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108b Harris Road, East Tamaki, 2013

Steelmaking uses a lot of energy and managing this efficiently is an important part of New Zealand Steel's operation. New Zealand Steel is committed to commercially and environmentally responsible energy management and the promotion of energy efficiency in all of its operations. New Zealand Steel has taken steps to promote energy efficiency. It was a founding member of the national Energy Wise Companies Campaign and met targets specified in an early voluntary agreement with the NZ Government to reduce carbon dioxide emissions. Below are the energy resources New Zealand Steel uses.

Integrated acoustic design, the layout of the plant, silenced equipment and thermal insulation all contribute to noise levels below local Council standards. Very high noise processes are carried out in special acoustic structures.

Without recycling the Glenbrook operation would require a massive 1 million tonnes of fresh water each day, with a similar volume being discharged into adjacent waterways. However, of the total volume of water in the steel mill's water circuits, less than 2% is discharged to the Waiuku Estuary each day.