mine into a lower reservoir for a UPSP.

Are pumped storage and abandoned mines a good investment in China?

A detailed review of China's latest developments in PSPPs is provided. The combination of pumped storage and abandoned mine demonstrates considerable social and environmental economic benefits. A case study of Panyi mine for developing PSAM in China are presented.

Are pumped storage reservoirs enclosed underground?

The reservoirs are enclosed underground, so this is referred to as “enclosed” PSAM, as shown in Fig. 7 (b). The China Energy Investment has built underground reservoirs in the goafs of multiple mines in the Shendong mining area , which provides a reference for the construction of all-underground pumped storage reservoirs.

What structures can be used as lower reservoirs in abandoned mines?

Typical structures in abandoned mines that can be used as lower reservoirs are often manifolds of tunnels with sidearms, bifurcations and dead-end passages, forming either a fish-grid network of branches or ring-type roadways .

When was underground pumped storage developed?

In 1969, Sorensen considered the development of underground pumped storage to be promising. Around the same time, several Swedish engineers proposed developing underground cavern-based lower reservoirs to complement surface reservoirs for pumped storage .