Explanatory Notes on Main
Statistical Indicators
Proved
Amount in Place is the tonnage of crude coal, crude petroleum, nature gas that has
been both carefully measured and assessed.
Proved
Recoverable Reserves are the tonnage of the proved amount in place that can be recovered
under present and expected local economic conditions with existing available
technology.
Commercial
Energy Use refers to apparent consumption, which is equal to indigenous production
plus imports and stock changes, minus exports and fuels supplied to ships and
aircraft engaged in international transport.
Primary
Energy Production Including in the production of
commercial primary energy for solids are hard coal, lignite, peat and oil
shale; liquids are comprised of crude petroleum and natural gas liquids; gas
comprises natural gas and natural gas liquids; electricity is comprised of
primary electricity generation from hydro, nuclear, geothermal, wind, tide wave
and solar sources.
Bunkers Airs
bunkers refer to bunkers of aviation gasoline and jet fuel. Sea bunkers refer
to bunkers of hard coal, gas-diesel oil and residual fuel oil.
Energy
Consumption
Including in the consumption of commercial energy for solids are
consumption of primary forms of solid fuels, net imports and changes in stocks
of secondary fuels; liquids are comprised of consumption of energy petroleum
products including feed stocks, natural gasolene,
condensate, refinery gas and input of crude petroleum to thermal power plants;
gases including the consumption of natural gas, net imports and changes in
stocks of gasworks and coke-oven gas; and Electricity is comprised of
production of primary electricity and net imports of electricity.
Consumption=Production
Imports-Exports-Bunkers-Changes in stocks
Balance An unallocated has been created in order to balance out the difference between the results of the above formula for consumption and the total consumption. This inequality occurs primarily because of the exclusion of non-energy petroleum products as well as inadequate or unavailable stock data.