Independence Group Sustainability Report 2019

MANAGING OUR ENERGY USE AND EMISSIONS Mining is energy intensive. We release GHG emissions through the combustion of fuels to power our mining operation and in processes used to produce metal concentrates. We also contribute to GHG emissions indirectly through both the transportation and use of our products. For example, approximately 70 per cent of all nickel goes into the production of stainless steel and 26 per cent goes into the production of alloys, castings and plating. At present, only about 3 per cent goes into batteries. Energy consumption can vary within the life of a particular mine and between individual operations depending on factors such as the hardness of the rock being mined and beneficiated, and the mine depth. More energy is consumed when mining harder rock, and a deeper mine requires more energy to haul ore and waste rock to the surface. Our electricity generation contributes more than 76 per cent of our GHG emissions and provides our greatest opportunity to reduce our footprint. IGO’s energy needs are currently met through the burning of diesel, most of which goes into the production of electricity in a dedicated diesel fuelled power station and, to a lesser extent, in diesel combustion engines used in mine mobile plant such as trucks and earthmoving machinery. Using more renewables is an important way for us to reduce our emissions and our reliance on diesel. A 5.7MW photovoltaic solar power generation system is currently being constructed at our Nova Operation. Once complete in FY20, this solar farm project is expected to decrease our diesel usage by approximately 3 million litres per annum or 5,219tCO 2 -e. We also release GHG through land clearing. In FY19 we cleared 386.5ha of woodland and this will result in the release of approximately 4,008t of carbon. During FY19 our energy consumption across all IGO managed operations was 1,386,454GJ, reflecting the full production rates achieved at the Nova Operation. This is a marginal increase from FY18. Our total Scope 1 and 2 GHG emissions for all IGO facilities was 74,093tCO 2 -e, producing predominantly by the consumption of diesel. GREENHOUSE GAS EMISSIONS (TONNES OF CO 2 EQUIVALENT) FY18 FY19 FY17 FY16 FY15 Scope 1 Scope 2 FY19 73,963 130 FY18 71,123 14,042 FY17 76,482 13,743 FY16 49,624 15,598 FY15 37,181 18,245 IGO SUSTAINABILITY REPORT 2019 — 53

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