Supply
European Commission - Eurostat

International Energy Agency (IEA)
Domestic supply is defined as production + from other sources + imports - exports - international marine bunkers stock changes.

In the case of electricity the definition is slightly different: Gross production - own use by plant + imports - exports - used for pumps storage - used for heat pumps - used for electric powered steam boiler.

The definition is also different for heat: Gross production - own use by plant + imports - exports - used for pumps storage - used for electricity production.

Latin American Energy Organization (OLADE)
The net total availability of energy to meet the energy needs of a country's economy.

Total supply equals energy production + energy import - energy export +/- inventory variation.

United Nations Economic Commission for Europe (UNECE)
Domestic supply is defined as production + from other sources + imports - exports - international marine bunkers stock changes.

In the case of electricity the definition is slightly different: Gross production - own use by plant + imports - exports - used for pumps storage - used for heat pumps - used for electric powered steam boiler.

The definition is also different for heat: Gross production - own use by plant + imports - exports - used for pumps storage - used for electricity production.