能源生产总量 指一定时期内全国（地区）一次能源生产量的总和。是观察全国（地区）能源生产水平、规模、构成和发展速度的总量指标，一次能源生产量包括原煤、原油、天然气、水电及其他动力能（如风能、地热能等）发电量。不包括：低热值燃料生产量、生物质能、太阳能等的利用和由一次能源加工转换而成的二次能源产量。
    能源消费总量 指一定时期内全国（地区）物质生产部门、非物质生产部门和生活消费的各种能源的总和。是观察能源消费水平、构成和增长速度的总量指标，能源消费总量包括:原煤和原油及其制品、天然气、电力。不包括:低热值燃料、生物质能和太阳能等的利用。能源消费总量分为三部分，即终端能源消费量、能源加工转换损失量和损失量。
    （1）终端能源消费量 指一定时期内全国（地区）物质生产部门、非物质生产部门和生活消费的各种能源在扣除了用于加工转换二次能源消费量和损失量以后的数量。
    （2）能源加工转换损失量 指一定时期内全国（地区）投入加工转换的各种能源数量之和与产出各种能源产品之和的差额。它是观察能源在加工转换过程中损失量变化的指标。
    （3）能源损失量 指一定时期内能源在输送、分配、储存过程中发生的损失和由客观原因造成的各种损失量。不包括各种气体能源放空、放散量。
    能源消费弹性系数 是反映能源消费增长速度与国民经济增长速度之间比例关系的指标。计算公式为：
    能源消费弹性系数=能源消费量平均增长速度/国民经济年平均增长速度

    Total Energy Production refers to the total production of primary energy by all energy producing enterprises in the country (region) 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 (region). The production of primary energy includes that of coal, crude oil, natural gas, hydropower and electricity generated by other means such as wind power and geothermal power. However, it excludes the production of fuels of low calorific value, bioenergy, 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 material production sectors, non-material production sectors and households in the country (region) 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, bioenergy and solar energy. Total domestic energy consumption can be divided into three parts:
    (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) 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 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.