1) pondage power station 2) pumped storage plant a hydroelectric power station in which the filling period of the reservoir based on the cumulative water flows permits the storage of water over a period of a few weeks at the most GRM: n. (1,2) Note: in particular, it permits the cumulative water flows to be stored during periods of low load to enable the turbine to operate during high load periods on the same or following days References: GENhydroelectric power station GENhydroelectric generating station GENhydroelectric works GENhydroelectric plant