Alvance British Aluminium is currently undertaking a significant programme of maintenance and investment at Lochaber Power Station this summer, helping to ensure the long-term reliability of the renewable energy source that powers aluminium production at the Lochaber Smelter.

The Power Station plays a vital role in our operation, generating hydroelectric power that supports the production of some of the world’s low-carbon primary aluminium. Maintaining the station and its equipment is essential to ensuring a safe, efficient and dependable supply of electricity for years to come.

As part of the 2026 maintenance programme all five of our Generators are undergoing a comprehensive inspection and refurbishment. The work has been carefully planned to use a Failure Mode and Effects Analysis (FMEA) process carried out in partnership with engineering specialists Trillium. This approach helps identify potential risks before they occur, allowing maintenance activities to be targeted where they will deliver the greatest benefit.

The electrical maintenance work on Generator L1 will be undertaken by Andritz, the original equipment manufacturer responsible for the generator’s design and construction. Their specialist knowledge will help ensure the equipment continues to operate safely and efficiently while extending its operational lifespan.

This maintenance programme is an important part of Alvance British Aluminium’s ongoing investment in the future of the Lochaber site. Alongside supporting reliable power generation for low-carbon primary aluminium production, the work will also help maintain the power station’s ability to provide balancing reserve services to the national electricity network. These services help support grid stability during periods of changing demand while making the most effective use of water stored in our hydro system.

Turbine Runner set up for 3D Scanning

Runner removed for Guide Vane Inspections and coating repairs

Further Investment in Grid Reliability

Alongside the maintenance works, Lochaber Power Station will also benefit from a major upgrade to its electrical control systems.

Andritz will install two additional Automatic Voltage Regulators (AVRs) as part of a three-year investment programme worth £400,000. The first AVR was successfully installed in 2025, with the remaining units being added over the coming years.

Automatic Voltage Regulators play a key role in controlling generator output and maintaining voltage levels, helping the station operate in line with the National Grid Code requirements. Once completed, the project will further strengthen the station’s operational performance, improve grid integration and support the continued delivery of reliable renewable energy for Lochaber Smelter.

While much of this work takes place behind the scenes, it represents the continued commitment of our teams and specialist partners to maintaining the high standards so that Lochaber continues to play a vital role in the UK’s industrial and energy future.

Lochaber Powerhouse