Castlereagh Battery Storage, Co. Down

We are constructing a battery energy storage facility on the outskirts of south Belfast

The Castlereagh battery storage facility is located near the existing substation and will utilise the local electrical infrastructure to connect to the grid.

The development will comprise up to 18 containers, each containing rechargeable battery units, together with associated development, including associated electricity substation and transformer compound, security fencing, CCTV and lightning mast. 

The equipment will be controlled remotely and access to the site will be for construction and maintenance only.

This development is close to the existing Castlereagh substation and will utilise the electrical infrastructure to connect to the grid.




Maintenance Updates

The Castlereagh battery storage facility is now operational - with some outstanding works on and off site still to be completed.

Landscaping and planting will resume in the coming weeks, depending on the weather.  This will include the re-seeding of the area of bare earth at the site entrance.

We will continue to post maintenance updates here.


Battery Storage: How it works:

Battery storage is an important enabling technology for Northern Ireland’s energy transition.

Renewable energy is now supplying more than 40% our annual electricity needs.   Battery storage facilities like Castlereagh will help match intermittent generation from renewable energy sources, such as wind and solar, with the peaks and troughs of real time electricity demand. 

The facility will absorb and store electricity when a surplus is available and release it back into the system when electricity demand exceeds supply. 

If you have any questions about the Castlereagh Battery Storage facility, please contact:

  • Rosy Billingham – Energia Renewables Community Liaison Officer (CLO)
  • Email
  • Telephone 028 90 685992

Castlereagh Battery Storage Development Location Map

54.56168073501254, -5.868532442093411