UK-based vanadium flow battery (VFB) specialist Invinity Energy Systems plc (AIM:IES) is moving ahead with two projects totalling 31. 5 MWh of capacity following approvals in both the UK and Hungary. Image by Invinity Energy. . Fraunhofer ICT says the pilot facility has demonstrated how clean energy can feed the grid regardless of weather conditions. The battery has a power output of 2 MW and. . The storage system built by Endesa's renewable subsidiary, Enel Green Power España, is an innovative solution that enables unlimited charge and discharge cycles with no negative impact on the environment. The battery installation, which received funding from the SOLBAL photovoltaic investment aid. . Vanitec is the only global vanadium organisation. Vanitec is a technical/scientific committee bringing together companies in the mining, processing, research and use of vanadium and vanadium-containing. The EU is overwhelmingly reliant on Russian vanadium.