Coire Glas is a landmark pumped storage hydro project planned for the Great Glen, offering a crucial long-duration energy storage solution for Scotland’s renewable future. With a proposed capacity of up to 30 gigawatt hours, it'll provide rapid response flexibility, strengthen grid resilience, and enable greater integration of wind and other renewables across the UK energy system.
Finer details
Coire Glas will deliver large-scale pumped storage hydro capacity, enabling long-duration energy storage, grid balancing, and rapid response capabilities essential for a renewable-powered electricity system.
This is a major multi-billion-pound investment. The development will represent one of the largest energy infrastructure investments of its type in the UK.
Coire Glas is progressing through detailed design and stakeholder engagement. The project has completed extensive technical assessments and is preparing for final investment decisions, subject to market and regulatory conditions.
A leading developer of low-carbon infrastructure, SSE Renewables has a proven track record in delivering major hydro and wind projects across Scotland. The company is advancing Coire Glas as a nationally significant asset for energy security and decarbonisation.
Pumped storage hydro provides large-scale, long-duration energy storage. Coire Glas will pump water from Loch Lochy to a high-altitude reservoir and release it through turbines during peak demand, offering fast, flexible and reliable system support.
Coire Glas presents a rare opportunity to support one of the UK’s most significant energy storage projects. With up to 30GWh of storage capacity, it will enable the full potential of Scotland’s renewable generation by providing secure, flexible power and reducing system costs.
The development offers long-term economic value, major supply chain prospects, and a critical role in the shift to a resilient, low-carbon energy system.
Partners
Local authority stakeholder supporting planning, development coordination, and community engagement across the Great Glen region.
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