The project is one of the winning projects in the recent Innovation Tender. Image: Fluence. Global system integrator Fluence and utility Münch Energie are developing a solar-plus-storage plant with 34MWh of storage in Merseburg, Germany. Fluence will assemble a 11.7MW/34MWh battery energy storage system (BESS) for the project using its Gridstack energy storage product. The solar PV will have a power of 34MW and the project is scheduled for completion in 2023.