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 capacity, scale, composition and 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 excludes
the production of fuels of low calorific value, bio-energy, solar energy and the secondary energy converted from the primary
energy.

Total Domestic Energy Consumption  refers to the total consumption of energy of various kinds by material production
sectors, non material production sectors and households in the country 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.

(1)Final Energy Consumption: It refers to the total energy consumption by material production sectors, non material
production sectors and households in the country (region) 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.

(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 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 shown by the gross national product, gross domestic product
and other indicators, depending upon the purposes or needs. The gross domestic product is used in calculation of the ratio in
this chapter.

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 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

Efficiency of Energy Processing and Conversion  refers to the ratio of the total output of energy products of various
kinds after processing and conversion and 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:

Efficiency of Energy Processing & Conversion = (Output of Energy After Processing & Conversion / Input of Energy for
Processing & Conversion)×100%