For most new homes, they should be equipped with good enough electrical panels. Older homes may require an upgrade in order to install a solar panel system. If your home does not have the proper electrical panels, it may be unsafe and a hassle for the circuit breaker to keep resetting. A main panel change may be needed in older homes or do accommodate a larger solar panel system. This is because the current panel doesn’t have enough amperage to handle the power capacity potential of the newly installed solar system. Most homes today need at least a 200-amp service, but some older homes may have less. The main service panel doesn’t have enough circuits, so there is no space for a solar circuit.