Energy and Emissions Management
Improving our energy efficiency and reducing greenhouse gas (GHG) emissions not only reduces climate related risks to the broader environment, it brings inherent cost advantages. We recognize that our activities result in GHG emissions, from the mobile equipment required to operate a mine, for example, and indirectly from off-site generated electric power that we purchase to supply our operations. We make efforts to decrease our energy consumption and minimize GHG emissions throughout our operations.
Energy specialists have been engaged to assess opportunities for savings and a number of projects are being implemented across New Gold sites. However, while our systems are still building baseline data, emission reduction data has thus far not been collected for many of these initiatives. We aim to improve our measurement capabilities and ensure we have complete baseline data, with a view to identifying and quantifying viable energy alternatives to reduce our carbon footprint.
For the purposes of this report, carbon dioxide (CO2) emissions generated by mobile equipment are calculated from diesel fuel and gasoline consumption using the World Resources Institute and the World Business Council for Sustainable Development Greenhouse Gas Protocol for Direct Emissions (Scope 1 Emissions), available at www.ghgprotocol.org. Emissions from diesel consumption reported here include the greenhouse gas component of fuel oil used in ammonium nitrate fuel oil explosives. The CO2 generated indirectly from purchased energy is calculated using the Greenhouse Gas Protocol for Electricity Purchase (Scope 2 Emissions).
Fuel Consumption by Major Sources
|Diesel Consumption (000s litres)||21,279||32,989||42,598||50,215||55,632||52,584|
|Gasoline Consumption (000s litres)||211||215||587||596||1,050||809|
|Propane (000s litres) (includes LP)||Not reported||Not reported||1,578||1,285||1,452||1,310|
|Natural Gas (000 litres)||Not reported||Not reported||Not reported||Not reported||Not reported||1.26|
Indirect Energy Consumption
|Power Purchased (MWhs)||108,313||107,241||120,656||140,875||204,427||251,1181|
While we reduced the consumption of diesel, propane and gasoline, we significantly increased the consumption of electric power. This is due to the first year of full production at New Afton and increased power required for ventilation systems at Peak.
In 2013, the total direct energy consumed across the company was 3,004,144 GJ. This includes 2,033,945 GJ from diesel, 28,040 GJ from gasoline, 33,443 GJ from propane, 4,691 GJ from natural gas and 904,025 GJ from electricity. New Gold does not produce or sell energy.
Greenhouse Gas Emissions and Efficiency
|Emissions, as tonnes of CO2-e1,2||2010||2011||2012||2013|
|Efficiency: Total emissions per 1,000 tonnes of ore processed, as Tonnes of CO2-E4||8.0||7.1||7.0||7.9|
The GHG emission efficiency has decreased in 2013 to levels similar to 2010, following two years of increased efficiency. The increase in 2013 is due to an increase in use of electric power and natural gas.