Methodology
uncertainty:
Energy data have been traditionally compiled by
Eurostat through the annual Joint Questionnaires, shared by Eurostat and the
International Energy Agency, following a well-established and harmonised
methodology. Methodological information on the annual Joint Questionnaires and
data compilation can be found in Eurostat's web page for metadata on energy
statistics. http://europa.eu.int/estatref/info/sdds/en/sirene/energy_sm1.htm.
Emissions: Officially reported data following
agreed procedures. E.g. CO2 data are based upon annual submissions
under the UNFCCC.
Data
sets uncertainty:
For energy related greenhouse gas emissions the
results suggest uncertainties between ± 1 % (stationary combustion) and ± 11 %
(fugitive emissions). For public electricity and heat production specifically,
which is the focus of the indicator, the uncertainty is estimated to be ± 3 %.
For the new Member
States and some other EEA
countries, uncertainties are assumed to be higher than for the EU-15 Member
States because of data gaps.
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