Norwegian aluminum giant Hydro has initiated the use of natural gas for alumina production at its Alunorte refinery in Pará state, Brazil, marking a significant shift aimed at reducing carbon emissions. This transition follows a $240 million investment to replace fuel oil, which is expected to lower the refinery's carbon emissions by 30%. Hydro's investment will eventually see six steam generation boilers and all calciners at the facility running on natural gas, reducing annual carbon emissions by 700,000 tons.
The project involves extensive upgrades to Alunorte's operations, focusing on automation and safety. Hydro ceased the use of fuel oil for steam production at the refinery in July, marking a milestone in the company's sustainability efforts.
Pará state received its first natural gas supplies via the 160,000m³ Energos Celsius floating storage and regasification unit earlier this year, with Hydro set to become the largest consumer of this resource. Additionally, the switch to natural gas fulfills a commitment tied to a tax exemption agreement with the Pará state government.
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