Statistical Difference
Asia-Pacific Economic Cooperation (APEC)

European Commission - Eurostat
When looking at an energy balance, statistical difference is defined as the difference between energy supplied and consumed. It is the energy available for final consumption less final non-energy and final energy consumption. The energy available for final consumption is defined as gross inland consumption - transformation input + transformation output + transfers - consumption in energy sector - distribution losses.

When focussing on a specific fuel, statistical difference represents the difference in the reconciliations of reported supply and reported consumption, or in some cases the difference between reported and calculated figures (inland deliveries, refinery intake).

Statistical differences arise because the data for the individual components of supply are often derived from different data sources by the national administration. Furthermore, the inclusion of changes in some large consumers' stocks in the supply part of the balance introduces distortions which also contribute to the statistical differences.

In the energy balances, statistical differences can also arise from different net calorific values being attributed to different flows in the commodity balance.

International Energy Agency (IEA)
When looking at an energy balance, statistical difference is defined as deliveries to final consumption + use for transformation and consumption within the energy sector + distribution losses - domestic supply - transfers.

When focussing on a specific fuel, statistical difference represents the difference in the reconciliations of reported supply and reported consumption, or in some cases the difference between reported and calculated figures (inland deliveries, refinery intake).

Statistical differences arise because the data for the individual components of supply are often derived from different data sources by the national administration. Furthermore, the inclusion of changes in some large consumers' stocks in the supply part of the balance introduces distortions which also contribute to the statistical differences.

In the energy balances, statistical differences can also arise from different net calorific values being attributed to different flows in the commodity balance.

Latin American Energy Organization (OLADE)
Statistical adjustment serves primarily, in some cases, to make up for differences due to conversion of different sources, from their original measurement units to units that are compatible for preparing the balance; and in other cases to make up for differences that are imperceptible and very difficult to find. In all cases, adjustment should not be greater than 5% of the total supply.

Adjustment = Domestic Supply Total Transformation Losses Total Final Consumption

United Nations Economic Commission for Europe (UNECE)
When looking at an energy balance, statistical difference is defined as deliveries to final consumption + use for transformation and consumption within the energy sector + distribution losses - domestic supply - transfers.

When focussing on a specific fuel, statistical difference represents the difference in the reconciliations of reported supply and reported consumption, or in some cases the difference between reported and calculated figures (inland deliveries, refinery intake).

Statistical differences arise because the data for the individual components of supply are often derived from different data sources by the national administration. Furthermore, the inclusion of changes in some large consumers' stocks in the supply part of the balance introduces distortions which also contribute to the statistical differences.

In the energy balances, statistical differences can also arise from different net calorific values being attributed to different flows in the commodity balance.

UNSD Energy Statistics Section
Statistical difference in the energy balance is calculated as follows: total energy requirements +/- energy converted +/- net transfers - consumption by the energy sector - losses in transport and didstribution - consumption for non-energy uses - final consumption.