Preliminary design study of underground pumped hydro and compressed-air energy storage in hard rock. Volume 8. Design approaches: UPH. Appendix A. Upper reservoir. Final report

Technical Report · Wed Apr 01 04:00:00 EST 1981

OSTI ID:6434689

This appendix documents studies undertaken to determine the preferred arrangement of the upper reservoir and its associated surface facilities for an underground pumped hydroelectric (UPH) facility. Overriding considerations including operating range, volume and lining of reservoir, embankment design, intake/outlet arrangements and filling and make-up water provisions were studied within the context of minimizing facility costs and optimizing the plant layout. The study led to the selection of a reservoir formed by an embankment of compacted rockfill together with an intake/outlet structure located in the embankment. The reservoir floor and upstream slopes of the embankment will have an asphalt lining to prevent leakage. The material and cost estimates presented are based on the requirements for a 2000 MW plant providing 20,000 MWh of storage with a nominal head of 4600 ft. Studies subsequently carried out, including head optimization analyses for the overall UPH surface and underground configuration and further refinement of selected designs (see Volume 8, Design Approaches, UPH), may have modified some of the material given in this appendix. The finally adopted arrangement is described in Volume 11, Plant Design, UPH.

• Research Organization: Potomac Electric Power Co., Washington, DC (USA); Acres American, Inc., Buffalo, NY
• DOE Contract Number: AC02-77ET28013
• OSTI ID: 6434689
• Report Number(s): EPRI-EM-1589(Vol.8)(App.A); ON: DE81025112
• Country of Publication: United States
• Language: English

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13 HYDRO ENERGY
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25 ENERGY STORAGE
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CENTRAL REGION
CONSTRUCTION
COST
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GROUND LEVEL
HYDROELECTRIC POWER PLANTS
LEVELS
MARYLAND
NORTH AMERICA
PEAKING POWER PLANTS
POWER PLANTS
PUMPED STORAGE POWER PLANTS
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SURFACE WATERS
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WATER RESERVOIRS