Pumped Storage at Oroville-Design and Initial Operation

Pumped storage equipment has played a significant role in the storage and distribution of water at Oroville. This paper describes the mechanical design features of the pump/turbines installed in the Edward Hyatt Power Plant, and the niany tests performed during design and startup to achieve water delivery requirements. The experiences gained from this installation should stimulate the further development of pumped storage by utilities and consulting engineers.