Pumped storage power plants are power plants equipped with two reservoirs with an elevation difference: in the hours of low load, cheaper electricity from the common grid is used to pump water from the lower reservoir into the upper one, from which it gets discharged in the hours of high demand, setting off water turbines. PSPPs are essentially energy storage facilities that can reduce the risks of using wind and solar generators. This is becoming increasingly important for Thailand, where the overall share of low-carbon energy sources rose from 8% in 2013 to 16% in 2023.
