As part of the Grid4EU project, Enel is building an advanced control system capable of integrating distributed generation in the medium voltage network.

The EESS portion of the system has been installed close to the MV/LV substation called “Smistamento” and it has the following features:
• Apparent power: 1 MVA;
• Energy capacity: 1 MWh;
• System efficiency: 86%;
• Number of cycles: 2000.

It is composed of 5 independent battery subsystems (nominal capability 213 kWh), themselves composed of a sub-set of Li-Ion batteries managed by a Battery Management System (BMS) and a power conversion system (DC-AC). In case one subsystem breaks down, the other ones will continue to work. In parallel the EESS reduces the nominal capability and signalises the degraded operation.

Learn more about Grid4EU:

Lithium-ion Battery