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CO₂ Emissions

For many years we have been committed to a series of actions for the control and reduction of direct and indirect emissions of CO2 at the airport and deriving from airport management activities. 

Carbon dioxide emissions are subdivided as follows:

Scope 1 -  Direct emissions associated with sources owned or controlled by the group’s companies, such as fuels used for heating and operational means necessary for airport activities.

Scope 2 - Indirect emissions associated with the generation of electricity or thermal energy acquired and consumed by the group’s companies.

Scope 3 - Other indirect emissions deriving from the activities of the group’s companies but produced by sources not belonging or not controlled by the companies themselves, such as personnel work trips and home-work travel.

In 2009 ACI Europe (Airport Council International), in order to promote the contribution of the airports towards the fight against climate change, launched an initiative called Airport Carbon Accreditation: the project required the introduction of a series of actions for the control and reduction of direct and indirect CO2 emissions by airport managers, operators, aircraft and by all those working within the airport system.

The Airport Carbon Accreditation established four possible levels for accreditation:

  • Mapping – checking of emissions under the direct control of the airport manager (scope 1 and 2);
  • Reduction - creation of an emission reduction plan (scope 1 and 2);
  • Optimization – calculation of the emissions produced by the airport stakeholders and their involvement in the reduction plans (scope 3);
  • Neutrality - the achievement of Carbon Neutrality in terms of emissions under the direct control of the airport operator (Scopes 1 and 2), with the purchase of offsets.

In 2017, SEA confirmed its European leadership positioning for both Linate and Malpensa airports within the 3+ neutrality grouping, together with 29 other airports, of which 2 Italian (Rome and Venice), representing 20% of European traffic.

The trend in Scope 1 emissions in 2017 is substantially in line with previous years. A significant decrease in Scope 2 emissions was brought about compared to 2016, in particular in relation to Malpensa Airport (-56%), due to a lower procurement of electricity during the year.

The reporting standard used (GRI sustainability reporting standards 2016) establishes two different calculation methods for Scope 2 emissions: "Location-based" and "Market-based".

The “Location-based” method requires the use of average national emission factors related to the specific energy mix used to produce electricity (the coefficient of the emission used for Italy is 406,309 gCO2/kWh, Source: Emission factor for grid electricity @ Airport Carbon Accreditation Guidance Document Issue 9 v2: August 2015). The “Market-based” approach uses emission factors based on the contractual agreement for the provision of electricity. Given the absence of specific electricity agreements between the companies of the Group and the suppliers (e.g. a Guarantee of origin purchase), for this calculation an emission factor related to the national “residual mix” was used, which for Italy is 465.11 gCO2/kWh – Source:  European Residual Mixes 2016, 2016).

CO2 EMISSIONS of the SEA Group (tCO2)

Scope  1(1) 128,878 66,566 121,608 62,963 117,675 58,580
Scope  2 Location-based 142 66 322 89 116 90
Scope  2 Market-based 163 76 369 101 133 103
Scope  3 2,298 854 2,369 876 2,343 889

(1) Note that, for the year 2017, natural gas and heating oil emissions factors have been updated [Sources: Table of national standard parameters: coefficients used for the inventory of CO2 emissions in the UNFCCC national inventory (average values for years 2015-2017). This data can be used for the calculation of emissions from January 1, 2017 to December 31, 2017]. Electricity emission factor used: Emission factor for grid electricity @ Airport Carbon Accreditation Guidance Document. Issue 9 v2: August 2015].

2015 and 2016 data does not include SEA Prime

Source: SEA

CO2 EMISSIONS of SEA Group per traffic unit (kgCO2/traffic unit)

Scope 1 * 4.64 6.92 5.22 4.93 6.45 5.36 5.02 6.00 5.31
Scope 2 Location-based 0.01 0.01 0.01 0.01 0.01 0.01 0.00 0.01 0.01
Scope 3 0.08 0.09 0.08 0.10 0.09 0.09 0.10 0.09 0.10
Scope 1 + Scope 2 Location-based * 4.64 6.92 5.23 4.94 6.46 5.37 5.02 6.01 5.31

Note: per traffic unit means the number of passengers plus goods transported (where 1 pax is equivalent to 100 kg of goods).
*2015 and 2016 data does not include SEA Prime.