What are the key considerations when evaluating the feasibility of adding energy storage to an existing solar power plant, focusing on both technical and economic aspects?

When evaluating the feasibility of adding energy storage to an existing solar power plant, several technical and economic aspects must be carefully considered. From a technical perspective, the size and type of energy storage system must be determined based on the desired application, such as peak shaving, frequency regulation, or grid support. Battery technologies, such as lithium-ion, lead-acid, or flow batteries, should be evaluated based on their energy density, cycle life, efficiency, and cost. The storage system's capacity must be large enough to meet the desired ....