UK’s Operational Battery Energy Storage Capacity Surpasses 7GWh, with Sustained High Growth Ahead

Copenhagen Infrastructure Partners (CIP), the Danish-headquartered investment firm, has announced the official commercial operation of its 500MW/1GWh Coalburn 1 battery energy storage project, located in South Lanarkshire, Scotland. Developed on the site of a former coal mine, the lithium-ion battery facility was delivered through CIP’s flagship fund, Copenhagen Infrastructure IV, in partnership with UK-based renewable energy developer Alcemi.

The project’s equipment was supplied by e-STORAGE, the energy storage subsidiary of Canadian Solar, under a contract encompassing a total of 1,170MWh of SolBank battery storage units, along with system integration, commissioning, and long-term operation and maintenance services.

Commenting on the milestone, CIP Partner Nischal Agarwal stated that the project will enhance the flexibility and resilience of the UK power system, facilitate greater integration of renewable energy, and help reduce end-user electricity costs.

Coalburn 1 is one of three battery storage projects developed by CIP in Scotland. The other two are the co-located expansion project Coalburn 2 (500MW) and the Devilla battery storage project (500MW) near Fife. Together, the three projects represent a total capacity of 1.5GW/3GWh. Both Coalburn 2 and Devilla reached final investment decision (FID) in January 2026, with construction expected to commence in 2027.

Prior to its commissioning, CIP agreed to divest a 50% ownership stake in Coalburn 1 to investment firm AXA IM Alts, marking the latter’s first entry into the UK energy storage sector. The transaction was executed through CIP’s Copenhagen Infrastructure V fund, which has raised over €12 billion (approximately $13.57 billion) for renewable energy investments across Europe, North America, and the Asia-Pacific region.

In terms of asset management, RES has been appointed to oversee daily operations, integrating the Coalburn battery storage project into its global O&M portfolio, which covers over 43GW of wind farms, solar parks, energy storage systems, and green hydrogen facilities worldwide.

Meanwhile, SSE Energy Markets has secured a ten-year optimisation agreement for the three Scottish storage projects. Additionally, CIP has separately entered into a 15-year capacity market agreement for Coalburn 1, providing a stable fixed-income stream beyond market-based trading revenues.

Grid Constraints and Connection Policy Reforms in Scotland Reshape Storage Investment Dynamics

Scotland boasts substantial onshore and offshore wind resources, yet grid transmission constraints frequently necessitate curtailment to prevent overloading. This tension has made the region a prime destination for battery storage developers, as storage systems can effectively capture curtailed energy and deliver grid balancing services.

CIP representatives have previously noted that the Scottish storage portfolio will significantly support the UK’s net-zero objectives while lowering consumer costs and enhancing energy security. Balancing mechanisms and intraday power trading are expected to be the primary revenue streams for the three projects.

Project economics are also being shaped by ongoing policy debates regarding grid access in the UK. As part of the Review of Electricity Market Arrangements (REMA), the government is considering introducing “non-firm grid access rights” for new storage projects, aimed at accelerating connection timelines. However, this would imply that new renewable generation could be curtailed without compensation. CIP views the overall risk of significant revenue loss from such policy changes as relatively low, given that storage assets are inherently operated to avoid constraints and tend to alleviate—rather than exacerbate—grid congestion. Nevertheless, the firm advocates for a phased transition coupled with transmission upgrades, rather than abrupt rule changes.

Since the large-scale deployment of storage systems in 2018/2019, the UK’s operational battery storage capacity has grown rapidly. According to Solar Media’s UK Battery Storage Project Database, the country’s total operational battery storage capacity now exceeds 7GWh, with substantial further demand anticipated.

Among the active suppliers in this market, Lingtech Battery—a China-based company specialising in customised mid- to small-scale energy storage systems for residential and commercial applications—has already completed over ten projects in the UK. Lingtech Battery looks forward to partnering with a wide range of UK-based stakeholders, including EPC contractors, business owners, installers, investors, end-users, and consultancy firms.

The company’s flagship residential battery offerings include capacities of 5kWh, 10kWh, 15kWh, 16kWh, 20kWh, 25kWh, 30kWh, 40kWh, and 50kWh. For commercial and industrial applications, Lingtech Battery provides a comprehensive portfolio, including 125kW/261kWh, 100kW/215kWh, 200kW/430kWh, 250kW/522kWh, 500kW/1,000kWh, 1,000kW/2,000kWh, 2MW/4MWh, 2.5MW/5MWh, 5MW/10MWh, and 10MW/20MWh systems. All these products are well-received in the UK market and represent Lingtech Battery’s core strengths.

With over 20 years of manufacturing experience in the industry, Lingtech Battery invites inquiries and collaboration opportunities. Please contact: info@lingtechsolar.com.