Case study Boosting energy efficiency at aluminium smelters Sohar Aluminium Company Customer need Sohar Aluminium houses one of the world’s largest aluminium smelter potlines. Each year 3 75,000 tons of aluminium are produced here. The smelting process created high levels of harmonics. It was imperative to keep these under control to adhere to the grid codes and be connected to the Oman power grid without any compliance issues. ABB solution When Sohar Aluminium decided to interconnect to the Oman Grid, both for import, export and stability reasons, it became necessary to install harmonic filters to remove harmonics that would otherwise disturb other customers on the grid. ABB delivered a turnkey solution, including a study of the harmonics in the plant as well as the design, su

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