Halewick Lane battery storage site

Development of the county council’s battery storage site at Halewick Lane, Sompting is on course for completion by the end of 2026.

The former county council waste site, which has been vacant for more than a decade, will soon be home to a state-of-the-art, 16MW battery system capable of storing electricity and supplying it to the grid when it’s needed.

The project is an important part of the county council’s Energy Strategy which has already delivered two solar farms, one with battery storage, and other projects including more than 70 solar PV systems on schools and council buildings and energy efficiency upgrades. 

Large energy storage systems like the one at Halewick Lane will help to improve the resilience of the electricity grid, enabling us to integrate more renewable energy generators into our energy supply and switch to heating systems powered by low carbon electricity.

Batteries help to maintain the frequency of the electricity grid when there is less generation available from solar and wind farms.

The county council will also generate additional revenue by providing this service to the grid operators.

The battery system at Halewick Lane is designed to be safe, quiet, and unobtrusive.

The batteries will be located on a section of the Halewick Lane site in specially designed containers and protected by 24-hour CCTV within the secure compound.

The system will be monitored remotely and maintained throughout its lifetime by the county council’s specialist contractors, who will access the site from time to time.

The system is being built on our behalf by Enable Infrastructure.

Green Frog Connect are in charge of work to connect the system to the electricity grid.

October 2026

Site progress has remained on track throughout the year.

Despite some wet weather at the start of 2026, Enable infrastructure have completed: 

• Major improvements to the site concrete base.
• A new road within the perimeter fence to improve access and safety.
• Ducting, cabling and foundations for the battery units and associated equipment.
• Foundations for a new retaining wall in the area below the battery containers.

The next important milestone will be the arrival of the battery units at the end of October. These will arrive by road and be lifted into position by crane.

During construction we are continuing to work with Enable Infrastructure to make sure that local people are informed about the work, and that any disruptions are minimised.

If you have any questions about this information, or the project in general, please contact the county council’s Energy Services Team at energyprojects@westsussex.gov.uk.

Click for further information on the county council's renewable energy projects.