What is the difference between a hydroelectic plant and a pumped storage plant?
One produces renewable electricity, the other consumes it. Hydroelectric plants create new net power by damming a free flowing water source and releasing the water through generators to produce electricity. Pumped storage plants are large reservoirs that only store energy generated by power plants. Because of large scale inefficiencies and water evaporation, pumped storage wastes 25% of the energy stored, dramatically increasing the cost of power generation.