Scotland’s first utility-scale battery storage facility has been officially opened today, having begun delivering sub-second balancing services to National Grid at the end of June under a bespoke agreement secured before the hotly contested Enhanced Frequency Response (EFR) auction of 2016.

British investment trust, The Renewables Infrastructure Group (TRIG), has become the latest investor to enter the large scale energy storage market after buying a 20MW project from RES for £20 million (US$25.9 million).