Supercaps go large Spring 2013

Large scale energy storage, maybe on par with pumped hydro is possible with supercapacitors. John Miller explains how.

Electrochemical capacitor systems of truly gigantic size loom increasingly on the technological horizon. These large energy storage systems would be tied to the electric grid to help in load leveling the generation of electricity between day and night, an application commonly referred to as day/night storage or, sometimes, as demand 'time shifting'. While the demand for electricity reaches a maximum just after lunch in the middle of the day, the middle of the night finds that demand is . . .