Battery Energy Storage Unit - Shannonbridge

Contract Duration

14 Months

Contract Value



Hanwha Energy Corporation



Civil / Structural Engineer

Malachy Walsh and Partners

Services Engineer

Enerjec Ltd

Quantity Surveyor

Jennings O'Donovan Engineers


The Shannonbridge 100MW BESS Facility has officially reached energization.
The new BESS plant will be in keeping with the heritage and tradition of power generation in the area, albeit with a modern technology, reflecting the evolution of the power industry through the years.

The BESS project utilises high power batteries to provide system services to suit the Irish Power System need, under the DS3 System Service Programme. The BESS will provide system services to the Power System, which are required by the system operator to enhance the management of the transmission grid, ultimately increasing the stability and improving the reliability of the electricity supply to consumers. The facility will facilitate battery storage of energy from the electrical grid to provide a system reserve and to enable the supply of stored electrical energy back into the grid at appropriate times to smooth power fluctuations.

Construction involved the installation of 40 No. MVPS and Battery Containers, completion of the IPP Building and the 220kV cable sealing interface.

We are delighted to have managed the construction and energisation of this highly effective and efficient source of system services to the power system, offering high availability with minimal down time for maintenance outages. The unit will be one of the largest operating battery storage facilities on the Island of Ireland and one of the largest portfolios in Europe. While this is one of the first battery storage projects of significant scale in Ireland, a recent IWEA (Irish Wind Energy Association) report estimates that the country could require a total battery capacity of 1,700MW of batteries by 2030 as part of the Islands drive to achieve a 70% renewable target by 2030.

The site contains a series of Battery Energy Storage System (BESS) units and control buildings, together with associated site works including grid connection installation, access roadways, footpaths, paving, drainage, and landscaping.