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Demo Flow Battery


Electrochemical energy storage




Electrochemical energy storage


Eni Spa

Contact person 1:

Joseph Epoupa Mengou

Contact person 2:

Alessandra Tacca


Available from January 2023

TRL Level:


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Demo Flow Battery

Demo Vanadium Redox Flow Battery (VRFB) is settled in a microgrid, power supplied by a PV plant and having many utilities for the discharging step. The microgrid was put into operation with the aim to explore the potentials of a VRFB in providing different power and energy services to a real grid. It includes two photovoltaic (PV) power sources: a 4.8 kW crystalline system and a 1 kW organic system. The flow battery has a rated power of 2.5 kW, but it has already operated at a peak discharge power of 4 kW, while the storage capacity is 25 kWh. The stack, consisting of 40-cells with 600 cm2 active area, electrically connected in series and hydraulically fed in parallel. The microgrid supplies several loads, including the control-room air conditioner and lighting, with a total power demand of 2.5 kW, and more loads are expected to be connected in the next future. The Distributed Control System (DCS) controls the microgrid operation, switching on/off the loads depending on the microgrid operating conditions.

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