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, comp osition and development of
energy product ion 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 geot hermal p ower. However, it
excludes the production of fuels of low calorific value, bio-energy, solar energy and t he secondary energy convert ed from the
p rimary energy.

Total Domestic Energy Consumption refers to the total consumption of energy of various kinds by material production
sect ors, non mat erial production s ectors 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 consump tion. The total energy consump tion includes
that of coal, crude oil and their products, natural gas and electricity, However, it excludes the consumpt ion of fuel of low
calorific value, bioenergy and solar energy. Total domestic energy consumption can be divided into t hree parts: final energy
consump tion, loss during the p rocess of energy conversion, and energy loss.

(1)Final Energy Consumption: It refers t o the total energy consumption by material production sectors , non material
production s ectors 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 los s in the process of energy conversion.

(2)Loss During the Process of Energy Conversion: It refers to the t otal inp ut of various kinds of energy for conversion,
minus t he total out put of various kinds of energy in the country in a given period of time. It is an indicator to show the los s
that occurs during the process of energy conversion.

(3)Energy Loss: It refers to the t otal of the loss of energy during t he course of energy t ransp ort, 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 t o gas
discharges and stockt aking is excluded.

Elasticity Ratio of Energy Production is an indicat or 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 purpos es or needs. The gross domestic product is used in calculat ion of the ratio
in this chapter.

Elasti city Ratio of Electri city Production is an indicator to show the relationship between the growth rate of electricity
production and t he 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 Growt h Rat e of Electricity Product ion Average Annual Growth Rate of
National Economy Elasticity Rati o 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 Consump tion = Average Annual
Growth Rat e 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:

Elas ticity Ratio of Elect ricit y 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 t he 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 Proces sing & Conversion = (Output of Energy Aft er Processing & Conversion / Input of Energy for
Processing & Conversion)× 100%