What are the advantages of a DC-coupled solar storage system?  

By Kathie Zipp Batteries can only store energy in its direct current (DC) form so the very essences of energy storage is DC. The reason that DC lends itself to being storable is because it has a unidirectional flow. A graphical representation of this would be a straight horizontal line. However, energy that is expressed in alternating currents (AC) has an electric charge flow that changes direction. This is depicted as a sine wave in a graph. Trying to store energy in its AC form would be like trying to capture a wave–it’s impossible.
Knowing that the battery is limited to DC energy and

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