Barton | S4 energy

S4 Barton
Grid-scale storage backing the UK grid

Barton top view 2

In Development

Ready-To-Build

Under Construction

4

Site In Operation

About S4 Barton

The S4 Barton project is a 45 MW / 90 MWh battery energy storage system located in Barton, near Preston in Lancashire, United Kingdom. Once energised, it will support the UK’s net-zero ambitions by storing renewable electricity and delivering flexible power capacity equivalent to supplying approximately 22,750 households each year.

Currently in construction, S4 Barton will play a vital role in enhancing grid stability and reducing reliance on gas-fired peaking generation. By providing fast-responding, flexible capacity, the project will support the transition to a more resilient, low-carbon electricity system.

Project Details

Capacity 45 MW / 90 MWh
Duration 2 hrs
COD Q2 2026
BESS OEM Trina
Grid operator Electricity North West Limited

PQDP2845

Project Highlights

  • 45 MW / 90 MWh battery system supporting the UK’s net-zero electricity targets
  • High Voltage 132kV connected BESS
  • Delivers large-scale renewable energy storage and grid stabilisation
  • Reduces dependence on gas-fired peaker plants during peak demand
  • Developed in compliance with the UK’s Biodiversity Net Gain framework

Impact

Once operational, Barton BESS is expected to reduce approximately 17,500 metric tonnes of CO₂ emissions annually, equivalent to:

  • Supplying clean, flexible electricity to around 22,750 households each year
  • Avoiding the emissions associated with gas-fired peak generation
  • Strengthening grid resilience during periods of high demand
  • Supporting the UK’s 2035 target for a net-zero electricity grid
Barton top view

Frequently Asked Questions

The UK’s ambition to deliver a net-zero electricity grid by 2035 is fundamentally dependent on the deployment of large-scale energy storage. This project directly supports that goal by storing renewable electricity when generation is high and releasing it when demand peaks, strengthening grid stability and materially reducing reliance on gas-fired peaking plants. In doing so, it plays a critical role in enabling a more resilient, flexible, and decarbonised power system.

The project is built on proven, best-in-class technology. All technology partners have extensive track records in delivering safe, reliable energy systems that comply with UK and international standards. This ensures robust performance, long-term operational resilience, and alignment with regulatory and safety requirements.

Environmental responsibility is embedded in the project’s development. It complies with the UK’s Biodiversity Net Gain (BNG) framework, ensuring that biodiversity value is enhanced following construction. Further detail will be provided on the project’s BNG percentage and any local partnerships or community-led environmental initiatives as these are finalised.

From an impact perspective, the project will make a tangible contribution to decarbonisation. By substituting gas-fired generation, it is expected to reduce carbon emissions by approximately 17,500 metric tonnes of CO₂ per year. The calculation methodology and data sources will be confirmed to ensure transparency and credibility.

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