The hybrid system is the combination of on-grid and off-grid systems. You are still connected to your existing utility provider while having the solar panels and a back-up battery. Your primary source of energy is going to be the solar panels and the back-up battery. Utility provider will only supply you if the energy demand of your house is higher than the generation of your solar panels and the energy stored in the back-up battery. This is ideal for bringing your utility bill close to zero every month and sustaining your energy at night and during power outages.
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