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

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

OSTI ID:6336914

This appendix documents studies undertaken to determine the requirements for and the preliminary design of the lower (underground) reservoir for an underground pumped hydroelectric (UPH) facility. Operational, construction, and geotechnical requirements were examined. Overriding considerations including operating range, volume, construction methods, cavern cross section and reservoir layout were studied within the context of minimizing facility costs and optimizing the plant layout. The study led to a preliminary arrangement of fourteen parallel caverns each 60 ft wide by 85 ft high in cross section and 3610 ft in length. The requirements for and preliminary design of the intermediate reservoir in the case of a two-step UPH facility is also described. The design and the cost estimates presented in this appendix are based on the requirements for a 2000 MW plant providing 20,000 MWh of storage at 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) have modified some of the material given in this appendix. The finally recommended 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: 6336914
• Report Number(s): EPRI-EM-1589(Vol.8)(App.E); ON: DE81025127
• Country of Publication: United States
• Language: English

Related Subjects

13 HYDRO ENERGY
130000 -- Hydro Energy
25 ENERGY STORAGE
250300* -- Energy Storage-- Pumped Hydro-- (-1989)
CENTRAL REGION
CONSTRUCTION
COST
DESIGN
EXCAVATION
HYDROELECTRIC POWER PLANTS
LEVELS
MARYLAND
NORTH AMERICA
PEAKING POWER PLANTS
POWER PLANTS
POWER RANGE 1-10 GW
PUMPED STORAGE POWER PLANTS
SPACE
SURFACE WATERS
UNDERGROUND
UNDERGROUND SPACE
USA
WATER RESERVOIRS