主要统计指标解释

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、过程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、核电及其他动力能(如风能、地热能等)发电量。不包括低热值燃料生产量、太阳热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  指一定地域内（国家或地区）国民经济各行业和居民家庭在一定时期消费的各种能源的总和。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）各行业和居民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。

能源生产弹性系数  是能源生产量的增长与国民经济增长之间的比值。计算公式：

本资料采用国内生产总值指标计算国民经济年平均增长速度。

电力生产弹性系数  是电力生产量的增长与国民经济增长之间的比值。计算公式：

能源消费弹性系数  是能源消费增长速度与国民经济增长速度之间的比值。计算公式：

电力消费弹性系数  是电力消费增长速度与国民经济增长速度之间的比值。计算公式：

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 (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, hydro power and electricity generated by other means such as wind power and geothermal power. However, it excludes the production of fuels of low calorific value, solar energy and the secondary energy converted from primary energy.

Total Energy Consumption    refers to the total consumption of energy of various kinds of national economy industries and residents in a certain area (country or region) in a given period of time. Total energy consumption can be divided into three parts:

(1)Final Energy Consumption: refers to the total consumption of energy by industry and residential 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 transformation.

(2)Loss During Energy transformation: refers to the total input of various kinds of energy for transformation, 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 transformation.

(3)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 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 Gross Domestic Product (GDP) is used to calculate the growth rate of national economy in this book.

Elasticity 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. The formula is:

Elasticity 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 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: