Explanatory Notes on Main Statistical Indicators
Total
Energy Production
refers to the total production of primary energy by all energy producing
enterprises in the city in a given period of time. It is a comprehensive
indicator to show the capacity, scale, composition and development of energy
production of the country. The production of primary energy includes that of
coal, crude oil, natural gas, hydropower and electricity generated by nuclear
energy and other means such as wind power and geothermal power. However, it
excludes the production of fuels of low calorific value, bio-energy, solar
energy and the secondary energy converted from the primary energy.
Total
Energy Consumption
refers to the total consumption of energy of various kinds by various
industries and households in the city in a given period of time. It is a comprehensive
indicator to show the scale, composition and development of energy consumption.
The total energy consumption includes that of coal, crude oil and their
products, natural gas and electricity; however, it excludes the consumption of
fuel of low calorific value, bio-energy and solar energy. Total domestic energy
consumption can be divided into three parts: final energy consumption, loss
during the process of energy conversion, and energy loss.
Final
Consumption of Energy
refers to the total energy consumption by various industries and
households in the city in a given period of time, but excludes the consumption
in conversion of the primary energy into the secondary energy and the loss in
the process of energy conversion.
Loss
during the Process of Energy Conversion
refers to the total input of various kinds of energy for conversion, minus
the total output of various kinds of energy in the city in a given period of
time. It is an indicator to show the loss that occurs during the process of
energy conversion.
Energy
Loss
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 excluded.
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:
Elasticity Ratio of Energy Production =
Average Annual Growth Rate of Energy Production/ Average Annual
Growth Rate of National Economy
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 the electricity production should be higher than
that of the national economy. Its formula is:
Elasticity Ratio of Electricity Production =
Average Annual Growth Rate of Electricity Production/ Average Annual
Growth Rate of National Economy
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 Energy Consumption =
Average Annual Growth Rate of Energy Consumption/ Average Annual
Growth Rate of National Economy
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:
Elasticity Ratio of Electricity Consumption =
Average Annual Growth Rate of Electricity/ Average Annual Growth
Rate of National Economy