Gresham House Energy Storage Fund has reported a 135% rise in underlying portfolio EBITDA to £15.8m (€18.2m) (FY19: £6.7m) for the year ending 31 December 2020. The UK’s largest utility-scale battery energy storage fund, announced underlying portfolio revenues rose by 89% to £19m (FY19: £10.1m) in its second set of annual results since the IPO in November 2018. This increase was driven by frequency response services, trading and triads. During the year total operational capacity increased to 315MW (FY19: 174MW) with £85.3m invested and 141MW of operational capacity added. Furthermore, GRID remains market leader, with a share of around 30%, and largest operator by at least 2x.