What kind of solar container capacitor is it

Container-MVar is a fully engineered, medium-voltage, metal-enclosed capacitor bank (Power-MVar or Synchro-MVar from Powerside) housed entirely in a standard 20'' or 40'' ISO container. The use of supercapacitors for solar energy storage will make grid-connected power generation. It consists of two conductive plates separated by an insulating material known as a dielectric. When a voltage is applied across the plates, electric charge accumulates, allowing the capacitor to temporarily. They are generally inexpensive and offer high capacitance values,making them ideal for use in power supply circuits. Capacitors play a key role in power conversion systems as they function to smooth and regulate power flow, protect against voltage surges and filter unwanted signals.