Carbon dioxide emissions from natural gas combustion – country-specific emission factors for the Czech Republic

Abstract

Natural gas combustion comprises an important part of CO2 emissions in the Czech Republic. The Czech Republic used for estimation of CO2 emissions from natural gas combustion until 2012 submission the less accurate basic methodology which uses default emission factor (EF), which does not take into account the national conditions. In order to improve this situation a research of a national-specific approach to EF determination was performed. This paper represents results of this research which was aimed at development of EF not only for the last reported year but for the whole time series since 1990. The activity data and net calorific values are available in sufficient quality for the whole time series; however the data about molar composition of natural gas and other physical characteristics necessary for the development of country-specific EFs were available only for some period; the most valuable data were available since 2007. Development of the appropriate values of EFs for all reported years starting 1990 till present was based on the findings of relevant correlations of EF and net calorific value.