Memòria de Sostenibilitat 2017


In accordance with the practical guides on calculating greenhouse gas (GHG) emissions, and using the emissions calculators published by the Catalan Office for Climate Change, we can draft the inventory of GHG emissions from our work. Specifically, we take into account emissions from energy consumption, transport and management of municipal waste in those cases for which accountable values are available. By GHGs, we mean CO2 equivalents (CO2eq), which includes the six greenhouse gases listed in the Kyoto Protocol: carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O), hydrofluorocarbons (HFC), perfluorocarbons (PFC), and sulphur hexafluoride (SF6). 

Greenhouse gas (GHG) emissions

GHG emissions from B:SM activity, as stated in the aforementioned guide, can be classified by whether they are direct or indirect emissions. 


  • Direct emissions are emissions from our own sources, over which we have control. 
  • Indirect emissions are the consequence of the work we carry out, but they take place at sources which we do not own or have no control.  

World-wide pact of the United Nations

Goal 13: Take urgent action to combat climate change and its impacts

Changes to CO2eq emissions

  • CO2eq emissions by origin

  • CO2eq emissions by scope

Direct emissions of GHG – Scope 1

This includes direct emissions from sources that B:SM owns or controls. This group includes emissions from fuel combustion (natural gas and transport fuel from our own fleet).

Direct GHG emissions by source (tons of CO2eq)

Indirect emissions of GHG – Scope 2

This comprises emissions from electricity consumption. Electricity emissions are physically produced at the facility where the electricity is generated. In Catalonia, the electricity we consume, (other than if we generate it ourselves), comes from the peninsular power grid, and it is not possible to distinguish exactly in which power plant our electricity has been generated. Therefore, the data used to calculate the energy mix are those corresponding to the peninsular power grid.

Indirect GHG emissions by source (tons of CO2eq)

Other emissions of GHG – Scope 3

Scope 3 includes all other indirect emissions that are a consequence of our work, but they come from sources we do not own or control: waste management and water consumption. 

We estimate the emissions associated with the management of municipal waste (separated domestic waste: paper and cardboard, glass containers, lightweight plastic packaging, separated organic matter and other separated waste). 

We also estimate the emissions connected to mains water consumption.

Other GHG emissions by source (tons of CO2eq)


GRI References: G4-EN15, G4-EN16

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