BRIEF
INTRODUCTION

I. The data in
this chapter cover mainly the energy production and consumption and their
composition, the elasticity ratio of energy production and consumption, the
overall balance of energy and the balance by the variety of energy, the
consumption of energy by sector and by main variety, efficiency of energy
conversion and the consumption of energy for residential use.

II. The national
energy balance in this chapter is compiled by the Department of Industry and
Transport Statistics, NBS on the basis of data from surveys and from
input-output tables.

III. Coverage and
calculation of data:

(1) The data on
the production of primary energy are the same as the concerned data of the
industrial statistics.

(2) The
elasticity ratio of energy production is calculated as the quotient of the
growth rate of energy production divided by the growth rate of GDP; and the
elasticity ratio of energy consumption is calculated as the quotient of the
growth rate of energy consumption divided by the growth rate of GDP.

(3) In the energy
balance, the data on the imports and exports are data from the customs
statistics. The refueling by Chinese ships and airplanes abroad is included in
the imports. The refueling by foreign ships and airplanes in China is included
in the exports. The coefficient for conversion of electric power into the
standard coal equivalent is calculated according to the average consumption of
coal for generating electricity.

(4) In the table
on the efficiency of energy conversion, the coefficient for conversion of
electric power into the standard coal equivalent is calculated on the basis of
heat value equivalent. One kwh is equal to 0.1229 kg SCE.