Explanatory
Notes on Main Statistical Indicators
Total Energy Production refers to the total production of primary
energy by all energy producing enterprises in the country in a given period of
time. It is a comprehensive indicator to show the level, scale, composition and
pace of development of energy production of the country. The production of
primary energy includes that of coal, crude oil, natural gas, hydro-power and
electricity generated by nuclear energy and other means such as wind power and
geothermal power. However, it does not include the production of fuels of low
calorific value, bio-energy, solar energy and secondary energy converted from
primary energy.
Total Energy Consumption refers to
the total consumption of energy of various kinds by the production sectors and
the households in the country in a given period of time. It is a comprehensive
indicator to show the scale, composition and pace of increase of energy
consumption. Total energy consumption includes that of coal, crude oil and
their products, natural gas and electricity. However, it does not include the
consumption of fuel of low calorific value, bio-energy and solar energy. Total
energy consumption can be divided into three parts: end-use energy consumption;
loss during the process of energy conversion; and energy loss.
(1)End-use Energy Consumption: It
refers to the total energy consumption by the production sectors and the
households in the country (region) in a given period of time. It does not include
the consumption during the conversion of primary energy into secondary energy
and the loss in the process of energy conversion.
(2)Loss During the
Process of Energy Conversion: It refers to the total input of various kinds of
energy for conversion, minus the total output of various kinds of energy in the
country in a given period of time. It is an indicator to show the loss that
occurs during the process of energy conversion.
(3)Energy Loss: It refers to the total of
the loss of energy during the course of energy transport, distribution and
storage and the loss caused by any objective reason in a given period of time.
The loss of various kinds of gas due to gas discharges and stocktaking is not
included.
Elasticity Ratio of Energy Production is an indicator to
show the relationship between the growth rate of energy production and the
growth rate of the national economy. The formula is:
The average annual growth rate of the
national economy can be measured by indicators such as the Gross National
Product and the Gross Domestic Product, depending on the purposes or needs. The
Gross Domestic Product has been used in the calculation of the ratio in this
Yearbook.
Elasticity Ratio of Electricity Production is an indicator to show the
relationship between the growth rate of electricity production and the growth
rate of the national economy. Generally speaking, the growth rate of
electricity production should be higher than that of the national economy.
Its formula is:
Elasticity Ratio of Energy Consumption is an indicator
to show the relationship between the growth rate of energy consumption and the
growth rate of the national economy. The formula is:
Elasticity Ratio of Electricity Consumption is an
indicator to show the relationship between the growth rate of electricity
consumption and the growth rate of the national economy. The formula is:
Efficiency of Energy Processing and Conversion refers to the
ratio of the total output of energy products of various kinds after processing
and conversion to the total input of energy of various kinds for processing and
conversion in the same reference period. It is an important indicator to show
the current conditions of energy processing and conversion equipment, production
technique and management. The formula is:
Energy Consumption per Unit of GDP refers to the
energy consumption per unit of Gross Domestic Product in a country or the Gross
Regional Product in a region in the same reference period. The formula is:
Electricity Consumption per Unit of GDP refers to
the electricity consumption per
unit of Gross Domestic Product in a
country or the Gross Regional Product in a region in the same reference period.
The formula is:
Energy Consumption per Unit of Industrial
Value-added refers to the energy
consumption per unit of industrial
value-added in a country or region in the same reference period. The formula
is:
