Progress on Uskmouth Battery Energy Storage Systems

Overview of Uskmouth Sustainable Energy Park

The Uskmouth Sustainable Energy Park (USEP) in Wales is witnessing significant advancements with the development of two battery energy storage systems (BESS) — AW1 and AW2. These projects are poised to enhance the region's energy storage capabilities and contribute to the UK's renewable energy goals.

AW1 Project Details

Ampeak Energy has commenced construction on the first project, AW1, which has a capacity of 120 MW and can store up to 240 MWh of energy. The construction of AW1 began in October 2026, with a target to connect to the grid in the first quarter of 2027. The local construction firm, Jones Bros, is responsible for the build, while Canadian Solar is supplying the BESS units. This project is expected to play a crucial role in stabilising the grid and supporting renewable energy sources.

AW2 Project Progress

The second project, AW2, is a joint venture between Ampeak Energy and Econergy International. Recently, Ampeak Energy secured planning permission from Newport City Council for AW2, which will have a capacity of 250 MW and is designed to offer up to five hours of energy storage duration. Notably, the planning approval includes the removal of 140,000 tonnes of historic pulverised stored ash from the site, which is a significant environmental consideration.

Financial Aspects and Timeline

Ampeak Energy acquired complete ownership of the AW1 project for £299,000 in August 2024. For the AW2 project, construction is anticipated to begin following the completion of the AW1 project, with a potential capacity expansion of up to 1 GWh. The AW2 project is expected to further enhance the energy storage capabilities at the Uskmouth site, which can support approximately 3.5 GWh of battery storage projects overall.

Future Outlook

As the energy landscape continues to evolve, the developments at Uskmouth are crucial for meeting the UK's energy storage needs. The successful implementation of these BESS projects will not only contribute to energy resilience but also support the transition towards a more sustainable energy future. Stakeholders in the energy sector are keenly observing the progress of these projects, which are set to play a pivotal role in the region's energy strategy.