Client: BHP Billiton, Groote Eylandt Mining Company (GEMCO)
Location: Groote Eylandt, NT, Australia
Business Line: Mining, Manganese Ore
Project Savings: A$14.5m over 5 years
Breakeven: 4 years
Groote Eylandt is Aboriginal land that covers an area of approximately 2260 square kilometers, located in the Gulf of Carpentaria in the Northern Territory of Australia. The mining operation at Groote Eylandt Mining Company (GEMCO), which was commissioned in 1965, extracts high grade manganese ore using open-cut, strip mining methods. After the ore has been mined, the areas are backfilled with overburden, topsoil is added and environmental rehabilitation takes place using native grasses and trees.
Computer modelling was undertaken to determine an ‘As is’ case and a Cost Effective Best Practice case were prepared to identify opportunities to reduce energy costs within the Alyangula township over 5 years. By implementing the capital and change management opportunities identified, annual energy use was reduced from 13.4GWh to 7GWh, a saving of 48%.
Energy efficiency measures and system transformation delivered: