Whenever new energy is generated in a set of solar panels, it must be sent through a charge controller before it can be stored. (Charge controllers, also known as regulators, are sometimes built into solar batteries with the purpose of preparing the incoming energy so it.
This is officially called the Investment Tax Credit (ITC), and it's worth 30% of the total installation cost. For instance, if you spent $10,000 on solar panels, you'd earn an ITC of $3,000.
How many times an energy storage system can be charged and discharged depends on several critical factors, including 1. the type of technology used, 2. the initial design specifications.