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Methodological explanation for the news release:


Balance of Natural gas


Sources of data collection

Sources of data collection for the annual report on natural gas are: Monthly surveys on energy, Ene.6, Ene.7, Ene.11, Ene.12, Ene.13; Annual surveys on energy, Ene.56, Ene.57, Ene.62, Ene.63.

Data scope

In the process of collecting data from the reporting units, the method of full coverage is used.

Definitions

For defining the categories in the balance scheme, the Annual questionnaire for Natural gas, 2009 of Eurostat, ECE/UN and IEA/OECD is used.

Import represents the quantity of natural gas that entered the national territory.

Transformation input includes natural gas consumed for conversion into another energy form (heat and electricity).

Autoproducer thermal power stations are plants for combined production of Electricity and Heat.

CHP plants are combined heat and power plants, which produce both heat and electricity intended for sale.

Main activity producer heat plants and Autoproducer heat plants are plants for production of Heat (for consumption of public and other sectors).

Distribution losses include all losses due to transmission and distribution of natural gas.

Available for final consumption is the natural gas available to final consumers.

Statistical difference is the difference between Available for final consumption and Final energy consumption.

Gross inland consumption of natural gas = Import + Stock change

Calculation method

For calculating the Balance of natural gas (total, by months), the methodology ‘’Energy Statistics Methodology Eurostat F4, 1998’’ is used.

Classifications

In the distribution of the final natural gas consumption the National Classification of Activities (Official Gazette No.09/2006) is used.




Last updated: 08.02.2011


   

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