Assessment of the Conceptual Role and Economic Viability of Pumped Hydropower Storage (PHS) in the Southern Africa Power Pool (SAPP): The objectives of this analytical study are to assess the conceptual role and economic viability of PHS in SAPP through identifying and quantifying the costs; benefits and value that enhance energy security; climate resilience and facilitate a low carbon transition in the region and countries. The key questions to address in the study are what role and value of PSH has in a broader energy sector point of view. Should it be considered an energy generation plant or an energy service facility tailored to meeting the demands of the evolving power system?