National Grid has connected the UK’s largest battery energy storage system (BESS) to its transmission network at Tilbury substation in Essex.
Developed by Statera Energy, the 300MW Thurrock Storage project is now energised and delivers electricity flexibly to the network across London and the Southeast.
The Thurrock Storage project is capable of powering up to 680,000 homes, with a total capacity of 600MWh. This helps to balance supply and demand by using surplus clean electricity and discharging it instantly when the grid requires it.
National Grid connected UK’s largest battery storage system reinforcing its Tilbury substation to ensure that the region’s network could safely sustain the battery’s additional load, with new protection and control systems installed to ensure a robust connection.
Previously, the substation served the coal-fired Tilbury A and B power stations on adjacent land prior to their demolition. This shows that the connection of the Thurrock Storage facility marks a symbolic transition from coal to clean electricity at the site.
National Grid is continuing work at Tilbury substation to connect the 450MW Thurrock Flexible Generation facility. The facility is another Statera project that is set to support the energy needs of the region.
John Twomey, director of customer and network development at National Grid Electricity Transmission, said, “Battery storage plays a vital role in Britain’s clean energy transition. Connecting Thurrock Storage, the UK’s biggest battery, to our transmission network marks a significant step on that journey. Our Tilbury substation once served a coal plant, and with battery connections like this, it’s today helping to power a more sustainable future for the region and the country.”
Tom Vernon, Statera Energy CEO and founder, said,“We are delighted that Thurrock Storage is now energised, following its successful connection to the grid by National Grid Electricity Transmission. Increasing BESS capacity is essential for supporting the grid when renewable generation, such as solar and wind, is low or changes quickly. It ensures that energy can be stored efficiently and returned to the grid whenever it’s needed.”
The connection of the UK’s largest battery storage system follows energisation in July of the 373MW Cleve Hill Solar Park in Kent. This is the largest solar plant in the country, with National Grid connected to its adjacent Cleve Hill substation.
