There was a time when the power industry addressed large swings in peak demand by overbuilding generation, transmission and distribution assets. Planners took the grid’s normal peak demand requirements and added their best guess for the mythical hot summer day when every customer would crank up their air conditioning full throttle. This is not the best way to address the task of balancing supply with demand, but it worked.
Storage Shock Absorber
Energy storage provides balance between supply and demand.