Energy and Emissions Management
Improving our energy efficiency not only benefits the environment, it brings inherent cost advantages. We recognize that our activities result in the emission of greenhouse gases (GHGs), from the mobile equipment required to operate a mine, for example, and from thermally generated electric power that we purchase to supply our operations. We make efforts in minimizing GHG emissions throughout our operations, from our ongoing efforts to reduce energy consumption, to our active reclamation of land.
Significant efforts towards reducing energy consumption and increasing energy efficiency in 2012 occurred at New Afton, where a new Energy Management System (controlled by an innovative Energy Management Information System) was implemented in 2012. The objective is to achieve ISO 50001 compliance at the site by the end of 2013.
Energy specialists have been engaged to assess opportunities for savings and a number of projects are being implemented across New Gold sites. However, emission reduction data has thus far not been collected for many of these initiatives. We aim to improve our measurement capabilities and build a database of GHGs, with a view to identifying viable energy alternatives to reduce our carbon footprint.
For the purposes of this report, 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).
Direct Energy Consumption by Major Sources
|Diesel Consumption (000s litres)||55,632||50,215||42,598||32,989||21,279|
|Gasoline Consumption (000s litres)||1,050||596||587||215||211|
|Propane (tonnes) (includes LP)||741||656||805||Not reported||Not reported|
|Explosives (tonnes)||13,878||14,698||10,836||Not reported||Not reported|
While we strive to improve energy efficiency, our energy use grows along with our gold production. The increase in diesel and gasoline use in 2012 is due to full-year activity reporting from Blackwater and the start of production at New Afton.
Indirect Energy Consumption
|Power Purchased (MWhs)||204,427||140,875||120,656||107,241||108,313|
Start of production at New Afton increased our electrical consumption, as did the greater depth of underground mining at Peak Mines.
The significant increase in power use and associated emissions in 2012 is due to increased depth of underground mining activity at Peak Mines and the start of production at New Afton in June 2012. However, our greenhouse gas emissions efficiency (total emissions per ore processed, as tonnes of CO2 equivalent) has improved by over 10% in the last three years.
The total emissions per ore processed, as tonnes of CO2 equivalent has improved by over 10% in the last three years, from 8 tonnes of CO2 equivalent per 1,000 tonnes of ore processed in 2010 to 7 tonnes in 2012.
Greenhouse Gas Emissions and Efficiency
|Emissions, as tonnes of CO21||2012||2011||2010|
|Total Emissions per Ore Processed, as Tonnes of CO2-e||7.0||7.1||8.0|
Our calculated greenhouse gas emissions efficiency (total emissions per 1,000 tonnes ore processed, as tonnes of CO2 equivalent) has slightly improved in the last three years, from 8 tonnes of CO2 equivalent per 1,000 tonnes of ore processed in 2010 to 7 tonnes of CO2 equivalent per 1,000 tonnes of ore processed in 2012.Emissions, as tonnes of CO2-e per 1,000 tonnes of ore processed2
1 Carbon dioxide equivalent (CO2-e) emissions reported here may not be consistent with quantities reported by specific sites, since these are guided by regulations within the jurisdictions where we operate and according to their stipulated requirements and protocols.
2 Carbon dioxide equivalent (CO2-e) emissions generated by mobile equipment are calculated from diesel fuel and gasoline consumption using the World Resources Institute (WRI) and the World Business Council for Sustainable Development (WBCSD) Greenhouse Gas protocol for Direct Emissions (Scope 1 Emissions).