ESS Standard for Quality Reports Structure (ESQRS)
National statistical institute
|Contact organisation unit|
"Environmental and Energy Statistics" Department
|Contact person function|
|Contact mail address|
2 Panayot Volov St., 1038 Sofia
|Contact email address|
|Contact phone number|
+359 2 9857 761
|Contact fax number|
The table about the emissions of pollutants in the air contains information from the National Statistical Institute (NSI) and Executive Environmental Agency at the Ministry of Environment and Water. The emissions are estimated by using a balance method based on the indicators: consumed fuels, calorific value, quantity of produced output and invested raw materials, as well as emission factors applicable for the respective pollutants.
The classification used according EMEP/EEA guidebook 2019 of:
· sources of emissions;
· treatment facilities and measures to protect the atmosphere.
The statistical survey includes enterprises of all economic activities which operation is linked with the formation of emissions.
|Statistical concepts and definitions|
Concepts and definitions are used according to EMEP/EEA guidebook 2019.
Firms, enterprises, local units, which activity is directly or indirectly connected with the formation of emissions.
Economic subjects, which composition of activities includes:
Total for the country and some industrial regions.
1992 - 2019
Emissions are determined on the basis of data from:
· The official national inventories of air emissions under the Convention on Long-range Transboundary Air Pollution and the United Nations Framework Convention on Climate Change;
· Data from an annual specialized statistical survey;
· Data from energy sector statistics, and PRODCOM - statistics by product .
|Frequency of data collection|
The data are collected by questionnaires in Excel format, sent by e-mail. Data on emission sources are provided by all economic entities in the activity, which include: processes for electricity production (covered by the consumed fuels); processes in the production of other products (covered by consumed raw materials, manufactured products, etc.).
Comparing the data with those reported in the previous year concerning incorrect measure units and incorrect data by code on fuel of heating and industrial processes.
The emissions are estimated by using a balance method based on the indicators: consumed fuels, Sulphur contents, calorific value, quantity of produced output and invested raw materials, as well as emission factors applicable to the respective pollutants.
· European Statistics Code of Practice;
· A common framework for quality management in the National Statistical System.
Main users of survey's statistical information are the state and municipal entities, associations, companies and citizens.
Provides the required set of indicators for timely data reporting.
The data are collected by studying the main data set - the enterprises that form the significant part of the emissions.
|Data completeness - rate|
|Accuracy and reliability|
Overall accuracy is related to data quality. For this purpose, additional analyzes and checks of all economic units suspected of having incorrect units of measurement, indicators and others are performed.
|Sampling errors - indicators|
|Over-coverage - rate|
|Common units - proportion|
|Non response error|
|Unit non-response - rate|
|Item non-response - rate|
|Imputation - rate|
|Model assumption error|
|Data revision - policy|
Revision of the data is applied if necessary.
|Data revision - practice|
Revision of the data is applied if necessary.
|Data revision - average size|
|Timeliness and punctuality|
The data are published according to the terms laid down in the Release Calendar presenting the results of the statistical surveys carried out by the National Statistical Institute.
|Time lag - first results|
|Time lag - final results|
All publications are prepared timely, according to the Release Calendar presenting the results of the statistical surveys carried out by the National Statistical Institute.
|Punctuality - delivery and publication|
|Coherence and comparability|
|Comparability - geographical|
High degree of comparability of definitions and classifications between EU Member States in terms of statistical survey results.
|Asymmetry for mirror flows statistics - coefficient|
|Comparability - over time|
Time series are available since 1992.
|Length of comparable time series|
|Coherence - cross domain|
The data are coherented with statistics on the energy sector and agriculture.
|Coherence - sub annual and annual statistics|
|Coherence - National Accounts|
|Coherence - internal|
The data are coherented with statistics on the energy sector and PRODCOM - statistics by products.
|Accessibility and clarity|
· Electronic Publication "Environment";
· Statistical Yearbook;
· Statistical Reference Book;
· "Bulgaria" (brochure).
Data on Emissions of pollutants in the air are available to all users of the NSI website under the heading Environment: https://www.nsi.bg/en/node/5080, as well as in the online information system INFOSTAT, section Environment and energy, section Emissions of harmful substances in the atmosphere https://infostat.nsi.bg/infostat/pages/module.jsf?x_2=137.
|Data tables - consultations|
Anonymised individual data can be provide for scientific and research purposes, and for individual request according to the Rules for the provision of anonymised individual data for scientific and research purposes.
Information service on request, according to the Rules for the dissemination of statistical products and services in NSI.
|Metadata - consultations|
|Documentation on methodology|
EMEP / EEA air pollutant emission inventory guidebook 2019 of the European Environment Agency.
|Metadata completeness – rate|
|Cost and burden|
In order to reduce the burden on respondents data collected by electronic questionnaire.
|Confidentiality - policy|
· Law on Statistics;
· Regulation (EC) No 223/2009 on European statistics (recital 24 and Article 20(4)) of 11 March 2009 (OJ L 87, p. 164), stipulates the need to establish common principles and guidelines ensuring the confidentiality of data used for the production of European statistics and the access to those confidential data with due account for technical developments and the requirements of users in a democratic society.
|Confidentiality – data treatment|
Individual data are not published in accordance with article 25 of the Law on Statistics. The publishing of individual data can be performed only in accordance with article 26 of the same law.