Solar batteries get a lot of hype, but are they actually necessary? If your main goal is to save money, the answer is usually no … .most systems are tied to the grid, so you still have power at night and earn credits for extra energy you produce. But batteries shine in areas with frequent outages or if you want energy independence. They give you backup power and more control, but they do add cost. Think of batteries as peace of mind, great if you need it, skippable if you don’t. The good news? You can always add one later if your needs change.