Norsk Hydro Updates on Alunorte Gas Supply Disruptions and Financial Impact

Norsk Hydro has provided an update on the natural gas supply situation at its Alunorte alumina refinery. In August 2026, the refinery's supplier, CELBA, notified Alunorte of disruptions in natural gas availability. Since then, Alunorte has not received its contracted gas deliveries and has had to source gas at higher spot market prices. The company is also working on securing a long-term gas supply solution on competitive terms.

The financial and production impact for the third quarter of 2026 was reported in mid-August, with an estimated lost alumina production of 100,000 to 120,000 tonnes. The financial impact was projected to be between USD 75 to 100 million for the Bauxite & Alumina segment. For the fourth quarter of 2026, the cost impact due to the difference between contract prices and spot gas prices is estimated to be between USD 90-110 million.

Alunorte does not anticipate further interruptions in gas supply as a result of the current situation. The company continues to manage the issue in close collaboration with infrastructure owner CELBA and the relevant authorities. The financial impact remains uncertain and depends on gas prices, contractual developments, and the implementation of a long-term solution.

Additionally, Alunorte is pursuing legal remedies and other measures to protect its contractual rights and interests under the existing gas supply agreement. Investor contacts for further information include Gerd Aalborg Aas and Valentina Gandolfi.