Solar generation capacity is a primary determinant of how much electricity can be stored. Several factors influence this range. Solar photovoltaics can store substantial amounts of electricity depending on several factors including the system's capacity, efficiency, and storage technology, 2. Typically, residential setups harness around 5 to 15 kW, 3. Solar photovoltaic (PV) systems, integrated with battery storage, typically yield between. . Have you ever wondered how much solar energy you can actually store in a battery? With the growing popularity of solar panels, understanding battery storage is key to maximizing your energy use. Imagine harnessing sunlight during the day and using that power even when the sun goes down.