Sometimes energy storage is co-located with, or placed next to, a solar energy system, and sometimes the storage system stands alone, but in either configuration, it can help more effectively integrate solar into the energy landscape. Sometimes two is better than one. Coupling solar energy and storage technologies is one such case. Click the image to download the free selling. When you install a grid-tied solar system, the power grid acts as an immense source of energy storage. In short: if you add a battery. Many states, including California, Hawaii, Illinois, Maryland, Massachusetts, and Oregon, also offer incentives for solar storage systems. Lead-acid and lithium-ion batteries are the most popular storage choices, each with their own benefits and factors to consider. Energy storage is indispensable for grid integration of renewables and decarbonisation, and for energy security as well.