UK Approves 50MW Vanadium Flow Battery Energy Storage Facility at Former Barry Power Station
Date: 17 Feb 2026 |
Source: www.electricityinfo.org, 17 February 2026
Planning approval has been granted for a 50MW long-duration energy storage facility at the site of the former Barry power station in South Wales, marking a significant step forward for UK renewable energy infrastructure.
The development, approved by Vale of Glamorgan Council, will utilise vanadium flow battery (VFB) technology to provide long-duration electricity storage, supporting grid stability and enabling greater integration of renewable energy across the United Kingdom.
The planning application states that the project aims to “deliver a new long-duration energy storage facility, which will improve the stability of the National Grid electricity network and facilitate greater use of and reliance upon renewable energy sources.”
The Barry power station, which operated until its decommissioning in 2019, has since been largely demolished. However, the site retains strategic grid connections and electrical infrastructure, making it ideally suited for modern energy storage deployment.
The reuse of the brownfield site supports UK decarbonisation objectives, while contributing to regional regeneration and sustainable land use.
Long-Duration Storage for the UK Grid
Battery energy storage systems are essential to balancing electricity supply and demand. They store excess power—often generated by wind and solar during low-demand periods—and release it when demand increases.
The Barry facility will deploy vanadium flow batteries, chosen for their advantages in long-duration energy storage (LDES) applications, including:
- Multi-hour discharge capability
- High operational safety with no thermal runaway risk
- Long service life and minimal degradation
- Stable performance under frequent cycling
Vanadium flow batteries are increasingly recognised as a safe and durable alternative to lithium-ion technology for grid-scale and long-duration storage projects in the UK.
Construction Timeline
Construction is currently expected to commence in 2030, with an estimated two-year build programme.
Once operational, the facility is anticipated to enhance:
- Electricity network stability in the UK
- Renewable energy utilisation
- Energy security and resilience
- Reduction of fossil-fuel reliance
Supporting the UK’s Net-Zero Strategy
The approval reflects the UK’s growing focus on long-duration energy storage solutions, widely considered critical for achieving net-zero emissions targets and managing renewable intermittency.