The AES Kilroot Power Station – Battery Energy Storage System is a 10,000kW energy storage project located in Carrickfergus, Northern Ireland, UK.

The electro-chemical battery energy storage project uses lithium-ion as its storage technology. The project was announced in 2014 and was commissioned in 2015.


The AES Kilroot Power Station – Battery Energy Storage System was developed by AES Energy Storage. The project is owned by AES Kilroot Power (100%), a subsidiary of The AES.

The key application of the project is frequency regulation.

Contractors involved

AES Energy Storage, AES Kilroot Power and LG Chem have delivered the battery energy storage project.

Additional information

The Energy Storage System is funded by Innovate UK Energy Catalyst. The Advancion Array is the largest battery energy storage facility in the UK and Ireland, and is installed inside Kilroot coal-fired generation plant. The system is connected to the System Operator of Northern Ireland (SONI). The array uses more than 53,000 batteries, arranged in 136 separate nodes, and is the first step towards a planned 100 MW energy storage array adjacent to Kilroot.

About AES Energy Storage

AES Energy Storage LLC (AES Energy), a subsidiary of The AES Corp, is an energy service provider that offers commercial energy storage solutions. The company provides operation and maintenance, and planning and deployment services. Its planning and deployment services include facilities design and engineering, site development and preparation, geotechnical evaluation and permitting, interconnection engineering, bidding management, procurement and construction, critical system commissioning, facility commissioning, and project planning. AES Energy owns and operates power plants in the US. The company caters its services to the utilities, power markets, independent power producers, and renewable developers. AES Energy is headquartered in Arlington, Virginia, the US.


All publicly-announced energy storage projects included in this analysis are drawn from GlobalData’s Power IC. The information regarding the projects are sourced through secondary information sources such as country specific power players, company news and reports, statistical organisations, regulatory body, government planning reports and their publications and is further validated through primary from various stakeholders such as power utility companies, consultants, energy associations of respective countries, government bodies and professionals from leading players in the power sector.