Pumped-storage hydropower, or simply pumped hydro, is set to play an increasing role in Southeast Asia’s energy transition. This mature technology for large-scale energy storage can bolster grid reliability as fossil fuel generators are phased out in favor of renewable sources. Pumped hydro capacity in Southeast Asia is projected to surge from 2.3 gigawatts (GW) today to 18 GW by 2033, representing a nearly eightfold increase in less than a decade, and attracting an estimated total investment of between US$12 billion and US$70 billion. With…
