The foregoing data pertaining to what is known as the Carbon were calculated on the basis of the methodology entitled Green House Gas Protocol, A Corporate Accounting and Reporting Standard, Revised Edition WBCSD (World Business Council for Sustainable Development) – see: www.ghgprotocol.org
The reporting scope of these CO2 emissions pertains to direct emissions from burning fuel in its own sources of energy and cars (according to Scope 1 GHG Protocol), indirect emissions from burning fuel to generate the electricity and heat purchased by the organization (according to Scope 2 GHG Protocol) and other indirect emissions resulting from burning fuel in means of transportations not controlled by the organization, i.e. taxis, aircraft, trains and buses (according to Scope 3 GHG Protocol); The data pertaining to emission ratios come from the IPCC 2006 Guidelines for National Greenhouse Gas Inventories, Guidelines to DEFRA’s/ DECC’s Greenhouse Gas Conversion Factors/UK Government Conversion Factors for company reporting, domestic environmental agencies, i.e. kobize.pl and kape.gov.pl and electricity suppliers.
Data on greenhouse gas emissions may be stated as CO2 or CO2e emissions (where CO2e is the CO2 equivalent when we include carbon dioxide emissions resulting from direct emissions from the combustion of fuel and indirect emissions – from the consumption of electricity and heat consumption and business travel, plus the emission of other greenhouse gases, i.e. methane (CH4) and dinitrogen monoxide (N2O) emitted in trace amounts in the above combustion processes).
Although greenhouse gases are emitted in small quantities compared to CO2 in these combustion processes, their impact on global warming (GWP, or the Global Warming Potential) is relatively greater per unit than that of CO2. CH4 has the GWP value of 28, while the GWP value of N2O is 265.
This is why the CO2e value, which takes into account the global warming impact of not only CO2 but also other greenhouse gases, is slightly higher than the carbon dioxide CO2 emissions only.
In the 2020 report, the GWP factors were updated in line with the most recent European Commission data. Some other emission measures for fuels were also updated based on the current national table of calorific values and emission measures to be used in 2020.