The Proposal


The Proposed Achies BESS

The Achies BESS project aims to provide a reliable energy storage solution near the Spittal Converter Station.

The location of the proposed development is outlined in red

Further information

  • Location

    To be situated on land to the northwest of the existing Spittal Converter Station. Sun4Net has an agreement to connect the Achies BESS to the existing Converter Station in July 2027.

  • Key Elements

    • Battery energy storage units (around 70 in total, subject to final design) 
    • A dedicated substation
    • Underground cable to connect the BESS to the existing Spittal Converter Station
    • Site access tracks for maintenance and emergency vehicles
    • Drainage infrastructure
    • Safety and protection systems
    • Landscaping and biodiversity enhancements

  • Capacity

    The BESS will have the ability to store and discharge electricity as needed, supporting grid stability. The proposed export capacity of the BESS is 162 MegaWatts (MW). To put this into context, 1 MW will power 2,000 homes for 1 hour, based on average UK electricity consumption1.

    1 What is the difference between a megawatt and a megawatt hour?

  • Environmental Considerations

    The project will undergo rigorous environmental assessments to minimise impact and enhance biodiversity where possible.

  • Safety

    Safety is a top priority for the Achies BESS project. The system will incorporate industry-leading fire detection and suppression technologies to mitigate risks. Comprehensive fire safety measures, including thermal monitoring, emergency response plans, and strict adherence to regulatory standards, will be implemented to ensure the highest levels of safety.

Keeping you informed

We are committed to keeping local communities informed and involved throughout the development process.

Please access detailed up-to-date information posted in the ‘Documents’ page

View documents