Essentially, a BESS consists of battery modules that store electrical energy generated from solar panels. . We express our gratitude to the whole First Solar organization for providing substantial contributions to this project in the form of a fully operational 430-kW photovoltaic (PV) power plant and control system, valuable guidance, and countless hours of engineering and logistics support. Sometimes two is better than one. Coupling solar energy and storage technologies is one such case. The reason: Solar energy is not always produced at the time. . As a solar developer or EPC, increasing solar energy penetration at your power plants is likely a top priority.