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, solar thermal and secondary energy converted from
primary energy.
Total Energy Consumption refers to the total
consumption of energy of various kinds by the production sectors of the economy
and the households in a given period of time. It includes the primary kinds of
energy such as coal, crude oil, natural gas, hydro-power, nuclear power, wind
power, solar power, geothermal power and bio-energy; the secondary kinds of
energy and their products which are transformed from the primary energy such as
washed coal, coke, coal gas, electricity, heating, and petroleum products; and
other kinds of fossil energy, renewable energy and new energy. The renewable
energy, including hydro-power, wind power, solar power, geothermal power and
bio-energy, refers to the part attained with some given technical means and
used for commercial purposes. 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:
