Commercial Energy Storage is the current buzzword heard these days when discussing energy, energy savings and energy management. But what is exactly is “energy storage”?
Energy storage can be any technology that captures energy from an available source and stores it for future use. This means it's converted from its captured form, converted to its “stored” form based on the technology, and then converted to another form (not necessarily its original form) for later use. One of the earliest forms of energy storage used in the commercial industry is thermal storage (ice).
Thermal facilities used grid electricity to make ice at night during less expensive (off peak) times. This ice was then used to provide space cooling for offices and buildings during the day when grid electricity was most expensive (on peak). (Continued below).