Kilmarnock – October 02, 2026 -- Copenhagen Infrastructure Partners (CIP) has taken a Financial Investment Decision for Kilmarnock South, a 350 MW/1,400 MWh lithium-ion battery energy storage system in south Ayrshire, Scotland, committing over EUR 270 million (GBP 232 million) through its fourth flagship fund, Copenhagen Infrastructure IV.
Construction begins with commercial operations targeted for Q1 2028
Kilmarnock South is now under construction and is scheduled to reach commercial operations in the first quarter of 2028. At four hours of duration, it will become the longest-duration asset in CIP's UK storage portfolio once operational, designed to store surplus Scottish wind power and release it to the grid during periods of network capacity.
Project is CIP's fourth transmission-connected battery investment in Scotland
Kilmarnock South joins Coalburn 1, which reached commercial operations in August 2026, alongside Coalburn 2 and Devilla, in CIP's Scottish battery storage portfolio. Combined, the four projects will deliver 1.85 GW of power capacity and 4.4 GWh of energy storage once fully commissioned -- equivalent to almost a third of Great Britain's current operational battery storage capacity.
Portfolio capacity matches demand of 5.5 million households
CIP's 4.4 GWh Scottish storage fleet, spanning Coalburn 1, Coalburn 2, Devilla and Kilmarnock South, is equivalent to the electricity demand of more than 5.5 million households over a two-hour period. Nischal Agarwal, Partner at CIP, said well-sited battery projects provide power system flexibility that captures the benefits of low-cost renewables while helping stabilise consumer energy bills.
UK minister links project to reduced wasted renewable power
UK Energy Minister Michael Shanks noted that Coalburn now hosts one of Europe's largest batteries on a former coal mine site, while the new GBP 232 million Kilmarnock South facility will store additional Scottish wind power, reducing curtailed renewable generation and supporting long-term energy security.
Noriker Power and Shell Energy Europe secure development and revenue roles
Kilmarnock South was developed by UK-based Noriker Power, which will continue managing the construction phase. The project holds an optimisation agreement with Shell Energy Europe Ltd, providing long-term contracted revenue for the asset.