Emission related to target energy are emissions which result from the conversion of primary energy (energy sources such as coal, natural gas or biomass) to target energy divided by the energy produced during the same time period and under the same operating conditions. Emissions related to target energy are plane-specific emission which have to be determined from measurements or from emission data of Part 1 of this guidelines VDI 4660 and additional measurements of power or additional efficiency data. No upstream or downstream energy-conversion chains are taken into account in this guideline.