Underground pumped storage scheme in the Bukit Timah granite of Singapore
- Nanyang Technological Univ. (Singapore)
Pumped storage is an energy storage method that involves the pumping of water from a lower reservoir to an upper reservoir during off-peak period using low cost power and releasing of the water from the upper reservoir to produce electricity during peak load period. Because of the very small and relatively flat land area of Singapore, a conventional surface pumped storage plant is not feasible. A pumped storage plant can be constructed here by siting the upper reservoir in one of the many abandoned granite quarries and by placing the lower reservoir and the powerhouse underground in the Bukit Timah granite, which is sound, massive and impervious. The capital costs for a pumped storage plant could be the same as those of an oil-fired plant of a comparable size. When the very high cost of land in Singapore is taken into account, an underground pumped storage scheme for peaking purposes becomes attractive. 7 refs., 4 figs., 3 tabs.
- OSTI ID:
- 447225
- Journal Information:
- Tunnelling and Underground Space Technology, Vol. 11, Issue 4; Other Information: PBD: Oct 1996
- Country of Publication:
- United States
- Language:
- English
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