Leading manufacturer of utility-grade energy storage Invinity Energy Systems has successfully delivered, installed and energised a 1.8 MWh VS3 flow battery system at the European Marine Energy Centre hydrogen R&D facility on the island of Eday in the Orkney Islands in UK. Comprising 48 Invinity VS3 battery modules, with a combined capacity equivalent to the daily energy consumption of over 210 UK households, this innovative project will see Invinity's flow batteries integrated with tidal generation to optimise green hydrogen production at EMEC's hydrogen production plantTidal generation is predictable yet variable, with two high and two low tides occurring each day. Once the integrated system has been fully commissioned, the battery will 'smooth' the power from the tidal generation by storing during high power periods and releasing during low power periods to ensure EMEC's 670 kW hydrogen electrolyser has a stable, renewable power supply, allowing the continuous production of green hydrogen.Manufactured at Invinity's facility in Bathgate in West Lothian, the energy storage system was delivered in stages via road and ferry to the island located off the north coast of Scotland. The project is currently in its final commissioning phase with integration of the tidal turbine and electrolyser expected to complete shortly. Full demonstration of the integrated system is due to take place this autumn.