Case studies on hybrid pumped hydro energy storage systems

Energy storage is an energy supply strategy that adds up to the solution stream to meet the increasing energy demand. One of the traditional and more mature energy storage techniques is the pumped hydro energy storage (PHES) system. This system can be combined with other energy delivery technologies such as wind and solar to reduce the intermittent effects of stand-alone systems. PHES could also be used together with battery ternary systems to improve their operations. This chapter looks at hybrid PHES configurations and presents some existing and future case studies of hybrid PHES systems. The types of PHES hybrid energy systems that are analyzed in this chapter were largely photovoltaic (PV)-PHES hybrid systems, PHES-wind hybrid systems, and PHES-PV-wind hybrid systems while some cases of typical PHES systems are discussed.