Gresham House Energy Storage Fund plc announced that it has completed the augmentation of its Enderby and West Didsbury projects, which are both now trading at their increased capacity. This increases GRID's operational capacity to over 1GWh (1, 030MWh), the first battery storage business in the UK to have passed this milestone. The augmentation of the Enderby (50MW) and West Didsbury (50MW) sites has involved upgrading each from 1-hour to 2-hour duration, adding 100MWh of additional operational capacity.

Both sites had been designed for these upgrades from inception. This milestone marks the completion of the second and third augmentation projects in line with the plan set out in GRID's latest annual report. So far, in 2024, GRID has added 117MWh to currently operational projects through augmentation, taking the operational portfolio to 790MW/1030MWh.

A further 220MWh will be added with the remaining four augmentation projects.