Release energy when solar generation is low or demand is high. The most common form of energy storage for solar projects is battery energy storage systems (BESS), but other technologies like pumped hydro, flywheels, and thermal storage. . 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. What Is Energy Storage? “Storage” refers to technologies that. . Renewable energy storage represents one of the most critical technologies in our transition to a clean energy future. The guide is organized aro nd 12 topic area questions. Each method has distinct advantages, making it vital for optimizing solar. .