Annual Energy Balances

Statistical Office of the Republic of Serbia (SORS)

Еnergy statistics unit

Sanja Radonjic

Head of Energy statistics unit

5 Milana Rakica Street, Belgrade, Serbia

sanja.radonjic@stat.gov.rs

+381 11 2411 852

+381 11 2411 852

Annual data on quantities of electricity, heat, coal, oil and oil derivatives, natural gas, renewable energy sources cover the entire energy sector from supply, through transformation to final consumption by sectors and type of fuel. Also, annual data on stocks, import and export for various energy products are included. The Statistical Office of the Republic of Serbia started to establish statistics of Annual Energy Balances in 2005 year. All data are presented in the form of energy balance. Data for each energy source are given in the natural unit of measure and also in TJ.

- National classification of economic activities - KD (2010) based on NACE Rev.2 classification (Statistical Classification of Economic Activities in the Europian Community).

-Definition of energy/energy commodities and energy flows given in the Regulation (EC) No 1099/2008, are applied.

Energy statistics data cover sectors of the economy which are involved in production, trade and energy consumption (energy sector, industrial sector, construction, transport, households, agriculture and others -commercial and public services).

Definitions, concepts and methodolgy for making energy balance are harmonized with established standards according to recommendations of the Regulation (EC) No 1099/2008. The definitions in Annex A and Annex B of Regulation (EU) No 1099/2008 have been fully applied. The relationship between products and energy flows, follows the standard principlies of the energy balances.

Reporting  units  for  the  annual  energy  balance  are  enterprises  (including  Public enterprises). Obsevational  units  are  enterprises engaged in the production, trade, transport, distribution of fuels, as well as kind of activity (KAU) of industrial and non-industrial enterprises which have production of energy.

The scope of the energy sector (producers, suppliers, traders, energy distributors)  is full; all those who produce energy /energy products and distributors are included. The consumption sector is monitored based on representative sample. Traders have a range of about 85 to 100%, depending on the type of energy source. Industrial enterprises, of which we collect data, achieve 85% of the value added in industry. Construction companies are included with 95%, while transport companies are covered with 90% and agricultural cooperatives 100%.

Republic of Serbia.

SORS has no available data for Kosovo and Metohia since 1999, therefore they are not included in the data for Republic of Serbia.

The Statistical Office of the Republic of Serbia started to establish statistics of Annual Energy Balances in 2005.

Not applicable.

For electricity - GWh, heat -TJ, natural gas - 000 Stm3 (standard m3) for other energy products measure unit is a tonnes. Data of quantity are converted into energy units, or in TJ to allow comparison of different types of fuel. The units are defined in Annex B of the Regulation (EU) No 1099/2008 of energy statistics.

The annual energy balances refer to the calendar year (January – December), they are compiled in the current year for the previous year.

The data of the Statistical Office of the Republic of Serbia are available on the web-site. The data are transmitted to Eurostat within the deadline set by Eurostat and also in the required form, via the eDAMIS application.

http://www.stat.gov.rs/en-US

Data confidentiality is stipulated by:

- Official Statistics Law (Official Gazette of RS, number 104/2009), Articles 44, 45, 46, 47, 48, and 49.

(www.stat.gov.rs/media/2322/zakon_o_statisticie.pdf)

- Rulebook on statistical data protection in the Statistical Office of the Republic of Serbia

(www.stat.gov.rs/media/2343/rulebook-on-statistical-data-protection-in-sors.doc ) 

- Guidelines on measures of data and information protection in the Statistical Office of the Republic of Serbia

(www.stat.gov.rs/media/2341/guidelines-on-measures-of-data-and-information-protection-in-the-sors.doc )

Data are diseminated on agregation level.

Calendar of releases is available at SORS website:

http://www.stat.gov.rs/en-US/calendar

The data are published annually, in the current for the previous year.

For Energy Statistics, press releases are not made.

The results are published on the web-site of the Statistical Office of the Republic of Serbia in the form of energy balances, as previous and final annual data. The final annual data is published in the form of a bulletin. The data are available also in data-base on the website.

Some energy data are also shown in other publications produced by the Statistical Office (Statistical Yearbook, Statistical Calendar).

http://stat.gov.rs/en-US/oblasti/energetika

The data are available on the website in PDF format since 2008, and also in the form of a database since 2010 year.

http://data.stat.gov.rs/?caller=04&languageCode=en-US

http://www.stat.gov.rs/en-US/oblasti/energetika

Annual data, in the form of completed international Annual Questionnaires, are transmitted via eDAMIS application to the Eurostat, and to the United Nations (UN).

Also, completed international Annual Questionnaires are submitted to the Ministry of Mining and Energy, which are forwarded them to the International Energy Agency (IEA).

Some data of the energy and energy commodities are published in the complex publications such as the Statistical Yearbook and the Statistical Calendar.

The Eurostat methodology (Regulation EU  No 1099/2008) is used to compile Annual Energy Balances. The concept, definition and grouping of energy and energy commodities, as well as statistical terminology, is fully harmonized with international recommendations for energy statistics (EU Regulation No 1099/2008).

In accordance with the Law on Official Statistics, based on the mission and vision of official statistics (Program for the Development of Official Statistics 2016-2020), taking into account other strategic documents, in particular the "Quality Policy" and referring to the European Statistics Code of Practice and the Fundamental Principles of the Official Statistics, quality components defined by the European Commission, have been taken over by:

•  Relevance
•  Accuracy
• Timeliness and respect for publication calendar
• Availability and comprehensibility
• Comparability and
• Coherence

The data for the Annual Energy Balance are provided by conducting the survey. The level of data accuracy is high. Requests for data on energy products and flows have been formulated in accordance with the recommendations of EU Regulation No 1099/2008. In this way, it is ensured that the annual energy balances data are internationally comparable. Checking annual data is carried out in several ways. If there is doubt in the quality of the data, the reporting units are contacted to provide the necessary clarifications or corrections.  Also, one of the methods of data checking is consistency of the time series and also energy transformation efficiency checks.

Annual energy balances are produced and published in order to providing harmonized, quality, reliable and relevant data on supply (production, transformation, import, export, stock), consumption (for transformation, own consumption), losses, final consumption of energy and energy commodities. Data is collected for:

- national institutions, administration, enterprises, professional associations and citizens,

- defining, implementing, monitoring and evaluating energy policy,

- Eurostat, International Energy Agency (IEA) and the United Nations (UN) and

- for the needs of other users.

On biennial basis (once in two years), by the means of web interview, implemented is the User Satisfaction Survey. The survey results are available at SORS website: http://www.stat.gov.rs/en-US/o-nama/sistem-upravljanja-kvalitetom.

Annual Energy Balances are available on web-site, as a bulletin form and in a table in PDF form. Data are available since 2008 year. In database data are available since 2010 year.

http://data.stat.gov.rs/?caller=04&languageCode=en-US

http://www.stat.gov.rs/en-US/oblasti/energetika

Energy data are collected and published based on a standardized internationally methodology (EUROSTAT-OECD / IEA-UN). Companies are obliged by law to submit data to the tatistical Office of the Republic of Serbia. The percentage of answers for the annual data is 100% and  the accuracy of data is good. The scope of the energy sector is full,  all those who produce energy / energy products and distributors are included. Traders have a range of about 85 to 100%, depending on the type of energy source. Industrial enterprises, of which we collect data, achieve 85% of the value added in industry. Construction companies are included with 95%, while transport companies are covered with 90% and agricultural cooperatives 100%.

Not applicable.

The scope of the energy sector is full,  all those who produce energy / energy products and distributors are included. Traders have a range of about 85 to 100%, depending on the type of energy source. Industrial enterprises, of which we collect data, achieve 85% of the value added in industry. Construction companies are included with 95%, while transport companies are covered with 90% and agricultural cooperatives 100%.

If the reporting units do not answer all the questions from the questionnaire, SORS contact them by telephone in order to provide the missing information. Also, if any disagreement in the data is established, we contact the reporting units by telephone or email. Data is controlled at the level of the reporting unit, and then at the summary level.

If an error is determined, the data is corrected at the level of the reporting unit, and then the sum is re-summarized in order to compile the energy balance of the energy source. Also, in cooperation with IT experts, we have established automation (software solutions) for calculating certain data.

Reporting units submit data to the SORS by March 15th, current for the previous year.

The annual data are published as preliminary data, as follows:

- On 6th October: balance of electricity, heat, coal balance, geothermal balance, wood fuel and biogas;

- On 15th October: as the previous data, the balance of oil and derivatives, natural gas, and the total balance for the Republic of Serbia in TJ are published.

The completed Annual questionnaires are submitted to Eurostat and International Energy Agency 11 months after the end of the reference year, as predicted for in Regulation (EU) No 1099/2008 on energy statistics (30.11.)

- Final data are published after completion of the verification with Eurostat and the International Energy Agency. The deadline for the final results is foreseen by the Calendar of Publications, the last working day in February, t + 2 (t is the reference year).

Previous data are published according to deadline which is given in the Regulation on defining the Plan of Official Statistics. Final data are published according to deadline which is given in the Regulation on defining the Plan of Official Statistics and Calendar of Publications.

http://www.stat.gov.rs/en-US/calendar  

Annual Energy Balances are made at the level of the Republic of Serbia.

The time series has been available since 2008 year (Since 2005 SORS successively has started to compile energy balances and deliver them to Eurostat. Data for electricity, heat and coal have been available since 2005; Since 2007 data are available for oil, oil derivatives and natural gas; data for fire wood and geothermal energy have been available since 2009; data for wood pellets, briquettes, charcoal and biogas have been available since 2013 year. Data are available in database since 2010 year.

Not applicable.

The level of consistency, coherence in full cooperation with the reporting units is checked in detail. Checks include consistency of time series, detection of causes of deviations, efficiency of energy transformation processes, and application of other control systems.

Not applicable.

After publication of the preliminary data, if it is necessary, the change is made in order to accurately present the final results. After submitting data to Eurostat and the control conducted by Eurostat, final data can be corrected. If data errors are detected in previous years, they are also corrected.

The scope of the energy sector is full,  all those who produce energy/energy products and distributors are included. Traders have a range of about 85 to 100%, depending on the type of energy source. Industrial enterprises, of which we collect data, achieve 85% of the value added in industry. Construction companies are included with 95%, while transport companies are covered with 90% and agricultural cooperatives 100%.The energy balances are included the production of all producers of primary energy and transformed forms of energy. Accordingly, there was also a full coverage of energy consumption in the energy sector.

In the regular annual surveys that are included: hydro power plants, solar photowoltaic, wind energy, CHP, thermal power plants, autoproducers district heating plants, oil and gas extraction, refineires, petrochemical refinery, blast furnace plant, coal mines, coal transformation, lubricants factory,  producers of renewable energy (gepthermal, fuel-wood, biogas). Import / export data are taken from Depatement of Foreign Trade Statistics in SORS – Customs data), except data for electricity (data provides Serbian Transmission System and Market Operator), crude oil (data provides NIS) and natural gas (data provides National gas company).

Data on the stocks at the beginning and end of the year SORS gets from energy producers, energy distributors, trade enterprises, industrial enterprises.

Showing losses depends on the type of energy (transfer, distribution or transport).

Final Non-energy consumption аre provided from industrial enterprises through a separate statistical survey.

Data on final consumption for energy purposes are based on the specific questionnaires created for energy producers, energy distributors, trade enterprises and industrial enterprises. In addition to, we used data collected by other Statistical Office`s departments within their statistical surveys (Department of Transport, Department of Agriculture and Department of Construction). Data of total final energy consumption of biomass is taken from Ministry of Mining and Energy. If the reporting units do not answer all the questions from the questionnaire оr if any illogicality difference in data is noticed, the reporting units are contacted by telephone or email in order to provide the missing information or clarifications.

Data is controlled at the level of the reporting unit, and then at the summary level. If an error is detected, the data is corrected at the level of the reporting unit, and then the sum is re-summarized in order to compile the energy balance of the energy source.

Also, in cooperation with IT experts, automation (software solutions) has been established for the calculation of certain data.

Questionnaires for collecting data are available on the SORS web-site.

http://www.stat.gov.rs/sr-latn/istrazivanja/methodology-and-documents/?a=04&s=0

The data are collected on annual basis, in the current year data are collected for the previous year.

Data are collected in a paper form, only survey in the field of industry is conducted through the web questionnaire. Questionnaires are sent to the reporting units at the end of February, in the current for the previous year. Also, the questionnaires are located on the website, except for oil and derivatives questionnaires, due to constant underconstruction with the reporting units. Reporting units can send completed questionnaires by post, e-mail or fax. Telephone contacts are made in order to increase the number of responses as well as clarification of data.

There are several levels of validation annual data, including checking consistency of time series, detection of cause of deviation, calculation of efficiency of energy transformation process, control of measure unit. If there are any doubts about the quality of the data, the SORS contacts the reporting units to provide the necessary clarifications or corrections.

Reporting units submit data in appropriate measure unit, depending on the energy source (t, TJ, Stm3, GWh) and data on calorific values, in accordance with the definitions given in Regulation (EU) No 1099/2008. All data given in a natural measure unit are converted to TJ. On that way, it is achievable to compile the Total Energy Balance of the Republic of Serbia, which consists of all the energy products.

Not applicable.