Copenhagen Infrastructure Partners invests €270 million in Scottish battery project

Copenhagen Infrastructure Partners (CIP) has reached a final investment decision to develop Kilmarnock South, a 350 MW/1400 MWh lithium-ion battery energy storage system (BESS) in south Ayrshire, Scotland. The project involves an investment of approximately €270 million.

Construction is currently underway, with commercial operations expected to begin in the first quarter of 2028. As a four-hour duration asset, Kilmarnock South will be the longest-duration battery in CIP’s UK portfolio. The facility is designed to store surplus Scottish wind power and release it to the grid during periods of high demand or low network capacity.

This marks CIP’s fourth investment in transmission-connected BESS projects in Scotland, joining the Coalburn 1, Coalburn 2, and Devilla projects. Once all four Scottish projects are fully commissioned, they will provide a total energy storage capacity of 4.4 GWh, representing nearly one-third of Great Britain’s current operational BESS capacity.