Energy and GHG Emissions Management
It takes a lot of energy to break, grind and transport vast amounts of rock. Our activities are energy intensive and result in greenhouse gas (GHG) emissions, from the mobile equipment required to operate a mine to the off-site generated electric power that we purchase to supply our operations. Improving our energy efficiency and reducing GHG emissions not only lessens climate-related risks to the broader environment, but also brings inherent cost advantages.
We continue working on implementation of the Towards Sustainable Mining (TSM) Protocol as well as the Energy and GHG Management system across all operations. Energy champions have been engaged to assess opportunities for savings and a number of projects are being implemented across New Gold sites. One of these efforts is an innovative energy management system implemented at New Afton in 2013, leading to an ISO 50001 certification in 2014. New Afton is the first mine in Canada to achieve certification against this international standard and remains the only mine in North America to maintain it through 2016. We have extended the learning experiences to our other operations and in 2016 Mesquite started working towards the implementation of the standard.
In 2015, New Gold started a process towards an Energy Management Strategy. In 2016 we continued to lay the foundation for the development of the Strategy. Implementation of the New Gold Energy Strategy is expected to drive energy management and efficiency across our operations and embed energy savings into our culture, with benefits for our competitiveness and for the environment.
New Gold reports energy and greenhouse data publicly to the Mining Association of Canada and to the Carbon Disclosure Project. All of our sites continue to work on the development of long- and short-term efficiency targets in an effort to improve energy savings over time.
New Gold Energy Consumption – Across Sites
Across New Gold, diesel is by far the most significant portion of our energy consumption, used primarily as fuel for mobile fleet operations, followed by purchased electricity for mill operations. Propane, gasoline and natural gas represent a relatively small portion of the energy consumed by our operations and projects. Natural gas is used at New Afton to heat the underground workings during winter months.
Natural gas usage increased at New Afton as the active underground works has expanded. We use a heating system and Ventilation on Demand, which ensures that only those areas that are being occupied by workers are ventilated and heated.
Fuel Consumption by Major Sources – All sites
|Diesel consumption (000s litres)||54,351||60,659||69,905|
|Gasoline consumption (000s litres)||678||1,248||2,329|
|Propane (000s litres) (includes LP)||1,019||742||1,077|
|Natural gas (000s litres)||1,888,374||1,393,527||1,484,878|
Electric Power Consumption – Operations Only
|Power purchased (MWhs)||329,487||365,429||370,2581|
Greenhouse Gas Emissions – All sites
|Emissions (000s of tonnes of CO2-e)||2014||2015||2016|
Greenhouse Gas/Ore Processed Ratio
Efficiency: Total Emissions1,2 per Ore Processed (000s tonnes), as Tonnes of CO2-e