Statera Energy has brought online the country’s largest battery energy storage system, marking a major step in Britain’s clean energy transition. The 300-megawatt Thurrock Storage facility, located just north of the former Tilbury coal station, is now delivering power to the grid, according to the company’s announcement on August 18. The site can supply up to 680,000 homes with instant electricity for two hours, providing 600 megawatt-hours of output within seconds. Positioned close to London, Thurrock Storage is designed to boost the resilience of the national grid by responding rapidly to fluctuating supply and demand, helping secure energy stability at critical times. Statera said the project represents a transformation of the site’s industrial legacy into infrastructure that supports the UK’s low-carbon future.
Image: Statera Energy
The company noted that the battery system is paired with Thurrock Flexible Generation, a 450MW plant that can provide backup during longer dips in renewable output. Together, the projects form part of Statera’s wider growth strategy: the firm currently has more than 2.1GW of UK projects built or under construction and a further 16GW in the pipeline. Statera reported that it has already committed £1 billion in investment, with plans to reach £7 billion by 2030. Beyond its grid role, the new facility is expected to generate local job opportunities, including apprenticeships focused on operations and maintenance. National Grid Electricity Transmission confirmed its role in successfully connecting the site, emphasizing the importance of large-scale storage in balancing renewable generation.
According to Statera, Thurrock Storage’s launch underlines the need for robust battery capacity to ensure that renewable energy is both reliable and flexible. While details on future expansion were not provided, officials pointed to the site’s contribution as a critical milestone in the UK’s transition to a more resilient, sustainable energy system.